gallery-widget-widget.php

<?php

class Post_Gallery_Widget extends WP_Widget {

  /** constructor */
  function Post_Gallery_Widget() {
    parent::WP_Widget(
      false, 
      $name = 'Gallery Widget ', 
      $widget_options = array(
        'description' => "A gallery for listing images for a given post/page, for using with Page Layout",
      )
    );
    add_action( 'save_post', array(&$this, 'flush_widget_cache') );
		add_action( 'deleted_post', array(&$this, 'flush_widget_cache') );
		add_action( 'switch_theme', array(&$this, 'flush_widget_cache') );
  }

  /** @see WP_Widget::widget */
  function widget($args, $instance) {

    extract( $args );
    $cache = wp_cache_get('widget_page_gallery', 'widget');
    $title = apply_filters('widget_title', $instance['title']);

    // we only want to run this on the front end of the site, and only 
    // want one jquery
    if ( !is_admin() ) { 
        wp_register_script( 
        'jquery-cycle',
        get_bloginfo('template_directory') . 'js/jquery.cycle.lite.1.1.js',
        array('jquery'),
        '0.1'
      );
      print wp_enqueue_script('jquery-cycle');
      die("no, I don't know why jquery isn't loading either");
   }
 

    // generate markup for each widget
    echo $before_widget;

    // sadly this seems to be the most readable way to pass args into
    // this gallery function

    // settings defined in the form will be added here
    echo do_shortcode('[gallery columns="1" size="medium"]');
 
    // add the jquery cycle call here
    echo $after_widget;
  }

  /** @see WP_Widget::update */
  function update($new_instance, $old_instance) {				

    // create a back up we we an access it when updating content
    $instance = $old_instance;
    $instance['title'] = strip_tags($new_instance['title']);

    return $instance;
  }

  /** @see WP_Widget::form */
  function form($instance) {				
    $title = esc_attr($instance['title']);
    ?>
        <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>
  <?php 
  }
?>