xp_widgets.php

<?php
/**
 * \file
 * \author Mattia Basaglia
 * \copyright Copyright 2015-2016 Mattia Basaglia
 * \section License
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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/>.
 */


class Xonpress_ServerTable extends WP_Widget 
{
    /**
     * Sets up the widgets name etc
     */
    public function __construct()
    {
        parent::__construct (
            'Xonpress_ServerTable', // id
            'Xonotic Server Table',  //name
            array ( // wp_register_sidebar_widget options
                'description' => 'Shows the number of players in the provided servers',
            )
        );
    }

    /**
     * Outputs the content of the widget
     *
     * @param array $args
     * @param array $instance
     */
    public function widget( $args, $instance )
    {
        echo $args['before_widget'];

        if ( ! empty( $instance['title'] ) )
            echo $args['before_title'] . apply_filters( 'widget_title', $instance['title'] ). $args['after_title'];

        $servers = explode( ' ', $instance['servers'] );

        $table = new HTML_Table();

        foreach ( $servers as $server )
        {
            $address = Engine_Address::parse($server);
            $status = Controller()->status($address);
            $table->simple_row(
                $address->protocol->string->to_plaintext($status["server.name"]),
                Controller()->player_number($status)
            );
        }

        echo $table;
        echo $args['after_widget'];
    }

    /**
     * Outputs the options form on admin
     *
     * @param array $instance The widget options
     */
    public function form( $instance )
    {
        $title = empty( $instance['title'] ) ? '' : $instance['title'];
        $servers = empty( $instance['servers'] ) ? '127.0.0.1:26000' : $instance['servers'];
        ?>
        <p>
        <label for="<?php echo $this->get_field_id( 'title' ); ?>">Title:</label>
        <input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" />
        </p>
        <p>
        <label for="<?php echo $this->get_field_id( 'servers' ); ?>">Servers:</label>
        <input class="widefat" id="<?php echo $this->get_field_id( 'servers' ); ?>" name="<?php echo $this->get_field_name( 'servers' ); ?>" type="text" value="<?php echo esc_attr( $servers ); ?>" />
        </p>
        <?php
    }

    /**
     * Processing widget options on save
     *
     * @param array $new_instance The new options
     * @param array $old_instance The previous options
     */
    public function update( $new_instance, $old_instance )
    {
        $instance = array();

        $instance['title'] = isset($new_instance['title']) ?  $new_instance['title'] : '';

        $servers = array();

        $new_servers = preg_split('/[\s,]+/', $new_instance['servers'], null, PREG_SPLIT_NO_EMPTY );
        foreach ( $new_servers as $server )
            if ( preg_match(self::$server_regex, $server) )
                $servers []= $server;

        $instance['servers'] = implode(' ',$servers);

        return $instance;
    }
}


function xonpress_widgets_init()
{
    register_widget( 'Xonpress_ServerTable' );
}