Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 200 insertions, 0 deletions

diff --git a/Source/WebCore/fileapi/FileWriter.cpp b/Source/WebCore/fileapi/FileWriter.cpp
new file mode 100644
index 0000000..45ba42b
--- /dev/null
+++ b/Source/WebCore/fileapi/FileWriter.cpp
@@ -0,0 +1,200 @@
+/*
+ * 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.
+ */
+
+#include "config.h"
+
+#if ENABLE(FILE_SYSTEM)
+
+#include "FileWriter.h"
+
+#include "AsyncFileWriter.h"
+#include "Blob.h"
+#include "ExceptionCode.h"
+#include "FileError.h"
+#include "FileException.h"
+#include "ProgressEvent.h"
+
+namespace WebCore {
+
+FileWriter::FileWriter(ScriptExecutionContext* context)
+    : ActiveDOMObject(context, this)
+    , m_readyState(INIT)
+    , m_startedWriting(false)
+    , m_bytesWritten(0)
+    , m_bytesToWrite(0)
+    , m_truncateLength(-1)
+{
+}
+
+FileWriter::~FileWriter()
+{
+    if (m_readyState == WRITING)
+        stop();
+}
+
+bool FileWriter::hasPendingActivity() const
+{
+    return m_readyState == WRITING || ActiveDOMObject::hasPendingActivity();
+}
+
+bool FileWriter::canSuspend() const
+{
+    // FIXME: It is not currently possible to suspend a FileWriter, so pages with FileWriter can not go into page cache.
+    return false;
+}
+
+void FileWriter::stop()
+{
+    if (writer() && m_readyState == WRITING)
+        writer()->abort();
+    m_blobBeingWritten.clear();
+    m_readyState = DONE;
+}
+
+void FileWriter::write(Blob* data, ExceptionCode& ec)
+{
+    ASSERT(writer());
+    if (m_readyState == WRITING) {
+        setError(FileError::INVALID_STATE_ERR, ec);
+        return;
+    }
+    if (!data) {
+        setError(FileError::TYPE_MISMATCH_ERR, ec);
+        return;
+    }
+
+    m_blobBeingWritten = data;
+    m_readyState = WRITING;
+    m_startedWriting = false;
+    m_bytesWritten = 0;
+    m_bytesToWrite = data->size();
+    writer()->write(position(), data);
+}
+
+void FileWriter::seek(long long position, ExceptionCode& ec)
+{
+    ASSERT(writer());
+    if (m_readyState == WRITING) {
+        setError(FileError::INVALID_STATE_ERR, ec);
+        return;
+    }
+
+    m_bytesWritten = 0;
+    m_bytesToWrite = 0;
+    seekInternal(position);
+}
+
+void FileWriter::truncate(long long position, ExceptionCode& ec)
+{
+    ASSERT(writer());
+    if (m_readyState == WRITING || position < 0) {
+        setError(FileError::INVALID_STATE_ERR, ec);
+        return;
+    }
+    m_readyState = WRITING;
+    m_bytesWritten = 0;
+    m_bytesToWrite = 0;
+    m_truncateLength = position;
+    writer()->truncate(position);
+}
+
+void FileWriter::abort(ExceptionCode& ec)
+{
+    ASSERT(writer());
+    if (m_readyState != WRITING) {
+        setError(FileError::INVALID_STATE_ERR, ec);
+        return;
+    }
+
+    m_error = FileError::create(FileError::ABORT_ERR);
+    writer()->abort();
+}
+
+void FileWriter::didWrite(long long bytes, bool complete)
+{
+    ASSERT(bytes + m_bytesWritten > 0);
+    ASSERT(bytes + m_bytesWritten <= m_bytesToWrite);
+    if (!m_startedWriting) {
+        fireEvent(eventNames().writestartEvent);
+        m_startedWriting = true;
+    }
+    m_bytesWritten += bytes;
+    ASSERT((m_bytesWritten == m_bytesToWrite) || !complete);
+    setPosition(position() + bytes);
+    if (position() > length())
+        setLength(position());
+    fireEvent(eventNames().progressEvent);
+    if (complete) {
+        m_blobBeingWritten.clear();
+        fireEvent(eventNames().writeEvent);
+        m_readyState = DONE;
+        fireEvent(eventNames().writeendEvent);
+    }
+}
+
+void FileWriter::didTruncate()
+{
+    ASSERT(m_truncateLength >= 0);
+    fireEvent(eventNames().writestartEvent);
+    setLength(m_truncateLength);
+    if (position() > length())
+        setPosition(length());
+    m_truncateLength = -1;
+    fireEvent(eventNames().writeEvent);
+    m_readyState = DONE;
+    fireEvent(eventNames().writeendEvent);
+}
+
+void FileWriter::didFail(FileError::ErrorCode code)
+{
+    m_error = FileError::create(code);
+    fireEvent(eventNames().errorEvent);
+    if (FileError::ABORT_ERR == code)
+        fireEvent(eventNames().abortEvent);
+    fireEvent(eventNames().errorEvent);
+    m_blobBeingWritten.clear();
+    m_readyState = DONE;
+    fireEvent(eventNames().writeendEvent);
+}
+
+void FileWriter::fireEvent(const AtomicString& type)
+{
+    dispatchEvent(ProgressEvent::create(type, true, m_bytesWritten, m_bytesToWrite));
+}
+
+void FileWriter::setError(FileError::ErrorCode errorCode, ExceptionCode& ec)
+{
+    ec = FileException::ErrorCodeToExceptionCode(errorCode);
+    m_error = FileError::create(errorCode);
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(FILE_SYSTEM)