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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef V8DOMWindowShell_h
#define V8DOMWindowShell_h
#include "V8Index.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class DOMWindow;
class Frame;
class String;
// V8WindowShell represents all the per-global object state for a Frame that
// persist between navigations.
class V8DOMWindowShell : public RefCounted<V8DOMWindowShell> {
public:
static PassRefPtr<V8DOMWindowShell> create(Frame*);
v8::Handle<v8::Context> context() const { return m_context; }
// Update document object of the frame.
void updateDocument();
// Update the security origin of a document
// (e.g., after setting docoument.domain).
void updateSecurityOrigin();
bool isContextInitialized();
v8::Persistent<v8::Context> createNewContext(v8::Handle<v8::Object> global, int extensionGroup);
static bool installDOMWindow(v8::Handle<v8::Context> context, DOMWindow*);
void initContextIfNeeded();
void updateDocumentWrapper(v8::Handle<v8::Object> wrapper);
void clearForNavigation();
void clearForClose();
void destroyGlobal();
static v8::Handle<v8::Value> getHiddenObjectPrototype(v8::Handle<v8::Context>);
// WARNING: Call |installHiddenObjectPrototype| only on fresh contexts!
static void installHiddenObjectPrototype(v8::Handle<v8::Context>);
// To create JS Wrapper objects, we create a cache of a 'boiler plate'
// object, and then simply Clone that object each time we need a new one.
// This is faster than going through the full object creation process.
v8::Local<v8::Object> createWrapperFromCache(V8ClassIndex::V8WrapperType type)
{
int classIndex = V8ClassIndex::ToInt(type);
v8::Local<v8::Object> clone(m_wrapperBoilerplates->CloneElementAt(classIndex));
return clone.IsEmpty() ? createWrapperFromCacheSlowCase(type) : clone;
}
static void setLocation(DOMWindow*, const String& relativeURL);
private:
V8DOMWindowShell(Frame*);
void disposeContextHandles();
void setSecurityToken();
void clearDocumentWrapper();
// The JavaScript wrapper for the document object is cached on the global
// object for fast access. UpdateDocumentWrapperCache sets the wrapper
// for the current document on the global object. ClearDocumentWrapperCache
// deletes the document wrapper from the global object.
void updateDocumentWrapperCache();
void clearDocumentWrapperCache();
v8::Local<v8::Object> createWrapperFromCacheSlowCase(V8ClassIndex::V8WrapperType);
Frame* m_frame;
// For each possible type of wrapper, we keep a boilerplate object.
// The boilerplate is used to create additional wrappers of the same
// type. We keep a single persistent handle to an array of the
// activated boilerplates.
v8::Persistent<v8::Array> m_wrapperBoilerplates;
v8::Persistent<v8::Context> m_context;
v8::Persistent<v8::Object> m_global;
v8::Persistent<v8::Object> m_document;
};
} // namespace WebCore
#endif // V8DOMWindowShell_h
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