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 FileWriterBase_h 32 #define FileWriterBase_h 33 34 #if ENABLE(FILE_SYSTEM) 35 36 #include "AsyncFileWriterClient.h" 37 #include <wtf/OwnPtr.h> 38 #include <wtf/PassOwnPtr.h> 39 #include <wtf/RefCounted.h> 40 41 namespace WebCore { 42 43 class AsyncFileWriter; 44 class Blob; 45 46 typedef int ExceptionCode; 47 48 class FileWriterBase : public RefCounted<FileWriterBase> { 49 public: 50 virtual ~FileWriterBase(); 51 void initialize(PassOwnPtr<AsyncFileWriter>, long long length); 52 position()53 long long position() const 54 { 55 return m_position; 56 } length()57 long long length() const 58 { 59 return m_length; 60 } 61 62 protected: 63 FileWriterBase(); 64 writer()65 AsyncFileWriter* writer() 66 { 67 return m_writer.get(); 68 } 69 setPosition(long long position)70 void setPosition(long long position) 71 { 72 m_position = position; 73 } 74 setLength(long long length)75 void setLength(long long length) 76 { 77 m_length = length; 78 } 79 80 void seekInternal(long long position); 81 82 private: 83 friend class WTF::RefCounted<FileWriterBase>; 84 85 OwnPtr<AsyncFileWriter> m_writer; 86 long long m_position; 87 long long m_length; 88 }; 89 90 } // namespace WebCore 91 92 #endif // ENABLE(FILE_SYSTEM) 93 94 #endif // FileWriterBase_h 95