com.smartgwt.client.widgets.grid

## Class ColumnTree

- java.lang.Object
- - com.google.gwt.user.client.ui.UIObject
  - - com.google.gwt.user.client.ui.Widget
    - - com.smartgwt.client.widgets.BaseWidget
      - - com.smartgwt.client.widgets.Canvas
        - - com.smartgwt.client.widgets.layout.Layout
          - - com.smartgwt.client.widgets.grid.ColumnTree

- All Implemented Interfaces:
    com.google.gwt.event.logical.shared.HasAttachHandlers, com.google.gwt.event.shared.HasHandlers, com.google.gwt.user.client.EventListener, com.google.gwt.user.client.ui.HasVisibility, com.google.gwt.user.client.ui.IsWidget, LogicalStructure, DataBoundComponent, HasClearHandlers, HasClickHandlers, HasDoubleClickHandlers, HasDragCompleteHandlers, HasDragMoveHandlers, HasDragRepositionMoveHandlers, HasDragRepositionStartHandlers, HasDragRepositionStopHandlers, HasDragResizeMoveHandlers, HasDragResizeStartHandlers, HasDragResizeStopHandlers, HasDragStartHandlers, HasDragStopHandlers, HasDropCompleteHandlers, HasDropHandlers, HasDropMoveHandlers, HasDropOutHandlers, HasDropOverHandlers, HasFetchDataHandlers, HasFocusChangedHandlers, HasHoverHandlers, HasHoverHiddenHandlers, HasKeyDownHandlers, HasKeyPressHandlers, HasMouseDownHandlers, HasMouseMoveHandlers, HasMouseOutHandlers, HasMouseOverHandlers, HasMouseStillDownHandlers, HasMouseUpHandlers, HasMouseWheelHandlers, HasMovedHandlers, HasParentMovedHandlers, HasResizedHandlers, HasRightMouseDownHandlers, HasRuleContextChangedHandlers, HasScrolledHandlers, HasShowContextMenuHandlers, HasVisibilityChangedHandlers, HasNodeSelectedHandlers, HasMembersChangedHandlers

      public class ColumnTree
      extends Layout
      implements HasNodeSelectedHandlers, DataBoundComponent

  The Smart GWT system supports hierarchical data (also referred to as tree data due to its "branching" organization) with:
  - the `Tree` class, which manipulates hierarchical data sets
  - the TreeGrid widget class, which extends the ListGrid class to visually present tree data in an expandable/collapsible format.
  - the ColumnTree widget class, which visually presents tree data in a so-called "Miller Column" format.
  For information on DataBinding Trees, see `TreeDataBinding`.

  A ColumnTree shows a single branch of the underlying `Tree` horizontally, from left to right. Thus, the leftmost column shows all the top-level nodes. When the user clicks one of those nodes, a new column is shown immediately to the right of the top-level column, showing the selected node's children. Additional columns are shown as required to present lower-level children. The behavior of ColumnTree is similar to that of the Browser interface in the Apple™ iTunes™ application.

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

      `com.google.gwt.user.client.ui.UIObject.DebugIdImpl, com.google.gwt.user.client.ui.UIObject.DebugIdImplEnabled`

  - ### Field Summary

    - ### Fields inherited from class com.smartgwt.client.widgets.BaseWidget

      `config, configOnly, factoryCreated, factoryProperties, id, nativeObject, scClassName`

    - ### Fields inherited from class com.google.gwt.user.client.ui.UIObject

      `DEBUG_ID_PREFIX`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `ColumnTree()`
    `ColumnTree(com.google.gwt.core.client.JavaScriptObject jsObj)`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `com.google.gwt.event.shared.HandlerRegistration` | `addDragCompleteHandler(DragCompleteHandler handler)` Add a `com.smartgwt.client.widgets.DragCompleteHandler`.
    `com.google.gwt.event.shared.HandlerRegistration` | `addDropCompleteHandler(DropCompleteHandler handler)` Add a `com.smartgwt.client.widgets.DropCompleteHandler`.
    `com.google.gwt.event.shared.HandlerRegistration` | `addFetchDataHandler(FetchDataHandler handler)` Add a fetchData handler.
    `void` | `addFormulaField()` Convenience method to display a `com.smartgwt.client..FormulaBuilder` to create a new Formula Field.
    `com.google.gwt.event.shared.HandlerRegistration` | `addNodeSelectedHandler(NodeSelectedHandler handler)` Add a onNodeSelected handler.
    `void` | `addSummaryField()` Convenience method to display a `com.smartgwt.client..SummaryBuilder` to create a new Summary Field.
    `java.lang.Boolean` | `anySelected()` Whether at least one item is selected
    `java.lang.Boolean` | `anySelected(int colNum)` Whether at least one item is selected in the supplied column (the first column if none is passed)
    `static void` | `changeAutoChildDefaults(java.lang.String autoChildName, Canvas defaults)` Changes the defaults for Canvas AutoChildren named `autoChildName`.
    `static void` | `changeAutoChildDefaults(java.lang.String autoChildName, FormItem defaults)` Changes the defaults for FormItem AutoChildren named `autoChildName`.
    `protected com.google.gwt.core.client.JavaScriptObject` | `create()`
    `void` | `deselectAllRecords()` Deselect all records
    `void` | `deselectAllRecords(int colNum)` Deselect all records in the supplied column (the first column if none is passed)
    `void` | `deselectRecord(int record)` Deselect a `Record` passed in explicitly, or by index.
    `void` | `deselectRecord(int record, int colNum)` Deselect a `Record` passed in explicitly, or by index.
    `void` | `deselectRecord(Record record)` Deselect a `Record` passed in explicitly, or by index.
    `void` | `deselectRecord(Record[] records)` Deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `deselectRecord(Record record, int colNum)`
    `void` | `deselectRecords(int[] records)` Deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `deselectRecords(int[] records, int colNum)` Deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `deselectRecords(Record[] records)` Deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `deselectRecords(Record[] records, int colNum)` Deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `disableHilite(java.lang.String hiliteID)` Disable a hilite
    `void` | `disableHiliting()` Disable all hilites.
    `void` | `editFields()` Shows a FieldPicker interface allowing end-users to rearrange the order and visibiility of the fields in the associated DataBoundComponent.
    `void` | `editHilites()` Shows a HiliteEditor interface allowing end-users to edit the data-hilites currently in use by this DataBoundComponent.
    `void` | `enableHilite(java.lang.String hiliteID)` Enable / disable a `hilites`
    `void` | `enableHilite(java.lang.String hiliteID, boolean enable)` Enable / disable a `hilites`
    `void` | `enableHiliting()` Enable all hilites.
    `void` | `enableHiliting(boolean enable)` Enable all hilites.
    `void` | `exportData()` See `DataBoundComponent.exportData(com.smartgwt.client.data.DSRequest,com.smartgwt.client.rpc.RPCCallback)`
    `void` | `exportData(DSRequest requestProperties)` See `DataBoundComponent.exportData(com.smartgwt.client.data.DSRequest,com.smartgwt.client.rpc.RPCCallback)`
    `void` | `exportData(DSRequest requestProperties, RPCCallback callback)` Uses a "fetch" operation on the current `DataSource` to retrieve data that matches the current filter and sort criteria for this component, then exports the resulting data to a file or window in the requested format.
    `void` | `fetchData()` Retrieves data from the DataSource that matches the specified criteria.
    `void` | `fetchData(Criteria criteria)` Retrieves data from the DataSource that matches the specified criteria.
    `void` | `fetchData(Criteria criteria, DSCallback callback)` Retrieves data from the DataSource that matches the specified criteria.
    `void` | `fetchData(Criteria criteria, DSCallback callback, DSRequest requestProperties)` Retrieves data from the DataSource that matches the specified criteria.
    `void` | `filterData()` Retrieves data that matches the provided criteria and displays the matching data in this component.
    `void` | `filterData(Criteria criteria)` Retrieves data that matches the provided criteria and displays the matching data in this component.
    `void` | `filterData(Criteria criteria, DSCallback callback)` Retrieves data that matches the provided criteria and displays the matching data in this component.
    `void` | `filterData(Criteria criteria, DSCallback callback, DSRequest requestProperties)` Retrieves data that matches the provided criteria and displays the matching data in this component.
    `Record` | `find(AdvancedCriteria adCriteria)` Filters all objects according to the AdvancedCriteria passed and returns the first matching object or null if not found
    `Record[]` | `findAll(AdvancedCriteria adCriteria)` Filters all objects according to the AdvancedCriteria passed
    `int` | `findIndex(AdvancedCriteria adCriteria)` Finds the index of the first Record that matches with the AdvacendCriteria passed.
    `int` | `findNextIndex(int startIndex, AdvancedCriteria adCriteria)` Like `RecordList.findIndex(java.util.Map)`, but considering the startIndex parameter.
    `int` | `findNextIndex(int startIndex, AdvancedCriteria adCriteria, int endIndex)` Like `RecordList.findIndex(java.util.Map)`, but considering the startIndex and endIndex parameters.
    `void` | `folderDrop(TreeNode[] nodes, TreeNode folder, int index, Canvas sourceWidget)` Process a drop of one or more nodes on a TreeGrid folder.
    `java.lang.Boolean` | `getAddDropValues()` Indicates whether to add "drop values" to items dropped on this component, if both the source and target widgets are databound, either to the same DataSource or to different DataSources that are related via a foreign key.
    `java.lang.String` | `getAddFormulaFieldText()` Text for a menu item allowing users to add a formula field
    `java.lang.String` | `getAddOperation()` `operationId` this component should use when performing add operations.
    `java.lang.String` | `getAddSummaryFieldText()` Text for a menu item allowing users to add a formula field
    `java.lang.Boolean` | `getAutoFetchAsFilter()` If `DataBoundComponent.setAutoFetchData(Boolean)` is true, this attribute determines whether the initial fetch operation should be performed via `DataBoundComponent.fetchData()` or `DataBoundComponent.filterData()`
    `java.lang.Boolean` | `getAutoFetchData()` If true, when this component is first drawn, automatically call `DataBoundComponent.fetchData()` or `DataBoundComponent.filterData()` depending on `DataBoundComponent.getAutoFetchAsFilter()` .
    `TextMatchStyle` | `getAutoFetchTextMatchStyle()` If `autoFetchData` is `true`, this attribute allows the developer to specify a textMatchStyle for the initial `DataBoundComponent.fetchData()` call.
    `IButton` | `getBackButton()` When using `single-column mode`, this is the "Back" button that you see hovering above the column UI and that allows backward navigation.
    `java.lang.String` | `getBackButtonTitle()` When using `single-column mode`, this i18n property dictates the title for the `button` docked to the top left which allows navigation back through the column tree.
    `java.lang.Boolean` | `getCanAddFormulaFields()` Adds an item to the header context menu allowing users to launch a dialog to define a new field based on values present in other fields, using the `com.smartgwt.client..FormulaBuilder`.
    `java.lang.Boolean` | `getCanAddSummaryFields()` Adds an item to the header context menu allowing users to launch a dialog to define a new text field that can contain both user-defined text and the formatted values present in other fields, using the `com.smartgwt.client..SummaryBuilder`.
    `java.lang.Boolean` | `getCanDragRecordsOut()` Indicates whether records can be dragged from this listGrid and dropped elsewhere.
    `java.lang.String` | `getClosedIconSuffix()` This suffix will be appended to the `folderIcon` for closed folders.
    `ListGrid` | `getColumn()` Note : This API is non-functional (always returns null) and exists only to make you aware that this MultiAutoChild exists.
    `ListGrid` | `getColumnProperties()` Standard set of properties to apply to each generated `column` in this columnTree.
    `void` | `getColumnTitle(TreeNode node, int colNum)` Returns the title to show for the header of indicated column.
    `java.lang.String[]` | `getColumnTitles()` With `fixedColumns` enabled, defines the header title for each column.
    `java.lang.String[]` | `getColumnWidths()` With `fixedColumns` enabled, defines the pixel or % width per column.
    `ListGrid` | `getCustomColumnProperties(TreeNode node, int colNum)` Additional properties to apply to the ListGrid that will show the indicated column.
    `java.lang.String` | `getCustomIconOpenProperty()` This property allows the developer to rename the `default node.showOpenIcon` property.
    `java.lang.String` | `getCustomIconProperty()` This property allows the developer to customize the icon displayed next to a node.
    `Tree` | `getData()` A `Tree` object consisting of nested `TreeNode`s to display in this ColumnTree.
    `com.google.gwt.core.client.JavaScriptObject` | `getDataAsJSList()`
    `FetchMode` | `getDataFetchMode()` How to fetch and manage records retrieve from the server.
    `int` | `getDataPageSize()` When using `data paging`, how many records to fetch at a time.
    `Tree` | `getDataProperties()` For a `ColumnTree` that uses a DataSource, these properties will be passed to the automatically-created ResultTree.
    `DataSource` | `getDataSource()` The DataSource that this component should bind to for default fields and for performing `DataSource requests`.
    `java.lang.Boolean` | `getDeepCloneOnEdit()` Before we start editing values in this DataBoundComponent, should we perform a deep clone of the underlying values.
    `Record[]` | `getDragData()` During a drag-and-drop interaction, this method returns the set of records being dragged out of the component.
    `DragDataAction` | `getDragDataAction()` Indicates what to do with data dragged into another DataBoundComponent.
    `java.lang.String` | `getDragTrackerStyle()` CSS Style to apply to the drag tracker when dragging occurs on this component.
    `java.lang.String` | `getDropIconSuffix()` If `showDropIcons` is true, this suffix will be appended to the `folderIcon` when the user drop-hovers over some folder.
    `java.util.Map` | `getDropValues()` When an item is dropped on this component, and `addDropValues` is true and both the source and target widgets are databound, either to the same DataSource or to different DataSources that are related via a foreign key, this object provides the "drop values" that Smart GWT will apply to the dropped object before updating it.
    `java.lang.String` | `getDuplicateDragMessage()` Message to show when a user attempts to transfer duplicate records into this component, and `preventDuplicates` is enabled.
    `java.lang.String` | `getEditFormulaFieldText()` Text for a menu item allowing users to edit a formula field
    `java.lang.String` | `getEditSummaryFieldText()` Text for a menu item allowing users to edit the formatter for a field
    `java.lang.String[]` | `getEmptyColumnMessages()` With `fixedColumns` enabled, defines each column's `ListGrid.emptyMessage`.
    `java.lang.Boolean` | `getExportAll()` Setting exportAll to true prevents the component from passing its list of fields to the export call.
    `java.lang.String[]` | `getExportFields()` The list of field-names to export.
    `java.lang.Boolean` | `getExportIncludeSummaries()` If Summary rows exist for this component, whether to include them when exporting client data.
    `java.lang.String` | `getFetchOperation()` Operation ID this component should use when performing fetch operations.
    `Alignment[]` | `getFieldAlignments()` Returna an array of field alignments for this grid
    `int` | `getFieldCount()` Return the number of fields.
    `com.google.gwt.core.client.JavaScriptObject[]` | `getFieldsAsJavaScriptObjects()` Return the fields as JavaScriptObjects rather than as SmartGWT Java wrappers of the field class type (e.g.
    `java.lang.String` | `getFirstColumnTitle()` A title for the leftmost column if `showHeaders` is set (the remaining columns have their titles derived from the item selected in the column to the left).
    `java.lang.Integer` | `getFixedColumns()` Enables fixed columns mode.
    `java.lang.String` | `getFolderIcon()` The URL of the base icon for all folder nodes in this columnTree.
    `java.lang.String` | `getHiliteProperty()` Marker that can be set on a record to flag that record as hilited.
    `Hilite[]` | `getHilites()` Return the set of hilite-objects currently applied to this DataBoundComponent.
    `java.lang.String` | `getHiliteState()` Get the current hilites encoded as a String, for saving.
    `Criteria` | `getImplicitCriteria()` Criteria that are never shown to or edited by the user and are cumulative with any criteria provided via `DataBoundComponent.initialCriteria`, `DataBoundComponent.setCriteria()` etc.
    `Criteria` | `getInitialCriteria()` Criteria to use when `DataBoundComponent.setAutoFetchData(Boolean)` is used.
    `java.lang.Boolean` | `getLoadDataOnDemand()` For databound columnTree instances, should the entire tree of data be loaded on initial fetch, or should each column be loaded as needed.
    `com.smartgwt.logicalstructure.core.LogicalStructureObject` | `getLogicalStructure()` Getter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.
    `java.lang.String` | `getNodeIcon()` The filename of the default icon for all leaf nodes in this grid.
    `java.lang.String` | `getOpenIconSuffix()` If `showOpenIcons` is true, this suffix will be appended to the `folderIcon` for open folders in this grid.
    `static ColumnTree` | `getOrCreateRef(com.google.gwt.core.client.JavaScriptObject jsObj)`
    `java.lang.Boolean` | `getPreventDuplicates()` If set, detect and prevent duplicate records from being transferred to this component, either via drag and drop or via `DataBoundComponent.transferSelectedData(com.smartgwt.client.widgets.DataBoundComponent)`.
    `java.lang.Boolean` | `getProgressiveLoading()` Indicates whether or not this component will load its data `progressively`
    `TreeNode` | `getRecord(int index)` Retrieve a record by index.
    `TreeNode` | `getRecord(int index, java.lang.Integer colNum)` Retrieve a record by index.
    `int` | `getRecordIndex(Record record)` Get the index of the provided record.
    `RecordList` | `getRecordList()` Return the underlying data of this DataBoundComponent as a `RecordList`.
    `java.lang.String` | `getRemoveOperation()` `operationId` this component should use when performing remove operations.
    `ResultSet` | `getResultSet()` Return the underlying data of this DataBoundComponent as a `ResultSet`.
    `Record` | `getSelectedRecord()` Get the selected record, that is, the parent of the nodes in the rightmost visible column.
    `ListGridRecord[]` | `getSelection(int colNum)` Returns the array of objects selected in the specified column of the columnTree
    `java.lang.Boolean` | `getShowComplexFields()` Whether to show fields of non-atomic types when a DataBoundComponent is given a DataSource but no `component.fields`.
    `java.lang.Boolean` | `getShowCustomIconOpen()` Should folder nodes showing custom icons (set via the `customIconProperty`), show open state images when the folder is opened.
    `java.lang.Boolean` | `getShowDetailFields()` Whether to show fields marked `detail:true` when a DataBoundComponent is given a DataSource but no `component.fields`.
    `java.lang.Boolean` | `getShowDropIcons()` If true, when the user drags a droppable target over a folder in this TreeGrid, show a different icon folder icon.
    `java.lang.Boolean` | `getShowHeaders()` If set, each column in the ColumnTree will show a header with the title of the selected node from the column to the left.
    `java.lang.Boolean` | `getShowHiddenFields()` Whether to show fields marked `hidden:true` when a DataBoundComponent is given a DataSource but no `component.fields`.
    `java.lang.Boolean` | `getShowMultipleColumns()` When set to false, only displays a single column at a time, showing a slide animation when moving between columns.
    `java.lang.Boolean` | `getShowNodeCount()` If set, and `showHeaders` is also set, each column's header will show a count of the number of nodes in that column
    `java.lang.Boolean` | `getShowOpenIcons()` If true, show a different icon for `open` folders than closed folders.
    `SortSpecifier[]` | `getSort()` Returns the current `SortSpecifiers` for this component.
    `java.lang.String` | `getTitleField()` Method to return the fieldName which represents the "title" for records in this Component. If this.titleField is explicitly specified it will always be used. Otherwise, default implementation will check `titleField` for databound components. For non databound components returns the first defined field name of `"title"`, `"name"`, or `"id"`.
    `java.lang.String` | `getTitleFieldValue(Record record)` Get the value of the titleField for the passed record
    `java.lang.String` | `getUpdateOperation()` `operationId` this component should use when performing update operations.
    `java.lang.Boolean` | `getUseAllDataSourceFields()` If true, the set of fields given by the "default binding" (see `fields`) is used, with any fields specified in `component.fields` acting as overrides that can suppress or modify the display of individual fields, without having to list the entire set of fields that should be shown.
    `java.lang.Boolean` | `getUseFlatFields()` The `useFlatFields` flag causes all simple type fields anywhere in a nested set of DataSources to be exposed as a flat list for form binding.
    `void` | `invalidateCache()` Invalidate the current data cache for this databound component via a call to the dataset's `invalidateCache()` method, for example, `ResultSet.invalidateCache()`.
    `void` | `navigateBack()` Navigate to the previous column.
    `protected void` | `onInit_ColumnTree()`
    `protected void` | `onInit()`
    `void` | `selectAllRecords()` Select all records
    `void` | `selectAllRecords(int colNum)` Select all records in the supplied column (the first column if none is passed)
    `void` | `selectRecord(int record)` Select/deselect a `Record` passed in explicitly, or by index.
    `void` | `selectRecord(int record, boolean newState)` Select/deselect a `Record` passed in explicitly, or by index.
    `void` | `selectRecord(int record, boolean newState, int colNum)` Select/deselect a `Record` passed in explicitly, or by index.
    `void` | `selectRecord(Record record)` Select/deselect a `Record` passed in explicitly, or by index.
    `void` | `selectRecord(Record record, boolean newState)` Select/deselect a `Record` passed in explicitly, or by index.
    `void` | `selectRecord(Record record, boolean newState, int colNum)` Select/deselect a `Record` passed in explicitly, or by index.
    `void` | `selectRecords(int[] records)` Select/deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `selectRecords(int[] records, boolean newState)` Select/deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `selectRecords(int[] records, boolean newState, int colNum)` Select/deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `selectRecords(Record[] records)` Select/deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `selectRecords(Record[] records, boolean newState)` Select/deselect a list of `Record`s passed in explicitly, or by index.
    `void` | `selectRecords(Record[] records, boolean newState, int colNum)` Select/deselect a list of `Record`s passed in explicitly, or by index.
    `ColumnTree` | `setAddDropValues(java.lang.Boolean addDropValues)` Indicates whether to add "drop values" to items dropped on this component, if both the source and target widgets are databound, either to the same DataSource or to different DataSources that are related via a foreign key.
    `ColumnTree` | `setAddFormulaFieldText(java.lang.String addFormulaFieldText)` Text for a menu item allowing users to add a formula field
    `ColumnTree` | `setAddOperation(java.lang.String addOperation)` `operationId` this component should use when performing add operations.
    `ColumnTree` | `setAddSummaryFieldText(java.lang.String addSummaryFieldText)` Text for a menu item allowing users to add a formula field
    `ColumnTree` | `setAutoFetchAsFilter(java.lang.Boolean autoFetchAsFilter)` If `DataBoundComponent.setAutoFetchData(Boolean)` is true, this attribute determines whether the initial fetch operation should be performed via `DataBoundComponent.fetchData()` or `DataBoundComponent.filterData()`
    `ColumnTree` | `setAutoFetchData(java.lang.Boolean autoFetchData)` If true, when this component is first drawn, automatically call `DataBoundComponent.fetchData()` or `DataBoundComponent.filterData()` depending on `DataBoundComponent.getAutoFetchAsFilter()` .
    `ColumnTree` | `setAutoFetchTextMatchStyle(TextMatchStyle autoFetchTextMatchStyle)` If `autoFetchData` is `true`, this attribute allows the developer to specify a textMatchStyle for the initial `DataBoundComponent.fetchData()` call.
    `ColumnTree` | `setBackButtonTitle(java.lang.String backButtonTitle)` When using `single-column mode`, this i18n property dictates the title for the `button` docked to the top left which allows navigation back through the column tree.
    `ColumnTree` | `setCanAddFormulaFields(java.lang.Boolean canAddFormulaFields)` Adds an item to the header context menu allowing users to launch a dialog to define a new field based on values present in other fields, using the `com.smartgwt.client..FormulaBuilder`.
    `ColumnTree` | `setCanAddSummaryFields(java.lang.Boolean canAddSummaryFields)` Adds an item to the header context menu allowing users to launch a dialog to define a new text field that can contain both user-defined text and the formatted values present in other fields, using the `com.smartgwt.client..SummaryBuilder`.
    `ColumnTree` | `setCanDragRecordsOut(java.lang.Boolean canDragRecordsOut)` Indicates whether records can be dragged from this listGrid and dropped elsewhere.
    `ColumnTree` | `setClosedIconSuffix(java.lang.String closedIconSuffix)` This suffix will be appended to the `folderIcon` for closed folders.
    `void` | `setColumnProperties(ListGrid columnProperties)` Standard set of properties to apply to each generated `column` in this columnTree.
    `ColumnTree` | `setColumnTitles(java.lang.String... columnTitles)` With `fixedColumns` enabled, defines the header title for each column.
    `ColumnTree` | `setColumnWidths(java.lang.String... columnWidths)` With `fixedColumns` enabled, defines the pixel or % width per column.
    `ColumnTree` | `setCustomIconOpenProperty(java.lang.String customIconOpenProperty)` This property allows the developer to rename the `default node.showOpenIcon` property.
    `ColumnTree` | `setCustomIconProperty(java.lang.String customIconProperty)` This property allows the developer to customize the icon displayed next to a node.
    `ColumnTree` | `setData(Tree data)` A `Tree` object consisting of nested `TreeNode`s to display in this ColumnTree.
    `ColumnTree` | `setDataFetchMode(FetchMode dataFetchMode)` How to fetch and manage records retrieve from the server.
    `ColumnTree` | `setDataPageSize(int dataPageSize)` When using `data paging`, how many records to fetch at a time.
    `void` | `setDataProperties(Tree resultTreeProperties)` For databound ColumnTrees, this attribute can be used to customize the ResultTree object created for this ColumnTree when data is fetched.
    `ColumnTree` | `setDataSource(DataSource dataSource)` The DataSource that this component should bind to for default fields and for performing `DataSource requests`.
    `void` | `setDataSource(DataSource dataSource, ListGridField... fields)` Bind to a DataSource.
    `ColumnTree` | `setDataSource(java.lang.String dataSource)` The DataSource that this component should bind to for default fields and for performing `DataSource requests`.
    `ColumnTree` | `setDeepCloneOnEdit(java.lang.Boolean deepCloneOnEdit)` Before we start editing values in this DataBoundComponent, should we perform a deep clone of the underlying values.
    `static void` | `setDefaultProperties(ColumnTree columnTreeProperties)` Class level method to set the default properties of this class.
    `ColumnTree` | `setDragDataAction(DragDataAction dragDataAction)` Indicates what to do with data dragged into another DataBoundComponent.
    `ColumnTree` | `setDragDataCustomizer(DragDataCustomizer customizer)` During a drag-and-drop interaction, this method returns the set of records being dragged out of the component.
    `ColumnTree` | `setDragTrackerStyle(java.lang.String dragTrackerStyle)` CSS Style to apply to the drag tracker when dragging occurs on this component.
    `void` | `setDropIconSuffix(java.lang.String dropIconSuffix)` If `showDropIcons` is true, this suffix will be appended to the `folderIcon` when the user drop-hovers over some folder.
    `ColumnTree` | `setDropValues(java.util.Map dropValues)` When an item is dropped on this component, and `addDropValues` is true and both the source and target widgets are databound, either to the same DataSource or to different DataSources that are related via a foreign key, this object provides the "drop values" that Smart GWT will apply to the dropped object before updating it.
    `ColumnTree` | `setDuplicateDragMessage(java.lang.String duplicateDragMessage)` Message to show when a user attempts to transfer duplicate records into this component, and `preventDuplicates` is enabled.
    `ColumnTree` | `setEditFormulaFieldText(java.lang.String editFormulaFieldText)` Text for a menu item allowing users to edit a formula field
    `ColumnTree` | `setEditSummaryFieldText(java.lang.String editSummaryFieldText)` Text for a menu item allowing users to edit the formatter for a field
    `ColumnTree` | `setEmptyColumnMessages(java.lang.String... emptyColumnMessages)` With `fixedColumns` enabled, defines each column's `ListGrid.emptyMessage`.
    `ColumnTree` | `setExportAll(java.lang.Boolean exportAll)` Setting exportAll to true prevents the component from passing its list of fields to the export call.
    `ColumnTree` | `setExportFields(java.lang.String[] exportFields)` The list of field-names to export.
    `ColumnTree` | `setExportIncludeSummaries(java.lang.Boolean exportIncludeSummaries)` If Summary rows exist for this component, whether to include them when exporting client data.
    `ColumnTree` | `setFetchOperation(java.lang.String fetchOperation)` Operation ID this component should use when performing fetch operations.
    `ColumnTree` | `setFields(com.google.gwt.core.client.JavaScriptObject... fields)` Field setter variant (alternative to `setFields(FormItem...)`, `setFields(ListGridField...)`, etc.) that will accept an array of JavaScriptObject, rather than an array of SmartGWT Java wrappers of the field class type (e.g.
    `ColumnTree` | `setFields(ListGridField... fields)` An array of field objects, specifying the order, layout, dynamic calculation, and sorting behavior of each field in each column in the columnTree object.
    `ColumnTree` | `setFirstColumnTitle(java.lang.String firstColumnTitle)` A title for the leftmost column if `showHeaders` is set (the remaining columns have their titles derived from the item selected in the column to the left).
    `ColumnTree` | `setFixedColumns(java.lang.Integer fixedColumns)` Enables fixed columns mode.
    `ColumnTree` | `setFolderIcon(java.lang.String folderIcon)` The URL of the base icon for all folder nodes in this columnTree.
    `ColumnTree` | `setHiliteProperty(java.lang.String hiliteProperty)` Marker that can be set on a record to flag that record as hilited.
    `ColumnTree` | `setHilites(Hilite[] hilites)` Accepts an array of hilite objects and applies them to this DataBoundComponent.
    `ColumnTree` | `setHiliteState(java.lang.String hiliteState)` Set the current hilites based on a hiliteState String previously returned from getHilitesState.
    `ColumnTree` | `setImplicitCriteria(Criteria implicitCriteria)` Criteria that are never shown to or edited by the user and are cumulative with any criteria provided via `DataBoundComponent.initialCriteria`, `DataBoundComponent.setCriteria()` etc.
    `java.lang.Boolean` | `setImplicitCriteria(Criteria implicitCriteria, DSCallback callback)`
    `java.lang.Boolean` | `setImplicitCriteria(Criteria criteria, DSCallback callback, java.lang.Boolean initialFetch)`
    `ColumnTree` | `setInitialCriteria(Criteria initialCriteria)` Criteria to use when `DataBoundComponent.setAutoFetchData(Boolean)` is used.
    `ColumnTree` | `setLoadDataOnDemand(java.lang.Boolean loadDataOnDemand)` For databound columnTree instances, should the entire tree of data be loaded on initial fetch, or should each column be loaded as needed.
    `com.smartgwt.logicalstructure.core.LogicalStructureObject` | `setLogicalStructure(com.smartgwt.logicalstructure.widgets.grid.ColumnTreeLogicalStructure s)` Setter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.
    `ColumnTree` | `setNodeIcon(java.lang.String nodeIcon)` The filename of the default icon for all leaf nodes in this grid.
    `ColumnTree` | `setOpenIconSuffix(java.lang.String openIconSuffix)` If `showOpenIcons` is true, this suffix will be appended to the `folderIcon` for open folders in this grid.
    `ColumnTree` | `setPreventDuplicates(java.lang.Boolean preventDuplicates)` If set, detect and prevent duplicate records from being transferred to this component, either via drag and drop or via `DataBoundComponent.transferSelectedData(com.smartgwt.client.widgets.DataBoundComponent)`.
    `ColumnTree` | `setProgressiveLoading(java.lang.Boolean progressiveLoading)` Indicates whether or not this component will load its data `progressively`
    `ColumnTree` | `setRemoveOperation(java.lang.String removeOperation)` `operationId` this component should use when performing remove operations.
    `ColumnTree` | `setShowComplexFields(java.lang.Boolean showComplexFields)` Whether to show fields of non-atomic types when a DataBoundComponent is given a DataSource but no `component.fields`.
    `ColumnTree` | `setShowCustomIconOpen(java.lang.Boolean showCustomIconOpen)` Should folder nodes showing custom icons (set via the `customIconProperty`), show open state images when the folder is opened.
    `ColumnTree` | `setShowDetailFields(java.lang.Boolean showDetailFields)` Whether to show fields marked `detail:true` when a DataBoundComponent is given a DataSource but no `component.fields`.
    `void` | `setShowDropIcons(java.lang.Boolean showDropIcons)` If true, when the user drags a droppable target over a folder in this TreeGrid, show a different icon folder icon.
    `ColumnTree` | `setShowHeaders(java.lang.Boolean showHeaders)` If set, each column in the ColumnTree will show a header with the title of the selected node from the column to the left.
    `ColumnTree` | `setShowHiddenFields(java.lang.Boolean showHiddenFields)` Whether to show fields marked `hidden:true` when a DataBoundComponent is given a DataSource but no `component.fields`.
    `ColumnTree` | `setShowMultipleColumns(java.lang.Boolean showMultipleColumns)` When set to false, only displays a single column at a time, showing a slide animation when moving between columns.
    `ColumnTree` | `setShowNodeCount(java.lang.Boolean showNodeCount)` If set, and `showHeaders` is also set, each column's header will show a count of the number of nodes in that column
    `ColumnTree` | `setShowOpenIcons(java.lang.Boolean showOpenIcons)` If true, show a different icon for `open` folders than closed folders.
    `ColumnTree` | `setSort(SortSpecifier... sortSpecifiers)` Sort the component on one or more fields.
    `ColumnTree` | `setTitleField(java.lang.String titleField)` Sets the best field to use for a user-visible title for an individual record from this component.
    `ColumnTree` | `setUpdateOperation(java.lang.String updateOperation)` `operationId` this component should use when performing update operations.
    `ColumnTree` | `setUseAllDataSourceFields(java.lang.Boolean useAllDataSourceFields)` If true, the set of fields given by the "default binding" (see `fields`) is used, with any fields specified in `component.fields` acting as overrides that can suppress or modify the display of individual fields, without having to list the entire set of fields that should be shown.
    `ColumnTree` | `setUseFlatFields(java.lang.Boolean useFlatFields)` The `useFlatFields` flag causes all simple type fields anywhere in a nested set of DataSources to be exposed as a flat list for form binding.
    `void` | `shouldShowHeader(TreeNode node, int colNum)` Whether the indicated column should show a header.
    `void` | `transferNodes(TreeNode[] nodes, TreeNode folder, java.lang.Integer index, Canvas sourceWidget)` Transfer a list of `TreeNode`s within this treeGrid or from from some other component (does not have to be a databound component) into this component.
    `void` | `transferNodes(TreeNode[] nodes, TreeNode folder, java.lang.Integer index, Canvas sourceWidget, java.lang.String callback)` Transfer a list of `TreeNode`s within this treeGrid or from from some other component (does not have to be a databound component) into this component.
    `void` | `transferRecords(Record[] records, Record targetRecord, java.lang.Integer index, Canvas sourceWidget, TransferRecordsCallback callback)` Transfer a list of `Record`s from another component (does not have to be a databound component) into this component.
    `void` | `transferSelectedData(DataBoundComponent source)` Simulates a drag / drop type transfer of the selected records in some other component to this component, without requiring any user interaction.
    `void` | `transferSelectedData(DataBoundComponent source, int index)` Simulates a drag / drop type transfer of the selected records in some other component to this component, without requiring any user interaction.

    - ### Methods inherited from class com.smartgwt.client.widgets.layout.Layout

      `addMember, addMember, addMember, addMember, addMemberPostCreate, addMemberPostCreate, addMemberPreCreate, addMemberPreCreate, addMembers, addMembers, addMembersChangedHandler, getAnimateMembers, getAnimateMemberTime, getCanDropComponents, getChildTabPosition, getDefaultResizeBars, getDropComponent, getDropLine, getDropLineThickness, getDropPosition, getEditProxyConstructor, getEnforcePolicy, getHPolicy, getLayoutBottomMargin, getLayoutEndMargin, getLayoutLeftMargin, getLayoutMargin, getLayoutRightMargin, getLayoutStartMargin, getLayoutTopMargin, getLeaveScrollbarGap, getLocateMembersBy, getLocateMembersType, getManagePercentBreadth, getMember, getMember, getMemberDefaultBreadth, getMemberNumber, getMemberNumber, getMemberOverlap, getMembers, getMembersLength, getMembersMargin, getMinMemberLength, getMinMemberSize, getOverflow, getPaddingAsLayoutMargin, getResizeBar, getResizeBarClass, getResizeBarSize, getReverseOrder, getShowDragPlaceHolder, getShowDropLines, getStackZIndex, getVertical, getVPolicy, hasMember, hideDropLine, hideMember, hideMember, layoutIsDirty, onInit_Layout, reflow, reflow, reflowNow, removeMember, removeMembers, removeMembers, reorderMember, reorderMembers, replaceMember, revealChild, revealChild, setAlign, setAlign, setAnimateMembers, setAnimateMemberTime, setCanDropComponents, setDefaultLayoutAlign, setDefaultLayoutAlign, setDefaultProperties, setDefaultResizeBars, setDropLineProperties, setDropLineThickness, setEditProxyConstructor, setEnforcePolicy, setHPolicy, setLayoutBottomMargin, setLayoutEndMargin, setLayoutLeftMargin, setLayoutMargin, setLayoutRightMargin, setLayoutStartMargin, setLayoutTopMargin, setLeaveScrollbarGap, setLocateMembersBy, setLocateMembersType, setLogicalStructure, setManagePercentBreadth, setMemberOverlap, setMembers, setMembersMargin, setMinBreadthMember, setMinBreadthMember, setMinBreadthMember, setMinMemberLength, setMinMemberSize, setOverflow, setPaddingAsLayoutMargin, setPlaceHolderDefaults, setPlaceHolderProperties, setResizeBarClass, setResizeBarSize, setReverseOrder, setShowDragPlaceHolder, setShowDropLines, setStackZIndex, setVertical, setVisibleMember, setVPolicy, showMember, showMember`

    - ### Methods inherited from class com.smartgwt.client.widgets.Canvas

      `addChild, addChild, addChild, addChild, addChild, addClearHandler, addClickHandler, addDoubleClickHandler, addDragMoveHandler, addDragRepositionMoveHandler, addDragRepositionStartHandler, addDragRepositionStopHandler, addDragResizeMoveHandler, addDragResizeStartHandler, addDragResizeStopHandler, addDragStartHandler, addDragStopHandler, addDropHandler, addDropMoveHandler, addDropOutHandler, addDropOverHandler, addFocusChangedHandler, addHoverHandler, addHoverHiddenHandler, addKeyDownHandler, addKeyPressHandler, addMouseDownHandler, addMouseMoveHandler, addMouseOutHandler, addMouseOverHandler, addMouseStillDownHandler, addMouseUpHandler, addMouseWheelHandler, addMovedHandler, addParentMovedHandler, addPeer, addPeer, addPeer, addPeer, addResizedHandler, addRightMouseDownHandler, addRuleContextChangedHandler, addScrolledHandler, addShowContextMenuHandler, addSnapAlignCandidate, addStyleName, addVisibilityChangedHandler, adjustForContent, animateFade, animateFade, animateFade, animateFade, animateFade, animateFade, animateFade, animateFade, animateHide, animateHide, animateHide, animateHide, animateHide, animateHide, animateHide, animateMove, animateMove, animateMove, animateMove, animateRect, animateRect, animateRect, animateRect, animateResize, animateResize, animateResize, animateResize, animateScroll, animateScroll, animateScroll, animateScroll, animateScroll, animateScroll, animateShow, animateShow, animateShow, animateShow, animateShow, animateShow, animateShow, asSGWTComponent, blur, bringToFront, clear, clearExplicitTabIndex, clickMaskUp, clickMaskUp, contains, contains, containsEvent, containsEventTarget, containsFocus, containsPoint, containsPoint, deparent, depeer, disable, enable, encloses, focus, focusAfterGroup, focusAtEnd, focusInNextTabElement, focusInPreviousTabElement, getAbsoluteLeft, getAbsoluteTop, getAccessKey, getAdaptiveHeightPriority, getAdaptiveWidthPriority, getAlwaysManageFocusNavigation, getAlwaysShowScrollbars, getAnimateAcceleration, getAnimateFadeTime, getAnimateHideAcceleration, getAnimateHideEffect, getAnimateHideTime, getAnimateMoveAcceleration, getAnimateMoveTime, getAnimateRectAcceleration, getAnimateRectTime, getAnimateResizeAcceleration, getAnimateResizeLayoutMode, getAnimateResizeTime, getAnimateScrollAcceleration, getAnimateScrollTime, getAnimateShowAcceleration, getAnimateShowEffect, getAnimateShowTime, getAnimateTime, getAppImgDir, getAriaHandleID, getAriaRole, getAutoMaskComponents, getAutoParent, getAutoShowParent, getBackgroundColor, getBackgroundImage, getBackgroundPosition, getBackgroundRepeat, getBorder, getBottom, getById, getByJSObject, getByLocalId, getCanAcceptDrop, getCanAdaptHeight, getCanAdaptWidth, getCanDrag, getCanDragReposition, getCanDragResize, getCanDragScroll, getCanDrop, getCanDropBefore, getCanFocus, getCanHover, getCanSelectText, getCanvasAutoChild, getCanvasItem, getChildren, getChildrenResizeSnapAlign, getChildrenSnapAlign, getChildrenSnapCenterAlign, getChildrenSnapEdgeAlign, getChildrenSnapResizeToGrid, getChildrenSnapToGrid, getClassName, getComponentMask, getComponentMaskDefaults, getContentElement, getContents, getContextMenu, getCorrectZoomOverflow, getCursor, getDataPath, getDefaultHeight, getDefaultWidth, getDestroyed, getDestroying, getDisabled, getDisabledCursor, getDisableTouchScrollingForDrag, getDoubleClickDelay, getDragAppearance, getDragIntersectStyle, getDragMaskType, getDragMaxHeight, getDragMaxWidth, getDragMinHeight, getDragMinWidth, getDragOpacity, getDragRepositionAppearance, getDragRepositionCursor, getDragResizeAppearance, getDragScrollDelay, getDragStartDistance, getDragTarget, getDragType, getDropTypes, getDropTypesAsString, getDynamicContents, getEdgeBackgroundColor, getEdgeCenterBackgroundColor, getEdgeImage, getEdgeMarginSize, getEdgeOffset, getEdgeOpacity, getEdgeShowCenter, getEdgeSize, getEditNode, getEditProxy, getElement, getElement, getEnableWhen, getEndLine, getEventEdge, getEventEdge, getExtraSpace, getFacetId, getFormItemAutoChild, getForwardSVGeventsToObject, getFullDataPath, getGroupBorderCSS, getGroupLabelBackgroundColor, getGroupLabelStyleName, getGroupTitle, getHeight, getHeightAsString, getHideUsingDisplayNone, getHoverAlign, getHoverAutoDestroy, getHoverAutoFitMaxWidth, getHoverAutoFitMaxWidthAsString, getHoverAutoFitWidth, getHoverComponent, getHoverDelay, getHoverHeight, getHoverHTML, getHoverMoveWithMouse, getHoverOpacity, getHoverStyle, getHoverVAlign, getHoverWidth, getHoverWrap, getHSnapOrigin, getHSnapOrigin, getHSnapPosition, getHSnapPosition, getHtmlElement, getHtmlPosition, getImage, getImgURL, getImgURL, getInnerContentHeight, getInnerContentWidth, getInnerHeight, getInnerWidth, getIsGroup, getIsPrinting, getIsRuleScope, getIsSnapAlignCandidate, getKeepInParentRect, getLayoutAlign, getLeavePageSpace, getLeft, getLeftAsString, getLocalId, getLocateChildrenBy, getLocateChildrenType, getLocatePeersBy, getLocatePeersType, getLocatorName, getMargin, getMasterCanvas, getMasterElement, getMatchElement, getMaxHeight, getMaxWidth, getMaxZoomOverflowError, getMenuConstructor, getMinHeight, getMinNonEdgeSize, getMinWidth, getMomentumScrollMinSpeed, getMouseStillDownDelay, getMouseStillDownInitialDelay, getName, getNextZIndex, getNoDoubleClicks, getNoDropCursor, getOffsetHeight, getOffsetWidth, getOffsetX, getOffsetY, getOpacity, getOuterElement, getPadding, getPageBottom, getPageLeft, getPageRect, getPageRight, getPageTop, getPaletteDefaults, getPanelContainer, getParentCanvas, getParentElement, getPeers, getPercentBox, getPercentSource, getPosition, getPrefix, getPrintChildrenAbsolutelyPositioned, getPrintHTML, getPrintHTML, getPrintStyleName, getPrompt, getProportionalResizeModifiers, getProportionalResizing, getReceiveScrollbarEvents, getRect, getRedrawOnResize, getResizeBarTarget, getResizeFrom, getRight, getRuleContext, getRuleContext, getRuleScope, getScrollbarSize, getScrollBottom, getScrollHeight, getScrollLeft, getScrollRight, getScrollTop, getScrollWidth, getShadowColor, getShadowDepth, getShadowHOffset, getShadowImage, getShadowOffset, getShadowSoftness, getShadowSpread, getShadowVOffset, getShouldPrint, getShowCustomScrollbars, getShowDragShadow, getShowEdges, getShowHover, getShowHoverComponents, getShowResizeBar, getShowShadow, getShowSnapGrid, getShrinkElementOnHide, getSizeMayChangeOnRedraw, getSkinImgDir, getSnapAlignCandidates, getSnapAlignCenterLineStyle, getSnapAlignEdgeLineStyle, getSnapAxis, getSnapEdge, getSnapGridLineProperties, getSnapGridStyle, getSnapHDirection, getSnapHGap, getSnapOffsetLeft, getSnapOffsetTop, getSnapOnDrop, getSnapPosition, getSnapPosition, getSnapResizeToAlign, getSnapResizeToGrid, getSnapTo, getSnapToAlign, getSnapToCenterAlign, getSnapToEdgeAlign, getSnapToGrid, getSnapVDirection, getSnapVGap, getStartLine, getStyleName, getTabIndex, getTestInstance, getTitle, getTooltip, getTop, getTopAsString, getTopElement, getUpdateTabPositionOnDraw, getUpdateTabPositionOnReparent, getUseBackMask, getUseCSSShadow, getUseDragMask, getUseImageForSVG, getUseNativeDrag, getUseOpacityFilter, getUseTouchScrolling, getValuesManager, getValuesManagerAsString, getViewportHeight, getViewportWidth, getVisibility, getVisibleHeight, getVisibleWhen, getVisibleWidth, getVSnapOrigin, getVSnapOrigin, getVSnapPosition, getVSnapPosition, getWidth, getWidthAsString, getZIndex, getZIndex, handleHover, hide, hideClickMask, hideClickMask, hideComponentMask, hideComponentMask, hideContextMenu, imgHTML, imgHTML, imgHTML, intersects, isDirty, isDisabled, isFocused, isVisible, keyUp, layoutChildren, linkHTML, linkHTML, linkHTML, linkHTML, linkHTML, linkHTML, markForDestroy, markForRedraw, markForRedraw, moveAbove, moveBelow, moveBy, moveTo, onAttach, onDetach, pageScrollDown, pageScrollUp, parentResized, placeNear, placeNear, placeNear, print, print, print, print, printComponents, provideRuleContext, provideRuleContext, redraw, redraw, registerFontScaledPaddingStyles, removeChild, removeChild, removePeer, removePeer, removeRuleContext, removeSnapAlignCandidate, resizeAutoChildAttributes, resizeBy, resizeControls, resizeFonts, resizeFonts, resizeFonts, resizeIcons, resizePadding, resizePadding, resizeTo, resizeTo, scrollBy, scrollByPercent, scrollTo, scrollTo, scrollTo, scrollToBottom, scrollToLeft, scrollToPercent, scrollToRight, scrollToTop, sendToBack, setAccessKey, setAdaptHeightByCustomizer, setAdaptiveHeightPriority, setAdaptiveWidthPriority, setAdaptWidthByCustomizer, setAllowExternalFilters, setAlwaysManageFocusNavigation, setAlwaysShowScrollbars, setAnimateAcceleration, setAnimateFadeTime, setAnimateHideAcceleration, setAnimateHideEffect, setAnimateHideTime, setAnimateMoveAcceleration, setAnimateMoveTime, setAnimateRectAcceleration, setAnimateRectTime, setAnimateResizeAcceleration, setAnimateResizeLayoutMode, setAnimateResizeTime, setAnimateScrollAcceleration, setAnimateScrollTime, setAnimateShowAcceleration, setAnimateShowEffect, setAnimateShowTime, setAnimateTime, setAppImgDir, setAriaRole, setAriaState, setAutoChildConstructor, setAutoChildProperties, setAutoChildProperties, setAutoChildProperties, setAutoChildProperties, setAutoChildVisibility, setAutoHeight, setAutoMaskComponents, setAutoParent, setAutoResizeAutoChildAttributes, setAutoResizeIcons, setAutoShowParent, setAutoWidth, setBackgroundColor, setBackgroundImage, setBackgroundPosition, setBackgroundRepeat, setBorder, setBottom, setCanAcceptDrop, setCanAdaptHeight, setCanAdaptWidth, setCanDrag, setCanDragReposition, setCanDragResize, setCanDragScroll, setCanDrop, setCanDropBefore, setCanFocus, setCanHover, setCanSelectText, setChildren, setChildrenResizeSnapAlign, setChildrenSnapAlign, setChildrenSnapCenterAlign, setChildrenSnapEdgeAlign, setChildrenSnapResizeToGrid, setChildrenSnapToGrid, setComponentMaskDefaults, setContents, setContextMenu, setCorrectZoomOverflow, setCursor, setDataPath, setDefaultHeight, setDefaultPageSpace, setDefaultProperties, setDefaultShowCustomScrollbars, setDefaultWidth, setDisabled, setDisabledCursor, setDisableTouchScrollingForDrag, setDoubleClickDelay, setDragAppearance, setDragIntersectStyle, setDragMaskType, setDragMaxHeight, setDragMaxWidth, setDragMinHeight, setDragMinWidth, setDragOpacity, setDragRepositionAppearance, setDragRepositionCursor, setDragResizeAppearance, setDragScrollDelay, setDragStartDistance, setDragTarget, setDragType, setDropTypes, setDropTypes, setDynamicContents, setEdgeBackgroundColor, setEdgeCenterBackgroundColor, setEdgeImage, setEdgeMarginSize, setEdgeOffset, setEdgeOpacity, setEdgeShowCenter, setEdgeSize, setEditMode, setEditMode, setEditMode, setElement, setEnableWhen, setEndLine, setExtraSpace, setFacetId, setForwardSVGeventsToObject, setGroupBorderCSS, setGroupLabelBackgroundColor, setGroupLabelStyleName, setGroupTitle, setHeight, setHeight, setHeight, setHeight100, setHideUsingDisplayNone, setHoverAlign, setHoverAutoDestroy, setHoverAutoFitMaxWidth, setHoverAutoFitMaxWidth, setHoverAutoFitWidth, setHoverDelay, setHoverHeight, setHoverMoveWithMouse, setHoverOpacity, setHoverStyle, setHoverVAlign, setHoverWidth, setHoverWrap, setHtmlElement, setHtmlPosition, setImage, setImage, setInitHandler, setIsGroup, setIsRuleScope, setIsSnapAlignCandidate, setKeepInParentRect, setKeepInParentRect, setKeepInParentRect, setLayoutAlign, setLayoutAlign, setLeavePageSpace, setLeft, setLeft, setLocateChildrenBy, setLocateChildrenType, setLocatePeersBy, setLocatePeersType, setLocatorName, setLogicalStructure, setMargin, setMatchElement, setMaxHeight, setMaxWidth, setMaxZoomOverflowError, setMenuConstructor, setMinHeight, setMinNonEdgeSize, setMinWidth, setMomentumScrollMinSpeed, setMouseStillDownDelay, setMouseStillDownInitialDelay, setName, setNeverUseFilters, setNoDoubleClicks, setNoDropCursor, setOpacity, setPadding, setPageLeft, setPageTop, setPanelContainer, setParentCanvas, setParentElement, setPeers, setPercentBox, setPercentSource, setPosition, setPrefix, setPrintChildrenAbsolutelyPositioned, setPrintStyleName, setPrompt, setProportionalResizeModifiers, setProportionalResizing, setReceiveScrollbarEvents, setRect, setRect, setRedrawOnResize, setRelativeTabPosition, setResizeBarTarget, setResizeFrom, setResizeFrom, setRight, setRuleScope, setScrollbarConstructor, setScrollbarSize, setShadowColor, setShadowDepth, setShadowHOffset, setShadowImage, setShadowOffset, setShadowSoftness, setShadowSpread, setShadowVOffset, setShouldPrint, setShowCustomScrollbars, setShowDragShadow, setShowEdges, setShowHover, setShowHoverComponents, setShowResizeBar, setShowShadow, setShowSnapGrid, setShrinkElementOnHide, setSizeMayChangeOnRedraw, setSkinImgDir, setSmoothFade, setSnapAlignCandidates, setSnapAlignCenterLineStyle, setSnapAlignEdgeLineStyle, setSnapAxis, setSnapEdge, setSnapGridLineProperties, setSnapGridStyle, setSnapHDirection, setSnapHGap, setSnapOffsetLeft, setSnapOffsetTop, setSnapOnDrop, setSnapResizeToAlign, setSnapResizeToGrid, setSnapTo, setSnapToAlign, setSnapToCenterAlign, setSnapToEdgeAlign, setSnapToGrid, setSnapVDirection, setSnapVGap, setStartLine, setStyleName, setTabIndex, setTitle, setTooltip, setTop, setTop, setUpdateTabPositionOnDraw, setUpdateTabPositionOnReparent, setUseBackMask, setUseCSSShadow, setUseDragMask, setUseImageForSVG, setUseNativeDrag, setUseOpacityFilter, setUseTouchScrolling, setValuesManager, setValuesManager, setVisibility, setVisible, setVisibleWhen, setWidth, setWidth, setWidth, setWidth100, setZIndex, shouldDragScroll, show, showClickMask, showComponentMask, showComponentMask, showNextTo, showNextTo, showNextTo, showNextTo, showPrintPreview, showPrintPreview, showPrintPreview, showPrintPreview, showRecursively, updateChildTabPosition, updateChildTabPositions, updateEditNode, updateHover, updateHover, updateShadow, updateTabPositionForDraw, visibleAtPoint, willAcceptDrop`

    - ### Methods inherited from class com.smartgwt.client.widgets.BaseWidget

      `addDrawHandler, addDynamicProperty, addDynamicProperty, addDynamicProperty, applyFactoryProperties, clearDynamicProperty, completeCreation, destroy, doAddHandler, doInit, doOnRender, draw, equals, error, errorIfNotCreated, getAttribute, getAttributeAsBoolean, getAttributeAsDate, getAttributeAsDateArray, getAttributeAsDouble, getAttributeAsElement, getAttributeAsFloat, getAttributeAsFloatArray, getAttributeAsInt, getAttributeAsIntArray, getAttributeAsJavaScriptObject, getAttributeAsMap, getAttributeAsObject, getAttributeAsRecord, getAttributeAsString, getAttributeAsStringArray, getConfig, getDOM, getHandlerCount, getID, getInnerHTML, getJsObj, getOrCreateJsObj, getRef, getScClassName, hasAutoAssignedID, hasDynamicProperty, hashCode, initNativeObject, internalSetID, internalSetID, isConfigOnly, isCreated, isDrawn, isFactoryCreated, onBind, onDestroy, onDraw, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setConfig, setConfigOnly, setDefaultProperties, setDragTracker, setFactoryCreated, setID, setJavaScriptObject, setLogicalStructure, setLogicalStructure, setNullProperty, setPosition, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setScClassName, toString`

    - ### Methods inherited from class com.google.gwt.user.client.ui.Widget

      `addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getLayoutData, getParent, isAttached, isOrWasAttached, onBrowserEvent, onLoad, onUnload, removeFromParent, setLayoutData, sinkEvents, unsinkEvents`

    - ### Methods inherited from class com.google.gwt.user.client.ui.UIObject

      `addStyleDependentName, ensureDebugId, ensureDebugId, ensureDebugId, getStyleElement, getStyleName, getStylePrimaryName, getStylePrimaryName, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, resolvePotentialElement, setElement, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setVisible, sinkBitlessEvent`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

    - ### Methods inherited from interface com.smartgwt.client.widgets.DataBoundComponent

      `getOrCreateJsObj`

    - ### Methods inherited from interface com.google.gwt.event.shared.HasHandlers

      `fireEvent`

- - ### Constructor Detail

    - #### ColumnTree

          public ColumnTree()

    - #### ColumnTree

          public ColumnTree(com.google.gwt.core.client.JavaScriptObject jsObj)

  - ### Method Detail

    - #### getOrCreateRef

          public static ColumnTree getOrCreateRef(com.google.gwt.core.client.JavaScriptObject jsObj)

    - #### changeAutoChildDefaults

          public static void changeAutoChildDefaults(java.lang.String autoChildName,
                                                     Canvas defaults)

      Changes the defaults for Canvas AutoChildren named `autoChildName`.
      Parameters:
        `autoChildName` - name of an AutoChild to customize the defaults for.
        `defaults` - Canvas defaults to apply. These defaults override any existing properties without destroying or wiping out non-overridden properties. For usage tips on this param, see `SGWTProperties`.
      See Also:
        `AutoChildUsage`

    - #### changeAutoChildDefaults

          public static void changeAutoChildDefaults(java.lang.String autoChildName,
                                                     FormItem defaults)

      Changes the defaults for FormItem AutoChildren named `autoChildName`.
      Parameters:
        `autoChildName` - name of an AutoChild to customize the defaults for.
        `defaults` - FormItem defaults to apply. These defaults override any existing properties without destroying or wiping out non-overridden properties. For usage tips on this param, see `SGWTProperties`.
      See Also:
        `AutoChildUsage`

    - #### create

          protected com.google.gwt.core.client.JavaScriptObject create()

      Overrides:
        `create` in class `Layout`

    - #### getBackButton

          public IButton getBackButton()
                                throws java.lang.IllegalStateException

      When using `single-column mode`, this is the "Back" button that you see hovering above the column UI and that allows backward navigation.

      This component is an AutoChild named "backButton". For an overview of how to use and configure AutoChildren, see `Using AutoChildren`.

      Returns:
        Current backButton value. Default value is null
      Throws:
        `java.lang.IllegalStateException` - if this widget has not yet been rendered.

    - #### setBackButtonTitle

          public ColumnTree setBackButtonTitle(java.lang.String backButtonTitle)

      When using `single-column mode`, this i18n property dictates the title for the `button` docked to the top left which allows navigation back through the column tree.
      Parameters:
        `backButtonTitle` - New backButtonTitle value. Default value is "Back"
      Returns:
        `ColumnTree` instance, for chaining setter calls

    - #### getBackButtonTitle

          public java.lang.String getBackButtonTitle()

      When using `single-column mode`, this i18n property dictates the title for the `button` docked to the top left which allows navigation back through the column tree.
      Returns:
        Current backButtonTitle value. Default value is "Back"

    - #### setCanDragRecordsOut

          public ColumnTree setCanDragRecordsOut(java.lang.Boolean canDragRecordsOut)

      Indicates whether records can be dragged from this listGrid and dropped elsewhere.

      NOTE: If `canDragRecordsOut` is initially enabled or might be dynamically enabled after the grid is created, it may be desirable to disable `touch scrolling` so that touch-dragging a record starts a drag operation rather than a scroll, but see the discussion of `drag handles`. If `Canvas.disableTouchScrollingForDrag` is set to `true`, then touch scrolling will be disabled automatically. However, for `accessibility` reasons, it is recommended to leave touch scrolling enabled and provide an alternative set of controls that can be used to perform drag and drop of records out of the grid.

      Parameters:
        `canDragRecordsOut` - New canDragRecordsOut value. Default value is false
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        `TreeNode.setCanDrag(java.lang.Boolean)`, `TreeNode.setCanAcceptDrop(java.lang.Boolean)`, `ListGrid.showDragHandles()`, `Dragdrop overview and related methods`, Drop Events Example

    - #### getCanDragRecordsOut

          public java.lang.Boolean getCanDragRecordsOut()

      Indicates whether records can be dragged from this listGrid and dropped elsewhere.

      NOTE: If `canDragRecordsOut` is initially enabled or might be dynamically enabled after the grid is created, it may be desirable to disable `touch scrolling` so that touch-dragging a record starts a drag operation rather than a scroll, but see the discussion of `drag handles`. If `Canvas.disableTouchScrollingForDrag` is set to `true`, then touch scrolling will be disabled automatically. However, for `accessibility` reasons, it is recommended to leave touch scrolling enabled and provide an alternative set of controls that can be used to perform drag and drop of records out of the grid.

      Returns:
        Current canDragRecordsOut value. Default value is false
      See Also:
        `TreeNode.getCanDrag()`, `TreeNode.getCanAcceptDrop()`, `ListGrid.showDragHandles()`, `Dragdrop overview and related methods`, Drop Events Example

    - #### setClosedIconSuffix

          public ColumnTree setClosedIconSuffix(java.lang.String closedIconSuffix)

      This suffix will be appended to the `folderIcon` for closed folders. If `showOpenIcons` is set to `false` this suffix will also be appended to open folders' icons.
      Parameters:
        `closedIconSuffix` - New closedIconSuffix value. Default value is "closed"
      Returns:
        `ColumnTree` instance, for chaining setter calls

    - #### getClosedIconSuffix

          public java.lang.String getClosedIconSuffix()

      This suffix will be appended to the `folderIcon` for closed folders. If `showOpenIcons` is set to `false` this suffix will also be appended to open folders' icons.
      Returns:
        Current closedIconSuffix value. Default value is "closed"

    - #### getColumn

          public ListGrid getColumn()

      Note : This API is non-functional (always returns null) and exists only to make you aware that this MultiAutoChild exists. See `Using AutoChildren` for details.

      Instance of ListGrid used to display each column of the tree.

      Returns:
        null

    - #### setColumnTitles

          public ColumnTree setColumnTitles(java.lang.String... columnTitles)
                                     throws java.lang.IllegalStateException

      With `fixedColumns` enabled, defines the header title for each column.
      Parameters:
        `columnTitles` - New columnTitles value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getColumnTitles

          public java.lang.String[] getColumnTitles()

      With `fixedColumns` enabled, defines the header title for each column.
      Returns:
        Current columnTitles value. Default value is null

    - #### setColumnWidths

          public ColumnTree setColumnWidths(java.lang.String... columnWidths)
                                     throws java.lang.IllegalStateException

      With `fixedColumns` enabled, defines the pixel or % width per column.
      Parameters:
        `columnWidths` - New columnWidths value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getColumnWidths

          public java.lang.String[] getColumnWidths()

      With `fixedColumns` enabled, defines the pixel or % width per column.
      Returns:
        Current columnWidths value. Default value is null

    - #### setCustomIconOpenProperty

          public ColumnTree setCustomIconOpenProperty(java.lang.String customIconOpenProperty)

      This property allows the developer to rename the `default node.showOpenIcon` property.

      Note : This is an advanced setting

      Parameters:
        `customIconOpenProperty` - New customIconOpenProperty value. Default value is "showOpenIcon"
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        `TreeGrid.setCustomIconProperty(java.lang.String)`, `TreeGrid.setShowCustomIconOpen(java.lang.Boolean)`

    - #### getCustomIconOpenProperty

          public java.lang.String getCustomIconOpenProperty()

      This property allows the developer to rename the `default node.showOpenIcon` property.
      Returns:
        Current customIconOpenProperty value. Default value is "showOpenIcon"
      See Also:
        `TreeGrid.getCustomIconProperty()`, `TreeGrid.getShowCustomIconOpen()`

    - #### setCustomIconProperty

          public ColumnTree setCustomIconProperty(java.lang.String customIconProperty)

      This property allows the developer to customize the icon displayed next to a node. Set `node[grid.customIconProperty]` to the URL of the desired icon to display and it will be shown instead of the standard `nodeIcon` for this node.
      Note that if `showCustomIconOpen` is true for this grid, customized icons for folder nodes will be appended with the `openIconSuffix` suffix on state change, as with the standard `folderIcon`. Also note that for custom folder icons, the `closedIconSuffix` will never be appended.
      Parameters:
        `customIconProperty` - New customIconProperty value. Default value is "icon"
      Returns:
        `ColumnTree` instance, for chaining setter calls

    - #### getCustomIconProperty

          public java.lang.String getCustomIconProperty()

      This property allows the developer to customize the icon displayed next to a node. Set `node[grid.customIconProperty]` to the URL of the desired icon to display and it will be shown instead of the standard `nodeIcon` for this node.
      Note that if `showCustomIconOpen` is true for this grid, customized icons for folder nodes will be appended with the `openIconSuffix` suffix on state change, as with the standard `folderIcon`. Also note that for custom folder icons, the `closedIconSuffix` will never be appended.
      Returns:
        Current customIconProperty value. Default value is "icon"

    - #### setData

          public ColumnTree setData(Tree data)

      A `Tree` object consisting of nested `TreeNode`s to display in this ColumnTree. The `data` property will typically not be explicitly specified for databound ColumnTrees, where the data is returned from the server via databound component methods such as `fetchData()`
      If this method is called after the component has been drawn/initialized: Set the `Tree` object this ColumnTree will view
      Parameters:
        `data` - Tree to show. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls

    - #### getData

          public Tree getData()

      A `Tree` object consisting of nested `TreeNode`s to display in this ColumnTree. The `data` property will typically not be explicitly specified for databound ColumnTrees, where the data is returned from the server via databound component methods such as `fetchData()`
      Returns:
        Returns the `Tree` object this ColumnTree is viewing. Default value is null

    - #### setDataFetchMode

          public ColumnTree setDataFetchMode(FetchMode dataFetchMode)

      How to fetch and manage records retrieve from the server. See `FetchMode`.

      This setting only applies to the `ResultSet` automatically created by calling `fetchData()`. If a pre-existing ResultSet is passed to setData() instead, it's existing setting for `ResultSet.fetchMode` applies.

      Specified by:
        `setDataFetchMode` in interface `DataBoundComponent`
      Parameters:
        `dataFetchMode` - New dataFetchMode value. Default value is "paged"
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        `Databinding overview and related methods`

    - #### getDataFetchMode

          public FetchMode getDataFetchMode()

      How to fetch and manage records retrieve from the server. See `FetchMode`.

      This setting only applies to the `ResultSet` automatically created by calling `fetchData()`. If a pre-existing ResultSet is passed to setData() instead, it's existing setting for `ResultSet.fetchMode` applies.

      Specified by:
        `getDataFetchMode` in interface `DataBoundComponent`
      Returns:
        Current dataFetchMode value. Default value is "paged"
      See Also:
        `Databinding overview and related methods`

    - #### getDataProperties

          public Tree getDataProperties()

      For a `ColumnTree` that uses a DataSource, these properties will be passed to the automatically-created ResultTree. This can be used for various customizations such as modifying the automatically-chosen `Tree.parentIdField`.
      Returns:
        Current dataProperties value. Default value is null
      See Also:
        `Databinding overview and related methods`

    - #### setDataSource

          public ColumnTree setDataSource(DataSource dataSource)

      The DataSource that this component should bind to for default fields and for performing `DataSource requests`.

      Can be specified as either a DataSource instance or the String ID of a DataSource.

      Specified by:
        `setDataSource` in interface `DataBoundComponent`
      Parameters:
        `dataSource` - New dataSource value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        `Databinding overview and related methods`, DataSource fields Example

    - #### setDataSource

          public ColumnTree setDataSource(java.lang.String dataSource)

      The DataSource that this component should bind to for default fields and for performing `DataSource requests`.

      Can be specified as either a DataSource instance or the String ID of a DataSource.

      Specified by:
        `setDataSource` in interface `DataBoundComponent`
      Parameters:
        `dataSource` - New dataSource value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        `Databinding overview and related methods`, DataSource fields Example

    - #### setEmptyColumnMessages

          public ColumnTree setEmptyColumnMessages(java.lang.String... emptyColumnMessages)
                                            throws java.lang.IllegalStateException

      With `fixedColumns` enabled, defines each column's `ListGrid.emptyMessage`.
      Parameters:
        `emptyColumnMessages` - New emptyColumnMessages value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getEmptyColumnMessages

          public java.lang.String[] getEmptyColumnMessages()

      With `fixedColumns` enabled, defines each column's `ListGrid.emptyMessage`.
      Returns:
        Current emptyColumnMessages value. Default value is null

    - #### setFields

          public ColumnTree setFields(ListGridField... fields)

      An array of field objects, specifying the order, layout, dynamic calculation, and sorting behavior of each field in each column in the columnTree object. In ColumnTrees, the fields array specifies sub-columns within each main column. Each field in the fields array is a ListGridField object.

      If `dataSource` is also set, this value acts as a set of overrides as explained in `DataBoundComponent.fields`.

      Parameters:
        `fields` - New fields value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        `ListGridField`, `Databinding overview and related methods`

    - #### setFirstColumnTitle

          public ColumnTree setFirstColumnTitle(java.lang.String firstColumnTitle)
                                         throws java.lang.IllegalStateException

      A title for the leftmost column if `showHeaders` is set (the remaining columns have their titles derived from the item selected in the column to the left). Ignored if `showHeaders` is not set.
      Note: if you do not want a heading for the first column leave this attribute at its default value of " ". If you set it to null or the empty string, Smart GWT will fall back to displaying the field's name in the heading.
      Parameters:
        `firstColumnTitle` - New firstColumnTitle value. Default value is " "
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getFirstColumnTitle

          public java.lang.String getFirstColumnTitle()

      A title for the leftmost column if `showHeaders` is set (the remaining columns have their titles derived from the item selected in the column to the left). Ignored if `showHeaders` is not set.
      Note: if you do not want a heading for the first column leave this attribute at its default value of " ". If you set it to null or the empty string, Smart GWT will fall back to displaying the field's name in the heading.
      Returns:
        Current firstColumnTitle value. Default value is " "

    - #### setFixedColumns

          public ColumnTree setFixedColumns(java.lang.Integer fixedColumns)
                                     throws java.lang.IllegalStateException

      Enables fixed columns mode. All columns are created in advance instead of as navigation occurs.
      Parameters:
        `fixedColumns` - New fixedColumns value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getFixedColumns

          public java.lang.Integer getFixedColumns()

      Enables fixed columns mode. All columns are created in advance instead of as navigation occurs.
      Returns:
        Current fixedColumns value. Default value is null

    - #### setFolderIcon

          public ColumnTree setFolderIcon(java.lang.String folderIcon)

      The URL of the base icon for all folder nodes in this columnTree. Note that this URL will have `openIconSuffix` or `closedIconSuffix` appended to indicate state changes if appropriate - see documentation on `showOpenIcons`
      Parameters:
        `folderIcon` - New folderIcon value. Default value is "[SKIN]folder.png"
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        `SCImgURL`

    - #### getFolderIcon

          public java.lang.String getFolderIcon()

      The URL of the base icon for all folder nodes in this columnTree. Note that this URL will have `openIconSuffix` or `closedIconSuffix` appended to indicate state changes if appropriate - see documentation on `showOpenIcons`
      Returns:
        Current folderIcon value. Default value is "[SKIN]folder.png"
      See Also:
        `SCImgURL`

    - #### setLoadDataOnDemand

          public ColumnTree setLoadDataOnDemand(java.lang.Boolean loadDataOnDemand)
                                         throws java.lang.IllegalStateException

      For databound columnTree instances, should the entire tree of data be loaded on initial fetch, or should each column be loaded as needed. If unset the default ResultTree.loadDataOnDemand setting will be used.
      Parameters:
        `loadDataOnDemand` - New loadDataOnDemand value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Databinding overview and related methods`

    - #### getLoadDataOnDemand

          public java.lang.Boolean getLoadDataOnDemand()

      For databound columnTree instances, should the entire tree of data be loaded on initial fetch, or should each column be loaded as needed. If unset the default ResultTree.loadDataOnDemand setting will be used.
      Returns:
        Current loadDataOnDemand value. Default value is null
      See Also:
        `Databinding overview and related methods`

    - #### setNodeIcon

          public ColumnTree setNodeIcon(java.lang.String nodeIcon)

      The filename of the default icon for all leaf nodes in this grid. To specify a custom image for an individual node, set the `customIconProperty` directly on the node.

      See `TreeGrid.showNodeIcons` and `TreeGrid.showFolderIcons` for details on suppressing display of icons

      Parameters:
        `nodeIcon` - New nodeIcon value. Default value is "[SKIN]file.png"
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        `SCImgURL`, Miller Columns Example

    - #### getNodeIcon

          public java.lang.String getNodeIcon()

      The filename of the default icon for all leaf nodes in this grid. To specify a custom image for an individual node, set the `customIconProperty` directly on the node.

      See `TreeGrid.showNodeIcons` and `TreeGrid.showFolderIcons` for details on suppressing display of icons

      Returns:
        Current nodeIcon value. Default value is "[SKIN]file.png"
      See Also:
        `SCImgURL`, Miller Columns Example

    - #### setOpenIconSuffix

          public ColumnTree setOpenIconSuffix(java.lang.String openIconSuffix)

      If `showOpenIcons` is true, this suffix will be appended to the `folderIcon` for open folders in this grid.
      Parameters:
        `openIconSuffix` - New openIconSuffix value. Default value is "open"
      Returns:
        `ColumnTree` instance, for chaining setter calls

    - #### getOpenIconSuffix

          public java.lang.String getOpenIconSuffix()

      If `showOpenIcons` is true, this suffix will be appended to the `folderIcon` for open folders in this grid.
      Returns:
        Current openIconSuffix value. Default value is "open"

    - #### setShowCustomIconOpen

          public ColumnTree setShowCustomIconOpen(java.lang.Boolean showCustomIconOpen)

      Should folder nodes showing custom icons (set via the `customIconProperty`), show open state images when the folder is opened. If true, the `openIconSuffix` will be appended to the image URL (so `"customFolder.gif"` might be replaced with `"customFolder_open.gif"`).
      Note that the `closedIconSuffix` is never appended to custom folder icons.
      Can be overridden at the node level via the default property `TreeNode.showOpenIcon` and that property can be renamed via `TreeGrid.customIconOpenProperty`.

      Note : This is an advanced setting

      Parameters:
        `showCustomIconOpen` - New showCustomIconOpen value. Default value is false
      Returns:
        `ColumnTree` instance, for chaining setter calls

    - #### getShowCustomIconOpen

          public java.lang.Boolean getShowCustomIconOpen()

      Should folder nodes showing custom icons (set via the `customIconProperty`), show open state images when the folder is opened. If true, the `openIconSuffix` will be appended to the image URL (so `"customFolder.gif"` might be replaced with `"customFolder_open.gif"`).
      Note that the `closedIconSuffix` is never appended to custom folder icons.
      Can be overridden at the node level via the default property `TreeNode.showOpenIcon` and that property can be renamed via `TreeGrid.customIconOpenProperty`.
      Returns:
        Current showCustomIconOpen value. Default value is false

    - #### setShowDetailFields

          public ColumnTree setShowDetailFields(java.lang.Boolean showDetailFields)
                                         throws java.lang.IllegalStateException

      Whether to show fields marked `detail:true` when a DataBoundComponent is given a DataSource but no `component.fields`.

      The `detail` property is used on DataSource fields to mark fields that shouldn't appear by default in a view that tries to show many records in a small space.

      Specified by:
        `setShowDetailFields` in interface `DataBoundComponent`
      Parameters:
        `showDetailFields` - New showDetailFields value. Default value is true
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created
      See Also:
        `Databinding overview and related methods`

    - #### getShowDetailFields

          public java.lang.Boolean getShowDetailFields()

      Whether to show fields marked `detail:true` when a DataBoundComponent is given a DataSource but no `component.fields`.

      The `detail` property is used on DataSource fields to mark fields that shouldn't appear by default in a view that tries to show many records in a small space.

      Specified by:
        `getShowDetailFields` in interface `DataBoundComponent`
      Returns:
        Current showDetailFields value. Default value is true
      See Also:
        `Databinding overview and related methods`

    - #### setShowHeaders

          public ColumnTree setShowHeaders(java.lang.Boolean showHeaders)
                                    throws java.lang.IllegalStateException

      If set, each column in the ColumnTree will show a header with the title of the selected node from the column to the left.
      Parameters:
        `showHeaders` - New showHeaders value. Default value is false
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getShowHeaders

          public java.lang.Boolean getShowHeaders()

      If set, each column in the ColumnTree will show a header with the title of the selected node from the column to the left.
      Returns:
        Current showHeaders value. Default value is false

    - #### setShowMultipleColumns

          public ColumnTree setShowMultipleColumns(java.lang.Boolean showMultipleColumns)

      When set to false, only displays a single column at a time, showing a slide animation when moving between columns.
      Parameters:
        `showMultipleColumns` - New showMultipleColumns value. Default value is null
      Returns:
        `ColumnTree` instance, for chaining setter calls

    - #### getShowMultipleColumns

          public java.lang.Boolean getShowMultipleColumns()

      When set to false, only displays a single column at a time, showing a slide animation when moving between columns.
      Returns:
        Current showMultipleColumns value. Default value is null

    - #### setShowNodeCount

          public ColumnTree setShowNodeCount(java.lang.Boolean showNodeCount)
                                      throws java.lang.IllegalStateException

      If set, and `showHeaders` is also set, each column's header will show a count of the number of nodes in that column
      Parameters:
        `showNodeCount` - New showNodeCount value. Default value is false
      Returns:
        `ColumnTree` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getShowNodeCount

          public java.lang.Boolean getShowNodeCount()

      If set, and `showHeaders` is also set, each column's header will show a count of the number of nodes in that column
      Returns:
        Current showNodeCount value. Default value is false

    - #### setShowOpenIcons

          public ColumnTree setShowOpenIcons(java.lang.Boolean showOpenIcons)

      If true, show a different icon for `open` folders than closed folders. This is achieved by appending the `openIconSuffix` onto the `folderIcon` URL [for example `"[SKIN]/folder.gif"` might be replaced by `"[SKIN]/folder_open.gif"`.
      Note If this property is set to `false` the same icon is shown for open folders as for closed folders, unless a custom folder icon was specified. This will be determined by `folderIcon` plus the `closedIconSuffix`.
      Parameters:
        `showOpenIcons` - New showOpenIcons value. Default value is true
      Returns:
        `ColumnTree` instance, for chaining setter calls
      See Also:
        Miller Columns Example

    - #### getShowOpenIcons

          public java.lang.Boolean getShowOpenIcons()

      If true, show a different icon for `open` folders than closed folders. This is achieved by appending the `openIconSuffix` onto the `folderIcon` URL [for example `"[SKIN]/folder.gif"` might be replaced by `"[SKIN]/folder_open.gif"`.
      Note If this property is set to `false` the same icon is shown for open folders as for closed folders, unless a custom folder icon was specified. This will be determined by `folderIcon` plus the `closedIconSuffix`.
      Returns:
        Current showOpenIcons value. Default value is true
      See Also:
        Miller Columns Example

    - #### folderDrop

          public void folderDrop(TreeNode[] nodes,
                                 TreeNode folder,
                                 int index,
                                 Canvas sourceWidget)

      Process a drop of one or more nodes on a TreeGrid folder. Add logic in your drop handler to perform custom drop behaviors; to suppress the built-in behavior described below, use `event.cancel()`

      The default behavior is to simply delegate to the `transferNodes()` method; thus, the correct way to perform a programmatic folder drop, with all the built-in behaviors described below, is to call `transferNodes()`

      If this is a self-drop, nodes are simply reordered. An "update" operation will be submitted to update the `parentId` field of the moved node(s).

      For a drop from another widget, `TreeGrid.transferDragData()` is called which, depending on the `dragDataAction` specified on the source widget, may either remove the source nodes from the original list (`dragDataAction:"move"`) or just provide a copy to this tree (`dragDataAction:"copy"`).

      In either case the new row(s) appear in the `folder` at the `index` specified by the arguments of the same name.

      If this grid is databound, the new nodes will be added to the dataset by calling `DataSource.addData()`. Further, if the new nodes were dragged from another databound component, and `addDropValues` is true, `getDropValues` will be called for every item being dropped.

      As a special case, if the `sourceWidget` is also databound and a `foreignKey` relationship is declared from the `sourceWidget`'s DataSource to this TreeGrid's DataSource, the interaction will be treated as a "drag recategorization" use case such as files being placed in folders, employees being assigned to teams, etc. "update" DSRequests will be submitted that change the foreignKey field in the dropped records to point to the tree folder that was the target of the drop. In this case no change will be made to the Tree data as such, only to the dropped records.

      For multi-record drops, Queuing is automatically used to combine all DSRequests into a single HTTP Request (see QuickStart Guide, Server Framework chapter). This allows the server to persist all changes caused by the drop in a single transaction (and this is automatically done when using the built-in server DataSources with Power Edition and above).

      If these default persistence behaviors are undesirable, use `event.cancel()`, then implement your own behavior, typically by using grid.updateData() or addData() to add new records.

      NOTE: the records you receive in this event are the actual Records from the source component. Use `DataSource.copyRecords()` to create a copy before modifying the records or using them with updateData() or addData().

      Parameters:
        `nodes` - List of nodes being dropped
        `folder` - The folder being dropped on
        `index` - Within the folder being dropped on, the index at which the drop is occurring. Only passed if `canReorderRecords` is true.
        `sourceWidget` - The component that is the source of the nodes (where the nodes were dragged from)
      See Also:
        `transferNodes(com.smartgwt.client.widgets.tree.TreeNode[], com.smartgwt.client.widgets.tree.TreeNode, java.lang.Integer, com.smartgwt.client.widgets.Canvas)`, `Dragdrop overview and related methods`, Drop Events Example

    - #### getColumnTitle

          public void getColumnTitle(TreeNode node,
                                     int colNum)

      Returns the title to show for the header of indicated column. Only called if `shouldShowHeader()` returns true for this column.

      By default, returns `firstColumnTitle` for the first column, and for subsequent columns, the result of `this.data.getTitle()` called on the `node` passed to this function.

      Parameters:
        `node` - parent node for the nodes to be shown in the column
        `colNum` - index of the column

    - #### getRecord

          public TreeNode getRecord(int index)

      Retrieve a record by index.

      If `colNum` is passed, returns the record found in that column at that index, or null if the column doesn't exist or the index is too high.

      With no `colNum` parameter, a record's index is it's position counting from the first record of the first column and including all records in each column. Note that both index and colNum are zero-based - so the first column is column 0, not column 1.

      Parameters:
        `index` - index of record to return.
      Returns:
        node at the specified index

    - #### getRecord

          public TreeNode getRecord(int index,
                                    java.lang.Integer colNum)

      Retrieve a record by index.

      If `colNum` is passed, returns the record found in that column at that index, or null if the column doesn't exist or the index is too high.

      With no `colNum` parameter, a record's index is it's position counting from the first record of the first column and including all records in each column. Note that both index and colNum are zero-based - so the first column is column 0, not column 1.

      Parameters:
        `index` - index of record to return.
        `colNum` - optional index of the column
      Returns:
        node at the specified index

    - #### getSelectedRecord

          public Record getSelectedRecord()

      Get the selected record, that is, the parent of the nodes in the rightmost visible column.

      This is generally the most recently clicked node unless programmatic navigation has taken place.

      If only the first column is showing, the root node is returned (which can be detected via `Tree.isRoot()`).

      Returns:
        the selected record

    - #### navigateBack

          public void navigateBack()

      Navigate to the previous column.

    - #### shouldShowHeader

          public void shouldShowHeader(TreeNode node,
                                       int colNum)

      Whether the indicated column should show a header. Returns this.showHeaders by default, override for different behavior.
      Parameters:
        `node` - parent node for the nodes to be shown in the column
        `colNum` - index of the column

    - #### transferNodes

          public void transferNodes(TreeNode[] nodes,
                                    TreeNode folder,
                                    java.lang.Integer index,
                                    Canvas sourceWidget)

      Transfer a list of `TreeNode`s within this treeGrid or from from some other component (does not have to be a databound component) into this component. This method is only applicable to list-type components, such as `listGrid`, `treeGrid` or `tileGrid`. Please see the paragraph below for special rules concerning `multi-link trees`.

      This method implements the automatic drag-copy and drag-move behavior and calling it is equivalent to completing a drag and drop of the `nodes` (the default `folderDrop()` implementation simply calls `transferNodes()`)

      Note that this method is asynchronous - it may need to perform server turnarounds to prevent duplicates in the target component's data. If you wish to be notified when the transfer process has completed, you can either pass the optional callback to this method or implement the `DataBoundComponent.dropComplete()` method on this component.

      For a TreeGrid, see also `transferSelectedData()`.

      Multi-link trees
      If both the target treeGrid and the `sourceWidget` for this transfer are multi-link treeGrids, the `nodes` parameter must be an array of `NodeLocator`s rather than TreeNodes. Likewise, if the target (this) component is a multi-link treeGrid, the `folder` parameter must be a NodeLocator.

      You can obtain a NodeLocator for a visible node occurence in a multi-link TreeGrid by calling its data model's `getNodeLocator()` method.

      Parameters:
        `nodes` - Nodes to transfer to this component
        `folder` - The target folder (eg, of a drop interaction), for context
        `index` - Insert point within the target folder data for the transferred nodes
        `sourceWidget` - The databound or non-databound component from which the nodes are to be transferred.
      See Also:
        `Dragdrop overview and related methods`, Drop Events Example

    - #### transferNodes

          public void transferNodes(TreeNode[] nodes,
                                    TreeNode folder,
                                    java.lang.Integer index,
                                    Canvas sourceWidget,
                                    java.lang.String callback)

      Transfer a list of `TreeNode`s within this treeGrid or from from some other component (does not have to be a databound component) into this component. This method is only applicable to list-type components, such as `listGrid`, `treeGrid` or `tileGrid`. Please see the paragraph below for special rules concerning `multi-link trees`.

      This method implements the automatic drag-copy and drag-move behavior and calling it is equivalent to completing a drag and drop of the `nodes` (the default `folderDrop()` implementation simply calls `transferNodes()`)

      Note that this method is asynchronous - it may need to perform server turnarounds to prevent duplicates in the target component's data. If you wish to be notified when the transfer process has completed, you can either pass the optional callback to this method or implement the `DataBoundComponent.dropComplete()` method on this component.

      For a TreeGrid, see also `transferSelectedData()`.

      Multi-link trees
      If both the target treeGrid and the `sourceWidget` for this transfer are multi-link treeGrids, the `nodes` parameter must be an array of `NodeLocator`s rather than TreeNodes. Likewise, if the target (this) component is a multi-link treeGrid, the `folder` parameter must be a NodeLocator.

      You can obtain a NodeLocator for a visible node occurence in a multi-link TreeGrid by calling its data model's `getNodeLocator()` method.

      Parameters:
        `nodes` - Nodes to transfer to this component
        `folder` - The target folder (eg, of a drop interaction), for context
        `index` - Insert point within the target folder data for the transferred nodes
        `sourceWidget` - The databound or non-databound component from which the nodes are to be transferred.
        `callback` - optional callback to be fired when the transfer process has completed. The callback will be passed a single parameter "records", the list of nodes actually transferred to this component (it is called "records" because this is logic shared with `ListGrid`). See `Callback`
      See Also:
        `Dragdrop overview and related methods`, Drop Events Example

    - #### setDefaultProperties

          public static void setDefaultProperties(ColumnTree columnTreeProperties)

      Class level method to set the default properties of this class. If set, then all existing and subsequently created instances of this class will automatically have default properties corresponding to the properties set on the SmartGWT class instance passed to this function before its underlying SmartClient JS object was created. This is a powerful feature that eliminates the need for users to create a separate hierarchy of subclasses that only alter the default properties of this class. Can also be used for skinning / styling purposes.

      Note: This method is intended for setting default attributes only and will affect all instances of the underlying class (including those automatically generated in JavaScript). This method should not be used to apply standard EventHandlers or override methods for a class - use a custom subclass instead. Calling this method after instances have been created can result in undefined behavior, since it bypasses any setters and a class instance may have already examined a particular property and not be expecting any changes through this route.

      Parameters:
        `columnTreeProperties` - properties that should be used as new defaults when instances of this class are created
      See Also:
        `SGWTProperties`

    - #### onInit

          protected void onInit()

      Overrides:
        `onInit` in class `Layout`

    - #### onInit_ColumnTree

          protected void onInit_ColumnTree()

    - #### setDropIconSuffix

          public void setDropIconSuffix(java.lang.String dropIconSuffix)

      If `showDropIcons` is true, this suffix will be appended to the `folderIcon` when the user drop-hovers over some folder.
      Parameters:
        `dropIconSuffix` - dropIconSuffix Default value is "drop"

    - #### getDropIconSuffix

          public java.lang.String getDropIconSuffix()

      If `showDropIcons` is true, this suffix will be appended to the `folderIcon` when the user drop-hovers over some folder.
      Returns:
        String

    - #### setShowDropIcons

          public void setShowDropIcons(java.lang.Boolean showDropIcons)

      If true, when the user drags a droppable target over a folder in this TreeGrid, show a different icon folder icon. This is achieved by appending the `dropIconSuffix` onto the `folderIcon` URL (for example `"[SKIN]/folder.gif"` may be replaced by `"[SKIN]/folder_drop.gif"`).
      Parameters:
        `showDropIcons` - showDropIcons Default value is true

    - #### getShowDropIcons

          public java.lang.Boolean getShowDropIcons()

      If true, when the user drags a droppable target over a folder in this TreeGrid, show a different icon folder icon. This is achieved by appending the `dropIconSuffix` onto the `folderIcon` URL (for example `"[SKIN]/folder.gif"` may be replaced by `"[SKIN]/folder_drop.gif"`).
      Returns:
        Boolean

    - #### deselectRecord

          public void deselectRecord(Record record,
                                     int colNum)

    - #### deselectRecord

          public void deselectRecord(int record,
                                     int colNum)

      Deselect a `Record` passed in explicitly, or by index.

      Synonym for `selectRecord(record, false)`

      Parameters:
        `record` - row number to deselect
        `colNum` - the column number

    - #### deselectRecords

          public void deselectRecords(int[] records,
                                      int colNum)

      Deselect a list of `Record`s passed in explicitly, or by index.

      Synonym for `selectRecords(records, false)`

      Parameters:
        `records` - records (or row numbers) to deselect
        `colNum` - the col num

    - #### deselectRecord

          public void deselectRecord(Record[] records)

      Deselect a list of `Record`s passed in explicitly, or by index.

      Synonym for `selectRecords(records, false)`

      Parameters:
        `records` - records (or row numbers) to deselect

    - #### deselectRecords

          public void deselectRecords(Record[] records,
                                      int colNum)

      Deselect a list of `Record`s passed in explicitly, or by index.

      Synonym for `selectRecords(records, false)`

      Parameters:
        `records` - records (or row numbers) to deselect
        `colNum` - the col num

    - #### selectRecord

          public void selectRecord(int record,
                                   boolean newState,
                                   int colNum)

      Select/deselect a `Record` passed in explicitly, or by index.
      Parameters:
        `record` - record (or row number) to select
        `newState` - new selection state (if null, defaults to true)
        `colNum` - Column number

    - #### selectRecord

          public void selectRecord(Record record,
                                   boolean newState,
                                   int colNum)

      Select/deselect a `Record` passed in explicitly, or by index.
      Parameters:
        `record` - record (or row number) to select
        `newState` - new selection state (if null, defaults to true)
        `colNum` - Column number

    - #### selectRecords

          public void selectRecords(int[] records,
                                    boolean newState,
                                    int colNum)

      Select/deselect a list of `Record`s passed in explicitly, or by index.
      Parameters:
        `records` - records (or row numbers) to select
        `newState` - new selection state (if null, defaults to true)
        `colNum` - Column number

    - #### selectRecords

          public void selectRecords(Record[] records,
                                    boolean newState,
                                    int colNum)

      Select/deselect a list of `Record`s passed in explicitly, or by index.
      Parameters:
        `records` - records (or row numbers) to select
        `newState` - new selection state (if null, defaults to true)
        `colNum` - Column number

    - #### getSelection

          public ListGridRecord[] getSelection(int colNum)

      Returns the array of objects selected in the specified column of the columnTree
      Parameters:
        `colNum` - Column within the columnTree to return the selection for
      Returns:
        (ArrayofListGridRecord) list of records, empty list if nothing selected

    - #### selectAllRecords

          public void selectAllRecords(int colNum)

      Select all records in the supplied column (the first column if none is passed)
      Parameters:
        `colNum` - Column number

    - #### deselectAllRecords

          public void deselectAllRecords(int colNum)

      Deselect all records in the supplied column (the first column if none is passed)
      Parameters:
        `colNum` - Column number

    - #### anySelected

          public java.lang.Boolean anySelected(int colNum)

      Whether at least one item is selected in the supplied column (the first column if none is passed)
      Parameters:
        `colNum` - Column number
      Returns:
        true == at least one item is selected in the supplied column, false == nothing at all is selected in the supplied column (note that there may be selections in other columns in this columnTree)

    - #### addNodeSelectedHandler

          public com.google.gwt.event.shared.HandlerRegistration addNodeSelectedHandler(NodeSelectedHandler handler)

      Add a onNodeSelected handler.

      Notification method fired when a node is selected. Return false to suppress default behavior.
      Specified by:
        `addNodeSelectedHandler` in interface `HasNodeSelectedHandlers`
      Parameters:
        `handler` - the onNodeSelected handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### setColumnProperties

          public void setColumnProperties(ListGrid columnProperties)
                                   throws java.lang.IllegalStateException

      Standard set of properties to apply to each generated `column` in this columnTree. Developers may also override `ColumnTree.getCustomColumnProperties` to return dynamic properties based on the node being displayed.

      Note : This is an advanced setting

      Parameters:
        `columnProperties` - columnProperties Default value is null
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getColumnProperties

          public ListGrid getColumnProperties()

      Standard set of properties to apply to each generated `column` in this columnTree. Developers may also override `ColumnTree.getColumnProperties` to return dynamic properties based on the node being displayed.
      Returns:
        "template" listGrid with attributes that will be applied to each generated column

    - #### getCustomColumnProperties

          public ListGrid getCustomColumnProperties(TreeNode node,
                                                    int colNum)

      Additional properties to apply to the ListGrid that will show the indicated column. Returns null by default. This method can be overridden to allow, for example, different styling, icons or row heights per column.
      Parameters:
        `node` - parent node for the nodes to be shown in the column
        `colNum` - index of the column
      Returns:
        "template" listgrid with dynamically determined attributes to apply to the generated column.

    - #### setDataSource

          public void setDataSource(DataSource dataSource,
                                    ListGridField... fields)

      Bind to a DataSource.

      Binding to a DataSource means that the component will use the DataSource to provide default data for its fields.

      When binding to a new DataSource, if the component has any existing "fields" or has a dataset, these will be discarded by default, since it is assumed the new DataSource may represent a completely unrelated set of objects. If the old "fields" are still relevant, pass them to setDataSource().

      Parameters:
        `dataSource` -
        `fields` -

    - #### setDataProperties

          public void setDataProperties(Tree resultTreeProperties)

      For databound ColumnTrees, this attribute can be used to customize the ResultTree object created for this ColumnTree when data is fetched.
      Parameters:
        `resultTreeProperties` - the data properties

    - #### setDataPageSize

          public ColumnTree setDataPageSize(int dataPageSize)

      Description copied from interface: `DataBoundComponent`
      When using `data paging`, how many records to fetch at a time. If set to a positive integer, `dataPageSize` will override the default `resultSize` for ResultSets automatically created when you call `fetchData()` (and similarly for the `resultSize` of ResultTrees). The default of 0 means to just use the default page size of the data container.

      Note that regardless of the `dataPageSize` setting, a component will always fetch all of data that it needs to draw. Settings such as `showAllRecords:true`, `drawAllMaxCells` and `drawAheadRatio` can cause more rows than the configured `dataPageSize` to be fetched.

      Specified by:
        `setDataPageSize` in interface `DataBoundComponent`
      Parameters:
        `dataPageSize` - dataPageSize Default value is 0
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      See Also:
        `Databinding overview and related methods`

    - #### getDataPageSize

          public int getDataPageSize()

      Description copied from interface: `DataBoundComponent`
      When using `data paging`, how many records to fetch at a time. If set to a positive integer, `dataPageSize` will override the default `resultSize` for ResultSets automatically created when you call `fetchData()` (and similarly for the `resultSize` of ResultTrees). The default of 0 means to just use the default page size of the data container.

      Note that regardless of the `dataPageSize` setting, a component will always fetch all of data that it needs to draw. Settings such as `showAllRecords:true`, `drawAllMaxCells` and `drawAheadRatio` can cause more rows than the configured `dataPageSize` to be fetched.

      Specified by:
        `getDataPageSize` in interface `DataBoundComponent`
      Returns:
        int
      See Also:
        `Databinding overview and related methods`

    - #### setUseAllDataSourceFields

          public ColumnTree setUseAllDataSourceFields(java.lang.Boolean useAllDataSourceFields)

      Description copied from interface: `DataBoundComponent`
      If true, the set of fields given by the "default binding" (see `fields`) is used, with any fields specified in `component.fields` acting as overrides that can suppress or modify the display of individual fields, without having to list the entire set of fields that should be shown.

      If `component.fields` contains fields that are not found in the DataSource, they will be shown after the most recently referred to DataSource field. If the new fields appear first, they will be shown first.

      Specified by:
        `setUseAllDataSourceFields` in interface `DataBoundComponent`
      Parameters:
        `useAllDataSourceFields` - useAllDataSourceFields Default value is false
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getUseAllDataSourceFields

          public java.lang.Boolean getUseAllDataSourceFields()

      Description copied from interface: `DataBoundComponent`
      If true, the set of fields given by the "default binding" (see `fields`) is used, with any fields specified in `component.fields` acting as overrides that can suppress or modify the display of individual fields, without having to list the entire set of fields that should be shown.

      If `component.fields` contains fields that are not found in the DataSource, they will be shown after the most recently referred to DataSource field. If the new fields appear first, they will be shown first.

      Specified by:
        `getUseAllDataSourceFields` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setShowHiddenFields

          public ColumnTree setShowHiddenFields(java.lang.Boolean showHiddenFields)

      Description copied from interface: `DataBoundComponent`
      Whether to show fields marked `hidden:true` when a DataBoundComponent is given a DataSource but no `component.fields`.

      The `hidden` property is used on DataSource fields to mark fields that are never of meaning to an end user.

      Specified by:
        `setShowHiddenFields` in interface `DataBoundComponent`
      Parameters:
        `showHiddenFields` - showHiddenFields Default value is false
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getShowHiddenFields

          public java.lang.Boolean getShowHiddenFields()

      Description copied from interface: `DataBoundComponent`
      Whether to show fields marked `hidden:true` when a DataBoundComponent is given a DataSource but no `component.fields`.

      The `hidden` property is used on DataSource fields to mark fields that are never of meaning to an end user.

      Specified by:
        `getShowHiddenFields` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setShowComplexFields

          public ColumnTree setShowComplexFields(java.lang.Boolean showComplexFields)

      Description copied from interface: `DataBoundComponent`
      Whether to show fields of non-atomic types when a DataBoundComponent is given a DataSource but no `component.fields`.

      If true, the component will show fields that declare a complex type, for example, a field 'shippingAddress' that declares type 'Address', where 'Address' is the ID of a DataSource that declares the fields of a shipping address (city, street name, etc).

      Such fields may need custom formatters or editors in order to create a usable interface, for example, an Address field in a ListGrid might use a custom formatter to combine the relevant fields of an address into one column, and might use a pop-up dialog for editing.

      Note : This is an advanced setting

      Specified by:
        `setShowComplexFields` in interface `DataBoundComponent`
      Parameters:
        `showComplexFields` - showComplexFields Default value is true
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getShowComplexFields

          public java.lang.Boolean getShowComplexFields()

      Description copied from interface: `DataBoundComponent`
      Whether to show fields of non-atomic types when a DataBoundComponent is given a DataSource but no `component.fields`.

      If true, the component will show fields that declare a complex type, for example, a field 'shippingAddress' that declares type 'Address', where 'Address' is the ID of a DataSource that declares the fields of a shipping address (city, street name, etc).

      Such fields may need custom formatters or editors in order to create a usable interface, for example, an Address field in a ListGrid might use a custom formatter to combine the relevant fields of an address into one column, and might use a pop-up dialog for editing.

      Specified by:
        `getShowComplexFields` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setFetchOperation

          public ColumnTree setFetchOperation(java.lang.String fetchOperation)

      Description copied from interface: `DataBoundComponent`
      Operation ID this component should use when performing fetch operations.
      Specified by:
        `setFetchOperation` in interface `DataBoundComponent`
      Parameters:
        `fetchOperation` - fetchOperation Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getFetchOperation

          public java.lang.String getFetchOperation()

      Description copied from interface: `DataBoundComponent`
      Operation ID this component should use when performing fetch operations.
      Specified by:
        `getFetchOperation` in interface `DataBoundComponent`
      Returns:
        String

    - #### setUpdateOperation

          public ColumnTree setUpdateOperation(java.lang.String updateOperation)

      Description copied from interface: `DataBoundComponent`
      `operationId` this component should use when performing update operations.
      Specified by:
        `setUpdateOperation` in interface `DataBoundComponent`
      Parameters:
        `updateOperation` - Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      See Also:
        `Operations overview and related methods`

    - #### getUpdateOperation

          public java.lang.String getUpdateOperation()

      Description copied from interface: `DataBoundComponent`
      `operationId` this component should use when performing update operations.
      Specified by:
        `getUpdateOperation` in interface `DataBoundComponent`
      Returns:
        String
      See Also:
        `Operations overview and related methods`

    - #### setAddOperation

          public ColumnTree setAddOperation(java.lang.String addOperation)

      Description copied from interface: `DataBoundComponent`
      `operationId` this component should use when performing add operations.
      Specified by:
        `setAddOperation` in interface `DataBoundComponent`
      Parameters:
        `addOperation` - Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      See Also:
        `Operations overview and related methods`

    - #### getAddOperation

          public java.lang.String getAddOperation()

      Description copied from interface: `DataBoundComponent`
      `operationId` this component should use when performing add operations.
      Specified by:
        `getAddOperation` in interface `DataBoundComponent`
      Returns:
        String
      See Also:
        `Operations overview and related methods`

    - #### setRemoveOperation

          public ColumnTree setRemoveOperation(java.lang.String removeOperation)

      Description copied from interface: `DataBoundComponent`
      `operationId` this component should use when performing remove operations.
      Specified by:
        `setRemoveOperation` in interface `DataBoundComponent`
      Parameters:
        `removeOperation` - Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      See Also:
        `Operations overview and related methods`

    - #### getRemoveOperation

          public java.lang.String getRemoveOperation()

      Description copied from interface: `DataBoundComponent`
      `operationId` this component should use when performing remove operations.
      Specified by:
        `getRemoveOperation` in interface `DataBoundComponent`
      Returns:
        String
      See Also:
        `Operations overview and related methods`

    - #### setExportFields

          public ColumnTree setExportFields(java.lang.String[] exportFields)

      Description copied from interface: `DataBoundComponent`
      The list of field-names to export. If provided, the field-list in the exported output is limited and sorted as per the list.

      If exportFields is not provided, the exported output includes all visible fields from this component, sorted as they appear.

      Specified by:
        `setExportFields` in interface `DataBoundComponent`
      Parameters:
        `exportFields` - exportFields Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getExportFields

          public java.lang.String[] getExportFields()

      Description copied from interface: `DataBoundComponent`
      The list of field-names to export. If provided, the field-list in the exported output is limited and sorted as per the list.

      If exportFields is not provided, the exported output includes all visible fields from this component, sorted as they appear.

      Specified by:
        `getExportFields` in interface `DataBoundComponent`
      Returns:
        the list of field-names to export.

    - #### setExportAll

          public ColumnTree setExportAll(java.lang.Boolean exportAll)

      Description copied from interface: `DataBoundComponent`
      Setting exportAll to true prevents the component from passing its list of fields to the export call. The result is the export of all visible fields from `fields`.

      If exportAll is false, an export operation will first consider `exportFields`, if it's set, and fall back on all visible fields from `fields` otherwise.

      Specified by:
        `setExportAll` in interface `DataBoundComponent`
      Parameters:
        `exportAll` - exportAll Default value is false
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getExportAll

          public java.lang.Boolean getExportAll()

      Description copied from interface: `DataBoundComponent`
      Setting exportAll to true prevents the component from passing its list of fields to the export call. The result is the export of all visible fields from `fields`.

      If exportAll is false, an export operation will first consider `exportFields`, if it's set, and fall back on all visible fields from `fields` otherwise.

      Specified by:
        `getExportAll` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setExportIncludeSummaries

          public ColumnTree setExportIncludeSummaries(java.lang.Boolean exportIncludeSummaries)

      Description copied from interface: `DataBoundComponent`
      If Summary rows exist for this component, whether to include them when exporting client data. Defaults to true if not set
      Specified by:
        `setExportIncludeSummaries` in interface `DataBoundComponent`
      Parameters:
        `exportIncludeSummaries` - exportIncludeSummaries Default value is true
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getExportIncludeSummaries

          public java.lang.Boolean getExportIncludeSummaries()

      Description copied from interface: `DataBoundComponent`
      If Summary rows exist for this component, whether to include them when exporting client data. Defaults to true if not set
      Specified by:
        `getExportIncludeSummaries` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setPreventDuplicates

          public ColumnTree setPreventDuplicates(java.lang.Boolean preventDuplicates)
                                          throws java.lang.IllegalStateException

      Description copied from interface: `DataBoundComponent`
      If set, detect and prevent duplicate records from being transferred to this component, either via drag and drop or via `DataBoundComponent.transferSelectedData(com.smartgwt.client.widgets.DataBoundComponent)`. When a duplicate transfer is detected, a dialog will appear showing the `duplicateDragMessage`.

      If the component either does not have a `DataSource` or has a DataSource with no `primaryKey` declared, duplicate checking is off by default. If duplicate checking is enabled, it looks for an existing record in the dataset that has all of the properties of the dragged record, and considers that a duplicate.

      For `DragDataAction`:"copy" where the target DataSource is related to the source DataSource by foreignKey, a duplicate means that the target list, as filtered by the current criteria, already has a record whose value for the foreignKey field matches the primaryKey of the record being transferred.

      For example, consider dragging "employees" to "teams", where "teams" has a field "teams.employeeId" which is a foreignKey pointing to "employees.id", and the target grid has search criteria causing it to show all the members of one team. A duplicate - adding an employee to the same team twice - is when the target grid's dataset contains an record with "employeeId" matching the "id" field of the dropped employee.

      Specified by:
        `setPreventDuplicates` in interface `DataBoundComponent`
      Parameters:
        `preventDuplicates` - preventDuplicates Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getPreventDuplicates

          public java.lang.Boolean getPreventDuplicates()

      Description copied from interface: `DataBoundComponent`
      If set, detect and prevent duplicate records from being transferred to this component, either via drag and drop or via `DataBoundComponent.transferSelectedData(com.smartgwt.client.widgets.DataBoundComponent)`. When a duplicate transfer is detected, a dialog will appear showing the `duplicateDragMessage`.

      If the component either does not have a `DataSource` or has a DataSource with no `primaryKey` declared, duplicate checking is off by default. If duplicate checking is enabled, it looks for an existing record in the dataset that has all of the properties of the dragged record, and considers that a duplicate.

      For `DragDataAction`:"copy" where the target DataSource is related to the source DataSource by foreignKey, a duplicate means that the target list, as filtered by the current criteria, already has a record whose value for the foreignKey field matches the primaryKey of the record being transferred.

      For example, consider dragging "employees" to "teams", where "teams" has a field "teams.employeeId" which is a foreignKey pointing to "employees.id", and the target grid has search criteria causing it to show all the members of one team. A duplicate - adding an employee to the same team twice - is when the target grid's dataset contains an record with "employeeId" matching the "id" field of the dropped employee.

      Specified by:
        `getPreventDuplicates` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setDuplicateDragMessage

          public ColumnTree setDuplicateDragMessage(java.lang.String duplicateDragMessage)
                                             throws java.lang.IllegalStateException

      Description copied from interface: `DataBoundComponent`
      Message to show when a user attempts to transfer duplicate records into this component, and `preventDuplicates` is enabled. If set to null, duplicates will not be reported and the dragged duplicates will not be saved.
      Specified by:
        `setDuplicateDragMessage` in interface `DataBoundComponent`
      Parameters:
        `duplicateDragMessage` - duplicateDragMessage Default value is "Duplicates not allowed"
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getDuplicateDragMessage

          public java.lang.String getDuplicateDragMessage()

      Description copied from interface: `DataBoundComponent`
      Message to show when a user attempts to transfer duplicate records into this component, and `preventDuplicates` is enabled. If set to null, duplicates will not be reported and the dragged duplicates will not be saved.
      Specified by:
        `getDuplicateDragMessage` in interface `DataBoundComponent`
      Returns:
        String

    - #### setAddDropValues

          public ColumnTree setAddDropValues(java.lang.Boolean addDropValues)

      Description copied from interface: `DataBoundComponent`
      Indicates whether to add "drop values" to items dropped on this component, if both the source and target widgets are databound, either to the same DataSource or to different DataSources that are related via a foreign key. "Drop values" are properties of the dropped item that you wish to change (and persist) as a result of the item being dropped on this grid.

      If this value is true and this component is databound, `DataBoundComponent.getDropValues()` will be called for every databound item dropped on this grid, and an update performed on the item

      Specified by:
        `setAddDropValues` in interface `DataBoundComponent`
      Parameters:
        `addDropValues` - addDropValues Default value is true
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getAddDropValues

          public java.lang.Boolean getAddDropValues()

      Description copied from interface: `DataBoundComponent`
      Indicates whether to add "drop values" to items dropped on this component, if both the source and target widgets are databound, either to the same DataSource or to different DataSources that are related via a foreign key. "Drop values" are properties of the dropped item that you wish to change (and persist) as a result of the item being dropped on this grid.

      If this value is true and this component is databound, `DataBoundComponent.getDropValues()` will be called for every databound item dropped on this grid, and an update performed on the item

      Specified by:
        `getAddDropValues` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setDropValues

          public ColumnTree setDropValues(java.util.Map dropValues)

      Description copied from interface: `DataBoundComponent`
      When an item is dropped on this component, and `addDropValues` is true and both the source and target widgets are databound, either to the same DataSource or to different DataSources that are related via a foreign key, this object provides the "drop values" that Smart GWT will apply to the dropped object before updating it.

      If this property is not defined, Smart GWT defaults to returning the selection criteria currently in place for this component. Thus, any databound items (for example, rows from other grids bound to the same DataSource) dropped on the grid will, by default, be subjected to an update that makes them conform to the grid's current filter criteria.

      Note : This is an advanced setting

      Specified by:
        `setDropValues` in interface `DataBoundComponent`
      Parameters:
        `dropValues` - dropValues Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getDropValues

          public java.util.Map getDropValues()

      Description copied from interface: `DataBoundComponent`
      When an item is dropped on this component, and `addDropValues` is true and both the source and target widgets are databound, either to the same DataSource or to different DataSources that are related via a foreign key, this object provides the "drop values" that Smart GWT will apply to the dropped object before updating it.

      If this property is not defined, Smart GWT defaults to returning the selection criteria currently in place for this component. Thus, any databound items (for example, rows from other grids bound to the same DataSource) dropped on the grid will, by default, be subjected to an update that makes them conform to the grid's current filter criteria.

      Note : This is an advanced setting

      Specified by:
        `getDropValues` in interface `DataBoundComponent`
      Returns:
        Returns the "drop values" to apply to a record dropped on this component prior to update. Only applicable to databound components - see `dropValues` for more details. If multiple records are being dropped, this method is called for each of them in turn.

        This method returns the following:

        - Nothing, if `addDropValues` is false
        - dropValues, if that property is set. If the component's criteria object is applicable (as explained in the next item), it is merged into dropValues, with properties in dropValues taking precedence.
        - The component's criteria object, if the most recent textMatchStyle for the component was "exact" and it is simple criteria (ie, not an AdvancedCriteria object)
        - Otherwise nothing

        You can override this method if you need more complex setting of drop values than can be provided by simply supplying a dropValues object.

    - #### setProgressiveLoading

          public ColumnTree setProgressiveLoading(java.lang.Boolean progressiveLoading)

      Indicates whether or not this component will load its data `progressively`
      Parameters:
        `progressiveLoading` -
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      See Also:
        `ProgressiveLoading`, `DataSource.setProgressiveLoading(java.lang.Boolean)`

    - #### getProgressiveLoading

          public java.lang.Boolean getProgressiveLoading()

      Indicates whether or not this component will load its data `progressively`
      Returns:
      See Also:
        `ProgressiveLoading`, `DataSource.getProgressiveLoading()`

    - #### setUseFlatFields

          public ColumnTree setUseFlatFields(java.lang.Boolean useFlatFields)
                                      throws java.lang.IllegalStateException

      Description copied from interface: `DataBoundComponent`
      The `useFlatFields` flag causes all simple type fields anywhere in a nested set of DataSources to be exposed as a flat list for form binding.

      `useFlatFields` is typically used with imported metadata, such as `XMLTools.loadXMLSchema(java.lang.String, com.smartgwt.client.data.XSDLoadCallback)` from a `XMLTools.loadWSDL(java.lang.String, com.smartgwt.client.data.WSDLLoadCallback)`, as a means of eliminating levels of XML nesting that aren't meaningful in a user interface, without the cumbersome and fragile process of mapping form fields to XML structures.

      For example, having called `WebService.getInputDS(java.lang.String)` to retrieve the input message schema for a web service operation whose input message looks like this:

           <FindServices>
               <searchFor>search text</searchFor>
               <Options>
                   <caseSensitive>false</caseSensitive>
               </Options>
               <IncludeInSearch>
                   <serviceName>true</serviceName>
                   <documentation>true</documentation>
                   <keywords>true</keywords>
               </IncludeInSearch>
           </FindServices>

      Setting `useFlatFields` on a `DynamicForm` that is bound to this input message schema would result in 5 `FormItem` reflecting the 5 simple type fields in the message.

      For this form, the result of `DynamicForm.getValues()` might look like:

          {
              searchFor: "search text",
              caseSensitive: false,
              serviceName: true,
              documentation : true,
              keywords : true
           }

      When contacting a `WebService`, these values can be automatically mapped to the structure of the input message for a web service operation by setting `useFlatFields` (for use with `WebService.callOperation(java.lang.String, java.util.Map, java.lang.String, com.smartgwt.client.data.WebServiceCallback)`) or by setting `useFlatFields` (for use with a `DataSource` that is `'bound to a WSDL web service'` via `wsOperation`).

      Using these two facilities in conjunction (component.useFlatFields and request.useFlatFields) allows gratuitous nesting to be consistently bypassed in both the user presentation and when providing the data for XML messages.

      You can also set `useFlatFields` to automatically enable "flattened" XML serialization (request.useFlatFields) for all DataSource requests of a particular operationType.

      Note that `useFlatFields` is not generally recommended for use with structures where multiple simple type fields exist with the same name, however if used with such a structure, the first field to use a given name wins. "first" means the first field encountered in a depth first search. "wins" means only the first field will be present as a field when data binding.

      Specified by:
        `setUseFlatFields` in interface `DataBoundComponent`
      Parameters:
        `useFlatFields` - useFlatFields Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getUseFlatFields

          public java.lang.Boolean getUseFlatFields()

      Description copied from interface: `DataBoundComponent`
      The `useFlatFields` flag causes all simple type fields anywhere in a nested set of DataSources to be exposed as a flat list for form binding.

      `useFlatFields` is typically used with imported metadata, such as `XMLTools.loadXMLSchema(java.lang.String, com.smartgwt.client.data.XSDLoadCallback)` from a `XMLTools.loadWSDL(java.lang.String, com.smartgwt.client.data.WSDLLoadCallback)`, as a means of eliminating levels of XML nesting that aren't meaningful in a user interface, without the cumbersome and fragile process of mapping form fields to XML structures.

      For example, having called `WebService.getInputDS(java.lang.String)` to retrieve the input message schema for a web service operation whose input message looks like this:

           <FindServices>
               <searchFor>search text</searchFor>
               <Options>
                   <caseSensitive>false</caseSensitive>
               </Options>
               <IncludeInSearch>
                   <serviceName>true</serviceName>
                   <documentation>true</documentation>
                   <keywords>true</keywords>
               </IncludeInSearch>
           </FindServices>

      Setting `useFlatFields` on a `DynamicForm` that is bound to this input message schema would result in 5 `FormItem` reflecting the 5 simple type fields in the message.

      For this form, the result of `DynamicForm.getValues()` might look like:

          {
              searchFor: "search text",
              caseSensitive: false,
              serviceName: true,
              documentation : true,
              keywords : true
           }

      When contacting a `WebService`, these values can be automatically mapped to the structure of the input message for a web service operation by setting `useFlatFields` (for use with `WebService.callOperation(java.lang.String, java.util.Map, java.lang.String, com.smartgwt.client.data.WebServiceCallback)`) or by setting `useFlatFields` (for use with a `DataSource` that is `'bound to a WSDL web service'` via `wsOperation`).

      Using these two facilities in conjunction (component.useFlatFields and request.useFlatFields) allows gratuitous nesting to be consistently bypassed in both the user presentation and when providing the data for XML messages.

      You can also set `useFlatFields` to automatically enable "flattened" XML serialization (request.useFlatFields) for all DataSource requests of a particular operationType.

      Note that `useFlatFields` is not generally recommended for use with structures where multiple simple type fields exist with the same name, however if used with such a structure, the first field to use a given name wins. "first" means the first field encountered in a depth first search. "wins" means only the first field will be present as a field when data binding.

      Specified by:
        `getUseFlatFields` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setHiliteProperty

          public ColumnTree setHiliteProperty(java.lang.String hiliteProperty)

      Description copied from interface: `DataBoundComponent`
      Marker that can be set on a record to flag that record as hilited. Should be set to a value that matches `id` for a hilite defined on this component.
      Specified by:
        `setHiliteProperty` in interface `DataBoundComponent`
      Parameters:
        `hiliteProperty` - hiliteProperty Default value is "_hilite"
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getHiliteProperty

          public java.lang.String getHiliteProperty()

      Description copied from interface: `DataBoundComponent`
      Marker that can be set on a record to flag that record as hilited. Should be set to a value that matches `id` for a hilite defined on this component.
      Specified by:
        `getHiliteProperty` in interface `DataBoundComponent`
      Returns:
        String

    - #### editFields

          public void editFields()

      Shows a FieldPicker interface allowing end-users to rearrange the order and visibiility of the fields in the associated DataBoundComponent.

    - #### editHilites

          public void editHilites()

      Description copied from interface: `DataBoundComponent`
      Shows a HiliteEditor interface allowing end-users to edit the data-hilites currently in use by this DataBoundComponent.
      Specified by:
        `editHilites` in interface `DataBoundComponent`

    - #### getHiliteState

          public java.lang.String getHiliteState()

      Description copied from interface: `DataBoundComponent`
      Get the current hilites encoded as a String, for saving.
      Specified by:
        `getHiliteState` in interface `DataBoundComponent`
      Returns:
        the hilite state

    - #### setHiliteState

          public ColumnTree setHiliteState(java.lang.String hiliteState)

      Description copied from interface: `DataBoundComponent`
      Set the current hilites based on a hiliteState String previously returned from getHilitesState.
      Specified by:
        `setHiliteState` in interface `DataBoundComponent`
      Parameters:
        `hiliteState` - hilites state encoded as a String
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### setHilites

          public ColumnTree setHilites(Hilite[] hilites)

      Description copied from interface: `DataBoundComponent`
      Accepts an array of hilite objects and applies them to this DataBoundComponent. See also `getHilites` for a method of retrieving the hilite array for storage, including hilites manually added by the user.

      NOTE: This is only supported on `ListGrid` for now.

      Specified by:
        `setHilites` in interface `DataBoundComponent`
      Parameters:
        `hilites` - array of hilite objects
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getHilites

          public Hilite[] getHilites()

      Description copied from interface: `DataBoundComponent`
      Return the set of hilite-objects currently applied to this DataBoundComponent. These can be saved for storage and then restored to a component later via setHilites().
      Specified by:
        `getHilites` in interface `DataBoundComponent`
      Returns:
        array of hilite objects

    - #### setDragDataAction

          public ColumnTree setDragDataAction(DragDataAction dragDataAction)

      Description copied from interface: `DataBoundComponent`
      Indicates what to do with data dragged into another DataBoundComponent. See DragDataAction type for details.
      Specified by:
        `setDragDataAction` in interface `DataBoundComponent`
      Parameters:
        `dragDataAction` - dragDataAction Default value is Canvas.MOVE
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getDragDataAction

          public DragDataAction getDragDataAction()

      Description copied from interface: `DataBoundComponent`
      Indicates what to do with data dragged into another DataBoundComponent. See DragDataAction type for details.
      Specified by:
        `getDragDataAction` in interface `DataBoundComponent`
      Returns:
        DragDataAction

    - #### setDragTrackerStyle

          public ColumnTree setDragTrackerStyle(java.lang.String dragTrackerStyle)

      Description copied from interface: `DataBoundComponent`
      CSS Style to apply to the drag tracker when dragging occurs on this component.
      Specified by:
        `setDragTrackerStyle` in interface `DataBoundComponent`
      Parameters:
        `dragTrackerStyle` - dragTrackerStyle Default value is "gridDragTracker"
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getDragTrackerStyle

          public java.lang.String getDragTrackerStyle()

      Description copied from interface: `DataBoundComponent`
      CSS Style to apply to the drag tracker when dragging occurs on this component.
      Specified by:
        `getDragTrackerStyle` in interface `DataBoundComponent`
      Returns:
        String

    - #### setCanAddFormulaFields

          public ColumnTree setCanAddFormulaFields(java.lang.Boolean canAddFormulaFields)

      Description copied from interface: `DataBoundComponent`
      Adds an item to the header context menu allowing users to launch a dialog to define a new field based on values present in other fields, using the `com.smartgwt.client..FormulaBuilder`.

      User-added formula fields can be persisted via `ListGrid.getFieldState()` and `ListGrid.setFieldState(java.lang.String)`.

      Specified by:
        `setCanAddFormulaFields` in interface `DataBoundComponent`
      Parameters:
        `canAddFormulaFields` - canAddFormulaFields Default value is false
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### addSummaryField

          public void addSummaryField()

      Description copied from interface: `DataBoundComponent`
      Convenience method to display a `com.smartgwt.client..SummaryBuilder` to create a new Summary Field. This is equivalent to calling `DataBoundComponentGen#editSummaryField` with no parameter.
      Specified by:
        `addSummaryField` in interface `DataBoundComponent`

    - #### addFormulaField

          public void addFormulaField()

      Description copied from interface: `DataBoundComponent`
      Convenience method to display a `com.smartgwt.client..FormulaBuilder` to create a new Formula Field. This is equivalent to calling `DataBoundComponentGen#editFormulaField` with no parameter.
      Specified by:
        `addFormulaField` in interface `DataBoundComponent`

    - #### getCanAddFormulaFields

          public java.lang.Boolean getCanAddFormulaFields()

      Description copied from interface: `DataBoundComponent`
      Adds an item to the header context menu allowing users to launch a dialog to define a new field based on values present in other fields, using the `com.smartgwt.client..FormulaBuilder`.

      User-added formula fields can be persisted via `ListGrid.getFieldState()` and `ListGrid.setFieldState(java.lang.String)`.

      Specified by:
        `getCanAddFormulaFields` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setAddFormulaFieldText

          public ColumnTree setAddFormulaFieldText(java.lang.String addFormulaFieldText)

      Description copied from interface: `DataBoundComponent`
      Text for a menu item allowing users to add a formula field
      Specified by:
        `setAddFormulaFieldText` in interface `DataBoundComponent`
      Parameters:
        `addFormulaFieldText` - addFormulaFieldText Default value is "Add formula column..."
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getAddFormulaFieldText

          public java.lang.String getAddFormulaFieldText()

      Description copied from interface: `DataBoundComponent`
      Text for a menu item allowing users to add a formula field
      Specified by:
        `getAddFormulaFieldText` in interface `DataBoundComponent`
      Returns:
        String

    - #### setEditFormulaFieldText

          public ColumnTree setEditFormulaFieldText(java.lang.String editFormulaFieldText)

      Description copied from interface: `DataBoundComponent`
      Text for a menu item allowing users to edit a formula field
      Specified by:
        `setEditFormulaFieldText` in interface `DataBoundComponent`
      Parameters:
        `editFormulaFieldText` - editFormulaFieldText Default value is "Edit formula..."
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getEditFormulaFieldText

          public java.lang.String getEditFormulaFieldText()

      Description copied from interface: `DataBoundComponent`
      Text for a menu item allowing users to edit a formula field
      Specified by:
        `getEditFormulaFieldText` in interface `DataBoundComponent`
      Returns:
        String

    - #### setCanAddSummaryFields

          public ColumnTree setCanAddSummaryFields(java.lang.Boolean canAddSummaryFields)

      Description copied from interface: `DataBoundComponent`
      Adds an item to the header context menu allowing users to launch a dialog to define a new text field that can contain both user-defined text and the formatted values present in other fields, using the `com.smartgwt.client..SummaryBuilder`.

      User-added summary fields can be persisted via `ListGrid.getFieldState()` and `ListGrid.setFieldState(java.lang.String)`.

      Specified by:
        `setCanAddSummaryFields` in interface `DataBoundComponent`
      Parameters:
        `canAddSummaryFields` - canAddSummaryFields Default value is false
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getCanAddSummaryFields

          public java.lang.Boolean getCanAddSummaryFields()

      Description copied from interface: `DataBoundComponent`
      Adds an item to the header context menu allowing users to launch a dialog to define a new text field that can contain both user-defined text and the formatted values present in other fields, using the `com.smartgwt.client..SummaryBuilder`.

      User-added summary fields can be persisted via `ListGrid.getFieldState()` and `ListGrid.setFieldState(java.lang.String)`.

      Specified by:
        `getCanAddSummaryFields` in interface `DataBoundComponent`
      Returns:
        Boolean

    - #### setAddSummaryFieldText

          public ColumnTree setAddSummaryFieldText(java.lang.String addSummaryFieldText)

      Description copied from interface: `DataBoundComponent`
      Text for a menu item allowing users to add a formula field
      Specified by:
        `setAddSummaryFieldText` in interface `DataBoundComponent`
      Parameters:
        `addSummaryFieldText` - addSummaryFieldText Default value is "Add summary column..."
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getAddSummaryFieldText

          public java.lang.String getAddSummaryFieldText()

      Description copied from interface: `DataBoundComponent`
      Text for a menu item allowing users to add a formula field
      Specified by:
        `getAddSummaryFieldText` in interface `DataBoundComponent`
      Returns:
        String

    - #### setEditSummaryFieldText

          public ColumnTree setEditSummaryFieldText(java.lang.String editSummaryFieldText)

      Description copied from interface: `DataBoundComponent`
      Text for a menu item allowing users to edit the formatter for a field
      Specified by:
        `setEditSummaryFieldText` in interface `DataBoundComponent`
      Parameters:
        `editSummaryFieldText` - editSummaryFieldText Default value is "Edit summary format..."
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getEditSummaryFieldText

          public java.lang.String getEditSummaryFieldText()

      Description copied from interface: `DataBoundComponent`
      Text for a menu item allowing users to edit the formatter for a field
      Specified by:
        `getEditSummaryFieldText` in interface `DataBoundComponent`
      Returns:
        String

    - #### findAll

          public Record[] findAll(AdvancedCriteria adCriteria)

      Filters all objects according to the AdvancedCriteria passed
      Parameters:
        `adCriteria` - AdvancedCriteria to use to filter results
      Returns:
        all matching Objects or null if none found

    - #### find

          public Record find(AdvancedCriteria adCriteria)

      Filters all objects according to the AdvancedCriteria passed and returns the first matching object or null if not found
      Parameters:
        `adCriteria` - AdvancedCriteria to use to filter results
      Returns:
        first matching object or null if not found

    - #### findIndex

          public int findIndex(AdvancedCriteria adCriteria)

      Finds the index of the first Record that matches with the AdvacendCriteria passed.
      Parameters:
        `adCriteria` - AdvancedCriteria to use to filter results
      Returns:
        index of the first matching Record or -1 if not found

    - #### findNextIndex

          public int findNextIndex(int startIndex,
                                   AdvancedCriteria adCriteria,
                                   int endIndex)

      Like `RecordList.findIndex(java.util.Map)`, but considering the startIndex and endIndex parameters.
      Parameters:
        `startIndex` - first index to consider
        `adCriteria` - AdvancedCriteria to use to filter results
        `endIndex` - last index to consider
      Returns:
        index of the first matching Record or -1 if not found

    - #### findNextIndex

          public int findNextIndex(int startIndex,
                                   AdvancedCriteria adCriteria)

      Like `RecordList.findIndex(java.util.Map)`, but considering the startIndex parameter.
      Parameters:
        `startIndex` - first index to consider
        `adCriteria` - AdvancedCriteria to use to filter results
      Returns:
        index of the first matching Record or -1 if not found

    - #### selectRecord

          public void selectRecord(Record record)

      Description copied from interface: `DataBoundComponent`
      Select/deselect a `Record` passed in explicitly, or by index.
      Specified by:
        `selectRecord` in interface `DataBoundComponent`
      Parameters:
        `record` - record (or row number) to select

    - #### selectRecord

          public void selectRecord(int record)

      Description copied from interface: `DataBoundComponent`
      Select/deselect a `Record` passed in explicitly, or by index.
      Specified by:
        `selectRecord` in interface `DataBoundComponent`
      Parameters:
        `record` - record (or row number) to select

    - #### selectRecord

          public void selectRecord(int record,
                                   boolean newState)

      Description copied from interface: `DataBoundComponent`
      Select/deselect a `Record` passed in explicitly, or by index.
      Specified by:
        `selectRecord` in interface `DataBoundComponent`
      Parameters:
        `record` - record (or row number) to select
        `newState` - new selection state (if null, defaults to true)

    - #### selectRecord

          public void selectRecord(Record record,
                                   boolean newState)

      Description copied from interface: `DataBoundComponent`
      Select/deselect a `Record` passed in explicitly, or by index.
      Specified by:
        `selectRecord` in interface `DataBoundComponent`
      Parameters:
        `record` - record (or row number) to select
        `newState` - new selection state (if null, defaults to true)

    - #### selectRecords

          public void selectRecords(int[] records)

      Description copied from interface: `DataBoundComponent`
      Select/deselect a list of `Record`s passed in explicitly, or by index.
      Specified by:
        `selectRecords` in interface `DataBoundComponent`
      Parameters:
        `records` - records (or row numbers) to select

    - #### selectRecords

          public void selectRecords(int[] records,
                                    boolean newState)

      Description copied from interface: `DataBoundComponent`
      Select/deselect a list of `Record`s passed in explicitly, or by index.
      Specified by:
        `selectRecords` in interface `DataBoundComponent`
      Parameters:
        `records` - records (or row numbers) to select
        `newState` - new selection state

    - #### selectRecords

          public void selectRecords(Record[] records)

      Description copied from interface: `DataBoundComponent`
      Select/deselect a list of `Record`s passed in explicitly, or by index.
      Specified by:
        `selectRecords` in interface `DataBoundComponent`
      Parameters:
        `records` - records (or row numbers) to select

    - #### selectRecords

          public void selectRecords(Record[] records,
                                    boolean newState)

      Description copied from interface: `DataBoundComponent`
      Select/deselect a list of `Record`s passed in explicitly, or by index.
      Specified by:
        `selectRecords` in interface `DataBoundComponent`
      Parameters:
        `records` - records (or row numbers) to select
        `newState` - new selection state (if null, defaults to true)

    - #### deselectRecord

          public void deselectRecord(Record record)

      Description copied from interface: `DataBoundComponent`
      Deselect a `Record` passed in explicitly, or by index.

      Synonym for `selectRecord(record, false)`

      Specified by:
        `deselectRecord` in interface `DataBoundComponent`
      Parameters:
        `record` - record (or row number) to deselect

    - #### deselectRecord

          public void deselectRecord(int record)

      Description copied from interface: `DataBoundComponent`
      Deselect a `Record` passed in explicitly, or by index.

      Synonym for `selectRecord(record, false)`

      Specified by:
        `deselectRecord` in interface `DataBoundComponent`
      Parameters:
        `record` - record (or row number) to deselect

    - #### deselectRecords

          public void deselectRecords(int[] records)

      Description copied from interface: `DataBoundComponent`
      Deselect a list of `Record`s passed in explicitly, or by index.

      Synonym for `selectRecords(records, false)`

      Specified by:
        `deselectRecords` in interface `DataBoundComponent`
      Parameters:
        `records` - records (or row numbers) to deselect

    - #### deselectRecords

          public void deselectRecords(Record[] records)

      Description copied from interface: `DataBoundComponent`
      Deselect a list of `Record`s passed in explicitly, or by index.

      Synonym for `selectRecords(records, false)`

      Specified by:
        `deselectRecords` in interface `DataBoundComponent`
      Parameters:
        `records` - records (or row numbers) to deselect

    - #### selectAllRecords

          public void selectAllRecords()

      Description copied from interface: `DataBoundComponent`
      Select all records
      Specified by:
        `selectAllRecords` in interface `DataBoundComponent`

    - #### deselectAllRecords

          public void deselectAllRecords()

      Description copied from interface: `DataBoundComponent`
      Deselect all records
      Specified by:
        `deselectAllRecords` in interface `DataBoundComponent`

    - #### anySelected

          public java.lang.Boolean anySelected()

      Description copied from interface: `DataBoundComponent`
      Whether at least one item is selected
      Specified by:
        `anySelected` in interface `DataBoundComponent`
      Returns:
        true == at least one item is selected false == nothing at all is selected

    - #### enableHilite

          public void enableHilite(java.lang.String hiliteID)

      Description copied from interface: `DataBoundComponent`
      Enable / disable a `hilites`
      Specified by:
        `enableHilite` in interface `DataBoundComponent`
      Parameters:
        `hiliteID` - ID of hilite to enable

    - #### enableHilite

          public void enableHilite(java.lang.String hiliteID,
                                   boolean enable)

      Description copied from interface: `DataBoundComponent`
      Enable / disable a `hilites`
      Specified by:
        `enableHilite` in interface `DataBoundComponent`
      Parameters:
        `hiliteID` - ID of hilite to enable
        `enable` - new enabled state to apply - if null, defaults to true

    - #### disableHilite

          public void disableHilite(java.lang.String hiliteID)

      Description copied from interface: `DataBoundComponent`
      Disable a hilite
      Specified by:
        `disableHilite` in interface `DataBoundComponent`
      Parameters:
        `hiliteID` - ID of hilite to disable

    - #### enableHiliting

          public void enableHiliting()

      Description copied from interface: `DataBoundComponent`
      Enable all hilites.
      Specified by:
        `enableHiliting` in interface `DataBoundComponent`

    - #### enableHiliting

          public void enableHiliting(boolean enable)

      Description copied from interface: `DataBoundComponent`
      Enable all hilites.
      Specified by:
        `enableHiliting` in interface `DataBoundComponent`
      Parameters:
        `enable` - new enabled state to apply - if null, defaults to true

    - #### disableHiliting

          public void disableHiliting()

      Description copied from interface: `DataBoundComponent`
      Disable all hilites.
      Specified by:
        `disableHiliting` in interface `DataBoundComponent`

    - #### getDragData

          public Record[] getDragData()

      Description copied from interface: `DataBoundComponent`
      During a drag-and-drop interaction, this method returns the set of records being dragged out of the component. In the default implementation, this is the list of currently selected records.

      This method is consulted by `ListGrid.willAcceptDrop()`.

      Specified by:
        `getDragData` in interface `DataBoundComponent`
      Returns:
        Array of `Record`s that are currently selected.

    - #### transferSelectedData

          public void transferSelectedData(DataBoundComponent source)

      Description copied from interface: `DataBoundComponent`
      Simulates a drag / drop type transfer of the selected records in some other component to this component, without requiring any user interaction. This method acts on the dropped records exactly as if they had been dropped in an actual drag / drop interaction, including any special databound behavior invoked by calling `DataBoundComponent.getDropValues()` for each dropped record.

      To transfer all data in, for example, a `ListGrid`, call grid.selection.selectAll() first.

      Note that drag/drop type transfers of records between components are asynchronous operations: Smart GWT may need to perform server turnarounds to establish whether dropped records already exist in the target component. Therefore, it is possible to issue a call to `transferSelectedData()` and/or the `drop()` method of a databound component whilst a transfer is still active. When this happens, Smart GWT adds the second and subsequent transfer requests to a queue and runs them one after the other. If you want to be notified when a transfer process has actually completed, use `addDropCompleteHandler`. See the `Dragging` documentation for an overview of list grid drag/drop data transfer.

      Specified by:
        `transferSelectedData` in interface `DataBoundComponent`
      Parameters:
        `source` - source component from which the records will be tranferred

    - #### transferSelectedData

          public void transferSelectedData(DataBoundComponent source,
                                           int index)

      Description copied from interface: `DataBoundComponent`
      Simulates a drag / drop type transfer of the selected records in some other component to this component, without requiring any user interaction. This method acts on the dropped records exactly as if they had been dropped in an actual drag / drop interaction, including any special databound behavior invoked by calling `DataBoundComponent.getDropValues()` for each dropped record.

      To transfer all data in, for example, a `ListGrid`, call grid.selection.selectAll() first.

      Note that drag/drop type transfers of records between components are asynchronous operations: Smart GWT may need to perform server turnarounds to establish whether dropped records already exist in the target component. Therefore, it is possible to issue a call to `transferSelectedData()` and/or the `drop()` method of a databound component whilst a transfer is still active. When this happens, Smart GWT adds the second and subsequent transfer requests to a queue and runs them one after the other. If you want to be notified when a transfer process has actually completed, use `addDropCompleteHandler`. See the `Dragging` documentation for an overview of list grid drag/drop data transfer.

      Specified by:
        `transferSelectedData` in interface `DataBoundComponent`
      Parameters:
        `source` - source component from which the records will be transferred
        `index` - target index (drop position) of the rows within this grid.

    - #### getRecordIndex

          public int getRecordIndex(Record record)

      Description copied from interface: `DataBoundComponent`
      Get the index of the provided record.

      Override in subclasses to provide more specific behaviour, for instance, when data holds a large number of records

      Specified by:
        `getRecordIndex` in interface `DataBoundComponent`
      Parameters:
        `record` - the record whose index is to be retrieved
      Returns:
        indexindex of the record, or -1 if not found

    - #### getTitleFieldValue

          public java.lang.String getTitleFieldValue(Record record)

      Description copied from interface: `DataBoundComponent`
      Get the value of the titleField for the passed record

      Override in subclasses

      Specified by:
        `getTitleFieldValue` in interface `DataBoundComponent`
      Parameters:
        `record` - the record whose index is to be retrieved
      Returns:
        valuethe value of the titleField for the passed record

    - #### setTitleField

          public ColumnTree setTitleField(java.lang.String titleField)

      Description copied from interface: `DataBoundComponent`
      Sets the best field to use for a user-visible title for an individual record from this component.
      Specified by:
        `setTitleField` in interface `DataBoundComponent`
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getTitleField

          public java.lang.String getTitleField()

      Description copied from interface: `DataBoundComponent`
      Method to return the fieldName which represents the "title" for records in this Component.
      If this.titleField is explicitly specified it will always be used. Otherwise, default implementation will check `titleField` for databound components.
      For non databound components returns the first defined field name of `"title"`, `"name"`, or `"id"`. If we dont find any field-names that match these titles, the first field in the component will be used instead.
      Specified by:
        `getTitleField` in interface `DataBoundComponent`
      Returns:
        fieldName the title field for this component.

    - #### getDataSource

          public DataSource getDataSource()

      Description copied from interface: `DataBoundComponent`
      The DataSource that this component should bind to for default fields and for performing `DataSource requests`.
      Specified by:
        `getDataSource` in interface `DataBoundComponent`
      Returns:
        DataSource

    - #### setAutoFetchData

          public ColumnTree setAutoFetchData(java.lang.Boolean autoFetchData)
                                      throws java.lang.IllegalStateException

      Description copied from interface: `DataBoundComponent`
      If true, when this component is first drawn, automatically call `DataBoundComponent.fetchData()` or `DataBoundComponent.filterData()` depending on `DataBoundComponent.getAutoFetchAsFilter()` . Criteria for this fetch may be picked up from `initialCriteria` and textMatchStyle may be specified via `DataBoundComponent.getAutoFetchTextMatchStyle()`.

      NOTE: If autoFetchData is set, calling ListGrid.fetchData() before draw will cause two requests to be issued, one from the manual call to fetchData() and one from the autoFetchData setting. The second request will use only `initialCriteria` and not any other criteria or settings from the first request. Generally, turn off autoFetchData if you are going to manually call fetchData() at any time.

      Specified by:
        `setAutoFetchData` in interface `DataBoundComponent`
      Parameters:
        `autoFetchData` - autoFetchData
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException`

    - #### getAutoFetchData

          public java.lang.Boolean getAutoFetchData()

      Description copied from interface: `DataBoundComponent`
      If true, when this component is first drawn, automatically call `DataBoundComponent.fetchData()` or `DataBoundComponent.filterData()` depending on `DataBoundComponent.getAutoFetchAsFilter()` . Criteria for this fetch may be picked up from `initialCriteria` and textMatchStyle may be specified via `DataBoundComponent.getAutoFetchTextMatchStyle()`.

      NOTE: If autoFetchData is set, calling ListGrid.fetchData() before draw will cause two requests to be issued, one from the manual call to fetchData() and one from the autoFetchData setting. The second request will use only `initialCriteria` and not any other criteria or settings from the first request. Generally, turn off autoFetchData if you are going to manually call fetchData() at any time.

      Specified by:
        `getAutoFetchData` in interface `DataBoundComponent`
      Returns:
        autoFetchData autoFetchData

    - #### setAutoFetchTextMatchStyle

          public ColumnTree setAutoFetchTextMatchStyle(TextMatchStyle autoFetchTextMatchStyle)
                                                throws java.lang.IllegalStateException

      Description copied from interface: `DataBoundComponent`
      If `autoFetchData` is `true`, this attribute allows the developer to specify a textMatchStyle for the initial `DataBoundComponent.fetchData()` call.
      Specified by:
        `setAutoFetchTextMatchStyle` in interface `DataBoundComponent`
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException`

    - #### getAutoFetchTextMatchStyle

          public TextMatchStyle getAutoFetchTextMatchStyle()

      Description copied from interface: `DataBoundComponent`
      If `autoFetchData` is `true`, this attribute allows the developer to specify a textMatchStyle for the initial `DataBoundComponent.fetchData()` call.
      Specified by:
        `getAutoFetchTextMatchStyle` in interface `DataBoundComponent`
      Returns:
        autoFetchTextMatchStyle autoFetchTextMatchStyle

    - #### setAutoFetchAsFilter

          public ColumnTree setAutoFetchAsFilter(java.lang.Boolean autoFetchAsFilter)
                                          throws java.lang.IllegalStateException

      Description copied from interface: `DataBoundComponent`
      If `DataBoundComponent.setAutoFetchData(Boolean)` is true, this attribute determines whether the initial fetch operation should be performed via `DataBoundComponent.fetchData()` or `DataBoundComponent.filterData()`
      Specified by:
        `setAutoFetchAsFilter` in interface `DataBoundComponent`
      Parameters:
        `autoFetchAsFilter` - autoFetchAsFilter
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException`

    - #### getAutoFetchAsFilter

          public java.lang.Boolean getAutoFetchAsFilter()

      Description copied from interface: `DataBoundComponent`
      If `DataBoundComponent.setAutoFetchData(Boolean)` is true, this attribute determines whether the initial fetch operation should be performed via `DataBoundComponent.fetchData()` or `DataBoundComponent.filterData()`
      Specified by:
        `getAutoFetchAsFilter` in interface `DataBoundComponent`
      Returns:
        auto fetch as filter

    - #### setInitialCriteria

          public ColumnTree setInitialCriteria(Criteria initialCriteria)
                                        throws java.lang.IllegalStateException

      Description copied from interface: `DataBoundComponent`
      Criteria to use when `DataBoundComponent.setAutoFetchData(Boolean)` is used.
      Specified by:
        `setInitialCriteria` in interface `DataBoundComponent`
      Parameters:
        `initialCriteria` - the initial criteria
      Returns:
        `DataBoundComponent` instance, for chaining setter calls
      Throws:
        `java.lang.IllegalStateException` - this property cannot be changed after the component has been created

    - #### getInitialCriteria

          public Criteria getInitialCriteria()

      Description copied from interface: `DataBoundComponent`
      Criteria to use when `DataBoundComponent.setAutoFetchData(Boolean)` is used.
      Specified by:
        `getInitialCriteria` in interface `DataBoundComponent`
      Returns:
        the criteria

    - #### setImplicitCriteria

          public ColumnTree setImplicitCriteria(Criteria implicitCriteria)

      Description copied from interface: `DataBoundComponent`
      Criteria that are never shown to or edited by the user and are cumulative with any criteria provided via `DataBoundComponent.initialCriteria`, `DataBoundComponent.setCriteria()` etc.
      Specified by:
        `setImplicitCriteria` in interface `DataBoundComponent`
      Parameters:
        `implicitCriteria` - New implicitCriteria value. Default value is null
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### setImplicitCriteria

          public java.lang.Boolean setImplicitCriteria(Criteria implicitCriteria,
                                                       DSCallback callback)

    - #### setImplicitCriteria

          public java.lang.Boolean setImplicitCriteria(Criteria criteria,
                                                       DSCallback callback,
                                                       java.lang.Boolean initialFetch)

    - #### getImplicitCriteria

          public Criteria getImplicitCriteria()

      Description copied from interface: `DataBoundComponent`
      Criteria that are never shown to or edited by the user and are cumulative with any criteria provided via `DataBoundComponent.initialCriteria`, `DataBoundComponent.setCriteria()` etc.
      Specified by:
        `getImplicitCriteria` in interface `DataBoundComponent`
      Returns:
        Current implicitCriteria value. Default value is null

    - #### fetchData

          public void fetchData()

      Description copied from interface: `DataBoundComponent`
      Retrieves data from the DataSource that matches the specified criteria.

      When `fetchData()` is first called, if data has not already been provided via `setData()`, this method will create a `ResultSet`, which will be configured based on component settings such as `fetchOperation` and `dataPageSize`, as well as the general purpose `dataProperties`. The created ResultSet will automatically send a DSRequest to retrieve data from the dataSource, and from then on will automatically manage paging through large datasets, as well as performing filtering and sorting operations inside the browser when possible - see the ResultSet docs for details.

      NOTE: do not use both `autoFetchData` and a call to `fetchData()` - this may result in two DSRequests to fetch data. Use either `autoFetchData` and `setAutoFetchCriteria()` or a manual call to fetchData() passing criteria.

      Whether a ResultSet was automatically created or provided via `setData()`, subsequent calls to fetchData() will simply call `resultSet.setCriteria()`.

      Changes to criteria may or may not result in a DSRequest to the server due to client-side filtering. You can call `willFetchData(criteria)` to determine if new criteria will result in a server fetch.

      If you need to force data to be re-fetched, you can call `invalidateCache()` and new data will automatically be fetched from the server using the current criteria and sort direction. NOTE: when using `invalidateCache()` there is no need to also call `fetchData()` and in fact this could produce unexpected results.

      This method takes an optional callback parameter (set to a `DSCallback`) to fire when the fetch completes. Note that this callback will not fire if no server fetch is performed. In this case the data is updated synchronously, so as soon as this method completes you can interact with the new data. If necessary, you can use `resultSet.willFetchData()` to determine whether or not a server fetch will occur when `fetchData()` is called with new criteria.

      In addition to the callback parameter for this method, developers can use `resultSet.addDataArrivedHandler` to be notified every time data is loaded.

      Specified by:
        `fetchData` in interface `DataBoundComponent`

    - #### fetchData

          public void fetchData(Criteria criteria)

      Description copied from interface: `DataBoundComponent`
      Retrieves data from the DataSource that matches the specified criteria.

      When `fetchData()` is first called, if data has not already been provided via `setData()`, this method will create a `ResultSet`, which will be configured based on component settings such as `fetchOperation` and `dataPageSize`, as well as the general purpose `dataProperties`. The created ResultSet will automatically send a DSRequest to retrieve data from the dataSource, and from then on will automatically manage paging through large datasets, as well as performing filtering and sorting operations inside the browser when possible - see the ResultSet docs for details.

      NOTE: do not use both `autoFetchData` and a call to `fetchData()` - this may result in two DSRequests to fetch data. Use either `autoFetchData` and `setAutoFetchCriteria()` or a manual call to fetchData() passing criteria.

      Whether a ResultSet was automatically created or provided via `setData()`, subsequent calls to fetchData() will simply call `resultSet.setCriteria()`.

      Changes to criteria may or may not result in a DSRequest to the server due to client-side filtering. You can call `willFetchData(criteria)` to determine if new criteria will result in a server fetch.

      If you need to force data to be re-fetched, you can call `invalidateCache()` and new data will automatically be fetched from the server using the current criteria and sort direction. NOTE: when using `invalidateCache()` there is no need to also call `fetchData()` and in fact this could produce unexpected results.

      This method takes an optional callback parameter (set to a `DSCallback`) to fire when the fetch completes. Note that this callback will not fire if no server fetch is performed. In this case the data is updated synchronously, so as soon as this method completes you can interact with the new data. If necessary, you can use `resultSet.willFetchData()` to determine whether or not a server fetch will occur when `fetchData()` is called with new criteria.

      In addition to the callback parameter for this method, developers can use `resultSet.addDataArrivedHandler` to be notified every time data is loaded.

      Specified by:
        `fetchData` in interface `DataBoundComponent`
      Parameters:
        `criteria` - Search criteria. If a `DynamicForm` is passed in as this argument instead of a raw criteria object, will be derived by calling `DynamicForm.getValuesAsCriteria()`

    - #### fetchData

          public void fetchData(Criteria criteria,
                                DSCallback callback)

      Description copied from interface: `DataBoundComponent`
      Retrieves data from the DataSource that matches the specified criteria.

      When `fetchData()` is first called, if data has not already been provided via `setData()`, this method will create a `ResultSet`, which will be configured based on component settings such as `fetchOperation` and `dataPageSize`, as well as the general purpose `dataProperties`. The created ResultSet will automatically send a DSRequest to retrieve data from the dataSource, and from then on will automatically manage paging through large datasets, as well as performing filtering and sorting operations inside the browser when possible - see the ResultSet docs for details.

      NOTE: do not use both `autoFetchData` and a call to `fetchData()` - this may result in two DSRequests to fetch data. Use either `autoFetchData` and `setAutoFetchCriteria()` or a manual call to fetchData() passing criteria.

      Whether a ResultSet was automatically created or provided via `setData()`, subsequent calls to fetchData() will simply call `resultSet.setCriteria()`.

      Changes to criteria may or may not result in a DSRequest to the server due to client-side filtering. You can call `willFetchData(criteria)` to determine if new criteria will result in a server fetch.

      If you need to force data to be re-fetched, you can call `invalidateCache()` and new data will automatically be fetched from the server using the current criteria and sort direction. NOTE: when using `invalidateCache()` there is no need to also call `fetchData()` and in fact this could produce unexpected results.

      This method takes an optional callback parameter (set to a `DSCallback`) to fire when the fetch completes. Note that this callback will not fire if no server fetch is performed. In this case the data is updated synchronously, so as soon as this method completes you can interact with the new data. If necessary, you can use `resultSet.willFetchData()` to determine whether or not a server fetch will occur when `fetchData()` is called with new criteria.

      In addition to the callback parameter for this method, developers can use `resultSet.addDataArrivedHandler` to be notified every time data is loaded.

      Specified by:
        `fetchData` in interface `DataBoundComponent`
      Parameters:
        `criteria` - Search criteria. If a `DynamicForm` is passed in as this argument instead of a raw criteria object, will be derived by calling `DynamicForm.getValuesAsCriteria()`
        `callback` - callback to invoke when a fetch is complete. Fires only if server contact was required

    - #### fetchData

          public void fetchData(Criteria criteria,
                                DSCallback callback,
                                DSRequest requestProperties)

      Description copied from interface: `DataBoundComponent`
      Retrieves data from the DataSource that matches the specified criteria.

      When `fetchData()` is first called, if data has not already been provided via `setData()`, this method will create a `ResultSet`, which will be configured based on component settings such as `fetchOperation` and `dataPageSize`, as well as the general purpose `dataProperties`. The created ResultSet will automatically send a DSRequest to retrieve data from the dataSource, and from then on will automatically manage paging through large datasets, as well as performing filtering and sorting operations inside the browser when possible - see the ResultSet docs for details.

      NOTE: do not use both `autoFetchData` and a call to `fetchData()` - this may result in two DSRequests to fetch data. Use either `autoFetchData` and `setAutoFetchCriteria()` or a manual call to fetchData() passing criteria.

      Whether a ResultSet was automatically created or provided via `setData()`, subsequent calls to fetchData() will simply call `resultSet.setCriteria()`.

      Changes to criteria may or may not result in a DSRequest to the server due to client-side filtering. You can call `willFetchData(criteria)` to determine if new criteria will result in a server fetch.

      If you need to force data to be re-fetched, you can call `invalidateCache()` and new data will automatically be fetched from the server using the current criteria and sort direction. NOTE: when using `invalidateCache()` there is no need to also call `fetchData()` and in fact this could produce unexpected results.

      This method takes an optional callback parameter (set to a `DSCallback`) to fire when the fetch completes. Note that this callback will not fire if no server fetch is performed. In this case the data is updated synchronously, so as soon as this method completes you can interact with the new data. If necessary, you can use `resultSet.willFetchData()` to determine whether or not a server fetch will occur when `fetchData()` is called with new criteria.

      In addition to the callback parameter for this method, developers can use `resultSet.addDataArrivedHandler` to be notified every time data is loaded.

      Specified by:
        `fetchData` in interface `DataBoundComponent`
      Parameters:
        `criteria` - Search criteria. If a `DynamicForm` is passed in as this argument instead of a raw criteria object, will be derived by calling `DynamicForm.getValuesAsCriteria()`
        `callback` - callback to invoke when a fetch is complete. Fires only if server contact was required
        `requestProperties` - additional properties to set on the DSRequest that will be issued

    - #### filterData

          public void filterData()

      Description copied from interface: `DataBoundComponent`
      Retrieves data that matches the provided criteria and displays the matching data in this component.

      This method behaves exactly like `ListGrid.fetchData()` except that `textMatchStyle` is automatically set to "substring" so that String-valued fields are matched by case-insensitive substring comparison.

      Specified by:
        `filterData` in interface `DataBoundComponent`

    - #### filterData

          public void filterData(Criteria criteria)

      Description copied from interface: `DataBoundComponent`
      Retrieves data that matches the provided criteria and displays the matching data in this component.

      This method behaves exactly like `ListGrid.fetchData()` except that `textMatchStyle` is automatically set to "substring" so that String-valued fields are matched by case-insensitive substring comparison.

      Specified by:
        `filterData` in interface `DataBoundComponent`
      Parameters:
        `criteria` - Search criteria. If a `DynamicForm` is passed in as this argument instead of a raw criteria object, will be derived by calling `DynamicForm.getValuesAsCriteria()`

    - #### filterData

          public void filterData(Criteria criteria,
                                 DSCallback callback)

      Description copied from interface: `DataBoundComponent`
      Retrieves data that matches the provided criteria and displays the matching data in this component.

      This method behaves exactly like `ListGrid.fetchData()` except that `textMatchStyle` is automatically set to "substring" so that String-valued fields are matched by case-insensitive substring comparison.

      Specified by:
        `filterData` in interface `DataBoundComponent`
      Parameters:
        `criteria` - Search criteria. If a `DynamicForm` is passed in as this argument instead of a raw criteria object, will be derived by calling `DynamicForm.getValuesAsCriteria()`
        `callback` - callback to invoke when a fetch is complete. Fires only if server contact was required; see `DataBoundComponent.fetchData()` for details

    - #### filterData

          public void filterData(Criteria criteria,
                                 DSCallback callback,
                                 DSRequest requestProperties)

      Description copied from interface: `DataBoundComponent`
      Retrieves data that matches the provided criteria and displays the matching data in this component.

      This method behaves exactly like `ListGrid.fetchData()` except that `textMatchStyle` is automatically set to "substring" so that String-valued fields are matched by case-insensitive substring comparison.

      Specified by:
        `filterData` in interface `DataBoundComponent`
      Parameters:
        `criteria` - Search criteria. If a `DynamicForm` is passed in as this argument instead of a raw criteria object, will be derived by calling `DynamicForm.getValuesAsCriteria()`
        `callback` - callback to invoke when a fetch is complete. Fires only if server contact was required; see `DataBoundComponent.fetchData()` for details
        `requestProperties` - for databound components only - optional additional properties to set on the DSRequest that will be issued

    - #### invalidateCache

          public void invalidateCache()

      Description copied from interface: `DataBoundComponent`
      Invalidate the current data cache for this databound component via a call to the dataset's `invalidateCache()` method, for example, `ResultSet.invalidateCache()`.

      NOTE: there is no need to call `invalidateCache()` when a save operation is performed on a DataSource. Automatic cache synchronization features will automatically update caches - see `ResultSet` for details. If automatic cache synchronization isn't working, troubleshoot the problem using the steps suggested in the FAQ rather than just calling invalidateCache(). Calling `invalidateCache()` unnecessarily causes extra server load and added code complexity.

      Calling `invalidateCache()` will automatically cause a new fetch to be performed with the current set of criteria if data had been previously fetched and the component is currently drawn with data visible - there is no need to manually call fetchData() after invalidateCache() and this could result in duplicate fetches.

      While data is being re-loaded after a call to `invalidateCache()`, the widget is in a state similar to initial data load - it doesn't know the total length of the dataset and any APIs that act on records or row indices will necessarily fail and should not be called. To detect that the widget is in this state, call `ResultSet.lengthIsKnown()`.

      `invalidateCache()` only has an effect if this component's dataset is a data manager class that manages a cache (eg ResultSet or ResultTree). If data was provided as a simple Array or List, invalidateCache() does nothing.

      Specified by:
        `invalidateCache` in interface `DataBoundComponent`
      See Also:
        `ListGrid.refreshData()`, `DataBoundComponentMethods overview and related methods`

    - #### getResultSet

          public ResultSet getResultSet()

      Description copied from interface: `DataBoundComponent`
      Return the underlying data of this DataBoundComponent as a `ResultSet`.

      Note that this method should only be called after initial data has been fetched by this DataBoundComponent.

      Specified by:
        `getResultSet` in interface `DataBoundComponent`
      Returns:
        ResultSet, or null if the underlying data is not a ResultSet
      See Also:
        `DataBoundComponent.fetchData()`

    - #### getRecordList

          public RecordList getRecordList()

      Description copied from interface: `DataBoundComponent`
      Return the underlying data of this DataBoundComponent as a `RecordList`.

      Depending on the component configuration, the actual JavaScript instance of the returned RecordList may be one of several types:

      - If the component is not bound to a `DataSource`, the instance is generally an Array of `Record`.
      - If the component is bound to a DataSource, the instance is a `ResultSet`.
      - If the component is a grouped ListGrid, the instance is a `Tree`. To access the ungrouped record list regardless of grouping status, use

            isGrouped() ? getOriginalRecordList() : getRecordList()

      - If the component is a `TreeGrid`, the instance is a ResultTree.
      The underlying type determines the structure of the returned data. An Array or ResultSet represents a list of records, but a Tree or ResultTree represents a list of open rows in the tree, including groups or other nodes which contain no records.
      Specified by:
        `getRecordList` in interface `DataBoundComponent`
      Returns:
        the RecordList

    - #### getDataAsJSList

          public com.google.gwt.core.client.JavaScriptObject getDataAsJSList()

      Specified by:
        `getDataAsJSList` in interface `DataBoundComponent`

    - #### exportData

          public void exportData()

      Description copied from interface: `DataBoundComponent`
      See `DataBoundComponent.exportData(com.smartgwt.client.data.DSRequest,com.smartgwt.client.rpc.RPCCallback)`
      Specified by:
        `exportData` in interface `DataBoundComponent`

    - #### exportData

          public void exportData(DSRequest requestProperties)

      Description copied from interface: `DataBoundComponent`
      See `DataBoundComponent.exportData(com.smartgwt.client.data.DSRequest,com.smartgwt.client.rpc.RPCCallback)`
      Specified by:
        `exportData` in interface `DataBoundComponent`

    - #### exportData

          public void exportData(DSRequest requestProperties,
                                 RPCCallback callback)

      Description copied from interface: `DataBoundComponent`
      Uses a "fetch" operation on the current `DataSource` to retrieve data that matches the current filter and sort criteria for this component, then exports the resulting data to a file or window in the requested format.

      A variety of DSRequest settings, such as `exportAs` and `exportFilename`, affect the exporting process: see `exportResults` for further detail.

      Note that data exported via this method does not include any client-side formatting and relies on both the Smart GWT server and server-side DataSources. To export client-data with formatters applied, see `exportClientData`, which still requires the Smart GWT server but does not rely on server-side DataSources.

      For more information on exporting data, see `DataSource.exportData`.

      Specified by:
        `exportData` in interface `DataBoundComponent`
      Parameters:
        `requestProperties` - additional properties to set on DSRequest that will be issued
        `callback` - Optional callback. Note that this parameter only applies if you specify `exportToClient`: false in the request properties, because file downloads don't provide ordinary framework callbacks
      See Also:
        `DataBoundComponentMethods overview and related methods`

    - #### addFetchDataHandler

          public com.google.gwt.event.shared.HandlerRegistration addFetchDataHandler(FetchDataHandler handler)

      Add a fetchData handler.

      Notification function fired on fetchData() or filterData()

      Specified by:
        `addFetchDataHandler` in interface `HasFetchDataHandlers`
      Parameters:
        `handler` - the filterData handler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDropCompleteHandler

          public com.google.gwt.event.shared.HandlerRegistration addDropCompleteHandler(DropCompleteHandler handler)

      Add a `com.smartgwt.client.widgets.DropCompleteHandler`. See that class's documentation for a definition of "drop complete", and how it differs from "drag complete" (`com.smartgwt.client.widgets.DragCompleteHandler`).
      Specified by:
        `addDropCompleteHandler` in interface `HasDropCompleteHandlers`
      Parameters:
        `handler` - the DropCompleteHandler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### addDragCompleteHandler

          public com.google.gwt.event.shared.HandlerRegistration addDragCompleteHandler(DragCompleteHandler handler)

      Add a `com.smartgwt.client.widgets.DragCompleteHandler`. See that class's documentation for a definition of "drag complete", and how it differs from "drop complete" (`com.smartgwt.client.widgets.DropCompleteHandler`).
      Specified by:
        `addDragCompleteHandler` in interface `HasDragCompleteHandlers`
      Parameters:
        `handler` - the DropCompleteHandler
      Returns:
        `HandlerRegistration` used to remove this handler

    - #### getFieldAlignments

          public Alignment[] getFieldAlignments()

      Description copied from interface: `DataBoundComponent`
      Returna an array of field alignments for this grid
      Specified by:
        `getFieldAlignments` in interface `DataBoundComponent`
      Returns:
        array of Alignments

    - #### getDeepCloneOnEdit

          public java.lang.Boolean getDeepCloneOnEdit()

      Description copied from interface: `DataBoundComponent`
      Before we start editing values in this DataBoundComponent, should we perform a deep clone of the underlying values. See `DataSource.getDeepCloneOnEdit()` for details of what this means.

      If this value is not explicitly set, it defaults to the DataSource `deepCloneOnEdit` value. This value can also be overridden per-field with `DataSourceField.setDeepCloneOnEdit(java.lang.Boolean)`.

      Like the other `deepCloneOnEdit` settings, this flag only has an effect if you are editing a values object that contains nested objects or arrays, using `Canvas.setDataPath(java.lang.String)`

      Specified by:
        `getDeepCloneOnEdit` in interface `DataBoundComponent`

    - #### setDeepCloneOnEdit

          public ColumnTree setDeepCloneOnEdit(java.lang.Boolean deepCloneOnEdit)

      Description copied from interface: `DataBoundComponent`
      Before we start editing values in this DataBoundComponent, should we perform a deep clone of the underlying values. See `DataSource.getDeepCloneOnEdit()` for details of what this means.

      If this value is not explicitly set, it defaults to the DataSource `deepCloneOnEdit` value. This value can also be overridden per-field with `DataSourceField.setDeepCloneOnEdit(java.lang.Boolean)`.

      Like the other `deepCloneOnEdit` settings, this flag only has an effect if you are editing a values object that contains nested objects or arrays, using `Canvas.setDataPath(java.lang.String)`

      Specified by:
        `setDeepCloneOnEdit` in interface `DataBoundComponent`
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### setFields

          public ColumnTree setFields(com.google.gwt.core.client.JavaScriptObject... fields)

      Description copied from interface: `DataBoundComponent`
      Field setter variant (alternative to `setFields(FormItem...)`, `setFields(ListGridField...)`, etc.) that will accept an array of JavaScriptObject, rather than an array of SmartGWT Java wrappers of the field class type (e.g. `FormItem`, `ListGridField`, etc.) This is an advanced method and only for cases where you have the JavaScriptObject for each field but want to avoid having to create each associated SmartGWT Java wrapper.

      Note: use `toArray()` to create a Java array of JavaScriptObject if you only have the array itself as a single JavaScriptObject.

      Specified by:
        `setFields` in interface `DataBoundComponent`
      Parameters:
        `fields` - the component fields
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getFieldsAsJavaScriptObjects

          public com.google.gwt.core.client.JavaScriptObject[] getFieldsAsJavaScriptObjects()

      Description copied from interface: `DataBoundComponent`
      Return the fields as JavaScriptObjects rather than as SmartGWT Java wrappers of the field class type (e.g. `FormItem`, `ListGridField`, etc.) This avoids building the SmartGWT Java wrappers for the fields in situations where they aren't needed - and for FormItems in particular - where there may not be enough information to determine the correct subclass, such as before the SmartClient instance underlying the `DynamicForm` has been created.
      Specified by:
        `getFieldsAsJavaScriptObjects` in interface `DataBoundComponent`
      Returns:
        the component fields

    - #### getFieldCount

          public int getFieldCount()

      Description copied from interface: `DataBoundComponent`
      Return the number of fields.
      Specified by:
        `getFieldCount` in interface `DataBoundComponent`
      Returns:
        the number of fields

    - #### transferRecords

          public void transferRecords(Record[] records,
                                      Record targetRecord,
                                      java.lang.Integer index,
                                      Canvas sourceWidget,
                                      TransferRecordsCallback callback)

      Description copied from interface: `DataBoundComponent`
      Transfer a list of `Record`s from another component (does not have to be a databound component) into this component. This method is only applicable to list-type components, such as `ListGrid` or `com.smartgwt.client.widgets.tile.TileGridTileGrid`. Notably, it does not apply to `TreeGrid`; the equivalent for treeGrids is `transferNodes`.

      This method implements the automatic drag-copy and drag-move behaviors of components like `ListGrid`, and calling it is equivalent to completing a drag and drop of the `dropRecords` (the default record drop behavior is simply to call `transferRecords()`, passing in the dropped nodes)

      Note that this method is asynchronous - it may need to perform server turnarounds to prevent duplicates in the target component's data. If you wish to be notified when the transfer process has completed, you can either pass a non-null callback to this method or add a `DropCompleteHandler` to this component.

      See also `transferSelectedData()`

      Specified by:
        `transferRecords` in interface `DataBoundComponent`
      Parameters:
        `records` - Recordss to transfer to this component
        `targetRecord` - The target record (eg, of a drop interaction), for context
        `index` - Insert point relative to the target record for the transferred records
        `sourceWidget` - The databound or non-databound component from which the records are to be transferred.
        `callback` - optional TransferRecordsCallback to be fired when the transfer process has completed (pass null if your code does not need to be called back). The callback will be passed the list of records actually transferred to this component

    - #### setDragDataCustomizer

          public ColumnTree setDragDataCustomizer(DragDataCustomizer customizer)

      During a drag-and-drop interaction, this method returns the set of records being dragged out of the component. In the default implementation, this is the list of currently selected records.

      This method is consulted by `willAcceptDrop()`.

      Parameters:
        `DragDataCustomizer` - customizer
      Returns:
        `DataBoundComponent` instance, for chaining setter calls

    - #### getSort

          public SortSpecifier[] getSort()

      Description copied from interface: `DataBoundComponent`
      Returns the current `SortSpecifiers` for this component. Will return null if this component has never been sorted, or the underlying SmartClient widget does not exist.
      Specified by:
        `getSort` in interface `DataBoundComponent`
      Returns:
        current sort specifiers for this component (null if unsorted or no SC widget)

    - #### setSort

          public ColumnTree setSort(SortSpecifier... sortSpecifiers)

      Description copied from interface: `DataBoundComponent`
      Sort the component on one or more fields.

      Pass in an array of `SortSpecifier`s to have the component's data sorted by the fields in each `specifier.property` and in the directions specified. The component can be sorted by any combination of fields, including fields specified in the fields array and `unused fields from the underlying dataSource`, if there is one.

      If setSort() is called on a component which doesn't yet have a SmartClient widget, the widget will be created. If `autoFetchData` is set and a `DataSource` has been set, this will result in data being fetched.

      Specified by:
        `setSort` in interface `DataBoundComponent`
      Parameters:
        `sortSpecifiers` - Array of `SortSpecifier` objects

    - #### setLogicalStructure

          public com.smartgwt.logicalstructure.core.LogicalStructureObject setLogicalStructure(com.smartgwt.logicalstructure.widgets.grid.ColumnTreeLogicalStructure s)

      Setter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.

    - #### getLogicalStructure

          public com.smartgwt.logicalstructure.core.LogicalStructureObject getLogicalStructure()

      Getter implementing the `LogicalStructure` interface, which supports Eclipse's logical structure debugging facility.
      Specified by:
        `getLogicalStructure` in interface `LogicalStructure`
      Overrides:
        `getLogicalStructure` in class `Layout`