### FooGallery Extension Initialization

Source: https://github.com/wp-plugins/foogallery/blob/master/includes/admin/boilerplates/template/foogallery-EXTSLUG-extension.php.txt

Defines constants and includes the main initialization file for the extension.

```php
if ( !class_exists( '{package}' ) ) {

	define('{constant}_URL', plugin_dir_url( __FILE__ ));
	define('{constant}_VERSION', '1.0.0');

	require_once( 'foogallery-{slug}-init.php' );
```

--------------------------------

### Initialize FooGallery Extension

Source: https://github.com/wp-plugins/foogallery/blob/master/includes/admin/boilerplates/lightbox/foogallery-EXTSLUG-init.php.txt

Use this class to add your extension to the FooGallery available extensions list during development. This file is not needed once the extension is officially supported.

```php
<?php
//This init class is used to add the extension to the extensions list while you are developing them.
//When the extension is added to the supported list of extensions, this file is no longer needed.

if ( !class_exists( '{package}_Init' ) ) {
	class {package}_Init {

		function __construct() {
			add_filter( 'foogallery_available_extensions', array( $this, 'add_to_extensions_list' ) );
		}

		function add_to_extensions_list( $extensions ) {
			$extensions[] = array(
				'slug'=> '{slug}',
				'class'=> '{package}',
				'title'=> __('{name}', '{plugin_slug}'),
				'file'=> 'foogallery-{slug}-extension.php',
				'description'=> __('{desc}', '{plugin_slug}'),
				'author'=> '{author}',
				'author_url'=> '{author_link}',
				'thumbnail'=> {constant}_URL . '/assets/extension_bg.png',
				'tags'=> array( __('{type}', 'foogallery') ),	//use foogallery translations
				'categories'=> array( __('Build Your Own', 'foogallery') ), //use foogallery translations
				'source'=> 'generated'
			);

			return $extensions;
		}
	}

	new {package}_Init();
}
```

--------------------------------

### FooGallery Extension Class Structure

Source: https://github.com/wp-plugins/foogallery/blob/master/includes/admin/boilerplates/template/foogallery-EXTSLUG-extension.php.txt

Main class for the FooGallery extension, including the constructor and methods for template registration and dependency enqueuing.

```php
class {package} {
		/**
		 * Wire up everything we need to run the extension
		 */
		function __construct() {
			add_filter( 'foogallery_gallery_templates', array( $this, 'add_template' ) );
			add_filter( 'foogallery_gallery_templates_files', array( $this, 'register_myself' ) );
			add_filter( 'foogallery_located_template-{slug}', array( $this, 'enqueue_dependencies' ) );
		}

		/**
		 * Register myself so that all associated JS and CSS files can be found and automatically included
		 * @param $extensions
		 *
		 * @return array
		 */
		function register_myself( $extensions ) {
			$extensions[] = __FILE__;
			return $extensions;
		}

		/**
		 * Enqueue any script or stylesheet file dependencies that your gallery template relies on
		 */
		function enqueue_dependencies() {
			//$js = {constant}_URL . 'js/jquery.{slug}.js';
			//wp_enqueue_script( '{slug}', $js, array('jquery'), {constant}_VERSION );

			//$css = {constant}_URL . 'css/{slug}.css';
			//wp_enqueue_style( '{slug}', $css, array(), {constant}_VERSION );
		}

		/**
		 * Add our gallery template to the list of templates available for every gallery
		 * @param $gallery_templates
		 *
		 * @return array
		 */
		function add_template( $gallery_templates ) {

			$gallery_templates[] = array(
				'slug'        => '{slug}',
				'name'        => __( '{name}', '{plugin_slug}'),
				'preview_css' => {constant}_URL . 'css/gallery-{slug}.css',
				'admin_js'    => {constant}_URL . 'js/admin-gallery-{slug}.js',
				'fields'      => array(
					array(
						'id'      => 'thumbnail_size',
						'title'   => __('Thumbnail Size', '{plugin_slug}'),
						'desc'    => __('Choose the size of your thumbs.', '{plugin_slug}'),
						'type'    => 'thumb_size',
						'default' => array(
							'width' => get_option( 'thumbnail_size_w' ),
							'height' => get_option( 'thumbnail_size_h' ),
							'crop' => true
						)
					),
					array(
						'id'      => 'thumbnail_link',
						'title'   => __('Thumbnail Link', '{plugin_slug}'),
						'default' => 'image' ,
						'type'    => 'thumb_link',
						'spacer'  => '<span class="spacer"></span>',
						'desc'    => __('You can choose to either link each thumbnail to the full size image or to the image\'s attachment page.', '{plugin_slug}')
					),
					array(
						'id'      => 'lightbox',
						'title'   => __('Lightbox', '{plugin_slug}'),
						'desc'    => __('Choose which lightbox you want to use in the gallery.', '{plugin_slug}'),
						'type'    => 'lightbox'
					),
					array(
						'id'      => 'alignment',
						'title'   => __('Gallery Alignment', '{plugin_slug}'),
						'desc'    => __('The horizontal alignment of the thumbnails inside the gallery.', '{plugin_slug}'),
						'default' => 'alignment-center',
						'type'    => 'select',
						'choices' => array(
							'alignment-left' => __( 'Left', '{plugin_slug}' ),
							'alignment-center' => __( 'Center', '{plugin_slug}' ),
							'alignment-right' => __( 'Right', '{plugin_slug}' )
						)
					)
					//available field types available : html, checkbox, select, radio, textarea, text, checkboxlist, icon
					//an example of a icon field used in the default gallery template
					//array(
					//	'id'      => 'border-style',
					//	'title'   => __('Border Style', '{plugin_slug}'),
					//	'desc'    => __('The border style for each thumbnail in the gallery.', '{plugin_slug}'),
					//	'type'    => 'icon',
					//	'default' => 'border-style-square-white',
					//	'choices' => array(
					//		'border-style-square-white' => array('label' => 'Square white border with shadow', 'img' => FOOGALLERY_DEFAULT_TEMPLATES_EXTENSION_URL . 'assets/border-style-icon-square-white.png'),
					//		'border-style-circle-white' => array('label' => 'Circular white border with shadow', 'img' => FOOGALLERY_DEFAULT_TEMPLATES_EXTENSION_URL . 'assets/border-style-icon-circle-white.png'),
					//		'border-style-square-black' => array('label' => 'Square Black', 'img' => FOOGALLERY_DEFAULT_TEMPLATES_EXTENSION_URL . 'assets/border-style-icon-square-black.png'),
					//		'border-style-circle-black' => array('label' => 'Circular Black', 'img' => FOOGALLERY_DEFAULT_TEMPLATES_EXTENSION_URL . 'assets/border-style-icon-circle-black.png'),
```

--------------------------------

### FooGallery Template Rendering

Source: https://github.com/wp-plugins/foogallery/blob/master/includes/admin/boilerplates/template/gallery-EXTSLUG.php.txt

This PHP code defines the structure for displaying a FooGallery on the frontend. It retrieves gallery settings and iterates through attachments to generate HTML for each image, including lightbox integration.

```php
<?php
/**
 * FooGallery {name} gallery template
 * This is the template that is run when a FooGallery shortcode is rendered to the frontend
 */
//the current FooGallery that is currently being rendered to the frontend
global $current_foogallery;
//the current shortcode args
global $current_foogallery_arguments;
//get our thumbnail sizing args
$args = foogallery_gallery_template_setting( 'thumbnail_size', 'thumbnail' );
//add the link setting to the args
$args['link'] = foogallery_gallery_template_setting( 'thumbnail_link', 'image' );
//get which lightbox we want to use
$lightbox = foogallery_gallery_template_setting( 'lightbox', 'unknown' );
?>
<ul id="foogallery-gallery-<?php echo $current_foogallery->ID; ?>" class="foogallery-container foogallery-{slug} foogallery-lightbox-<?php echo esc_attr($lightbox); ?>">
	<?php foreach ( $current_foogallery->attachments() as $attachment ) {
		echo '<li>' . $attachment->html( $args ) . '</li>';
	} ?>
</ul>
```

--------------------------------

### FooGallery Lightbox Extension Boilerplate

Source: https://github.com/wp-plugins/foogallery/blob/master/includes/admin/boilerplates/lightbox/foogallery-EXTSLUG-extension.php.txt

This is the main class structure for a FooGallery lightbox extension. It defines constants, includes initialization files, and sets up hooks for integrating a new lightbox.

```php
<?php
/**
 * FooGallery {name} Extension
 *
 * {desc}
 *
 * @package   {package}
 * @author    {author}
 * @license   GPL-2.0+ 
 * @link      {author_link}
 * @copyright 2014 {author}
 *
 * @wordpress-plugin
 * Plugin Name: FooGallery - {name}
 * Description: {desc}
 * Version:     1.0.0
 * Author:      {author}
 * Author URI:  {author_link}
 * License:     GPL-2.0+ 
 * License URI: http://www.gnu.org/licenses/gpl-2.0.txt
 */

if ( !class_exists( '{package}' ) ) {

	define('{constant}_URL', plugin_dir_url( __FILE__ ));
	define('{constant}_VERSION', '1.0.0');

	require_once( 'foogallery-{slug}-init.php' );

	class {package} {

		/**
		 * Wire up everything we need to run the extension
		 */
		function __construct() {
			add_filter( 'foogallery_gallery_template_field_lightboxes', array($this, 'add_lightbox') );
			add_action( 'foogallery_template_lightbox-{slug}', array($this, 'add_required_files') );
			add_filter( 'foogallery_attachment_html_link_attributes', array($this, 'add_html_attributes') );
		}

		/**
		 * Add our lightbox to the lightbox dropdown on the gallery edit page
		 */
		function add_lightbox($lightboxes) {
			$lightboxes['{slug}'] = __( '{name}', '{plugin_slug}' );
			return $lightboxes;
		}

		/**
		 * Add any JS or CSS required by the extension
		 */
		function add_required_files() {
			//enqueue the lightbox script
			wp_enqueue_script( '{slug}', {constant}_URL . 'js/lightbox-{slug}.js', array('jquery'), {constant}_VERSION );
			//optionl : enqueu the init code to hook up your lightbox
			//wp_enqueue_script( '{slug}_init', {constant}_URL . 'js/lightbox-{slug}-init.js', array('{slug}'), {constant}_VERSION );
			//enqueue the lightbox stylesheets
			wp_enqueue_style( '{slug}', {constant}_URL . 'css/lightbox-{slug}.css', array(), {constant}_VERSION );
		}

		/**
		 * Optional. Alter the anchor attributes so that the lightbox extension can work
		 */
		function add_html_attributes($attr) {
			global $current_foogallery;

			$lightbox = foogallery_gallery_template_setting( 'lightbox' );

			//if the gallery is using our lightbox, then alter the HTML so the lightbox script can find it
			if ( '{slug}' == $lightbox ) {
				//add custom attributes to the anchor
				//$attr['rel'] = "{slug}[foogallery-{$current_foogallery->ID}]";
			}

			return $attr;
		}
	}
}

```

--------------------------------

### FooGallery Extension Plugin Header

Source: https://github.com/wp-plugins/foogallery/blob/master/includes/admin/boilerplates/template/foogallery-EXTSLUG-extension.php.txt

Standard WordPress plugin header information for a FooGallery extension.

```php
<?php
/**
 * FooGallery {name} Extension
 *
 * {desc}
 *
 * @package   {package}
 * @author    {author}
 * @license   GPL-2.0+ 
 * @link      {author_link}
 * @copyright 2014 {author}
 *
 * @wordpress-plugin
 * Plugin Name: FooGallery - {name}
 * Description: {desc}
 * Version:     1.0.0
 * Author:      {author}
 * Author URI:  {author_link}
 * License:     GPL-2.0+
 * License URI: http://www.gnu.org/licenses/gpl-2.0.txt
 */
```

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