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