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182 lines
5.8 KiB
182 lines
5.8 KiB
<?php |
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/** |
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* Widget API: WP_Widget_Categories class |
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* |
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* @package WordPress |
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* @subpackage Widgets |
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* @since 4.4.0 |
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*/ |
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/** |
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* Core class used to implement a Categories widget. |
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* |
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* @since 2.8.0 |
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* |
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* @see WP_Widget |
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*/ |
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class WP_Widget_Categories extends WP_Widget { |
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/** |
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* Sets up a new Categories widget instance. |
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* |
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* @since 2.8.0 |
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*/ |
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public function __construct() { |
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$widget_ops = array( |
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'classname' => 'widget_categories', |
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'description' => __( 'A list or dropdown of categories.' ), |
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'customize_selective_refresh' => true, |
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); |
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parent::__construct( 'categories', __( 'Categories' ), $widget_ops ); |
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} |
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/** |
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* Outputs the content for the current Categories widget instance. |
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* |
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* @since 2.8.0 |
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* |
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* @staticvar bool $first_dropdown |
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* |
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* @param array $args Display arguments including 'before_title', 'after_title', |
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* 'before_widget', and 'after_widget'. |
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* @param array $instance Settings for the current Categories widget instance. |
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*/ |
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public function widget( $args, $instance ) { |
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static $first_dropdown = true; |
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$title = ! empty( $instance['title'] ) ? $instance['title'] : __( 'Categories' ); |
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
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$title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
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$c = ! empty( $instance['count'] ) ? '1' : '0'; |
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$h = ! empty( $instance['hierarchical'] ) ? '1' : '0'; |
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$d = ! empty( $instance['dropdown'] ) ? '1' : '0'; |
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echo $args['before_widget']; |
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if ( $title ) { |
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echo $args['before_title'] . $title . $args['after_title']; |
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} |
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$cat_args = array( |
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'orderby' => 'name', |
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'show_count' => $c, |
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'hierarchical' => $h, |
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); |
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if ( $d ) { |
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echo sprintf( '<form action="%s" method="get">', esc_url( home_url() ) ); |
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$dropdown_id = ( $first_dropdown ) ? 'cat' : "{$this->id_base}-dropdown-{$this->number}"; |
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$first_dropdown = false; |
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echo '<label class="screen-reader-text" for="' . esc_attr( $dropdown_id ) . '">' . $title . '</label>'; |
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$cat_args['show_option_none'] = __( 'Select Category' ); |
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$cat_args['id'] = $dropdown_id; |
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/** |
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* Filters the arguments for the Categories widget drop-down. |
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* |
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* @since 2.8.0 |
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* @since 4.9.0 Added the `$instance` parameter. |
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* |
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* @see wp_dropdown_categories() |
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* |
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* @param array $cat_args An array of Categories widget drop-down arguments. |
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* @param array $instance Array of settings for the current widget. |
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*/ |
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wp_dropdown_categories( apply_filters( 'widget_categories_dropdown_args', $cat_args, $instance ) ); |
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echo '</form>'; |
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?> |
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<script type='text/javascript'> |
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/* <![CDATA[ */ |
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(function() { |
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var dropdown = document.getElementById( "<?php echo esc_js( $dropdown_id ); ?>" ); |
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function onCatChange() { |
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if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) { |
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dropdown.parentNode.submit(); |
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} |
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} |
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dropdown.onchange = onCatChange; |
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})(); |
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/* ]]> */ |
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</script> |
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<?php |
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} else { |
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?> |
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<ul> |
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<?php |
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$cat_args['title_li'] = ''; |
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/** |
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* Filters the arguments for the Categories widget. |
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* |
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* @since 2.8.0 |
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* @since 4.9.0 Added the `$instance` parameter. |
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* |
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* @param array $cat_args An array of Categories widget options. |
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* @param array $instance Array of settings for the current widget. |
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*/ |
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wp_list_categories( apply_filters( 'widget_categories_args', $cat_args, $instance ) ); |
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?> |
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</ul> |
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<?php |
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} |
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echo $args['after_widget']; |
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} |
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/** |
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* Handles updating settings for the current Categories widget instance. |
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* |
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* @since 2.8.0 |
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* |
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* @param array $new_instance New settings for this instance as input by the user via |
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* WP_Widget::form(). |
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* @param array $old_instance Old settings for this instance. |
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* @return array Updated settings to save. |
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*/ |
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public function update( $new_instance, $old_instance ) { |
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$instance = $old_instance; |
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$instance['title'] = sanitize_text_field( $new_instance['title'] ); |
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$instance['count'] = !empty($new_instance['count']) ? 1 : 0; |
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$instance['hierarchical'] = !empty($new_instance['hierarchical']) ? 1 : 0; |
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$instance['dropdown'] = !empty($new_instance['dropdown']) ? 1 : 0; |
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return $instance; |
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} |
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/** |
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* Outputs the settings form for the Categories widget. |
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* |
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* @since 2.8.0 |
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* |
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* @param array $instance Current settings. |
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*/ |
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public function form( $instance ) { |
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//Defaults |
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$instance = wp_parse_args( (array) $instance, array( 'title' => '') ); |
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$title = sanitize_text_field( $instance['title'] ); |
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$count = isset($instance['count']) ? (bool) $instance['count'] :false; |
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$hierarchical = isset( $instance['hierarchical'] ) ? (bool) $instance['hierarchical'] : false; |
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$dropdown = isset( $instance['dropdown'] ) ? (bool) $instance['dropdown'] : false; |
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?> |
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<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e( 'Title:' ); ?></label> |
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<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> |
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<p><input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id('dropdown'); ?>" name="<?php echo $this->get_field_name('dropdown'); ?>"<?php checked( $dropdown ); ?> /> |
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<label for="<?php echo $this->get_field_id('dropdown'); ?>"><?php _e( 'Display as dropdown' ); ?></label><br /> |
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<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id('count'); ?>" name="<?php echo $this->get_field_name('count'); ?>"<?php checked( $count ); ?> /> |
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<label for="<?php echo $this->get_field_id('count'); ?>"><?php _e( 'Show post counts' ); ?></label><br /> |
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<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id('hierarchical'); ?>" name="<?php echo $this->get_field_name('hierarchical'); ?>"<?php checked( $hierarchical ); ?> /> |
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<label for="<?php echo $this->get_field_id('hierarchical'); ?>"><?php _e( 'Show hierarchy' ); ?></label></p> |
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<?php |
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} |
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}
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