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 "DOMFileSystem.h"
33
34 #if ENABLE(FILE_SYSTEM)
35
36 #include "AsyncFileSystem.h"
37 #include "DOMFilePath.h"
38 #include "DirectoryEntry.h"
39 #include "ErrorCallback.h"
40 #include "File.h"
41 #include "FileEntry.h"
42 #include "FileMetadata.h"
43 #include "FileSystemCallbacks.h"
44 #include "FileWriter.h"
45 #include "FileWriterBaseCallback.h"
46 #include "FileWriterCallback.h"
47 #include "MetadataCallback.h"
48 #include "ScriptExecutionContext.h"
49 #include <wtf/OwnPtr.h>
50
51 namespace WebCore {
52
DOMFileSystem(ScriptExecutionContext * context,const String & name,PassOwnPtr<AsyncFileSystem> asyncFileSystem)53 DOMFileSystem::DOMFileSystem(ScriptExecutionContext* context, const String& name, PassOwnPtr<AsyncFileSystem> asyncFileSystem)
54 : DOMFileSystemBase(context, name, asyncFileSystem)
55 , ActiveDOMObject(context, this)
56 {
57 }
58
root()59 PassRefPtr<DirectoryEntry> DOMFileSystem::root()
60 {
61 return DirectoryEntry::create(this, DOMFilePath::root);
62 }
63
stop()64 void DOMFileSystem::stop()
65 {
66 m_asyncFileSystem->stop();
67 }
68
hasPendingActivity() const69 bool DOMFileSystem::hasPendingActivity() const
70 {
71 return m_asyncFileSystem->hasPendingActivity();
72 }
73
contextDestroyed()74 void DOMFileSystem::contextDestroyed()
75 {
76 m_asyncFileSystem->stop();
77 ActiveDOMObject::contextDestroyed();
78 }
79
80 namespace {
81
82 class ConvertToFileWriterCallback : public FileWriterBaseCallback {
83 public:
create(PassRefPtr<FileWriterCallback> callback)84 static PassRefPtr<ConvertToFileWriterCallback> create(PassRefPtr<FileWriterCallback> callback)
85 {
86 return adoptRef(new ConvertToFileWriterCallback(callback));
87 }
88
handleEvent(FileWriterBase * fileWriterBase)89 bool handleEvent(FileWriterBase* fileWriterBase)
90 {
91 return m_callback->handleEvent(static_cast<FileWriter*>(fileWriterBase));
92 }
93 private:
ConvertToFileWriterCallback(PassRefPtr<FileWriterCallback> callback)94 ConvertToFileWriterCallback(PassRefPtr<FileWriterCallback> callback)
95 : m_callback(callback)
96 {
97 }
98 RefPtr<FileWriterCallback> m_callback;
99 };
100
101 }
102
createWriter(const FileEntry * fileEntry,PassRefPtr<FileWriterCallback> successCallback,PassRefPtr<ErrorCallback> errorCallback)103 void DOMFileSystem::createWriter(const FileEntry* fileEntry, PassRefPtr<FileWriterCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
104 {
105 ASSERT(fileEntry);
106
107 String platformPath = m_asyncFileSystem->virtualToPlatformPath(fileEntry->fullPath());
108
109 RefPtr<FileWriter> fileWriter = FileWriter::create(scriptExecutionContext());
110 RefPtr<FileWriterBaseCallback> conversionCallback = ConvertToFileWriterCallback::create(successCallback);
111 OwnPtr<FileWriterBaseCallbacks> callbacks = FileWriterBaseCallbacks::create(fileWriter, conversionCallback, errorCallback);
112 m_asyncFileSystem->createWriter(fileWriter.get(), platformPath, callbacks.release());
113 }
114
115 namespace {
116
117 class GetPathCallback : public FileSystemCallbacksBase {
118 public:
create(PassRefPtr<DOMFileSystem> filesystem,const String & path,PassRefPtr<FileCallback> successCallback,PassRefPtr<ErrorCallback> errorCallback)119 static PassOwnPtr<GetPathCallback> create(PassRefPtr<DOMFileSystem> filesystem, const String& path, PassRefPtr<FileCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
120 {
121 return adoptPtr(new GetPathCallback(filesystem, path, successCallback, errorCallback));
122 }
123
didReadMetadata(const FileMetadata & metadata)124 virtual void didReadMetadata(const FileMetadata& metadata)
125 {
126 if (!metadata.platformPath.isEmpty())
127 m_path = metadata.platformPath;
128
129 m_filesystem->scheduleCallback(m_successCallback.release(), File::create(m_path));
130 }
131
132 private:
GetPathCallback(PassRefPtr<DOMFileSystem> filesystem,const String & path,PassRefPtr<FileCallback> successCallback,PassRefPtr<ErrorCallback> errorCallback)133 GetPathCallback(PassRefPtr<DOMFileSystem> filesystem, const String& path, PassRefPtr<FileCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
134 : FileSystemCallbacksBase(errorCallback)
135 , m_filesystem(filesystem)
136 , m_path(path)
137 , m_successCallback(successCallback)
138 {
139 }
140
141 RefPtr<DOMFileSystem> m_filesystem;
142 String m_path;
143 RefPtr<FileCallback> m_successCallback;
144 };
145
146 } // namespace
147
createFile(const FileEntry * fileEntry,PassRefPtr<FileCallback> successCallback,PassRefPtr<ErrorCallback> errorCallback)148 void DOMFileSystem::createFile(const FileEntry* fileEntry, PassRefPtr<FileCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
149 {
150 String platformPath = m_asyncFileSystem->virtualToPlatformPath(fileEntry->fullPath());
151
152 m_asyncFileSystem->readMetadata(platformPath, GetPathCallback::create(this, platformPath, successCallback, errorCallback));
153 }
154
155 } // namespace WebCore
156
157 #endif // ENABLE(FILE_SYSTEM)
158