Configurable Facebook Likebox

gt_social_facebook_widget.php

/** 
 * Facebook Widget
 * - Display the Facebook like box in all of it's configuration glory
 *
 */
class GT_Social_Facebook extends WP_Widget {

	function GT_Social_Facebook(){
		$widget_ops = array( 'classname' => 'facebook-like-box', 'description' => _x('A widget for displaying a Facebook like box.', 'gt') );
		/* Widget control settings. */
		$control_ops = array( 'width' => 300, 'height' => 350, 'id_base' => 'gt-facebook-like' );

		parent::WP_Widget( false, _x('Facebook Widget', 'gt'), $widget_ops);
	}
	
	function form( $instance ) {
		$instance = wp_parse_args( (array) $instance, array( 'title' => 'Join Us on Facebook', 'url' => '', 'show_faces' => false, 'show_stream' => false, 'show_header' => false, 'show_one_row_faces' => false, 'width' => 280, 'show_title' => 'on' ) ); 
		
		$wide = 390;
		$narrow = 280;
		
		?>
		<p><label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e('Title', 'gt'); ?></label> &nbsp; (<label class="nonessential" for="<?php echo $this->get_field_name('show_title'); ?>"><input type="checkbox" name="<?php echo $this->get_field_name('show_title'); ?>" id="<?php echo $this->get_field_id('show_title'); ?>" <?php checked( $instance['show_title'], 'on' ); ?> /> <?php _e('Show', 'gt') ?></label>)<br />
		<input id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php if ( isset($instance['title']) ) echo $instance['title']; ?>" class="widefat" />
		</p>
		<p><label for="<?php echo $this->get_field_id( 'url' ); ?>"><?php _e('Facebook URL', 'gt'); ?></label><br />
		<input id="<?php echo $this->get_field_id( 'url' ); ?>" name="<?php echo $this->get_field_name( 'url' ); ?>" value="<?php if ( isset($instance['url']) ) echo $instance['url']; ?>" class="widefat" />
		</p>
		<p><?php _e('Options', 'gt'); ?></p>
		<p><label for="<?php echo $this->get_field_name('show_faces'); ?>"><input type="checkbox" name="<?php echo $this->get_field_name('show_faces'); ?>" id="<?php echo $this->get_field_id('show_faces'); ?>" <?php checked( $instance['show_faces'], 'on' ); ?> /> <?php _e('Show Faces', 'gt') ?></label> (<label for="<?php echo $this->get_field_name('show_one_row_faces'); ?>"><input type="checkbox" name="<?php echo $this->get_field_name('show_one_row_faces'); ?>" id="<?php echo $this->get_field_id('show_one_row_faces'); ?>" <?php checked( $instance['show_one_row_faces'], 'on' ); ?> /> <?php _e('Only 1 Row', 'gt') ?></label>)</p>
		
		<p><label for="<?php echo $this->get_field_name('show_stream'); ?>"><input type="checkbox" name="<?php echo $this->get_field_name('show_stream'); ?>" id="<?php echo $this->get_field_id('show_stream'); ?>" <?php checked( $instance['show_stream'], 'on' ); ?> /> <?php _e('Show Stream', 'gt') ?></label></p>
		<p><label for="<?php echo $this->get_field_name('show_header'); ?>"><input type="checkbox" name="<?php echo $this->get_field_name('show_header'); ?>" id="<?php echo $this->get_field_id('show_header'); ?>" <?php checked( $instance['show_header'], 'on' ); ?> /> <?php _e('Show Header', 'gt') ?></label></p>
		<p><label for="<?php echo $this->get_field_id( 'width' ); ?>"><?php _e('Width Preset', 'gt'); ?></label><br />
		<select name="<?php echo $this->get_field_name( 'width' ); ?>" id="<?php echo $this->get_field_id( 'width' ); ?>">
			<option value="<?php echo $wide ?>" <?php selected( $instance['width'], $wide ) ?>><?php _e('Wide', 'gt') ?></option>
			<option value="<?php echo $narrow ?>" <?php selected( $instance['width'], $narrow ) ?>><?php _e('Narrow', 'gt') ?></option>
		</select></p>
	<?php
	}
	
	function update( $new_instance, $old_instance ) {
		$instance = $old_instance;

		/* Create widget settings instances. */
		$instance['title'] = strip_tags( $new_instance['title'] );
		$instance['url'] = isset($new_instance['url']) ? strip_tags( $new_instance['url'] ) : false;
		$instance['show_title'] = isset($new_instance['show_title']) ?  strip_tags( $new_instance['show_title'] ) : false;
		$instance['show_faces'] = isset($new_instance['show_faces']) ?  strip_tags( $new_instance['show_faces'] ) : false;
		$instance['show_one_row_faces'] = isset($new_instance['show_one_row_faces']) ? strip_tags( $new_instance['show_one_row_faces'] ) : false;
		$instance['show_stream'] = isset($new_instance['show_stream']) ? strip_tags( $new_instance['show_stream'] ) : false;
		$instance['show_header'] = isset($new_instance['show_header']) ? strip_tags( $new_instance['show_header'] ) : false;
		$instance['width'] = isset($new_instance['width']) ? strip_tags( $new_instance['width'] ) : 280;
		return $instance;
	}

	function widget( $args, $instance ) {
		extract( $args );

		$title = apply_filters('widget_title', $instance['title'] );
		$url = urlencode( $instance['url'] );
		$show_title = !empty($instance['show_title']) ? true : false;
		$show_faces = !empty($instance['show_faces']) ? true : false;
		$show_stream = !empty($instance['show_stream']) ? true : false;
		$show_header = !empty($instance['show_header']) ? true : false;
		$one_row_faces = !empty($instance['show_one_row_faces']) ? true : false;
		
		// Faces, Stream & Header
		if( $show_faces && $show_stream && $show_header )
			$height = 556;
		// Faces & Stream
		elseif( $show_faces && $show_stream && !$show_header )
			$height = 558;
		// Faces & Header
		elseif( $show_faces && !$show_stream && $show_header )
			$height = 290;
		// Stream & Header
		elseif( !$show_faces && $show_stream && $show_header )
			$height = 427;
		// Header or None Checked
		elseif( (!$show_faces && !$show_stream && $show_header) || (!$show_faces && !$show_stream && !$show_header) )
			$height = 62;
		// Faces & Only One Row
		elseif( $one_row_faces && $show_faces && !$show_stream && !$show_header )
			$height = 183;
		// Faces Only
		elseif( $show_faces && !$show_stream && !$show_header )
			$height = 256;
		// Stream Only
		elseif( !$show_faces && $show_stream && !$show_header )
			$height = 395;
		// Default
		else
			$height = 62;

		$width = $instance['width'] ? $instance['width'] : 280;
		
		$show_faces = $show_faces ? 'true' : 'false';
		$show_stream = $show_stream ? 'true' : 'false';
		$show_header = $show_header ? 'true' : 'false';

		/* Widget themplate */
		echo $before_widget;

		if( $show_title) 
			echo $before_title . $title . $after_title;

		echo '<iframe src="http://www.facebook.com/plugins/likebox.php?href='. $url . '&amp;width=' . $width . '&amp;colorscheme=light&amp;show_faces=' . $show_faces . '&amp;border_color=white&amp;stream=' . $show_stream . '&amp;header=' . $show_header . '&amp;height=' . $height . '" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:' . $width . 'px; height:' . $height . 'px;" allowTransparency="true"></iframe>';
		
		echo $after_widget;
	}
}


/* Register widgets */
function gt_register_widgets() {
	register_widget( 'GT_Social_Facebook' );
}

/* Load widget with widget_init function */
add_action( 'widgets_init', 'gt_register_widgets' );