Source/modules/filesystem/DirectoryReader.h

/*
 * 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,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef DirectoryReader_h
#define DirectoryReader_h

#include "bindings/core/v8/ScriptWrappable.h"
#include "modules/filesystem/DOMFileSystem.h"
#include "modules/filesystem/DirectoryReaderBase.h"
#include "modules/filesystem/EntriesCallback.h"
#include "platform/heap/Handle.h"
#include "wtf/text/WTFString.h"

namespace blink {

class ErrorCallback;

class DirectoryReader : public DirectoryReaderBase, public ScriptWrappable {
public:
    static DirectoryReader* create(DOMFileSystemBase* fileSystem, const String& fullPath)
    {
        return new DirectoryReader(fileSystem, fullPath);
    }

    virtual ~DirectoryReader();

    void readEntries(PassOwnPtr<EntriesCallback>, PassOwnPtr<ErrorCallback> = nullptr);

    DOMFileSystem* filesystem() const { return static_cast<DOMFileSystem*>(m_fileSystem.get()); }

    virtual void trace(Visitor*) OVERRIDE;

private:
    class EntriesCallbackHelper;
    class ErrorCallbackHelper;

    DirectoryReader(DOMFileSystemBase*, const String& fullPath);

    void addEntries(const EntryHeapVector& entries);

    void onError(FileError*);

    bool m_isReading;
    EntryHeapVector m_entries;
    RefPtrWillBeMember<FileError> m_error;
    OwnPtr<EntriesCallback> m_entriesCallback;
    OwnPtr<ErrorCallback> m_errorCallback;
};

}

#endif // DirectoryReader_h