Package com.google.gwt.user.client.Event

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

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    private static void disableRefresh()
  {
    if (refreshPreviewHandler == null)
    {
      refreshPreviewHandler = com.google.gwt.user.client.Event.addNativePreviewHandler(new NativePreviewHandler(){
        public void onPreviewNativeEvent(NativePreviewEvent event)
        {
          if (event.getTypeInt() == com.google.gwt.user.client.Event.ONKEYDOWN)
          {
            NativeEvent nEvent = event.getNativeEvent();
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      getElement().center(true);
    }

    getElement().updateZIndex(0);
    if (modal) {
      modalPreview = Event.addNativePreviewHandler(new NativePreviewHandler() {
        public void onPreviewNativeEvent(NativePreviewEvent event) {
          if (Element.is(event.getNativeEvent().getEventTarget())) {
            XElement target = event.getNativeEvent().getEventTarget().<XElement> cast();

            String tag = target.getTagName();
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    }
    this.showing = showing;

    // Create or remove the native preview handler
    if (showing) {
      nativePreviewHandlerRegistration = Event.addNativePreviewHandler(new NativePreviewHandler() {
        public void onPreviewNativeEvent(NativePreviewEvent event) {
          previewNativeEvent(event);
        }
      });
    } else if (nativePreviewHandlerRegistration != null) {
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        }
        this.showing = showing;

        // Create or remove the native preview handler
        if (showing) {
            nativePreviewHandlerRegistration = Event.addNativePreviewHandler(new NativePreviewHandler() {
                public void onPreviewNativeEvent(NativePreviewEvent event) {
                    previewNativeEvent(event);
                }
            });
        } else if (nativePreviewHandlerRegistration != null) {
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      historyHandlerRegistration = null;
    }

    // Create handlers if showing.
    if (showing) {
      nativePreviewHandlerRegistration = Event.addNativePreviewHandler(new NativePreviewHandler() {
        public void onPreviewNativeEvent(NativePreviewEvent event) {
          previewNativeEvent(event);
        }
      });
      historyHandlerRegistration = History.addValueChangeHandler(new ValueChangeHandler<String>() {
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        final int eventType = Event.as(startEvent).getTypeInt();
        if (handleDragEvents
                && (eventType == Event.ONMOUSEDOWN || eventType == Event.ONTOUCHSTART)) {
            // only really start drag event on mousemove
            deferredStartRegistration = Event
                    .addNativePreviewHandler(new NativePreviewHandler() {

                        public void onPreviewNativeEvent(
                                NativePreviewEvent event) {
                            int typeInt = event.getTypeInt();
                            switch (typeInt) {
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        final int eventType = Event.as(startEvent).getTypeInt();
        if (handleDragEvents
                && (eventType == Event.ONMOUSEDOWN || eventType == Event.ONTOUCHSTART)) {
            // only really start drag event on mousemove
            deferredStartRegistration = Event
                    .addNativePreviewHandler(new NativePreviewHandler() {

                        public void onPreviewNativeEvent(
                                NativePreviewEvent event) {
                            int typeInt = event.getTypeInt();
                            switch (typeInt) {
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      historyHandlerRegistration = null;
    }

    // Create handlers if showing.
    if (showing) {
      nativePreviewHandlerRegistration = Event.addNativePreviewHandler(new NativePreviewHandler() {
        public void onPreviewNativeEvent(NativePreviewEvent event) {
          previewNativeEvent(event);
        }
      });
      historyHandlerRegistration = History.addValueChangeHandler(new ValueChangeHandler<String>() {
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    sandbox.setPixelSize(300, 300);
    sandbox.getElement().getStyle().setProperty("border", "3px solid blue");
    sandbox.getElement().getStyle().setProperty("cursor", "crosshair");

    // Keep the crosshair under the cursor
    Event.addNativePreviewHandler(new NativePreviewHandler() {
      public void onPreviewNativeEvent(NativePreviewEvent event) {
        // Ignore events outside of the sandbox
        NativeEvent nativeEvent = event.getNativeEvent();
        Element target = Element.as(nativeEvent.getEventTarget());
        if (!sandbox.getElement().isOrHasChild(target)
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        "The event will not fire in the button.", true);
    addTest(BUTTON_3_ID, "Module 2 cancels event.",
        "The event will not fire in the button.", true);

    // Add the event preview.
    Event.addNativePreviewHandler(new NativePreviewHandler() {
      public void onPreviewNativeEvent(NativePreviewEvent event) {
        if (event.getTypeInt() == Event.ONCLICK) {
          Element target = event.getNativeEvent().getEventTarget().cast();
          if (BUTTON_2_ID.equals(target.getId())) {
            event.cancel();
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