b57da5a92a
git-svn-id: https://develop.svn.wordpress.org/trunk@20053 602fd350-edb4-49c9-b593-d223f7449a82
1557 lines
45 KiB
PHP
1557 lines
45 KiB
PHP
<?php
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/**
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* Theme, template, and stylesheet functions.
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*
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* @package WordPress
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* @subpackage Theme
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*/
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/**
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* Returns an array of WP_Theme objects based on the arguments.
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*
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* Despite advances over get_themes(), this function is still quite expensive, and grows
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* linearly with additional themes. Stick to wp_get_theme() if possible.
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*
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* @since 3.4.0
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*
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* @param array $args Arguments. Currently 'errors' (defaults to false), 'allowed'
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* (true, false; null for either; defaults to null; only applies to multisite), and 'blog_id'
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* (defaults to current blog; used to find allowed themes; only applies to multisite).
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* @return Array of WP_Theme objects.
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*/
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function wp_get_themes( $args = array() ) {
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global $wp_theme_directories;
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$defaults = array( 'errors' => false, 'allowed' => null, 'blog_id' => 0 );
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$args = wp_parse_args( $args, $defaults );
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static $_themes;
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if ( ! isset( $_themes ) ) {
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$_themes = array();
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$theme_data = search_theme_directories();
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// Make sure the current theme wins out, in case search_theme_directories() picks the wrong
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// one in the case of a conflict. (Normally, last registered theme root wins.)
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$current_theme = get_stylesheet();
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$current_theme_root = get_raw_theme_root( $current_theme );
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if ( ! in_array( $current_theme_root, $wp_theme_directories ) )
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$current_theme_root = WP_CONTENT_DIR . $current_theme_root;
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foreach ( (array) $theme_data as $theme_slug => $data ) {
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if ( $current_theme == $theme_slug && $current_theme_root != $data['theme_root'] )
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$_themes[ $theme_slug ] = new WP_Theme( $theme_slug, $current_theme_root );
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else
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$_themes[ $theme_slug ] = new WP_Theme( $theme_slug, $data['theme_root'] );
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}
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}
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$themes = $_themes;
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if ( empty( $themes ) )
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return $themes;
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if ( null !== $args['errors'] ) {
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foreach ( $themes as $theme_slug => $theme ) {
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if ( $theme->errors() != $args['errors'] )
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unset( $themes[ $theme_slug ] );
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}
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}
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if ( is_multisite() && null !== $args['allowed'] ) {
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if ( $allowed = $args['allowed'] ) {
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if ( 'network' === $allowed )
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$themes = array_intersect_key( $themes, WP_Theme::get_allowed_on_network( $args['blog_id'] ) );
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elseif ( 'site' === $allowed )
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$themes = array_intersect_key( $themes, WP_Theme::get_allowed_on_site( $args['blog_id'] ) );
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else
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$themes = array_intersect_key( $themes, WP_Theme::get_allowed( $args['blog_id'] ) );
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} else {
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$themes = array_diff_key( $themes, WP_Theme::get_allowed( $args['blog_id'] ) );
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}
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}
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return $themes;
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}
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/**
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* Gets a WP_Theme object for a theme.
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*
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* @since 3.4.0
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*
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* @param string $stylesheet Directory name for the theme. Optional. Defaults to current theme.
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* @param string $theme_root Absolute path of the theme root to look in. Optional. If not specified, get_raw_theme_root()
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* is used to calculate the theme root for the $stylesheet provided (or current theme).
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* @return WP_Theme
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*/
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function wp_get_theme( $stylesheet = null, $theme_root = null ) {
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global $wp_theme_directories;
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if ( empty( $stylesheet ) )
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$stylesheet = get_stylesheet();
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if ( empty( $theme_root ) ) {
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$theme_root = get_raw_theme_root( $stylesheet );
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if ( ! in_array( $theme_root, $wp_theme_directories ) )
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$theme_root = WP_CONTENT_DIR . $theme_root;
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}
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return new WP_Theme( $stylesheet, $theme_root );
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}
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/**
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* Whether a child theme is in use.
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*
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* @since 3.0.0
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*
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* @return bool true if a child theme is in use, false otherwise.
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**/
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function is_child_theme() {
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return ( TEMPLATEPATH !== STYLESHEETPATH );
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}
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/**
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* Retrieve name of the current stylesheet.
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*
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* The theme name that the administrator has currently set the front end theme
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* as.
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*
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* For all extensive purposes, the template name and the stylesheet name are
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* going to be the same for most cases.
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*
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* @since 1.5.0
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* @uses apply_filters() Calls 'stylesheet' filter on stylesheet name.
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*
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* @return string Stylesheet name.
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*/
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function get_stylesheet() {
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return apply_filters('stylesheet', get_option('stylesheet'));
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}
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/**
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* Retrieve stylesheet directory path for current theme.
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*
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* @since 1.5.0
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* @uses apply_filters() Calls 'stylesheet_directory' filter on stylesheet directory and theme name.
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*
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* @return string Path to current theme directory.
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*/
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function get_stylesheet_directory() {
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$stylesheet = get_stylesheet();
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$theme_root = get_theme_root( $stylesheet );
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$stylesheet_dir = "$theme_root/$stylesheet";
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return apply_filters( 'stylesheet_directory', $stylesheet_dir, $stylesheet, $theme_root );
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}
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/**
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* Retrieve stylesheet directory URI.
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*
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* @since 1.5.0
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*
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* @return string
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*/
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function get_stylesheet_directory_uri() {
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$stylesheet = get_stylesheet();
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$theme_root_uri = get_theme_root_uri( $stylesheet );
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$stylesheet_dir_uri = "$theme_root_uri/$stylesheet";
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return apply_filters( 'stylesheet_directory_uri', $stylesheet_dir_uri, $stylesheet, $theme_root_uri );
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}
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/**
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* Retrieve URI of current theme stylesheet.
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*
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* The stylesheet file name is 'style.css' which is appended to {@link
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* get_stylesheet_directory_uri() stylesheet directory URI} path.
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*
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* @since 1.5.0
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* @uses apply_filters() Calls 'stylesheet_uri' filter on stylesheet URI path and stylesheet directory URI.
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*
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* @return string
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*/
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function get_stylesheet_uri() {
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$stylesheet_dir_uri = get_stylesheet_directory_uri();
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$stylesheet_uri = $stylesheet_dir_uri . '/style.css';
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return apply_filters('stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri);
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}
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/**
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* Retrieve localized stylesheet URI.
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*
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* The stylesheet directory for the localized stylesheet files are located, by
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* default, in the base theme directory. The name of the locale file will be the
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* locale followed by '.css'. If that does not exist, then the text direction
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* stylesheet will be checked for existence, for example 'ltr.css'.
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*
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* The theme may change the location of the stylesheet directory by either using
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* the 'stylesheet_directory_uri' filter or the 'locale_stylesheet_uri' filter.
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* If you want to change the location of the stylesheet files for the entire
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* WordPress workflow, then change the former. If you just have the locale in a
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* separate folder, then change the latter.
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*
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* @since 2.1.0
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* @uses apply_filters() Calls 'locale_stylesheet_uri' filter on stylesheet URI path and stylesheet directory URI.
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*
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* @return string
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*/
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function get_locale_stylesheet_uri() {
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global $wp_locale;
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$stylesheet_dir_uri = get_stylesheet_directory_uri();
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$dir = get_stylesheet_directory();
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$locale = get_locale();
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if ( file_exists("$dir/$locale.css") )
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$stylesheet_uri = "$stylesheet_dir_uri/$locale.css";
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elseif ( !empty($wp_locale->text_direction) && file_exists("$dir/{$wp_locale->text_direction}.css") )
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$stylesheet_uri = "$stylesheet_dir_uri/{$wp_locale->text_direction}.css";
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else
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$stylesheet_uri = '';
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return apply_filters('locale_stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri);
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}
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/**
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* Retrieve name of the current theme.
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*
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* @since 1.5.0
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* @uses apply_filters() Calls 'template' filter on template option.
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*
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* @return string Template name.
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*/
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function get_template() {
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return apply_filters('template', get_option('template'));
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}
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/**
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* Retrieve current theme directory.
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*
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* @since 1.5.0
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* @uses apply_filters() Calls 'template_directory' filter on template directory path and template name.
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*
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* @return string Template directory path.
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*/
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function get_template_directory() {
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$template = get_template();
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$theme_root = get_theme_root( $template );
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$template_dir = "$theme_root/$template";
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return apply_filters( 'template_directory', $template_dir, $template, $theme_root );
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}
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/**
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* Retrieve theme directory URI.
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*
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* @since 1.5.0
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* @uses apply_filters() Calls 'template_directory_uri' filter on template directory URI path and template name.
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*
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* @return string Template directory URI.
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*/
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function get_template_directory_uri() {
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$template = get_template();
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$theme_root_uri = get_theme_root_uri( $template );
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$template_dir_uri = "$theme_root_uri/$template";
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return apply_filters( 'template_directory_uri', $template_dir_uri, $template, $theme_root_uri );
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}
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/**
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* Retrieve theme data from parsed theme file.
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*
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* The description will have the tags filtered with the following HTML elements
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* whitelisted. The <b>'a'</b> element with the <em>href</em> and <em>title</em>
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* attributes. The <b>abbr</b> element with the <em>title</em> attribute. The
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* <b>acronym</b> element with the <em>title</em> attribute allowed. The
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* <b>code</b>, <b>em</b>, and <b>strong</b> elements also allowed.
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*
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* The style.css file must contain theme name, theme URI, and description. The
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* data can also contain author URI, author, template (parent template),
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* version, status, and finally tags. Some of these are not used by WordPress
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* administration panels, but are used by theme directory web sites which list
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* the theme.
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*
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* @since 1.5.0
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*
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* @param string $theme_file Theme file path.
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* @return array Theme data.
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*/
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function get_theme_data( $theme_file ) {
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$default_headers = array(
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'Name' => 'Theme Name',
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'URI' => 'Theme URI',
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'Description' => 'Description',
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'Author' => 'Author',
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'AuthorURI' => 'Author URI',
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'Version' => 'Version',
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'Template' => 'Template',
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'Status' => 'Status',
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'Tags' => 'Tags'
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);
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$themes_allowed_tags = array(
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'a' => array(
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'href' => array(),'title' => array()
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),
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'abbr' => array(
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'title' => array()
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),
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'acronym' => array(
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'title' => array()
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),
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'code' => array(),
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'em' => array(),
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'strong' => array()
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);
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$theme_data = get_file_data( $theme_file, $default_headers, 'theme' );
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$theme_data['Name'] = $theme_data['Title'] = wp_kses( $theme_data['Name'], $themes_allowed_tags );
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$theme_data['URI'] = esc_url( $theme_data['URI'] );
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$theme_data['Description'] = wptexturize( wp_kses( $theme_data['Description'], $themes_allowed_tags ) );
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$theme_data['AuthorURI'] = esc_url( $theme_data['AuthorURI'] );
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$theme_data['Template'] = wp_kses( $theme_data['Template'], $themes_allowed_tags );
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$theme_data['Version'] = wp_kses( $theme_data['Version'], $themes_allowed_tags );
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if ( $theme_data['Status'] == '' )
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$theme_data['Status'] = 'publish';
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else
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$theme_data['Status'] = wp_kses( $theme_data['Status'], $themes_allowed_tags );
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if ( $theme_data['Tags'] == '' )
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$theme_data['Tags'] = array();
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else
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$theme_data['Tags'] = array_map( 'trim', explode( ',', wp_kses( $theme_data['Tags'], array() ) ) );
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if ( $theme_data['Author'] == '' ) {
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$theme_data['Author'] = $theme_data['AuthorName'] = __('Anonymous');
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} else {
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$theme_data['AuthorName'] = wp_kses( $theme_data['Author'], $themes_allowed_tags );
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if ( empty( $theme_data['AuthorURI'] ) ) {
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$theme_data['Author'] = $theme_data['AuthorName'];
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} else {
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$theme_data['Author'] = sprintf( '<a href="%1$s" title="%2$s">%3$s</a>', $theme_data['AuthorURI'], esc_attr__( 'Visit author homepage' ), $theme_data['AuthorName'] );
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}
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}
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return $theme_data;
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}
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/**
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* Retrieve theme roots.
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*
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* @since 2.9.0
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*
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* @return array|string An array of theme roots keyed by template/stylesheet or a single theme root if all themes have the same root.
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*/
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function get_theme_roots() {
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global $wp_theme_directories;
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if ( count($wp_theme_directories) <= 1 )
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return '/themes';
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$theme_roots = get_site_transient( 'theme_roots' );
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if ( false === $theme_roots ) {
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search_theme_directories(); // Regenerate the transient.
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$theme_roots = get_site_transient( 'theme_roots' );
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}
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return $theme_roots;
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}
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/**
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* Register a directory that contains themes.
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*
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* @since 2.9.0
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*
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* @param string $directory Either the full filesystem path to a theme folder or a folder within WP_CONTENT_DIR
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* @return bool
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*/
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function register_theme_directory( $directory ) {
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global $wp_theme_directories;
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if ( ! file_exists( $directory ) ) {
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// Try prepending as the theme directory could be relative to the content directory
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$directory = WP_CONTENT_DIR . '/' . $directory;
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// If this directory does not exist, return and do not register
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if ( ! file_exists( $directory ) )
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return false;
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}
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$wp_theme_directories[] = $directory;
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return true;
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}
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/**
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* Search all registered theme directories for complete and valid themes.
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*
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* @since 2.9.0
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*
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* @return array Valid themes found
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*/
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function search_theme_directories() {
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global $wp_theme_directories;
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if ( empty( $wp_theme_directories ) )
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return false;
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static $found_themes;
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if ( isset( $found_themes ) )
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return $found_themes;
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$found_themes = array();
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if ( $cache_expiration = apply_filters( 'wp_cache_themes_persistently', false, 'search_theme_directories' ) ) {
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$cached_roots = get_site_transient( 'theme_roots' );
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if ( is_array( $cached_roots ) ) {
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foreach ( $cached_roots as $theme_dir => $theme_root ) {
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$found_themes[ $theme_dir ] = array(
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'theme_file' => $theme_dir . '/style.css',
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'theme_root' => $theme_root,
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);
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}
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return $found_themes;
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}
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if ( ! is_int( $cache_expiration ) )
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$cache_expiration = 7200;
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} else {
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// Two hours is the default.
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$cache_expiration = 7200;
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}
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/* Loop the registered theme directories and extract all themes */
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foreach ( $wp_theme_directories as $theme_root ) {
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// Start with directories in the root of the current theme directory.
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$dirs = @ scandir( $theme_root );
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if ( ! $dirs )
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return false;
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foreach ( $dirs as $dir ) {
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if ( ! is_dir( $theme_root . '/' . $dir ) || $dir[0] == '.' || $dir == 'CVS' )
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continue;
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if ( file_exists( $theme_root . '/' . $dir . '/style.css' ) ) {
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// wp-content/themes/a-single-theme
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// wp-content/themes is $theme_root, a-single-theme is $dir
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$found_themes[ $dir ] = array(
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'theme_file' => $dir . '/style.css',
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'theme_root' => $theme_root,
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);
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} else {
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$found_theme = false;
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// wp-content/themes/a-folder-of-themes/*
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// wp-content/themes is $theme_root, a-folder-of-themes is $dir, then themes are $sub_dirs
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$sub_dirs = @ scandir( $theme_root . '/' . $dir );
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if ( ! $sub_dirs )
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return false;
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foreach ( $sub_dirs as $sub_dir ) {
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if ( ! is_dir( $theme_root . '/' . $dir ) || $dir[0] == '.' || $dir == 'CVS' )
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continue;
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if ( ! file_exists( $theme_root . '/' . $dir . '/' . $sub_dir . '/style.css' ) )
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continue;
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$found_themes[ $dir . '/' . $sub_dir ] = array(
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'theme_file' => $dir . '/' . $sub_dir . '/style.css',
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'theme_root' => $theme_root,
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);
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$found_theme = true;
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}
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// Never mind the above, it's just a theme missing a style.css.
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// Return it; WP_Theme will catch the error.
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if ( ! $found_theme )
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$found_themes[ $dir ] = array(
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'theme_file' => $dir . '/style.css',
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'theme_root' => $theme_root,
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);
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}
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}
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}
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asort( $found_themes );
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$theme_roots = array();
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foreach ( $found_themes as $theme_dir => $theme_data ) {
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$theme_roots[ $theme_dir ] = $theme_data['theme_root'];
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}
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if ( $theme_roots != get_site_transient( 'theme_roots' ) )
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set_site_transient( 'theme_roots', $theme_roots, $cache_expiration );
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return $found_themes;
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}
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/**
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* Retrieve path to themes directory.
|
|
*
|
|
* Does not have trailing slash.
|
|
*
|
|
* @since 1.5.0
|
|
* @uses apply_filters() Calls 'theme_root' filter on path.
|
|
*
|
|
* @param string $stylesheet_or_template The stylesheet or template name of the theme
|
|
* @return string Theme path.
|
|
*/
|
|
function get_theme_root( $stylesheet_or_template = false ) {
|
|
global $wp_theme_directories;
|
|
|
|
if ( $stylesheet_or_template && $theme_root = get_raw_theme_root( $stylesheet_or_template ) ) {
|
|
// Always prepend WP_CONTENT_DIR unless the root currently registered as a theme directory.
|
|
// This gives relative theme roots the benefit of the doubt when things go haywire.
|
|
if ( ! in_array( $theme_root, $wp_theme_directories ) )
|
|
$theme_root = WP_CONTENT_DIR . $theme_root;
|
|
} else {
|
|
$theme_root = WP_CONTENT_DIR . '/themes';
|
|
}
|
|
|
|
return apply_filters( 'theme_root', $theme_root );
|
|
}
|
|
|
|
/**
|
|
* Retrieve URI for themes directory.
|
|
*
|
|
* Does not have trailing slash.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @param string $stylesheet_or_template The stylesheet or template name of the theme
|
|
* @return string Themes URI.
|
|
*/
|
|
function get_theme_root_uri( $stylesheet_or_template = false ) {
|
|
global $wp_theme_directories;
|
|
|
|
if ( $stylesheet_or_template && $theme_root = get_raw_theme_root( $stylesheet_or_template ) ) {
|
|
if ( in_array( $theme_root, $wp_theme_directories ) ) {
|
|
// Absolute path. Make an educated guess. YMMV -- but note the filter below.
|
|
if ( 0 === strpos( $theme_root, WP_CONTENT_DIR ) )
|
|
$theme_root_uri = content_url( str_replace( WP_CONTENT_DIR, '', $theme_root ) );
|
|
elseif ( 0 === strpos( $theme_root, ABSPATH ) )
|
|
$theme_root_uri = site_url( str_replace( ABSPATH, '', $theme_root ) );
|
|
elseif ( 0 === strpos( $theme_root, WP_PLUGIN_DIR ) || 0 === strpos( $theme_root, WPMU_PLUGIN_DIR ) )
|
|
$theme_root_uri = plugins_url( basename( $theme_root ), $theme_root );
|
|
else
|
|
$theme_root_uri = $theme_root;
|
|
} else {
|
|
$theme_root_uri = content_url( $theme_root );
|
|
}
|
|
} else {
|
|
$theme_root_uri = content_url( 'themes' );
|
|
}
|
|
|
|
return apply_filters( 'theme_root_uri', $theme_root_uri, get_option('siteurl'), $stylesheet_or_template );
|
|
}
|
|
|
|
/**
|
|
* Get the raw theme root relative to the content directory with no filters applied.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @param string $stylesheet_or_template The stylesheet or template name of the theme
|
|
* @param bool $skip_cache Optional. Whether to skip the cache. Defaults to false, meaning the cache is used.
|
|
* @return string Theme root
|
|
*/
|
|
function get_raw_theme_root( $stylesheet_or_template, $skip_cache = false ) {
|
|
global $wp_theme_directories;
|
|
|
|
if ( count($wp_theme_directories) <= 1 )
|
|
return '/themes';
|
|
|
|
$theme_root = false;
|
|
|
|
// If requesting the root for the current theme, consult options to avoid calling get_theme_roots()
|
|
if ( ! $skip_cache ) {
|
|
if ( get_option('stylesheet') == $stylesheet_or_template )
|
|
$theme_root = get_option('stylesheet_root');
|
|
elseif ( get_option('template') == $stylesheet_or_template )
|
|
$theme_root = get_option('template_root');
|
|
}
|
|
|
|
if ( empty($theme_root) ) {
|
|
$theme_roots = get_theme_roots();
|
|
if ( !empty($theme_roots[$stylesheet_or_template]) )
|
|
$theme_root = $theme_roots[$stylesheet_or_template];
|
|
}
|
|
|
|
return $theme_root;
|
|
}
|
|
|
|
/**
|
|
* Display localized stylesheet link element.
|
|
*
|
|
* @since 2.1.0
|
|
*/
|
|
function locale_stylesheet() {
|
|
$stylesheet = get_locale_stylesheet_uri();
|
|
if ( empty($stylesheet) )
|
|
return;
|
|
echo '<link rel="stylesheet" href="' . $stylesheet . '" type="text/css" media="screen" />';
|
|
}
|
|
|
|
/**
|
|
* Start preview theme output buffer.
|
|
*
|
|
* Will only preform task if the user has permissions and template and preview
|
|
* query variables exist.
|
|
*
|
|
* @since 2.6.0
|
|
*/
|
|
function preview_theme() {
|
|
if ( ! (isset($_GET['template']) && isset($_GET['preview'])) )
|
|
return;
|
|
|
|
if ( !current_user_can( 'switch_themes' ) )
|
|
return;
|
|
|
|
// Admin Thickbox requests
|
|
if ( isset( $_GET['preview_iframe'] ) )
|
|
show_admin_bar( false );
|
|
|
|
$_GET['template'] = preg_replace('|[^a-z0-9_./-]|i', '', $_GET['template']);
|
|
|
|
if ( validate_file($_GET['template']) )
|
|
return;
|
|
|
|
add_filter( 'template', '_preview_theme_template_filter' );
|
|
|
|
if ( isset($_GET['stylesheet']) ) {
|
|
$_GET['stylesheet'] = preg_replace('|[^a-z0-9_./-]|i', '', $_GET['stylesheet']);
|
|
if ( validate_file($_GET['stylesheet']) )
|
|
return;
|
|
add_filter( 'stylesheet', '_preview_theme_stylesheet_filter' );
|
|
}
|
|
|
|
// Prevent theme mods to current theme being used on theme being previewed
|
|
add_filter( 'pre_option_theme_mods_' . get_option( 'stylesheet' ), '__return_empty_array' );
|
|
|
|
ob_start( 'preview_theme_ob_filter' );
|
|
}
|
|
add_action('setup_theme', 'preview_theme');
|
|
|
|
/**
|
|
* Private function to modify the current template when previewing a theme
|
|
*
|
|
* @since 2.9.0
|
|
* @access private
|
|
*
|
|
* @return string
|
|
*/
|
|
function _preview_theme_template_filter() {
|
|
return isset($_GET['template']) ? $_GET['template'] : '';
|
|
}
|
|
|
|
/**
|
|
* Private function to modify the current stylesheet when previewing a theme
|
|
*
|
|
* @since 2.9.0
|
|
* @access private
|
|
*
|
|
* @return string
|
|
*/
|
|
function _preview_theme_stylesheet_filter() {
|
|
return isset($_GET['stylesheet']) ? $_GET['stylesheet'] : '';
|
|
}
|
|
|
|
/**
|
|
* Callback function for ob_start() to capture all links in the theme.
|
|
*
|
|
* @since 2.6.0
|
|
* @access private
|
|
*
|
|
* @param string $content
|
|
* @return string
|
|
*/
|
|
function preview_theme_ob_filter( $content ) {
|
|
return preg_replace_callback( "|(<a.*?href=([\"']))(.*?)([\"'].*?>)|", 'preview_theme_ob_filter_callback', $content );
|
|
}
|
|
|
|
/**
|
|
* Manipulates preview theme links in order to control and maintain location.
|
|
*
|
|
* Callback function for preg_replace_callback() to accept and filter matches.
|
|
*
|
|
* @since 2.6.0
|
|
* @access private
|
|
*
|
|
* @param array $matches
|
|
* @return string
|
|
*/
|
|
function preview_theme_ob_filter_callback( $matches ) {
|
|
if ( strpos($matches[4], 'onclick') !== false )
|
|
$matches[4] = preg_replace('#onclick=([\'"]).*?(?<!\\\)\\1#i', '', $matches[4]); //Strip out any onclicks from rest of <a>. (?<!\\\) means to ignore the '" if its escaped by \ to prevent breaking mid-attribute.
|
|
if (
|
|
( false !== strpos($matches[3], '/wp-admin/') )
|
|
||
|
|
( false !== strpos( $matches[3], '://' ) && 0 !== strpos( $matches[3], home_url() ) )
|
|
||
|
|
( false !== strpos($matches[3], '/feed/') )
|
|
||
|
|
( false !== strpos($matches[3], '/trackback/') )
|
|
)
|
|
return $matches[1] . "#$matches[2] onclick=$matches[2]return false;" . $matches[4];
|
|
|
|
$link = add_query_arg( array( 'preview' => 1, 'template' => $_GET['template'], 'stylesheet' => @$_GET['stylesheet'], 'preview_iframe' => 1 ), $matches[3] );
|
|
if ( 0 === strpos($link, 'preview=1') )
|
|
$link = "?$link";
|
|
return $matches[1] . esc_attr( $link ) . $matches[4];
|
|
}
|
|
|
|
/**
|
|
* Switches current theme to new template and stylesheet names.
|
|
*
|
|
* @since 2.5.0
|
|
* @uses do_action() Calls 'switch_theme' action, passing the new theme.
|
|
*
|
|
* @param string $template Template name
|
|
* @param string $stylesheet Stylesheet name.
|
|
*/
|
|
function switch_theme( $template, $stylesheet ) {
|
|
global $wp_theme_directories, $sidebars_widgets;
|
|
|
|
if ( is_array( $sidebars_widgets ) )
|
|
set_theme_mod( 'sidebars_widgets', array( 'time' => time(), 'data' => $sidebars_widgets ) );
|
|
|
|
$old_theme = wp_get_theme();
|
|
$new_theme = wp_get_theme( $stylesheet );
|
|
$new_name = $new_theme->get('Name');
|
|
|
|
update_option( 'template', $template );
|
|
update_option( 'stylesheet', $stylesheet );
|
|
|
|
if ( count( $wp_theme_directories ) > 1 ) {
|
|
update_option( 'template_root', get_raw_theme_root( $template, true ) );
|
|
update_option( 'stylesheet_root', get_raw_theme_root( $stylesheet, true ) );
|
|
}
|
|
|
|
update_option( 'current_theme', $new_name );
|
|
|
|
if ( is_admin() && false === get_option( 'theme_mods_' . $stylesheet ) ) {
|
|
$default_theme_mods = (array) get_option( 'mods_' . $new_name );
|
|
add_option( "theme_mods_$stylesheet", $default_theme_mods );
|
|
}
|
|
|
|
update_option( 'theme_switched', $old_theme->get('Name') );
|
|
do_action( 'switch_theme', $new_name, $new_theme );
|
|
}
|
|
|
|
/**
|
|
* Checks that current theme files 'index.php' and 'style.css' exists.
|
|
*
|
|
* Does not check the default theme, which is the fallback and should always exist.
|
|
* Will switch theme to the fallback theme if current theme does not validate.
|
|
* You can use the 'validate_current_theme' filter to return false to
|
|
* disable this functionality.
|
|
*
|
|
* @since 1.5.0
|
|
* @see WP_DEFAULT_THEME
|
|
*
|
|
* @return bool
|
|
*/
|
|
function validate_current_theme() {
|
|
// Don't validate during an install/upgrade.
|
|
if ( defined('WP_INSTALLING') || !apply_filters( 'validate_current_theme', true ) )
|
|
return true;
|
|
|
|
if ( get_template() != WP_DEFAULT_THEME && !file_exists(get_template_directory() . '/index.php') ) {
|
|
switch_theme( WP_DEFAULT_THEME, WP_DEFAULT_THEME );
|
|
return false;
|
|
}
|
|
|
|
if ( get_stylesheet() != WP_DEFAULT_THEME && !file_exists(get_template_directory() . '/style.css') ) {
|
|
switch_theme( WP_DEFAULT_THEME, WP_DEFAULT_THEME );
|
|
return false;
|
|
}
|
|
|
|
if ( is_child_theme() && ! file_exists( get_stylesheet_directory() . '/style.css' ) ) {
|
|
switch_theme( WP_DEFAULT_THEME, WP_DEFAULT_THEME );
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Retrieve all theme modifications.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @return array Theme modifications.
|
|
*/
|
|
function get_theme_mods() {
|
|
$theme_slug = get_option( 'stylesheet' );
|
|
if ( false === ( $mods = get_option( "theme_mods_$theme_slug" ) ) ) {
|
|
$theme_name = get_option( 'current_theme' );
|
|
if ( false === $theme_name )
|
|
$theme_name = wp_get_theme()->get('Name');
|
|
$mods = get_option( "mods_$theme_name" ); // Deprecated location.
|
|
if ( is_admin() && false !== $mods ) {
|
|
update_option( "theme_mods_$theme_slug", $mods );
|
|
delete_option( "mods_$theme_name" );
|
|
}
|
|
}
|
|
return $mods;
|
|
}
|
|
|
|
/**
|
|
* Retrieve theme modification value for the current theme.
|
|
*
|
|
* If the modification name does not exist, then the $default will be passed
|
|
* through {@link http://php.net/sprintf sprintf()} PHP function with the first
|
|
* string the template directory URI and the second string the stylesheet
|
|
* directory URI.
|
|
*
|
|
* @since 2.1.0
|
|
* @uses apply_filters() Calls 'theme_mod_$name' filter on the value.
|
|
*
|
|
* @param string $name Theme modification name.
|
|
* @param bool|string $default
|
|
* @return string
|
|
*/
|
|
function get_theme_mod( $name, $default = false ) {
|
|
$mods = get_theme_mods();
|
|
|
|
if ( isset( $mods[ $name ] ) )
|
|
return apply_filters( "theme_mod_$name", $mods[ $name ] );
|
|
|
|
if ( is_string( $default ) )
|
|
$default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
|
|
|
|
return apply_filters( "theme_mod_$name", $default );
|
|
}
|
|
|
|
/**
|
|
* Update theme modification value for the current theme.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $name Theme modification name.
|
|
* @param string $value theme modification value.
|
|
*/
|
|
function set_theme_mod( $name, $value ) {
|
|
$mods = get_theme_mods();
|
|
|
|
$mods[ $name ] = $value;
|
|
|
|
$theme = get_option( 'stylesheet' );
|
|
update_option( "theme_mods_$theme", $mods );
|
|
}
|
|
|
|
/**
|
|
* Remove theme modification name from current theme list.
|
|
*
|
|
* If removing the name also removes all elements, then the entire option will
|
|
* be removed.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $name Theme modification name.
|
|
* @return null
|
|
*/
|
|
function remove_theme_mod( $name ) {
|
|
$mods = get_theme_mods();
|
|
|
|
if ( ! isset( $mods[ $name ] ) )
|
|
return;
|
|
|
|
unset( $mods[ $name ] );
|
|
|
|
if ( empty( $mods ) )
|
|
return remove_theme_mods();
|
|
|
|
$theme = get_option( 'stylesheet' );
|
|
update_option( "theme_mods_$theme", $mods );
|
|
}
|
|
|
|
/**
|
|
* Remove theme modifications option for current theme.
|
|
*
|
|
* @since 2.1.0
|
|
*/
|
|
function remove_theme_mods() {
|
|
delete_option( 'theme_mods_' . get_option( 'stylesheet' ) );
|
|
|
|
// Old style.
|
|
$theme_name = get_option( 'current_theme' );
|
|
if ( false === $theme_name )
|
|
$theme_name = wp_get_theme()->get('Name');
|
|
delete_option( 'mods_' . $theme_name );
|
|
}
|
|
|
|
/**
|
|
* Retrieve text color for custom header.
|
|
*
|
|
* @since 2.1.0
|
|
* @uses HEADER_TEXTCOLOR
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_header_textcolor() {
|
|
$default = defined('HEADER_TEXTCOLOR') ? HEADER_TEXTCOLOR : '';
|
|
|
|
return get_theme_mod('header_textcolor', $default);
|
|
}
|
|
|
|
/**
|
|
* Display text color for custom header.
|
|
*
|
|
* @since 2.1.0
|
|
*/
|
|
function header_textcolor() {
|
|
echo get_header_textcolor();
|
|
}
|
|
|
|
/**
|
|
* Retrieve header image for custom header.
|
|
*
|
|
* @since 2.1.0
|
|
* @uses HEADER_IMAGE
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_header_image() {
|
|
$default = defined( 'HEADER_IMAGE' ) ? HEADER_IMAGE : '';
|
|
$url = get_theme_mod( 'header_image', $default );
|
|
|
|
if ( 'remove-header' == $url )
|
|
return false;
|
|
|
|
if ( is_random_header_image() )
|
|
$url = get_random_header_image();
|
|
|
|
if ( is_ssl() )
|
|
$url = str_replace( 'http://', 'https://', $url );
|
|
else
|
|
$url = str_replace( 'https://', 'http://', $url );
|
|
|
|
return esc_url_raw( $url );
|
|
}
|
|
|
|
/**
|
|
* Get random header image data from registered images in theme.
|
|
*
|
|
* @since 3.4.0
|
|
*
|
|
* @access private
|
|
*
|
|
* @return string Path to header image
|
|
*/
|
|
|
|
function _get_random_header_data() {
|
|
static $_wp_random_header;
|
|
|
|
if ( empty( $_wp_random_header ) ) {
|
|
global $_wp_default_headers;
|
|
$header_image_mod = get_theme_mod( 'header_image', '' );
|
|
$headers = array();
|
|
|
|
if ( 'random-uploaded-image' == $header_image_mod )
|
|
$headers = get_uploaded_header_images();
|
|
elseif ( ! empty( $_wp_default_headers ) ) {
|
|
if ( 'random-default-image' == $header_image_mod ) {
|
|
$headers = $_wp_default_headers;
|
|
} else {
|
|
$is_random = get_theme_support( 'custom-header' );
|
|
if ( isset( $is_random[ 0 ] ) && !empty( $is_random[ 0 ][ 'random-default' ] ) )
|
|
$headers = $_wp_default_headers;
|
|
}
|
|
}
|
|
|
|
if ( empty( $headers ) )
|
|
return new stdClass;
|
|
|
|
$_wp_random_header = (object) $headers[ array_rand( $headers ) ];
|
|
|
|
$_wp_random_header->url = sprintf( $_wp_random_header->url, get_template_directory_uri(), get_stylesheet_directory_uri() );
|
|
$_wp_random_header->thumbnail_url = sprintf( $_wp_random_header->thumbnail_url, get_template_directory_uri(), get_stylesheet_directory_uri() );
|
|
}
|
|
return $_wp_random_header;
|
|
}
|
|
|
|
/**
|
|
* Get random header image url from registered images in theme.
|
|
*
|
|
* @since 3.2.0
|
|
*
|
|
* @return string Path to header image
|
|
*/
|
|
|
|
function get_random_header_image() {
|
|
$random_image = _get_random_header_data();
|
|
if ( empty( $random_image->url ) )
|
|
return '';
|
|
return $random_image->url;
|
|
}
|
|
|
|
/**
|
|
* Check if random header image is in use.
|
|
*
|
|
* Always true if user expressly chooses the option in Appearance > Header.
|
|
* Also true if theme has multiple header images registered, no specific header image
|
|
* is chosen, and theme turns on random headers with add_theme_support().
|
|
*
|
|
* @since 3.2.0
|
|
* @uses HEADER_IMAGE
|
|
*
|
|
* @param string $type The random pool to use. any|default|uploaded
|
|
* @return boolean
|
|
*/
|
|
function is_random_header_image( $type = 'any' ) {
|
|
$default = defined( 'HEADER_IMAGE' ) ? HEADER_IMAGE : '';
|
|
$header_image_mod = get_theme_mod( 'header_image', $default );
|
|
|
|
if ( 'any' == $type ) {
|
|
if ( 'random-default-image' == $header_image_mod || 'random-uploaded-image' == $header_image_mod || ( '' != get_random_header_image() && empty( $header_image_mod ) ) )
|
|
return true;
|
|
} else {
|
|
if ( "random-$type-image" == $header_image_mod )
|
|
return true;
|
|
elseif ( 'default' == $type && empty( $header_image_mod ) && '' != get_random_header_image() )
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Display header image path.
|
|
*
|
|
* @since 2.1.0
|
|
*/
|
|
function header_image() {
|
|
echo get_header_image();
|
|
}
|
|
|
|
/**
|
|
* Get the header images uploaded for the current theme.
|
|
*
|
|
* @since 3.2.0
|
|
*
|
|
* @return array
|
|
*/
|
|
function get_uploaded_header_images() {
|
|
$header_images = array();
|
|
|
|
// @todo caching
|
|
$headers = get_posts( array( 'post_type' => 'attachment', 'meta_key' => '_wp_attachment_is_custom_header', 'meta_value' => get_option('stylesheet'), 'orderby' => 'none', 'nopaging' => true ) );
|
|
|
|
if ( empty( $headers ) )
|
|
return array();
|
|
|
|
foreach ( (array) $headers as $header ) {
|
|
$url = esc_url_raw( $header->guid );
|
|
$header_data = wp_get_attachment_metadata( $header->ID );
|
|
$header_index = basename($url);
|
|
$header_images[$header_index] = array();
|
|
$header_images[$header_index]['attachment_id'] = $header->ID;
|
|
$header_images[$header_index]['url'] = $url;
|
|
$header_images[$header_index]['thumbnail_url'] = $url;
|
|
$header_images[$header_index]['width'] = $header_data['width'];
|
|
$header_images[$header_index]['height'] = $header_data['height'];
|
|
}
|
|
|
|
return $header_images;
|
|
}
|
|
|
|
/**
|
|
* Get the header image data.
|
|
*
|
|
* @since 3.4.0
|
|
*
|
|
* @return object
|
|
*/
|
|
function get_current_header_data() {
|
|
$data = is_random_header_image()? _get_random_header_data() : get_theme_mod( 'header_image_data' );
|
|
$default = array(
|
|
'url' => '',
|
|
'thumbnail_url' => '',
|
|
'width' => '',
|
|
'height' => '',
|
|
);
|
|
return (object) wp_parse_args( $data, $default );
|
|
}
|
|
|
|
/**
|
|
* Get the header image width.
|
|
*
|
|
* @since 3.4.0
|
|
*
|
|
* @return int
|
|
*/
|
|
function get_header_image_width() {
|
|
return empty( get_current_header_data()->width )? HEADER_IMAGE_WIDTH : get_current_header_data()->width;
|
|
}
|
|
|
|
/**
|
|
* Get the header image height.
|
|
*
|
|
* @since 3.4.0
|
|
*
|
|
* @return int
|
|
*/
|
|
function get_header_image_height() {
|
|
return empty( get_current_header_data()->height )? HEADER_IMAGE_HEIGHT : get_current_header_data()->height;
|
|
}
|
|
|
|
/**
|
|
* Add callbacks for image header display.
|
|
*
|
|
* The parameter $header_callback callback will be required to display the
|
|
* content for the 'wp_head' action. The parameter $admin_header_callback
|
|
* callback will be added to Custom_Image_Header class and that will be added
|
|
* to the 'admin_menu' action.
|
|
*
|
|
* @since 2.1.0
|
|
* @uses Custom_Image_Header Sets up for $admin_header_callback for administration panel display.
|
|
*
|
|
* @param callback $header_callback Call on 'wp_head' action.
|
|
* @param callback $admin_header_callback Call on custom header administration screen.
|
|
* @param callback $admin_image_div_callback Output a custom header image div on the custom header administration screen. Optional.
|
|
*/
|
|
function add_custom_image_header( $header_callback, $admin_header_callback, $admin_image_div_callback = '' ) {
|
|
if ( ! empty( $header_callback ) )
|
|
add_action('wp_head', $header_callback);
|
|
|
|
$support = array( 'callback' => $header_callback );
|
|
$theme_support = get_theme_support( 'custom-header' );
|
|
if ( ! empty( $theme_support ) && is_array( $theme_support[ 0 ] ) )
|
|
$support = array_merge( $theme_support[ 0 ], $support );
|
|
add_theme_support( 'custom-header', $support );
|
|
add_theme_support( 'custom-header-uploads' );
|
|
|
|
if ( ! is_admin() )
|
|
return;
|
|
|
|
global $custom_image_header;
|
|
|
|
require_once( ABSPATH . 'wp-admin/custom-header.php' );
|
|
$custom_image_header = new Custom_Image_Header( $admin_header_callback, $admin_image_div_callback );
|
|
add_action( 'admin_menu', array( &$custom_image_header, 'init' ) );
|
|
}
|
|
|
|
/**
|
|
* Remove image header support.
|
|
*
|
|
* @since 3.1.0
|
|
* @see add_custom_image_header()
|
|
*
|
|
* @return bool Whether support was removed.
|
|
*/
|
|
function remove_custom_image_header() {
|
|
if ( ! current_theme_supports( 'custom-header' ) )
|
|
return false;
|
|
|
|
$callback = get_theme_support( 'custom-header' );
|
|
remove_action( 'wp_head', $callback[0]['callback'] );
|
|
_remove_theme_support( 'custom-header' );
|
|
remove_theme_support( 'custom-header-uploads' );
|
|
|
|
if ( is_admin() ) {
|
|
remove_action( 'admin_menu', array( &$GLOBALS['custom_image_header'], 'init' ) );
|
|
unset( $GLOBALS['custom_image_header'] );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Register a selection of default headers to be displayed by the custom header admin UI.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @param array $headers Array of headers keyed by a string id. The ids point to arrays containing 'url', 'thumbnail_url', and 'description' keys.
|
|
*/
|
|
function register_default_headers( $headers ) {
|
|
global $_wp_default_headers;
|
|
|
|
$_wp_default_headers = array_merge( (array) $_wp_default_headers, (array) $headers );
|
|
}
|
|
|
|
/**
|
|
* Unregister default headers.
|
|
*
|
|
* This function must be called after register_default_headers() has already added the
|
|
* header you want to remove.
|
|
*
|
|
* @see register_default_headers()
|
|
* @since 3.0.0
|
|
*
|
|
* @param string|array $header The header string id (key of array) to remove, or an array thereof.
|
|
* @return True on success, false on failure.
|
|
*/
|
|
function unregister_default_headers( $header ) {
|
|
global $_wp_default_headers;
|
|
if ( is_array( $header ) ) {
|
|
array_map( 'unregister_default_headers', $header );
|
|
} elseif ( isset( $_wp_default_headers[ $header ] ) ) {
|
|
unset( $_wp_default_headers[ $header ] );
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Retrieve background image for custom background.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_background_image() {
|
|
$default = defined('BACKGROUND_IMAGE') ? BACKGROUND_IMAGE : '';
|
|
|
|
return get_theme_mod('background_image', $default);
|
|
}
|
|
|
|
/**
|
|
* Display background image path.
|
|
*
|
|
* @since 3.0.0
|
|
*/
|
|
function background_image() {
|
|
echo get_background_image();
|
|
}
|
|
|
|
/**
|
|
* Retrieve value for custom background color.
|
|
*
|
|
* @since 3.0.0
|
|
* @uses BACKGROUND_COLOR
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_background_color() {
|
|
$default = defined('BACKGROUND_COLOR') ? BACKGROUND_COLOR : '';
|
|
|
|
return get_theme_mod('background_color', $default);
|
|
}
|
|
|
|
/**
|
|
* Display background color value.
|
|
*
|
|
* @since 3.0.0
|
|
*/
|
|
function background_color() {
|
|
echo get_background_color();
|
|
}
|
|
|
|
/**
|
|
* Add callbacks for background image display.
|
|
*
|
|
* The parameter $header_callback callback will be required to display the
|
|
* content for the 'wp_head' action. The parameter $admin_header_callback
|
|
* callback will be added to Custom_Background class and that will be added
|
|
* to the 'admin_menu' action.
|
|
*
|
|
* @since 3.0.0
|
|
* @uses Custom_Background Sets up for $admin_header_callback for administration panel display.
|
|
*
|
|
* @param callback $header_callback Call on 'wp_head' action.
|
|
* @param callback $admin_header_callback Call on custom background administration screen.
|
|
* @param callback $admin_image_div_callback Output a custom background image div on the custom background administration screen. Optional.
|
|
*/
|
|
function add_custom_background( $header_callback = '', $admin_header_callback = '', $admin_image_div_callback = '' ) {
|
|
if ( isset( $GLOBALS['custom_background'] ) )
|
|
return;
|
|
|
|
if ( empty( $header_callback ) )
|
|
$header_callback = '_custom_background_cb';
|
|
|
|
add_action( 'wp_head', $header_callback );
|
|
|
|
add_theme_support( 'custom-background', array( 'callback' => $header_callback ) );
|
|
|
|
if ( ! is_admin() )
|
|
return;
|
|
require_once( ABSPATH . 'wp-admin/custom-background.php' );
|
|
$GLOBALS['custom_background'] = new Custom_Background( $admin_header_callback, $admin_image_div_callback );
|
|
add_action( 'admin_menu', array( &$GLOBALS['custom_background'], 'init' ) );
|
|
}
|
|
|
|
/**
|
|
* Remove custom background support.
|
|
*
|
|
* @since 3.1.0
|
|
* @see add_custom_background()
|
|
*
|
|
* @return bool Whether support was removed.
|
|
*/
|
|
function remove_custom_background() {
|
|
if ( ! current_theme_supports( 'custom-background' ) )
|
|
return false;
|
|
|
|
$callback = get_theme_support( 'custom-background' );
|
|
remove_action( 'wp_head', $callback[0]['callback'] );
|
|
_remove_theme_support( 'custom-background' );
|
|
|
|
if ( is_admin() ) {
|
|
remove_action( 'admin_menu', array( &$GLOBALS['custom_background'], 'init' ) );
|
|
unset( $GLOBALS['custom_background'] );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Default custom background callback.
|
|
*
|
|
* @since 3.0.0
|
|
* @see add_custom_background()
|
|
* @access protected
|
|
*/
|
|
function _custom_background_cb() {
|
|
$background = get_background_image();
|
|
$color = get_background_color();
|
|
if ( ! $background && ! $color )
|
|
return;
|
|
|
|
$style = $color ? "background-color: #$color;" : '';
|
|
|
|
if ( $background ) {
|
|
$image = " background-image: url('$background');";
|
|
|
|
$repeat = get_theme_mod( 'background_repeat', 'repeat' );
|
|
if ( ! in_array( $repeat, array( 'no-repeat', 'repeat-x', 'repeat-y', 'repeat' ) ) )
|
|
$repeat = 'repeat';
|
|
$repeat = " background-repeat: $repeat;";
|
|
|
|
$position = get_theme_mod( 'background_position_x', 'left' );
|
|
if ( ! in_array( $position, array( 'center', 'right', 'left' ) ) )
|
|
$position = 'left';
|
|
$position = " background-position: top $position;";
|
|
|
|
$attachment = get_theme_mod( 'background_attachment', 'scroll' );
|
|
if ( ! in_array( $attachment, array( 'fixed', 'scroll' ) ) )
|
|
$attachment = 'scroll';
|
|
$attachment = " background-attachment: $attachment;";
|
|
|
|
$style .= $image . $repeat . $position . $attachment;
|
|
}
|
|
?>
|
|
<style type="text/css">
|
|
body.custom-background { <?php echo trim( $style ); ?> }
|
|
</style>
|
|
<?php
|
|
}
|
|
|
|
/**
|
|
* Add callback for custom TinyMCE editor stylesheets.
|
|
*
|
|
* The parameter $stylesheet is the name of the stylesheet, relative to
|
|
* the theme root. It also accepts an array of stylesheets.
|
|
* It is optional and defaults to 'editor-style.css'.
|
|
*
|
|
* Supports RTL stylesheets automatically by searching for the -rtl prefix, e.g.
|
|
* editor-style-rtl.css. If an array of stylesheets is passed to add_editor_style(),
|
|
* RTL is only added for the first stylesheet.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @param mixed $stylesheet Optional. Stylesheet name or array thereof, relative to theme root.
|
|
* Defaults to 'editor-style.css'
|
|
*/
|
|
function add_editor_style( $stylesheet = 'editor-style.css' ) {
|
|
|
|
add_theme_support( 'editor-style' );
|
|
|
|
if ( ! is_admin() )
|
|
return;
|
|
|
|
global $editor_styles;
|
|
$editor_styles = (array) $editor_styles;
|
|
$stylesheet = (array) $stylesheet;
|
|
if ( is_rtl() ) {
|
|
$rtl_stylesheet = str_replace('.css', '-rtl.css', $stylesheet[0]);
|
|
$stylesheet[] = $rtl_stylesheet;
|
|
}
|
|
|
|
$editor_styles = array_merge( $editor_styles, $stylesheet );
|
|
}
|
|
|
|
/**
|
|
* Removes all visual editor stylesheets.
|
|
*
|
|
* @since 3.1.0
|
|
*
|
|
* @return bool True on success, false if there were no stylesheets to remove.
|
|
*/
|
|
function remove_editor_styles() {
|
|
if ( ! current_theme_supports( 'editor-style' ) )
|
|
return false;
|
|
_remove_theme_support( 'editor-style' );
|
|
if ( is_admin() )
|
|
$GLOBALS['editor_styles'] = array();
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Allows a theme to register its support of a certain feature
|
|
*
|
|
* Must be called in the theme's functions.php file to work.
|
|
* If attached to a hook, it must be after_setup_theme.
|
|
* The init hook may be too late for some features.
|
|
*
|
|
* @since 2.9.0
|
|
* @param string $feature the feature being added
|
|
*/
|
|
function add_theme_support( $feature ) {
|
|
global $_wp_theme_features;
|
|
|
|
if ( func_num_args() == 1 )
|
|
$_wp_theme_features[$feature] = true;
|
|
else
|
|
$_wp_theme_features[$feature] = array_slice( func_get_args(), 1 );
|
|
|
|
if ( $feature == 'post-formats' && is_array( $_wp_theme_features[$feature][0] ) )
|
|
$_wp_theme_features[$feature][0] = array_intersect( $_wp_theme_features[$feature][0], array_keys( get_post_format_slugs() ) );
|
|
}
|
|
|
|
/**
|
|
* Gets the theme support arguments passed when registering that support
|
|
*
|
|
* @since 3.1
|
|
* @param string $feature the feature to check
|
|
* @return array The array of extra arguments
|
|
*/
|
|
function get_theme_support( $feature ) {
|
|
global $_wp_theme_features;
|
|
if ( !isset( $_wp_theme_features[$feature] ) )
|
|
return false;
|
|
else
|
|
return $_wp_theme_features[$feature];
|
|
}
|
|
|
|
/**
|
|
* Allows a theme to de-register its support of a certain feature
|
|
*
|
|
* Should be called in the theme's functions.php file. Generally would
|
|
* be used for child themes to override support from the parent theme.
|
|
*
|
|
* @since 3.0.0
|
|
* @see add_theme_support()
|
|
* @param string $feature the feature being added
|
|
* @return bool Whether feature was removed.
|
|
*/
|
|
function remove_theme_support( $feature ) {
|
|
// Blacklist: for internal registrations not used directly by themes.
|
|
if ( in_array( $feature, array( 'custom-background', 'custom-header', 'editor-style', 'widgets', 'menus' ) ) )
|
|
return false;
|
|
return _remove_theme_support( $feature );
|
|
}
|
|
|
|
/**
|
|
* Do not use. Removes theme support internally, ignorant of the blacklist.
|
|
*
|
|
* @access private
|
|
* @since 3.1.0
|
|
*/
|
|
function _remove_theme_support( $feature ) {
|
|
global $_wp_theme_features;
|
|
|
|
if ( ! isset( $_wp_theme_features[$feature] ) )
|
|
return false;
|
|
unset( $_wp_theme_features[$feature] );
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Checks a theme's support for a given feature
|
|
*
|
|
* @since 2.9.0
|
|
* @param string $feature the feature being checked
|
|
* @return boolean
|
|
*/
|
|
function current_theme_supports( $feature ) {
|
|
global $_wp_theme_features;
|
|
|
|
if ( !isset( $_wp_theme_features[$feature] ) )
|
|
return false;
|
|
|
|
// If no args passed then no extra checks need be performed
|
|
if ( func_num_args() <= 1 )
|
|
return true;
|
|
|
|
$args = array_slice( func_get_args(), 1 );
|
|
|
|
switch ( $feature ) {
|
|
case 'post-thumbnails':
|
|
// post-thumbnails can be registered for only certain content/post types by passing
|
|
// an array of types to add_theme_support(). If no array was passed, then
|
|
// any type is accepted
|
|
if ( true === $_wp_theme_features[$feature] ) // Registered for all types
|
|
return true;
|
|
$content_type = $args[0];
|
|
return in_array( $content_type, $_wp_theme_features[$feature][0] );
|
|
break;
|
|
|
|
case 'post-formats':
|
|
// specific post formats can be registered by passing an array of types to
|
|
// add_theme_support()
|
|
$post_format = $args[0];
|
|
return in_array( $post_format, $_wp_theme_features[$feature][0] );
|
|
break;
|
|
|
|
case 'custom-header':
|
|
// specific custom header capabilities can be registered by passing
|
|
// an array to add_theme_support()
|
|
$header_support = $args[0];
|
|
return ( isset( $_wp_theme_features[$feature][0][$header_support] ) && $_wp_theme_features[$feature][0][$header_support] );
|
|
break;
|
|
}
|
|
|
|
return apply_filters('current_theme_supports-' . $feature, true, $args, $_wp_theme_features[$feature]);
|
|
}
|
|
|
|
/**
|
|
* Checks a theme's support for a given feature before loading the functions which implement it.
|
|
*
|
|
* @since 2.9.0
|
|
* @param string $feature the feature being checked
|
|
* @param string $include the file containing the functions that implement the feature
|
|
*/
|
|
function require_if_theme_supports( $feature, $include) {
|
|
if ( current_theme_supports( $feature ) )
|
|
require ( $include );
|
|
}
|
|
|
|
/**
|
|
* Checks an attachment being deleted to see if it's a header or background image.
|
|
*
|
|
* If true it removes the theme modification which would be pointing at the deleted
|
|
* attachment
|
|
*
|
|
* @access private
|
|
* @since 3.0.0
|
|
* @param int $id the attachment id
|
|
*/
|
|
function _delete_attachment_theme_mod( $id ) {
|
|
$attachment_image = wp_get_attachment_url( $id );
|
|
$header_image = get_header_image();
|
|
$background_image = get_background_image();
|
|
|
|
if ( $header_image && $header_image == $attachment_image )
|
|
remove_theme_mod( 'header_image' );
|
|
|
|
if ( $background_image && $background_image == $attachment_image )
|
|
remove_theme_mod( 'background_image' );
|
|
}
|
|
|
|
add_action( 'delete_attachment', '_delete_attachment_theme_mod' );
|
|
|
|
/**
|
|
* Checks if a theme has been changed and runs 'after_switch_theme' hook on the next WP load
|
|
*
|
|
* @since 3.3.0
|
|
*/
|
|
function check_theme_switched() {
|
|
if ( false !== ( $old_theme = get_option( 'theme_switched' ) ) && !empty( $old_theme ) ) {
|
|
do_action( 'after_switch_theme', $old_theme );
|
|
update_option( 'theme_switched', false );
|
|
}
|
|
}
|
|
|
|
function wp_customize_load() {
|
|
// Load on themes.php or ?customize=on
|
|
if ( ! ( isset( $_REQUEST['customize'] ) && 'on' == $_REQUEST['customize'] ) && 'themes.php' != $GLOBALS['pagenow'] )
|
|
return;
|
|
|
|
require( ABSPATH . WPINC . '/class-wp-customize.php' );
|
|
// Init Customize class
|
|
// @todo Dependency injection instead
|
|
$GLOBALS['customize'] = new WP_Customize;
|
|
}
|
|
add_action( 'plugins_loaded', 'wp_customize_load' );
|