SafeHandler (Net4j Utilities Documentation)

java.lang.Object

org.eclipse.core.commands.common.EventManager

org.eclipse.core.commands.AbstractHandler

org.eclipse.net4j.util.ui.handlers.SafeHandler

Alle implementierten Schnittstellen:: IHandler, IHandler2

Bekannte direkte Unterklassen:: LongRunningHandler

public abstract class SafeHandler extends AbstractHandler

Seit:: 3.4
Autor:: Eike Stepper, Christian W. Damus (CEA LIST)

Konstruktorübersicht

Konstruktoren

Konstruktor

Beschreibung

SafeHandler()
Methodenübersicht

Modifizierer und Typ

Methode

Beschreibung

Object

execute(ExecutionEvent event)

protected void

extractEventDetails(ExecutionEvent event)

Extracts details from the event that we may need later, for example on a background thread when the original execution context is no longer valid.

Command

getCommand()

ISelection

getSelection()

protected String

getText()

protected abstract Object

safeExecute(ExecutionEvent event)

void

setEnabled(Object evaluationContext)

protected boolean

updateSelection(ISelection selection)

Von Klasse geerbte Methoden org.eclipse.core.commands.AbstractHandler
addHandlerListener, dispose, fireHandlerChanged, hasListeners, isEnabled, isHandled, removeHandlerListener, setBaseEnabled

Von Klasse geerbte Methoden org.eclipse.core.commands.common.EventManager
addListenerObject, clearListeners, getListeners, isListenerAttached, removeListenerObject

Von Klasse geerbte Methoden java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Von Schnittstelle geerbte Methoden org.eclipse.core.commands.IHandler
getHandlerLabel

Konstruktordetails
- SafeHandler
  
  public SafeHandler()
Methodendetails
- getCommand
  
  public Command getCommand()
- getSelection
  
  public ISelection getSelection()
- execute
  
  public Object execute(ExecutionEvent event) throws ExecutionException
  
  Löst aus:
  
  ExecutionException
- setEnabled
  
  public void setEnabled(Object evaluationContext)
  
  Angegeben von:
  
  setEnabled in Schnittstelle IHandler2
  
  Setzt außer Kraft:
  
  setEnabled in Klasse AbstractHandler
- extractEventDetails
  
  protected void extractEventDetails(ExecutionEvent event)
  
  Extracts details from the event that we may need later, for example on a background thread when the original execution context is no longer valid.
- safeExecute
  
  protected abstract Object safeExecute(ExecutionEvent event) throws Exception
  
  Löst aus:
  
  Exception
- getText
  
  protected String getText()
- updateSelection
  
  protected boolean updateSelection(ISelection selection)