Wordpress/wp-includes/theme.php
Andrew Nacin 97adddcaf7 Always return an absolute path in get_raw_theme_root() and get_theme_roots().
These functions were changed in [15641] to avoid any calculations when only one theme directory is registered. However, the short-circuit ended up being relative to WP_CONTENT_DIR, rather than absolute. This broke situations where theme roots are outside the content directory (technically allowed), and made return values inconsistent, as when multiple roots were registered, absolute paths were always returned.

fixes #17597. see #20103. see #14911.



git-svn-id: https://develop.svn.wordpress.org/trunk@20001 602fd350-edb4-49c9-b593-d223f7449a82
2012-02-28 01:28:56 +00:00

2093 lines
60 KiB
PHP

<?php
/**
* Theme, template, and stylesheet functions.
*
* @package WordPress
* @subpackage Template
*/
/**
* Whether a child theme is in use.
*
* @since 3.0.0
*
* @return bool true if a child theme is in use, false otherwise.
**/
function is_child_theme() {
return ( TEMPLATEPATH !== STYLESHEETPATH );
}
/**
* Retrieve name of the current stylesheet.
*
* The theme name that the administrator has currently set the front end theme
* as.
*
* For all extensive purposes, the template name and the stylesheet name are
* going to be the same for most cases.
*
* @since 1.5.0
* @uses apply_filters() Calls 'stylesheet' filter on stylesheet name.
*
* @return string Stylesheet name.
*/
function get_stylesheet() {
return apply_filters('stylesheet', get_option('stylesheet'));
}
/**
* Retrieve stylesheet directory path for current theme.
*
* @since 1.5.0
* @uses apply_filters() Calls 'stylesheet_directory' filter on stylesheet directory and theme name.
*
* @return string Path to current theme directory.
*/
function get_stylesheet_directory() {
$stylesheet = get_stylesheet();
$theme_root = get_theme_root( $stylesheet );
$stylesheet_dir = "$theme_root/$stylesheet";
return apply_filters( 'stylesheet_directory', $stylesheet_dir, $stylesheet, $theme_root );
}
/**
* Retrieve stylesheet directory URI.
*
* @since 1.5.0
*
* @return string
*/
function get_stylesheet_directory_uri() {
$stylesheet = get_stylesheet();
$theme_root_uri = get_theme_root_uri( $stylesheet );
$stylesheet_dir_uri = "$theme_root_uri/$stylesheet";
return apply_filters( 'stylesheet_directory_uri', $stylesheet_dir_uri, $stylesheet, $theme_root_uri );
}
/**
* Retrieve URI of current theme stylesheet.
*
* The stylesheet file name is 'style.css' which is appended to {@link
* get_stylesheet_directory_uri() stylesheet directory URI} path.
*
* @since 1.5.0
* @uses apply_filters() Calls 'stylesheet_uri' filter on stylesheet URI path and stylesheet directory URI.
*
* @return string
*/
function get_stylesheet_uri() {
$stylesheet_dir_uri = get_stylesheet_directory_uri();
$stylesheet_uri = $stylesheet_dir_uri . '/style.css';
return apply_filters('stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri);
}
/**
* Retrieve localized stylesheet URI.
*
* The stylesheet directory for the localized stylesheet files are located, by
* default, in the base theme directory. The name of the locale file will be the
* locale followed by '.css'. If that does not exist, then the text direction
* stylesheet will be checked for existence, for example 'ltr.css'.
*
* The theme may change the location of the stylesheet directory by either using
* the 'stylesheet_directory_uri' filter or the 'locale_stylesheet_uri' filter.
* If you want to change the location of the stylesheet files for the entire
* WordPress workflow, then change the former. If you just have the locale in a
* separate folder, then change the latter.
*
* @since 2.1.0
* @uses apply_filters() Calls 'locale_stylesheet_uri' filter on stylesheet URI path and stylesheet directory URI.
*
* @return string
*/
function get_locale_stylesheet_uri() {
global $wp_locale;
$stylesheet_dir_uri = get_stylesheet_directory_uri();
$dir = get_stylesheet_directory();
$locale = get_locale();
if ( file_exists("$dir/$locale.css") )
$stylesheet_uri = "$stylesheet_dir_uri/$locale.css";
elseif ( !empty($wp_locale->text_direction) && file_exists("$dir/{$wp_locale->text_direction}.css") )
$stylesheet_uri = "$stylesheet_dir_uri/{$wp_locale->text_direction}.css";
else
$stylesheet_uri = '';
return apply_filters('locale_stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri);
}
/**
* Retrieve name of the current theme.
*
* @since 1.5.0
* @uses apply_filters() Calls 'template' filter on template option.
*
* @return string Template name.
*/
function get_template() {
return apply_filters('template', get_option('template'));
}
/**
* Retrieve current theme directory.
*
* @since 1.5.0
* @uses apply_filters() Calls 'template_directory' filter on template directory path and template name.
*
* @return string Template directory path.
*/
function get_template_directory() {
$template = get_template();
$theme_root = get_theme_root( $template );
$template_dir = "$theme_root/$template";
return apply_filters( 'template_directory', $template_dir, $template, $theme_root );
}
/**
* Retrieve theme directory URI.
*
* @since 1.5.0
* @uses apply_filters() Calls 'template_directory_uri' filter on template directory URI path and template name.
*
* @return string Template directory URI.
*/
function get_template_directory_uri() {
$template = get_template();
$theme_root_uri = get_theme_root_uri( $template );
$template_dir_uri = "$theme_root_uri/$template";
return apply_filters( 'template_directory_uri', $template_dir_uri, $template, $theme_root_uri );
}
/**
* Retrieve theme data from parsed theme file.
*
* The description will have the tags filtered with the following HTML elements
* whitelisted. The <b>'a'</b> element with the <em>href</em> and <em>title</em>
* attributes. The <b>abbr</b> element with the <em>title</em> attribute. The
* <b>acronym</b> element with the <em>title</em> attribute allowed. The
* <b>code</b>, <b>em</b>, and <b>strong</b> elements also allowed.
*
* The style.css file must contain theme name, theme URI, and description. The
* data can also contain author URI, author, template (parent template),
* version, status, and finally tags. Some of these are not used by WordPress
* administration panels, but are used by theme directory web sites which list
* the theme.
*
* @since 1.5.0
*
* @param string $theme_file Theme file path.
* @return array Theme data.
*/
function get_theme_data( $theme_file ) {
$default_headers = array(
'Name' => 'Theme Name',
'URI' => 'Theme URI',
'Description' => 'Description',
'Author' => 'Author',
'AuthorURI' => 'Author URI',
'Version' => 'Version',
'Template' => 'Template',
'Status' => 'Status',
'Tags' => 'Tags'
);
$themes_allowed_tags = array(
'a' => array(
'href' => array(),'title' => array()
),
'abbr' => array(
'title' => array()
),
'acronym' => array(
'title' => array()
),
'code' => array(),
'em' => array(),
'strong' => array()
);
$theme_data = get_file_data( $theme_file, $default_headers, 'theme' );
$theme_data['Name'] = $theme_data['Title'] = wp_kses( $theme_data['Name'], $themes_allowed_tags );
$theme_data['URI'] = esc_url( $theme_data['URI'] );
$theme_data['Description'] = wptexturize( wp_kses( $theme_data['Description'], $themes_allowed_tags ) );
$theme_data['AuthorURI'] = esc_url( $theme_data['AuthorURI'] );
$theme_data['Template'] = wp_kses( $theme_data['Template'], $themes_allowed_tags );
$theme_data['Version'] = wp_kses( $theme_data['Version'], $themes_allowed_tags );
if ( $theme_data['Status'] == '' )
$theme_data['Status'] = 'publish';
else
$theme_data['Status'] = wp_kses( $theme_data['Status'], $themes_allowed_tags );
if ( $theme_data['Tags'] == '' )
$theme_data['Tags'] = array();
else
$theme_data['Tags'] = array_map( 'trim', explode( ',', wp_kses( $theme_data['Tags'], array() ) ) );
if ( $theme_data['Author'] == '' ) {
$theme_data['Author'] = $theme_data['AuthorName'] = __('Anonymous');
} else {
$theme_data['AuthorName'] = wp_kses( $theme_data['Author'], $themes_allowed_tags );
if ( empty( $theme_data['AuthorURI'] ) ) {
$theme_data['Author'] = $theme_data['AuthorName'];
} else {
$theme_data['Author'] = sprintf( '<a href="%1$s" title="%2$s">%3$s</a>', $theme_data['AuthorURI'], esc_attr__( 'Visit author homepage' ), $theme_data['AuthorName'] );
}
}
return $theme_data;
}
/**
* Retrieve list of themes with theme data in theme directory.
*
* The theme is broken, if it doesn't have a parent theme and is missing either
* style.css and, or index.php. If the theme has a parent theme then it is
* broken, if it is missing style.css; index.php is optional. The broken theme
* list is saved in the {@link $wp_broken_themes} global, which is displayed on
* the theme list in the administration panels.
*
* @since 1.5.0
* @global array $wp_broken_themes Stores the broken themes.
* @global array $wp_themes Stores the working themes.
*
* @return array Theme list with theme data.
*/
function get_themes() {
global $wp_themes, $wp_broken_themes;
if ( isset($wp_themes) )
return $wp_themes;
if ( !$theme_files = search_theme_directories() )
return false;
asort( $theme_files );
$wp_themes = array();
foreach ( (array) $theme_files as $theme_file ) {
$theme_root = $theme_file['theme_root'];
$theme_file = $theme_file['theme_file'];
if ( !is_readable("$theme_root/$theme_file") ) {
$wp_broken_themes[$theme_file] = array('Name' => $theme_file, 'Title' => $theme_file, 'Description' => __('File not readable.'));
continue;
}
$theme_data = get_theme_data("$theme_root/$theme_file");
$name = $theme_data['Name'];
$title = $theme_data['Title'];
$description = wptexturize($theme_data['Description']);
$version = $theme_data['Version'];
$author = $theme_data['Author'];
$template = $theme_data['Template'];
$stylesheet = dirname($theme_file);
$screenshot = false;
foreach ( array('png', 'gif', 'jpg', 'jpeg') as $ext ) {
if (file_exists("$theme_root/$stylesheet/screenshot.$ext")) {
$screenshot = "screenshot.$ext";
break;
}
}
if ( empty($name) ) {
$name = dirname($theme_file);
$title = $name;
}
$parent_template = $template;
if ( empty($template) ) {
if ( file_exists("$theme_root/$stylesheet/index.php") )
$template = $stylesheet;
else
continue;
}
$template = trim( $template );
if ( !file_exists("$theme_root/$template/index.php") ) {
$parent_dir = dirname(dirname($theme_file));
if ( file_exists("$theme_root/$parent_dir/$template/index.php") ) {
$template = "$parent_dir/$template";
$template_directory = "$theme_root/$template";
} else {
/**
* The parent theme doesn't exist in the current theme's folder or sub folder
* so lets use the theme root for the parent template.
*/
if ( isset($theme_files[$template]) && file_exists( $theme_files[$template]['theme_root'] . "/$template/index.php" ) ) {
$template_directory = $theme_files[$template]['theme_root'] . "/$template";
} else {
if ( empty( $parent_template) )
$wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => __('Template is missing.'), 'error' => 'no_template');
else
$wp_broken_themes[$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 );
continue;
}
}
} else {
$template_directory = trim( $theme_root . '/' . $template );
}
$stylesheet_files = array();
$template_files = array();
$stylesheet_dir = @ dir("$theme_root/$stylesheet");
if ( $stylesheet_dir ) {
while ( ($file = $stylesheet_dir->read()) !== false ) {
if ( !preg_match('|^\.+$|', $file) ) {
if ( preg_match('|\.css$|', $file) )
$stylesheet_files[] = "$theme_root/$stylesheet/$file";
elseif ( preg_match('|\.php$|', $file) )
$template_files[] = "$theme_root/$stylesheet/$file";
}
}
@ $stylesheet_dir->close();
}
$template_dir = @ dir("$template_directory");
if ( $template_dir ) {
while ( ($file = $template_dir->read()) !== false ) {
if ( preg_match('|^\.+$|', $file) )
continue;
if ( preg_match('|\.php$|', $file) ) {
$template_files[] = "$template_directory/$file";
} elseif ( is_dir("$template_directory/$file") ) {
$template_subdir = @ dir("$template_directory/$file");
if ( !$template_subdir )
continue;
while ( ($subfile = $template_subdir->read()) !== false ) {
if ( preg_match('|^\.+$|', $subfile) )
continue;
if ( preg_match('|\.php$|', $subfile) )
$template_files[] = "$template_directory/$file/$subfile";
}
@ $template_subdir->close();
}
}
@ $template_dir->close();
}
//Make unique and remove duplicates when stylesheet and template are the same i.e. most themes
$template_files = array_unique($template_files);
$stylesheet_files = array_unique($stylesheet_files);
$template_dir = $template_directory;
$stylesheet_dir = $theme_root . '/' . $stylesheet;
if ( empty($template_dir) )
$template_dir = '/';
if ( empty($stylesheet_dir) )
$stylesheet_dir = '/';
// Check for theme name collision. This occurs if a theme is copied to
// a new theme directory and the theme header is not updated. Whichever
// theme is first keeps the name. Subsequent themes get a suffix applied.
// Default themes themes always trump their pretenders.
if ( isset($wp_themes[$name]) ) {
$trump_cards = array(
'classic' => 'WordPress Classic',
'default' => 'WordPress Default',
'twentyten' => 'Twenty Ten',
'twentyeleven' => 'Twenty Eleven',
'twentytwelve' => 'Twenty Twelve',
);
if ( isset( $trump_cards[ $stylesheet ] ) && $name == $trump_cards[ $stylesheet ] ) {
// If another theme has claimed to be one of our default themes, move
// them aside.
$suffix = $wp_themes[$name]['Stylesheet'];
$new_name = "$name/$suffix";
$wp_themes[$new_name] = $wp_themes[$name];
$wp_themes[$new_name]['Name'] = $new_name;
} else {
$name = "$name/$stylesheet";
}
}
$theme_roots[$stylesheet] = str_replace( WP_CONTENT_DIR, '', $theme_root );
$wp_themes[$name] = array(
'Name' => $name,
'Title' => $title,
'Description' => $description,
'Author' => $author,
'Author Name' => $theme_data['AuthorName'],
'Author URI' => $theme_data['AuthorURI'],
'Version' => $version,
'Template' => $template,
'Stylesheet' => $stylesheet,
'Template Files' => $template_files,
'Stylesheet Files' => $stylesheet_files,
'Template Dir' => $template_dir,
'Stylesheet Dir' => $stylesheet_dir,
'Status' => $theme_data['Status'],
'Screenshot' => $screenshot,
'Tags' => $theme_data['Tags'],
'Theme Root' => $theme_root,
'Theme Root URI' => str_replace( WP_CONTENT_DIR, content_url(), $theme_root ),
);
}
unset($theme_files);
/* Store theme roots in the DB */
if ( get_site_transient( 'theme_roots' ) != $theme_roots )
set_site_transient( 'theme_roots', $theme_roots, 7200 ); // cache for two hours
unset($theme_roots);
/* Resolve theme dependencies. */
$theme_names = array_keys( $wp_themes );
foreach ( (array) $theme_names as $theme_name ) {
$wp_themes[$theme_name]['Parent Theme'] = '';
if ( $wp_themes[$theme_name]['Stylesheet'] != $wp_themes[$theme_name]['Template'] ) {
foreach ( (array) $theme_names as $parent_theme_name ) {
if ( ($wp_themes[$parent_theme_name]['Stylesheet'] == $wp_themes[$parent_theme_name]['Template']) && ($wp_themes[$parent_theme_name]['Template'] == $wp_themes[$theme_name]['Template']) ) {
$wp_themes[$theme_name]['Parent Theme'] = $wp_themes[$parent_theme_name]['Name'];
break;
}
}
}
}
return $wp_themes;
}
/**
* Retrieve theme roots.
*
* @since 2.9.0
*
* @return array|string An array of theme roots keyed by template/stylesheet or a single theme root if all themes have the same root.
*/
function get_theme_roots() {
global $wp_theme_directories;
if ( count($wp_theme_directories) <= 1 )
return get_theme_root();
$theme_roots = get_site_transient( 'theme_roots' );
if ( false === $theme_roots ) {
get_themes();
$theme_roots = get_site_transient( 'theme_roots' ); // this is set in get_theme()
}
return $theme_roots;
}
/**
* 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 ( is_array( $themes ) && 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();
$current_theme = 'Twenty Eleven';
if ( $themes ) {
$theme_names = array_keys( $themes );
$current_template = get_option( 'template' );
$current_stylesheet = get_option( 'stylesheet' );
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 ( ! file_exists( $directory ) ) {
// Try prepending as the theme directory could be relative to the content directory
$directory = WP_CONTENT_DIR . '/' . $directory;
// If this directory does not exist, return and do not register
if ( ! file_exists( $directory ) )
return false;
}
$wp_theme_directories[] = $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($theme_subdirs);
if ( !$found_subdir_themes )
$wp_broken_themes[$theme_dir] = array('Name' => $theme_dir, 'Title' => $theme_dir, 'Description' => __('Stylesheet is missing.'));
}
}
}
@closedir( $themes_dir );
}
return $theme_files;
}
/**
* 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 ) {
if ( $stylesheet_or_template && $theme_root = get_raw_theme_root( $stylesheet_or_template ) )
$theme_root = $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 ) {
if ( $stylesheet_or_template ) {
if ( $theme_root = get_raw_theme_root($stylesheet_or_template) )
$theme_root_uri = content_url( str_replace( WP_CONTENT_DIR, '', $theme_root ) );
else
$theme_root_uri = content_url( 'themes' );
} 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 with no filters applied.
*
* @since 3.1.0
*
* Before 3.4.0, this incorrectly returned a path relative to the content directory ("/themes") when
* only one theme directory was registered. Absolute paths are now always returned.
*
* @param string $stylesheet_or_template The stylesheet or template name of the theme
* @return string Theme root
*/
function get_raw_theme_root( $stylesheet_or_template, $no_cache = false ) {
global $wp_theme_directories;
if ( count($wp_theme_directories) <= 1 )
return WP_CONTENT_DIR . '/themes';
$theme_root = false;
// If requesting the root for the current theme, consult options to avoid calling get_theme_roots()
if ( !$no_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;
}
/**
* Retrieve path to a template
*
* Used to quickly retrieve the path of a template without including the file
* extension. It will also check the parent theme, if the file exists, with
* the use of {@link locate_template()}. Allows for more generic template location
* without the use of the other get_*_template() functions.
*
* @since 1.5.0
*
* @param string $type Filename without extension.
* @param array $templates An optional list of template candidates
* @return string Full path to file.
*/
function get_query_template( $type, $templates = array() ) {
$type = preg_replace( '|[^a-z0-9-]+|', '', $type );
if ( empty( $templates ) )
$templates = array("{$type}.php");
return apply_filters( "{$type}_template", locate_template( $templates ) );
}
/**
* 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() {
$post_type = get_query_var( 'post_type' );
$templates = array();
if ( $post_type )
$templates[] = "archive-{$post_type}.php";
$templates[] = 'archive.php';
return get_query_template( 'archive', $templates );
}
/**
* Retrieve path of author template in current or parent template.
*
* @since 1.5.0
*
* @return string
*/
function get_author_template() {
$author = get_queried_object();
$templates = array();
$templates[] = "author-{$author->user_nicename}.php";
$templates[] = "author-{$author->ID}.php";
$templates[] = 'author.php';
return get_query_template( 'author', $templates );
}
/**
* 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() {
$category = get_queried_object();
$templates = array();
$templates[] = "category-{$category->slug}.php";
$templates[] = "category-{$category->term_id}.php";
$templates[] = 'category.php';
return get_query_template( 'category', $templates );
}
/**
* 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 = get_queried_object();
$templates = array();
$templates[] = "tag-{$tag->slug}.php";
$templates[] = "tag-{$tag->term_id}.php";
$templates[] = 'tag.php';
return get_query_template( 'tag', $templates );
}
/**
* 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 2.5.0
* @uses apply_filters() Calls 'taxonomy_template' filter on found path.
*
* @return string
*/
function get_taxonomy_template() {
$term = get_queried_object();
$taxonomy = $term->taxonomy;
$templates = array();
$templates[] = "taxonomy-$taxonomy-{$term->slug}.php";
$templates[] = "taxonomy-$taxonomy.php";
$templates[] = 'taxonomy.php';
return get_query_template( 'taxonomy', $templates );
}
/**
* 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() {
$templates = array( 'home.php', 'index.php' );
return get_query_template( 'home', $templates );
}
/**
* 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() {
$templates = array('front-page.php');
return get_query_template( 'front_page', $templates );
}
/**
* 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() {
$id = 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 = 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 get_query_template( 'page', $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() {
$object = get_queried_object();
$templates = array();
$templates[] = "single-{$object->post_type}.php";
$templates[] = "single.php";
return get_query_template( 'single', $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 = get_query_template( 'comments_popup', array( 'comments-popup.php' ) );
// Backward compat code will be removed in a future release
if ('' == $template)
$template = ABSPATH . WPINC . '/theme-compat/comments-popup.php';
return $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 string|array $template_names Template file(s) to search for, in 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 ) {
$located = '';
foreach ( (array) $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;
// 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_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'], '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 on updated theme display name.
*
* @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 = get_current_theme();
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));
}
delete_option('current_theme');
$theme = get_current_theme();
if ( is_admin() && false === get_option( "theme_mods_$stylesheet" ) ) {
$default_theme_mods = (array) get_option( "mods_$theme" );
add_option( "theme_mods_$stylesheet", $default_theme_mods );
}
update_option( 'theme_switched', $old_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;
}
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_current_theme();
$mods = get_option( "mods_$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' ) );
delete_option( 'mods_' . get_current_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 : '';
$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' );