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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 DOMFileSystem_h
#define DOMFileSystem_h
#include "bindings/v8/ScriptWrappable.h"
#include "core/dom/ActiveDOMObject.h"
#include "core/dom/ExecutionContext.h"
#include "core/dom/ExecutionContextTask.h"
#include "modules/filesystem/DOMFileSystemBase.h"
#include "modules/filesystem/EntriesCallback.h"
namespace WebCore {
class DirectoryEntry;
class File;
class FileCallback;
class FileEntry;
class FileWriterCallback;
class DOMFileSystem : public DOMFileSystemBase, public ScriptWrappable, public ActiveDOMObject {
public:
static PassRefPtr<DOMFileSystem> create(ExecutionContext*, const String& name, FileSystemType, const KURL& rootURL);
// Creates a new isolated file system for the given filesystemId.
static PassRefPtr<DOMFileSystem> createIsolatedFileSystem(ExecutionContext*, const String& filesystemId);
PassRefPtr<DirectoryEntry> root();
// DOMFileSystemBase overrides.
virtual void addPendingCallbacks() OVERRIDE;
virtual void removePendingCallbacks() OVERRIDE;
virtual void reportError(PassOwnPtr<ErrorCallback>, PassRefPtr<FileError>) OVERRIDE;
void createWriter(const FileEntry*, PassOwnPtr<FileWriterCallback>, PassOwnPtr<ErrorCallback>);
void createFile(const FileEntry*, PassOwnPtr<FileCallback>, PassOwnPtr<ErrorCallback>);
// Schedule a callback. This should not cross threads (should be called on the same context thread).
// FIXME: move this to a more generic place.
template <typename CB, typename CBArg>
static void scheduleCallback(ExecutionContext*, PassOwnPtr<CB>, PassRefPtr<CBArg>);
template <typename CB, typename CBArg>
static void scheduleCallback(ExecutionContext*, PassOwnPtr<CB>, const CBArg&);
template <typename CB, typename CBArg>
void scheduleCallback(PassOwnPtr<CB> callback, PassRefPtr<CBArg> callbackArg)
{
scheduleCallback(executionContext(), callback, callbackArg);
}
template <typename CB, typename CBArg>
void scheduleCallback(PassOwnPtr<CB> callback, const CBArg& callbackArg)
{
scheduleCallback(executionContext(), callback, callbackArg);
}
private:
DOMFileSystem(ExecutionContext*, const String& name, FileSystemType, const KURL& rootURL);
// A helper template to schedule a callback task.
template <typename CB, typename CBArg>
class DispatchCallbacRefPtrArgTask : public ExecutionContextTask {
public:
DispatchCallbacRefPtrArgTask(PassOwnPtr<CB> callback, PassRefPtr<CBArg> arg)
: m_callback(callback)
, m_callbackArg(arg)
{
}
virtual void performTask(ExecutionContext*)
{
m_callback->handleEvent(m_callbackArg.get());
}
private:
OwnPtr<CB> m_callback;
RefPtr<CBArg> m_callbackArg;
};
template <typename CB, typename CBArg>
class DispatchCallbackNonPtrArgTask : public ExecutionContextTask {
public:
DispatchCallbackNonPtrArgTask(PassOwnPtr<CB> callback, const CBArg& arg)
: m_callback(callback)
, m_callbackArg(arg)
{
}
virtual void performTask(ExecutionContext*)
{
m_callback->handleEvent(m_callbackArg);
}
private:
OwnPtr<CB> m_callback;
CBArg m_callbackArg;
};
};
template <typename CB, typename CBArg>
void DOMFileSystem::scheduleCallback(ExecutionContext* executionContext, PassOwnPtr<CB> callback, PassRefPtr<CBArg> arg)
{
ASSERT(executionContext->isContextThread());
if (callback)
executionContext->postTask(adoptPtr(new DispatchCallbacRefPtrArgTask<CB, CBArg>(callback, arg)));
}
template <typename CB, typename CBArg>
void DOMFileSystem::scheduleCallback(ExecutionContext* executionContext, PassOwnPtr<CB> callback, const CBArg& arg)
{
ASSERT(executionContext->isContextThread());
if (callback)
executionContext->postTask(adoptPtr(new DispatchCallbackNonPtrArgTask<CB, CBArg>(callback, arg)));
}
} // namespace
#endif // DOMFileSystem_h
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