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.

    // Verify the exception is captured
    final List<String> ret = new ArrayList<String>();
    GWT.setUncaughtExceptionHandler(new UncaughtExceptionHandler() {
      @Override
      public void onUncaughtException(Throwable e) {
        Event event = DOM.eventGetCurrentEvent();
        if (event == null) {
          ret.add("Event is null");
          return;
        }
        if (event.getTypeInt() != Event.ONCLICK) {
          ret.add("Event is not a click event");
          return;
        }
        ret.add("Success");
      }

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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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        if (!cm.isHidden(i)) {
          before = i;
          break;
        }
      }
      Event event = ce.getEvent();
      int x = event.getClientX();
      Region r = header.el().getRegion();
      int hw = splitterWidth;


      el().setY(container.el().getY());
      el().setHeight(container.getHeight());

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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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    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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    grid.setStyleName("x-date-inner");
    grid.setCellSpacing(0);
    grid.setCellPadding(0);
    grid.addTableListener(new TableListener() {
      public void onCellClicked(SourcesTableEvents sender, int row, int cell) {
        Event event = DOM.eventGetCurrentEvent();
        ComponentEvent be = new ComponentEvent(DatePicker.this, event);
        onDayClick(be);
      }
    });

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    if (event.isCanceled()) {
      return;
    }


    // If the event targets the popup or the partner, consume it
    Event nativeEvent = Event.as(event.getNativeEvent());
    boolean eventTargetsPopupOrPartner = eventTargetsPopup(nativeEvent)
        || eventTargetsPartner(nativeEvent);
    if (eventTargetsPopupOrPartner) {
      event.consume();
    }


    // Cancel the event if it doesn't target the modal popup. Note that the
    // event can be both canceled and consumed.
    if (modal) {
      event.cancel();
    }


    // Switch on the event type
    int type = nativeEvent.getTypeInt();
    switch (type) {
      case Event.ONKEYDOWN: {
        if (!onKeyDownPreview((char) nativeEvent.getKeyCode(),
            KeyboardListenerCollection.getKeyboardModifiers(nativeEvent))) {
          event.cancel();
        }
        return;
      }
      case Event.ONKEYUP: {
        if (!onKeyUpPreview((char) nativeEvent.getKeyCode(),
            KeyboardListenerCollection.getKeyboardModifiers(nativeEvent))) {
          event.cancel();
        }
        return;
      }
      case Event.ONKEYPRESS: {
        if (!onKeyPressPreview((char) nativeEvent.getKeyCode(),
            KeyboardListenerCollection.getKeyboardModifiers(nativeEvent))) {
          event.cancel();
        }
        return;
      }


      case Event.ONMOUSEDOWN:
        // Don't eat events if event capture is enabled, as this can
        // interfere with dialog dragging, for example.
        if (DOM.getCaptureElement() != null) {
          event.consume();
          return;
        }


        if (!eventTargetsPopupOrPartner && autoHide) {
          hide(true);
          return;
        }
        break;
      case Event.ONMOUSEUP:
      case Event.ONMOUSEMOVE:
      case Event.ONCLICK:
      case Event.ONDBLCLICK: {
        // Don't eat events if event capture is enabled, as this can
        // interfere with dialog dragging, for example.
        if (DOM.getCaptureElement() != null) {
          event.consume();
          return;
        }
        break;
      }


      case Event.ONFOCUS: {
        Element target = nativeEvent.getTarget();
        if (modal && !eventTargetsPopupOrPartner && (target != null)) {
          blur(target);
          event.cancel();
          return;
        }

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          y += location.getTop();


          startDragging();
        } else {
          // prevent IE image drag when drag sensitivity > 5
          Event currentEvent = DOM.eventGetCurrentEvent();
          if (currentEvent != null) {
            DOM.eventPreventDefault(currentEvent);
          }
        }
      }
      if (dragging == NOT_DRAGGING) {
        return;
      }
    }
    // proceed with the actual drag
    Event currentEvent = DOM.eventGetCurrentEvent();
    if (currentEvent != null) {
      DOM.eventPreventDefault(currentEvent);
    }
    actualMove(x, y);
  }

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    if (event.isCanceled()) {
      return;
    }


    // If the event targets the popup or the partner, consume it
    Event nativeEvent = Event.as(event.getNativeEvent());
    boolean eventTargetsPopupOrPartner = eventTargetsPopup(nativeEvent)
        || eventTargetsPartner(nativeEvent);
    if (eventTargetsPopupOrPartner) {
      event.consume();
    }


    // Cancel the event if it doesn't target the modal popup. Note that the
    // event can be both canceled and consumed.
    if (modal) {
      event.cancel();
    }


    // Switch on the event type
    int type = nativeEvent.getTypeInt();
    switch (type) {
      case Event.ONKEYDOWN: {
        if (!onKeyDownPreview((char) nativeEvent.getKeyCode(),
            KeyboardListenerCollection.getKeyboardModifiers(nativeEvent))) {
          event.cancel();
        }
        return;
      }
      case Event.ONKEYUP: {
        if (!onKeyUpPreview((char) nativeEvent.getKeyCode(),
            KeyboardListenerCollection.getKeyboardModifiers(nativeEvent))) {
          event.cancel();
        }
        return;
      }
      case Event.ONKEYPRESS: {
        if (!onKeyPressPreview((char) nativeEvent.getKeyCode(),
            KeyboardListenerCollection.getKeyboardModifiers(nativeEvent))) {
          event.cancel();
        }
        return;
      }


      case Event.ONMOUSEDOWN:
        // Don't eat events if event capture is enabled, as this can
        // interfere with dialog dragging, for example.
        if (DOM.getCaptureElement() != null) {
          event.consume();
          return;
        }


        if (!eventTargetsPopupOrPartner && autoHide) {
          hide(true);
          return;
        }
        break;
      case Event.ONMOUSEUP:
      case Event.ONMOUSEMOVE:
      case Event.ONCLICK:
      case Event.ONDBLCLICK: {
        // Don't eat events if event capture is enabled, as this can
        // interfere with dialog dragging, for example.
        if (DOM.getCaptureElement() != null) {
          event.consume();
          return;
        }
        break;
      }


      case Event.ONFOCUS: {
        Element target = nativeEvent.getTarget();
        if (modal && !eventTargetsPopupOrPartner && (target != null)) {
          blur(target);
          event.cancel();
          return;
        }

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