Examples of com.google.gwt.user.client.Event

com.google.gwt.user.client.Event
An opaque handle to a native DOM Event. An Event cannot be created directly. Instead, use the Event type when returning a native DOM event from JSNI methods. An Event passed back into JSNI becomes the original DOM event the Event was created from, and can be accessed in JavaScript code as expected. This is typically done by calling methods in the {@link com.google.gwt.user.client.DOM} class.

        // Sink the mouse events
        Event.addNativePreviewHandler(new Event.NativePreviewHandler() {
            @Override
            public void onPreviewNativeEvent(NativePreviewEvent nativeEvent) {
                if (initDone) {
                    Event event = (Event) nativeEvent.getNativeEvent();
                    Element e = Element.as(event.getEventTarget());


                    if (display.hasElement(e) || browser.hasElement(e)
                            || DOM.eventGetType(event) == Event.ONMOUSEUP
                            || DOM.eventGetType(event) == Event.ONMOUSEMOVE) {


                        // Prevent default browser behaviour
                        event.preventDefault();


                        // Notify listeners of event
                        onBrowserEvent(event);
                    }
                }

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    grid.setCellSpacing(0);
    grid.setCellPadding(0);
    grid.addClickHandler(new ClickHandler() {


      public void onClick(ClickEvent event) {
        Event evt = DOM.eventGetCurrentEvent();
        ComponentEvent be = new ComponentEvent(DatePicker.this, evt);
        onDayClick(be);
      }
    });
    String s = GXT.isAriaEnabled() ? "<a role=gridcell tabindex=0><span role=presentation></span></a>"

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  public boolean isAutoHideAllowEvent() {
    return autoHideAllowEvent;
  }


  public void onPreviewNativeEvent(NativePreviewEvent event) {
    Event e = event.getNativeEvent().<Event> cast();


    PreviewEvent pe = new PreviewEvent(this, event);
    pe.setType(new EventType(e.getTypeInt()));
    pe.setEvent(e);


    lastX = pe.getClientX();
    lastY = pe.getClientY();

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      DNDManager.get().handleDragEnd(this, e);
    }
  }


  private void onDraggableDragMove(DragMoveEvent de) {
    Event e = de.getNativeEvent().cast();
    de.setX(e.getClientX() + 12 + XDOM.getBodyScrollLeft());
    de.setY(e.getClientY() + 12 + XDOM.getBodyScrollTop());


    DndDragMoveEvent me = new DndDragMoveEvent(widget, this, de, statusProxy, data);
    DNDManager.get().handleDragMove(this, me);
  }

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  public boolean isAutoHideAllowEvent() {
    return autoHideAllowEvent;
  }


  public void onPreviewNativeEvent(NativePreviewEvent event) {
    Event e = event.getNativeEvent().cast();


    lastX = e.getClientX();
    lastY = e.getClientY();


    if (autoHide && onAutoHidePreview(event)) {
      if (autoHideAllowEvent) {
        event.cancel();
      }

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    handlerRegistration = handle.addDomHandler(handler, MouseDownEvent.getType());


    preview = new BaseEventPreview() {
      @Override
      public boolean onPreview(NativePreviewEvent event) {
        Event e = event.getNativeEvent().<Event> cast();
        e.preventDefault();
        switch (event.getTypeInt()) {
          case Event.ONKEYDOWN:
            if (dragging && e.getKeyCode() == KeyCodes.KEY_ESCAPE) {
              cancelDrag();
            }
            break;
          case Event.ONMOUSEMOVE:
            onMouseMove(e);

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  protected boolean isExpanded(XElement row) {
    return appearance.isExpanded(row);
  }


  protected void onMouseDown(RowClickEvent event) {
    Event e = event.getEvent();
    XElement target = e.getEventTarget().cast();
    if (appearance.isExpandElement(target)) {
      e.stopPropagation();
      e.preventDefault();
      XElement row = grid.getView().findRow(target).cast();
      toggleRow(row);
    }
  }

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    };
    bindings.registerAction(KeyCombo.ORDER_G, testAction);
    EditorImpl editor = createEditor(bindings);


    // 103 = g, this event = CTRL_G which is bound to ORDER_G by the EventWrapper
    Event rawEvent = Document.get().createKeyPressEvent(
        true, false, false, false, G_CODE, G_CODE).cast();
    editor.onJavaScriptEvent("keypress", rawEvent);
    assertEquals("Callback action not called on registered keypress", callTracker, 1);
  }

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    };
    bindings.registerAction(KeyCombo.ORDER_G, testAction);
    EditorImpl editor = createEditor(bindings);


    // This event is not ORDER_G, it has other accelerators thrown in.
    Event rawEvent = Document.get().createKeyPressEvent(
        true, true, true, false, G_CODE, G_CODE).cast();
    editor.onJavaScriptEvent("keypress", rawEvent);
    assertEquals("Callback action called on unregistered keypress", callTracker, 0);
  }

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      }
    };
    bindings.registerAction(KeyCombo.ORDER_G, testAction);


    EditorImpl editor = createEditor(bindings);
    Event rawEvent = Document.get().createKeyPressEvent(
        true, false, false, false, G_CODE, G_CODE).cast();
    editor.onJavaScriptEvent("keypress", rawEvent);
    // callTracker should be 1 assuming the test above passes


    bindings.removeAction(KeyCombo.ORDER_G);

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