/**
 * Copyright (C) 2004-2011 Jive Software. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package org.jivesoftware.spark.ui;

import org.jivesoftware.smack.packet.Presence;
import org.jxmpp.jid.BareJid;

import javax.swing.Icon;

/**
 * The ContactItemHandler allows users to customize the actions that take place within
 * a <code>ContactItem</code> within a users presence changes or the item is double clicked.
 */
public interface ContactItemHandler {

    /**
     * The user's presence has been changed.
     *
     * @param item     the contact item.
     * @param presence the user's new presence.
     * @return true if the presence was handled.
     */
    default boolean handlePresence(ContactItem item, Presence presence) {
        return false;
    }

    /**
     * Return the icon used for the particular presence.
     *
     * @param jid the users jid.
     * @return the icon, if any. null may be returned.
     */
    default Icon getIcon(BareJid jid) {
        return null;
    }

    /**
     * Return the icon to use on the chat room tab.
     *
     * @param presence the presence of the user.
     * @return the icon to use.
     */
    default Icon getTabIcon(Presence presence) {
        return null;
    }

    /**
     * The <code>ContactItem</code> has been double-clicked by the user.
     *
     * @param item the ContactItem to handle.
     * @return true if you wish to handle the double-click event.
     */
    default boolean handleDoubleClick(ContactItem item) {
        return false;
    }
}
