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 FileSystemCallbacks_h
32#define FileSystemCallbacks_h
33
34#include "modules/filesystem/EntriesCallback.h"
35#include "platform/AsyncFileSystemCallbacks.h"
36#include "platform/FileSystemType.h"
37#include "wtf/Vector.h"
38#include "wtf/text/WTFString.h"
39
40namespace blink {
41
42class DOMFileSystemBase;
43class DirectoryReaderBase;
44class EntriesCallback;
45class EntryCallback;
46class ErrorCallback;
47class FileCallback;
48struct FileMetadata;
49class FileSystemCallback;
50class FileWriterBase;
51class FileWriterBaseCallback;
52class MetadataCallback;
53class ExecutionContext;
54class VoidCallback;
55
56class FileSystemCallbacksBase : public AsyncFileSystemCallbacks {
57public:
58    virtual ~FileSystemCallbacksBase();
59
60    // For ErrorCallback.
61    virtual void didFail(int code) OVERRIDE FINAL;
62
63    // Other callback methods are implemented by each subclass.
64
65protected:
66    FileSystemCallbacksBase(ErrorCallback*, DOMFileSystemBase*, ExecutionContext*);
67
68    bool shouldScheduleCallback() const;
69
70#if !ENABLE(OILPAN)
71    template <typename CB, typename CBArg>
72    void handleEventOrScheduleCallback(RawPtr<CB>, RawPtr<CBArg>);
73#endif
74
75    template <typename CB, typename CBArg>
76    void handleEventOrScheduleCallback(RawPtr<CB>, CBArg*);
77
78    template <typename CB, typename CBArg>
79    void handleEventOrScheduleCallback(RawPtr<CB>, PassRefPtrWillBeRawPtr<CBArg>);
80
81    template <typename CB>
82    void handleEventOrScheduleCallback(RawPtr<CB>);
83
84    Persistent<ErrorCallback> m_errorCallback;
85    Persistent<DOMFileSystemBase> m_fileSystem;
86    RefPtrWillBePersistent<ExecutionContext> m_executionContext;
87    int m_asyncOperationId;
88};
89
90// Subclasses ----------------------------------------------------------------
91
92class EntryCallbacks FINAL : public FileSystemCallbacksBase {
93public:
94    static PassOwnPtr<AsyncFileSystemCallbacks> create(EntryCallback*, ErrorCallback*, ExecutionContext*, DOMFileSystemBase*, const String& expectedPath, bool isDirectory);
95    virtual void didSucceed() OVERRIDE;
96
97private:
98    EntryCallbacks(EntryCallback*, ErrorCallback*, ExecutionContext*, DOMFileSystemBase*, const String& expectedPath, bool isDirectory);
99    Persistent<EntryCallback> m_successCallback;
100    String m_expectedPath;
101    bool m_isDirectory;
102};
103
104class EntriesCallbacks FINAL : public FileSystemCallbacksBase {
105public:
106    static PassOwnPtr<AsyncFileSystemCallbacks> create(EntriesCallback*, ErrorCallback*, ExecutionContext*, DirectoryReaderBase*, const String& basePath);
107    virtual void didReadDirectoryEntry(const String& name, bool isDirectory) OVERRIDE;
108    virtual void didReadDirectoryEntries(bool hasMore) OVERRIDE;
109
110private:
111    EntriesCallbacks(EntriesCallback*, ErrorCallback*, ExecutionContext*, DirectoryReaderBase*, const String& basePath);
112    Persistent<EntriesCallback> m_successCallback;
113    Persistent<DirectoryReaderBase> m_directoryReader;
114    String m_basePath;
115    PersistentHeapVector<Member<Entry> > m_entries;
116};
117
118class FileSystemCallbacks FINAL : public FileSystemCallbacksBase {
119public:
120    static PassOwnPtr<AsyncFileSystemCallbacks> create(FileSystemCallback*, ErrorCallback*, ExecutionContext*, FileSystemType);
121    virtual void didOpenFileSystem(const String& name, const KURL& rootURL) OVERRIDE;
122
123private:
124    FileSystemCallbacks(FileSystemCallback*, ErrorCallback*, ExecutionContext*, FileSystemType);
125    Persistent<FileSystemCallback> m_successCallback;
126    FileSystemType m_type;
127};
128
129class ResolveURICallbacks FINAL : public FileSystemCallbacksBase {
130public:
131    static PassOwnPtr<AsyncFileSystemCallbacks> create(EntryCallback*, ErrorCallback*, ExecutionContext*);
132    virtual void didResolveURL(const String& name, const KURL& rootURL, FileSystemType, const String& filePath, bool isDirectry) OVERRIDE;
133
134private:
135    ResolveURICallbacks(EntryCallback*, ErrorCallback*, ExecutionContext*);
136    Persistent<EntryCallback> m_successCallback;
137};
138
139class MetadataCallbacks FINAL : public FileSystemCallbacksBase {
140public:
141    static PassOwnPtr<AsyncFileSystemCallbacks> create(MetadataCallback*, ErrorCallback*, ExecutionContext*, DOMFileSystemBase*);
142    virtual void didReadMetadata(const FileMetadata&) OVERRIDE;
143
144private:
145    MetadataCallbacks(MetadataCallback*, ErrorCallback*, ExecutionContext*, DOMFileSystemBase*);
146    Persistent<MetadataCallback> m_successCallback;
147};
148
149class FileWriterBaseCallbacks FINAL : public FileSystemCallbacksBase {
150public:
151    static PassOwnPtr<AsyncFileSystemCallbacks> create(PassRefPtrWillBeRawPtr<FileWriterBase>, FileWriterBaseCallback*, ErrorCallback*, ExecutionContext*);
152    virtual void didCreateFileWriter(PassOwnPtr<WebFileWriter>, long long length) OVERRIDE;
153
154private:
155    FileWriterBaseCallbacks(PassRefPtrWillBeRawPtr<FileWriterBase>, FileWriterBaseCallback*, ErrorCallback*, ExecutionContext*);
156    Persistent<FileWriterBase> m_fileWriter;
157    Persistent<FileWriterBaseCallback> m_successCallback;
158};
159
160class SnapshotFileCallback FINAL : public FileSystemCallbacksBase {
161public:
162    static PassOwnPtr<AsyncFileSystemCallbacks> create(DOMFileSystemBase*, const String& name, const KURL&, FileCallback*, ErrorCallback*, ExecutionContext*);
163    virtual void didCreateSnapshotFile(const FileMetadata&, PassRefPtr<BlobDataHandle> snapshot);
164
165private:
166    SnapshotFileCallback(DOMFileSystemBase*, const String& name, const KURL&, FileCallback*, ErrorCallback*, ExecutionContext*);
167    String m_name;
168    KURL m_url;
169    Persistent<FileCallback> m_successCallback;
170};
171
172class VoidCallbacks FINAL : public FileSystemCallbacksBase {
173public:
174    static PassOwnPtr<AsyncFileSystemCallbacks> create(VoidCallback*, ErrorCallback*, ExecutionContext*, DOMFileSystemBase*);
175    virtual void didSucceed() OVERRIDE;
176
177private:
178    VoidCallbacks(VoidCallback*, ErrorCallback*, ExecutionContext*, DOMFileSystemBase*);
179    Persistent<VoidCallback> m_successCallback;
180};
181
182} // namespace blink
183
184#endif // FileSystemCallbacks_h
185