Return a list of all currently available themes.
Retrieved from the database, if available and the site is not in maintenance mode; otherwise compiled freshly from the filesystem.
$refresh: Whether to reload the list of themes from the database. Defaults to FALSE.
An associative array of the currently available themes. The keys are the themes' machine names and the values are objects having the following properties:
function list_themes($refresh = FALSE) {
$list =& drupal_static(__FUNCTION__, array());
if ($refresh) {
$list = array();
system_list_reset();
}
if (empty($list)) {
$list = array();
$themes = array();
// Extract from the database only when it is available.
// Also check that the site is not in the middle of an install or update.
if (!defined('MAINTENANCE_MODE')) {
try {
$themes = system_list('theme');
} catch (Exception $e) {
// If the database is not available, rebuild the theme data.
$themes = _system_rebuild_theme_data();
}
}
else {
// Scan the installation when the database should not be read.
$themes = _system_rebuild_theme_data();
}
foreach ($themes as $theme) {
foreach ($theme->info['stylesheets'] as $media => $stylesheets) {
foreach ($stylesheets as $stylesheet => $path) {
$theme->stylesheets[$media][$stylesheet] = $path;
}
}
foreach ($theme->info['scripts'] as $script => $path) {
$theme->scripts[$script] = $path;
}
if (isset($theme->info['engine'])) {
$theme->engine = $theme->info['engine'];
}
if (isset($theme->info['base theme'])) {
$theme->base_theme = $theme->info['base theme'];
}
// Status is normally retrieved from the database. Add zero values when
// read from the installation directory to prevent notices.
if (!isset($theme->status)) {
$theme->status = 0;
}
$list[$theme->name] = $theme;
}
}
return $list;
}