Definition
Namespace:Telerik.WinControls.UI
Assembly:Telerik.WinControls.UI.dll
Syntax:
public class TreeViewDragDropService : RadDragDropService, IDisposable, INotifyPropertyChanged, ICustomTypeDescriptor, IMessageListenerInheritance: objectDisposableObjectRadObjectRadServiceRadDragDropServiceTreeViewDragDropService...
Derived Classes:
Implements:
Inherited Members
Constructors
Properties
public Color DropHintColor { get; set; }protected virtual bool IsCopyingNodes { get; }protected RadTreeViewElement Owner { get; }Gets or sets a value indicating whether drag hint should be shown.
public bool ShowDragHint { get; set; }true if [show drag hint]; otherwise, false.
Gets or sets a value indicating whether show drop hint should be shown.
public bool ShowDropHint { get; set; }true if [show drop hint]; otherwise, false.
Methods
protected virtual bool CancelPreviewDragDrop(RadDropEventArgs e)protected virtual bool CanDragOver(DropPosition dropPosition, TreeNodeElement targetNodeElement)Determines whether the service may be started. Validation is as follows:
- Check whether Enabled is true.
- Check the context through IsContextValid method. An exception is thrown if context is invalid.
- Checks the current state - it should be Initial or Stopped.
Creates a new tree node in the target RadTreeView using the information from the source tree.
protected virtual RadTreeNode CreateTreeNode(RadTreeNode sourceTreeNode)The source tree node.
Returns:A new instance of RadTreeNode if successfull.
protected virtual void DisposeHint()Releases managed resources by clearing the property store and disposing value animators to prevent memory leaks.
protected override void DisposeManagedResources()Overrides:
protected virtual List<RadTreeNode> GetDraggedNodes(RadTreeNode draggedNode)List<RadTreeNode>
protected DropPosition GetDropPosition(Point dropLocation, TreeNodeElement targetNodeElement)protected virtual List<RadTreeNode> GetSelectedNodes(RadTreeNode draggedNode)List<RadTreeNode>
protected override void HandleMouseMove(Point mousePosition)Overrides:
public void HideHintWindow()protected override bool IsDropTargetValid(ISupportDrop dropTarget)Overrides:
protected override void OnPreviewDragDrop(RadDropEventArgs e)Overrides:
protected override void OnPreviewDragHint(PreviewDragHintEventArgs e)Overrides:
protected virtual void OnPreviewDragHintWithDropPosition(TreeViewPreviewDragHintEventArgs e)protected override void OnPreviewDragOver(RadDragOverEventArgs e)Overrides:
Notifies that the service has been successfully started. Allows inheritors to perform some additional logic upon start.
protected override void OnStarted()Overrides:
Notifies that a running operation has stopped. Allows inheritors to perform some additional logic upon stop.
protected override void OnStopped()Overrides:
Notifies that a stop request has occured. Cancelable.
protected override void OnStopping(RadServiceStoppingEventArgs e)Overrides:
protected virtual void PerformDragDrop(Point dropLocation, TreeNodeElement targetNodeElement, List<RadTreeNode> draggedNodes)protected virtual void PerformDragDropCore(DropPosition position, RadTreeNode targetNode, List<RadTreeNode> draggedNodes)Performs the core Start logic.
protected override void PerformStart()Overrides:
Stops the service. Performs the core logic.
protected override void PerformStop()Overrides:
protected virtual void PrepareDragHint(TreeNodeElement nodeElement)public void ShowHintWindow()