Example usage for com.google.gwt.user.client.ui Widget addHandler

Introduction

In this page you can find the example usage for com.google.gwt.user.client.ui Widget addHandler.

Prototype

public final <H extends EventHandler> HandlerRegistration addHandler(final H handler, GwtEvent.Type<H> type) 

Source Link

Document

Adds this handler to the widget.

Usage

From source file:com.qualogy.qafe.mgwt.client.ui.component.ComponentHelper.java

License:Apache License

public static HandlerRegistration addDataChangeHandler(Widget widget, DataChangeHandler handler) {
    return widget.addHandler(handler, DataChangeEvent.getType());
}

---

From source file:com.sencha.gxt.widget.core.client.tips.ToolTip.java

License:sencha.com license

/**
 * Binds the tool tip to the target widget. Allows a tool tip to switch the target widget.
 *
 * @param widget the target widget//from   w  w w .j av  a2 s  .  com
 */
public void initTarget(final Widget widget) {
    if (handlerRegistration != null) {
        handlerRegistration.removeHandler();
    }

    if (widget != null) {
        this.target = widget.getElement();

        Handler handler = new Handler();
        handlerRegistration = new GroupingHandlerRegistration();
        handlerRegistration.add(widget.addDomHandler(handler, MouseOverEvent.getType()));
        handlerRegistration.add(widget.addDomHandler(handler, MouseOutEvent.getType()));
        handlerRegistration.add(widget.addDomHandler(handler, MouseMoveEvent.getType()));
        handlerRegistration.add(widget.addDomHandler(handler, TouchMoveEvent.getType()));
        handlerRegistration.add(widget.addHandler(handler, HideEvent.getType()));
        handlerRegistration.add(widget.addHandler(handler, AttachEvent.getType()));

        // handles displaying tooltip on long press
        longPressOrTapGestureRecognizer = new LongPressOrTapGestureRecognizer() {
            @Override
            protected void onLongPress(TouchData touchData) {
                super.onLongPress(touchData);

                onTargetOver(touchData.getLastNativeEvent().<Event>cast());
            }

            @Override
            public boolean handleEnd(NativeEvent endEvent) {
                // cancel preventing default in this recognizer.
                cancel();

                return super.handleEnd(endEvent);
            }
        };

        // listen for touch events on the widget
        new TouchEventToGestureAdapter(widget, longPressOrTapGestureRecognizer);
    }
}

---

From source file:gwt.material.design.client.base.helper.UiHelper.java

License:Apache License

/**
 * Adds a mouse pressed handler to a widget. Adds a CSS style to the widget
 * as long as the mouse is pressed (or the user touches the widget on mobile browser).
 *
 * @param widget The widget to which the style must be applied for mouse/touch event
 * @param cssStyleName CSS style name to be applied
 *///from w  ww.  j  a va2s .  co m
public static void addMousePressedHandlers(final Widget widget, final String cssStyleName) {
    widget.sinkEvents(Event.ONMOUSEDOWN);
    widget.sinkEvents(Event.ONMOUSEUP);
    widget.sinkEvents(Event.ONMOUSEOUT);
    widget.sinkEvents(Event.TOUCHEVENTS);

    widget.addHandler(new MouseDownHandler() {
        @Override
        public void onMouseDown(MouseDownEvent event) {
            widget.addStyleName(cssStyleName);
        }
    }, MouseDownEvent.getType());

    widget.addHandler(new MouseUpHandler() {
        @Override
        public void onMouseUp(MouseUpEvent event) {
            widget.removeStyleName(cssStyleName);
        }
    }, MouseUpEvent.getType());

    widget.addHandler(new MouseOutHandler() {
        @Override
        public void onMouseOut(MouseOutEvent event) {
            widget.removeStyleName(cssStyleName);
        }
    }, MouseOutEvent.getType());

    // Touch Events
    widget.addHandler(new TouchStartHandler() {
        @Override
        public void onTouchStart(TouchStartEvent event) {
            widget.addStyleName(cssStyleName);
        }
    }, TouchStartEvent.getType());

    widget.addHandler(new TouchEndHandler() {
        @Override
        public void onTouchEnd(TouchEndEvent event) {
            widget.removeStyleName(cssStyleName);

        }
    }, TouchEndEvent.getType());

    widget.addHandler(new TouchCancelHandler() {
        @Override
        public void onTouchCancel(TouchCancelEvent event) {
            widget.removeStyleName(cssStyleName);
        }
    }, TouchCancelEvent.getType());
}

---

From source file:gwt.material.design.components.client.utils.helper.UiHelper.java

License:Apache License

/**
 * Adds a mouse pressed handler to a widget. Adds a CSS style to the widget as
 * long as the mouse is pressed (or the user touches the widget on mobile
 * browser)./*from   w w  w .j  a  va  2 s  .c o  m*/
 *
 * @param widget       The widget to which the style must be applied for
 *                     mouse/touch event
 * @param cssStyleName CSS style name to be applied
 */
public static void addMousePressedHandlers(final Widget widget, final String cssStyleName) {
    widget.sinkEvents(Event.ONMOUSEDOWN);
    widget.sinkEvents(Event.ONMOUSEUP);
    widget.sinkEvents(Event.ONMOUSEOUT);
    widget.sinkEvents(Event.TOUCHEVENTS);

    widget.addHandler(event -> {
        widget.addStyleName(cssStyleName);
    }, MouseDownEvent.getType());

    widget.addHandler(event -> {
        widget.removeStyleName(cssStyleName);
    }, MouseUpEvent.getType());

    widget.addHandler(event -> {
        widget.removeStyleName(cssStyleName);
    }, MouseOutEvent.getType());

    // Touch Events
    widget.addHandler(event -> {
        widget.addStyleName(cssStyleName);
    }, TouchStartEvent.getType());

    widget.addHandler(event -> {
        widget.removeStyleName(cssStyleName);
    }, TouchEndEvent.getType());

    widget.addHandler(event -> {
        widget.removeStyleName(cssStyleName);
    }, TouchCancelEvent.getType());
}

---

From source file:org.eclipse.che.ide.ui.dropdown.DropdownList.java

License:Open Source License

/**
 * Add the given {@code item} to the top of the list.
 *
 * @param item//from ww  w .j ava 2 s  .com
 *         item to add to the list
 * @param renderer
 *         renderer provides widgets for representing the given {@code item} in the list
 */
public void addItem(DropdownListItem item, DropdownListItemRenderer renderer) {
    final Widget headerWidget = renderer.renderHeaderWidget();
    final Widget listWidget = new SimplePanel(renderer.renderListWidget());

    itemHeaderWidgets.put(item, headerWidget);
    itemListWidgets.put(item, listWidget);

    headerWidget.addHandler(e -> toggleListVisibility(), ClickEvent.getType());

    listWidget.addStyleName(RESOURCES.dropdownListCss().listItem());
    listWidget.addDomHandler(e -> {
        setSelectedItem(item);
        dropdownPopupPanel.hide();

        if (selectionHandler != null) {
            selectionHandler.onItemSelected(item);
        }
    }, ClickEvent.getType());

    dropdownContentPanel.insert(listWidget, 0);
    adaptDropDownPanelHeight();
    setSelectedItem(item);
}

---

From source file:org.openremote.web.console.widget.InteractiveConsoleComponent.java

License:Open Source License

protected void registerHandlers(Widget component) {
    if (BrowserUtils.isMobile) {
        registerHandler(component.addDomHandler(this, TouchStartEvent.getType()));
        registerHandler(component.addDomHandler(this, TouchEndEvent.getType()));
    } else {/*  w  ww .  java 2s .  co  m*/
        registerHandler(component.addDomHandler(this, MouseDownEvent.getType()));
        registerHandler(component.addDomHandler(this, MouseUpEvent.getType()));
        registerHandler(component.addDomHandler(this, MouseOutEvent.getType()));
    }

    if (component instanceof PressStartHandler) {
        PressStartHandler pressableComponent = (PressStartHandler) component;
        registerHandler(component.addHandler(pressableComponent, PressStartEvent.getType()));
    }

    if (component instanceof PressEndHandler) {
        PressEndHandler pressableComponent = (PressEndHandler) component;
        registerHandler(component.addHandler(pressableComponent, PressEndEvent.getType()));
    }

    if (component instanceof PressCancelHandler) {
        PressCancelHandler pressableComponent = (PressCancelHandler) component;
        registerHandler(component.addHandler(pressableComponent, PressCancelEvent.getType()));
    }

    if (component instanceof Draggable) {
        Draggable draggableComponent = (Draggable) component;
        registerHandler(component.addHandler(draggableComponent, DragStartEvent.getType()));
        registerHandler(component.addHandler(draggableComponent, DragMoveEvent.getType()));
        registerHandler(component.addHandler(draggableComponent, DragEndEvent.getType()));
        registerHandler(component.addHandler(draggableComponent, DragCancelEvent.getType()));
    }

    if (component instanceof TapHandler) {
        TapHandler tappableComponent = (TapHandler) component;
        registerHandler(component.addHandler(tappableComponent, TapEvent.getType()));
    }

    if (component instanceof DoubleTapHandler) {
        DoubleTapHandler dblTappableComponent = (DoubleTapHandler) component;
        registerHandler(component.addHandler(dblTappableComponent, DoubleTapEvent.getType()));
    }

    if (component instanceof HoldHandler) {
        HoldHandler holdableComponent = (HoldHandler) component;
        registerHandler(component.addHandler(holdableComponent, HoldEvent.getType()));
    }

    if (component instanceof SwipeHandler) {
        SwipeHandler pressableComponent = (SwipeHandler) component;
        registerHandler(component.addHandler(pressableComponent, SwipeEvent.getType()));
    }

    if (component instanceof RotationHandler) {
        RotationHandler pressableComponent = (RotationHandler) component;
        registerHandler(component.addHandler(pressableComponent, RotationEvent.getType()));
    }
}

---

From source file:ru.fly.client.ui.toolbar.Menu.java

License:Apache License

@Override
protected void doAttachChild(Widget w) {
    super.doAttachChild(w);
    w.addHandler(new ClickHandler() {
        @Override//from w w  w. j a  v  a2s .  co  m
        public void onClick() {
            Menu.this.fireEvent(new ClickEvent());
        }
    }, ClickEvent.getType());
}

---