「固定ページ」ウィジェットのカスタマイズ

gistfile1.diff

-class WP_Widget_Pages extends WP_Widget {
+class WP_My_Widget_Pages extends WP_Widget {

  function __construct() {
		$widget_ops = array('classname' => 'widget_pages', 'description' => __( 'Your site’s WordPress Pages') );
-		parent::__construct('pages', __('Pages'), $widget_ops);
+		parent::__construct('pages', 'Pages', $widget_ops);
	}

	function widget( $args, $instance ) {
		extract( $args );

-		$title = apply_filters('widget_title', empty( $instance['title'] ) ? __( 'Pages' ) : $instance['title'], $instance, $this->id_base);
+		$title = 'Pages';
		$sortby = empty( $instance['sortby'] ) ? 'menu_order' : $instance['sortby'];
		$exclude = empty( $instance['exclude'] ) ? '' : $instance['exclude'];

		if ( $sortby == 'menu_order' )
			$sortby = 'menu_order, post_title';

		$out = wp_list_pages( apply_filters('widget_pages_args', array('title_li' => '', 'echo' => 0, 'sort_column' => $sortby, 'exclude' => $exclude) ) );

		if ( !empty( $out ) ) {
			echo $before_widget;
			if ( $title)
				echo $before_title . $title . $after_title;
		?>
		<ul>
			<?php echo $out; ?>
		</ul>
		<?php
			echo $after_widget;
		}
	}

	function update( $new_instance, $old_instance ) {
		$instance = $old_instance;
		$instance['title'] = strip_tags($new_instance['title']);
		if ( in_array( $new_instance['sortby'], array( 'post_title', 'menu_order', 'ID' ) ) ) {
			$instance['sortby'] = $new_instance['sortby'];
		} else {
			$instance['sortby'] = 'menu_order';
		}

		$instance['exclude'] = strip_tags( $new_instance['exclude'] );

		return $instance;
	}

	function form( $instance ) {
		//Defaults
		$instance = wp_parse_args( (array) $instance, array( 'sortby' => 'post_title', 'title' => '', 'exclude' => '') );
		$title = esc_attr( $instance['title'] );
		$exclude = esc_attr( $instance['exclude'] );
	?>
-		<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('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 $title; ?>" /></p>
		<p>
			<label for="<?php echo $this->get_field_id('sortby'); ?>"><?php _e( 'Sort by:' ); ?></label>
			<select name="<?php echo $this->get_field_name('sortby'); ?>" id="<?php echo $this->get_field_id('sortby'); ?>" class="widefat">
				<option value="post_title"<?php selected( $instance['sortby'], 'post_title' ); ?>><?php _e('Page title'); ?></option>
				<option value="menu_order"<?php selected( $instance['sortby'], 'menu_order' ); ?>><?php _e('Page order'); ?></option>
				<option value="ID"<?php selected( $instance['sortby'], 'ID' ); ?>><?php _e( 'Page ID' ); ?></option>
			</select>
		</p>
		<p>
			<label for="<?php echo $this->get_field_id('exclude'); ?>"><?php _e( 'Exclude:' ); ?></label> <input type="text" value="<?php echo $exclude; ?>" name="<?php echo $this->get_field_name('exclude'); ?>" id="<?php echo $this->get_field_id('exclude'); ?>" class="widefat" />
			<br />
			<small><?php _e( 'Page IDs, separated by commas.' ); ?></small>
		</p>
<?php
	}

}
+
+add_action( 'widgets_init', 'my_widgets_init' );
+function my_widgets_init() {
+	unregister_widget( 'WP_Widget_Pages' );
+	register_widget( 'WP_My_Widget_Pages' );
+}