DOMFileSystemBase.h   [plain text]

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 * 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
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#ifndef DOMFileSystemBase_h
#define DOMFileSystemBase_h

#if ENABLE(FILE_SYSTEM)

#include "AsyncFileSystem.h"
#include "PlatformString.h"
#include "WebKitFlags.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>

namespace WebCore {

class DirectoryEntry;
class DirectoryReaderBase;
class EntriesCallback;
class EntryBase;
class EntryCallback;
class ErrorCallback;
class KURL;
class MetadataCallback;
class ScriptExecutionContext;
class SecurityOrigin;
class VoidCallback;

// A common base class for DOMFileSystem and DOMFileSystemSync.
class DOMFileSystemBase : public RefCounted<DOMFileSystemBase> {
public:
    static PassRefPtr<DOMFileSystemBase> create(ScriptExecutionContext* context, const String& name, PassOwnPtr<AsyncFileSystem> asyncFileSystem)
    {
        return adoptRef(new DOMFileSystemBase(context, name, asyncFileSystem));
    }
    virtual ~DOMFileSystemBase();

    const String& name() const { return m_name; }
    AsyncFileSystem* asyncFileSystem() const { return m_asyncFileSystem.get(); }
    SecurityOrigin* securityOrigin() const;

    // Actual FileSystem API implementations. All the validity checks on virtual paths are done at this level.
    // They return false for immediate errors that don't involve lower AsyncFileSystem layer (e.g. for name validation errors). Otherwise they return true (but later may call back with an runtime error).
    bool getMetadata(const EntryBase*, PassRefPtr<MetadataCallback>, PassRefPtr<ErrorCallback>);
    bool move(const EntryBase* source, EntryBase* parent, const String& name, PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>);
    bool copy(const EntryBase* source, EntryBase* parent, const String& name, PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>);
    bool remove(const EntryBase*, PassRefPtr<VoidCallback>, PassRefPtr<ErrorCallback>);
    bool removeRecursively(const EntryBase*, PassRefPtr<VoidCallback>, PassRefPtr<ErrorCallback>);
    bool getParent(const EntryBase*, PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>);
    bool getFile(const EntryBase*, const String& path, PassRefPtr<WebKitFlags>, PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>);
    bool getDirectory(const EntryBase*, const String& path, PassRefPtr<WebKitFlags>, PassRefPtr<EntryCallback>, PassRefPtr<ErrorCallback>);
    bool readDirectory(PassRefPtr<DirectoryReaderBase>, const String& path, PassRefPtr<EntriesCallback>, PassRefPtr<ErrorCallback>);

protected:
    DOMFileSystemBase(ScriptExecutionContext*, const String& name, PassOwnPtr<AsyncFileSystem>);
    friend class DOMFileSystemSync;

    ScriptExecutionContext* m_context;
    String m_name;
    mutable OwnPtr<AsyncFileSystem> m_asyncFileSystem;
};

} // namespace WebCore

#endif // ENABLE(FILE_SYSTEM)

#endif // DOMFileSystemBase_h