org.eclipse.gef4.layout.listeners

Class IContextListener.Stub

java.lang.Object

org.eclipse.gef4.layout.listeners.IContextListener.Stub

All Implemented Interfaces:

IContextListener

Enclosing interface:

IContextListener

public static class IContextListener.Stub
extends java.lang.Object
implements IContextListener

A stub implementation of the IContextListener which contains empty implementations of the specified methods.

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.gef4.layout.listeners.IContextListener

IContextListener.Stub

Constructor Summary

Constructors

Constructor and Description
Stub()

Method Summary

Modifier and Type	Method and Description
void	backgroundEnableChanged(ILayoutContext context) This method is called whenever background layout is enabled or disabled in a layout context.
boolean	boundsChanged(ILayoutContext context) This method is called whenever the bounds available in a layout context change.
boolean	pruningEnablementChanged(ILayoutContext context) This method is called whenever graph pruning is enabled or disabled in a layout context.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Stub

public Stub()

Method Detail

boundsChanged

public boolean boundsChanged(ILayoutContext context)

Description copied from interface: IContextListener

This method is called whenever the bounds available in a layout context change. If true is returned, it means that the receiving listener has intercepted this event. Intercepted events will not be passed to the rest of the listeners. If the event is not intercepted by any listener, ILayoutAlgorithm.applyLayout(boolean) will be called on the context's main algorithm.

Specified by:

boundsChanged in interface IContextListener

Parameters:

context - the layout context that fired the event

Returns:

true if no further operations after this event are required

backgroundEnableChanged

public void backgroundEnableChanged(ILayoutContext context)

Description copied from interface: IContextListener

This method is called whenever background layout is enabled or disabled in a layout context. If the receiving listener is related to a layout algorithm that performs layout in reaction to events, it should turn automatic flush of changes on or off. Also, eventual additional threads responsible for layout should be stopped or started accordingly.

Specified by:

backgroundEnableChanged in interface IContextListener

Parameters:

context - the layout context that fired the event

pruningEnablementChanged

public boolean pruningEnablementChanged(ILayoutContext context)

Description copied from interface: IContextListener

This method is called whenever graph pruning is enabled or disabled in a layout context. If true is returned, it means that the receiving listener has intercepted this event. Intercepted events will not be passed to the rest of the listeners. If the event is not intercepted by any listener, ILayoutAlgorithm.applyLayout(boolean) will be called on the context's main algorithm.

Specified by:

pruningEnablementChanged in interface IContextListener

Parameters:

context - the layout context that fired the event

Returns:

true if no further operations after this event are required