WP Coda Slider: Coda Slider featured category slider with shortcodes

wpcodaslider.php

<?php //Header
/*
Plugin Name: WP Coda Slider
Plugin URI: http://wp-performance.com/wp-coda-slider/
Description: Coda Slider featured category slider with shortcodes
Author: c3mdigital, makesites
Author URI: http://c3mdigital.com/
Version: 0.2.6
License: GPL v2 - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*/

	//   You can use the short code or template tag if you need to parse posts that include a shortcode
	//   To use the template tag add (in PHP): if( function_exists('c3m_wpcodaslider') ) { c3m_wpcodaslider($id, $cat, $show, $args);}
	//   you must supply the variables when you add the function to your template.  Example: c3m_codaslider('myslider', '81', '4', 'dynamicArrows:false');
	//   this would add a slider with the id of myslider and show 4 posts from category 81 with dynamic arrows set to false.
	//   all the variables must be present and in the same order.


// initiate the wpcodaslider class, containing the bulk of the plugin logic
$my_wpcodaslider = new wpcodaslider();

// load the JavaScript dependencies
add_action ('init', 'c3m_coda_scripts');

// Main plugin class
class wpcodaslider{

	var $shortcode_name = 'wpcodaslider';
	var $pattern = '<!-- wpcodaslider -->';
	var $posts_content = '';

	function wpcodaslider() {
		add_shortcode( $this->shortcode_name, array( &$this, 'shortcode' ) );
		return $this;
	}

	// insert the shortcode in any page ie: [wpcodaslider id=slidername cat=4 show=3] will show first three post in category with id $
	function shortcode( $atts, $content = null ) {
		extract( shortcode_atts( array(
				'cat' => null,
				'id'  =>  null,
				'show' => null,
				'args' => null
			), $atts ) );

		//Make sure there is a query and name
		if (! $cat || ! $id)
				return 'Could not load slider. Mallformed shortcode.';

		$o = $this->markup( $id, $cat, $show, $args );
		
		return $o;
	}

	// the function that is used by both the shortcode and the php method to create the markup
	function markup( $id, $cat, $show, $args ){
	
       	// form the query
		$query = array(
                	'post_type' => 'post',
					'cat'  		=> $cat,
					'posts_per_page' => $show
		);
		
		// get the posts
		$posts = get_posts( $query);

		// start creating the markup
		$o = '
			<div class="coda-slider-wrapper">
					<div class="coda-slider preload" id="'. $id .'">';


		
		foreach($posts as $post){

			$o.=
				'<div class="panel" id="post-' . $post->ID . '">
						<div class="panel-wrapper">
								<h2 class="title">' . $post->post_title . '</h2>
								' . apply_filters('the_content', $post->post_content) . '
						</div> <!-- .panel-wrapper -->
				</div><!-- .panel -->';
		}


		$o.='
						</div><!-- .coda-slider .preload -->
				</div><!-- coda-slider-wrapper -->
				<script type="text/javascript">
			jQuery(document).ready(function($){
			$().ready(function() {
							$(\'#'. $id .'\').codaSlider({' . $args .'});
			});
			});
				</script>';

		return $o;

	}
}

// Helper Functions

// - Template tag method
function c3m_wpcodaslider($id, $cat, $show, $args) {
	global $my_wpcodaslider;
	
	echo $my_wpcodaslider->markup( $id, $cat, $show, $args );

	return $id;
	return $cat;
	return $show;
	return $args;

}

// - JavaScipt loader
function c3m_coda_scripts() {
	wp_enqueue_script('coda_slider', WP_PLUGIN_URL . '/wp-coda-slider/js/coda.slider.js', array( 'jquery' ));
	wp_enqueue_style('coda_slider_css', WP_PLUGIN_URL . '/wp-coda-slider/css/coda-slider-2.0.1.css');
	wp_localize_script( 'coda_slider', 'Plugin_Url', array( 'plugin_url' => WP_PLUGIN_URL ) );
}

 ?>