/*
 * 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 LocalFileSystem_h
#define LocalFileSystem_h

#include "core/workers/WorkerClients.h"
#include "platform/FileSystemType.h"
#include "wtf/Forward.h"
#include "wtf/Functional.h"

namespace blink {

class AsyncFileSystemCallbacks;
class CallbackWrapper;
class FileSystemClient;
class ExecutionContext;
class KURL;
class LocalFrame;
class WebFileSystem;

class LocalFileSystem FINAL : public NoBaseWillBeGarbageCollectedFinalized<LocalFileSystem>, public WillBeHeapSupplement<LocalFrame>, public WillBeHeapSupplement<WorkerClients> {
    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(LocalFileSystem);
    WTF_MAKE_NONCOPYABLE(LocalFileSystem);
public:
    static PassOwnPtrWillBeRawPtr<LocalFileSystem> create(PassOwnPtr<FileSystemClient>);
    virtual ~LocalFileSystem();

    void resolveURL(ExecutionContext*, const KURL&, PassOwnPtr<AsyncFileSystemCallbacks>);
    void requestFileSystem(ExecutionContext*, FileSystemType, long long size, PassOwnPtr<AsyncFileSystemCallbacks>);
    void deleteFileSystem(ExecutionContext*, FileSystemType, PassOwnPtr<AsyncFileSystemCallbacks>);

    FileSystemClient* client() { return m_client.get(); }

    static const char* supplementName();
    static LocalFileSystem* from(ExecutionContext&);

    virtual void trace(Visitor* visitor) OVERRIDE
    {
        WillBeHeapSupplement<LocalFrame>::trace(visitor);
        WillBeHeapSupplement<WorkerClients>::trace(visitor);
    }

protected:
    explicit LocalFileSystem(PassOwnPtr<FileSystemClient>);

private:
    WebFileSystem* fileSystem() const;
    void requestFileSystemAccessInternal(ExecutionContext*, const Closure& allowed, const Closure& denied);
    void fileSystemNotAvailable(PassRefPtrWillBeRawPtr<ExecutionContext>, PassRefPtr<CallbackWrapper>);
    void fileSystemNotAllowedInternal(PassRefPtrWillBeRawPtr<ExecutionContext>, PassRefPtr<CallbackWrapper>);
    void fileSystemAllowedInternal(PassRefPtrWillBeRawPtr<ExecutionContext>, FileSystemType, PassRefPtr<CallbackWrapper>);
    void resolveURLInternal(PassRefPtrWillBeRawPtr<ExecutionContext>, const KURL&, PassRefPtr<CallbackWrapper>);
    void deleteFileSystemInternal(PassRefPtrWillBeRawPtr<ExecutionContext>, FileSystemType, PassRefPtr<CallbackWrapper>);
    OwnPtr<FileSystemClient> m_client;
};

} // namespace blink

#endif // LocalFileSystem_h
