/**
* Adds contextual filter hooks to the theme. This allows users to easily filter context-based content
* without having to know how to use WordPress conditional tags. The theme handles the logic.
*
* An example of a basic hook would be 'bon_entry_meta'. The apply_atomic() function extends
* that to give extra hooks such as 'bon_singular_entry_meta', 'bon_singular-post_entry_meta',
* and 'bon_singular-post-ID_entry_meta'.
*
* @since 1.0
* @access public
* @uses bon_get_prefix() Gets the theme prefix.
* @uses bon_get_context() Gets the context of the current page.
* @param string $tag Usually the location of the hook but defines what the base hook is.
* @param mixed $value The value on which the filters hooked to $tag are applied on.
* @param mixed $var,... Additional variables passed to the functions hooked to $tag.
* @return mixed $value The value after it has been filtered.
*/
function apply_atomic($tag = '', $value = '')
{
if (empty($tag)) {
return false;
}
/* Get theme prefix. */
$pre = bon_get_prefix();
/* Get the args passed into the function and remove $tag. */
$args = func_get_args();
array_splice($args, 0, 1);
/* Apply filters on the basic hook. */
$value = $args[0] = apply_filters_ref_array("{$pre}{$tag}", $args);
/* Loop through context array and apply filters on a contextual scale. */
foreach ((array) bon_get_context() as $context) {
$value = $args[0] = apply_filters_ref_array("{$pre}{$context}_{$tag}", $args);
}
/* Return the final value once all filters have been applied. */
return $value;
}
function bon_body_class_filter($classes, $class)
{
/* WordPress class for uses when WordPress isn't always the only system on the site. */
$classes = array('wordpress');
/* Text direction. */
$classes[] = is_rtl() ? 'rtl' : 'ltr';
/* Locale and language. */
$locale = get_locale();
$lang = bon_get_language($locale);
if ($locale !== $lang) {
$classes[] = $lang;
}
$classes[] = strtolower(str_replace('_', '-', $locale));
/* Check if the current theme is a parent or child theme. */
$classes[] = is_child_theme() ? 'child-theme' : 'parent-theme';
/* Multisite check adds the 'multisite' class and the blog ID. */
if (is_multisite()) {
$classes[] = 'multisite';
$classes[] = 'blog-' . get_current_blog_id();
}
/* Date classes. */
$time = time() + get_option('gmt_offset') * 3600;
$classes[] = strtolower(gmdate('\\yY \\mm \\dd \\hH l', $time));
/* Is the current user logged in. */
$classes[] = is_user_logged_in() ? 'logged-in' : 'logged-out';
/* WP admin bar. */
if (is_admin_bar_showing()) {
$classes[] = 'admin-bar';
}
/* Use the '.custom-background' class to integrate with the WP background feature. */
if (get_background_image() || get_background_color()) {
$classes[] = 'custom-background';
}
/* Add the '.custom-header' class if the user is using a custom header. */
if (get_header_image() || display_header_text() && get_header_textcolor()) {
$classes[] = 'custom-header';
}
/* Add the '.display-header-text' class if the user chose to display it. */
if (display_header_text()) {
$classes[] = 'display-header-text';
}
/* Plural/multiple-post view (opposite of singular). */
if (is_home() || is_archive() || is_search()) {
$classes[] = 'plural';
}
/* Merge base contextual classes with $classes. */
$classes = array_merge($classes, bon_get_context());
/* Singular post (post_type) classes. */
if (is_singular()) {
/* Get the queried post object. */
$post = get_queried_object();
/* Checks for custom template. */
$template = str_replace(array("{$post->post_type}-template-", "{$post->post_type}-"), '', basename(get_post_meta(get_queried_object_id(), "_wp_{$post->post_type}_template", true), '.php'));
if (!empty($template)) {
$classes[] = "{$post->post_type}-template-{$template}";
}
/* Post format. */
if (current_theme_supports('post-formats') && post_type_supports($post->post_type, 'post-formats')) {
$post_format = get_post_format(get_queried_object_id());
$classes[] = empty($post_format) || is_wp_error($post_format) ? "{$post->post_type}-format-standard" : "{$post->post_type}-format-{$post_format}";
}
/* Attachment mime types. */
if (is_attachment()) {
foreach (explode('/', get_post_mime_type()) as $type) {
$classes[] = "attachment-{$type}";
}
}
}
/* Paged views. */
if (is_paged()) {
$classes[] = 'paged';
$classes[] = 'paged-' . intval(get_query_var('paged'));
} elseif (is_singular() && 1 < get_query_var('page')) {
$classes[] = 'paged';
$classes[] = 'paged-' . intval(get_query_var('page'));
}
/* Input class. */
if (!empty($class)) {
$class = is_array($class) ? $class : preg_split('#\\s+#', $class);
$classes = array_merge($classes, $class);
}
return array_map('esc_attr', $classes);
}
