File includes/abstracts/abstract-wc-widget.php

  1 <?php
  2 /**
  3  * Abstract Widget Class
  4  *
  5  * @author      WooThemes
  6  * @category    Widgets
  7  * @package     WooCommerce/Abstracts
  8  * @version     2.1.0
  9  * @extends     WP_Widget
 10  */
 11 abstract class WC_Widget extends WP_Widget {
 12 
 13     public $widget_cssclass;
 14     public $widget_description;
 15     public $widget_id;
 16     public $widget_name;
 17     public $settings;
 18 
 19     /**
 20      * Constructor
 21      */
 22     public function __construct() {
 23         $widget_ops = array(
 24             'classname'   => $this->widget_cssclass,
 25             'description' => $this->widget_description
 26         );
 27 
 28         $this->WP_Widget( $this->widget_id, $this->widget_name, $widget_ops );
 29 
 30         add_action( 'save_post', array( $this, 'flush_widget_cache' ) );
 31         add_action( 'deleted_post', array( $this, 'flush_widget_cache' ) );
 32         add_action( 'switch_theme', array( $this, 'flush_widget_cache' ) );
 33     }
 34 
 35     /**
 36      * get_cached_widget function.
 37      */
 38     function get_cached_widget( $args ) {
 39         $cache = wp_cache_get( $this->widget_id, 'widget' );
 40 
 41         if ( ! is_array( $cache ) )
 42             $cache = array();
 43 
 44         if ( isset( $cache[ $args['widget_id'] ] ) ) {
 45             echo $cache[ $args['widget_id'] ];
 46             return true;
 47         }
 48 
 49         return false;
 50     }
 51 
 52     /**
 53      * Cache the widget
 54      */
 55     public function cache_widget( $args, $content ) {
 56         $cache[ $args['widget_id'] ] = $content;
 57 
 58         wp_cache_set( $this->widget_id, $cache, 'widget' );
 59     }
 60 
 61     /**
 62      * Flush the cache
 63      * @return [type]
 64      */
 65     public function flush_widget_cache() {
 66         wp_cache_delete( $this->widget_id, 'widget' );
 67     }
 68 
 69     /**
 70      * update function.
 71      *
 72      * @see WP_Widget->update
 73      * @access public
 74      * @param array $new_instance
 75      * @param array $old_instance
 76      * @return array
 77      */
 78     function update( $new_instance, $old_instance ) {
 79         $instance = $old_instance;
 80 
 81         if ( ! $this->settings )
 82             return $instance;
 83 
 84         foreach ( $this->settings as $key => $setting ) {
 85             if ( isset( $new_instance[ $key ] ) ) {
 86                 $instance[ $key ] = sanitize_text_field( $new_instance[ $key ] );
 87             } elseif ( 'checkbox' === $setting['type'] ) {
 88                 $instance[ $key ] = 0;
 89             }
 90         }
 91 
 92         $this->flush_widget_cache();
 93 
 94         return $instance;
 95     }
 96 
 97     /**
 98      * form function.
 99      *
100      * @see WP_Widget->form
101      * @access public
102      * @param array $instance
103      * @return void
104      */
105     function form( $instance ) {
106 
107         if ( ! $this->settings )
108             return;
109 
110         foreach ( $this->settings as $key => $setting ) {
111 
112             $value   = isset( $instance[ $key ] ) ? $instance[ $key ] : $setting['std'];
113 
114             switch ( $setting['type'] ) {
115                 case "text" :
116                     ?>
117                     <p>
118                         <label for="<?php echo $this->get_field_id( $key ); ?>"><?php echo $setting['label']; ?></label>
119                         <input class="widefat" id="<?php echo esc_attr( $this->get_field_id( $key ) ); ?>" name="<?php echo $this->get_field_name( $key ); ?>" type="text" value="<?php echo esc_attr( $value ); ?>" />
120                     </p>
121                     <?php
122                 break;
123                 case "number" :
124                     ?>
125                     <p>
126                         <label for="<?php echo $this->get_field_id( $key ); ?>"><?php echo $setting['label']; ?></label>
127                         <input class="widefat" id="<?php echo esc_attr( $this->get_field_id( $key ) ); ?>" name="<?php echo $this->get_field_name( $key ); ?>" type="number" step="<?php echo esc_attr( $setting['step'] ); ?>" min="<?php echo esc_attr( $setting['min'] ); ?>" max="<?php echo esc_attr( $setting['max'] ); ?>" value="<?php echo esc_attr( $value ); ?>" />
128                     </p>
129                     <?php
130                 break;
131                 case "select" :
132                     ?>
133                     <p>
134                         <label for="<?php echo $this->get_field_id( $key ); ?>"><?php echo $setting['label']; ?></label>
135                         <select class="widefat" id="<?php echo esc_attr( $this->get_field_id( $key ) ); ?>" name="<?php echo $this->get_field_name( $key ); ?>">
136                             <?php foreach ( $setting['options'] as $option_key => $option_value ) : ?>
137                                 <option value="<?php echo esc_attr( $option_key ); ?>" <?php selected( $option_key, $value ); ?>><?php echo esc_html( $option_value ); ?></option>
138                             <?php endforeach; ?>
139                         </select>
140                     </p>
141                     <?php
142                 break;
143                 case "checkbox" :
144                     ?>
145                     <p>
146                         <input id="<?php echo esc_attr( $this->get_field_id( $key ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( $key ) ); ?>" type="checkbox" value="1" <?php checked( $value, 1 ); ?> />
147                         <label for="<?php echo $this->get_field_id( $key ); ?>"><?php echo $setting['label']; ?></label>
148                     </p>
149                     <?php
150                 break;
151             }
152         }
153     }
154 }