com.google.gwt.dom.client.BrowserEvents Java Examples

@Override
protected void onBrowserEvent2(Event event) {
  super.onBrowserEvent2(event);

  // Handle keyboard navigation between lists.
  String eventType = event.getType();
  if (BrowserEvents.KEYDOWN.equals(eventType) && !isKeyboardNavigationSuppressed()) {
    int keyCode = event.getKeyCode();
    boolean isRtl = LocaleInfo.getCurrentLocale().isRTL();
    keyCode = KeyCodes.maybeSwapArrowKeysForRtl(keyCode, isRtl);
    switch (keyCode) {
      case KeyCodes.KEY_LEFT:
        keyboardNavigateShallow();
        return;
      case KeyCodes.KEY_RIGHT:
        keyboardNavigateDeep();
        return;
    }
  }
}
 

@Override
public void onBrowserEvent(Context context, Element parent, TreeState.TreeNodeState value, NativeEvent event, ValueUpdater<TreeState.TreeNodeState> valueUpdater) {
  String type = event.getType();

  if (type.equals(BrowserEvents.DBLCLICK)) {

    myCellTree.getTreeViewModel().getDoubleClickHandler().accept(value);
  }
  else {
    super.onBrowserEvent(context, parent, value, event, valueUpdater);
  }
}
 

public void fireGestureStartEvent(HasHandlers widget) {
    DomEvent.fireNativeEvent(Document.get().createHtmlEvent(BrowserEvents.GESTURESTART, false, false), widget);
}
 

public void fireGestureChangeEvent(HasHandlers widget) {
    DomEvent.fireNativeEvent(Document.get().createHtmlEvent(BrowserEvents.GESTURECHANGE, false, false), widget);
}
 

public void fireGestureEndEvent(HasHandlers widget) {
    DomEvent.fireNativeEvent(Document.get().createHtmlEvent(BrowserEvents.GESTUREEND, false, false), widget);
}
 

public void fireTouchStartEvent(HasHandlers widget) {
    DomEvent.fireNativeEvent(Document.get().createHtmlEvent(BrowserEvents.TOUCHSTART, false, false), widget);
}
 

public void fireTouchMoveEvent(HasHandlers widget) {
    DomEvent.fireNativeEvent(Document.get().createHtmlEvent(BrowserEvents.TOUCHMOVE, false, false), widget);
}
 

public void fireTouchEndEvent(HasHandlers widget) {
    DomEvent.fireNativeEvent(Document.get().createHtmlEvent(BrowserEvents.TOUCHEND, false, false), widget);
}
 

public void fireTouchCancelEvent(HasHandlers widget) {
    DomEvent.fireNativeEvent(Document.get().createHtmlEvent(BrowserEvents.TOUCHCANCEL, false, false), widget);
}
 

public void fireMouseWheelEvent(HasHandlers widget) {
    DomEvent.fireNativeEvent(Document.get().createHtmlEvent(BrowserEvents.MOUSEWHEEL, false, false), widget);
}
 

public GwtTreeCell() {
  super(BrowserEvents.DBLCLICK);
}
 

/**
 * Sets whether this item's children are displayed.
 *
 * @param open       whether the item is open
 * @param fireEvents true to fire events if the state changes
 * @return true if successfully opened, false otherwise.
 */
public boolean setOpen(boolean open, boolean fireEvents) {
  // Early out.
  if (this.open == open) {
    return this.open;
  }

  // If this node is a leaf node, do not call TreeViewModel.getNodeInfo().
  if (open && isLeaf()) {
    return false;
  }

  // The animation clears the innerHtml of the childContainer. If we reopen a
  // node as its closing, it is possible that the new data will be set
  // synchronously, so we have to cancel the animation before attaching the
  // data display to the node info.
  tree.cancelTreeNodeAnimation();
  this.animate = true;
  this.open = open;
  if (open) {
    if (!nodeInfoLoaded) {
      nodeInfoLoaded = true;
      nodeInfo = tree.getNodeInfo(value);

      // Sink events for the new node.
      if (nodeInfo != null) {
        Set<String> eventsToSink = new HashSet<String>();
        // Listen for focus and blur for keyboard navigation
        eventsToSink.add(BrowserEvents.FOCUS);
        eventsToSink.add(BrowserEvents.BLUR);

        Set<String> consumedEvents = nodeInfo.getCell().getConsumedEvents();
        if (consumedEvents != null) {
          eventsToSink.addAll(consumedEvents);
        }
        CellBasedWidgetImpl.get().sinkEvents(tree, eventsToSink);
      }
    }

    // If we don't have any nodeInfo, we must be a leaf node.
    if (nodeInfo != null) {
      // Add a loading message.
      ensureChildContainer();
      showOrHide(showMoreElem, false);
      showOrHide(emptyMessageElem, false);
      if (!isRootNode()) {
        setStyleName(getCellParent(), tree.getStyle().cellTreeOpenItem(), true);
      }
      ensureAnimationFrame().getStyle().setProperty("display", "");
      onOpen(nodeInfo);

      // Fire an event.
      if (fireEvents) {
        OpenEvent.fire(tree, getTreeNode());
      }
    }
    else {
      this.open = false;
    }
  }
  else {
    if (!isRootNode()) {
      setStyleName(getCellParent(), tree.getStyle().cellTreeOpenItem(), false);
    }
    cleanup(false);
    tree.maybeAnimateTreeNode(this);
    updateImage(false);

    // Keyboard select this node if the open node was a child.
    CellTreeNodeView<?> keySelected = tree.getKeyboardSelectedNode();
    while (keySelected != null) {
      if (keySelected == this) {
        tree.keyboardSelect(this, true);
        break;
      }
      keySelected = keySelected.getParentNode();
    }

    // Fire an event.
    if (fireEvents) {
      CloseEvent.fire(tree, getTreeNode());
    }
  }

  return this.open;
}