Documentation

Class DraggingService

Represents the Dragging service responsible for dragging operations in Diagram.

Inheritance
System.Object
GraphServiceBase
DraggingService
Inherited Members
Namespace: Telerik.Windows.Diagrams.Core
Assembly: Telerik.Windows.Diagrams.Core.dll

Syntax

public class DraggingService : GraphServiceBase, IDraggingService

Constructors

DraggingService(IGraphInternal)

Initializes a new instance of the DraggingService class.

Declaration
public DraggingService(IGraphInternal graph)
Parameters
IGraphInternal graph

The graph.

Properties

DraggingModels

Gets the currently dragging models if any.

Declaration
public IEnumerable<IDiagramItem> DraggingModels { get; }
Property Value
System.Collections.Generic.IEnumerable<IDiagramItem>

The dragging models.
Implements

DragOverShape

Gets the currently drag over shape.

Declaration
public IDragDropAware DragOverShape { get; }
Property Value
IDragDropAware

The drag over shape.
Implements

IsDragging

Determines whether there's a dragging operation in progress.

Declaration
public bool IsDragging { get; }
Property Value
System.Boolean

Implements

Methods

CanDrag(Point)

Determines whether you can drag to the new point.

Declaration
public virtual bool CanDrag(Point newPoint)
Parameters
System.Windows.Point newPoint

The new point.
Returns
System.Boolean

Implements

CompleteDrag()

Completes the drag.

Declaration
public virtual void CompleteDrag()
Implements

CreateAsyncDragCommand(IUndoRedoService, IEnumerable<IDiagramItem>)

Creates the async drag command which has to be completed at a later time. This method is used both by the Nudge keyboard handler and by the dragging tool.

Declaration
public CompositeAsyncStateCommand CreateAsyncDragCommand(IUndoRedoService undoRedoService, IEnumerable<IDiagramItem> items)
Parameters
IUndoRedoService undoRedoService

The undo-redo service.
System.Collections.Generic.IEnumerable<IDiagramItem> items

The items which are affected.
Returns
CompositeAsyncStateCommand

The undoable async command.
Implements

Drag(Point)

Drags to the specified new point.

Declaration
public virtual void Drag(Point newPoint)
Parameters
System.Windows.Point newPoint

The new point.
Implements

InitializeDrag(Point)

Initializes the drag.

Declaration
public virtual void InitializeDrag(Point point)
Parameters
System.Windows.Point point

The drag start point.
Implements

StartDrag(IEnumerable<IDiagramItem>, Point)

Starts the drag.

Declaration
public virtual bool StartDrag(IEnumerable<IDiagramItem> models, Point currentPoint)
Parameters
System.Collections.Generic.IEnumerable<IDiagramItem> models

The models.
System.Windows.Point currentPoint

The current point.
Returns
System.Boolean

Implements

Events

CompleteDragging

Occurs on drag complete.

Declaration
public event EventHandler<PositionChangedEventArgs> CompleteDragging
Event Type
System.EventHandler<PositionChangedEventArgs>

Implements

DragEnter

Occurs on drag enter.

Declaration
public event EventHandler<DragItemsEventArgs> DragEnter
Event Type
System.EventHandler<DragItemsEventArgs>

Implements

Dragging

Occurs when dragging.

Declaration
public event EventHandler<PositionChangedEventArgs> Dragging
Event Type
System.EventHandler<PositionChangedEventArgs>

Implements

DragLeave

Occurs on drag leave.

Declaration
public event EventHandler<DragItemsEventArgs> DragLeave
Event Type
System.EventHandler<DragItemsEventArgs>

Implements

Drop

Occurs on drop.

Declaration
public event EventHandler<DragItemsEventArgs> Drop
Event Type
System.EventHandler<DragItemsEventArgs>

Implements

StartDragging

Occurs on drag start.

Declaration
public event EventHandler<CancelingPositionChangedEventArgs> StartDragging
Event Type
System.EventHandler<CancelingPositionChangedEventArgs>

Implements

Extension Methods