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      1 /*
      2  * Copyright (C) 2012 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 "modules/filesystem/DraggedIsolatedFileSystem.h"
     33 
     34 #include "core/dom/ExecutionContext.h"
     35 #include "modules/filesystem/DOMFileSystem.h"
     36 #include "platform/Supplementable.h"
     37 #include "platform/weborigin/SecurityOrigin.h"
     38 #include "wtf/MainThread.h"
     39 
     40 namespace WebCore {
     41 
     42 DraggedIsolatedFileSystem::~DraggedIsolatedFileSystem()
     43 {
     44 }
     45 
     46 DOMFileSystem* DraggedIsolatedFileSystem::getDOMFileSystem(DataObject* host, ExecutionContext* executionContext)
     47 {
     48     DraggedIsolatedFileSystem* draggedIsolatedFileSystem = from(host);
     49     if (!draggedIsolatedFileSystem)
     50         return 0;
     51     if (!draggedIsolatedFileSystem->m_filesystem)
     52         draggedIsolatedFileSystem->m_filesystem = DOMFileSystem::createIsolatedFileSystem(executionContext, host->filesystemId());
     53     return draggedIsolatedFileSystem->m_filesystem.get();
     54 }
     55 
     56 // static
     57 const char* DraggedIsolatedFileSystem::supplementName()
     58 {
     59     ASSERT(isMainThread());
     60     return "DraggedIsolatedFileSystem";
     61 }
     62 
     63 DraggedIsolatedFileSystem* DraggedIsolatedFileSystem::from(DataObject* dataObject)
     64 {
     65     return static_cast<DraggedIsolatedFileSystem*>(WillBeHeapSupplement<DataObject>::from(dataObject, supplementName()));
     66 }
     67 
     68 DraggedIsolatedFileSystem::DraggedIsolatedFileSystem(DataObject& host, const String& filesystemId)
     69 {
     70     host.setFilesystemId(filesystemId);
     71 }
     72 
     73 void DraggedIsolatedFileSystem::trace(Visitor* visitor)
     74 {
     75     visitor->trace(m_filesystem);
     76     WillBeHeapSupplement<DataObject>::trace(visitor);
     77 }
     78 
     79 } // namespace WebCore
     80