1/*
2 * Copyright (C) 2012 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 CustomElementRegistry_h
32#define CustomElementRegistry_h
33
34#if ENABLE(CUSTOM_ELEMENTS)
35
36#include "ContextDestructionObserver.h"
37#include "ExceptionCode.h"
38#include "QualifiedName.h"
39#include "ScriptValue.h"
40#include "Supplementable.h"
41#include <wtf/HashSet.h>
42#include <wtf/ListHashSet.h>
43#include <wtf/PassRefPtr.h>
44#include <wtf/RefCounted.h>
45#include <wtf/RefPtr.h>
46#include <wtf/Vector.h>
47#include <wtf/text/AtomicStringHash.h>
48
49namespace WebCore {
50
51class CustomElementConstructor;
52class Dictionary;
53class Document;
54class Element;
55class ScriptExecutionContext;
56class QualifiedName;
57
58class CustomElementInvocation {
59public:
60    explicit CustomElementInvocation(PassRefPtr<Element>);
61    ~CustomElementInvocation();
62
63    Element* element() const { return m_element.get(); }
64
65private:
66    RefPtr<Element> m_element;
67};
68
69class CustomElementRegistry : public RefCounted<CustomElementRegistry> , public ContextDestructionObserver {
70    WTF_MAKE_NONCOPYABLE(CustomElementRegistry); WTF_MAKE_FAST_ALLOCATED;
71public:
72    class CallbackDeliveryScope {
73    public:
74        CallbackDeliveryScope() { }
75        ~CallbackDeliveryScope() { CustomElementRegistry::deliverAllLifecycleCallbacksIfNeeded(); }
76    };
77
78    explicit CustomElementRegistry(Document*);
79    ~CustomElementRegistry();
80
81    PassRefPtr<CustomElementConstructor> registerElement(WebCore::ScriptState*, const AtomicString& name, const Dictionary& options, ExceptionCode&);
82    PassRefPtr<CustomElementConstructor> findFor(Element*) const;
83    PassRefPtr<CustomElementConstructor> find(const QualifiedName& elementName, const QualifiedName& localName) const;
84    PassRefPtr<Element> createElement(const QualifiedName& localName, const AtomicString& typeExtension) const;
85
86    Document* document() const;
87
88    void didGiveTypeExtension(Element*);
89    void didCreateElement(Element*);
90
91    static void deliverAllLifecycleCallbacks();
92    static void deliverAllLifecycleCallbacksIfNeeded();
93
94private:
95    typedef HashMap<std::pair<QualifiedName, QualifiedName>, RefPtr<CustomElementConstructor> > ConstructorMap;
96    typedef HashSet<AtomicString> NameSet;
97    typedef ListHashSet<CustomElementRegistry*> InstanceSet;
98
99    static bool isValidName(const AtomicString&);
100    static InstanceSet& activeCustomElementRegistries();
101
102    void activate(const CustomElementInvocation&);
103    void deactivate();
104    void deliverLifecycleCallbacks();
105
106    ConstructorMap m_constructors;
107    NameSet m_names;
108    Vector<CustomElementInvocation> m_invocations;
109};
110
111inline void CustomElementRegistry::deliverAllLifecycleCallbacksIfNeeded()
112{
113    if (!activeCustomElementRegistries().isEmpty())
114        deliverAllLifecycleCallbacks();
115    ASSERT(activeCustomElementRegistries().isEmpty());
116}
117
118inline CustomElementRegistry::InstanceSet& CustomElementRegistry::activeCustomElementRegistries()
119{
120    DEFINE_STATIC_LOCAL(InstanceSet, activeInstances, ());
121    return activeInstances;
122}
123
124
125} // namespace WebCore
126
127#endif // ENABLE(CUSTOM_ELEMENTS)
128#endif
129