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WordPress/wp-admin/includes/theme.php

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PHP
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<?php
/**
* WordPress Theme Administration API
*
* @package WordPress
* @subpackage Administration
*/
/**
* Remove a theme
*
* @since 2.8.0
*
* @param string $stylesheet Stylesheet of the theme to delete
* @param string $redirect Redirect to page when complete.
* @return mixed
*/
function delete_theme($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)) ) {
$data = ob_get_contents();
ob_end_clean();
if ( ! empty($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
$data = ob_get_contents();
ob_end_clean();
if ( ! empty($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 object $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
*
* @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 $themes_update;
if ( !current_user_can('update_themes' ) )
return false;
if ( !isset($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&amp;theme=' . urlencode( $stylesheet ) ), 'upgrade-theme_' . $stylesheet );
$update_onclick = 'onclick="if ( confirm(\'' . esc_js( __("Updating this theme will lose any customizations you have made. 'Cancel' to stop, 'OK' to update.") ) . '\') ) {return true;}return false;"';
if ( !is_multisite() ) {
if ( ! current_user_can('update_themes') ) {
$html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a>.' ) . '</strong></p>',
$theme_name, esc_url( $details_url ), esc_attr( $theme['Name'] ), $update['new_version'] );
} elseif ( empty( $update['package'] ) ) {
$html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a>. <em>Automatic update is unavailable for this theme.</em>' ) . '</strong></p>',
$theme_name, esc_url( $details_url ), esc_attr( $theme['Name'] ), $update['new_version'] );
} else {
$html = sprintf( '<p><strong>' . __( 'There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a> or <a href="%5$s">update now</a>.' ) . '</strong></p>',
$theme_name, esc_url( $details_url ), esc_attr( $theme['Name'] ), $update['new_version'], $update_url, $update_onclick );
}
}
}
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 WP.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;
}
/**
* Retrieve theme installer pages from WordPress 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, 'themes_api_args', is for the args and gives the action as
* the second parameter. The hook for 'themes_api_args' must ensure that an
* object is returned.
*
* The second filter, 'themes_api', is the result that would be returned.
*
* @since 2.8.0
*
* @param string $action The requested action. Likely values are 'theme_information',
* 'feature_list', or 'query_themes'.
* @param array|object $args Optional. Arguments to serialize for the Theme Info API.
* @return mixed
*/
function themes_api( $action, $args = null ) {
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.
*
* Returning a value of true to this filter allows a theme to completely
* override the built-in WordPress.org API.
*
* @since 2.8.0
*
* @param bool $bool 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&#8217;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&#8217;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&#8217;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();
// Make sure the current theme is listed first.
$prepared_themes = array( $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();
}
$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&amp;stylesheet=' . $encoded_slug ), 'switch-theme_' . $slug ) : null,
'customize' => ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) ? wp_customize_url( $slug ) : null,
'preview' => add_query_arg( array(
'preview' => 1,
'template' => urlencode( $theme->get_template() ),
'stylesheet' => urlencode( $slug ),
'preview_iframe' => true,
'TB_iframe' => true,
), home_url( '/' ) ),
'delete' => current_user_can( 'delete_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=delete&amp;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 );
return array_values( $prepared_themes );
}
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