Examples of org.eclipse.swt.widgets.Display.removeFilter()

org.eclipse.swt.widgets.Display.removeFilter()
Removes the listener from the collection of listeners who will be notified when an event of the given type occurs anywhere in a widget. The event type is one of the event constants defined in class SWT. @param eventType the type of event to listen for @param listener the listener which should no longer be notified when the event occurs @exception IllegalArgumentException
- ERROR_NULL_ARGUMENT - if the listener is null
@exception SWTException
- ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
@see Listener @see SWT @see #addFilter @see #addListener @since 3.0

    if (display != null && !display.isDisposed()) {
      try {
        display.asyncExec(new Runnable() {
          public void run() {
            display.timerExec(-1, handler);
            display.removeFilter(SWT.KeyUp, idleListener);
            display.removeFilter(SWT.MouseUp, idleListener);
          }
        });
      } catch (SWTException ex) {
        // ignore (display might be disposed)

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      try {
        display.asyncExec(new Runnable() {
          public void run() {
            display.timerExec(-1, handler);
            display.removeFilter(SWT.KeyUp, idleListener);
            display.removeFilter(SWT.MouseUp, idleListener);
          }
        });
      } catch (SWTException ex) {
        // ignore (display might be disposed)
      }

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    public void hideView() {


        if (clientComposite != null) {
            Display display = clientComposite.getDisplay();


            display.removeFilter(SWT.MouseDown, mouseDownListener);
        }


        if (currentPane == null) {
            return;
        }

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  protected void dispose() {
    if (canvas != null) {


      Display display = canvas.getDisplay();
      display.removeFilter(SWT.MouseVerticalWheel, wheelListener);
      display.removeFilter(SWT.MouseHorizontalWheel, wheelListener);


      canvas.dispose();
      canvas = null;
    }

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  protected void dispose() {
    if (canvas != null) {


      Display display = canvas.getDisplay();
      display.removeFilter(SWT.MouseVerticalWheel, wheelListener);
      display.removeFilter(SWT.MouseHorizontalWheel, wheelListener);


      canvas.dispose();
      canvas = null;
    }
  }

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        popup.dispose ();
      }
      Shell shell = getShell ();
      shell.removeListener (SWT.Deactivate, listener);
      Display display = getDisplay ();
      display.removeFilter (SWT.FocusIn, filter);
      popup = null;  
      text = null;  
      list = null;  
      break;
    case SWT.Move:

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      hasFocus = true;
      Shell shell = getShell ();
      shell.removeListener (SWT.Deactivate, listener);
      shell.addListener (SWT.Deactivate, listener);
      Display display = getDisplay ();
      display.removeFilter (SWT.FocusIn, filter);
      display.addFilter (SWT.FocusIn, filter);
      Event e = new Event ();
      notifyListeners (SWT.FocusIn, e);
      break;
    }

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      if ( focusControl == list || focusControl == text) return;
      hasFocus = false;
      Shell shell = getShell ();
      shell.removeListener(SWT.Deactivate, listener);
      Display display = getDisplay ();
      display.removeFilter (SWT.FocusIn, filter);
      Event e = new Event ();
      notifyListeners (SWT.FocusOut, e);
      break;
    }
    }

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        popup.dispose ();
      }
      Shell shell = getShell ();
      shell.removeListener (SWT.Deactivate, listener);
      Display display = getDisplay ();
      display.removeFilter (SWT.FocusIn, filter);
      popup = null;  
      text = null;  
      list = null;  
      arrow = null;
      break;

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      hasFocus = true;
      Shell shell = getShell ();
      shell.removeListener (SWT.Deactivate, listener);
      shell.addListener (SWT.Deactivate, listener);
      Display display = getDisplay ();
      display.removeFilter (SWT.FocusIn, filter);
      display.addFilter (SWT.FocusIn, filter);
      Event e = new Event ();
      notifyListeners (SWT.FocusIn, e);
      break;
    }

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