com.esri.arcgis.carto
Interface IActiveViewEvents

All Superinterfaces:

EventListener, Serializable

All Known Implementing Classes:

AnimationExtension, ColorCorrectionDockWin, ControlsMapZoomToolControl, ControlsPageZoomToolControl, CreateFeatureDockWin, DataGraphTElement, DataGraphWindow, DynamicDisplay, Editor, EngineInkEnvironment, FindWindowUI, GlobeDisplay, HistoryViewerWindow, IActiveViewEventsAdapter, IActiveViewEventsProxy, LabelCache, LabelEngine, Legend, MapFrame, MapInsetWindow, MetadataViewWindow, OverviewWindow, PixelInspectionDockWin, RasterToolsDockWin, RealTimeFeedManager, ReportSelection, SceneGraph, TableProperties, TADynamicDisplayRefreshController, TOCCatalogView, TOCDisplayView, TOCSelectionView, UnplacedAnnotationWindow

public interface IActiveViewEvents
extends EventListener, Serializable

Provides access to events that occur when the state of the active view changes.

When To Use

Use this interface to listen for specific events related to the active view, such as AfterDraw and SelectionChanged. Many CoClasses implement this interface and each fires events differently. For example, the Map object does not fire the FocusMapChanged event, whereas the PageLayout object does. Similarly, the Map object fires the ItemDeleted event when a layer is removed from the Map and the PageLayout fires the same event when elements such as a map frame or graphic are deleted.

Be aware of the specific object's events to which you are listening. For example, writing code to listen for the SelectionChanged event on just the FocusMap object will not fire an event by changing the selection in layout view. Also, if the focus map changes you must reset the client.

The AfterItemDraw event will only be fired when the IViewManager::VerboseEvents property is set to True. By default, this property is set to False.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Method Summary

void	afterDraw(IActiveViewEventsAfterDrawEvent theEvent) Fired after the specified phase is drawn.
void	afterItemDraw(IActiveViewEventsAfterItemDrawEvent theEvent) Fired after an individual view item is drawn.
void	contentsChanged(IActiveViewEventsContentsChangedEvent theEvent) Fired when the contents of the view changes.
void	contentsCleared(IActiveViewEventsContentsClearedEvent theEvent) Fired when the contents of the view is cleared.
void	focusMapChanged(IActiveViewEventsFocusMapChangedEvent theEvent) Fired when a new map is made active.
void	itemAdded(IActiveViewEventsItemAddedEvent theEvent) Fired when an item is added to the view.
void	itemDeleted(IActiveViewEventsItemDeletedEvent theEvent) Fired when an item is deleted from the view.
void	itemReordered(IActiveViewEventsItemReorderedEvent theEvent) Fired when a view item is reordered.
void	selectionChanged(IActiveViewEventsSelectionChangedEvent theEvent) Call this function to fire the selection changed event.
void	spatialReferenceChanged(IActiveViewEventsSpatialReferenceChangedEvent theEvent) Fired when the spatial reference is changed.
void	viewRefreshed(IActiveViewEventsViewRefreshedEvent theEvent) Fired when view is refreshed before draw happens.

Method Detail

contentsChanged

void contentsChanged(IActiveViewEventsContentsChangedEvent theEvent)
                     throws IOException,
                            AutomationException

Fired when the contents of the view changes.

Remarks

The Map object fires this event when a new document is loaded. Adding a new layer to a Map does not trigger this event.

The PageLayout object fires the event when IGraphicsContainer::DeleteAllElements in called and when a new document is loaded.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

See Also:

IActiveView.contentsChanged()

contentsCleared

void contentsCleared(IActiveViewEventsContentsClearedEvent theEvent)
                     throws IOException,
                            AutomationException

Fired when the contents of the view is cleared.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

itemAdded

void itemAdded(IActiveViewEventsItemAddedEvent theEvent)
               throws IOException,
                      AutomationException

Fired when an item is added to the view.

Remarks

The Map fires the event every time a new layer is added.

The PageLayout fires this event whenever a new element is added to the layout. Elements include not only graphics but data frames as well.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

itemDeleted

void itemDeleted(IActiveViewEventsItemDeletedEvent theEvent)
                 throws IOException,
                        AutomationException

Fired when an item is deleted from the view.

Remarks

The PageLayout object fires this event whenever elements are deleted from the layout.

The Map object fires this event when a layer is removed.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

itemReordered

void itemReordered(IActiveViewEventsItemReorderedEvent theEvent)
                   throws IOException,
                          AutomationException

Fired when a view item is reordered.

Remarks

The Map objects only fire this event whenever IMap::MoveLayer is called. In the ArcMap application, this occurs when you reorder layers in the table of contents. The Map will also fire this event when new layers are added.

The PageLayout object fires this event when changing the order of graphics. For example, IGraphicsContainer::BringToFront, PutElementOrder, SendToBack, SendBackward, and BringForward all fire this event. These functions are on ArcMap's Drawing menu under the Order pull right menu. Although the Map object is also a graphics container, it does not fire this event when its graphics are reordered.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

selectionChanged

void selectionChanged(IActiveViewEventsSelectionChangedEvent theEvent)
                      throws IOException,
                             AutomationException

Call this function to fire the selection changed event.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

viewRefreshed

void viewRefreshed(IActiveViewEventsViewRefreshedEvent theEvent)
                   throws IOException,
                          AutomationException

Fired when view is refreshed before draw happens.

Description

Method that gets fired in response to IActiveView::Refresh and IActiveView::PartialRefresh.

Remarks

This event is useful in the case where you're watching for something to change in the view and there aren't any specific events for that change (e.g. ContentsChanged, ItemAdded). You can always listen for this method as a last resort. Care must be taken however to be very efficient in your implementation of this event because it will be called quite often.

The event parameters directly coincide with the arguments to IActiveView::PartialRefresh. For additional information about the arguments, see the help for that method.

If the event object connects to both the layout and a map, then the view parameter tells you which object initiated the event.

In an implementation of this method you typically want to check the phase and respond to only one. Otherwise, your code will execute multiple times per drawing sequence.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

afterDraw

void afterDraw(IActiveViewEventsAfterDrawEvent theEvent)
               throws IOException,
                      AutomationException

Fired after the specified phase is drawn.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

afterItemDraw

void afterItemDraw(IActiveViewEventsAfterItemDrawEvent theEvent)
                   throws IOException,
                          AutomationException

Fired after an individual view item is drawn. Example: view items include layers in a map or elements in a page layout.

Remarks

AfterItemDraw can be used to execute after each individual item has drawn. Event firing can be an expensive operation (time consuming) when there are many layers in a map, however. As a result, the AfterItemDraw event is only fired when the IViewManger::VerboseEvents property is set to True. By default this property is False.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

focusMapChanged

void focusMapChanged(IActiveViewEventsFocusMapChangedEvent theEvent)
                     throws IOException,
                            AutomationException

Fired when a new map is made active.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

spatialReferenceChanged

void spatialReferenceChanged(IActiveViewEventsSpatialReferenceChangedEvent theEvent)
                             throws IOException,
                                    AutomationException

Fired when the spatial reference is changed.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Parameters:

theEvent - The event

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.