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 "bindings/v8/ScriptWrappable.h" 35 #include "core/dom/ActiveDOMObject.h" 36 #include "core/dom/ExecutionContext.h" 37 #include "core/fileapi/FileError.h" 38 #include "modules/EventTargetModules.h" 39 #include "modules/filesystem/FileWriterBase.h" 40 #include "platform/heap/Handle.h" 41 #include "public/platform/WebFileWriterClient.h" 42 #include "wtf/RefPtr.h" 43 44 namespace WebCore { 45 46 class Blob; 47 class ExceptionState; 48 class ExecutionContext; 49 50 class FileWriter FINAL : public FileWriterBase, public ScriptWrappable, public ActiveDOMObject, public EventTargetWithInlineData, public blink::WebFileWriterClient { 51 DEFINE_EVENT_TARGET_REFCOUNTING(RefCountedGarbageCollected<FileWriterBase>); 52 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(FileWriter); 53 public: 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&); readyState()66 ReadyState readyState() const { return m_readyState; } error()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(blink::WebFileError) OVERRIDE; 73 74 // ActiveDOMObject 75 virtual void stop() OVERRIDE; 76 77 // EventTarget 78 virtual const AtomicString& interfaceName() const OVERRIDE; executionContext()79 virtual ExecutionContext* executionContext() const OVERRIDE { return ActiveDOMObject::executionContext(); } 80 81 DEFINE_ATTRIBUTE_EVENT_LISTENER(writestart); 82 DEFINE_ATTRIBUTE_EVENT_LISTENER(progress); 83 DEFINE_ATTRIBUTE_EVENT_LISTENER(write); 84 DEFINE_ATTRIBUTE_EVENT_LISTENER(abort); 85 DEFINE_ATTRIBUTE_EVENT_LISTENER(error); 86 DEFINE_ATTRIBUTE_EVENT_LISTENER(writeend); 87 88 virtual void trace(Visitor*) OVERRIDE; 89 90 private: 91 enum Operation { 92 OperationNone, 93 OperationWrite, 94 OperationTruncate, 95 OperationAbort 96 }; 97 98 FileWriter(ExecutionContext*); 99 100 virtual ~FileWriter(); 101 102 void completeAbort(); 103 104 void doOperation(Operation); 105 106 void signalCompletion(FileError::ErrorCode); 107 108 void fireEvent(const AtomicString& type); 109 110 void setError(FileError::ErrorCode, ExceptionState&); 111 112 RefPtrWillBeMember<FileError> m_error; 113 ReadyState m_readyState; 114 Operation m_operationInProgress; 115 Operation m_queuedOperation; 116 long long m_bytesWritten; 117 long long m_bytesToWrite; 118 long long m_truncateLength; 119 long long m_numAborts; 120 long long m_recursionDepth; 121 double m_lastProgressNotificationTimeMS; 122 RefPtrWillBeMember<Blob> m_blobBeingWritten; 123 }; 124 125 } // namespace WebCore 126 127 #endif // FileWriter_h 128