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