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Java Source Code / Java Documentation » IDE Eclipse » ui workbench » org.eclipse.ui.commands

Source Cross Reference Class Diagram Java Document (Java Doc)

org.eclipse.ui.commands .AbstractHandler

All known Subclasses:   org.eclipse.ui.internal.handlers .LegacyHandlerProxy,  org.eclipse.ui.commands .ActionHandler,
AbstractHandler
abstract public class AbstractHandler extends org.eclipse.core.commands.AbstractHandler implements IHandler(Code)
This class is a partial implementation of IHandler. This abstract implementation provides support for handler listeners. You should subclass from this method unless you want to implement your own listener support. Subclasses should call AbstractHandler.fireHandlerChanged(HandlerEvent) when the handler changes. Subclasses should also override AbstractHandler.getAttributeValuesByName if they have any attributes.
since:
   3.0
See Also:   org.eclipse.core.commands.AbstractHandler

Method Summary
public void addHandlerListener(org.eclipse.ui.commands.IHandlerListener handlerListener)

public void dispose()
     The default implementation does nothing.
public Object execute(ExecutionEvent event)

protected void fireHandlerChanged(HandlerEvent handlerEvent)
     Fires an event to all registered listeners describing changes to this instance.
Parameters:
  handlerEvent - the event describing changes to this instance.
protected void fireHandlerChanged(org.eclipse.ui.commands.HandlerEvent handlerEvent)

public Map getAttributeValuesByName()
     This simply return an empty map.
final protected boolean hasListeners()
     Returns true iff there is one or more IHandlerListeners attached to this AbstractHandler.
public boolean isEnabled()

public boolean isHandled()

public void removeHandlerListener(org.eclipse.ui.commands.IHandlerListener handlerListener)


Method Detail
addHandlerListener
public void addHandlerListener(org.eclipse.ui.commands.IHandlerListener handlerListener)(Code)

See Also:   IHandler.addHandlerListener(IHandlerListener)

dispose
public void dispose()(Code)
The default implementation does nothing. Subclasses who attach listeners to other objects are encouraged to detach them in this method.
See Also:   org.eclipse.ui.commands.IHandler.dispose

execute
public Object execute(ExecutionEvent event) throws ExecutionException(Code)

fireHandlerChanged
protected void fireHandlerChanged(HandlerEvent handlerEvent)(Code)
Fires an event to all registered listeners describing changes to this instance.
Parameters:
  handlerEvent - the event describing changes to this instance. Must not benull.

fireHandlerChanged
protected void fireHandlerChanged(org.eclipse.ui.commands.HandlerEvent handlerEvent)(Code)

getAttributeValuesByName
public Map getAttributeValuesByName()(Code)
This simply return an empty map. The default implementation has no attributes.
See Also:   IHandler.getAttributeValuesByName

hasListeners
final protected boolean hasListeners()(Code)
Returns true iff there is one or more IHandlerListeners attached to this AbstractHandler. true iff there is one or more IHandlerListeners attached to thisAbstractHandler
since:
   3.1

isEnabled
public boolean isEnabled()(Code)

isHandled
public boolean isHandled()(Code)

removeHandlerListener
public void removeHandlerListener(org.eclipse.ui.commands.IHandlerListener handlerListener)(Code)

See Also:   IHandler.removeHandlerListener(IHandlerListener)

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