1 /*

     2  * Copyright (c) 2008, Google Inc. All rights reserved.

     3  * Copyright (C) 2008 Apple Inc. All Rights Reserved.

     4  * 

     5  * Redistribution and use in source and binary forms, with or without

     6  * modification, are permitted provided that the following conditions are

     7  * met:

     8  * 

     9  *     * Redistributions of source code must retain the above copyright

    10  * notice, this list of conditions and the following disclaimer.

    11  *     * Redistributions in binary form must reproduce the above

    12  * copyright notice, this list of conditions and the following disclaimer

    13  * in the documentation and/or other materials provided with the

    14  * distribution.

    15  *     * Neither the name of Google Inc. nor the names of its

    16  * contributors may be used to endorse or promote products derived from

    17  * this software without specific prior written permission.

    18  * 

    19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    30  */

    31 

    32 #include "config.h"

    33 #include "ScriptCachedFrameData.h"

    34 

    35 #include "Frame.h"

    36 #include "GCController.h"

    37 #include "Page.h"

    38 #include "PageGroup.h"

    39 #include <runtime/JSLock.h>

    40 #include "ScriptController.h"

    41 

    42 using namespace JSC;

    43 

    44 namespace WebCore {

    45 

    46 ScriptCachedFrameData::ScriptCachedFrameData(Frame* frame)

    47     : m_domWindow(0)

    48 {

    49     JSLock lock(SilenceAssertionsOnly);

    50 

    51     ScriptController* scriptController = frame->script();

    52     ScriptController::ShellMap& windowShells = scriptController->m_windowShells;

    53 

    54     ScriptController::ShellMap::iterator windowShellsEnd = windowShells.end();

    55     for (ScriptController::ShellMap::iterator iter = windowShells.begin(); iter != windowShellsEnd; ++iter) {

    56         JSDOMWindow* window = iter->second->window();

    57         m_windows.add(iter->first.get(), window);

    58         m_domWindow = window->impl();

    59     }

    60 

    61     scriptController->attachDebugger(0);

    62 }

    63 

    64 DOMWindow* ScriptCachedFrameData::domWindow() const

    65 {

    66     return m_domWindow;

    67 }

    68 

    69 ScriptCachedFrameData::~ScriptCachedFrameData()

    70 {

    71     clear();

    72 }

    73 

    74 void ScriptCachedFrameData::restore(Frame* frame)

    75 {

    76     JSLock lock(SilenceAssertionsOnly);

    77 

    78     ScriptController* scriptController = frame->script();

    79     ScriptController::ShellMap& windowShells = scriptController->m_windowShells;

    80 

    81     ScriptController::ShellMap::iterator windowShellsEnd = windowShells.end();

    82     for (ScriptController::ShellMap::iterator iter = windowShells.begin(); iter != windowShellsEnd; ++iter) {

    83         DOMWrapperWorld* world = iter->first.get();

    84         JSDOMWindowShell* windowShell = iter->second.get();

    85 

    86         if (JSDOMWindow* window = m_windows.get(world))

    87             windowShell->setWindow(window);

    88         else {

    89             windowShell->setWindow(frame->domWindow());

    90 

    91             if (Page* page = frame->page()) {

    92                 scriptController->attachDebugger(windowShell, page->debugger());

    93                 windowShell->window()->setProfileGroup(page->group().identifier());

    94             }

    95         }

    96     }

    97 }

    98 

    99 void ScriptCachedFrameData::clear()

   100 {

   101     if (m_windows.isEmpty())

   102         return;

   103 

   104     JSLock lock(SilenceAssertionsOnly);

   105     m_windows.clear();

   106     gcController().garbageCollectSoon();

   107 }

   108 

   109 } // namespace WebCore