Examples of com.google.gwt.event.shared.HandlerRegistration

com.google.gwt.event.shared.HandlerRegistration
Registration returned from a call to {@link HandlerManager#addHandler(com.google.gwt.event.shared.GwtEvent.Type,EventHandler)}. Use the handler registration to remove handlers when they are no longer needed. Note, this interface is under the control of the {@link HandlerManager} classand may be expanded over time, so extend {@link DefaultHandlerRegistration}if you do not wish to get compiler errors if we extend the handler registry functionality.

    return toggles.keySet().iterator();
  }


  @Override
  public boolean remove(Object toggle) {
    HandlerRegistration reg = toggles.remove(toggle);
    if (reg != null) {
      reg.removeHandler();
      return true;
    }
    return false;


  }

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    @Override
    public HandlerRegistration addValueChangeHandler(final ValueChangeHandler<String> handler) {


        changeHandlers.add(handler);


        return new HandlerRegistration() {
            @Override
            public void removeHandler() {
                changeHandlers.remove(handler);
            }
        };

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  }


  void unbind(String property) {
    bindings.remove(property);
    converters.remove(property);
    HandlerRegistration reg = handlerRegistrations.remove(property);
    if (reg != null) {
      reg.removeHandler();
    }
  }

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      if (binding.getWidget().equals(widget) && !property.equals(binding.getProperty())) {
        throw new WidgetAlreadyBoundException("Widget already bound to property: " + binding.getProperty());
      }
    }


    HandlerRegistration handlerRegistration = null;
    if (widget instanceof HasValue) {
      handlerRegistration = ((HasValue) widget).addValueChangeHandler(new ValueChangeHandler() {
        @Override
        public void onValueChange(ValueChangeEvent event) {
          Object oldValue = proxy.get(property);

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    * @see #touch touch
    * @see #isUpdateNeeded isUpdateNeeded
    */ 


  public HandlerRegistration addClickHandler(ClickHandler clickHandler) {
       HandlerRegistration result = 
           addDomHandler(clickHandler, ClickEvent.getType());
       return result;   
   }

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    return toggles.keySet().iterator();
  }


  @Override
  public boolean remove(Object toggle) {
    HandlerRegistration reg = toggles.remove(toggle);
    if (reg != null) {
      reg.removeHandler();
      return true;
    }
    return false;


  }

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      }


      private void cleanUp() {
        RootPanel.get().remove(doubleLoadedImage);


        final HandlerRegistration onLoadReg = onLoadHandlerRegistration;
        final HandlerRegistration onErrorReg = onErrorHandlerRegistration;


        // HACK(user): There is a bug in GWT which stops us from removing a listener in HOSTED
        // mode inside the invoke context.  Put the remove in a deferred command to avoid this
        // error
        ScheduleCommand.addCommand(new Scheduler.Task() {
          public void execute() {
            onLoadReg.removeHandler();
            onErrorReg.removeHandler();
          }
        });


        onLoadHandlerRegistration = null;
        onErrorHandlerRegistration = null;

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      d.setConstrainClient(false);
      portlet.setData("gxt.draggable", d);
    }
    d.setUseProxy(true);


    HandlerRegistration reg = handlerRegistrations.get(portlet.getId());
    if (reg != null) {
      reg.removeHandler();
    }
    d.addDragHandler(handler);


    d.setMoveAfterProxyDrag(false);
    d.setSizeProxyToSource(true);

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    resizeHandlers.add(handler);
    if (isActive())
    {  
      ViewHandlers.ensureViewContainerResizeHandler(getContainer());
    }
    return new HandlerRegistration()
    {
      @Override
      public void removeHandler()
      {
        int index = resizeHandlers.indexOf(handler);

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    if (isActive())
    {  
      ViewHandlers.ensureViewContainerOrientationChangeHandler(getContainer());
    }
    
    return new HandlerRegistration()
    {
      @Override
      public void removeHandler()
      {
        int index = orientationHandlers.indexOf(handler);

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