1 /*
2 * Copyright (C) 2013 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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #ifndef DocumentLifecycleNotifier_h
27 #define DocumentLifecycleNotifier_h
28
29 #include "core/dom/DocumentLifecycleObserver.h"
30 #include "wtf/PassOwnPtr.h"
31 #include "wtf/TemporaryChange.h"
32
33 namespace WebCore {
34
35 class Document;
36
37 class DocumentLifecycleNotifier : public LifecycleNotifier<Document> {
38 public:
39 static PassOwnPtr<DocumentLifecycleNotifier> create(Document*);
40
41 void notifyDocumentWasDetached();
42 void notifyDocumentWasDisposed();
43
44 virtual void addObserver(Observer*) OVERRIDE;
45 virtual void removeObserver(Observer*) OVERRIDE;
46
47 private:
48 explicit DocumentLifecycleNotifier(Document*);
49
50 typedef HashSet<DocumentLifecycleObserver*> DocumentObserverSet;
51 DocumentObserverSet m_documentObservers;
52 };
53
create(Document * document)54 inline PassOwnPtr<DocumentLifecycleNotifier> DocumentLifecycleNotifier::create(Document* document)
55 {
56 return adoptPtr(new DocumentLifecycleNotifier(document));
57 }
58
notifyDocumentWasDetached()59 inline void DocumentLifecycleNotifier::notifyDocumentWasDetached()
60 {
61 TemporaryChange<IterationType> scope(this->m_iterating, IteratingOverDocumentObservers);
62 for (DocumentObserverSet::iterator i = m_documentObservers.begin(); i != m_documentObservers.end(); ++i)
63 (*i)->documentWasDetached();
64 }
65
notifyDocumentWasDisposed()66 inline void DocumentLifecycleNotifier::notifyDocumentWasDisposed()
67 {
68 TemporaryChange<IterationType> scope(this->m_iterating, IteratingOverDocumentObservers);
69 for (DocumentObserverSet::iterator i = m_documentObservers.begin(); i != m_documentObservers.end(); ++i)
70 (*i)->documentWasDisposed();
71 }
72
73 } // namespace WebCore
74
75 #endif // DocumentLifecycleNotifier_h
76