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<?php
/**
* WordPress Theme Administration API
*
* @package WordPress
* @subpackage Administration
*/
/**
* Remove a theme
*
* @since 2.8.0
*
* @global WP_Filesystem_Base $wp_filesystem Subclass
*
* @param string $stylesheet Stylesheet of the theme to delete
* @param string $redirect Redirect to page when complete.
* @return void|bool|WP_Error When void, echoes content.
*/
function delete_theme($stylesheet, $redirect = '') {
global $wp_filesystem;
if ( empty($stylesheet) )
return false;
ob_start();
if ( empty( $redirect ) )
$redirect = wp_nonce_url('themes.php?action=delete&stylesheet=' . urlencode( $stylesheet ), 'delete-theme_' . $stylesheet);
if ( false === ($credentials = request_filesystem_credentials($redirect)) ) {
$data = ob_get_clean();
if ( ! empty($data) ){
include_once( ABSPATH . 'wp-admin/admin-header.php');
echo $data;
include( ABSPATH . 'wp-admin/admin-footer.php');
exit;
}
return;
}
if ( ! WP_Filesystem($credentials) ) {
request_filesystem_credentials($redirect, '', true); // Failed to connect, Error and request again
$data = ob_get_clean();
if ( ! empty($data) ) {
include_once( ABSPATH . 'wp-admin/admin-header.php');
echo $data;
include( ABSPATH . 'wp-admin/admin-footer.php');
exit;
}
return;
}
if ( ! is_object($wp_filesystem) )
return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
if ( is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code() )
return new WP_Error('fs_error', __('Filesystem error.'), $wp_filesystem->errors);
// Get the base plugin folder.
$themes_dir = $wp_filesystem->wp_themes_dir();
if ( empty( $themes_dir ) ) {
return new WP_Error( 'fs_no_themes_dir', __( 'Unable to locate WordPress theme directory.' ) );
}
$themes_dir = trailingslashit( $themes_dir );
$theme_dir = trailingslashit( $themes_dir . $stylesheet );
$deleted = $wp_filesystem->delete( $theme_dir, true );
if ( ! $deleted ) {
return new WP_Error( 'could_not_remove_theme', sprintf( __( 'Could not fully remove the theme %s.' ), $stylesheet ) );
}
$theme_translations = wp_get_installed_translations( 'themes' );
// Remove language files, silently.
if ( ! empty( $theme_translations[ $stylesheet ] ) ) {
$translations = $theme_translations[ $stylesheet ];
foreach ( $translations as $translation => $data ) {
$wp_filesystem->delete( WP_LANG_DIR . '/themes/' . $stylesheet . '-' . $translation . '.po' );
$wp_filesystem->delete( WP_LANG_DIR . '/themes/' . $stylesheet . '-' . $translation . '.mo' );
}
}
// Force refresh of theme update information.
delete_site_transient( 'update_themes' );
return true;
}
/**
* Get the Page Templates available in this theme
*
* @since 1.5.0
*
* @param WP_Post|null $post Optional. The post being edited, provided for context.
* @return array Key is the template name, value is the filename of the template
*/
function get_page_templates( $post = null ) {
return array_flip( wp_get_theme()->get_page_templates( $post ) );
}
/**
* Tidies a filename for url display by the theme editor.
*
* @since 2.9.0
* @access private
*
* @param string $fullpath Full path to the theme file
* @param string $containingfolder Path of the theme parent folder
* @return string
*/
function _get_template_edit_filename($fullpath, $containingfolder) {
return str_replace(dirname(dirname( $containingfolder )) , '', $fullpath);
}
/**
* Check if there is an update for a theme available.
*
* Will display link, if there is an update available.
*
* @since 2.7.0
* @see get_theme_update_available()
*
* @param WP_Theme $theme Theme data object.
*/
function theme_update_available( $theme ) {
echo get_theme_update_available( $theme );
}
/**
* Retrieve the update link if there is a theme update available.
*
* Will return a link if there is an update available.
*
* @since 3.8.0
*
* @staticvar object $themes_update
*
* @param WP_Theme $theme WP_Theme object.
* @return false|string HTML for the update link, or false if invalid info was passed.
*/
function get_theme_update_available( $theme ) {
static $themes_update = null;
if ( !current_user_can('update_themes' ) )
return false;
if ( !isset($themes_update) )
$themes_update = get_site_transient('update_themes');
if ( ! ( $theme instanceof WP_Theme ) ) {
return false;
}
$stylesheet = $theme->get_stylesheet();
$html = '';
if ( isset($themes_update->response[ $stylesheet ]) ) {
$update = $themes_update->response[ $stylesheet ];
$theme_name = $theme->display('Name');
$details_url = add_query_arg(array('TB_iframe' => 'true', 'width' => 1024, 'height' => 800), $update['url']); //Theme browser inside WP? replace this, Also, theme preview JS will override this on the available list.
$update_url = wp_nonce_url( admin_url( 'update.php?action=upgrade-theme&theme=' . urlencode( $stylesheet ) ), 'upgrade-theme_' . $stylesheet );
if ( !is_multisite() ) {
if ( ! current_user_can('update_themes') ) {
/* translators: 1: theme name, 2: theme details URL, 3: accessibility text, 4: version number */
$html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" aria-label="%3$s">View version %4$s details</a>.' ) . '</strong></p>',
$theme_name,
esc_url( $details_url ),
/* translators: 1: theme name, 2: version number */
esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme_name, $update['new_version'] ) ),
$update['new_version']
);
} elseif ( empty( $update['package'] ) ) {
/* translators: 1: theme name, 2: theme details URL, 3: accessibility text, 4: version number */
$html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" aria-label="%3$s">View version %4$s details</a>. <em>Automatic update is unavailable for this theme.</em>' ) . '</strong></p>',
$theme_name,
esc_url( $details_url ),
/* translators: 1: theme name, 2: version number */
esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme_name, $update['new_version'] ) ),
$update['new_version']
);
} else {
/* translators: 1: theme name, 2: theme details URL, 3: accessibility text, 4: version number, 5: update URL, 6: accessibility text */
$html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" aria-label="%3$s">View version %4$s details</a> or <a href="%5$s" aria-label="%6$s">update now</a>.' ) . '</strong></p>',
$theme_name,
esc_url( $details_url ),
/* translators: 1: theme name, 2: version number */
esc_attr( sprintf( __( 'View %1$s version %2$s details' ), $theme_name, $update['new_version'] ) ),
$update['new_version'],
$update_url,
/* translators: %s: theme name */
esc_attr( sprintf( __( 'Update %s now' ), $theme_name ) )
);
}
}
}
return $html;
}
/**
* Retrieve list of WordPress theme features (aka theme tags)
*
* @since 3.1.0
*
* @param bool $api Optional. Whether try to fetch tags from the WordPress.org API. Defaults to true.
* @return array Array of features keyed by category with translations keyed by slug.
*/
function get_theme_feature_list( $api = true ) {
// Hard-coded list is used if api not accessible.
$features = array(
__( 'Colors' ) => array(
'black' => __( 'Black' ),
'blue' => __( 'Blue' ),
'brown' => __( 'Brown' ),
'gray' => __( 'Gray' ),
'green' => __( 'Green' ),
'orange' => __( 'Orange' ),
'pink' => __( 'Pink' ),
'purple' => __( 'Purple' ),
'red' => __( 'Red' ),
'silver' => __( 'Silver' ),
'tan' => __( 'Tan' ),
'white' => __( 'White' ),
'yellow' => __( 'Yellow' ),
'dark' => __( 'Dark' ),
'light' => __( 'Light' ),
),
__( 'Layout' ) => array(
'fixed-layout' => __( 'Fixed Layout' ),
'fluid-layout' => __( 'Fluid Layout' ),
'responsive-layout' => __( 'Responsive Layout' ),
'one-column' => __( 'One Column' ),
'two-columns' => __( 'Two Columns' ),
'three-columns' => __( 'Three Columns' ),
'four-columns' => __( 'Four Columns' ),
'left-sidebar' => __( 'Left Sidebar' ),
'right-sidebar' => __( 'Right Sidebar' ),
),
__( 'Features' ) => array(
'accessibility-ready' => __( 'Accessibility Ready' ),
'blavatar' => __( 'Blavatar' ),
'buddypress' => __( 'BuddyPress' ),
'custom-background' => __( 'Custom Background' ),
'custom-colors' => __( 'Custom Colors' ),
'custom-header' => __( 'Custom Header' ),
'custom-menu' => __( 'Custom Menu' ),
'editor-style' => __( 'Editor Style' ),
'featured-image-header' => __( 'Featured Image Header' ),
'featured-images' => __( 'Featured Images' ),
'flexible-header' => __( 'Flexible Header' ),
'front-page-post-form' => __( 'Front Page Posting' ),
'full-width-template' => __( 'Full Width Template' ),
'microformats' => __( 'Microformats' ),
'post-formats' => __( 'Post Formats' ),
'rtl-language-support' => __( 'RTL Language Support' ),
'sticky-post' => __( 'Sticky Post' ),
'theme-options' => __( 'Theme Options' ),
'threaded-comments' => __( 'Threaded Comments' ),
'translation-ready' => __( 'Translation Ready' ),
),
__( 'Subject' ) => array(
'holiday' => __( 'Holiday' ),
'photoblogging' => __( 'Photoblogging' ),
'seasonal' => __( 'Seasonal' ),
)
);
if ( ! $api || ! current_user_can( 'install_themes' ) )
return $features;
if ( !$feature_list = get_site_transient( 'wporg_theme_feature_list' ) )
set_site_transient( 'wporg_theme_feature_list', array(), 3 * HOUR_IN_SECONDS );
if ( !$feature_list ) {
$feature_list = themes_api( 'feature_list', array() );
if ( is_wp_error( $feature_list ) )
return $features;
}
if ( !$feature_list )
return $features;
set_site_transient( 'wporg_theme_feature_list', $feature_list, 3 * HOUR_IN_SECONDS );
$category_translations = array(
'Colors' => __( 'Colors' ),
'Layout' => __( 'Layout' ),
'Features' => __( 'Features' ),
'Subject' => __( 'Subject' )
);
// Loop over the wporg canonical list and apply translations
$wporg_features = array();
foreach ( (array) $feature_list as $feature_category => $feature_items ) {
if ( isset($category_translations[$feature_category]) )
$feature_category = $category_translations[$feature_category];
$wporg_features[$feature_category] = array();
foreach ( $feature_items as $feature ) {
if ( isset($features[$feature_category][$feature]) )
$wporg_features[$feature_category][$feature] = $features[$feature_category][$feature];
else
$wporg_features[$feature_category][$feature] = $feature;
}
}
return $wporg_features;
}
/**
* Retrieves theme installer pages from the WordPress.org Themes API.
*
* It is possible for a theme to override the Themes API result with three
* filters. Assume this is for themes, which can extend on the Theme Info to
* offer more choices. This is very powerful and must be used with care, when
* overriding the filters.
*
* The first filter, {@see 'themes_api_args'}, is for the args and gives the action
* as the second parameter. The hook for {@see 'themes_api_args'} must ensure that
* an object is returned.
*
* The second filter, {@see 'themes_api'}, allows a plugin to override the WordPress.org
* Theme API entirely. If `$action` is 'query_themes', 'theme_information', or 'feature_list',
* an object MUST be passed. If `$action` is 'hot_tags`, an array should be passed.
*
* Finally, the third filter, {@see 'themes_api_result'}, makes it possible to filter the
* response object or array, depending on the `$action` type.
*
* Supported arguments per action:
*
* | Argument Name | 'query_themes' | 'theme_information' | 'hot_tags' | 'feature_list' |
* | -------------------| :------------: | :-----------------: | :--------: | :--------------: |
* | `$slug` | No | Yes | No | No |
* | `$per_page` | Yes | No | No | No |
* | `$page` | Yes | No | No | No |
* | `$number` | No | No | Yes | No |
* | `$search` | Yes | No | No | No |
* | `$tag` | Yes | No | No | No |
* | `$author` | Yes | No | No | No |
* | `$user` | Yes | No | No | No |
* | `$browse` | Yes | No | No | No |
* | `$locale` | Yes | Yes | No | No |
* | `$fields` | Yes | Yes | No | No |
*
* @since 2.8.0
*
* @param string $action API action to perform: 'query_themes', 'theme_information',
* 'hot_tags' or 'feature_list'.
* @param array|object $args {
* Optional. Array or object of arguments to serialize for the Plugin Info API.
*
* @type string $slug The plugin slug. Default empty.
* @type int $per_page Number of themes per page. Default 24.
* @type int $page Number of current page. Default 1.
* @type int $number Number of tags to be queried.
* @type string $search A search term. Default empty.
* @type string $tag Tag to filter themes. Default empty.
* @type string $author Username of an author to filter themes. Default empty.
* @type string $user Username to query for their favorites. Default empty.
* @type string $browse Browse view: 'featured', 'popular', 'updated', 'favorites'.
* @type string $locale Locale to provide context-sensitive results. Default is the value of get_locale().
* @type array $fields {
* Array of fields which should or should not be returned.
*
* @type bool $description Whether to return the theme full description. Default false.
* @type bool $sections Whether to return the theme readme sections: description, installation,
* FAQ, screenshots, other notes, and changelog. Default false.
* @type bool $rating Whether to return the rating in percent and total number of ratings.
* Default false.
* @type bool $ratings Whether to return the number of rating for each star (1-5). Default false.
* @type bool $downloaded Whether to return the download count. Default false.
* @type bool $downloadlink Whether to return the download link for the package. Default false.
* @type bool $last_updated Whether to return the date of the last update. Default false.
* @type bool $tags Whether to return the assigned tags. Default false.
* @type bool $homepage Whether to return the theme homepage link. Default false.
* @type bool $screenshots Whether to return the screenshots. Default false.
* @type int $screenshot_count Number of screenshots to return. Default 1.
* @type bool $screenshot_url Whether to return the URL of the first screenshot. Default false.
* @type bool $photon_screenshots Whether to return the screenshots via Photon. Default false.
* @type bool $template Whether to return the slug of the parent theme. Default false.
* @type bool $parent Whether to return the slug, name and homepage of the parent theme. Default false.
* @type bool $versions Whether to return the list of all available versions. Default false.
* @type bool $theme_url Whether to return theme's URL. Default false.
* @type bool $extended_author Whether to return nicename or nicename and display name. Default false.
* }
* }
* @return object|array|WP_Error Response object or array on success, WP_Error on failure. See the
* {@link https://developer.wordpress.org/reference/functions/themes_api/ function reference article}
* for more information on the make-up of possible return objects depending on the value of `$action`.
*/
function themes_api( $action, $args = array() ) {
if ( is_array( $args ) ) {
$args = (object) $args;
}
if ( ! isset( $args->per_page ) ) {
$args->per_page = 24;
}
if ( ! isset( $args->locale ) ) {
$args->locale = get_locale();
}
/**
* Filter arguments used to query for installer pages from the WordPress.org Themes API.
*
* Important: An object MUST be returned to this filter.
*
* @since 2.8.0
*
* @param object $args Arguments used to query for installer pages from the WordPress.org Themes API.
* @param string $action Requested action. Likely values are 'theme_information',
* 'feature_list', or 'query_themes'.
*/
$args = apply_filters( 'themes_api_args', $args, $action );
/**
* Filter whether to override the WordPress.org Themes API.
*
* Passing a non-false value will effectively short-circuit the WordPress.org API request.
*
* If `$action` is 'query_themes', 'theme_information', or 'feature_list', an object MUST
* be passed. If `$action` is 'hot_tags`, an array should be passed.
*
* @since 2.8.0
*
* @param false|object|array $override Whether to override the WordPress.org Themes API. Default false.
* @param string $action Requested action. Likely values are 'theme_information',
* 'feature_list', or 'query_themes'.
* @param object $args Arguments used to query for installer pages from the Themes API.
*/
$res = apply_filters( 'themes_api', false, $action, $args );
if ( ! $res ) {
$url = $http_url = 'http://api.wordpress.org/themes/info/1.0/';
if ( $ssl = wp_http_supports( array( 'ssl' ) ) )
$url = set_url_scheme( $url, 'https' );
$http_args = array(
'body' => array(
'action' => $action,
'request' => serialize( $args )
)
);
$request = wp_remote_post( $url, $http_args );
if ( $ssl && is_wp_error( $request ) ) {
if ( ! defined( 'DOING_AJAX' ) || ! DOING_AJAX ) {
trigger_error( __( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.' ) . ' ' . __( '(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)' ), headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE );
}
$request = wp_remote_post( $http_url, $http_args );
}
if ( is_wp_error($request) ) {
$res = new WP_Error('themes_api_failed', __( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.' ), $request->get_error_message() );
} else {
$res = maybe_unserialize( wp_remote_retrieve_body( $request ) );
if ( ! is_object( $res ) && ! is_array( $res ) )
$res = new WP_Error('themes_api_failed', __( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="https://wordpress.org/support/">support forums</a>.' ), wp_remote_retrieve_body( $request ) );
}
}
/**
* Filter the returned WordPress.org Themes API response.
*
* @since 2.8.0
*
* @param array|object $res WordPress.org Themes API response.
* @param string $action Requested action. Likely values are 'theme_information',
* 'feature_list', or 'query_themes'.
* @param object $args Arguments used to query for installer pages from the WordPress.org Themes API.
*/
return apply_filters( 'themes_api_result', $res, $action, $args );
}
/**
* Prepare themes for JavaScript.
*
* @since 3.8.0
*
* @param array $themes Optional. Array of WP_Theme objects to prepare.
* Defaults to all allowed themes.
*
* @return array An associative array of theme data, sorted by name.
*/
function wp_prepare_themes_for_js( $themes = null ) {
$current_theme = get_stylesheet();
/**
* Filter theme data before it is prepared for JavaScript.
*
* Passing a non-empty array will result in wp_prepare_themes_for_js() returning
* early with that value instead.
*
* @since 4.2.0
*
* @param array $prepared_themes An associative array of theme data. Default empty array.
* @param null|array $themes An array of WP_Theme objects to prepare, if any.
* @param string $current_theme The current theme slug.
*/
$prepared_themes = (array) apply_filters( 'pre_prepare_themes_for_js', array(), $themes, $current_theme );
if ( ! empty( $prepared_themes ) ) {
return $prepared_themes;
}
// Make sure the current theme is listed first.
$prepared_themes[ $current_theme ] = array();
if ( null === $themes ) {
$themes = wp_get_themes( array( 'allowed' => true ) );
if ( ! isset( $themes[ $current_theme ] ) ) {
$themes[ $current_theme ] = wp_get_theme();
}
}
$updates = array();
if ( current_user_can( 'update_themes' ) ) {
$updates_transient = get_site_transient( 'update_themes' );
if ( isset( $updates_transient->response ) ) {
$updates = $updates_transient->response;
}
}
WP_Theme::sort_by_name( $themes );
$parents = array();
foreach ( $themes as $theme ) {
$slug = $theme->get_stylesheet();
$encoded_slug = urlencode( $slug );
$parent = false;
if ( $theme->parent() ) {
$parent = $theme->parent()->display( 'Name' );
$parents[ $slug ] = $theme->parent()->get_stylesheet();
}
$customize_action = null;
if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
$customize_action = esc_url( add_query_arg(
array(
'return' => urlencode( esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) ),
),
wp_customize_url( $slug )
) );
}
$prepared_themes[ $slug ] = array(
'id' => $slug,
'name' => $theme->display( 'Name' ),
'screenshot' => array( $theme->get_screenshot() ), // @todo multiple
'description' => $theme->display( 'Description' ),
'author' => $theme->display( 'Author', false, true ),
'authorAndUri' => $theme->display( 'Author' ),
'version' => $theme->display( 'Version' ),
'tags' => $theme->display( 'Tags' ),
'parent' => $parent,
'active' => $slug === $current_theme,
'hasUpdate' => isset( $updates[ $slug ] ),
'update' => get_theme_update_available( $theme ),
'actions' => array(
'activate' => current_user_can( 'switch_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=activate&stylesheet=' . $encoded_slug ), 'switch-theme_' . $slug ) : null,
'customize' => $customize_action,
'delete' => current_user_can( 'delete_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=delete&stylesheet=' . $encoded_slug ), 'delete-theme_' . $slug ) : null,
),
);
}
// Remove 'delete' action if theme has an active child
if ( ! empty( $parents ) && array_key_exists( $current_theme, $parents ) ) {
unset( $prepared_themes[ $parents[ $current_theme ] ]['actions']['delete'] );
}
/**
* Filter the themes prepared for JavaScript, for themes.php.
*
* Could be useful for changing the order, which is by name by default.
*
* @since 3.8.0
*
* @param array $prepared_themes Array of themes.
*/
$prepared_themes = apply_filters( 'wp_prepare_themes_for_js', $prepared_themes );
$prepared_themes = array_values( $prepared_themes );
return array_filter( $prepared_themes );
}
/**
* Print JS templates for the theme-browsing UI in the Customizer.
*
* @since 4.2.0
*/
function customize_themes_print_templates() {
$preview_url = esc_url( add_query_arg( 'theme', '__THEME__' ) ); // Token because esc_url() strips curly braces.
$preview_url = str_replace( '__THEME__', '{{ data.id }}', $preview_url );
?>
<script type="text/html" id="tmpl-customize-themes-details-view">
<div class="theme-backdrop"></div>
<div class="theme-wrap wp-clearfix">
<div class="theme-header">
<button type="button" class="left dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Show previous theme' ); ?></span></button>
<button type="button" class="right dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Show next theme' ); ?></span></button>
<button type="button" class="close dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Close details dialog' ); ?></span></button>
</div>
<div class="theme-about wp-clearfix">
<div class="theme-screenshots">
<# if ( data.screenshot[0] ) { #>
<div class="screenshot"><img src="{{ data.screenshot[0] }}" alt="" /></div>
<# } else { #>
<div class="screenshot blank"></div>
<# } #>
</div>
<div class="theme-info">
<# if ( data.active ) { #>
<span class="current-label"><?php _e( 'Current Theme' ); ?></span>
<# } #>
<h2 class="theme-name">{{{ data.name }}}<span class="theme-version"><?php printf( __( 'Version: %s' ), '{{ data.version }}' ); ?></span></h2>
<h3 class="theme-author"><?php printf( __( 'By %s' ), '{{{ data.authorAndUri }}}' ); ?></h3>
<p class="theme-description">{{{ data.description }}}</p>
<# if ( data.parent ) { #>
<p class="parent-theme"><?php printf( __( 'This is a child theme of %s.' ), '<strong>{{{ data.parent }}}</strong>' ); ?></p>
<# } #>
<# if ( data.tags ) { #>
<p class="theme-tags"><span><?php _e( 'Tags:' ); ?></span> {{ data.tags }}</p>
<# } #>
</div>
</div>
<# if ( ! data.active ) { #>
<div class="theme-actions">
<div class="inactive-theme">
<a href="<?php echo $preview_url; ?>" target="_top" class="button button-primary"><?php _e( 'Live Preview' ); ?></a>
</div>
</div>
<# } #>
</div>
</script>
<?php
}