import com.google.gwt.event.dom.client.HasMouseUpHandlers; //导入依赖的package包/类
public void setMouseReleased(JavaScriptObject aValue) {
	if (mouseReleased != aValue) {
		if (mouseUpReg != null) {
			mouseUpReg.removeHandler();
			mouseUpReg = null;
		}
		mouseReleased = aValue;
		if (mouseReleased != null) {
			MouseUpHandler handler = new MouseUpHandler() {
				@Override
				public void onMouseUp(MouseUpEvent event) {
					// if (mouseState == MOUSE.PRESSED)
					// Event.releaseCapture(event.getRelativeElement());
					if (mouseReleased != null) {
						event.stopPropagation();
						mouseState = MOUSE.NULL;
						executeEvent(mouseReleased, EventsPublisher.publish(event));
					}
				}
			};
			if (component instanceof Widget)
				mouseUpReg = ((Widget) component).addDomHandler(handler, MouseUpEvent.getType());
			else if (component instanceof HasMouseUpHandlers)
				mouseUpReg = ((HasMouseUpHandlers) component).addMouseUpHandler(handler);
		}
	}
}