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1 /*
2  * Copyright (C) 2010 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 "LocalFileSystem.h"
33 
34 #if ENABLE(FILE_SYSTEM)
35 
36 #include "AsyncFileSystem.h"
37 #include "ErrorCallback.h"
38 #include "FileSystemCallback.h"
39 #include "FileSystemCallbacks.h"
40 #include "PlatformString.h"
41 #include "WebFileSystem.h"
42 #include "WebFileSystemCallbacksImpl.h"
43 #include "WebFrameClient.h"
44 #include "WebFrameImpl.h"
45 #include "WebWorkerImpl.h"
46 #include "WorkerContext.h"
47 #include "WorkerThread.h"
48 #include <wtf/Threading.h>
49 
50 using namespace WebKit;
51 
52 namespace WebCore {
53 
localFileSystem()54 LocalFileSystem& LocalFileSystem::localFileSystem()
55 {
56     AtomicallyInitializedStatic(LocalFileSystem*, localFileSystem = new LocalFileSystem(""));
57     return *localFileSystem;
58 }
59 
60 namespace {
61 
62 enum CreationFlag {
63     OpenExisting,
64     CreateIfNotPresent
65 };
66 
67 } // namespace
68 
openFileSystemHelper(ScriptExecutionContext * context,AsyncFileSystem::Type type,PassOwnPtr<AsyncFileSystemCallbacks> callbacks,bool synchronous,long long size,CreationFlag create)69 static void openFileSystemHelper(ScriptExecutionContext* context, AsyncFileSystem::Type type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool synchronous, long long size, CreationFlag create)
70 {
71     ASSERT(context);
72     if (context->isDocument()) {
73         Document* document = static_cast<Document*>(context);
74         WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
75         webFrame->client()->openFileSystem(webFrame, static_cast<WebFileSystem::Type>(type), size, create == CreateIfNotPresent, new WebFileSystemCallbacksImpl(callbacks, type));
76     } else {
77         WorkerContext* workerContext = static_cast<WorkerContext*>(context);
78         WorkerLoaderProxy* workerLoaderProxy = &workerContext->thread()->workerLoaderProxy();
79         WebWorkerBase* webWorker = static_cast<WebWorkerBase*>(workerLoaderProxy);
80         webWorker->openFileSystemForWorker(static_cast<WebFileSystem::Type>(type), size, create == CreateIfNotPresent, new WebFileSystemCallbacksImpl(callbacks, type, context, synchronous), synchronous);
81     }
82 }
83 
readFileSystem(ScriptExecutionContext * context,AsyncFileSystem::Type type,PassOwnPtr<AsyncFileSystemCallbacks> callbacks,bool synchronous)84 void LocalFileSystem::readFileSystem(ScriptExecutionContext* context, AsyncFileSystem::Type type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool synchronous)
85 {
86     openFileSystemHelper(context, type, callbacks, synchronous, 0, OpenExisting);
87 }
88 
requestFileSystem(ScriptExecutionContext * context,AsyncFileSystem::Type type,long long size,PassOwnPtr<AsyncFileSystemCallbacks> callbacks,bool synchronous)89 void LocalFileSystem::requestFileSystem(ScriptExecutionContext* context, AsyncFileSystem::Type type, long long size, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, bool synchronous)
90 {
91     openFileSystemHelper(context, type, callbacks, synchronous, size, CreateIfNotPresent);
92 }
93 
94 } // namespace WebCore
95 
96 #endif // ENABLE(FILE_SYSTEM)
97