bbPress Widget, Show Author / Author Link

/**
 * bbPress Topic Widget
 *
 * Adds a widget which displays the topic list
 *
 * @since bbPress (r2653)
 *
 * @uses WP_Widget
 */
class BAM_Topics_Widget extends WP_Widget {

    /**
     * Register the widget
     *
     * @since bbPress (r3389)
     *
     * @uses register_widget()
     */
    function register_widget() {
        register_widget( 'BAM_Topics_Widget' );
    }

    /**
     * bbPress Topic Widget
     *
     * Registers the topic widget
     *
     * @since bbPress (r2653)
     *
     * @uses apply_filters() Calls 'BAM_Topics_Widget_options' with the
     *                        widget options
     */
    function BAM_Topics_Widget() {
        $widget_ops = apply_filters( 'BAM_Topics_Widget_options', array(
            'classname'   => 'widget_display_topics',
            'description' => __( 'A list of recent topics, sorted by popularity or freshness.', 'bbpress' )
        ) );

        parent::WP_Widget( false, __( 'BAM bbPress Topics List', 'bbpress' ), $widget_ops );
    }

    /**
     * Displays the output, the topic list
     *
     * @since bbPress (r2653)
     *
     * @param mixed $args
     * @param array $instance
     * @uses apply_filters() Calls 'bbp_topic_widget_title' with the title
     * @uses bbp_set_query_name() To set the query name to 'bbp_widget'
     * @uses bbp_reset_query_name() To reset the query name
     * @uses bbp_has_topics() The main topic loop
     * @uses bbp_topics() To check whether there are more topics available
     *                     in the loop
     * @uses bbp_the_topic() Loads up the current topic in the loop
     * @uses bbp_topic_permalink() To display the topic permalink
     * @uses bbp_topic_title() To display the topic title
     * @uses bbp_get_topic_last_active_time() To get the topic last active
     *                                         time
     * @uses bbp_get_reply_author_link() To get the reply author link
     * @uses bbp_get_reply_author() To get the reply author name
     * @uses bbp_get_author_link() To get the author link
     * @uses bbp_get_topic_id() To get the topic id
     * @uses bbp_get_topic_reply_count() To get the topic reply count
     */
    function widget( $args, $instance ) {

        extract( $args );

        $title        = apply_filters( 'bbp_topic_widget_title', $instance['title'] );
        $max_shown    = !empty( $instance['max_shown']    ) ? (int) $instance['max_shown'] : 5;
        $show_date    = !empty( $instance['show_date']    ) ? 'on'                         : false;
        $parent_forum = !empty( $instance['parent_forum'] ) ? $instance['parent_forum']    : 'any';
        $pop_check    = ( $instance['pop_check'] < $max_shown || empty( $instance['pop_check'] ) ) ? -1 : $instance['pop_check'];

        // Query defaults
        $topics_query = array(
            'author'         => 1,
            'post_parent'    => $parent_forum,
            'posts_per_page' => $max_shown > $pop_check ? $max_shown : $pop_check,
            'posts_per_page' => $max_shown,
            'show_stickies'  => false,
            'order'          => 'DESC',
        );

        bbp_set_query_name( 'bbp_widget' );

        // Topics exist
        if ( bbp_has_topics( $topics_query ) ) :

            // Sort by time
            if ( $pop_check < $max_shown ) :

                echo $before_widget;
                echo $before_title . $title . $after_title; ?>

                <ul>

                    <?php while ( bbp_topics() ) : bbp_the_topic(); ?>
                    <?php $author_link = bbp_get_user_profile_link( $author_id ); ?>
                        <li>
                            <a class="bbp-forum-title" href="<?php bbp_topic_permalink(); ?>" title="<?php bbp_topic_title(); ?>"><?php bbp_topic_title(); ?></a>
                            <span>Posted <?php if ( $show_date == 'on' ) _e( '' . bbp_get_topic_last_active_time() . ' ago' ); ?> by <a href="<?php bbp_get_author_link(); ?>" title="<?php bbp_get_reply_author(); ?>"><?php _e( '' . bbp_get_reply_author() . ''); ?></a></span> <!-- author url <?php bbp_get_reply_author_link(); ?> -->
                        </li>

                    <?php endwhile; ?>

                </ul>

                <?php echo $after_widget;

            // Sort by popularity
            elseif ( $pop_check >= $max_shown ) :

                echo $before_widget;
                echo $before_title . $title . $after_title;

                while ( bbp_topics() ) {
                    bbp_the_topic();
                    $topics[bbp_get_topic_id()] = bbp_get_topic_reply_count();
                }

                arsort( $topics );
                $topic_count = 1;

                ?>

                <ul>

                    <?php foreach ( $topics as $topic_id => $topic_reply_count ) : ?>

                        <li><a class="bbp-topic-title" href="<?php bbp_topic_permalink( $topic_id ); ?>" title="<?php bbp_topic_title( $topic_id ); ?>"><?php bbp_topic_title( $topic_id ); ?></a><?php if ( $show_date == 'on' ) _e( ', ' . bbp_get_topic_last_active_time( $topic_id ) . ' ago' ); ?></li>

                    <?php

                        $topic_count++;

                        if ( $topic_count > $max_shown )
                            break;

                    endforeach; ?>

                </ul>

                <?php echo $after_widget;

            endif;
        endif;

        bbp_reset_query_name();

    }

    /**
     * Update the forum widget options
     *
     * @since bbPress (r2653)
     *
     * @param array $new_instance The new instance options
     * @param array $old_instance The old instance options
     */
    function update( $new_instance, $old_instance ) {
        $instance              = $old_instance;
        $instance['title']     = strip_tags( $new_instance['title']     );
        $instance['max_shown'] = strip_tags( $new_instance['max_shown'] );
        $instance['show_date'] = strip_tags( $new_instance['show_date'] );
        $instance['pop_check'] = strip_tags( $new_instance['pop_check'] );

        return $instance;
    }

    /**
     * Output the topic widget options form
     *
     * @since bbPress (r2653)
     *
     * @param $instance Instance
     * @uses BAM_Topics_Widget::get_field_id() To output the field id
     * @uses BAM_Topics_Widget::get_field_name() To output the field name
     */
    function form( $instance ) {
        $title     = !empty( $instance['title']     ) ? esc_attr( $instance['title']     ) : '';
        $max_shown = !empty( $instance['max_shown'] ) ? esc_attr( $instance['max_shown'] ) : '';
        $show_date = !empty( $instance['show_date'] ) ? esc_attr( $instance['show_date'] ) : '';
        $pop_check = !empty( $instance['pop_check'] ) ? esc_attr( $instance['pop_check'] ) : ''; ?>

        <p><label for="<?php echo $this->get_field_id( 'title'     ); ?>"><?php _e( 'Title:',                  'bbpress' ); ?> <input class="widefat" id="<?php echo $this->get_field_id( 'title'     ); ?>" name="<?php echo $this->get_field_name( 'title'     ); ?>" type="text" value="<?php echo $title; ?>" /></label></p>
        <p><label for="<?php echo $this->get_field_id( 'max_shown' ); ?>"><?php _e( 'Maximum topics to show:', 'bbpress' ); ?> <input class="widefat" id="<?php echo $this->get_field_id( 'max_shown' ); ?>" name="<?php echo $this->get_field_name( 'max_shown' ); ?>" type="text" value="<?php echo $max_shown; ?>" /></label></p>
        <p><label for="<?php echo $this->get_field_id( 'show_date' ); ?>"><?php _e( 'Show post date:',         'bbpress' ); ?> <input type="checkbox" id="<?php echo $this->get_field_id( 'show_date' ); ?>" name="<?php echo $this->get_field_name( 'show_date' ); ?>" <?php checked( 'on', $show_date ); ?> /></label></p>
        <p>
            <label for="<?php echo $this->get_field_id( 'pop_check' ); ?>"><?php _e( 'Popularity check:',  'bbpress' ); ?> <input class="widefat" id="<?php echo $this->get_field_id( 'pop_check' ); ?>" name="<?php echo $this->get_field_name( 'pop_check' ); ?>" type="text" value="<?php echo $pop_check; ?>" /></label>
            <br /><small><?php _e( 'Number of topics back to check reply count to determine popularity. A number less than the maximum number of topics to show disables the check.', 'bbpress' ); ?></small>
        </p>

        <?php
    }
}