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 #if ENABLE(FILE_SYSTEM) 35 36 #include "AsyncFileSystemCallbacks.h" 37 #include "PlatformString.h" 38 #include <wtf/PassRefPtr.h> 39 #include <wtf/Vector.h> 40 41 namespace WebCore { 42 43 class AsyncFileWriter; 44 class DOMFileSystemBase; 45 class DirectoryReaderBase; 46 class EntriesCallback; 47 class EntryArray; 48 class EntryCallback; 49 class ErrorCallback; 50 struct FileMetadata; 51 class FileSystemCallback; 52 class FileWriterBase; 53 class FileWriterBaseCallback; 54 class MetadataCallback; 55 class ScriptExecutionContext; 56 class VoidCallback; 57 58 class FileSystemCallbacksBase : public AsyncFileSystemCallbacks { 59 public: 60 virtual ~FileSystemCallbacksBase(); 61 62 // For EntryCallbacks and VoidCallbacks. 63 virtual void didSucceed(); 64 65 // For FileSystemCallbacks. 66 virtual void didOpenFileSystem(const String& name, PassOwnPtr<AsyncFileSystem>); 67 68 // For MetadataCallbacks. 69 virtual void didReadMetadata(const FileMetadata&); 70 71 // For EntriesCallbacks. didReadDirectoryEntry is called each time the API reads an entry, and didReadDirectoryDone is called when a chunk of entries have been read (i.e. good time to call back to the application). If hasMore is true there can be more chunks. 72 virtual void didReadDirectoryEntry(const String& name, bool isDirectory); 73 virtual void didReadDirectoryEntries(bool hasMore); 74 75 // For createFileWriter. 76 virtual void didCreateFileWriter(PassOwnPtr<AsyncFileWriter>, long long length); 77 78 // For ErrorCallback. 79 virtual void didFail(int code); 80 81 protected: 82 FileSystemCallbacksBase(PassRefPtr<ErrorCallback> errorCallback); 83 RefPtr<ErrorCallback> m_errorCallback; 84 }; 85 86 // Subclasses ---------------------------------------------------------------- 87 88 class EntryCallbacks : public FileSystemCallbacksBase { 89 public: 90 static PassOwnPtr<EntryCallbacks> create(PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>, PassRefPtr<DOMFileSystemBase>, const String& expectedPath, bool isDirectory); 91 virtual void didSucceed(); 92 93 private: 94 EntryCallbacks(PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>, PassRefPtr<DOMFileSystemBase>, const String& expectedPath, bool isDirectory); 95 RefPtr<EntryCallback> m_successCallback; 96 RefPtr<DOMFileSystemBase> m_fileSystem; 97 String m_expectedPath; 98 bool m_isDirectory; 99 }; 100 101 class EntriesCallbacks : public FileSystemCallbacksBase { 102 public: 103 static PassOwnPtr<EntriesCallbacks> create(PassRefPtr<EntriesCallback>, PassRefPtr<ErrorCallback>, PassRefPtr<DirectoryReaderBase>, const String& basePath); 104 virtual void didReadDirectoryEntry(const String& name, bool isDirectory); 105 virtual void didReadDirectoryEntries(bool hasMore); 106 107 private: 108 EntriesCallbacks(PassRefPtr<EntriesCallback>, PassRefPtr<ErrorCallback>, PassRefPtr<DirectoryReaderBase>, const String& basePath); 109 RefPtr<EntriesCallback> m_successCallback; 110 RefPtr<DirectoryReaderBase> m_directoryReader; 111 String m_basePath; 112 RefPtr<EntryArray> m_entries; 113 }; 114 115 class FileSystemCallbacks : public FileSystemCallbacksBase { 116 public: 117 static PassOwnPtr<FileSystemCallbacks> create(PassRefPtr<FileSystemCallback>, PassRefPtr<ErrorCallback>, ScriptExecutionContext*); 118 virtual void didOpenFileSystem(const String& name, PassOwnPtr<AsyncFileSystem>); 119 120 private: 121 FileSystemCallbacks(PassRefPtr<FileSystemCallback>, PassRefPtr<ErrorCallback>, ScriptExecutionContext*); 122 RefPtr<FileSystemCallback> m_successCallback; 123 RefPtr<ScriptExecutionContext> m_scriptExecutionContext; 124 }; 125 126 class ResolveURICallbacks : public FileSystemCallbacksBase { 127 public: 128 static PassOwnPtr<ResolveURICallbacks> create(PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>, ScriptExecutionContext*, const String& filePath); 129 virtual void didOpenFileSystem(const String& name, PassOwnPtr<AsyncFileSystem>); 130 131 private: 132 ResolveURICallbacks(PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>, ScriptExecutionContext*, const String& filePath); 133 RefPtr<EntryCallback> m_successCallback; 134 RefPtr<ScriptExecutionContext> m_scriptExecutionContext; 135 String m_filePath; 136 }; 137 138 class MetadataCallbacks : public FileSystemCallbacksBase { 139 public: 140 static PassOwnPtr<MetadataCallbacks> create(PassRefPtr<MetadataCallback>, PassRefPtr<ErrorCallback>); 141 virtual void didReadMetadata(const FileMetadata&); 142 143 private: 144 MetadataCallbacks(PassRefPtr<MetadataCallback>, PassRefPtr<ErrorCallback>); 145 RefPtr<MetadataCallback> m_successCallback; 146 }; 147 148 class FileWriterBaseCallbacks : public FileSystemCallbacksBase { 149 public: 150 static PassOwnPtr<FileWriterBaseCallbacks> create(PassRefPtr<FileWriterBase>, PassRefPtr<FileWriterBaseCallback>, PassRefPtr<ErrorCallback>); 151 virtual void didCreateFileWriter(PassOwnPtr<AsyncFileWriter>, long long length); 152 153 private: 154 FileWriterBaseCallbacks(PassRefPtr<FileWriterBase>, PassRefPtr<FileWriterBaseCallback>, PassRefPtr<ErrorCallback>); 155 RefPtr<FileWriterBase> m_fileWriter; 156 RefPtr<FileWriterBaseCallback> m_successCallback; 157 }; 158 159 class VoidCallbacks : public FileSystemCallbacksBase { 160 public: 161 static PassOwnPtr<VoidCallbacks> create(PassRefPtr<VoidCallback>, PassRefPtr<ErrorCallback>); 162 virtual void didSucceed(); 163 164 private: 165 VoidCallbacks(PassRefPtr<VoidCallback>, PassRefPtr<ErrorCallback>); 166 RefPtr<VoidCallback> m_successCallback; 167 }; 168 169 } // namespace 170 171 #endif // ENABLE(FILE_SYSTEM) 172 173 #endif // FileSystemCallbacks_h 174