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 "IDBEventDispatcher.h" 31 32 #if ENABLE(INDEXED_DATABASE) 33 34 #include "Event.h" 35 #include "EventTarget.h" 36 37 namespace WebCore { 38 39 bool IDBEventDispatcher::dispatch(Event* event, Vector<RefPtr<EventTarget> >& eventTargets) 40 { 41 size_t size = eventTargets.size(); 42 ASSERT(size); 43 44 event->setEventPhase(Event::CAPTURING_PHASE); 45 for (size_t i = size - 1; i; --i) { // Don't do the first element. 46 event->setCurrentTarget(eventTargets[i].get()); 47 eventTargets[i]->fireEventListeners(event); 48 if (event->propagationStopped()) 49 goto doneDispatching; 50 } 51 52 event->setEventPhase(Event::AT_TARGET); 53 event->setCurrentTarget(eventTargets[0].get()); 54 eventTargets[0]->fireEventListeners(event); 55 if (event->propagationStopped() || !event->bubbles() || event->cancelBubble()) 56 goto doneDispatching; 57 58 event->setEventPhase(Event::BUBBLING_PHASE); 59 for (size_t i = 1; i < size; ++i) { // Don't do the first element. 60 event->setCurrentTarget(eventTargets[i].get()); 61 eventTargets[i]->fireEventListeners(event); 62 if (event->propagationStopped() || event->cancelBubble()) 63 goto doneDispatching; 64 } 65 66 // FIXME: "...However, we also wanted to integrate the window.onerror feature in 67 // HTML5. So after we've fired an "error" event, if .preventDefault() was 68 // never called on the event, we fire an error event on the window (can't 69 // remember if this happens before or after we abort the transaction). 70 // This is a separate event, which for example means that even if you 71 // attach a capturing "error" handler on window, you won't see any events 72 // unless an error really went unhandled. And you also can't call 73 // .preventDefault on the error event fired on the window in order to 74 // prevent the transaction from being aborted. It's purely there for 75 // error reporting and distinctly different from the event propagating to 76 // the window. 77 // 78 // This is similar to how "error" events are handled in workers. 79 // 80 // (I think that so far webkit hasn't implemented the window.onerror 81 // feature yet, so you probably don't want to fire the separate error 82 // event on the window until that has been implemented)." -- Jonas Sicking 83 84 doneDispatching: 85 event->setCurrentTarget(0); 86 event->setEventPhase(0); 87 return !event->defaultPrevented(); 88 } 89 90 } // namespace WebCore 91 92 #endif 93
