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 #include "config.h"

    32 

    33 #include "V8IsolatedContext.h"

    34 

    35 #include "Frame.h"

    36 #include "FrameLoaderClient.h"

    37 #include "HashMap.h"

    38 #include "ScriptController.h"

    39 #include "V8DOMWindow.h"

    40 #include "V8HiddenPropertyName.h"

    41 

    42 namespace WebCore {

    43 

    44 

    45 void V8IsolatedContext::contextWeakReferenceCallback(v8::Persistent<v8::Value> object, void* isolatedContext)

    46 {

    47     // Our context is going away.  Time to clean up the world.

    48     V8IsolatedContext* context = static_cast<V8IsolatedContext*>(isolatedContext);

    49     delete context;

    50 }

    51 

    52 V8IsolatedContext::V8IsolatedContext(V8Proxy* proxy, int extensionGroup)

    53     : m_world(IsolatedWorld::create())

    54 {

    55     v8::HandleScope scope;

    56     // FIXME: We should be creating a new V8DOMWindowShell here instead of riping out the context.

    57     m_context = SharedPersistent<v8::Context>::create(proxy->windowShell()->createNewContext(v8::Handle<v8::Object>(), extensionGroup));

    58     if (m_context->get().IsEmpty())

    59         return;

    60 

    61     // Run code in the new context.

    62     v8::Context::Scope contextScope(m_context->get());

    63 

    64     getGlobalObject(m_context->get())->SetPointerInInternalField(V8DOMWindow::enteredIsolatedWorldIndex, this);

    65 

    66     V8DOMWindowShell::installHiddenObjectPrototype(m_context->get());

    67     // FIXME: This will go away once we have a windowShell for the isolated world.

    68     proxy->windowShell()->installDOMWindow(m_context->get(), proxy->frame()->domWindow());

    69 

    70     // Using the default security token means that the canAccess is always

    71     // called, which is slow.

    72     // FIXME: Use tokens where possible. This will mean keeping track of all

    73     //        created contexts so that they can all be updated when the

    74     //        document domain

    75     //        changes.

    76     m_context->get()->UseDefaultSecurityToken();

    77 

    78     proxy->frame()->loader()->client()->didCreateIsolatedScriptContext();

    79 }

    80 

    81 void V8IsolatedContext::destroy()

    82 {

    83     m_context->get().MakeWeak(this, &contextWeakReferenceCallback);

    84 }

    85 

    86 V8IsolatedContext::~V8IsolatedContext()

    87 {

    88     m_context->disposeHandle();

    89 }

    90 

    91 } // namespace WebCore