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#ifndef WebFileSystemCallbacksImpl_h
32#define WebFileSystemCallbacksImpl_h
33
34#include "modules/filesystem/FileSystemType.h"
35#include "public/platform/WebFileSystem.h"
36#include "public/platform/WebFileSystemCallbacks.h"
37#include "public/platform/WebVector.h"
38#include "wtf/OwnPtr.h"
39#include "wtf/PassOwnPtr.h"
40
41namespace WebCore {
42class AsyncFileSystemCallbacks;
43class AsyncFileWriterChromium;
44class BlobDataHandle;
45class ScriptExecutionContext;
46}
47
48namespace WebKit {
49
50struct WebFileInfo;
51struct WebFileSystemEntry;
52class WebString;
53class WebURL;
54
55class WebFileSystemCallbacksImpl : public WebFileSystemCallbacks {
56public:
57    WebFileSystemCallbacksImpl(PassOwnPtr<WebCore::AsyncFileSystemCallbacks>, WebCore::ScriptExecutionContext* = 0, WebCore::FileSystemSynchronousType = WebCore::AsynchronousFileSystem);
58    WebFileSystemCallbacksImpl(PassOwnPtr<WebCore::AsyncFileSystemCallbacks>, PassOwnPtr<WebCore::AsyncFileWriterChromium>);
59    virtual ~WebFileSystemCallbacksImpl();
60
61    virtual void didSucceed();
62    virtual void didReadMetadata(const WebFileInfo&);
63    virtual void didCreateSnapshotFile(const WebFileInfo&);
64    virtual void didReadDirectory(const WebVector<WebFileSystemEntry>& entries, bool hasMore);
65    virtual void didOpenFileSystem(const WebString& name, const WebURL& rootURL);
66    virtual void didCreateFileWriter(WebFileWriter*, long long length);
67    virtual void didFail(WebFileError error);
68    virtual bool shouldBlockUntilCompletion() const;
69
70    // This internal overload is used by WorkerFileSystemCallbacksBridge to deliver a blob data handle
71    // created on the main thread to an AsyncFileSystemCallback on a background worker thread. The other
72    // virtual method is invoked by the embedder.
73    void didCreateSnapshotFile(const WebFileInfo&, PassRefPtr<WebCore::BlobDataHandle> snapshot);
74
75private:
76    OwnPtr<WebCore::AsyncFileSystemCallbacks> m_callbacks;
77
78    // Used for worker's openFileSystem callbacks.
79    WebCore::ScriptExecutionContext* m_context;
80    WebCore::FileSystemSynchronousType m_synchronousType;
81
82    // Used for createFileWriter callbacks.
83    OwnPtr<WebCore::AsyncFileWriterChromium> m_writer;
84};
85
86} // namespace WebKit
87
88#endif // WebFileSystemCallbacksImpl_h
89