Class TreeGridColumnDragDropController

Provides the base implementation for column drag-and-drop operations in SfTreeGrid.

Inheritance
System.Object
TreeGridColumnDragDropController
Implements
System.IDisposable
Namespace: Syncfusion.UI.Xaml.TreeGrid
Assembly: Syncfusion.SfGrid.UWP.dll
Syntax
public class TreeGridColumnDragDropController : Object, IDisposable
Remarks

It provides the set of public properties and virtual method to customize the drag-and-drop operation.

Constructors

TreeGridColumnDragDropController(SfTreeGrid)

Initializes a new instance of TreeGridColumnDragDropController class.

Declaration
public TreeGridColumnDragDropController(SfTreeGrid TreeGrid)
Parameters
Type Name Description
SfTreeGrid TreeGrid

The SfTreeGrid.

Properties

PopupContentControl

Gets the PopupContentControl for drag-and-drop operation.

Declaration
protected PopupContentControl PopupContentControl { get; }
Property Value
Type Description
PopupContentControl

PopupMaxHeight

Gets or sets the maximum height constraint of the popup for drag-and-drop operation.

Declaration
public double PopupMaxHeight { get; set; }
Property Value
Type Description
System.Double

The maximum height constraint of the popup.

PopupMaxWidth

Gets or sets the maximum width constraint of the popup for drag-and-drop operation.

Declaration
public double PopupMaxWidth { get; set; }
Property Value
Type Description
System.Double

The maximum width constraint of the popup.

PopupMinHeight

Gets or sets the minimum height constraint of the popup for drag-and-drop operation.

Declaration
public double PopupMinHeight { get; set; }
Property Value
Type Description
System.Double

The minimum height constraint of the popup.

PopupMinWidth

Gets or sets the minimum width constraint of the popup for drag-and-drop operation.

Declaration
public double PopupMinWidth { get; set; }
Property Value
Type Description
System.Double

The minimum width constraint of the popup.

Methods

CreatePopupContent(TreeGridColumn)

Creates the popup content for the specified column.

Declaration
protected virtual UIElement CreatePopupContent(TreeGridColumn column)
Parameters
Type Name Description
TreeGridColumn column

The corresponding column to create popup content.
Returns
Type Description
Windows.UI.Xaml.UIElement

Returns the for the popup.

Dispose()

Releases all the resources used by the TreeGridColumnDragDropController class.

Declaration
public void Dispose()

Dispose(Boolean)

Disposes all the resources used by the TreeGridColumnDragDropController class.

Declaration
protected virtual void Dispose(bool isDisposing)
Parameters
Type Name Description
System.Boolean isDisposing

Indicates whether the call is from Dispose method or from a finalizer.

GetHeaderRowRect()

Gets the display rectangle for the header row in SfTreeGrid.

Declaration
protected Rect GetHeaderRowRect()
Returns
Type Description
Windows.Foundation.Rect

The display rectangle for the header row.

GetPopupRect()

Gets the display rectangle for the popup.

Declaration
protected Rect GetPopupRect()
Returns
Type Description
Windows.Foundation.Rect

The display rectangle for the popup.

OnColumnHiddenChanged(TreeGridColumn)

Invoked when the property value changes.

Declaration
protected virtual void OnColumnHiddenChanged(TreeGridColumn column)
Parameters
Type Name Description
TreeGridColumn column

The corresponding column on which the property value changes occurs.

OnPopupContentDropped(Point)

Invoked when the popup content dropped on SfTreeGrid.

Declaration
protected virtual void OnPopupContentDropped(Point pointOverGrid)
Parameters
Type Name Description
Windows.Foundation.Point pointOverGrid

Indicates whether the mouse point over on SfTreeGrid.

OnPopupContentPositionChanged(Double, Double, Point)

Invoked when the position of popup content is changed in SfTreeGrid.

Declaration
protected virtual void OnPopupContentPositionChanged(double HorizontalDelta, double VerticalDelta, Point mousePointOverGrid)
Parameters
Type Name Description
System.Double HorizontalDelta

The corresponding horizontal distance of the popup content position changes.
System.Double VerticalDelta

The corresponding vertical distance of the popup content position changes.
Windows.Foundation.Point mousePointOverGrid

Indicates whether the mouse point is hover on the TreeGrid.

PointToGridRegion(Point)

Gets the corresponding at the specified point co-ordinate value.

Declaration
public virtual TreeGridRegion PointToGridRegion(Point point)
Parameters
Type Name Description
Windows.Foundation.Point point

The position to get the corresponding tree grid region.
Returns
Type Description
TreeGridRegion

Returns the corresponding at the specified point.

PopupContentDroppedOnGrid(Point)

Invoked when the popup content dropped on SfTreeGrid.

Declaration
protected virtual void PopupContentDroppedOnGrid(Point point)
Parameters
Type Name Description
Windows.Foundation.Point point

The corresponding position where the popup content is dropped in SfTreeGrid.

PopupContentDroppedOnHeaderRow(Int32, Int32)

Invoked when the popup content is dropped on header row in SfTreeGrid.

Declaration
protected virtual void PopupContentDroppedOnHeaderRow(int oldIndex, int newColumnIndex)
Parameters
Type Name Description
System.Int32 oldIndex

The corresponding old index of the column before dropped the popup content on header row.
System.Int32 newColumnIndex

The new index of the column after dropped the popup content on header row.
Remarks

Override this method and customize the drag-and-drop interaction between columns in SfTreeGrid.

Implements

System.IDisposable

Extension Methods