<?php

/**

 * Class SlideshowPluginWidget allows showing one of your slideshows in your widget area.

 *

 * @author: Stefan Boonstra

 * @version: 04-10-12

 */

class SlideshowPluginWidget extends WP_Widget {

	/** Variables */

	static $widgetName = 'Slideshow Widget';

	/**

	 * Initializes the widget

	 */

	function SlideshowPluginWidget(){

		// Settings

		$options = array(

			'classname' => 'SlideshowWidget',

			'description' => __('Enables you to show your slideshows in the widget area of your website.', 'slideshow-plugin')

		);

		// Create the widget.

		$this->WP_Widget(

			'slideshowWidget',

			__('Slideshow Widget', 'slideshow-plugin'),

			$options

		);

	}

	/**

	 * The widget as shown to the user.

	 *

	 * @param mixed array $args

	 * @param mixed array $instance

	 */

	function widget($args, $instance){

		// Get slideshowId

		$slideshowId = '';

		if(isset($instance['slideshowId']))

			$slideshowId = $instance['slideshowId'];

		// Get title

		$title = '';

		if(isset($instance['title']))

			$title = $instance['title'];

		// Prepare slideshow for output to website.

		$output = SlideshowPlugin::prepare($slideshowId);

		$beforeWidget = $afterWidget = $beforeTitle = $afterTitle = '';

		if(isset($args['before_widget']))

			$beforeWidget = $args['before_widget'];

		if(isset($args['after_widget']))

			$afterWidget = $args['after_widget'];

		if(isset($args['before_title']))

			$beforeTitle = $args['before_title'];

		if(isset($args['after_title']))

			$afterTitle = $args['after_title'];

		// Output widget

		echo $beforeWidget .

			$beforeTitle . $title . $afterTitle .

			$output .

		$afterWidget;

	}

	/**

	 * The form shown on the admins widget page. Here settings can be changed.

	 *

	 * @param mixed array $instance

	 * @return string

	 */

	function form($instance){

		// Defaults

		$defaults = array(

			'title' => __(self::$widgetName, 'slideshow-plugin'),

			'slideshowId' => -1

		);

		// Merge database settings with defaults

		$instance = wp_parse_args((array) $instance, $defaults);

		// Get slideshows

		$slideshows = get_posts(array(

			'numberposts' => -1,

			'offset' => 0,

			'post_type' => SlideshowPluginPostType::$postType

		));

		// Include form

		include(SlideshowPluginMain::getPluginPath() . '/views/' . __CLASS__ . '/form.php');

	}

	/**

	 * Updates widget's settings.

	 *

	 * @param mixed array $newInstance

	 * @param mixed array $instance

	 * @return mixed array $instance

	 */

	function update($newInstance, $instance){

		// Update title

		if(isset($newInstance['title']))

			$instance['title'] = $newInstance['title'];

		// Update slideshowId

		if(isset($newInstance['slideshowId']) && !empty($newInstance['slideshowId']))

			$instance['slideshowId'] = $newInstance['slideshowId'];

		// Save

		return $instance;

	}

	/**

	 * Registers this widget (should be called upon widget_init action hook)

	 */

	static function registerWidget(){

		register_widget(__CLASS__);

	}

}