| /* |
| * 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 |