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1 /*
2  * Copyright (C) 2013 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 "public/platform/WebFileSystemCallbacks.h"
33 
34 #include "platform/AsyncFileSystemCallbacks.h"
35 #include "platform/FileMetadata.h"
36 #include "public/platform/WebFileInfo.h"
37 #include "public/platform/WebFileSystem.h"
38 #include "public/platform/WebFileSystemEntry.h"
39 #include "public/platform/WebFileWriter.h"
40 #include "public/platform/WebString.h"
41 #include "wtf/PassOwnPtr.h"
42 #include "wtf/PassRefPtr.h"
43 #include "wtf/RefCounted.h"
44 
45 namespace blink {
46 
47 class WebFileSystemCallbacksPrivate : public RefCounted<WebFileSystemCallbacksPrivate> {
48 public:
create(const PassOwnPtr<AsyncFileSystemCallbacks> & callbacks)49     static PassRefPtr<WebFileSystemCallbacksPrivate> create(const PassOwnPtr<AsyncFileSystemCallbacks>& callbacks)
50     {
51         return adoptRef(new WebFileSystemCallbacksPrivate(callbacks));
52     }
53 
callbacks()54     AsyncFileSystemCallbacks* callbacks() { return m_callbacks.get(); }
55 
56 private:
WebFileSystemCallbacksPrivate(const PassOwnPtr<AsyncFileSystemCallbacks> & callbacks)57     WebFileSystemCallbacksPrivate(const PassOwnPtr<AsyncFileSystemCallbacks>& callbacks) : m_callbacks(callbacks) { }
58     OwnPtr<AsyncFileSystemCallbacks> m_callbacks;
59 };
60 
WebFileSystemCallbacks(const PassOwnPtr<AsyncFileSystemCallbacks> & callbacks)61 WebFileSystemCallbacks::WebFileSystemCallbacks(const PassOwnPtr<AsyncFileSystemCallbacks>& callbacks)
62 {
63     m_private = WebFileSystemCallbacksPrivate::create(callbacks);
64 }
65 
reset()66 void WebFileSystemCallbacks::reset()
67 {
68     m_private.reset();
69 }
70 
assign(const WebFileSystemCallbacks & other)71 void WebFileSystemCallbacks::assign(const WebFileSystemCallbacks& other)
72 {
73     m_private = other.m_private;
74 }
75 
didSucceed()76 void WebFileSystemCallbacks::didSucceed()
77 {
78     ASSERT(!m_private.isNull());
79     m_private->callbacks()->didSucceed();
80     m_private.reset();
81 }
82 
didReadMetadata(const WebFileInfo & webFileInfo)83 void WebFileSystemCallbacks::didReadMetadata(const WebFileInfo& webFileInfo)
84 {
85     ASSERT(!m_private.isNull());
86     FileMetadata fileMetadata;
87     fileMetadata.modificationTime = webFileInfo.modificationTime;
88     fileMetadata.length = webFileInfo.length;
89     fileMetadata.type = static_cast<FileMetadata::Type>(webFileInfo.type);
90     fileMetadata.platformPath = webFileInfo.platformPath;
91     m_private->callbacks()->didReadMetadata(fileMetadata);
92     m_private.reset();
93 }
94 
didCreateSnapshotFile(const WebFileInfo & webFileInfo)95 void WebFileSystemCallbacks::didCreateSnapshotFile(const WebFileInfo& webFileInfo)
96 {
97     ASSERT(!m_private.isNull());
98     // It's important to create a BlobDataHandle that refers to the platform file path prior
99     // to return from this method so the underlying file will not be deleted.
100     OwnPtr<BlobData> blobData = BlobData::create();
101     blobData->appendFile(webFileInfo.platformPath);
102     RefPtr<BlobDataHandle> snapshotBlob = BlobDataHandle::create(blobData.release(), webFileInfo.length);
103 
104     FileMetadata fileMetadata;
105     fileMetadata.modificationTime = webFileInfo.modificationTime;
106     fileMetadata.length = webFileInfo.length;
107     fileMetadata.type = static_cast<FileMetadata::Type>(webFileInfo.type);
108     fileMetadata.platformPath = webFileInfo.platformPath;
109     m_private->callbacks()->didCreateSnapshotFile(fileMetadata, snapshotBlob);
110     m_private.reset();
111 }
112 
didReadDirectory(const WebVector<WebFileSystemEntry> & entries,bool hasMore)113 void WebFileSystemCallbacks::didReadDirectory(const WebVector<WebFileSystemEntry>& entries, bool hasMore)
114 {
115     ASSERT(!m_private.isNull());
116     for (size_t i = 0; i < entries.size(); ++i)
117         m_private->callbacks()->didReadDirectoryEntry(entries[i].name, entries[i].isDirectory);
118     m_private->callbacks()->didReadDirectoryEntries(hasMore);
119     m_private.reset();
120 }
121 
didOpenFileSystem(const WebString & name,const WebURL & rootURL)122 void WebFileSystemCallbacks::didOpenFileSystem(const WebString& name, const WebURL& rootURL)
123 {
124     ASSERT(!m_private.isNull());
125     m_private->callbacks()->didOpenFileSystem(name, rootURL);
126     m_private.reset();
127 }
128 
didResolveURL(const WebString & name,const WebURL & rootURL,WebFileSystemType type,const WebString & filePath,bool isDirectory)129 void WebFileSystemCallbacks::didResolveURL(const WebString& name, const WebURL& rootURL, WebFileSystemType type, const WebString& filePath, bool isDirectory)
130 {
131     ASSERT(!m_private.isNull());
132     m_private->callbacks()->didResolveURL(name, rootURL, static_cast<FileSystemType>(type), filePath, isDirectory);
133     m_private.reset();
134 }
135 
didCreateFileWriter(WebFileWriter * webFileWriter,long long length)136 void WebFileSystemCallbacks::didCreateFileWriter(WebFileWriter* webFileWriter, long long length)
137 {
138     ASSERT(!m_private.isNull());
139     m_private->callbacks()->didCreateFileWriter(adoptPtr(webFileWriter), length);
140     m_private.reset();
141 }
142 
didFail(WebFileError error)143 void WebFileSystemCallbacks::didFail(WebFileError error)
144 {
145     ASSERT(!m_private.isNull());
146     m_private->callbacks()->didFail(error);
147     m_private.reset();
148 }
149 
shouldBlockUntilCompletion() const150 bool WebFileSystemCallbacks::shouldBlockUntilCompletion() const
151 {
152     ASSERT(!m_private.isNull());
153     return m_private->callbacks()->shouldBlockUntilCompletion();
154 }
155 
156 } // namespace blink
157