cleaned up functions and removed extra files

_notes/dwsync.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <dwsync>
-<file name="grandchild-functions.php" server="development.wordpress.uconn.edu/edu.uconn.wordpress.development/public_html/wp-content/" local="131045124834778163" remote="131045124820000000" Dst="2" />
+<file name="grandchild-functions.php" server="development.wordpress.uconn.edu/edu.uconn.wordpress.development/public_html/wp-content/" local="131050355436273641" remote="131050355430000000" Dst="2" />
 <file name="grandchild-styles.css" server="development.wordpress.uconn.edu/edu.uconn.wordpress.development/public_html/wp-content/" local="131045143970231517" remote="131045143960000000" Dst="2" />
+<file name="template-class.php" server="development.wordpress.uconn.edu/edu.uconn.wordpress.development/public_html/wp-content/" local="131045123140000000" remote="131045123140000000" Dst="2" />
 </dwsync>

grandchild-functions.php

@@ -4,44 +4,13 @@
 Description: Sample grandchild theme built as a plugin.
 Author: Web Dev
 Author URI: http://www.your-website.com
-Version: 1.0
+Version: 1.0 
 */
-
-
-require_once( plugin_dir_path( __FILE__ ) . 'template-class.php' );
-add_action( 'plugins_loaded', array( 'Page_Template_Plugin', 'get_instance' ) );
 
 // Adds our new file with styles
 function grandchild_add_scripts_styles() {
-	wp_register_script( 'grandchild-script', plugins_url( 'grandchild-scripts.js', __FILE__ ), array( 'jquery' ), '1.0' );
-	wp_enqueue_script( 'grandchild-script' );
 
 	wp_register_style( 'grandchild-style', plugins_url( 'grandchild-styles.css', __FILE__ ), array(), '1.0' );
 	wp_enqueue_style( 'grandchild-style' );
 }
 add_action( 'wp_enqueue_scripts', 'grandchild_add_scripts_styles', 99999999 );
-
-// Search for templates in plugin 'templates' dir, and load if exists
-function grandchild_template_include( $template ) {
-	if ( file_exists( untrailingslashit( plugin_dir_path( __FILE__ ) ) . '/templates/' . basename( $template ) ) )
-		$template = untrailingslashit( plugin_dir_path( __FILE__ ) ) . '/templates/' . basename( $template );
-
-	return $template;
-}
-add_filter( 'template_include', 'grandchild_template_include', 11 );
-
-// We are hooking to the 'load_custom_header' filter 
-// and return a value of 'true' meaning that we want to 
-// load a custom header
-/*add_filter( 'load_custom_header', '__return_true', 99 );
-
-add_filter( 'get_custom_header', function( $header ) {
-    return plugin_dir_path( __FILE__ ).'templates/header.php';
-}, 99 );
-
-add_filter( 'load_custom_footer', '__return_true', 99 );
-
-add_filter( 'get_custom_footer', function( $footer ) {
-    return plugin_dir_path( __FILE__ ).'templates/footer.php';
-}, 99 );
-*/

template-class.php

@@ -0,0 +1,221 @@
+<?php
+
+/**
+ * This plugin allows you to include templates with your plugin so that they can
+ * be added with any theme.
+ *
+ * @package Page Template Example
+ * @version 1.0.0
+ * @since 	0.1.0
+ */
+class Page_Template_Plugin {
+
+    /**
+     * Plugin version, used for cache-busting of style and script file references.
+     *
+     * @since   1.0.0
+     *
+     * @var     string
+     */
+    const VERSION = '1.0.0';
+
+    /**
+     * Unique identifier for the plugin.
+     *
+     * The variable name is used as the text domain when internationalizing strings
+     * of text.
+     *
+     * @since    1.0.0
+     *
+     * @var      string
+     */
+    protected $plugin_slug;
+
+	/**
+	 * A reference to an instance of this class.
+	 *
+	 * @since 0.1.0
+	 *
+	 * @var   Page_Template_Plugin
+	 */
+	private static $instance;
+
+	/**
+	 * The array of templates that this plugin tracks.
+	 *
+	 * @var      array
+	 */
+	protected $templates;
+
+
+	/**
+	 * Returns an instance of this class. An implementation of the singleton design pattern.
+	 *
+	 * @return   Page_Templae_Example    A reference to an instance of this class.
+	 * @since    1.0.0
+	 */
+	public static function get_instance() {
+
+		if( null == self::$instance ) {
+			self::$instance = new Page_Template_Plugin();
+		} // end if
+
+		return self::$instance;
+
+	} // end getInstance
+
+	/**
+	 * Initializes the plugin by setting localization, filters, and administration functions.
+	 *
+	 * @version		1.0.0
+     * @since 		1.0.0
+	 */
+	private function __construct() {
+
+		$this->templates = array();
+		$this->plugin_locale = 'pte';
+
+		// Grab the translations for the plugin
+		add_action( 'init', array( $this, 'load_plugin_textdomain' ) );
+
+		// Add a filter to the page attributes metabox to inject our template into the page template cache.
+		add_filter('page_attributes_dropdown_pages_args', array( $this, 'register_project_templates' ) );
+
+		// Add a filter to the save post in order to inject out template into the page cache
+		add_filter('wp_insert_post_data', array( $this, 'register_project_templates' ) );
+
+		// Add a filter to the template include in order to determine if the page has our template assigned and return it's path
+		add_filter('template_include', array( $this, 'view_project_template') );
+
+		// Register hooks that are fired when the plugin is activated, deactivated, and uninstalled, respectively.
+		register_deactivation_hook( __FILE__, array( $this, 'deactivate' ) );
+
+		// Add your templates to this array.
+		$this->templates = array(
+			'page-sample.php'     => __( 'Sample', $this->plugin_slug ),
+			//'page-sample2.php'     => __( 'Sample2', $this->plugin_slug ),
+			//'page-sample3.php'     => __( 'Sample3', $this->plugin_slug ),
+		);
+
+		// adding support for theme templates to be merged and shown in dropdown
+		$templates = wp_get_theme()->get_page_templates();
+		$templates = array_merge( $templates, $this->templates );
+
+	} // end constructor
+
+    /**
+     * Load the plugin text domain for translation.
+     *
+     * @since    1.0.0
+     */
+    public function load_plugin_textdomain() {
+
+	    $domain = $this->plugin_slug;
+	    $locale = apply_filters( 'plugin_locale', get_locale(), $domain );
+
+	    load_textdomain( $domain, trailingslashit( WP_LANG_DIR ) . $domain . '/' . $domain . '-' . $locale . '.mo' );
+	    load_plugin_textdomain( $domain, FALSE, basename( dirname( __FILE__ ) ) . '/languages/' );
+
+    } // end load_plugin_textdomain
+
+	/**
+	 * Adds our template to the pages cache in order to trick WordPress
+	 * into thinking the template file exists where it doens't really exist.
+	 *
+	 * @param   array    $atts    The attributes for the page attributes dropdown
+	 * @return  array    $atts    The attributes for the page attributes dropdown
+	 * @verison	1.0.0
+	 * @since	1.0.0
+	 */
+	public function register_project_templates( $atts ) {
+
+		// Create the key used for the themes cache
+		$cache_key = 'page_templates-' . md5( get_theme_root() . '/' . get_stylesheet() );
+
+		// Retrieve the cache list. If it doesn't exist, or it's empty prepare an array
+		$templates = wp_cache_get( $cache_key, 'themes' );
+		if ( empty( $templates ) ) {
+			$templates = array();
+		} // end if
+
+		// Since we've updated the cache, we need to delete the old cache
+		wp_cache_delete( $cache_key , 'themes');
+
+		// Now add our template to the list of templates by merging our templates
+		// with the existing templates array from the cache.
+		$templates = array_merge( $templates, $this->templates );
+
+		// Add the modified cache to allow WordPress to pick it up for listing
+		// available templates
+		wp_cache_add( $cache_key, $templates, 'themes', 1800 );
+
+		return $atts;
+
+	} // end register_project_templates
+
+	/**
+	 * Checks if the template is assigned to the page
+	 *
+	 * @version	1.0.0
+	 * @since	1.0.0
+	 */
+	public function view_project_template( $template ) {
+
+		global $post;
+
+		// If no posts found, return to
+		// avoid "Trying to get property of non-object" error
+		if ( !isset( $post ) ) return $template;
+
+		if ( ! isset( $this->templates[ get_post_meta( $post->ID, '_wp_page_template', true ) ] ) ) {
+			return $template;
+		} // end if
+
+		$file = plugin_dir_path( __FILE__ ) . 'templates/' . get_post_meta( $post->ID, '_wp_page_template', true );
+
+		// Just to be safe, we check if the file exist first
+		if( file_exists( $file ) ) {
+			return $file;
+		} // end if
+
+		return $template;
+
+	} // end view_project_template
+
+	/*--------------------------------------------*
+	 * deactivate the plugin
+	*---------------------------------------------*/
+	static function deactivate( $network_wide ) {
+		foreach($this as $value) {
+			page-template-example::delete_template( $value );
+		}
+
+	} // end deactivate
+
+	/*--------------------------------------------*
+	 * Delete Templates from Theme
+	*---------------------------------------------*/
+	public function delete_template( $filename ){				
+		$theme_path = get_template_directory();
+		$template_path = $theme_path . '/' . $filename;  
+		if( file_exists( $template_path ) ) {
+			unlink( $template_path );
+		}
+
+		// we should probably delete the old cache
+		wp_cache_delete( $cache_key , 'themes');
+	}
+
+	/**
+	 * Retrieves and returns the slug of this plugin. This function should be called on an instance
+	 * of the plugin outside of this class.
+	 *
+	 * @return  string    The plugin's slug used in the locale.
+	 * @version	1.0.0
+	 * @since	1.0.0
+	 */
+	public function get_locale() {
+		return $this->plugin_slug;
+	} // end get_locale
+
+} // end class

templates/_notes/dwsync.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<dwsync>
+<file name="page-sample.php" server="development.wordpress.uconn.edu/edu.uconn.wordpress.development/public_html/wp-content/" local="131045123140000000" remote="131045123140000000" Dst="2" />
+</dwsync>

templates/page-sample.php

@@ -0,0 +1,24 @@
+<?php
+/*
+*	Template Name: Sample
+*	Sample Page Template
+*/
+get_header(); ?>
+<div id="page-az">
+	<?php include('../../../themes/cornerstone/inc/sidebar-check.php')?>
+	<?php while ( have_posts() ) : the_post(); ?>
+		<?php include('../../../themes/cornerstone/inc/submenu-check.php')?>
+			<div class="row">
+				<div class="col-sm-<?php echo (is_active_sidebar( $sidebar )?9:12); ?>">
+					<div id="primary" class="content-area">
+						<main id="main" class="site-main" role="main">
+							Sample content
+						</main>
+					</div>
+				</div>
+				<?php include('../../../themes/cornerstone/inc/sidebar-if-active.php')?>
+			</div>
+		<?php include('../../../themes/cornerstone/inc/submenu-closing-tags.php')?>
+	<?php endwhile; // end of the loop. ?>
+</div>
+<?php get_footer(); ?>