142 lines
4.6 KiB
PHP
142 lines
4.6 KiB
PHP
<?php
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/**
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* Categories widget class
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*
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* @since 2.8.0
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* @package WordPress
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* @subpackage Widgets
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*/
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class WP_Widget_Categories extends WP_Widget {
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public function __construct() {
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$widget_ops = array( 'classname' => 'widget_categories', 'description' => __( "A list or dropdown of categories." ) );
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parent::__construct('categories', __('Categories'), $widget_ops);
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}
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/**
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* @staticvar bool $first_dropdown
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*
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* @param array $args
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* @param array $instance
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*/
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public function widget( $args, $instance ) {
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static $first_dropdown = true;
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
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$title = apply_filters( 'widget_title', empty( $instance['title'] ) ? __( 'Categories' ) : $instance['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 ( $d ) {
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$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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* Filter the arguments for the Categories widget drop-down.
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*
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* @since 2.8.0
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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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*/
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wp_dropdown_categories( apply_filters( 'widget_categories_dropdown_args', $cat_args ) );
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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( $dropdown_id ); ?>" );
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function onCatChange() {
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if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) {
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location.href = "<?php echo home_url(); ?>/?cat=" + dropdown.options[ dropdown.selectedIndex ].value;
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}
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}
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dropdown.onchange = onCatChange;
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})();
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/* ]]> */
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</script>
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<?php
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} else {
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?>
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<ul>
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<?php
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$cat_args['title_li'] = '';
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/**
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* Filter the arguments 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 $cat_args An array of Categories widget options.
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*/
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wp_list_categories( apply_filters( 'widget_categories_args', $cat_args ) );
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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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* @param array $new_instance
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* @param array $old_instance
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* @return array
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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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* @param array $instance
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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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