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 "WorkerAsyncFileSystemChromium.h"
33
34#if ENABLE(FILE_SYSTEM)
35
36#include "AsyncFileSystemCallbacks.h"
37#include "FileMetadata.h"
38#include "FileSystem.h"
39#include "NotImplemented.h"
40#include "WebFileSystem.h"
41#include "WebFileSystemCallbacksImpl.h"
42#include "WebFileWriter.h"
43#include "WebKit.h"
44#include "WebKitClient.h"
45#include "WebWorkerBase.h"
46#include "WorkerAsyncFileWriterChromium.h"
47#include "WorkerContext.h"
48#include "WorkerFileSystemCallbacksBridge.h"
49#include "WorkerScriptController.h"
50#include "WorkerThread.h"
51#include <wtf/text/CString.h>
52
53using namespace WebKit;
54
55namespace WebCore {
56
57static const char fileSystemOperationsMode[] = "fileSystemOperationsMode";
58
59WorkerAsyncFileSystemChromium::WorkerAsyncFileSystemChromium(ScriptExecutionContext* context, AsyncFileSystem::Type type, const String& rootPath, bool synchronous)
60    : AsyncFileSystem(type, rootPath)
61    , m_scriptExecutionContext(context)
62    , m_webFileSystem(WebKit::webKitClient()->fileSystem())
63    , m_workerContext(static_cast<WorkerContext*>(context))
64    , m_synchronous(synchronous)
65{
66    ASSERT(m_webFileSystem);
67    ASSERT(m_scriptExecutionContext->isWorkerContext());
68
69    WorkerLoaderProxy* workerLoaderProxy = &m_workerContext->thread()->workerLoaderProxy();
70    m_worker = static_cast<WebWorkerBase*>(workerLoaderProxy);
71}
72
73WorkerAsyncFileSystemChromium::~WorkerAsyncFileSystemChromium()
74{
75}
76
77bool WorkerAsyncFileSystemChromium::waitForOperationToComplete()
78{
79    if (!m_bridgeForCurrentOperation.get())
80        return false;
81
82    RefPtr<WorkerFileSystemCallbacksBridge> bridge = m_bridgeForCurrentOperation.release();
83    if (m_workerContext->thread()->runLoop().runInMode(m_workerContext, m_modeForCurrentOperation) == MessageQueueTerminated) {
84        bridge->stop();
85        return false;
86    }
87    return true;
88}
89
90void WorkerAsyncFileSystemChromium::move(const String& sourcePath, const String& destinationPath, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
91{
92    createWorkerFileSystemCallbacksBridge(callbacks)->postMoveToMainThread(m_webFileSystem, sourcePath, destinationPath, m_modeForCurrentOperation);
93}
94
95void WorkerAsyncFileSystemChromium::copy(const String& sourcePath, const String& destinationPath, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
96{
97    createWorkerFileSystemCallbacksBridge(callbacks)->postCopyToMainThread(m_webFileSystem, sourcePath, destinationPath, m_modeForCurrentOperation);
98}
99
100void WorkerAsyncFileSystemChromium::remove(const String& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
101{
102    createWorkerFileSystemCallbacksBridge(callbacks)->postRemoveToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
103}
104
105void WorkerAsyncFileSystemChromium::removeRecursively(const String& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
106{
107    createWorkerFileSystemCallbacksBridge(callbacks)->postRemoveRecursivelyToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
108}
109
110void WorkerAsyncFileSystemChromium::readMetadata(const String& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
111{
112    createWorkerFileSystemCallbacksBridge(callbacks)->postReadMetadataToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
113}
114
115void WorkerAsyncFileSystemChromium::createFile(const String& path, bool exclusive, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
116{
117    createWorkerFileSystemCallbacksBridge(callbacks)->postCreateFileToMainThread(m_webFileSystem, path, exclusive, m_modeForCurrentOperation);
118}
119
120void WorkerAsyncFileSystemChromium::createDirectory(const String& path, bool exclusive, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
121{
122    createWorkerFileSystemCallbacksBridge(callbacks)->postCreateDirectoryToMainThread(m_webFileSystem, path, exclusive, m_modeForCurrentOperation);
123}
124
125void WorkerAsyncFileSystemChromium::fileExists(const String& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
126{
127    createWorkerFileSystemCallbacksBridge(callbacks)->postFileExistsToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
128}
129
130void WorkerAsyncFileSystemChromium::directoryExists(const String& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
131{
132    createWorkerFileSystemCallbacksBridge(callbacks)->postDirectoryExistsToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
133}
134
135void WorkerAsyncFileSystemChromium::readDirectory(const String& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
136{
137    createWorkerFileSystemCallbacksBridge(callbacks)->postReadDirectoryToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
138}
139
140class WorkerFileWriterHelperCallbacks : public AsyncFileSystemCallbacks {
141public:
142    static PassOwnPtr<WorkerFileWriterHelperCallbacks> create(AsyncFileWriterClient* client, const String& path, WebKit::WebFileSystem* webFileSystem, PassOwnPtr<WebCore::AsyncFileSystemCallbacks> callbacks, WorkerContext* workerContext)
143    {
144        return adoptPtr(new WorkerFileWriterHelperCallbacks(client, path, webFileSystem, callbacks, workerContext));
145    }
146
147    virtual void didSucceed()
148    {
149        ASSERT_NOT_REACHED();
150    }
151
152    virtual void didReadMetadata(const FileMetadata& metadata)
153    {
154        ASSERT(m_callbacks);
155        if (metadata.type != FileMetadata::TypeFile || metadata.length < 0)
156            m_callbacks->didFail(WebKit::WebFileErrorInvalidState);
157        else {
158            OwnPtr<WorkerAsyncFileWriterChromium> asyncFileWriterChromium = WorkerAsyncFileWriterChromium::create(m_webFileSystem, m_path, m_workerContext, m_client, WorkerAsyncFileWriterChromium::Asynchronous);
159            m_callbacks->didCreateFileWriter(asyncFileWriterChromium.release(), metadata.length);
160        }
161    }
162
163    virtual void didReadDirectoryEntry(const String& name, bool isDirectory)
164    {
165        ASSERT_NOT_REACHED();
166    }
167
168    virtual void didReadDirectoryEntries(bool hasMore)
169    {
170        ASSERT_NOT_REACHED();
171    }
172
173    virtual void didOpenFileSystem(const String&, PassOwnPtr<AsyncFileSystem>)
174    {
175        ASSERT_NOT_REACHED();
176    }
177
178    // Called when an AsyncFileWrter has been created successfully.
179    virtual void didCreateFileWriter(PassOwnPtr<AsyncFileWriter>, long long)
180    {
181        ASSERT_NOT_REACHED();
182    }
183
184    virtual void didFail(int code)
185    {
186        ASSERT(m_callbacks);
187        m_callbacks->didFail(code);
188    }
189
190private:
191    WorkerFileWriterHelperCallbacks(AsyncFileWriterClient* client, const String& path, WebKit::WebFileSystem* webFileSystem, PassOwnPtr<WebCore::AsyncFileSystemCallbacks> callbacks, WorkerContext* workerContext)
192        : m_client(client)
193        , m_path(path)
194        , m_webFileSystem(webFileSystem)
195        , m_callbacks(callbacks)
196        , m_workerContext(workerContext)
197    {
198    }
199
200    AsyncFileWriterClient* m_client;
201    String m_path;
202    WebKit::WebFileSystem* m_webFileSystem;
203    OwnPtr<WebCore::AsyncFileSystemCallbacks> m_callbacks;
204    WorkerContext* m_workerContext;
205};
206
207void WorkerAsyncFileSystemChromium::createWriter(AsyncFileWriterClient* client, const String& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
208{
209    createWorkerFileSystemCallbacksBridge(WorkerFileWriterHelperCallbacks::create(client, path, m_webFileSystem, callbacks, m_workerContext))->postReadMetadataToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
210}
211
212PassRefPtr<WorkerFileSystemCallbacksBridge> WorkerAsyncFileSystemChromium::createWorkerFileSystemCallbacksBridge(PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
213{
214    ASSERT(!m_synchronous || !m_bridgeForCurrentOperation.get());
215
216    m_modeForCurrentOperation = fileSystemOperationsMode;
217    m_modeForCurrentOperation.append(String::number(m_workerContext->thread()->runLoop().createUniqueId()));
218
219    m_bridgeForCurrentOperation = WorkerFileSystemCallbacksBridge::create(m_worker, m_scriptExecutionContext, new WebKit::WebFileSystemCallbacksImpl(callbacks));
220    return m_bridgeForCurrentOperation;
221}
222
223} // namespace WebCore
224
225#endif // ENABLE(FILE_SYSTEM)
226