/*

 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.

 * Copyright (C) 2008 Collabora, Ltd.  All rights reserved.

 * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. 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.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 PluginDatabase_H

#define PluginDatabase_H

#include "PlatformString.h"

#include "PluginPackage.h"

#include "StringHash.h"

#include <wtf/HashSet.h>

#include <wtf/Vector.h>

namespace WebCore {

    class Element;

    class Frame;

    class IntSize;

    class KURL;

    class PluginDatabaseClient;

    class PluginPackage;

    typedef HashSet<RefPtr<PluginPackage>, PluginPackageHash> PluginSet;

    class PluginDatabase {

    public:

        PluginDatabase();

        // The first call to installedPlugins creates the plugin database

        // and by default populates it with the plugins installed on the system.

        // For testing purposes, it is possible to not populate the database

        // automatically, as the plugins might affect the DRT results by

        // writing to a.o. stderr.

        static PluginDatabase* installedPlugins(bool populate = true);

        bool refresh();

        void clear();

        Vector<PluginPackage*> plugins() const;

        bool isMIMETypeRegistered(const String& mimeType);

        void addExtraPluginDirectory(const String&);

        static bool isPreferredPluginDirectory(const String& directory);

        static int preferredPluginCompare(const void*, const void*);

        PluginPackage* findPlugin(const KURL&, String& mimeType);

        PluginPackage* pluginForMIMEType(const String& mimeType);

        void setPreferredPluginForMIMEType(const String& mimeType, PluginPackage* plugin);

        void setPluginDirectories(const Vector<String>& directories)

        {

            clear();

            m_pluginDirectories = directories;

        }

        void setClient(PluginDatabaseClient* client)

        {

            m_client = client;

        }

        static Vector<String> defaultPluginDirectories();

        Vector<String> pluginDirectories() const { return m_pluginDirectories; }

    private:

        void getPluginPathsInDirectories(HashSet<String>&) const;

        void getDeletedPlugins(PluginSet&) const;

        // Returns whether the plugin was actually added or not (it won't be added if it's a duplicate of an existing plugin).

        bool add(PassRefPtr<PluginPackage>);

        void remove(PluginPackage*);

        String MIMETypeForExtension(const String& extension) const;

        Vector<String> m_pluginDirectories;

        HashSet<String> m_registeredMIMETypes;

        PluginSet m_plugins;

        HashMap<String, RefPtr<PluginPackage> > m_pluginsByPath;

        HashMap<String, time_t> m_pluginPathsWithTimes;

        HashMap<String, RefPtr<PluginPackage> > m_preferredPlugins;

        PluginDatabaseClient* m_client;

    };

} // namespace WebCore

#endif