Home | History | Annotate | Download | only in v8 
      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 V8WindowShell_h
     32 #define V8WindowShell_h
     33 
     34 #include "bindings/v8/DOMWrapperWorld.h"
     35 #include "bindings/v8/ScopedPersistent.h"
     36 #include "bindings/v8/V8PerContextData.h"
     37 #include "bindings/v8/WrapperTypeInfo.h"
     38 #include "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 
     47 namespace WebCore {
     48 
     49 class DOMWindow;
     50 class Frame;
     51 class HTMLDocument;
     52 
     53 // V8WindowShell represents all the per-global object state for a Frame that
     54 // persist between navigations.
     55 class V8WindowShell {
     56 public:
     57     static PassOwnPtr<V8WindowShell> create(Frame*, PassRefPtr<DOMWrapperWorld>, v8::Isolate*);
     58 
     59     v8::Local<v8::Context> context() const { return m_context.newLocal(m_isolate); }
     60 
     61     // Update document object of the frame.
     62     void updateDocument();
     63 
     64     void namedItemAdded(HTMLDocument*, const AtomicString&);
     65     void namedItemRemoved(HTMLDocument*, const AtomicString&);
     66 
     67     // Update the security origin of a document
     68     // (e.g., after setting docoument.domain).
     69     void updateSecurityOrigin();
     70 
     71     bool isContextInitialized() { return !m_context.isEmpty(); }
     72     bool isGlobalInitialized() { return !m_global.isEmpty(); }
     73 
     74     bool initializeIfNeeded();
     75     void updateDocumentWrapper(v8::Handle<v8::Object> wrapper);
     76 
     77     void clearForNavigation();
     78     void clearForClose(bool destroyGlobal);
     79 
     80     DOMWrapperWorld* world() { return m_world.get(); }
     81 
     82 private:
     83     V8WindowShell(Frame*, PassRefPtr<DOMWrapperWorld>, v8::Isolate*);
     84 
     85     void disposeContext();
     86 
     87     void setSecurityToken();
     88 
     89     // The JavaScript wrapper for the document object is cached on the global
     90     // object for fast access. UpdateDocumentProperty sets the wrapper
     91     // for the current document on the global object. ClearDocumentProperty
     92     // deletes the document wrapper from the global object.
     93     void updateDocumentProperty();
     94     void clearDocumentProperty();
     95 
     96     void createContext();
     97     bool installDOMWindow();
     98 
     99     static V8WindowShell* enteredIsolatedWorldContext();
    100 
    101     Frame* m_frame;
    102     RefPtr<DOMWrapperWorld> m_world;
    103     v8::Isolate* m_isolate;
    104 
    105     OwnPtr<V8PerContextData> m_perContextData;
    106 
    107     ScopedPersistent<v8::Context> m_context;
    108     ScopedPersistent<v8::Object> m_global;
    109     ScopedPersistent<v8::Object> m_document;
    110 };
    111 
    112 } // namespace WebCore
    113 
    114 #endif // V8WindowShell_h
    115