1 /*
2 * Copyright 2012 Daniel Kurka
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5 * use this file except in compliance with the License. You may obtain a copy of
6 * the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations under
14 * the License.
15 */
16 package com.googlecode.mgwt.dom.client.recognizer;
17
18 import com.google.gwt.core.client.Scheduler;
19 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
20 import com.google.gwt.event.shared.GwtEvent;
21 import com.google.gwt.event.shared.HasHandlers;
22
23 /**
24 * Propagate events from a source. There is an issue on mobile webkit which gets
25 * confused about events if an alert is shown from an event handler, see:
26 * http://
27 * blog.daniel-kurka.de/2012/05/mobile-webkit-alert-dialog-breaks-touch.html
28 *
29 * This class provides a workaround by propagating events with a
30 * ScheduledCommand
31 *
32 * @author Daniel Kurka
33 *
34 */
35 public class EventPropagatorMobileImpl implements EventPropagator {
36
37 private static class SCommand implements ScheduledCommand {
38 private final HasHandlers source;
39 private final GwtEvent<?> event;
40
41 public SCommand(HasHandlers source, GwtEvent<?> event) {
42 this.source = source;
43 this.event = event;
44 }
45
46 @Override
47 public void execute() {
48 source.fireEvent(event);
49
50 }
51
52 }
53
54 /*
55 * (non-Javadoc)
56 * @see com.googlecode.mgwt.dom.client.recognizer.EventPropagator#fireEvent(com.google.gwt.event.shared.HasHandlers, com.google.gwt.event.shared.GwtEvent)
57 */
58 @Override
59 public void fireEvent(final HasHandlers source, final GwtEvent<?> event) {
60 // see issue 135
61 // http://code.google.com/p/mgwt/issues/detail?id=135
62 Scheduler.get().scheduleDeferred(new SCommand(source, event));
63
64 }
65
66 }