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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/file_system/webfilewriter_impl.h"
#include "chrome/common/child_thread.h"
#include "chrome/common/file_system/file_system_dispatcher.h"
namespace {
inline FileSystemDispatcher* GetFileSystemDispatcher() {
return ChildThread::current()->file_system_dispatcher();
}
}
class WebFileWriterImpl::CallbackDispatcher
: public fileapi::FileSystemCallbackDispatcher {
public:
explicit CallbackDispatcher(
const base::WeakPtr<WebFileWriterImpl>& writer) : writer_(writer) {
}
virtual ~CallbackDispatcher() {
}
virtual void DidReadMetadata(const base::PlatformFileInfo&) {
NOTREACHED();
}
virtual void DidReadDirectory(
const std::vector<base::FileUtilProxy::Entry>& entries,
bool has_more) {
NOTREACHED();
}
virtual void DidOpenFileSystem(const std::string& name,
const FilePath& root_path) {
NOTREACHED();
}
virtual void DidSucceed() {
if (writer_)
writer_->DidSucceed();
}
virtual void DidFail(base::PlatformFileError error_code) {
if (writer_)
writer_->DidFail(error_code);
}
virtual void DidWrite(int64 bytes, bool complete) {
if (writer_)
writer_->DidWrite(bytes, complete);
}
private:
base::WeakPtr<WebFileWriterImpl> writer_;
};
WebFileWriterImpl::WebFileWriterImpl(
const WebKit::WebString& path, WebKit::WebFileWriterClient* client)
: WebFileWriterBase(path, client),
request_id_(0) {
}
WebFileWriterImpl::~WebFileWriterImpl() {
}
void WebFileWriterImpl::DoTruncate(const FilePath& path, int64 offset) {
// The FileSystemDispatcher takes ownership of the CallbackDispatcher.
GetFileSystemDispatcher()->Truncate(path, offset, &request_id_,
new CallbackDispatcher(AsWeakPtr()));
}
void WebFileWriterImpl::DoWrite(
const FilePath& path, const GURL& blob_url, int64 offset) {
GetFileSystemDispatcher()->Write(path, blob_url, offset, &request_id_,
new CallbackDispatcher(AsWeakPtr()));
}
void WebFileWriterImpl::DoCancel() {
GetFileSystemDispatcher()->Cancel(request_id_,
new CallbackDispatcher(AsWeakPtr()));
}
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