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/**
 * @file llchannelmanager.h
 * @brief This class rules screen notification channels.
 *
 * $LicenseInfo:firstyear=2003&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLCHANNELMANAGER_H
#define LL_LLCHANNELMANAGER_H


#include "llscreenchannel.h"

#include "lluuid.h"

#include <map>

namespace LLNotificationsUI
{
/**
 * Manager for screen channels.
 * Responsible for instantiating and retrieving screen channels.
 */
class LLChannelManager : public LLSingleton<LLChannelManager>
{
    LLSINGLETON(LLChannelManager);
    virtual ~LLChannelManager();

    void cleanupSingleton() override;
public:


    struct ChannelElem
    {
        LLUUID                          id;
        LLHandle<LLScreenChannelBase>   channel;

        ChannelElem() { }

        ChannelElem(const ChannelElem &elem)
        {
            id = elem.id;
            channel = elem.channel;
        }

        bool operator == (const LLUUID &id_op) const
        {
            return (id == id_op);
        }
    };

    // On LoginCompleted - show StartUp toast
    void onLoginCompleted();
    // removes a channel intended for the startup toast and allows other channels to show their toasts
    void onStartUpToastClose();

    // creates a new ScreenChannel according to the given parameters or returns existing if present
    LLScreenChannelBase*    getChannel(LLScreenChannelBase::Params& p);

    LLScreenChannelBase*    addChannel(LLScreenChannelBase* channel);

    // returns a channel by its ID
    LLScreenChannelBase*    findChannelByID(const LLUUID& id);

    // creator of the Notification channel, that is used in more than one handler
    LLScreenChannel*        createNotificationChannel();

    // remove channel methods
    void    removeChannelByID(const LLUUID& id);

    /**
     * Manages toasts showing for all channels.
     *
     * @param mute Flag to disable/enable toasts showing.
     */
    void muteAllChannels(bool mute);

    /**
     * Kills matched toasts from specified  toast screen channel.
     */
    void killToastsFromChannel(const LLUUID& channel_id, const LLScreenChannel::Matcher& matcher);

    /**
     * Returns notification screen channel.
     */
    static LLNotificationsUI::LLScreenChannel* getNotificationScreenChannel();

    std::vector<ChannelElem>& getChannelList() { return mChannelList;}
private:

    LLScreenChannel* createChannel(LLScreenChannelBase::Params& p);

    LLScreenChannel*            mStartUpChannel;
    std::vector<ChannelElem>    mChannelList;
};

}
#endif