1/*
2 * Copyright (C) 2009 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this 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 WindowProxy_h
32#define WindowProxy_h
33
34#include "bindings/core/v8/DOMWrapperWorld.h"
35#include "bindings/core/v8/ScopedPersistent.h"
36#include "bindings/core/v8/ScriptState.h"
37#include "bindings/core/v8/WrapperTypeInfo.h"
38#include "platform/weborigin/SecurityOrigin.h"
39#include "wtf/Forward.h"
40#include "wtf/HashMap.h"
41#include "wtf/PassRefPtr.h"
42#include "wtf/RefCounted.h"
43#include "wtf/RefPtr.h"
44#include "wtf/text/AtomicString.h"
45#include <v8.h>
46
47namespace blink {
48
49class LocalDOMWindow;
50class LocalFrame;
51class HTMLDocument;
52class SecurityOrigin;
53
54// WindowProxy represents all the per-global object state for a LocalFrame that
55// persist between navigations.
56class WindowProxy {
57public:
58    static PassOwnPtr<WindowProxy> create(LocalFrame*, DOMWrapperWorld&, v8::Isolate*);
59
60    v8::Local<v8::Context> context() const { return m_scriptState ? m_scriptState->context() : v8::Local<v8::Context>(); }
61    ScriptState* scriptState() const { return m_scriptState.get(); }
62
63    // Update document object of the frame.
64    void updateDocument();
65
66    void namedItemAdded(HTMLDocument*, const AtomicString&);
67    void namedItemRemoved(HTMLDocument*, const AtomicString&);
68
69    // Update the security origin of a document
70    // (e.g., after setting docoument.domain).
71    void updateSecurityOrigin(SecurityOrigin*);
72
73    bool isContextInitialized() { return m_scriptState && !!m_scriptState->perContextData(); }
74    bool isGlobalInitialized() { return !m_global.isEmpty(); }
75
76    bool initializeIfNeeded();
77    void updateDocumentWrapper(v8::Handle<v8::Object> wrapper);
78
79    void clearForNavigation();
80    void clearForClose();
81
82    DOMWrapperWorld& world() { return *m_world; }
83
84private:
85    WindowProxy(LocalFrame*, PassRefPtr<DOMWrapperWorld>, v8::Isolate*);
86    bool initialize();
87
88    enum GlobalDetachmentBehavior {
89        DoNotDetachGlobal,
90        DetachGlobal
91    };
92    void disposeContext(GlobalDetachmentBehavior);
93
94    void setSecurityToken(SecurityOrigin*);
95
96    // The JavaScript wrapper for the document object is cached on the global
97    // object for fast access. UpdateDocumentProperty sets the wrapper
98    // for the current document on the global object. ClearDocumentProperty
99    // deletes the document wrapper from the global object.
100    void updateDocumentProperty();
101    void clearDocumentProperty();
102
103    // Updates Activity Logger for the current context.
104    void updateActivityLogger();
105
106    void createContext();
107    bool installDOMWindow();
108
109    static WindowProxy* enteredIsolatedWorldContext();
110
111    LocalFrame* m_frame;
112    v8::Isolate* m_isolate;
113    RefPtr<ScriptState> m_scriptState;
114    RefPtr<DOMWrapperWorld> m_world;
115    ScopedPersistent<v8::Object> m_global;
116    ScopedPersistent<v8::Object> m_document;
117};
118
119} // namespace blink
120
121#endif // WindowProxy_h
122