Cactus Brick Flickr Widget

cb-flickr-widget.php

<?php
/*
Plugin Name: Cactus Brick Flickr Widget
Plugin URI: http://cactusbrick.org
Description: Grab photos from Flickr
Version: 1.0
Author: Nate Jacobs
Author URI: http://natejacobs.org
License: GPLv2 or later
*/

add_action( 'widgets_init', 'CactusBrickFlickrWidget' );
function CactusBrickFlickrWidget()
{
	register_widget( 'CactusBrickFlickrWidget' );
}

/** 
 *	Flickr Photos Widget
 *
 *	Creates a widget that shows the recent Flickr photos by a user or group
 *
 *	@author		Nate Jacobs
 *	@since		1.0
 */
class CactusBrickFlickrWidget extends WP_Widget
{
	/** 
	 *	Plugin Load
	 *
	 *	Generate options for the widget display in the admin dashboard.
	 *
	 *	@author		Nate Jacobs
	 *	@since		1.0
	 */
	public function __construct()
	{
		$options = array( 'description' => __( 'Display photos from Flickr.com by a user or group.' ), 'classname' => 'cactus_brick_flickr' );
		parent::__construct( 'cactus_brick_flickr_widget', $name = __( 'Cactus Brick Flickr' ), $options );
	}
	
	/** 
	 *	Create Widget Form
	 *
	 *	Create the necessary form to customize the widget.
         *      Use http://idgettr.com to get the ID for a group or user
	 *
	 *	@uses		title	@since 1.0
	 *
	 *	@author		Nate Jacobs
	 *	@since		1.0
	 */
	public function form( $instance )
	{
		$instance = wp_parse_args( ( array ) $instance, array( 'title' => __( 'Cactus Brick Flickr' ), 'flickr_id' => __( ' ' ) ) );
		$title = esc_attr( $instance['title'] );
		$flickr_id = esc_attr( $instance['flickr_id'] );
		?>
		<p>
			<label for="<?php echo $this->get_field_id( 'title' ); ?>">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>
		<p>
			<label for="<?php echo $this->get_field_id( 'flickr_id' ); ?>">Flickr ID:</label>
			<input class="widefat" id="<?php echo $this->get_field_id( 'flickr_id' ); ?>" name="<?php echo $this->get_field_name( 'flickr_id' ); ?>" type="text" value="<?php echo $flickr_id; ?>">
		</p>
		<?php
	}
	
	/** 
	 *	Update Widget Options
	 *
	 *	Updates any options used to customize the widget.
	 *
	 *	@author		Nate Jacobs
	 *	@since		1.0
	 */
	public function update( $new_instance, $old_instance )
	{
		$instance = $old_instance;
		$instance['title'] = strip_tags( $new_instance['title'] );
		$instance['flickr_id'] = strip_tags( $new_instance['flickr_id'] );
		return $instance;
	}
	
	/** 
	 *	Create Cactus Brick Flickr Widget
	 *
	 *	Generates the widget that displays the photos from a user or group.
	 *
	 *	@author		Nate Jacobs
	 *	@since		1.0
	 */
	public function widget( $args, $instance )
	{
		extract( $args );
		$title = apply_filters('widget_title', $instance['title'] );
		$flickr_id = $instance['flickr_id'];
		
		$result = wp_remote_get( "http://api.flickr.com/services/feeds/groups_pool.gne?id=$flickr_id&format=php_serial", array( 'method' => 'GET' ) );
		$this->httpcode = $result['response']['code'];
 		$photos = unserialize( $result['body'] );

		echo $before_widget;
		if ( $title )
			echo $before_title . '<a href="http://www.flickr.com/groups/cactusbrick/pool/">'. $title .'</a>' . $after_title;
		try {
			if ( $this->httpcode == '200' )
			{
				foreach ( $photos['items'] as $photo )
				{
					echo "<a href=$photo[url]><img class='flickr-img' src=$photo[thumb_url]></a>";
				}
			}
			else
			{
				$error = 'There are no photos to display';
  	  			throw new Exception($error);
			}
		}
		catch ( Exception $e )
		{
			echo $e->getMessage();
		}
		echo $after_widget;
	}
}