Include external JavaScript into Roots

1<?php
2/**
3 * Enqueue scripts and stylesheets
4 *
5 * Enqueue stylesheets in the following order:
6 * 1. /theme/assets/css/bootstrap.css
7 * 2. /theme/assets/css/bootstrap-responsive.css
8 * 3. /theme/assets/css/app.css
9 * 4. /child-theme/style.css (if a child theme is activated)
10 *
11 * Enqueue scripts in the following order:
12 * 1. jquery-1.9.1.min.js via Google CDN
13 * 2. /theme/assets/js/vendor/modernizr-2.6.2.min.js
14 * 3. /theme/assets/js/plugins.js (in footer)
15 * 4. /theme/assets/js/main.js    (in footer)
16 */
17function roots_scripts() {
18  wp_enqueue_style('roots_bootstrap', get_template_directory_uri() . '/assets/css/bootstrap.css', false, null);
19  wp_enqueue_style('roots_bootstrap_responsive', get_template_directory_uri() . '/assets/css/bootstrap-responsive.css', array('roots_bootstrap'), null);
20  wp_enqueue_style('roots_app', get_template_directory_uri() . '/assets/css/app.css', false, null);
21
22  // Load style.css from child theme
23  if (is_child_theme()) {
24    wp_enqueue_style('roots_child', get_stylesheet_uri(), false, null);
25  }
26
27  // jQuery is loaded using the same method from HTML5 Boilerplate:
28  // Grab Google CDN's latest jQuery with a protocol relative URL; fallback to local if offline
29  // It's kept in the header instead of footer to avoid conflicts with plugins.
30  if (!is_admin() && current_theme_supports('jquery-cdn')) {
31    wp_deregister_script('jquery');
32    wp_register_script('jquery', '//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js', false, null, false);
33    add_filter('script_loader_src', 'roots_jquery_local_fallback', 10, 2);
34  }
35
36  if (is_single() && comments_open() && get_option('thread_comments')) {
37    wp_enqueue_script('comment-reply');
38  }
39
40  wp_register_script('modernizr', get_template_directory_uri() . '/assets/js/vendor/modernizr-2.6.2.min.js', false, null, false);
41  wp_register_script('roots_plugins', get_template_directory_uri() . '/assets/js/plugins.js', false, null, true);
42  wp_register_script('roots_main', get_template_directory_uri() . '/assets/js/main.js', false, null, true);
43  //register external scripts
44  wp_register_script('backstretch', '/assets/js/vendor/jquery.backstretch.min.js', false, null, false);
45
46  wp_enqueue_script('jquery');
47  wp_enqueue_script('modernizr');
48  wp_enqueue_script('roots_plugins');
49  wp_enqueue_script('roots_main');
50  wp_enqueue_script('backstretch');
51}
52add_action('wp_enqueue_scripts', 'roots_scripts', 100);
53
54// http://wordpress.stackexchange.com/a/12450
55function roots_jquery_local_fallback($src, $handle) {
56  static $add_jquery_fallback = false;
57
58  if ($add_jquery_fallback) {
59    echo '<script>window.jQuery || document.write(\'<script src="' . get_template_directory_uri() . '/assets/js/vendor/jquery-1.9.1.min.js"><\/script>\')</script>' . "\n";
60    $add_jquery_fallback = false;
61  }
62
63  if ($handle === 'jquery') {
64    $add_jquery_fallback = true;
65  }
66
67  return $src;
68}
69
70function roots_google_analytics() { ?>
71<script>
72  var _gaq=[['_setAccount','<?php echo GOOGLE_ANALYTICS_ID; ?>'],['_trackPageview']];
73  (function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];
74    g.src=('https:'==location.protocol?'//ssl':'//www')+'.google-analytics.com/ga.js';
75    s.parentNode.insertBefore(g,s)}(document,'script'));
76</script>
77<?php }
78if (GOOGLE_ANALYTICS_ID) {
79  add_action('wp_footer', 'roots_google_analytics', 20);
80}
81
82// damn