Making all function pluggable

inc/customizer.php

@@ -10,14 +10,17 @@
  *
  * @param WP_Customize_Manager $wp_customize Theme Customizer object.
  */
+if ( ! function_exists ( 'understrap_customize_register' ) ) {
     function understrap_customize_register( $wp_customize ) {
     	$wp_customize->get_setting( 'blogname' )->transport         = 'postMessage';
     	$wp_customize->get_setting( 'blogdescription' )->transport  = 'postMessage';
     	$wp_customize->get_setting( 'header_textcolor' )->transport = 'postMessage';
 
     }
+}
 add_action( 'customize_register', 'understrap_customize_register' );
 
+if ( ! function_exists ( 'understrap_theme_customize_register' ) ) {
     function understrap_theme_customize_register( $wp_customize ) {
 
         $wp_customize->add_section( 'understrap_theme_slider_options', array(
@@ -65,6 +68,7 @@ function understrap_theme_customize_register( $wp_customize ) {
         ) );
 
     }
+}
 add_action( 'customize_register', 'understrap_theme_customize_register' );
 
 
@@ -72,7 +76,9 @@ add_action( 'customize_register', 'understrap_theme_customize_register' );
 /**
  * Binds JS handlers to make Theme Customizer preview reload changes asynchronously.
  */
+if ( ! function_exists ( 'understrap_customize_preview_js' ) ) {
     function understrap_customize_preview_js() {
     	wp_enqueue_script( 'understrap_customizer', get_template_directory_uri() . '/js/customizer.js', array( 'customize-preview' ), '20130508', true );
     }
+}
 add_action( 'customize_preview_init', 'understrap_customize_preview_js' );

inc/enqueue.php

@@ -5,6 +5,7 @@
  * @package understrap
  */
 
+if ( ! function_exists ( 'understrap_scripts' ) ) {
 	function understrap_scripts() {
 		wp_enqueue_style( 'understrap-styles', get_stylesheet_directory_uri() . '/css/theme.min.css', array(), '0.4.9' );
 		wp_enqueue_script( 'jquery' );
@@ -29,6 +30,7 @@ function understrap_scripts() {
 		}
 		// menu - vertical page association end
 	}
+}
 
 add_action( 'wp_enqueue_scripts', 'understrap_scripts' );
 
@@ -39,6 +41,7 @@ add_action( 'wp_enqueue_scripts', 'understrap_scripts' );
 if ( is_active_sidebar( 'hero' ) ):
 	add_action( "wp_enqueue_scripts", "understrap_slider" );
 
+	if ( ! function_exists ( 'understrap_slider' ) ) {
 		function understrap_slider() {
 			if ( is_front_page() ) {
 				$data = array(
@@ -50,5 +53,6 @@ if ( is_active_sidebar( 'hero' ) ):
 				wp_localize_script( "understrap-slider-script", "understrap_slider_variables", $data );
 			}
 		}
+	}
 endif;
 

inc/extras.php

@@ -12,6 +12,8 @@
  * @param array $classes Classes for the body element.
  * @return array
  */
+
+if ( ! function_exists ( 'understrap_body_classes' ) ) {
 	function understrap_body_classes( $classes ) {
 		// Adds a class of group-blog to blogs with more than 1 published author.
 		if ( is_multi_author() ) {
@@ -23,11 +25,14 @@ function understrap_body_classes( $classes ) {
 		}
 		return $classes;
 	}
+}
 add_filter( 'body_class', 'understrap_body_classes' );
 
 // Removes tag class from the body_class array to avoid Bootstrap markup styling issues.
 
 add_filter( 'body_class', 'adjust_body_class' );
+
+if ( ! function_exists ( 'adjust_body_class' ) ) {
 	function adjust_body_class( $classes ) {
 
 	    foreach ( $classes as $key => $value ) {
@@ -37,12 +42,16 @@ function adjust_body_class( $classes ) {
 	    return $classes;
 
 	}
+}
 
 // Filter custom logo with correct classes
 add_filter('get_custom_logo','change_logo_class');
+
+if ( ! function_exists ( 'change_logo_class' ) ) {
 	function change_logo_class($html)
 	{
 		$html = str_replace('class="custom-logo"', 'class="img-responsive"', $html);
 		$html = str_replace('class="custom-logo-link"', 'class="navbar-brand custom-logo-link"', $html);
 		return $html;
 	}
+}

inc/jetpack.php

@@ -12,6 +12,7 @@
  * See: https://jetpack.com/support/infinite-scroll/
  * See: https://jetpack.com/support/responsive-videos/
  */
+if ( ! function_exists ( 'understrap_jetpack_setup' ) ) {
 	function understrap_jetpack_setup() {
 		// Add theme support for Infinite Scroll.
 		add_theme_support( 'infinite-scroll', array(
@@ -22,10 +23,12 @@ function understrap_jetpack_setup() {
 		// Add theme support for Responsive Videos.
 		add_theme_support( 'jetpack-responsive-videos' );
 	}
+}
 add_action( 'after_setup_theme', 'understrap_jetpack_setup' );
 /**
  * Custom render function for Infinite Scroll.
  */
+if ( ! function_exists ( 'understrap_infinite_scroll_render' ) ) {
 	function understrap_infinite_scroll_render() {
 		while ( have_posts() ) {
 			the_post();
@@ -36,4 +39,5 @@ function understrap_infinite_scroll_render() {
 			endif;
 		}
 	}
+}
 

inc/setup.php

@@ -89,15 +89,18 @@ add_action( 'after_setup_theme', 'understrap_setup' );
 }
 add_filter( 'excerpt_more', 'new_excerpt_more' );*/
 /* Removes the ... from the excerpt read more link */
+if ( ! function_exists ( 'custom_excerpt_more' ) ) {
 	function custom_excerpt_more( $more ) {
 		return '';
 	}
+}
 add_filter( 'excerpt_more', 'custom_excerpt_more' );
 
 /* Adds a custom read more link to all excerpts, manually or automatically generated */
-
+if ( ! function_exists ( 'all_excerpts_get_more_link' ) ) {
 	function all_excerpts_get_more_link($post_excerpt) {
 
 	    return $post_excerpt . ' [...]<p><a class="btn btn-secondary understrap-read-more-link" href="'. get_permalink( get_the_ID() ) . '">' . __('Read More...', 'understrap')  . '</a></p>';
 	}
+}
 add_filter('wp_trim_excerpt', 'all_excerpts_get_more_link');

inc/widgets.php

@@ -5,6 +5,7 @@
  *
  * @package understrap
  */
+if ( ! function_exists ( 'understrap_widgets_init' ) ) {
     function understrap_widgets_init() {
     	register_sidebar( array(
     		'name'          => __( 'Sidebar', 'understrap' ),
@@ -47,4 +48,5 @@ function understrap_widgets_init() {
         ) );
 
     }
+}
 add_action( 'widgets_init', 'understrap_widgets_init' );

inc/woocommerce.php

@@ -7,6 +7,8 @@
  */
 
 add_action( 'after_setup_theme', 'woocommerce_support' );
+if ( ! function_exists ( 'woocommerce_support' ) ) {
 	function woocommerce_support() {
 	    add_theme_support( 'woocommerce' );
 	}
+}

inc/wpcom.php

@@ -12,6 +12,7 @@
  *
  * @global array $themecolors
  */
+if ( ! function_exists ( 'understrap_wpcom_setup' ) ) {
 	function understrap_wpcom_setup() {
 		global $themecolors;
 
@@ -26,4 +27,5 @@ function understrap_wpcom_setup() {
 			);
 		}
 	}
+}
 add_action( 'after_setup_theme', 'understrap_wpcom_setup' );