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 #include "StorageEventDispatcherImpl.h"

    33 

    34 #if ENABLE(DOM_STORAGE)

    35 

    36 #include "DOMWindow.h"

    37 #include "EventNames.h"

    38 #include "Frame.h"

    39 #include "KURL.h"

    40 #include "Page.h"

    41 #include "PageGroup.h"

    42 #include "SecurityOrigin.h"

    43 #include "StorageEvent.h"

    44 

    45 namespace WebCore {

    46 

    47 StorageEventDispatcherImpl::StorageEventDispatcherImpl(const String& groupName)

    48     : m_pageGroup(PageGroup::pageGroup(groupName))

    49 {

    50     ASSERT(m_pageGroup);

    51 }

    52 

    53 void StorageEventDispatcherImpl::dispatchStorageEvent(const String& key, const String& oldValue,

    54                                                       const String& newValue, SecurityOrigin* securityOrigin,

    55                                                       const KURL& url, StorageType storageType)

    56 {

    57     // FIXME: Implement

    58     if (storageType == SessionStorage)

    59         return;

    60 

    61     // We need to copy all relevant frames from every page to a vector since sending the event to one frame might mutate the frame tree

    62     // of any given page in the group or mutate the page group itself.

    63     Vector<RefPtr<Frame> > frames;

    64 

    65     const HashSet<Page*>& pages = m_pageGroup->pages();

    66     HashSet<Page*>::const_iterator end = pages.end();

    67     for (HashSet<Page*>::const_iterator it = pages.begin(); it != end; ++it) {

    68         for (Frame* frame = (*it)->mainFrame(); frame; frame = frame->tree()->traverseNext()) {

    69             if (frame->document()->securityOrigin()->equal(securityOrigin))

    70                 frames.append(frame);

    71         }

    72     }

    73 

    74     for (unsigned i = 0; i < frames.size(); ++i) {

    75         ExceptionCode ec = 0;

    76         Storage* storage = frames[i]->domWindow()->localStorage(ec);

    77         if (!ec)

    78             frames[i]->document()->dispatchWindowEvent(StorageEvent::create(eventNames().storageEvent, key, oldValue, newValue, url, storage));

    79     }

    80 }

    81 

    82 } // namespace WebCore

    83 

    84 #endif // ENABLE(DOM_STORAGE)