litesoft
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// This Source Code is Copyright & Licenced as indicated below package org.litesoft.GWT.client.widgets.nonpublic.external; /* * Copyright 2006 Mat Gessel <mat.gessel@gmail.com> * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ import com.google.gwt.user.client.*; import com.google.gwt.user.client.ui.*; /** * A widget wrapper which can process the * wrapped widget's events. */ public abstract class EventWrapper extends Composite { private Widget m_widget; /** * Default constructor for convenience. You will need to call * {@link #initWidget(Widget)} before calling any {@link Widget} methods. */ public EventWrapper() { } public EventWrapper( Widget w, int eventMask ) { initWidget( w ); sinkEvents( eventMask ); } /* * (non-Javadoc) * @see com.google.gwt.user.client.ui.Composite#initWidget(com.google.gwt.user.client.ui.Widget) */ @Override protected void initWidget( Widget widget ) { super.initWidget( widget ); m_widget = widget; } @Override protected Widget getWidget() { return m_widget; } /* * (non-Javadoc) * Hijacks events intended for the wrapped widget's element. * @see com.google.gwt.user.client.ui.Widget#onAttach() */ @Override protected void onAttach() { super.onAttach(); DOM.setEventListener( getElement(), this ); } /** * Override to process browser events. Don't forget to call super * implementation if you want the wrapped widget to process events also. * {@inheritDoc} */ @Override public void onBrowserEvent( Event event ) { m_widget.onBrowserEvent( event ); } } |