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VirtualizationService

Class

Simple data virtualization. Assuming containers are generated. Just hiding the items out of the viewport.

Definition

Namespace:Telerik.Windows.Diagrams.Core

Assembly:Telerik.WinControls.RadDiagram.dll

Syntax:

public class VirtualizationService : GraphServiceBase, IVirtualizationService

Inheritance: objectGraphServiceBaseVirtualizationService

Implements: IVirtualizationService

Inherited Members GraphServiceBase.Graph

Constructors

VirtualizationService(IGraphInternal)

Initializes a new instance of the VirtualizationService class.

public VirtualizationService(IGraphInternal graph)

Parameters:graphIGraphInternal

The graph.

Properties

IsBlocked

bool

When set to True, no virtualization or realization is done. When set to False, virtualization or serialization is processed normally.

public bool IsBlocked { get; set; }

Implements: IVirtualizationService.IsBlocked

Methods

ForceRealization()

Forces the realization of all items.

public void ForceRealization()

Implements: IVirtualizationService.ForceRealization()

Remarks:

When implementing a layout algorithm you need to call this method in order to take all the bounds into account.

IsInViewport(IDiagramItem)

Determines whether the item is in the viewport.

public bool IsInViewport(IDiagramItem item)

Parameters:itemIDiagramItem

The item.

Returns:

bool

Implements: IVirtualizationService.IsInViewport(IDiagramItem)

NotifyItemsChanged(NotifyCollectionChangedEventArgs)

Notifies items change.

public void NotifyItemsChanged(NotifyCollectionChangedEventArgs e)

Parameters:eNotifyCollectionChangedEventArgs

The NotifyCollectionChangedEventArgs instance containing the event data.

Implements: IVirtualizationService.NotifyItemsChanged(NotifyCollectionChangedEventArgs)

Realize(Rect)

Realizes the items contained in provided bounds and virtualizes the others.

public virtual void Realize(Rect enclosingBounds)

Parameters:enclosingBoundsRect

Items inside will be realized.

Implements: IVirtualizationService.Realize(Rect)

Virtualize()

Virtualizes this instance.

public void Virtualize()

Implements: IVirtualizationService.Virtualize()

Virtualize(IEnumerable<IDiagramItem>)

Virtualizes the specified items.

public virtual void Virtualize(IEnumerable<IDiagramItem> items)

Parameters:itemsIEnumerable<IDiagramItem>

The items.

Implements: IVirtualizationService.Virtualize(IEnumerable<IDiagramItem>)