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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  *
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
12  *    in the documentation and/or other materials provided with the
13  *    distribution.
14  * 3. Neither the name of Google Inc. nor the names of its contributors
15  *    may be used to endorse or promote products derived from this
16  *    software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #ifndef CustomElementCallbackScheduler_h
32 #define CustomElementCallbackScheduler_h
33 
34 #include "core/dom/custom/CustomElementCallbackQueue.h"
35 #include "wtf/HashMap.h"
36 #include "wtf/OwnPtr.h"
37 #include "wtf/PassRefPtr.h"
38 #include "wtf/text/AtomicString.h"
39 
40 namespace WebCore {
41 
42 class CustomElementLifecycleCallbacks;
43 class Element;
44 
45 class CustomElementCallbackScheduler {
46 public:
47     static void scheduleAttributeChangedCallback(PassRefPtr<CustomElementLifecycleCallbacks>, PassRefPtr<Element>, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue);
48     static void scheduleCreatedCallback(PassRefPtr<CustomElementLifecycleCallbacks>, PassRefPtr<Element>);
49     static void scheduleAttachedCallback(PassRefPtr<CustomElementLifecycleCallbacks>, PassRefPtr<Element>);
50     static void scheduleDetachedCallback(PassRefPtr<CustomElementLifecycleCallbacks>, PassRefPtr<Element>);
51 
52 protected:
53     friend class CustomElementCallbackDispatcher;
54     static void clearElementCallbackQueueMap();
55 
56 private:
CustomElementCallbackScheduler()57     CustomElementCallbackScheduler() { }
58 
59     static CustomElementCallbackScheduler& instance();
60 
61     CustomElementCallbackQueue* ensureCallbackQueue(PassRefPtr<Element>);
62     CustomElementCallbackQueue* schedule(PassRefPtr<Element>);
63     CustomElementCallbackQueue* scheduleInCurrentElementQueue(PassRefPtr<Element>);
64 
65     typedef HashMap<Element*, OwnPtr<CustomElementCallbackQueue> > ElementCallbackQueueMap;
66     ElementCallbackQueueMap m_elementCallbackQueueMap;
67 };
68 
69 }
70 
71 #endif // CustomElementCallbackScheduler_h
72