com.google.gwt.query.client.plugins.events.GqEvent.java Source code

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Here is the source code for com.google.gwt.query.client.plugins.events.GqEvent.java

Source

package com.google.gwt.query.client.plugins.events;

import com.google.gwt.dom.client.Element;
import com.google.gwt.query.client.GQuery;
import com.google.gwt.user.client.Event;

/**
 * This object allows you to have a full copy of the original Event and
 * implements some useful method of the jQuery event model.
 * 
 * This is also useful in Internet Explorer because it use the same javascript
 * object to fire MouseDownEvent, MouseMoveEvent or MouseStopEvent on the same
 * element. So, we cannot keep a copy of the MouseDownEvent during a dragging
 * for example.
 * 
 * 
 * 
 * Be Careful : the methods preventDefault() and stopPropagation must be called directly on the
 * original event.
 * 
 * 
 */
public class GqEvent extends Event {

    // Gwt Events class has not this event defined, 
    // so we have to select one power of 2 which is unused in Event class 
    public static int ONSUBMIT = 0x10000000;
    public static int ONRESIZE = 0x8000000;

    /**
     * Create a new {@link GqEvent} by copying the <code>originalEvent</code>.
     */
    public static GqEvent create(Event originalEvent) {
        GqEvent gQueryEvent = createObject().cast();
        copy(originalEvent, gQueryEvent);
        return gQueryEvent;
    }

    private static native void copy(Event originalEvent, GqEvent gQueryEvent) /*-{
                                                                              for ( var field in originalEvent) {
                                                                              gQueryEvent[field] = originalEvent[field];
                                                                              }
                                                                              gQueryEvent.originalEvent = originalEvent;
                                                                              }-*/;

    protected GqEvent() {
    }

    /**
     * Return the original event (the one created by the browser)
     */
    public final native Event getOriginalEvent()/*-{
                                                return this.originalEvent;
                                                }-*/;

    public final native void setCurrentElementTarget(Element e)/*-{
                                                               this.currentTarget = e;
                                                                   
                                                               //ie don't have a currentEventTarget field on event
                                                               try{
                                                               @com.google.gwt.dom.client.DOMImplTrident::currentEventTarget = e;
                                                               }catch(e){}
                                                               }-*/;

    /**
     * Tell whether ctrl or cmd key is pressed
     * 
     */
    public final boolean isMetaKeyPressed() {
        return getMetaKey() || getCtrlKey();
    }

    /**
     * The mouse position relative to the left edge of the document
     * 
     */
    public final int pageX() {
        return getClientX() + GQuery.document.getScrollLeft();
    }

    /**
     * The mouse position relative to the top edge of the document.
     * 
     */
    public final int pageY() {
        return getClientY() + GQuery.document.getScrollTop();
    }

}