/*
* Copyright 2010 Daniel Kurka
*
* 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.
*/
package de.kurka.gwt.mobile.ui.client.widget;
/**
* @author Daniel Kurka
*
*/
public class WidgetUtil {
private static boolean touchEvents = false;
private static boolean alreadyTestedForTouchEvents = false;
private static native boolean _hasTouchEvent()/*-{
var ua = window.navigator.userAgent.toLowerCase();
if (ua.indexOf('android') != -1) { return true; }
if (ua.indexOf('iphone') != -1) { return true; }
if (ua.indexOf('ipad') != -1) { return true; }
return false;
}-*/;
/**
*
*/
public static boolean hasTouchEvents() {
if (!alreadyTestedForTouchEvents) {
touchEvents = _hasTouchEvent();
alreadyTestedForTouchEvents = true;
}
return touchEvents;
}
}
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