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 FileWriter_h 32#define FileWriter_h 33 34#include "core/dom/ActiveDOMObject.h" 35#include "core/dom/ExecutionContext.h" 36#include "core/fileapi/FileError.h" 37#include "modules/EventTargetModules.h" 38#include "modules/filesystem/FileWriterBase.h" 39#include "platform/heap/Handle.h" 40#include "public/platform/WebFileWriterClient.h" 41#include "wtf/RefPtr.h" 42 43namespace blink { 44 45class Blob; 46class ExceptionState; 47class ExecutionContext; 48 49class FileWriter FINAL : public FileWriterBase, public ActiveDOMObject, public EventTargetWithInlineData, public WebFileWriterClient { 50 DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<FileWriterBase>); 51 DEFINE_WRAPPERTYPEINFO(); 52 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(FileWriter); 53public: 54 static FileWriter* create(ExecutionContext*); 55 56 enum ReadyState { 57 INIT = 0, 58 WRITING = 1, 59 DONE = 2 60 }; 61 62 void write(Blob*, ExceptionState&); 63 void seek(long long position, ExceptionState&); 64 void truncate(long long length, ExceptionState&); 65 void abort(ExceptionState&); 66 ReadyState readyState() const { return m_readyState; } 67 FileError* error() const { return m_error.get(); } 68 69 // WebFileWriterClient 70 virtual void didWrite(long long bytes, bool complete) OVERRIDE; 71 virtual void didTruncate() OVERRIDE; 72 virtual void didFail(WebFileError) OVERRIDE; 73 74 // ActiveDOMObject 75 virtual void stop() OVERRIDE; 76 virtual bool hasPendingActivity() const OVERRIDE; 77 78 // EventTarget 79 virtual const AtomicString& interfaceName() const OVERRIDE; 80 virtual ExecutionContext* executionContext() const OVERRIDE { return ActiveDOMObject::executionContext(); } 81 82 DEFINE_ATTRIBUTE_EVENT_LISTENER(writestart); 83 DEFINE_ATTRIBUTE_EVENT_LISTENER(progress); 84 DEFINE_ATTRIBUTE_EVENT_LISTENER(write); 85 DEFINE_ATTRIBUTE_EVENT_LISTENER(abort); 86 DEFINE_ATTRIBUTE_EVENT_LISTENER(error); 87 DEFINE_ATTRIBUTE_EVENT_LISTENER(writeend); 88 89 virtual void trace(Visitor*) OVERRIDE; 90 91private: 92 enum Operation { 93 OperationNone, 94 OperationWrite, 95 OperationTruncate, 96 OperationAbort 97 }; 98 99 FileWriter(ExecutionContext*); 100 101 virtual ~FileWriter(); 102 103 void completeAbort(); 104 105 void doOperation(Operation); 106 107 void signalCompletion(FileError::ErrorCode); 108 109 void fireEvent(const AtomicString& type); 110 111 void setError(FileError::ErrorCode, ExceptionState&); 112 113 RefPtrWillBeMember<FileError> m_error; 114 ReadyState m_readyState; 115 Operation m_operationInProgress; 116 Operation m_queuedOperation; 117 long long m_bytesWritten; 118 long long m_bytesToWrite; 119 long long m_truncateLength; 120 long long m_numAborts; 121 long long m_recursionDepth; 122 double m_lastProgressNotificationTimeMS; 123 RefPtrWillBeMember<Blob> m_blobBeingWritten; 124 int m_asyncOperationId; 125}; 126 127} // namespace blink 128 129#endif // FileWriter_h 130