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b5820d2934
git-svn-id: http://svn.automattic.com/wordpress/trunk@14858 1a063a9b-81f0-0310-95a4-ce76da25c4cd
1742 lines
49 KiB
PHP
1742 lines
49 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 Template
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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'], __( '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 list of themes with theme data in theme directory.
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*
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* The theme is broken, if it doesn't have a parent theme and is missing either
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* style.css and, or index.php. If the theme has a parent theme then it is
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* broken, if it is missing style.css; index.php is optional. The broken theme
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* list is saved in the {@link $wp_broken_themes} global, which is displayed on
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* the theme list in the administration panels.
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*
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* @since 1.5.0
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* @global array $wp_broken_themes Stores the broken themes.
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* @global array $wp_themes Stores the working themes.
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*
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* @return array Theme list with theme data.
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*/
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function get_themes() {
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global $wp_themes, $wp_broken_themes;
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if ( isset($wp_themes) )
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return $wp_themes;
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/* Register the default root as a theme directory */
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register_theme_directory( get_theme_root() );
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if ( !$theme_files = search_theme_directories() )
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return false;
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asort( $theme_files );
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$wp_themes = array();
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foreach ( (array) $theme_files as $theme_file ) {
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$theme_root = $theme_file['theme_root'];
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$theme_file = $theme_file['theme_file'];
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if ( !is_readable("$theme_root/$theme_file") ) {
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$wp_broken_themes[$theme_file] = array('Name' => $theme_file, 'Title' => $theme_file, 'Description' => __('File not readable.'));
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continue;
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}
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$theme_data = get_theme_data("$theme_root/$theme_file");
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$name = $theme_data['Name'];
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$title = $theme_data['Title'];
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$description = wptexturize($theme_data['Description']);
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$version = $theme_data['Version'];
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$author = $theme_data['Author'];
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$template = $theme_data['Template'];
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$stylesheet = dirname($theme_file);
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$screenshot = false;
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foreach ( array('png', 'gif', 'jpg', 'jpeg') as $ext ) {
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if (file_exists("$theme_root/$stylesheet/screenshot.$ext")) {
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$screenshot = "screenshot.$ext";
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break;
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}
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}
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if ( empty($name) ) {
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$name = dirname($theme_file);
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$title = $name;
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}
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$parent_template = $template;
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if ( empty($template) ) {
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if ( file_exists("$theme_root/$stylesheet/index.php") )
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$template = $stylesheet;
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else
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continue;
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}
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$template = trim( $template );
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if ( !file_exists("$theme_root/$template/index.php") ) {
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$parent_dir = dirname(dirname($theme_file));
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if ( file_exists("$theme_root/$parent_dir/$template/index.php") ) {
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$template = "$parent_dir/$template";
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$template_directory = "$theme_root/$template";
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} else {
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/**
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* The parent theme doesn't exist in the current theme's folder or sub folder
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* so lets use the theme root for the parent template.
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*/
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if ( isset($theme_files[$template]) && file_exists( $theme_files[$template]['theme_root'] . "/$template/index.php" ) ) {
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$template_directory = $theme_files[$template]['theme_root'] . "/$template";
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} else {
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if ( empty( $parent_template) )
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$wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => __('Template is missing.'), 'error' => 'no_template');
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else
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$wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => sprintf( __('The parent theme is missing. Please install the "%s" parent theme.'), $parent_template ), 'error' => 'no_parent', 'parent' => $parent_template );
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continue;
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}
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}
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} else {
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$template_directory = trim( $theme_root . '/' . $template );
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}
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$stylesheet_files = array();
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$template_files = array();
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$stylesheet_dir = @ dir("$theme_root/$stylesheet");
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if ( $stylesheet_dir ) {
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while ( ($file = $stylesheet_dir->read()) !== false ) {
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if ( !preg_match('|^\.+$|', $file) ) {
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if ( preg_match('|\.css$|', $file) )
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$stylesheet_files[] = "$theme_root/$stylesheet/$file";
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elseif ( preg_match('|\.php$|', $file) )
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$template_files[] = "$theme_root/$stylesheet/$file";
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}
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}
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@ $stylesheet_dir->close();
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}
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$template_dir = @ dir("$template_directory");
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if ( $template_dir ) {
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while ( ($file = $template_dir->read()) !== false ) {
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if ( preg_match('|^\.+$|', $file) )
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continue;
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if ( preg_match('|\.php$|', $file) ) {
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$template_files[] = "$template_directory/$file";
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} elseif ( is_dir("$template_directory/$file") ) {
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$template_subdir = @ dir("$template_directory/$file");
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if ( !$template_subdir )
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continue;
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while ( ($subfile = $template_subdir->read()) !== false ) {
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if ( preg_match('|^\.+$|', $subfile) )
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continue;
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if ( preg_match('|\.php$|', $subfile) )
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$template_files[] = "$template_directory/$file/$subfile";
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}
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@ $template_subdir->close();
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}
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}
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@ $template_dir->close();
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}
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//Make unique and remove duplicates when stylesheet and template are the same i.e. most themes
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$template_files = array_unique($template_files);
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$stylesheet_files = array_unique($stylesheet_files);
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$template_dir = dirname($template_files[0]);
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$stylesheet_dir = dirname($stylesheet_files[0]);
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if ( empty($template_dir) )
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$template_dir = '/';
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if ( empty($stylesheet_dir) )
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$stylesheet_dir = '/';
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// Check for theme name collision. This occurs if a theme is copied to
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// a new theme directory and the theme header is not updated. Whichever
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// theme is first keeps the name. Subsequent themes get a suffix applied.
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// The Default and Classic themes always trump their pretenders.
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if ( isset($wp_themes[$name]) ) {
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if ( ('WordPress Default' == $name || 'WordPress Classic' == $name) &&
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('default' == $stylesheet || 'classic' == $stylesheet) ) {
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// If another theme has claimed to be one of our default themes, move
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// them aside.
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$suffix = $wp_themes[$name]['Stylesheet'];
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$new_name = "$name/$suffix";
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$wp_themes[$new_name] = $wp_themes[$name];
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$wp_themes[$new_name]['Name'] = $new_name;
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} else {
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$name = "$name/$stylesheet";
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}
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}
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$theme_roots[$stylesheet] = str_replace( WP_CONTENT_DIR, '', $theme_root );
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$wp_themes[$name] = array(
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'Name' => $name,
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'Title' => $title,
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'Description' => $description,
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'Author' => $author,
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'Author Name' => $theme_data['AuthorName'],
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'Author URI' => $theme_data['AuthorURI'],
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'Version' => $version,
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'Template' => $template,
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'Stylesheet' => $stylesheet,
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'Template Files' => $template_files,
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'Stylesheet Files' => $stylesheet_files,
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'Template Dir' => $template_dir,
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'Stylesheet Dir' => $stylesheet_dir,
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'Status' => $theme_data['Status'],
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'Screenshot' => $screenshot,
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'Tags' => $theme_data['Tags'],
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'Theme Root' => $theme_root,
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'Theme Root URI' => str_replace( WP_CONTENT_DIR, content_url(), $theme_root ),
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);
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}
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unset($theme_files);
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/* Store theme roots in the DB */
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if ( get_site_transient( 'theme_roots' ) != $theme_roots )
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set_site_transient( 'theme_roots', $theme_roots, 7200 ); // cache for two hours
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unset($theme_roots);
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/* Resolve theme dependencies. */
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$theme_names = array_keys( $wp_themes );
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foreach ( (array) $theme_names as $theme_name ) {
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$wp_themes[$theme_name]['Parent Theme'] = '';
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if ( $wp_themes[$theme_name]['Stylesheet'] != $wp_themes[$theme_name]['Template'] ) {
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foreach ( (array) $theme_names as $parent_theme_name ) {
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if ( ($wp_themes[$parent_theme_name]['Stylesheet'] == $wp_themes[$parent_theme_name]['Template']) && ($wp_themes[$parent_theme_name]['Template'] == $wp_themes[$theme_name]['Template']) ) {
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$wp_themes[$theme_name]['Parent Theme'] = $wp_themes[$parent_theme_name]['Name'];
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break;
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}
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}
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}
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}
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return $wp_themes;
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}
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/**
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* Retrieve theme roots.
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*
|
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* @since 2.9.0
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*
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* @return array Theme roots
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*/
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function get_theme_roots() {
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$theme_roots = get_site_transient( 'theme_roots' );
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if ( false === $theme_roots ) {
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get_themes();
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$theme_roots = get_site_transient( 'theme_roots' ); // this is set in get_theme()
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}
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return $theme_roots;
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}
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|
|
/**
|
|
* Retrieve theme data.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @param string $theme Theme name.
|
|
* @return array|null Null, if theme name does not exist. Theme data, if exists.
|
|
*/
|
|
function get_theme($theme) {
|
|
$themes = get_themes();
|
|
|
|
if ( array_key_exists($theme, $themes) )
|
|
return $themes[$theme];
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Retrieve current theme display name.
|
|
*
|
|
* If the 'current_theme' option has already been set, then it will be returned
|
|
* instead. If it is not set, then each theme will be iterated over until both
|
|
* the current stylesheet and current template name.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_current_theme() {
|
|
if ( $theme = get_option('current_theme') )
|
|
return $theme;
|
|
|
|
$themes = get_themes();
|
|
$theme_names = array_keys($themes);
|
|
$current_template = get_option('template');
|
|
$current_stylesheet = get_option('stylesheet');
|
|
$current_theme = 'WordPress Default';
|
|
|
|
if ( $themes ) {
|
|
foreach ( (array) $theme_names as $theme_name ) {
|
|
if ( $themes[$theme_name]['Stylesheet'] == $current_stylesheet &&
|
|
$themes[$theme_name]['Template'] == $current_template ) {
|
|
$current_theme = $themes[$theme_name]['Name'];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
update_option('current_theme', $current_theme);
|
|
|
|
return $current_theme;
|
|
}
|
|
|
|
/**
|
|
* Register a directory that contains themes.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @param string $directory Either the full filesystem path to a theme folder or a folder within WP_CONTENT_DIR
|
|
* @return bool
|
|
*/
|
|
function register_theme_directory( $directory) {
|
|
global $wp_theme_directories;
|
|
|
|
/* If this folder does not exist, return and do not register */
|
|
if ( !file_exists( $directory ) )
|
|
/* Try prepending as the theme directory could be relative to the content directory */
|
|
$registered_directory = WP_CONTENT_DIR . '/' . $directory;
|
|
else
|
|
$registered_directory = $directory;
|
|
|
|
/* If this folder does not exist, return and do not register */
|
|
if ( !file_exists( $registered_directory ) )
|
|
return false;
|
|
|
|
$wp_theme_directories[] = $registered_directory;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Search all registered theme directories for complete and valid themes.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @return array Valid themes found
|
|
*/
|
|
function search_theme_directories() {
|
|
global $wp_theme_directories, $wp_broken_themes;
|
|
if ( empty( $wp_theme_directories ) )
|
|
return false;
|
|
|
|
$theme_files = array();
|
|
$wp_broken_themes = array();
|
|
|
|
/* Loop the registered theme directories and extract all themes */
|
|
foreach ( (array) $wp_theme_directories as $theme_root ) {
|
|
$theme_loc = $theme_root;
|
|
|
|
/* We don't want to replace all forward slashes, see Trac #4541 */
|
|
if ( '/' != WP_CONTENT_DIR )
|
|
$theme_loc = str_replace(WP_CONTENT_DIR, '', $theme_root);
|
|
|
|
/* Files in the root of the current theme directory and one subdir down */
|
|
$themes_dir = @ opendir($theme_root);
|
|
|
|
if ( !$themes_dir )
|
|
return false;
|
|
|
|
while ( ($theme_dir = readdir($themes_dir)) !== false ) {
|
|
if ( is_dir($theme_root . '/' . $theme_dir) && is_readable($theme_root . '/' . $theme_dir) ) {
|
|
if ( $theme_dir{0} == '.' || $theme_dir == 'CVS' )
|
|
continue;
|
|
|
|
$stylish_dir = @opendir($theme_root . '/' . $theme_dir);
|
|
$found_stylesheet = false;
|
|
|
|
while ( ($theme_file = readdir($stylish_dir)) !== false ) {
|
|
if ( $theme_file == 'style.css' ) {
|
|
$theme_files[$theme_dir] = array( 'theme_file' => $theme_dir . '/' . $theme_file, 'theme_root' => $theme_root );
|
|
$found_stylesheet = true;
|
|
break;
|
|
}
|
|
}
|
|
@closedir($stylish_dir);
|
|
|
|
if ( !$found_stylesheet ) { // look for themes in that dir
|
|
$subdir = "$theme_root/$theme_dir";
|
|
$subdir_name = $theme_dir;
|
|
$theme_subdirs = @opendir( $subdir );
|
|
|
|
$found_subdir_themes = false;
|
|
while ( ($theme_subdir = readdir($theme_subdirs)) !== false ) {
|
|
if ( is_dir( $subdir . '/' . $theme_subdir) && is_readable($subdir . '/' . $theme_subdir) ) {
|
|
if ( $theme_subdir{0} == '.' || $theme_subdir == 'CVS' )
|
|
continue;
|
|
|
|
$stylish_dir = @opendir($subdir . '/' . $theme_subdir);
|
|
$found_stylesheet = false;
|
|
|
|
while ( ($theme_file = readdir($stylish_dir)) !== false ) {
|
|
if ( $theme_file == 'style.css' ) {
|
|
$theme_files["$theme_dir/$theme_subdir"] = array( 'theme_file' => $subdir_name . '/' . $theme_subdir . '/' . $theme_file, 'theme_root' => $theme_root );
|
|
$found_stylesheet = true;
|
|
$found_subdir_themes = true;
|
|
break;
|
|
}
|
|
}
|
|
@closedir($stylish_dir);
|
|
}
|
|
}
|
|
@closedir($theme_subdir);
|
|
if ( !$found_subdir_themes )
|
|
$wp_broken_themes[$theme_dir] = array('Name' => $theme_dir, 'Title' => $theme_dir, 'Description' => __('Stylesheet is missing.'));
|
|
}
|
|
}
|
|
}
|
|
if ( is_dir( $theme_dir ) )
|
|
@closedir( $theme_dir );
|
|
}
|
|
return $theme_files;
|
|
}
|
|
|
|
/**
|
|
* Retrieve path to themes directory.
|
|
*
|
|
* Does not have trailing slash.
|
|
*
|
|
* @since 1.5.0
|
|
* @param $stylesheet_or_template The stylesheet or template name of the theme
|
|
* @uses apply_filters() Calls 'theme_root' filter on path.
|
|
*
|
|
* @return string Theme path.
|
|
*/
|
|
function get_theme_root( $stylesheet_or_template = false ) {
|
|
if ($stylesheet_or_template) {
|
|
$theme_roots = get_theme_roots();
|
|
|
|
if ( ! empty( $theme_roots[$stylesheet_or_template] ) )
|
|
$theme_root = WP_CONTENT_DIR . $theme_roots[$stylesheet_or_template];
|
|
else
|
|
$theme_root = WP_CONTENT_DIR . '/themes';
|
|
} 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 $stylesheet_or_template The stylesheet or template name of the theme
|
|
*
|
|
* @return string Themes URI.
|
|
*/
|
|
function get_theme_root_uri( $stylesheet_or_template = false ) {
|
|
$theme_roots = get_theme_roots();
|
|
|
|
if ( isset( $theme_roots[$stylesheet_or_template] ) && $theme_roots[$stylesheet_or_template] )
|
|
$theme_root_uri = content_url( $theme_roots[$stylesheet_or_template] );
|
|
else
|
|
$theme_root_uri = content_url( 'themes' );
|
|
|
|
return apply_filters( 'theme_root_uri', $theme_root_uri, get_option('siteurl'), $stylesheet_or_template );
|
|
}
|
|
|
|
/**
|
|
* Retrieve path to file without the use of extension.
|
|
*
|
|
* Used to quickly retrieve the path of file without including the file
|
|
* extension. It will also check the parent template, if the file exists, with
|
|
* the use of {@link locate_template()}. Allows for more generic file location
|
|
* without the use of the other get_*_template() functions.
|
|
*
|
|
* Can be used with include() or require() to retrieve path.
|
|
* <code>
|
|
* if( '' != get_query_template( '404' ) )
|
|
* include( get_query_template( '404' ) );
|
|
* </code>
|
|
* or the same can be accomplished with
|
|
* <code>
|
|
* if( '' != get_404_template() )
|
|
* include( get_404_template() );
|
|
* </code>
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @param string $type Filename without extension.
|
|
* @return string Full path to file.
|
|
*/
|
|
function get_query_template($type) {
|
|
$type = preg_replace( '|[^a-z0-9-]+|', '', $type );
|
|
return apply_filters("{$type}_template", locate_template(array("{$type}.php")));
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of index template in current or parent template.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_index_template() {
|
|
return get_query_template('index');
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of 404 template in current or parent template.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_404_template() {
|
|
return get_query_template('404');
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of archive template in current or parent template.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_archive_template() {
|
|
return get_query_template('archive');
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of author template in current or parent template.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_author_template() {
|
|
$author_id = absint( get_query_var( 'author' ) );
|
|
$author = get_user_by( 'id', $author_id );
|
|
$author = $author->user_nicename;
|
|
|
|
$templates = array();
|
|
|
|
if ( $author )
|
|
$templates[] = "author-{$author}.php";
|
|
if ( $author_id )
|
|
$templates[] = "author-{$author_id}.php";
|
|
$templates[] = 'author.php';
|
|
|
|
$template = locate_template( $templates );
|
|
return apply_filters( 'author_template', $template );
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of category template in current or parent template.
|
|
*
|
|
* Works by first retrieving the current slug for example 'category-default.php' and then
|
|
* trying category ID, for example 'category-1.php' and will finally fallback to category.php
|
|
* template, if those files don't exist.
|
|
*
|
|
* @since 1.5.0
|
|
* @uses apply_filters() Calls 'category_template' on file path of category template.
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_category_template() {
|
|
$cat_ID = absint( get_query_var('cat') );
|
|
$category = get_category( $cat_ID );
|
|
|
|
$templates = array();
|
|
|
|
if ( !is_wp_error($category) )
|
|
$templates[] = "category-{$category->slug}.php";
|
|
|
|
$templates[] = "category-$cat_ID.php";
|
|
$templates[] = "category.php";
|
|
|
|
$template = locate_template($templates);
|
|
return apply_filters('category_template', $template);
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of tag template in current or parent template.
|
|
*
|
|
* Works by first retrieving the current tag name, for example 'tag-wordpress.php' and then
|
|
* trying tag ID, for example 'tag-1.php' and will finally fallback to tag.php
|
|
* template, if those files don't exist.
|
|
*
|
|
* @since 2.3.0
|
|
* @uses apply_filters() Calls 'tag_template' on file path of tag template.
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_tag_template() {
|
|
$tag_id = absint( get_query_var('tag_id') );
|
|
$tag_name = get_query_var('tag');
|
|
|
|
$templates = array();
|
|
|
|
if ( $tag_name )
|
|
$templates[] = "tag-$tag_name.php";
|
|
if ( $tag_id )
|
|
$templates[] = "tag-$tag_id.php";
|
|
$templates[] = "tag.php";
|
|
|
|
$template = locate_template($templates);
|
|
return apply_filters('tag_template', $template);
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of taxonomy template in current or parent template.
|
|
*
|
|
* Retrieves the taxonomy and term, if term is available. The template is
|
|
* prepended with 'taxonomy-' and followed by both the taxonomy string and
|
|
* the taxonomy string followed by a dash and then followed by the term.
|
|
*
|
|
* The taxonomy and term template is checked and used first, if it exists.
|
|
* Second, just the taxonomy template is checked, and then finally, taxonomy.php
|
|
* template is used. If none of the files exist, then it will fall back on to
|
|
* index.php.
|
|
*
|
|
* @since unknown (2.6.0 most likely)
|
|
* @uses apply_filters() Calls 'taxonomy_template' filter on found path.
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_taxonomy_template() {
|
|
$taxonomy = get_query_var('taxonomy');
|
|
$term = get_query_var('term');
|
|
|
|
$templates = array();
|
|
if ( $taxonomy && $term )
|
|
$templates[] = "taxonomy-$taxonomy-$term.php";
|
|
if ( $taxonomy )
|
|
$templates[] = "taxonomy-$taxonomy.php";
|
|
|
|
$templates[] = "taxonomy.php";
|
|
|
|
$template = locate_template($templates);
|
|
return apply_filters('taxonomy_template', $template);
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of date template in current or parent template.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_date_template() {
|
|
return get_query_template('date');
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of home template in current or parent template.
|
|
*
|
|
* This is the template used for the page containing the blog posts
|
|
*
|
|
* Attempts to locate 'home.php' first before falling back to 'index.php'.
|
|
*
|
|
* @since 1.5.0
|
|
* @uses apply_filters() Calls 'home_template' on file path of home template.
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_home_template() {
|
|
$template = locate_template(array('home.php', 'index.php'));
|
|
return apply_filters('home_template', $template);
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of front-page template in current or parent template.
|
|
*
|
|
* Looks for 'front-page.php'.
|
|
*
|
|
* @since 3.0.0
|
|
* @uses apply_filters() Calls 'front_page_template' on file path of template.
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_front_page_template() {
|
|
return apply_filters( 'front_page_template', locate_template( array('front-page.php') ) );
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of page template in current or parent template.
|
|
*
|
|
* Will first look for the specifically assigned page template
|
|
* The will search for 'page-{slug}.php' followed by 'page-id.php'
|
|
* and finally 'page.php'
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_page_template() {
|
|
global $wp_query;
|
|
|
|
$id = (int) $wp_query->get_queried_object_id();
|
|
$template = get_post_meta($id, '_wp_page_template', true);
|
|
$pagename = get_query_var('pagename');
|
|
|
|
if ( !$pagename && $id > 0 ) {
|
|
// If a static page is set as the front page, $pagename will not be set. Retrieve it from the queried object
|
|
$post = $wp_query->get_queried_object();
|
|
$pagename = $post->post_name;
|
|
}
|
|
|
|
if ( 'default' == $template )
|
|
$template = '';
|
|
|
|
$templates = array();
|
|
if ( !empty($template) && !validate_file($template) )
|
|
$templates[] = $template;
|
|
if ( $pagename )
|
|
$templates[] = "page-$pagename.php";
|
|
if ( $id )
|
|
$templates[] = "page-$id.php";
|
|
$templates[] = "page.php";
|
|
|
|
return apply_filters('page_template', locate_template($templates));
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of paged template in current or parent template.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_paged_template() {
|
|
return get_query_template('paged');
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of search template in current or parent template.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_search_template() {
|
|
return get_query_template('search');
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of single template in current or parent template.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_single_template() {
|
|
global $wp_query;
|
|
|
|
$object = $wp_query->get_queried_object();
|
|
$templates = array('single-' . $object->post_type . '.php', 'single.php');
|
|
return apply_filters('single_template', locate_template($templates));
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of attachment template in current or parent template.
|
|
*
|
|
* The attachment path first checks if the first part of the mime type exists.
|
|
* The second check is for the second part of the mime type. The last check is
|
|
* for both types separated by an underscore. If neither are found then the file
|
|
* 'attachment.php' is checked and returned.
|
|
*
|
|
* Some examples for the 'text/plain' mime type are 'text.php', 'plain.php', and
|
|
* finally 'text_plain.php'.
|
|
*
|
|
* @since 2.0.0
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_attachment_template() {
|
|
global $posts;
|
|
$type = explode('/', $posts[0]->post_mime_type);
|
|
if ( $template = get_query_template($type[0]) )
|
|
return $template;
|
|
elseif ( $template = get_query_template($type[1]) )
|
|
return $template;
|
|
elseif ( $template = get_query_template("$type[0]_$type[1]") )
|
|
return $template;
|
|
else
|
|
return get_query_template('attachment');
|
|
}
|
|
|
|
/**
|
|
* Retrieve path of comment popup template in current or parent template.
|
|
*
|
|
* Checks for comment popup template in current template, if it exists or in the
|
|
* parent template.
|
|
*
|
|
* @since 1.5.0
|
|
* @uses apply_filters() Calls 'comments_popup_template' filter on path.
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_comments_popup_template() {
|
|
$template = locate_template(array("comments-popup.php"));
|
|
|
|
// Backward compat code will be removed in a future release
|
|
if ('' == $template)
|
|
$template = WPINC . '/theme-compat/comments-popup.php';
|
|
|
|
return apply_filters('comments_popup_template', $template);
|
|
}
|
|
|
|
/**
|
|
* Retrieve the name of the highest priority template file that exists.
|
|
*
|
|
* Searches in the STYLESHEETPATH before TEMPLATEPATH so that themes which
|
|
* inherit from a parent theme can just overload one file.
|
|
*
|
|
* @since 2.7.0
|
|
*
|
|
* @param array $template_names Array of template files to search for in priority order.
|
|
* @param bool $load If true the template file will be loaded if it is found.
|
|
* @param bool $require_once Whether to require_once or require. Default true. Has no effect if $load is false.
|
|
* @return string The template filename if one is located.
|
|
*/
|
|
function locate_template($template_names, $load = false, $require_once = true ) {
|
|
if ( !is_array($template_names) )
|
|
return '';
|
|
|
|
$located = '';
|
|
foreach ( $template_names as $template_name ) {
|
|
if ( !$template_name )
|
|
continue;
|
|
if ( file_exists(STYLESHEETPATH . '/' . $template_name)) {
|
|
$located = STYLESHEETPATH . '/' . $template_name;
|
|
break;
|
|
} else if ( file_exists(TEMPLATEPATH . '/' . $template_name) ) {
|
|
$located = TEMPLATEPATH . '/' . $template_name;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( $load && '' != $located )
|
|
load_template( $located, $require_once );
|
|
|
|
return $located;
|
|
}
|
|
|
|
/**
|
|
* Require the template file with WordPress environment.
|
|
*
|
|
* The globals are set up for the template file to ensure that the WordPress
|
|
* environment is available from within the function. The query variables are
|
|
* also available.
|
|
*
|
|
* @since 1.5.0
|
|
*
|
|
* @param string $_template_file Path to template file.
|
|
* @param bool $require_once Whether to require_once or require. Default true.
|
|
*/
|
|
function load_template( $_template_file, $require_once = true ) {
|
|
global $posts, $post, $wp_did_header, $wp_did_template_redirect, $wp_query, $wp_rewrite, $wpdb, $wp_version, $wp, $id, $comment, $user_ID;
|
|
|
|
if ( is_array( $wp_query->query_vars ) )
|
|
extract( $wp_query->query_vars, EXTR_SKIP );
|
|
|
|
if ( $require_once )
|
|
require_once( $_template_file );
|
|
else
|
|
require( $_template_file );
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
$_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_mods_' . get_current_theme(), '__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'] ), $matches[3] );
|
|
if ( 0 === strpos($link, 'preview=1') )
|
|
$link = "?$link";
|
|
return $matches[1] . esc_attr( $link ) . $matches[4];
|
|
}
|
|
|
|
/**
|
|
* Switches current theme to new template and stylesheet names.
|
|
*
|
|
* @since unknown
|
|
* @uses do_action() Calls 'switch_theme' action on updated theme display name.
|
|
*
|
|
* @param string $template Template name
|
|
* @param string $stylesheet Stylesheet name.
|
|
*/
|
|
function switch_theme($template, $stylesheet) {
|
|
update_option('template', $template);
|
|
update_option('stylesheet', $stylesheet);
|
|
delete_option('current_theme');
|
|
$theme = get_current_theme();
|
|
do_action('switch_theme', $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;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
$theme = get_current_theme();
|
|
|
|
$mods = get_option( "mods_$theme" );
|
|
|
|
if ( isset($mods[$name]) )
|
|
return apply_filters( "theme_mod_$name", $mods[$name] );
|
|
|
|
return apply_filters( "theme_mod_$name", sprintf($default, get_template_directory_uri(), get_stylesheet_directory_uri()) );
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
$theme = get_current_theme();
|
|
|
|
$mods = get_option("mods_$theme");
|
|
|
|
$mods[$name] = $value;
|
|
|
|
update_option("mods_$theme", $mods);
|
|
wp_cache_delete("mods_$theme", 'options');
|
|
}
|
|
|
|
/**
|
|
* 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 ) {
|
|
$theme = get_current_theme();
|
|
|
|
$mods = get_option("mods_$theme");
|
|
|
|
if ( !isset($mods[$name]) )
|
|
return;
|
|
|
|
unset($mods[$name]);
|
|
|
|
if ( empty($mods) )
|
|
return remove_theme_mods();
|
|
|
|
update_option("mods_$theme", $mods);
|
|
wp_cache_delete("mods_$theme", 'options');
|
|
}
|
|
|
|
/**
|
|
* Remove theme modifications option for current theme.
|
|
*
|
|
* @since 2.1.0
|
|
*/
|
|
function remove_theme_mods() {
|
|
$theme = get_current_theme();
|
|
|
|
delete_option("mods_$theme");
|
|
}
|
|
|
|
/**
|
|
* 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 : '';
|
|
|
|
return get_theme_mod('header_image', $default);
|
|
}
|
|
|
|
/**
|
|
* Display header image path.
|
|
*
|
|
* @since 2.1.0
|
|
*/
|
|
function header_image() {
|
|
echo get_header_image();
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
|
|
add_theme_support( 'custom-header' );
|
|
|
|
if ( ! is_admin() )
|
|
return;
|
|
require_once(ABSPATH . 'wp-admin/custom-header.php');
|
|
$GLOBALS['custom_image_header'] =& new Custom_Image_Header($admin_header_callback, $admin_image_div_callback);
|
|
add_action('admin_menu', array(&$GLOBALS['custom_image_header'], 'init'));
|
|
}
|
|
|
|
/**
|
|
* 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 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' );
|
|
|
|
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'));
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
switch ( get_theme_mod('background_repeat', 'repeat') ) {
|
|
case 'no-repeat':
|
|
$repeat = 'background-repeat: no-repeat;';
|
|
break;
|
|
case 'repeat-x':
|
|
$repeat = 'background-repeat: repeat-x;';
|
|
break;
|
|
case 'repeat-y':
|
|
$repeat = 'background-repeat: repeat-y;';
|
|
break;
|
|
default:
|
|
$repeat = 'background-repeat: repeat;';
|
|
}
|
|
|
|
switch ( get_theme_mod('background_position_x', 'left') ) {
|
|
case 'center':
|
|
$position = 'background-position: top center;';
|
|
break;
|
|
case 'right':
|
|
$position = 'background-position: top right;';
|
|
break;
|
|
default:
|
|
$position = 'background-position: top left;';
|
|
}
|
|
|
|
if ( 'scroll' == get_theme_mod('background_attachment', 'fixed') )
|
|
$attachment = 'background-attachment: scroll;';
|
|
else
|
|
$attachment = 'background-attachment: fixed;';
|
|
|
|
if ( !empty($background ) )
|
|
$image = "background-image: url('$background');";
|
|
else
|
|
$image = '';
|
|
|
|
if ( !empty($color) )
|
|
$color = "background-color: #$color;";
|
|
else
|
|
$color = '';
|
|
?>
|
|
<style type="text/css">
|
|
body {
|
|
<?php echo $image; ?>
|
|
<?php echo $color; ?>
|
|
<?php echo $repeat; ?>
|
|
<?php echo $position; ?>
|
|
<?php echo $attachment; ?>
|
|
}
|
|
</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'.
|
|
*
|
|
* @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 );
|
|
}
|
|
|
|
/**
|
|
* 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 );
|
|
}
|
|
|
|
/**
|
|
* 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' ) ) )
|
|
return false;
|
|
|
|
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 );
|
|
|
|
// @todo Allow pluggable arg checking
|
|
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 = $args[0];
|
|
if ( in_array($content_type, $_wp_theme_features[$feature][0]) )
|
|
return true;
|
|
else
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* 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' );
|
|
|
|
?>
|