1 /*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "config.h"
30 #include "modules/indexeddb/IDBEventDispatcher.h"
31
32 #include "core/events/Event.h"
33 #include "core/events/EventTarget.h"
34
35 namespace WebCore {
36
dispatch(Event * event,Vector<RefPtr<EventTarget>> & eventTargets)37 bool IDBEventDispatcher::dispatch(Event* event, Vector<RefPtr<EventTarget> >& eventTargets)
38 {
39 size_t size = eventTargets.size();
40 ASSERT(size);
41
42 event->setEventPhase(Event::CAPTURING_PHASE);
43 for (size_t i = size - 1; i; --i) { // Don't do the first element.
44 event->setCurrentTarget(eventTargets[i].get());
45 eventTargets[i]->fireEventListeners(event);
46 if (event->propagationStopped())
47 goto doneDispatching;
48 }
49
50 event->setEventPhase(Event::AT_TARGET);
51 event->setCurrentTarget(eventTargets[0].get());
52 eventTargets[0]->fireEventListeners(event);
53 if (event->propagationStopped() || !event->bubbles() || event->cancelBubble())
54 goto doneDispatching;
55
56 event->setEventPhase(Event::BUBBLING_PHASE);
57 for (size_t i = 1; i < size; ++i) { // Don't do the first element.
58 event->setCurrentTarget(eventTargets[i].get());
59 eventTargets[i]->fireEventListeners(event);
60 if (event->propagationStopped() || event->cancelBubble())
61 goto doneDispatching;
62 }
63
64 // FIXME: "...However, we also wanted to integrate the window.onerror feature in
65 // HTML5. So after we've fired an "error" event, if .preventDefault() was
66 // never called on the event, we fire an error event on the window (can't
67 // remember if this happens before or after we abort the transaction).
68 // This is a separate event, which for example means that even if you
69 // attach a capturing "error" handler on window, you won't see any events
70 // unless an error really went unhandled. And you also can't call
71 // .preventDefault on the error event fired on the window in order to
72 // prevent the transaction from being aborted. It's purely there for
73 // error reporting and distinctly different from the event propagating to
74 // the window.
75 //
76 // This is similar to how "error" events are handled in workers.
77 //
78 // (I think that so far webkit hasn't implemented the window.onerror
79 // feature yet, so you probably don't want to fire the separate error
80 // event on the window until that has been implemented)." -- Jonas Sicking
81
82 doneDispatching:
83 event->setCurrentTarget(0);
84 event->setEventPhase(0);
85 return !event->defaultPrevented();
86 }
87
88 } // namespace WebCore
89