Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 135 insertions, 0 deletions

diff --git a/Source/WebCore/fileapi/FileWriter.h b/Source/WebCore/fileapi/FileWriter.h
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+++ b/Source/WebCore/fileapi/FileWriter.h
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+/*
+ * Copyright (C) 2010 Google Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef FileWriter_h
+#define FileWriter_h
+
+#if ENABLE(FILE_SYSTEM)
+
+#include "ActiveDOMObject.h"
+#include "AsyncFileWriterClient.h"
+#include "EventTarget.h"
+#include "FileWriterBase.h"
+#include "ScriptExecutionContext.h"
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class Blob;
+class ScriptExecutionContext;
+
+class FileWriter : public FileWriterBase, public ActiveDOMObject, public EventTarget, public AsyncFileWriterClient {
+public:
+    static PassRefPtr<FileWriter> create(ScriptExecutionContext* context)
+    {
+        return adoptRef(new FileWriter(context));
+    }
+
+    enum ReadyState {
+        INIT = 0,
+        WRITING = 1,
+        DONE = 2
+    };
+
+    void write(Blob*, ExceptionCode&);
+    void seek(long long position, ExceptionCode&);
+    void truncate(long long length, ExceptionCode&);
+    void abort(ExceptionCode&);
+    ReadyState readyState() const { return m_readyState; }
+    FileError* error() const { return m_error.get(); }
+
+    // AsyncFileWriterClient
+    void didWrite(long long bytes, bool complete);
+    void didTruncate();
+    void didFail(FileError::ErrorCode);
+
+    // ActiveDOMObject
+    virtual bool canSuspend() const;
+    virtual bool hasPendingActivity() const;
+    virtual void stop();
+
+    // EventTarget
+    virtual const AtomicString& interfaceName() const;
+    virtual ScriptExecutionContext* scriptExecutionContext() const { return ActiveDOMObject::scriptExecutionContext(); }
+
+    using RefCounted<FileWriterBase>::ref;
+    using RefCounted<FileWriterBase>::deref;
+
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(writestart);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(progress);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(write);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(abort);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(writeend);
+
+private:
+    enum Operation {
+        OperationNone,
+        OperationWrite,
+        OperationTruncate
+    };
+
+    FileWriter(ScriptExecutionContext*);
+
+    virtual ~FileWriter();
+
+    // EventTarget
+    virtual void refEventTarget() { ref(); }
+    virtual void derefEventTarget() { deref(); }
+    virtual EventTargetData* eventTargetData() { return &m_eventTargetData; }
+    virtual EventTargetData* ensureEventTargetData() { return &m_eventTargetData; }
+
+    void doOperation(Operation);
+
+    void signalCompletion(FileError::ErrorCode);
+
+    void fireEvent(const AtomicString& type);
+
+    void setError(FileError::ErrorCode, ExceptionCode&);
+
+    RefPtr<FileError> m_error;
+    EventTargetData m_eventTargetData;
+    ReadyState m_readyState;
+    bool m_isOperationInProgress;
+    Operation m_queuedOperation;
+    long long m_bytesWritten;
+    long long m_bytesToWrite;
+    long long m_truncateLength;
+    long long m_numAborts;
+    long long m_recursionDepth;
+    RefPtr<Blob> m_blobBeingWritten;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(FILE_SYSTEM)
+
+#endif // FileWriter_h