3
* Theme, template, and stylesheet functions.
10
* Returns an array of WP_Theme objects based on the arguments.
12
* Despite advances over get_themes(), this function is quite expensive, and grows
13
* linearly with additional themes. Stick to wp_get_theme() if possible.
17
* @param array $args The search arguments. Optional.
18
* - errors mixed True to return themes with errors, false to return themes without errors, null
19
* to return all themes. Defaults to false.
20
* - allowed mixed (Multisite) True to return only allowed themes for a site. False to return only
21
* disallowed themes for a site. 'site' to return only site-allowed themes. 'network'
22
* to return only network-allowed themes. Null to return all themes. Defaults to null.
23
* - blog_id int (Multisite) The blog ID used to calculate which themes are allowed. Defaults to 0,
24
* synonymous for the current blog.
25
* @return Array of WP_Theme objects.
27
function wp_get_themes( $args = array() ) {
28
global $wp_theme_directories;
30
$defaults = array( 'errors' => false, 'allowed' => null, 'blog_id' => 0 );
31
$args = wp_parse_args( $args, $defaults );
33
$theme_directories = search_theme_directories();
35
if ( count( $wp_theme_directories ) > 1 ) {
36
// Make sure the current theme wins out, in case search_theme_directories() picks the wrong
37
// one in the case of a conflict. (Normally, last registered theme root wins.)
38
$current_theme = get_stylesheet();
39
if ( isset( $theme_directories[ $current_theme ] ) ) {
40
$root_of_current_theme = get_raw_theme_root( $current_theme );
41
if ( ! in_array( $root_of_current_theme, $wp_theme_directories ) )
42
$root_of_current_theme = WP_CONTENT_DIR . $root_of_current_theme;
43
$theme_directories[ $current_theme ]['theme_root'] = $root_of_current_theme;
47
if ( empty( $theme_directories ) )
50
if ( is_multisite() && null !== $args['allowed'] ) {
51
$allowed = $args['allowed'];
52
if ( 'network' === $allowed )
53
$theme_directories = array_intersect_key( $theme_directories, WP_Theme::get_allowed_on_network() );
54
elseif ( 'site' === $allowed )
55
$theme_directories = array_intersect_key( $theme_directories, WP_Theme::get_allowed_on_site( $args['blog_id'] ) );
57
$theme_directories = array_intersect_key( $theme_directories, WP_Theme::get_allowed( $args['blog_id'] ) );
59
$theme_directories = array_diff_key( $theme_directories, WP_Theme::get_allowed( $args['blog_id'] ) );
63
static $_themes = array();
65
foreach ( $theme_directories as $theme => $theme_root ) {
66
if ( isset( $_themes[ $theme_root['theme_root'] . '/' . $theme ] ) )
67
$themes[ $theme ] = $_themes[ $theme_root['theme_root'] . '/' . $theme ];
69
$themes[ $theme ] = $_themes[ $theme_root['theme_root'] . '/' . $theme ] = new WP_Theme( $theme, $theme_root['theme_root'] );
72
if ( null !== $args['errors'] ) {
73
foreach ( $themes as $theme => $wp_theme ) {
74
if ( $wp_theme->errors() != $args['errors'] )
75
unset( $themes[ $theme ] );
83
* Gets a WP_Theme object for a theme.
87
* @param string $stylesheet Directory name for the theme. Optional. Defaults to current theme.
88
* @param string $theme_root Absolute path of the theme root to look in. Optional. If not specified, get_raw_theme_root()
89
* is used to calculate the theme root for the $stylesheet provided (or current theme).
90
* @return WP_Theme Theme object. Be sure to check the object's exists() method if you need to confirm the theme's existence.
92
function wp_get_theme( $stylesheet = null, $theme_root = null ) {
93
global $wp_theme_directories;
95
if ( empty( $stylesheet ) )
96
$stylesheet = get_stylesheet();
98
if ( empty( $theme_root ) ) {
99
$theme_root = get_raw_theme_root( $stylesheet );
100
if ( false === $theme_root )
101
$theme_root = WP_CONTENT_DIR . '/themes';
102
elseif ( ! in_array( $theme_root, (array) $wp_theme_directories ) )
103
$theme_root = WP_CONTENT_DIR . $theme_root;
106
return new WP_Theme( $stylesheet, $theme_root );
110
* Clears the cache held by get_theme_roots() and WP_Theme.
113
* @param bool $clear_update_cache Whether to clear the Theme updates cache
115
function wp_clean_themes_cache( $clear_update_cache = true ) {
116
if ( $clear_update_cache )
117
delete_site_transient( 'update_themes' );
118
search_theme_directories( true );
119
foreach ( wp_get_themes( array( 'errors' => null ) ) as $theme )
120
$theme->cache_delete();
124
* Whether a child theme is in use.
128
* @return bool true if a child theme is in use, false otherwise.
130
function is_child_theme() {
131
return ( TEMPLATEPATH !== STYLESHEETPATH );
135
* Retrieve name of the current stylesheet.
137
* The theme name that the administrator has currently set the front end theme
140
* For all intents and purposes, the template name and the stylesheet name are
141
* going to be the same for most cases.
145
* @return string Stylesheet name.
147
function get_stylesheet() {
149
* Filter the name of current stylesheet.
153
* @param string $stylesheet Name of the current stylesheet.
155
return apply_filters( 'stylesheet', get_option( 'stylesheet' ) );
159
* Retrieve stylesheet directory path for current theme.
163
* @return string Path to current theme directory.
165
function get_stylesheet_directory() {
166
$stylesheet = get_stylesheet();
167
$theme_root = get_theme_root( $stylesheet );
168
$stylesheet_dir = "$theme_root/$stylesheet";
171
* Filter the stylesheet directory path for current theme.
175
* @param string $stylesheet_dir Absolute path to the current them.
176
* @param string $stylesheet Directory name of the current theme.
177
* @param string $theme_root Absolute path to themes directory.
179
return apply_filters( 'stylesheet_directory', $stylesheet_dir, $stylesheet, $theme_root );
183
* Retrieve stylesheet directory URI.
189
function get_stylesheet_directory_uri() {
190
$stylesheet = str_replace( '%2F', '/', rawurlencode( get_stylesheet() ) );
191
$theme_root_uri = get_theme_root_uri( $stylesheet );
192
$stylesheet_dir_uri = "$theme_root_uri/$stylesheet";
195
* Filter the stylesheet directory URI.
199
* @param string $stylesheet_dir_uri Stylesheet directory URI.
200
* @param string $stylesheet Name of the activated theme's directory.
201
* @param string $theme_root_uri Themes root URI.
203
return apply_filters( 'stylesheet_directory_uri', $stylesheet_dir_uri, $stylesheet, $theme_root_uri );
207
* Retrieve URI of current theme stylesheet.
209
* The stylesheet file name is 'style.css' which is appended to {@link
210
* get_stylesheet_directory_uri() stylesheet directory URI} path.
216
function get_stylesheet_uri() {
217
$stylesheet_dir_uri = get_stylesheet_directory_uri();
218
$stylesheet_uri = $stylesheet_dir_uri . '/style.css';
220
* Filter the URI of the current theme stylesheet.
224
* @param string $stylesheet_uri Stylesheet URI for the current theme/child theme.
225
* @param string $stylesheet_dir_uri Stylesheet directory URI for the current theme/child theme.
227
return apply_filters( 'stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri );
231
* Retrieve localized stylesheet URI.
233
* The stylesheet directory for the localized stylesheet files are located, by
234
* default, in the base theme directory. The name of the locale file will be the
235
* locale followed by '.css'. If that does not exist, then the text direction
236
* stylesheet will be checked for existence, for example 'ltr.css'.
238
* The theme may change the location of the stylesheet directory by either using
239
* the 'stylesheet_directory_uri' filter or the 'locale_stylesheet_uri' filter.
240
* If you want to change the location of the stylesheet files for the entire
241
* WordPress workflow, then change the former. If you just have the locale in a
242
* separate folder, then change the latter.
248
function get_locale_stylesheet_uri() {
250
$stylesheet_dir_uri = get_stylesheet_directory_uri();
251
$dir = get_stylesheet_directory();
252
$locale = get_locale();
253
if ( file_exists("$dir/$locale.css") )
254
$stylesheet_uri = "$stylesheet_dir_uri/$locale.css";
255
elseif ( !empty($wp_locale->text_direction) && file_exists("$dir/{$wp_locale->text_direction}.css") )
256
$stylesheet_uri = "$stylesheet_dir_uri/{$wp_locale->text_direction}.css";
258
$stylesheet_uri = '';
260
* Filter the localized stylesheet URI.
264
* @param string $stylesheet_uri Localized stylesheet URI.
265
* @param string $stylesheet_dir_uri Stylesheet directory URI.
267
return apply_filters( 'locale_stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri );
271
* Retrieve name of the current theme.
274
* @uses apply_filters() Calls 'template' filter on template option.
276
* @return string Template name.
278
function get_template() {
280
* Filter the name of the current theme.
284
* @param string $template Current theme's directory name.
286
return apply_filters( 'template', get_option( 'template' ) );
290
* Retrieve current theme directory.
294
* @return string Template directory path.
296
function get_template_directory() {
297
$template = get_template();
298
$theme_root = get_theme_root( $template );
299
$template_dir = "$theme_root/$template";
302
* Filter the current theme directory path.
306
* @param string $template_dir The URI of the current theme directory.
307
* @param string $template Directory name of the current theme.
308
* @param string $theme_root Absolute path to the themes directory.
310
return apply_filters( 'template_directory', $template_dir, $template, $theme_root );
314
* Retrieve theme directory URI.
318
* @return string Template directory URI.
320
function get_template_directory_uri() {
321
$template = str_replace( '%2F', '/', rawurlencode( get_template() ) );
322
$theme_root_uri = get_theme_root_uri( $template );
323
$template_dir_uri = "$theme_root_uri/$template";
326
* Filter the current theme directory URI.
330
* @param string $template_dir_uri The URI of the current theme directory.
331
* @param string $template Directory name of the current theme.
332
* @param string $theme_root_uri The themes root URI.
334
return apply_filters( 'template_directory_uri', $template_dir_uri, $template, $theme_root_uri );
338
* Retrieve theme roots.
342
* @return array|string An array of theme roots keyed by template/stylesheet or a single theme root if all themes have the same root.
344
function get_theme_roots() {
345
global $wp_theme_directories;
347
if ( count($wp_theme_directories) <= 1 )
350
$theme_roots = get_site_transient( 'theme_roots' );
351
if ( false === $theme_roots ) {
352
search_theme_directories( true ); // Regenerate the transient.
353
$theme_roots = get_site_transient( 'theme_roots' );
359
* Register a directory that contains themes.
363
* @param string $directory Either the full filesystem path to a theme folder or a folder within WP_CONTENT_DIR
366
function register_theme_directory( $directory ) {
367
global $wp_theme_directories;
369
if ( ! file_exists( $directory ) ) {
370
// Try prepending as the theme directory could be relative to the content directory
371
$directory = WP_CONTENT_DIR . '/' . $directory;
372
// If this directory does not exist, return and do not register
373
if ( ! file_exists( $directory ) ) {
378
if ( ! is_array( $wp_theme_directories ) ) {
379
$wp_theme_directories = array();
382
$untrailed = untrailingslashit( $directory );
383
if ( ! empty( $untrailed ) && ! in_array( $untrailed, $wp_theme_directories ) ) {
384
$wp_theme_directories[] = $untrailed;
391
* Search all registered theme directories for complete and valid themes.
395
* @param bool $force Optional. Whether to force a new directory scan. Defaults to false.
396
* @return array Valid themes found
398
function search_theme_directories( $force = false ) {
399
global $wp_theme_directories;
400
if ( empty( $wp_theme_directories ) )
403
static $found_themes;
404
if ( ! $force && isset( $found_themes ) )
405
return $found_themes;
407
$found_themes = array();
409
$wp_theme_directories = (array) $wp_theme_directories;
411
// Set up maybe-relative, maybe-absolute array of theme directories.
412
// We always want to return absolute, but we need to cache relative
413
// to use in get_theme_root().
414
foreach ( $wp_theme_directories as $theme_root ) {
415
if ( 0 === strpos( $theme_root, WP_CONTENT_DIR ) )
416
$relative_theme_roots[ str_replace( WP_CONTENT_DIR, '', $theme_root ) ] = $theme_root;
418
$relative_theme_roots[ $theme_root ] = $theme_root;
422
* Filter whether to get the cache of the registered theme directories.
426
* @param bool $cache_expiration Whether to get the cache of the theme directories. Default false.
427
* @param string $cache_directory Directory to be searched for the cache.
429
if ( $cache_expiration = apply_filters( 'wp_cache_themes_persistently', false, 'search_theme_directories' ) ) {
430
$cached_roots = get_site_transient( 'theme_roots' );
431
if ( is_array( $cached_roots ) ) {
432
foreach ( $cached_roots as $theme_dir => $theme_root ) {
433
// A cached theme root is no longer around, so skip it.
434
if ( ! isset( $relative_theme_roots[ $theme_root ] ) )
436
$found_themes[ $theme_dir ] = array(
437
'theme_file' => $theme_dir . '/style.css',
438
'theme_root' => $relative_theme_roots[ $theme_root ], // Convert relative to absolute.
441
return $found_themes;
443
if ( ! is_int( $cache_expiration ) )
444
$cache_expiration = 1800; // half hour
446
$cache_expiration = 1800; // half hour
449
/* Loop the registered theme directories and extract all themes */
450
foreach ( $wp_theme_directories as $theme_root ) {
452
// Start with directories in the root of the current theme directory.
453
$dirs = @ scandir( $theme_root );
455
trigger_error( "$theme_root is not readable", E_USER_NOTICE );
458
foreach ( $dirs as $dir ) {
459
if ( ! is_dir( $theme_root . '/' . $dir ) || $dir[0] == '.' || $dir == 'CVS' )
461
if ( file_exists( $theme_root . '/' . $dir . '/style.css' ) ) {
462
// wp-content/themes/a-single-theme
463
// wp-content/themes is $theme_root, a-single-theme is $dir
464
$found_themes[ $dir ] = array(
465
'theme_file' => $dir . '/style.css',
466
'theme_root' => $theme_root,
469
$found_theme = false;
470
// wp-content/themes/a-folder-of-themes/*
471
// wp-content/themes is $theme_root, a-folder-of-themes is $dir, then themes are $sub_dirs
472
$sub_dirs = @ scandir( $theme_root . '/' . $dir );
474
trigger_error( "$theme_root/$dir is not readable", E_USER_NOTICE );
477
foreach ( $sub_dirs as $sub_dir ) {
478
if ( ! is_dir( $theme_root . '/' . $dir . '/' . $sub_dir ) || $dir[0] == '.' || $dir == 'CVS' )
480
if ( ! file_exists( $theme_root . '/' . $dir . '/' . $sub_dir . '/style.css' ) )
482
$found_themes[ $dir . '/' . $sub_dir ] = array(
483
'theme_file' => $dir . '/' . $sub_dir . '/style.css',
484
'theme_root' => $theme_root,
488
// Never mind the above, it's just a theme missing a style.css.
489
// Return it; WP_Theme will catch the error.
490
if ( ! $found_theme )
491
$found_themes[ $dir ] = array(
492
'theme_file' => $dir . '/style.css',
493
'theme_root' => $theme_root,
499
asort( $found_themes );
501
$theme_roots = array();
502
$relative_theme_roots = array_flip( $relative_theme_roots );
504
foreach ( $found_themes as $theme_dir => $theme_data ) {
505
$theme_roots[ $theme_dir ] = $relative_theme_roots[ $theme_data['theme_root'] ]; // Convert absolute to relative.
508
if ( $theme_roots != get_site_transient( 'theme_roots' ) )
509
set_site_transient( 'theme_roots', $theme_roots, $cache_expiration );
511
return $found_themes;
515
* Retrieve path to themes directory.
517
* Does not have trailing slash.
521
* @param string $stylesheet_or_template The stylesheet or template name of the theme
522
* @return string Theme path.
524
function get_theme_root( $stylesheet_or_template = false ) {
525
global $wp_theme_directories;
527
if ( $stylesheet_or_template && $theme_root = get_raw_theme_root( $stylesheet_or_template ) ) {
528
// Always prepend WP_CONTENT_DIR unless the root currently registered as a theme directory.
529
// This gives relative theme roots the benefit of the doubt when things go haywire.
530
if ( ! in_array( $theme_root, (array) $wp_theme_directories ) )
531
$theme_root = WP_CONTENT_DIR . $theme_root;
533
$theme_root = WP_CONTENT_DIR . '/themes';
537
* Filter the absolute path to the themes directory.
541
* @param string $theme_root Absolute path to themes directory.
543
return apply_filters( 'theme_root', $theme_root );
547
* Retrieve URI for themes directory.
549
* Does not have trailing slash.
553
* @param string $stylesheet_or_template Optional. The stylesheet or template name of the theme.
554
* Default is to leverage the main theme root.
555
* @param string $theme_root Optional. The theme root for which calculations will be based, preventing
556
* the need for a get_raw_theme_root() call.
557
* @return string Themes URI.
559
function get_theme_root_uri( $stylesheet_or_template = false, $theme_root = false ) {
560
global $wp_theme_directories;
562
if ( $stylesheet_or_template && ! $theme_root )
563
$theme_root = get_raw_theme_root( $stylesheet_or_template );
565
if ( $stylesheet_or_template && $theme_root ) {
566
if ( in_array( $theme_root, (array) $wp_theme_directories ) ) {
567
// Absolute path. Make an educated guess. YMMV -- but note the filter below.
568
if ( 0 === strpos( $theme_root, WP_CONTENT_DIR ) )
569
$theme_root_uri = content_url( str_replace( WP_CONTENT_DIR, '', $theme_root ) );
570
elseif ( 0 === strpos( $theme_root, ABSPATH ) )
571
$theme_root_uri = site_url( str_replace( ABSPATH, '', $theme_root ) );
572
elseif ( 0 === strpos( $theme_root, WP_PLUGIN_DIR ) || 0 === strpos( $theme_root, WPMU_PLUGIN_DIR ) )
573
$theme_root_uri = plugins_url( basename( $theme_root ), $theme_root );
575
$theme_root_uri = $theme_root;
577
$theme_root_uri = content_url( $theme_root );
580
$theme_root_uri = content_url( 'themes' );
584
* Filter the URI for themes directory.
588
* @param string $theme_root_uri The URI for themes directory.
589
* @param string $siteurl WordPress web address which is set in General Options.
590
* @param string $stylesheet_or_template Stylesheet or template name of the theme.
592
return apply_filters( 'theme_root_uri', $theme_root_uri, get_option( 'siteurl' ), $stylesheet_or_template );
596
* Get the raw theme root relative to the content directory with no filters applied.
600
* @param string $stylesheet_or_template The stylesheet or template name of the theme
601
* @param bool $skip_cache Optional. Whether to skip the cache. Defaults to false, meaning the cache is used.
602
* @return string Theme root
604
function get_raw_theme_root( $stylesheet_or_template, $skip_cache = false ) {
605
global $wp_theme_directories;
607
if ( count($wp_theme_directories) <= 1 )
612
// If requesting the root for the current theme, consult options to avoid calling get_theme_roots()
613
if ( ! $skip_cache ) {
614
if ( get_option('stylesheet') == $stylesheet_or_template )
615
$theme_root = get_option('stylesheet_root');
616
elseif ( get_option('template') == $stylesheet_or_template )
617
$theme_root = get_option('template_root');
620
if ( empty($theme_root) ) {
621
$theme_roots = get_theme_roots();
622
if ( !empty($theme_roots[$stylesheet_or_template]) )
623
$theme_root = $theme_roots[$stylesheet_or_template];
630
* Display localized stylesheet link element.
634
function locale_stylesheet() {
635
$stylesheet = get_locale_stylesheet_uri();
636
if ( empty($stylesheet) )
638
echo '<link rel="stylesheet" href="' . $stylesheet . '" type="text/css" media="screen" />';
642
* Start preview theme output buffer.
644
* Will only perform task if the user has permissions and template and preview
645
* query variables exist.
649
function preview_theme() {
650
if ( ! (isset($_GET['template']) && isset($_GET['preview'])) )
653
if ( !current_user_can( 'switch_themes' ) )
656
// Admin Thickbox requests
657
if ( isset( $_GET['preview_iframe'] ) )
658
show_admin_bar( false );
660
$_GET['template'] = preg_replace('|[^a-z0-9_./-]|i', '', $_GET['template']);
662
if ( validate_file($_GET['template']) )
665
add_filter( 'template', '_preview_theme_template_filter' );
667
if ( isset($_GET['stylesheet']) ) {
668
$_GET['stylesheet'] = preg_replace('|[^a-z0-9_./-]|i', '', $_GET['stylesheet']);
669
if ( validate_file($_GET['stylesheet']) )
671
add_filter( 'stylesheet', '_preview_theme_stylesheet_filter' );
674
// Prevent theme mods to current theme being used on theme being previewed
675
add_filter( 'pre_option_theme_mods_' . get_option( 'stylesheet' ), '__return_empty_array' );
677
ob_start( 'preview_theme_ob_filter' );
679
add_action('setup_theme', 'preview_theme');
682
* Private function to modify the current template when previewing a theme
689
function _preview_theme_template_filter() {
690
return isset($_GET['template']) ? $_GET['template'] : '';
694
* Private function to modify the current stylesheet when previewing a theme
701
function _preview_theme_stylesheet_filter() {
702
return isset($_GET['stylesheet']) ? $_GET['stylesheet'] : '';
706
* Callback function for ob_start() to capture all links in the theme.
711
* @param string $content
714
function preview_theme_ob_filter( $content ) {
715
return preg_replace_callback( "|(<a.*?href=([\"']))(.*?)([\"'].*?>)|", 'preview_theme_ob_filter_callback', $content );
719
* Manipulates preview theme links in order to control and maintain location.
721
* Callback function for preg_replace_callback() to accept and filter matches.
726
* @param array $matches
729
function preview_theme_ob_filter_callback( $matches ) {
730
if ( strpos($matches[4], 'onclick') !== false )
731
$matches[4] = preg_replace('#onclick=([\'"]).*?(?<!\\\)\\1#i', '', $matches[4]); //Strip out any onclicks from rest of <a>. (?<!\\\) means to ignore the '" if it's escaped by \ to prevent breaking mid-attribute.
733
( false !== strpos($matches[3], '/wp-admin/') )
735
( false !== strpos( $matches[3], '://' ) && 0 !== strpos( $matches[3], home_url() ) )
737
( false !== strpos($matches[3], '/feed/') )
739
( false !== strpos($matches[3], '/trackback/') )
741
return $matches[1] . "#$matches[2] onclick=$matches[2]return false;" . $matches[4];
743
$stylesheet = isset( $_GET['stylesheet'] ) ? $_GET['stylesheet'] : '';
744
$template = isset( $_GET['template'] ) ? $_GET['template'] : '';
746
$link = add_query_arg( array( 'preview' => 1, 'template' => $template, 'stylesheet' => $stylesheet, 'preview_iframe' => 1 ), $matches[3] );
747
if ( 0 === strpos($link, 'preview=1') )
749
return $matches[1] . esc_attr( $link ) . $matches[4];
753
* Switches the theme.
755
* Accepts one argument: $stylesheet of the theme. It also accepts an additional function signature
756
* of two arguments: $template then $stylesheet. This is for backwards compatibility.
760
* @param string $stylesheet Stylesheet name
762
function switch_theme( $stylesheet ) {
763
global $wp_theme_directories, $wp_customize, $sidebars_widgets;
765
$_sidebars_widgets = null;
766
if ( 'wp_ajax_customize_save' === current_action() ) {
767
$_sidebars_widgets = $wp_customize->post_value( $wp_customize->get_setting( 'old_sidebars_widgets_data' ) );
768
} elseif ( is_array( $sidebars_widgets ) ) {
769
$_sidebars_widgets = $sidebars_widgets;
772
if ( is_array( $_sidebars_widgets ) ) {
773
set_theme_mod( 'sidebars_widgets', array( 'time' => time(), 'data' => $_sidebars_widgets ) );
776
$old_theme = wp_get_theme();
777
$new_theme = wp_get_theme( $stylesheet );
779
if ( func_num_args() > 1 ) {
780
$template = $stylesheet;
781
$stylesheet = func_get_arg( 1 );
783
$template = $new_theme->get_template();
786
update_option( 'template', $template );
787
update_option( 'stylesheet', $stylesheet );
789
if ( count( $wp_theme_directories ) > 1 ) {
790
update_option( 'template_root', get_raw_theme_root( $template, true ) );
791
update_option( 'stylesheet_root', get_raw_theme_root( $stylesheet, true ) );
793
delete_option( 'template_root' );
794
delete_option( 'stylesheet_root' );
797
$new_name = $new_theme->get('Name');
799
update_option( 'current_theme', $new_name );
801
// Migrate from the old mods_{name} option to theme_mods_{slug}.
802
if ( is_admin() && false === get_option( 'theme_mods_' . $stylesheet ) ) {
803
$default_theme_mods = (array) get_option( 'mods_' . $new_name );
804
add_option( "theme_mods_$stylesheet", $default_theme_mods );
807
* Since retrieve_widgets() is called when initializing the customizer theme,
808
* we need to to remove the theme mods to avoid overwriting changes made via
809
* the widget customizer when accessing wp-admin/widgets.php.
811
if ( 'wp_ajax_customize_save' === current_action() ) {
812
remove_theme_mod( 'sidebars_widgets' );
816
update_option( 'theme_switched', $old_theme->get_stylesheet() );
818
* Fires after the theme is switched.
822
* @param string $new_name Name of the new theme.
823
* @param WP_Theme $new_theme WP_Theme instance of the new theme.
825
do_action( 'switch_theme', $new_name, $new_theme );
829
* Checks that current theme files 'index.php' and 'style.css' exists.
831
* Does not check the default theme, which is the fallback and should always exist.
832
* Will switch theme to the fallback theme if current theme does not validate.
833
* You can use the 'validate_current_theme' filter to return false to
834
* disable this functionality.
837
* @see WP_DEFAULT_THEME
841
function validate_current_theme() {
843
* Filter whether to validate the current theme.
847
* @param bool true Validation flag to check the current theme.
849
if ( defined('WP_INSTALLING') || ! apply_filters( 'validate_current_theme', true ) )
852
if ( get_template() != WP_DEFAULT_THEME && !file_exists(get_template_directory() . '/index.php') ) {
853
switch_theme( WP_DEFAULT_THEME );
857
if ( get_stylesheet() != WP_DEFAULT_THEME && !file_exists(get_template_directory() . '/style.css') ) {
858
switch_theme( WP_DEFAULT_THEME );
862
if ( is_child_theme() && ! file_exists( get_stylesheet_directory() . '/style.css' ) ) {
863
switch_theme( WP_DEFAULT_THEME );
871
* Retrieve all theme modifications.
875
* @return array Theme modifications.
877
function get_theme_mods() {
878
$theme_slug = get_option( 'stylesheet' );
879
if ( false === ( $mods = get_option( "theme_mods_$theme_slug" ) ) ) {
880
$theme_name = get_option( 'current_theme' );
881
if ( false === $theme_name )
882
$theme_name = wp_get_theme()->get('Name');
883
$mods = get_option( "mods_$theme_name" ); // Deprecated location.
884
if ( is_admin() && false !== $mods ) {
885
update_option( "theme_mods_$theme_slug", $mods );
886
delete_option( "mods_$theme_name" );
893
* Retrieve theme modification value for the current theme.
895
* If the modification name does not exist, then the $default will be passed
896
* through {@link http://php.net/sprintf sprintf()} PHP function with the first
897
* string the template directory URI and the second string the stylesheet
902
* @param string $name Theme modification name.
903
* @param bool|string $default
906
function get_theme_mod( $name, $default = false ) {
907
$mods = get_theme_mods();
909
if ( isset( $mods[$name] ) ) {
911
* Filter the theme modification, or 'theme_mod', value.
913
* The dynamic portion of the hook name, $name, refers to
914
* the key name of the modification array. For example,
915
* 'header_textcolor', 'header_image', and so on depending
916
* on the theme options.
920
* @param string $current_mod The value of the current theme modification.
922
return apply_filters( "theme_mod_{$name}", $mods[$name] );
925
if ( is_string( $default ) )
926
$default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
928
/** This filter is documented in wp-includes/theme.php */
929
return apply_filters( "theme_mod_{$name}", $default );
933
* Update theme modification value for the current theme.
937
* @param string $name Theme modification name.
938
* @param string $value theme modification value.
940
function set_theme_mod( $name, $value ) {
941
$mods = get_theme_mods();
942
$old_value = isset( $mods[ $name ] ) ? $mods[ $name ] : false;
945
* Filter the theme mod value on save.
947
* The dynamic portion of the hook name, $name, refers to the key name of
948
* the modification array. For example, 'header_textcolor', 'header_image',
949
* and so on depending on the theme options.
953
* @param string $value The new value of the theme mod.
954
* @param string $old_value The current value of the theme mod.
956
$mods[ $name ] = apply_filters( "pre_set_theme_mod_$name", $value, $old_value );
958
$theme = get_option( 'stylesheet' );
959
update_option( "theme_mods_$theme", $mods );
963
* Remove theme modification name from current theme list.
965
* If removing the name also removes all elements, then the entire option will
970
* @param string $name Theme modification name.
973
function remove_theme_mod( $name ) {
974
$mods = get_theme_mods();
976
if ( ! isset( $mods[ $name ] ) )
979
unset( $mods[ $name ] );
981
if ( empty( $mods ) )
982
return remove_theme_mods();
984
$theme = get_option( 'stylesheet' );
985
update_option( "theme_mods_$theme", $mods );
989
* Remove theme modifications option for current theme.
993
function remove_theme_mods() {
994
delete_option( 'theme_mods_' . get_option( 'stylesheet' ) );
997
$theme_name = get_option( 'current_theme' );
998
if ( false === $theme_name )
999
$theme_name = wp_get_theme()->get('Name');
1000
delete_option( 'mods_' . $theme_name );
1004
* Retrieve text color for custom header.
1010
function get_header_textcolor() {
1011
return get_theme_mod('header_textcolor', get_theme_support( 'custom-header', 'default-text-color' ) );
1015
* Display text color for custom header.
1019
function header_textcolor() {
1020
echo get_header_textcolor();
1024
* Whether to display the header text.
1030
function display_header_text() {
1031
if ( ! current_theme_supports( 'custom-header', 'header-text' ) )
1034
$text_color = get_theme_mod( 'header_textcolor', get_theme_support( 'custom-header', 'default-text-color' ) );
1035
return 'blank' != $text_color;
1039
* Retrieve header image for custom header.
1045
function get_header_image() {
1046
$url = get_theme_mod( 'header_image', get_theme_support( 'custom-header', 'default-image' ) );
1048
if ( 'remove-header' == $url )
1051
if ( is_random_header_image() )
1052
$url = get_random_header_image();
1054
return esc_url_raw( set_url_scheme( $url ) );
1058
* Get random header image data from registered images in theme.
1064
* @return string Path to header image
1067
function _get_random_header_data() {
1068
static $_wp_random_header;
1070
if ( empty( $_wp_random_header ) ) {
1071
global $_wp_default_headers;
1072
$header_image_mod = get_theme_mod( 'header_image', '' );
1075
if ( 'random-uploaded-image' == $header_image_mod )
1076
$headers = get_uploaded_header_images();
1077
elseif ( ! empty( $_wp_default_headers ) ) {
1078
if ( 'random-default-image' == $header_image_mod ) {
1079
$headers = $_wp_default_headers;
1081
if ( current_theme_supports( 'custom-header', 'random-default' ) )
1082
$headers = $_wp_default_headers;
1086
if ( empty( $headers ) )
1087
return new stdClass;
1089
$_wp_random_header = (object) $headers[ array_rand( $headers ) ];
1091
$_wp_random_header->url = sprintf( $_wp_random_header->url, get_template_directory_uri(), get_stylesheet_directory_uri() );
1092
$_wp_random_header->thumbnail_url = sprintf( $_wp_random_header->thumbnail_url, get_template_directory_uri(), get_stylesheet_directory_uri() );
1094
return $_wp_random_header;
1098
* Get random header image url from registered images in theme.
1102
* @return string Path to header image
1105
function get_random_header_image() {
1106
$random_image = _get_random_header_data();
1107
if ( empty( $random_image->url ) )
1109
return $random_image->url;
1113
* Check if random header image is in use.
1115
* Always true if user expressly chooses the option in Appearance > Header.
1116
* Also true if theme has multiple header images registered, no specific header image
1117
* is chosen, and theme turns on random headers with add_theme_support().
1121
* @param string $type The random pool to use. any|default|uploaded
1124
function is_random_header_image( $type = 'any' ) {
1125
$header_image_mod = get_theme_mod( 'header_image', get_theme_support( 'custom-header', 'default-image' ) );
1127
if ( 'any' == $type ) {
1128
if ( 'random-default-image' == $header_image_mod || 'random-uploaded-image' == $header_image_mod || ( '' != get_random_header_image() && empty( $header_image_mod ) ) )
1131
if ( "random-$type-image" == $header_image_mod )
1133
elseif ( 'default' == $type && empty( $header_image_mod ) && '' != get_random_header_image() )
1141
* Display header image URL.
1145
function header_image() {
1146
echo esc_url( get_header_image() );
1150
* Get the header images uploaded for the current theme.
1156
function get_uploaded_header_images() {
1157
$header_images = array();
1160
$headers = get_posts( array( 'post_type' => 'attachment', 'meta_key' => '_wp_attachment_is_custom_header', 'meta_value' => get_option('stylesheet'), 'orderby' => 'none', 'nopaging' => true ) );
1162
if ( empty( $headers ) )
1165
foreach ( (array) $headers as $header ) {
1166
$url = esc_url_raw( wp_get_attachment_url( $header->ID ) );
1167
$header_data = wp_get_attachment_metadata( $header->ID );
1168
$header_index = basename($url);
1169
$header_images[$header_index] = array();
1170
$header_images[$header_index]['attachment_id'] = $header->ID;
1171
$header_images[$header_index]['url'] = $url;
1172
$header_images[$header_index]['thumbnail_url'] = $url;
1173
if ( isset( $header_data['width'] ) )
1174
$header_images[$header_index]['width'] = $header_data['width'];
1175
if ( isset( $header_data['height'] ) )
1176
$header_images[$header_index]['height'] = $header_data['height'];
1179
return $header_images;
1183
* Get the header image data.
1189
function get_custom_header() {
1190
global $_wp_default_headers;
1192
if ( is_random_header_image() ) {
1193
$data = _get_random_header_data();
1195
$data = get_theme_mod( 'header_image_data' );
1196
if ( ! $data && current_theme_supports( 'custom-header', 'default-image' ) ) {
1197
$directory_args = array( get_template_directory_uri(), get_stylesheet_directory_uri() );
1199
$data['url'] = $data['thumbnail_url'] = vsprintf( get_theme_support( 'custom-header', 'default-image' ), $directory_args );
1200
if ( ! empty( $_wp_default_headers ) ) {
1201
foreach ( (array) $_wp_default_headers as $default_header ) {
1202
$url = vsprintf( $default_header['url'], $directory_args );
1203
if ( $data['url'] == $url ) {
1204
$data = $default_header;
1205
$data['url'] = $url;
1206
$data['thumbnail_url'] = vsprintf( $data['thumbnail_url'], $directory_args );
1216
'thumbnail_url' => '',
1217
'width' => get_theme_support( 'custom-header', 'width' ),
1218
'height' => get_theme_support( 'custom-header', 'height' ),
1220
return (object) wp_parse_args( $data, $default );
1224
* Register a selection of default headers to be displayed by the custom header admin UI.
1228
* @param array $headers Array of headers keyed by a string id. The ids point to arrays containing 'url', 'thumbnail_url', and 'description' keys.
1230
function register_default_headers( $headers ) {
1231
global $_wp_default_headers;
1233
$_wp_default_headers = array_merge( (array) $_wp_default_headers, (array) $headers );
1237
* Unregister default headers.
1239
* This function must be called after register_default_headers() has already added the
1240
* header you want to remove.
1242
* @see register_default_headers()
1245
* @param string|array $header The header string id (key of array) to remove, or an array thereof.
1246
* @return bool|void A single header returns true on success, false on failure.
1247
* There is currently no return value for multiple headers.
1249
function unregister_default_headers( $header ) {
1250
global $_wp_default_headers;
1251
if ( is_array( $header ) ) {
1252
array_map( 'unregister_default_headers', $header );
1253
} elseif ( isset( $_wp_default_headers[ $header ] ) ) {
1254
unset( $_wp_default_headers[ $header ] );
1262
* Retrieve background image for custom background.
1268
function get_background_image() {
1269
return get_theme_mod('background_image', get_theme_support( 'custom-background', 'default-image' ) );
1273
* Display background image path.
1277
function background_image() {
1278
echo get_background_image();
1282
* Retrieve value for custom background color.
1288
function get_background_color() {
1289
return get_theme_mod('background_color', get_theme_support( 'custom-background', 'default-color' ) );
1293
* Display background color value.
1297
function background_color() {
1298
echo get_background_color();
1302
* Default custom background callback.
1307
function _custom_background_cb() {
1308
// $background is the saved custom image, or the default image.
1309
$background = set_url_scheme( get_background_image() );
1311
// $color is the saved custom color.
1312
// A default has to be specified in style.css. It will not be printed here.
1313
$color = get_background_color();
1315
if ( $color === get_theme_support( 'custom-background', 'default-color' ) ) {
1319
if ( ! $background && ! $color )
1322
$style = $color ? "background-color: #$color;" : '';
1324
if ( $background ) {
1325
$image = " background-image: url('$background');";
1327
$repeat = get_theme_mod( 'background_repeat', get_theme_support( 'custom-background', 'default-repeat' ) );
1328
if ( ! in_array( $repeat, array( 'no-repeat', 'repeat-x', 'repeat-y', 'repeat' ) ) )
1330
$repeat = " background-repeat: $repeat;";
1332
$position = get_theme_mod( 'background_position_x', get_theme_support( 'custom-background', 'default-position-x' ) );
1333
if ( ! in_array( $position, array( 'center', 'right', 'left' ) ) )
1335
$position = " background-position: top $position;";
1337
$attachment = get_theme_mod( 'background_attachment', get_theme_support( 'custom-background', 'default-attachment' ) );
1338
if ( ! in_array( $attachment, array( 'fixed', 'scroll' ) ) )
1339
$attachment = 'scroll';
1340
$attachment = " background-attachment: $attachment;";
1342
$style .= $image . $repeat . $position . $attachment;
1345
<style type="text/css" id="custom-background-css">
1346
body.custom-background { <?php echo trim( $style ); ?> }
1352
* Add callback for custom TinyMCE editor stylesheets.
1354
* The parameter $stylesheet is the name of the stylesheet, relative to
1355
* the theme root. It also accepts an array of stylesheets.
1356
* It is optional and defaults to 'editor-style.css'.
1358
* This function automatically adds another stylesheet with -rtl prefix, e.g. editor-style-rtl.css.
1359
* If that file doesn't exist, it is removed before adding the stylesheet(s) to TinyMCE.
1360
* If an array of stylesheets is passed to add_editor_style(),
1361
* RTL is only added for the first stylesheet.
1363
* Since version 3.4 the TinyMCE body has .rtl CSS class.
1364
* It is a better option to use that class and add any RTL styles to the main stylesheet.
1368
* @param mixed $stylesheet Optional. Stylesheet name or array thereof, relative to theme root.
1369
* Defaults to 'editor-style.css'
1371
function add_editor_style( $stylesheet = 'editor-style.css' ) {
1373
add_theme_support( 'editor-style' );
1378
global $editor_styles;
1379
$editor_styles = (array) $editor_styles;
1380
$stylesheet = (array) $stylesheet;
1382
$rtl_stylesheet = str_replace('.css', '-rtl.css', $stylesheet[0]);
1383
$stylesheet[] = $rtl_stylesheet;
1386
$editor_styles = array_merge( $editor_styles, $stylesheet );
1390
* Removes all visual editor stylesheets.
1394
* @return bool True on success, false if there were no stylesheets to remove.
1396
function remove_editor_styles() {
1397
if ( ! current_theme_supports( 'editor-style' ) )
1399
_remove_theme_support( 'editor-style' );
1401
$GLOBALS['editor_styles'] = array();
1406
* Retrieve any registered editor stylesheets
1410
* @global $editor_styles Registered editor stylesheets
1412
* @return array If registered, a list of editor stylesheet URLs.
1414
function get_editor_stylesheets() {
1415
$stylesheets = array();
1416
// load editor_style.css if the current theme supports it
1417
if ( ! empty( $GLOBALS['editor_styles'] ) && is_array( $GLOBALS['editor_styles'] ) ) {
1418
$editor_styles = $GLOBALS['editor_styles'];
1420
$editor_styles = array_unique( array_filter( $editor_styles ) );
1421
$style_uri = get_stylesheet_directory_uri();
1422
$style_dir = get_stylesheet_directory();
1424
// Support externally referenced styles (like, say, fonts).
1425
foreach ( $editor_styles as $key => $file ) {
1426
if ( preg_match( '~^(https?:)?//~', $file ) ) {
1427
$stylesheets[] = esc_url_raw( $file );
1428
unset( $editor_styles[ $key ] );
1432
// Look in a parent theme first, that way child theme CSS overrides.
1433
if ( is_child_theme() ) {
1434
$template_uri = get_template_directory_uri();
1435
$template_dir = get_template_directory();
1437
foreach ( $editor_styles as $key => $file ) {
1438
if ( $file && file_exists( "$template_dir/$file" ) ) {
1439
$stylesheets[] = "$template_uri/$file";
1444
foreach ( $editor_styles as $file ) {
1445
if ( $file && file_exists( "$style_dir/$file" ) ) {
1446
$stylesheets[] = "$style_uri/$file";
1450
return $stylesheets;
1454
* Allows a theme to register its support of a certain feature
1456
* Must be called in the theme's functions.php file to work.
1457
* If attached to a hook, it must be after_setup_theme.
1458
* The init hook may be too late for some features.
1462
* @param string $feature The feature being added.
1463
* @return void|bool False on failure, void otherwise.
1465
function add_theme_support( $feature ) {
1466
global $_wp_theme_features;
1468
if ( func_num_args() == 1 )
1471
$args = array_slice( func_get_args(), 1 );
1473
switch ( $feature ) {
1474
case 'post-formats' :
1475
if ( is_array( $args[0] ) )
1476
$args[0] = array_intersect( $args[0], array_keys( get_post_format_slugs() ) );
1480
// You can't just pass 'html5', you need to pass an array of types.
1481
if ( empty( $args[0] ) ) {
1482
// Build an array of types for back-compat.
1483
$args = array( 0 => array( 'comment-list', 'comment-form', 'search-form' ) );
1484
} elseif ( ! is_array( $args[0] ) ) {
1485
_doing_it_wrong( "add_theme_support( 'html5' )", 'You need to pass an array of types.', '3.6.1' );
1489
// Calling 'html5' again merges, rather than overwrites.
1490
if ( isset( $_wp_theme_features['html5'] ) )
1491
$args[0] = array_merge( $_wp_theme_features['html5'][0], $args[0] );
1494
case 'custom-header-uploads' :
1495
return add_theme_support( 'custom-header', array( 'uploads' => true ) );
1497
case 'custom-header' :
1498
if ( ! is_array( $args ) )
1499
$args = array( 0 => array() );
1502
'default-image' => '',
1503
'random-default' => false,
1506
'flex-height' => false,
1507
'flex-width' => false,
1508
'default-text-color' => '',
1509
'header-text' => true,
1511
'wp-head-callback' => '',
1512
'admin-head-callback' => '',
1513
'admin-preview-callback' => '',
1516
$jit = isset( $args[0]['__jit'] );
1517
unset( $args[0]['__jit'] );
1519
// Merge in data from previous add_theme_support() calls.
1520
// The first value registered wins. (A child theme is set up first.)
1521
if ( isset( $_wp_theme_features['custom-header'] ) )
1522
$args[0] = wp_parse_args( $_wp_theme_features['custom-header'][0], $args[0] );
1524
// Load in the defaults at the end, as we need to insure first one wins.
1525
// This will cause all constants to be defined, as each arg will then be set to the default.
1527
$args[0] = wp_parse_args( $args[0], $defaults );
1529
// If a constant was defined, use that value. Otherwise, define the constant to ensure
1530
// the constant is always accurate (and is not defined later, overriding our value).
1531
// As stated above, the first value wins.
1532
// Once we get to wp_loaded (just-in-time), define any constants we haven't already.
1533
// Constants are lame. Don't reference them. This is just for backwards compatibility.
1535
if ( defined( 'NO_HEADER_TEXT' ) )
1536
$args[0]['header-text'] = ! NO_HEADER_TEXT;
1537
elseif ( isset( $args[0]['header-text'] ) )
1538
define( 'NO_HEADER_TEXT', empty( $args[0]['header-text'] ) );
1540
if ( defined( 'HEADER_IMAGE_WIDTH' ) )
1541
$args[0]['width'] = (int) HEADER_IMAGE_WIDTH;
1542
elseif ( isset( $args[0]['width'] ) )
1543
define( 'HEADER_IMAGE_WIDTH', (int) $args[0]['width'] );
1545
if ( defined( 'HEADER_IMAGE_HEIGHT' ) )
1546
$args[0]['height'] = (int) HEADER_IMAGE_HEIGHT;
1547
elseif ( isset( $args[0]['height'] ) )
1548
define( 'HEADER_IMAGE_HEIGHT', (int) $args[0]['height'] );
1550
if ( defined( 'HEADER_TEXTCOLOR' ) )
1551
$args[0]['default-text-color'] = HEADER_TEXTCOLOR;
1552
elseif ( isset( $args[0]['default-text-color'] ) )
1553
define( 'HEADER_TEXTCOLOR', $args[0]['default-text-color'] );
1555
if ( defined( 'HEADER_IMAGE' ) )
1556
$args[0]['default-image'] = HEADER_IMAGE;
1557
elseif ( isset( $args[0]['default-image'] ) )
1558
define( 'HEADER_IMAGE', $args[0]['default-image'] );
1560
if ( $jit && ! empty( $args[0]['default-image'] ) )
1561
$args[0]['random-default'] = false;
1563
// If headers are supported, and we still don't have a defined width or height,
1564
// we have implicit flex sizes.
1566
if ( empty( $args[0]['width'] ) && empty( $args[0]['flex-width'] ) )
1567
$args[0]['flex-width'] = true;
1568
if ( empty( $args[0]['height'] ) && empty( $args[0]['flex-height'] ) )
1569
$args[0]['flex-height'] = true;
1574
case 'custom-background' :
1575
if ( ! is_array( $args ) )
1576
$args = array( 0 => array() );
1579
'default-image' => '',
1580
'default-repeat' => 'repeat',
1581
'default-position-x' => 'left',
1582
'default-attachment' => 'scroll',
1583
'default-color' => '',
1584
'wp-head-callback' => '_custom_background_cb',
1585
'admin-head-callback' => '',
1586
'admin-preview-callback' => '',
1589
$jit = isset( $args[0]['__jit'] );
1590
unset( $args[0]['__jit'] );
1592
// Merge in data from previous add_theme_support() calls. The first value registered wins.
1593
if ( isset( $_wp_theme_features['custom-background'] ) )
1594
$args[0] = wp_parse_args( $_wp_theme_features['custom-background'][0], $args[0] );
1597
$args[0] = wp_parse_args( $args[0], $defaults );
1599
if ( defined( 'BACKGROUND_COLOR' ) )
1600
$args[0]['default-color'] = BACKGROUND_COLOR;
1601
elseif ( isset( $args[0]['default-color'] ) || $jit )
1602
define( 'BACKGROUND_COLOR', $args[0]['default-color'] );
1604
if ( defined( 'BACKGROUND_IMAGE' ) )
1605
$args[0]['default-image'] = BACKGROUND_IMAGE;
1606
elseif ( isset( $args[0]['default-image'] ) || $jit )
1607
define( 'BACKGROUND_IMAGE', $args[0]['default-image'] );
1612
$_wp_theme_features[ $feature ] = $args;
1616
* Registers the internal custom header and background routines.
1621
function _custom_header_background_just_in_time() {
1622
global $custom_image_header, $custom_background;
1624
if ( current_theme_supports( 'custom-header' ) ) {
1625
// In case any constants were defined after an add_custom_image_header() call, re-run.
1626
add_theme_support( 'custom-header', array( '__jit' => true ) );
1628
$args = get_theme_support( 'custom-header' );
1629
if ( $args[0]['wp-head-callback'] )
1630
add_action( 'wp_head', $args[0]['wp-head-callback'] );
1633
require_once( ABSPATH . 'wp-admin/custom-header.php' );
1634
$custom_image_header = new Custom_Image_Header( $args[0]['admin-head-callback'], $args[0]['admin-preview-callback'] );
1638
if ( current_theme_supports( 'custom-background' ) ) {
1639
// In case any constants were defined after an add_custom_background() call, re-run.
1640
add_theme_support( 'custom-background', array( '__jit' => true ) );
1642
$args = get_theme_support( 'custom-background' );
1643
add_action( 'wp_head', $args[0]['wp-head-callback'] );
1646
require_once( ABSPATH . 'wp-admin/custom-background.php' );
1647
$custom_background = new Custom_Background( $args[0]['admin-head-callback'], $args[0]['admin-preview-callback'] );
1651
add_action( 'wp_loaded', '_custom_header_background_just_in_time' );
1654
* Gets the theme support arguments passed when registering that support
1658
* @param string $feature the feature to check
1659
* @return array The array of extra arguments
1661
function get_theme_support( $feature ) {
1662
global $_wp_theme_features;
1663
if ( ! isset( $_wp_theme_features[ $feature ] ) )
1666
if ( func_num_args() <= 1 )
1667
return $_wp_theme_features[ $feature ];
1669
$args = array_slice( func_get_args(), 1 );
1670
switch ( $feature ) {
1671
case 'custom-header' :
1672
case 'custom-background' :
1673
if ( isset( $_wp_theme_features[ $feature ][0][ $args[0] ] ) )
1674
return $_wp_theme_features[ $feature ][0][ $args[0] ];
1678
return $_wp_theme_features[ $feature ];
1683
* Allows a theme to de-register its support of a certain feature
1685
* Should be called in the theme's functions.php file. Generally would
1686
* be used for child themes to override support from the parent theme.
1689
* @see add_theme_support()
1690
* @param string $feature the feature being added
1691
* @return bool Whether feature was removed.
1693
function remove_theme_support( $feature ) {
1694
// Blacklist: for internal registrations not used directly by themes.
1695
if ( in_array( $feature, array( 'editor-style', 'widgets', 'menus' ) ) )
1698
return _remove_theme_support( $feature );
1702
* Do not use. Removes theme support internally, ignorant of the blacklist.
1707
function _remove_theme_support( $feature ) {
1708
global $_wp_theme_features;
1710
switch ( $feature ) {
1711
case 'custom-header-uploads' :
1712
if ( ! isset( $_wp_theme_features['custom-header'] ) )
1714
add_theme_support( 'custom-header', array( 'uploads' => false ) );
1715
return; // Do not continue - custom-header-uploads no longer exists.
1718
if ( ! isset( $_wp_theme_features[ $feature ] ) )
1721
switch ( $feature ) {
1722
case 'custom-header' :
1723
if ( ! did_action( 'wp_loaded' ) )
1725
$support = get_theme_support( 'custom-header' );
1726
if ( $support[0]['wp-head-callback'] )
1727
remove_action( 'wp_head', $support[0]['wp-head-callback'] );
1728
remove_action( 'admin_menu', array( $GLOBALS['custom_image_header'], 'init' ) );
1729
unset( $GLOBALS['custom_image_header'] );
1732
case 'custom-background' :
1733
if ( ! did_action( 'wp_loaded' ) )
1735
$support = get_theme_support( 'custom-background' );
1736
remove_action( 'wp_head', $support[0]['wp-head-callback'] );
1737
remove_action( 'admin_menu', array( $GLOBALS['custom_background'], 'init' ) );
1738
unset( $GLOBALS['custom_background'] );
1742
unset( $_wp_theme_features[ $feature ] );
1747
* Checks a theme's support for a given feature
1750
* @param string $feature the feature being checked
1753
function current_theme_supports( $feature ) {
1754
global $_wp_theme_features;
1756
if ( 'custom-header-uploads' == $feature )
1757
return current_theme_supports( 'custom-header', 'uploads' );
1759
if ( !isset( $_wp_theme_features[$feature] ) )
1762
// If no args passed then no extra checks need be performed
1763
if ( func_num_args() <= 1 )
1766
$args = array_slice( func_get_args(), 1 );
1768
switch ( $feature ) {
1769
case 'post-thumbnails':
1770
// post-thumbnails can be registered for only certain content/post types by passing
1771
// an array of types to add_theme_support(). If no array was passed, then
1772
// any type is accepted
1773
if ( true === $_wp_theme_features[$feature] ) // Registered for all types
1775
$content_type = $args[0];
1776
return in_array( $content_type, $_wp_theme_features[$feature][0] );
1779
case 'post-formats':
1780
// specific post formats can be registered by passing an array of types to
1781
// add_theme_support()
1783
// Specific areas of HTML5 support *must* be passed via an array to add_theme_support()
1786
return in_array( $type, $_wp_theme_features[$feature][0] );
1788
case 'custom-header':
1789
case 'custom-background' :
1790
// specific custom header and background capabilities can be registered by passing
1791
// an array to add_theme_support()
1792
$header_support = $args[0];
1793
return ( isset( $_wp_theme_features[$feature][0][$header_support] ) && $_wp_theme_features[$feature][0][$header_support] );
1797
* Filter whether the current theme supports a specific feature.
1799
* The dynamic portion of the hook name, $feature, refers to
1800
* the specific theme feature. Possible values include 'post-formats',
1801
* 'post-thumbnails', 'custom-background', 'custom-header', 'menus',
1802
* 'automatic-feed-links', and 'html5'.
1806
* @param bool true Whether the current theme supports the given feature. Default true.
1807
* @param array $args Array of arguments for the feature.
1808
* @param string $feature The theme feature.
1810
return apply_filters( "current_theme_supports-{$feature}", true, $args, $_wp_theme_features[$feature] );
1814
* Checks a theme's support for a given feature before loading the functions which implement it.
1818
* @param string $feature The feature being checked.
1819
* @param string $include Path to the file.
1820
* @return bool True if the current theme supports the supplied feature, false otherwise.
1822
function require_if_theme_supports( $feature, $include ) {
1823
if ( current_theme_supports( $feature ) ) {
1824
require ( $include );
1831
* Checks an attachment being deleted to see if it's a header or background image.
1833
* If true it removes the theme modification which would be pointing at the deleted
1838
* @param int $id the attachment id
1840
function _delete_attachment_theme_mod( $id ) {
1841
$attachment_image = wp_get_attachment_url( $id );
1842
$header_image = get_header_image();
1843
$background_image = get_background_image();
1845
if ( $header_image && $header_image == $attachment_image )
1846
remove_theme_mod( 'header_image' );
1848
if ( $background_image && $background_image == $attachment_image )
1849
remove_theme_mod( 'background_image' );
1852
add_action( 'delete_attachment', '_delete_attachment_theme_mod' );
1855
* Checks if a theme has been changed and runs 'after_switch_theme' hook on the next WP load
1859
function check_theme_switched() {
1860
if ( $stylesheet = get_option( 'theme_switched' ) ) {
1861
$old_theme = wp_get_theme( $stylesheet );
1863
// Prevent retrieve_widgets() from running since Customizer already called it up front
1864
if ( get_option( 'theme_switched_via_customizer' ) ) {
1865
remove_action( 'after_switch_theme', '_wp_sidebars_changed' );
1866
update_option( 'theme_switched_via_customizer', false );
1869
if ( $old_theme->exists() ) {
1871
* Fires on the first WP load after a theme switch if the old theme still exists.
1873
* This action fires multiple times and the parameters differs
1874
* according to the context, if the old theme exists or not.
1875
* If the old theme is missing, the parameter will be the slug
1880
* @param string $old_name Old theme name.
1881
* @param WP_Theme $old_theme WP_Theme instance of the old theme.
1883
do_action( 'after_switch_theme', $old_theme->get( 'Name' ), $old_theme );
1885
/** This action is documented in wp-includes/theme.php */
1886
do_action( 'after_switch_theme', $stylesheet );
1889
update_option( 'theme_switched', false );
1894
* Includes and instantiates the WP_Customize_Manager class.
1896
* Fires when ?wp_customize=on or on wp-admin/customize.php.
1900
function _wp_customize_include() {
1901
if ( ! ( ( isset( $_REQUEST['wp_customize'] ) && 'on' == $_REQUEST['wp_customize'] )
1902
|| ( is_admin() && 'customize.php' == basename( $_SERVER['PHP_SELF'] ) )
1906
require( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
1907
// Init Customize class
1908
$GLOBALS['wp_customize'] = new WP_Customize_Manager;
1910
add_action( 'plugins_loaded', '_wp_customize_include' );
1913
* Adds settings for the customize-loader script.
1917
function _wp_customize_loader_settings() {
1920
$admin_origin = parse_url( admin_url() );
1921
$home_origin = parse_url( home_url() );
1922
$cross_domain = ( strtolower( $admin_origin[ 'host' ] ) != strtolower( $home_origin[ 'host' ] ) );
1925
'mobile' => wp_is_mobile(),
1926
'ios' => wp_is_mobile() && preg_match( '/iPad|iPod|iPhone/', $_SERVER['HTTP_USER_AGENT'] ),
1930
'url' => esc_url( admin_url( 'customize.php' ) ),
1931
'isCrossDomain' => $cross_domain,
1932
'browser' => $browser,
1934
'saveAlert' => __( 'The changes you made will be lost if you navigate away from this page.' ),
1938
$script = 'var _wpCustomizeLoaderSettings = ' . json_encode( $settings ) . ';';
1940
$data = $wp_scripts->get_data( 'customize-loader', 'data' );
1942
$script = "$data\n$script";
1944
$wp_scripts->add_data( 'customize-loader', 'data', $script );
1946
add_action( 'admin_enqueue_scripts', '_wp_customize_loader_settings' );
1949
* Returns a URL to load the theme customizer.
1953
* @param string $stylesheet Optional. Theme to customize. Defaults to current theme.
1954
* The theme's stylesheet will be urlencoded if necessary.
1956
function wp_customize_url( $stylesheet = null ) {
1957
$url = admin_url( 'customize.php' );
1959
$url .= '?theme=' . urlencode( $stylesheet );
1960
return esc_url( $url );
1964
* Prints a script to check whether or not the customizer is supported,
1965
* and apply either the no-customize-support or customize-support class
1968
* This function MUST be called inside the body tag.
1970
* Ideally, call this function immediately after the body tag is opened.
1971
* This prevents a flash of unstyled content.
1973
* It is also recommended that you add the "no-customize-support" class
1974
* to the body tag by default.
1978
function wp_customize_support_script() {
1979
$admin_origin = parse_url( admin_url() );
1980
$home_origin = parse_url( home_url() );
1981
$cross_domain = ( strtolower( $admin_origin[ 'host' ] ) != strtolower( $home_origin[ 'host' ] ) );
1984
<script type="text/javascript">
1986
var request, b = document.body, c = 'className', cs = 'customize-support', rcs = new RegExp('(^|\\s+)(no-)?'+cs+'(\\s+|$)');
1988
<?php if ( $cross_domain ): ?>
1989
request = (function(){ var xhr = new XMLHttpRequest(); return ('withCredentials' in xhr); })();
1994
b[c] = b[c].replace( rcs, ' ' );
1995
b[c] += ( window.postMessage && request ? ' ' : ' no-' ) + cs;
2002
* Whether the site is being previewed in the Customizer.
2006
* @global WP_Customize_Manager $wp_customize Customizer instance.
2008
* @return bool True if the site is being previewed in the Customizer, false otherwise.
2010
function is_customize_preview() {
2011
global $wp_customize;
2013
return is_a( $wp_customize, 'WP_Customize_Manager' ) && $wp_customize->is_preview();