Example usage for com.google.gwt.user.client DOM eventPreventDefault

Introduction

In this page you can find the example usage for com.google.gwt.user.client DOM eventPreventDefault.

Prototype

@Deprecated
public static void eventPreventDefault(Event evt) 

Source Link

Document

Prevents the browser from taking its default action for the given event.

Usage

From source file:accelerator.client.ui.widget.AbstractButton.java

License:Open Source License

/**
 * {@inheritDoc}/*from   w w  w  .ja  va  2  s.c om*/
 */
public void onBrowserEvent(Event event) {
    int eventType = DOM.eventGetType(event);

    switch (eventType) {
    case Event.ONMOUSEOVER:
        addStyleName(UI_STATE_HOVER);
        break;
    case Event.ONMOUSEOUT:
        removeStyleName(UI_STATE_HOVER);
        break;
    case Event.ONCLICK:
        if (disabled) {
            return;
        }
    }

    switch (eventType) {
    case Event.ONKEYDOWN:
    case Event.ONKEYPRESS:
    case Event.ONKEYUP:
        if (DOM.eventGetAltKey(event) || DOM.eventGetMetaKey(event)) {
            super.onBrowserEvent(event);
            return;
        }
    }

    switch (eventType) {
    case Event.ONKEYDOWN: {
        keyboardNavigation(event);
        lastWasKeyDown = true;
        break;
    }
    case Event.ONKEYPRESS:
        if (!lastWasKeyDown) {
            keyboardNavigation(event);
        }
        lastWasKeyDown = false;
        break;
    case Event.ONKEYUP:
        lastWasKeyDown = false;
        break;
    }

    switch (eventType) {
    case Event.ONKEYDOWN:
    case Event.ONKEYUP:
        if (isKeyAssigned(DOM.eventGetKeyCode(event))) {
            DOM.eventCancelBubble(event, true);
            DOM.eventPreventDefault(event);
            return;
        }
    }

    super.onBrowserEvent(event);
}

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From source file:asquare.gwt.debug.client.DebugConsole.java

License:Apache License

@Override
public void onBrowserEvent(Event event) {
    super.onBrowserEvent(event);

    // prevent selection in standard browsers
    if (DOM.eventGetType(event) == Event.ONMOUSEDOWN) {
        DOM.eventPreventDefault(event);
    }/*  ww w .j  a  va  2s  .  co m*/
}

---

From source file:asquare.gwt.tk.client.ui.behavior.ControllerAdaptor.java

License:Apache License

public void onBrowserEvent(Widget widget, Event event) {
    if (!doBrowserEvent(widget, event)) {
        DOM.eventPreventDefault(event);
        DOM.eventCancelBubble(event, true);
    }/*from   ww w . j  a v a  2 s . c  o  m*/
}

---

From source file:asquare.gwt.tk.client.ui.behavior.impl.TabFocusControllerStandard.java

License:Apache License

@Override
public void onBrowserEvent(Widget widget, Event event) {
    if (KeyEventImpl.getKeyCode(event) == KeyEvent.KEYCODE_TAB) {
        // cancel tab keydown, thereby overriding focus change
        DOM.eventPreventDefault(event);
        FocusModel model = getModel();//from   ww w .j av a 2s  .  c  o m
        if (model != null && model.getSize() > 0) {
            model.focusNextWidget(!DOM.eventGetShiftKey(event));
        }
    }
}

---

From source file:asquare.gwt.tk.client.ui.behavior.InputEventImpl.java

License:Apache License

public void preventDefault() {
    if (isPreviewPhase())
        throw new IllegalStateException();

    m_preventDefault = true;//from   w  w  w.j  a v  a 2 s .c om
    DOM.eventPreventDefault(getDomEvent());
}

---

From source file:asquare.gwt.tk.client.ui.behavior.PreventDefaultController.java

License:Apache License

@Override
public void onBrowserEvent(Widget widget, Event event) {
    DOM.eventPreventDefault(event);
}

---

From source file:asquare.gwt.tk.client.ui.SimpleHyperLink.java

License:Apache License

@Override
public void onBrowserEvent(Event event) {
    if (DOM.eventGetType(event) == Event.ONCLICK) {
        DOM.eventPreventDefault(event);
    }//from   w  w  w  .  j  a  v a2 s .c  o  m
    super.onBrowserEvent(event);
}

---

From source file:at.ac.fhcampuswien.atom.client.gui.attributes.components.slider.SliderBar.java

License:Apache License

/**
 * Listen for events that will move the knob.
 * /*ww  w  .  ja v a2  s.  c  o m*/
 * @param event the event that occurred
 */
@Override
public void onBrowserEvent(Event event) {
    super.onBrowserEvent(event);
    if (enabled) {
        switch (DOM.eventGetType(event)) {
        // Unhighlight and cancel keyboard events
        case Event.ONBLUR:
            keyTimer.cancel();
            if (slidingMouse) {
                DOM.releaseCapture(getElement());
                slidingMouse = false;
                slideKnob(event);
                stopSliding(true, true);
            } else if (slidingKeyboard) {
                slidingKeyboard = false;
                stopSliding(true, true);
            }
            unhighlight();
            break;

        // Highlight on focus
        case Event.ONFOCUS:
            highlight();
            break;

        // Mousewheel events
        case Event.ONMOUSEWHEEL:
            int velocityY = DOM.eventGetMouseWheelVelocityY(event);
            DOM.eventPreventDefault(event);
            if (velocityY > 0) {
                shiftRight(1);
            } else {
                shiftLeft(1);
            }
            break;

        // Shift left or right on key press
        case Event.ONKEYDOWN:
            if (!slidingKeyboard) {
                int multiplier = 1;
                if (DOM.eventGetCtrlKey(event)) {
                    multiplier = (int) (getTotalRange() / stepSize / 10);
                }

                switch (DOM.eventGetKeyCode(event)) {
                case KeyCodes.KEY_HOME:
                    DOM.eventPreventDefault(event);
                    setCurrentValue(minValue);
                    break;
                case KeyCodes.KEY_END:
                    DOM.eventPreventDefault(event);
                    setCurrentValue(maxValue);
                    break;
                case KeyCodes.KEY_LEFT:
                    DOM.eventPreventDefault(event);
                    slidingKeyboard = true;
                    startSliding(false, true);
                    shiftLeft(multiplier);
                    keyTimer.schedule(400, false, multiplier);
                    break;
                case KeyCodes.KEY_RIGHT:
                    DOM.eventPreventDefault(event);
                    slidingKeyboard = true;
                    startSliding(false, true);
                    shiftRight(multiplier);
                    keyTimer.schedule(400, true, multiplier);
                    break;
                case 32:
                    DOM.eventPreventDefault(event);
                    setCurrentValue(minValue + getTotalRange() / 2);
                    break;
                }
            }
            break;
        // Stop shifting on key up
        case Event.ONKEYUP:
            keyTimer.cancel();
            if (slidingKeyboard) {
                slidingKeyboard = false;
                stopSliding(true, true);
            }
            break;

        // Mouse Events
        case Event.ONMOUSEDOWN:
            setFocus(true);
            slidingMouse = true;
            DOM.setCapture(getElement());
            startSliding(true, true);
            DOM.eventPreventDefault(event);
            slideKnob(event);
            break;
        case Event.ONMOUSEUP:
            if (slidingMouse) {
                DOM.releaseCapture(getElement());
                slidingMouse = false;
                slideKnob(event);
                stopSliding(true, true);
            }
            break;
        case Event.ONMOUSEMOVE:
            if (slidingMouse) {
                slideKnob(event);
            }
            break;
        }
    }
}

---

From source file:at.ait.dme.yuma.client.colorpicker.SliderBar.java

License:Artistic License

/**
 * Fired whenever a browser event is received.
 * @param event Event to process/*from  ww  w.  ja v  a 2s.c o m*/
 */
@Override
public void onBrowserEvent(Event event) {
    switch (DOM.eventGetType(event)) {
    case Event.ONMOUSEUP:
        Event.releaseCapture(this.getElement());
        capturedMouse = false;
        break;
    case Event.ONMOUSEDOWN:
        Event.setCapture(this.getElement());
        capturedMouse = true;
    case Event.ONMOUSEMOVE:
        if (capturedMouse) {
            DOM.eventPreventDefault(event);

            int y = DOM.eventGetClientY(event) - getAbsoluteTop() + Window.getScrollTop();

            if (y < 0)
                y = 0;
            if (y > 256)
                y = 256;

            DOM.setStyleAttribute(slider.getElement(), "top", y - 4 + "px");

            if (parent != null) {
                parent.onBarSelected(y);
            }
        }
    }
}

---

From source file:at.ait.dme.yuma.client.colorpicker.SliderMap.java

License:Artistic License

/**
 * Fired whenever a browser event is received.
 * @param event Event to process/*from   w w w  .ja va  2  s  .  com*/
 */
@Override
public void onBrowserEvent(Event event) {
    super.onBrowserEvent(event);

    switch (DOM.eventGetType(event)) {
    case Event.ONMOUSEUP:
        Event.releaseCapture(this.getElement());
        capturedMouse = false;
        break;
    case Event.ONMOUSEDOWN:
        Event.setCapture(this.getElement());
        capturedMouse = true;
    case Event.ONMOUSEMOVE:
        if (capturedMouse) {
            DOM.eventPreventDefault(event);

            int x = DOM.eventGetClientX(event) - colorUnderlay.getAbsoluteLeft() + 1 + Window.getScrollLeft();
            int y = DOM.eventGetClientY(event) - colorUnderlay.getAbsoluteTop() + 1 + Window.getScrollTop();

            if (x < 0)
                x = 0;
            if (x > 256)
                x = 256;
            if (y < 0)
                y = 0;
            if (y > 256)
                y = 256;

            DOM.setStyleAttribute(slider.getElement(), "left", x - 7 + "px");
            DOM.setStyleAttribute(slider.getElement(), "top", y - 7 + "px");

            if (parent != null) {
                parent.onMapSelected(x, y);
            }
        }
    }
}

---

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