Related Posts Slider Widget

gistfile1.txt

<?php
/*
Plugin Name: WooSlider - Related Posts Slider
Plugin URI: http://woothemes.com/
Description: Related Posts WooSlider slideshow.
Version: 1.0.0
Author: WooThemes
Author URI: http://woothemes.com/
License: GPL version 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*/
 
    if ( ! is_file( $dir = WPMU_PLUGIN_DIR . '/wooslider/widgets/widget-wooslider-base.php' ) ) {
        if ( ! is_file( $dir = WP_PLUGIN_DIR . '/wooslider/widgets/widget-wooslider-base.php' ) )
            $dir = null;
    }
    if ($dir !== null) {
        require_once( $dir );
        add_action( 'widgets_init', create_function('', 'return register_widget("WooSlider_Widget_RelatedPosts");'), 1 );
        add_filter( 'widget_update_callback', array( 'WooSlider_Widget_RelatedPosts', 'save_widget_form' ), 10, 2 );
        add_action( 'in_widget_form', array( 'WooSlider_Widget_RelatedPosts', 'widget_form_html' ), 10, 3 );
   }
 
class WooSlider_Widget_RelatedPosts extends WooSlider_Widget_Base { 
 
  public function __construct () {
		$this->slider_type = 'posts';
		$this->woo_widget_cssclass = 'widget_wooslider_slideshow_relatedposts';
		$this->woo_widget_description = __( 'A slideshow of recent posts on your site', 'wooslider_widget_relatedposts' );
		$this->woo_widget_idbase = 'wooslider_slideshow_relatedposts';
		$this->woo_widget_title = __('Related Posts Slideshow (WooSlider)', 'wooslider_widget_relatedposts' );
 
		$this->init();
 
		$this->defaults = array('title' => __( 'Related Posts', 'wooslider_widget_relatedposts' ));
        
	} // End Constructor
 
    function remove_current_post( $query ) {
        global $post;
        if ( is_single() ) {
            $query->set('post__not_in', array($post->ID));
            return;
        }
    }
 
    protected function generate_slideshow ( $instance ) {
		global $wooslider, $post;
		$settings = $wooslider->settings->get_settings();
		$settings['slider_type'] = $this->slider_type;
 
		$extra_args = array();
 
        foreach ( $instance as $k => $v ) {
            if ( ! in_array( $k, array_keys( $settings ) ) ) {
                $extra_args[$k] = esc_attr( $v );
               
            } 
        }
 
        // Make sure the various settings are applied.
        if ( isset( $instance['show_advanced_settings'] ) && ( $instance['show_advanced_settings'] == true ) ) {
            foreach ( $settings as $k => $v ) {
                if ( isset( $instance[$k] ) && ( $instance[$k] != $settings[$k] ) ) {
                    $settings[$k] = esc_attr( $instance[$k] );
                }
            }
        }
 
        if( is_single() ) {
            if( $instance['tags'] == true ) {
                $terms_tags = get_the_terms( $post->ID, 'post_tag' );
                $count = 0;
                if ( !empty( $terms_tags ) ) {
                    $extra_args['tag'] = '';
                    foreach( $terms_tags as $k => $v ) {
                        $count++;
                        if ( $count > 1 ) {
                            $extra_args['tag'] .= '+';
                        }
                        $extra_args['tag'] .= esc_attr( $v->slug );
                    }
                }
            }
             
            if( $instance['cats'] == true ) {
                $terms_categories = get_the_terms( $post->ID, 'category' );
                $count = 0;
                if ( !empty( $terms_categories ) ) {
                    $extra_args['category'] = '';
                    foreach ( $terms_categories as $k => $v ) {
                        $count++;
                        if ( $count > 1 ) {
                            $extra_args['category'] .= ',';
                        }
                        $extra_args['category'] .= esc_attr( $v->slug );
                    }
                }
            }
        } 
        else {
            if ( isset( $instance['tag'] ) && is_array( $instance['tag'] ) ) {
                $count = 0;
                $extra_args['tag'] = '';
                foreach ( $instance['tag'] as $k => $v ) {
                    $count++;
                    if ( $count > 1 ) {
                        $extra_args['tag'] .= '+';
                    }
                    $extra_args['tag'] .= esc_attr( $v );
                }   
            }
 
            if ( isset( $instance['category'] ) && is_array( $instance['category'] ) ) {
                $count = 0;
                $extra_args['category']='';
                foreach ( $instance['category'] as $k => $v ) {
                    $count++;
                    if ( $count > 1 ) {
                        $extra_args['category'] .= ',';
                    }
                    $extra_args['category'] .= esc_attr( $v );
                }
            }
        }
 
        add_action( 'pre_get_posts', array( 'WooSlider_Widget_RelatedPosts', 'remove_current_post' ) );
		$html = wooslider( array( 'slider_type' => 'posts', 'smoothheight' => 'true', 'randomize' => 'true' ), $extra_args, false );
        remove_action( 'pre_get_posts', array( 'WooSlider_Widget_RelatedPosts', 'remove_current_post' ) );
 
		return $html;
	} // End generate_slideshow()
 
    public function save_widget_form ( $instance, $new_instance, $old_instance, $obj ) {
        if ( isset( $new_instance['tags'] ) ) {
            $instance['tags'] = $new_instance['tags'];
        } else {
            $instance['tags'] = false;
        }
        if ( isset( $new_instance['cats'] ) ) {
            $instance['cats'] = $new_instance['cats'];
        } else {
            $instance['cats'] = false;
        }
        return $instance;
    } // End save_widget_form()
 
    public function widget_form_html ( $obj, $return, $instance ) {
        global $return;
        if(isset($obj->woo_widget_idbase) && $obj->woo_widget_idbase == 'wooslider_slideshow_relatedposts' && is_active_widget(false, false, $obj->woo_widget_idbase, true )) {
            if ( ! isset( $instance['tags'] ) ) {
              $instance['tags'] = 1;
            }
            if ( ! isset( $instance['cats'] ) ) {
              $instance['cats'] = 1;
            }
 ?>
            <p>
              <input id="<?php echo $obj->get_field_id('tags'); ?>" name="<?php echo $obj->get_field_name('tags'); ?>" type="checkbox" value="1" <?php checked( $instance['tags'], 1 ); ?>/>
              <label for="<?php echo $obj->get_field_id('tags'); ?>"><?php _e('Filter by Tags'); ?></label> 
            </p>
            <p>
              <input id="<?php echo $obj->get_field_id('cats'); ?>" name="<?php echo $obj->get_field_name('cats'); ?>" type="checkbox" value="1" <?php checked( $instance['cats'], 1 ); ?>/>
              <label for="<?php echo $obj->get_field_id('cats'); ?>"><?php _e('Filter by Categories'); ?></label>
            </p>
        
<?php
        }
        $return = null;   
 
    } // End widget_form_html()
   
} // end class WooSlider_Widget_RelatedPosts
 
?>