Class EmptyMapProvider

Provides an empty map implementation that displays no content, useful for scenarios requiring a blank map canvas or as a placeholder provider.

Inheritance
System.Object
EmptyMapProvider
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Telerik.WinControls.UI
Assembly: Telerik.WinControls.RadMap.dll

Syntax

public class EmptyMapProvider : IMapProvider, ICloneable

Constructors

EmptyMapProvider()

Declaration
public EmptyMapProvider()

Properties

Id

Gets the unique identifier for this empty map provider, always returning "Empty".

Declaration
public string Id { get; }
Property Value
System.String

Implements

Initialized

Gets a value indicating whether this empty map provider has completed its initialization process.

Declaration
public bool Initialized { get; protected set; }
Property Value
System.Boolean

MaxZoomLevel

Gets or sets the maximum zoom level supported by this empty map provider.

Declaration
public int MaxZoomLevel { get; set; }
Property Value
System.Int32

Implements

MinZoomLevel

Gets or sets the minimum zoom level supported by this empty map provider.

Declaration
public int MinZoomLevel { get; set; }
Property Value
System.Int32

Implements

Methods

Clone()

Creates a deep copy of this EmptyMapProvider instance with identical configuration settings.

Declaration
public object Clone()
Returns
System.Object

A new EmptyMapProvider object that is a copy of this instance.
Implements
System.ICloneable.Clone()

GetContent(IMapViewport)

Retrieves the visual elements for the current viewport, always returning an empty collection as this provider displays no content.

Declaration
public IEnumerable<MapVisualElement> GetContent(IMapViewport viewport)
Parameters
IMapViewport viewport

The IMapViewport defining the current view area and settings.
Returns
System.Collections.Generic.IEnumerable<MapVisualElement>

An empty enumerable collection of MapVisualElement objects.
Implements

GetSupportedViews()

Gets the list of supported map views for this provider, always returning null as no views are supported.

Declaration
public List<MapViewInfo> GetSupportedViews()
Returns
System.Collections.Generic.List<MapViewInfo>

Always returns null since empty provider supports no specific views.
Implements

Initialize()

Initializes the empty map provider, marking it as ready and raising the initialization complete event.

Declaration
public void Initialize()
Implements

OnInitializationComplete()

Raises the InitializationComplete event when provider initialization is successfully completed.

Declaration
protected virtual void OnInitializationComplete()

OnInitializationError()

Raises the InitializationError event when an error occurs during provider initialization.

Declaration
protected virtual void OnInitializationError()

OnProviderUpdated()

Raises the ProviderUpdated event when provider content changes.

Declaration
protected virtual void OnProviderUpdated()

SetView(MapViewInfo)

Sets the active map view for this provider, currently not implemented for empty provider.

Declaration
public void SetView(MapViewInfo view)
Parameters
MapViewInfo view

The MapViewInfo representing the desired map view.
Implements

ViewportChanged(IMapViewport, ViewportChangeAction)

Responds to viewport changes by initializing the provider if not already initialized, but performs no content operations.

Declaration
public void ViewportChanged(IMapViewport viewport, ViewportChangeAction action)
Parameters
IMapViewport viewport

The IMapViewport representing the current view settings and visible area.
ViewportChangeAction action

The ViewportChangeAction indicating the type of viewport change that occurred.
Implements

Events

InitializationComplete

Occurs when the provider initialization process is completed successfully.

Declaration
public event EventHandler InitializationComplete
Event Type
System.EventHandler

Implements

InitializationError

Occurs when an error is encountered during the provider initialization process.

Declaration
public event InitializationErrorEventHandler InitializationError
Event Type
InitializationErrorEventHandler

Implements

ProviderUpdated

Occurs when the provider content is updated, though empty provider never updates its content.

Declaration
public event EventHandler ProviderUpdated
Event Type
System.EventHandler

Implements

Extension Methods