Package org.eclipse.ui.internal

Class AbstractEvaluationHandler

java.lang.Object

org.eclipse.core.commands.common.EventManager

org.eclipse.core.commands.AbstractHandler

org.eclipse.ui.internal.AbstractEnabledHandler

org.eclipse.ui.internal.AbstractEvaluationHandler

All Implemented Interfaces:

IHandler, IHandler2

Direct Known Subclasses:

ActivateEditorHandler, CloseAllHandler, CloseOthersHandler, ShowPartPaneMenuHandler, ShowViewMenuHandler

public abstract class AbstractEvaluationHandler
extends AbstractEnabledHandler

This internal class serves as a foundation for any handler that would like its enabled state controlled by core expressions and the IEvaluationService.

Since:

3.3

Constructor Summary

Constructors

Constructor	Description
AbstractEvaluationHandler()

Method Summary

Modifier and Type	Method	Description
void	dispose()	The default implementation does nothing.
protected abstract Expression	getEnabledWhenExpression()
protected IEvaluationService	getEvaluationService()
protected void	registerEnablement()

Methods inherited from class org.eclipse.ui.internal.AbstractEnabledHandler

isEnabled, setEnabled

Methods inherited from class org.eclipse.core.commands.AbstractHandler

addHandlerListener, fireHandlerChanged, hasListeners, isHandled, removeHandlerListener, setBaseEnabled, setEnabled

Methods inherited from class org.eclipse.core.commands.common.EventManager

addListenerObject, clearListeners, getListeners, isListenerAttached, removeListenerObject

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.core.commands.IHandler

execute, getHandlerLabel

Constructor Details

AbstractEvaluationHandler

public AbstractEvaluationHandler()

Method Details

getEvaluationService

protected IEvaluationService getEvaluationService()

registerEnablement

protected void registerEnablement()

getEnabledWhenExpression

protected abstract Expression getEnabledWhenExpression()

dispose

public void dispose()

Description copied from class: AbstractHandler

The default implementation does nothing. Subclasses who attach listeners to other objects are encouraged to detach them in this method.

Specified by:

dispose in interface IHandler

Overrides:

dispose in class AbstractHandler