ComparatorByChat.java

/**
 * Copyright (c) 2013, Redsolution LTD. All rights reserved.
 *
 * This file is part of Xabber project; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License, Version 3.
 *
 * Xabber 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License,
 * along with this program. If not, see http://www.gnu.org/licenses/.
 */
package com.xabber.android.ui.adapter;

import com.xabber.android.data.message.AbstractChat;
import com.xabber.android.data.message.MessageManager;
import com.xabber.android.data.roster.AbstractContact;

public class ComparatorByChat extends ComparatorByName {

    public static final ComparatorByChat COMPARATOR_BY_CHAT = new ComparatorByChat();

    @Override
    public int compare(AbstractContact contact1, AbstractContact contact2) {
        final MessageManager messageManager = MessageManager.getInstance();
        final AbstractChat abstractChat1 = messageManager.getChat(contact1.getAccount(), contact1.getUser());
        final AbstractChat abstractChat2 = messageManager.getChat(contact2.getAccount(), contact2.getUser());

        final boolean hasActiveChat1 = abstractChat1 != null && abstractChat1.isActive();
        final boolean hasActiveChat2 = abstractChat2 != null && abstractChat2.isActive();

        if (hasActiveChat1 && !hasActiveChat2) {
            return -1;
        }

        if (!hasActiveChat1 && hasActiveChat2) {
            return 1;
        }

        if (hasActiveChat1) {
            int result;
            result = ChatComparator.CHAT_COMPARATOR.compare(abstractChat1, abstractChat2);
            if (result != 0) {
                return result;
            }
        }

        return super.compare(contact1, contact2);
    }

}