LayerCollection Class

Container class managing the set of all available ILayer objects. Especially the visibility and selection property is managed by this class.

Inheritance Hierarchy

Namespace: Ptv.XServer.Controls.Map
Assembly: Ptv.XServer.Controls.Map (in Ptv.XServer.Controls.Map.dll) Version: 1.7.10.0

Syntax

public class LayerCollection : ObservableCollection, 
	ICloneable, IDisposable

Public Class LayerCollection
	Inherits ObservableCollection
	Implements ICloneable, IDisposable

public ref class LayerCollection : public ObservableCollection, 
	ICloneable, IDisposable

type LayerCollection =  
    class
        inherit ObservableCollection
        interface ICloneable
        interface IDisposable
    end

The LayerCollection type exposes the following members.

Constructors

	Name	Description
	LayerCollection	Initializes a new instance of the LayerCollection class.

Properties

	Name	Description
	ExclusiveSelectableLayer	Gets or sets the layer which is the one-and-only selectable layer.
	Item	Index operator for the set of layers, accepting the layer name for comparison.
	LayerSettings	Gets or sets the interface, which is used when the settings of a layer have to be shown. Due to the fact, that this class does not know the styles of the GUI, the dialogs are deferred to the client application implementing such an ILayerSettings-interface.

Methods

	Name	Description
	Clone	Creates a new object that is a copy of the current instance.
	Dispose	Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
	InsertBefore	Insert a layer before another layer.
	IsSelectable	Retrieves if the layer is selectable taking into account whether it is exclusively selectable.
	IsSelectableBase	Retrieves if the layer is selectable without taking into account whether it is exclusively selectable.
	IsVisible	Retrieves for a layer whether it is visible.
	Register	Connect a MapView-object to the called LayerCollection. In return, only visible layers are connected to the Map object.
	SetSelectable	Sets the selectable flag of the layer, if the layer is not exclusive selectable.
	SetVisible	Set the visibility of the specified layer.
	ShowSettingsDialog	Activates the settings dialog, if an ILayerSettings-interface is set by the client application.
	Unregister	Disconnect a MapView-object from the called LayerCollection. In return, all visible layers are disconnected from the Map object.

Events

	Name	Description
	LayerAdded	Callback for indicating the insertion of a new layer to this collection. This is useful when layer specific callbacks have to be set, for example to indicate a layer's property change.
	LayerRemoved	Callback for indicating the removal of a layer from this collection. It becomes important when layer specific callbacks were set in LayerAdded, and have to be removed now.
	LayerSelectabilityChanged	Callback for indicating the selectability changing.
	LayerVisibilityChanged	Callback for indicating the visibility changing.

Extension Methods

	Name	Description
	InsertXMapBaseLayers	Inserts the xMapServer base layers, i.e. the background layers for areas like forests, rivers, population areas, et al, and their corresponding labels. (Defined by XMapLayerFactory.)
	RemoveXMapBaseLayers	Removes all xMapServer base layers. (Defined by XMapLayerFactory.)
	UpdateXMapCoprightText	Updates the copyright text for the XMapServer layers. (Defined by XMapLayerFactory.)
	UpdateXMapMaxZoom	Updates the maximum zoom for the XMapServer layers. (Defined by XMapLayerFactory.)
	UpdateXMapMinZoom	Updates the minimum zoom for the XMapServer layers. (Defined by XMapLayerFactory.)
	UpdateXMapProfiles	Updates the profiles to be used in xMap Server requests. (Defined by XMapLayerFactory.)