Inventory_Presser_Shortcode_Photo_Slider

class Inventory_Presser_Shortcode_Photo_Slider
{
	/**
	 * add
	 * 
	 * Adds two shortcodes
	 *
	 * @return void
	 */
	function add()
	{
		add_shortcode( 'invp-photo-slider', array( $this, 'content') );
		add_shortcode( 'invp_photo_slider', array( $this, 'content') );
	}

	/**
	 * hooks
	 * 
	 * Adds hooks that power the shortcode
	 *
	 * @return void
	 */
	function hooks()
	{
		add_action( 'init', array( $this, 'add' ) );
	}
	
	/**
	 * content
	 * 
	 * Creates the HTML content of the shortcode
	 *
	 * @param  array $atts
	 * @return string HTML that renders a vehicle photo flexslider
	 */
	function content( $atts )
	{
		//Canvass shortcode attributes
		$atts = shortcode_atts( array(
			'include_carousel' => true,
		), $atts, 'photo_slider' ); //Use shortcode_atts_inventory_slider to filter the incoming attributes

		if( is_string( $atts['include_carousel'] ) )
		{
			$atts['include_carousel'] = 'true' === $atts['include_carousel'];
		}

		//Need flexslider for this content
		wp_enqueue_style( 'flexslider' );
		wp_enqueue_style( 'invp-flexslider' );
		wp_enqueue_script( 'invp-flexslider', '', array(), false, true );

		$image_url_lists = invp_get_the_photos( array( 'large', 'thumb' ) );

		ob_start();
		?>
		<div id="slider-width"></div>
		<div id="slider" class="flexslider">
			<ul class="slides"><?php

				if ( isset( $image_url_lists['large'] ) )
				{
					for( $p=0; $p<sizeof( $image_url_lists['large'] ); $p++ )
					{
						//Inventory Presser versions 8.1.0 and above provide the 'urls'
						if( isset( $image_url_lists['urls'][$p] ) )
						{
							printf(
								'<li><a href="%s">%s</a></li>',
								$image_url_lists['urls'][$p],
								$image_url_lists['large'][$p]
							);
						}
						else
						{
							 printf(
								'<li>%s</li>',
								$image_url_lists['large'][$p]
							);
						}
					}
				}
			?></ul>
		</div><?php

		if ( $atts['include_carousel'] && isset( $image_url_lists['thumb'] ) && count($image_url_lists['thumb']) > 1)
		{
			?><div id="carousel" class="flexslider no-preview">
				<ul class="slides"><?php

					foreach( $image_url_lists['thumb'] as $image )
					{
						printf( '<li>%s</li>', $image );
					}

				?></ul>
			</div><?php			
		}
	
		return ob_get_clean();
	}
}