base_theme)) {
$theme_paths[$theme] = conditional_styles_paths_to_basetheme($themes[$theme]->base_theme);
}
$theme_paths[$theme][$theme] = dirname($themes[$theme]->filename);
}
return $theme_paths[$theme];
}
/**
* When the theme registry is rebuilt, we also build the conditional stylesheets.
*/
function _conditional_styles_theme($existing, $type, $theme, $path) {
// @TODO: For PHP 4 compatibility we use foreach (array_keys($array) AS $key).
// When PHP 5 becomes required (Drupal 7.x), use the following faster
// implementation: foreach ($array AS $key => &$value) {}
// Process the conditional stylesheets for every active theme.
global $language;
$themes = list_themes();
foreach (array_keys($themes) AS $theme) {
// We only need to process active themes.
if ($themes[$theme]->status || $GLOBALS['theme'] == $theme) {
$paths = conditional_styles_paths_to_basetheme($theme);
// Grab all the conditional stylesheets.
$stylesheets = array();
// Start with the base theme and travel up the chain to the active theme.
foreach ($paths AS $theme_name => $path) {
// Look at the conditional-stylesheets defined in the theme's .info file.
if (!empty($themes[$theme_name]->info['conditional-stylesheets'])) {
foreach ($themes[$theme_name]->info['conditional-stylesheets'] AS $condition => $css) {
// Allow the theme to override its base themes' styles.
foreach ($css AS $media => $files) {
foreach ($files AS $file) {
$stylesheets[$condition][$media][$file] = $path;
}
}
}
}
}
// Render the stylesheets to link elements.
$conditional_styles = '';
if (!empty($stylesheets)) {
$query_string = '?'. substr(variable_get('css_js_query_string', '0'), 0, 1);
$base_path = base_path();
foreach ($stylesheets AS $condition => $css) {
// Each condition requires its own set of links.
$output = '';
foreach ($css AS $media => $files) {
foreach ($files AS $file => $path) {
// Don't allow non-existent stylesheets to clutter the logs with 404.
if (file_exists("./$path/$file")) {
$output .= "\n";
if ($language->direction == LANGUAGE_RTL){
$file_rtl = str_replace('.css', '-rtl.css', $file);
if (file_exists("./$path/$file_rtl")) {
$output .= "\n";
}
}
}
}
}
if ($output) {
$conditional_styles .= "\n";
}
}
}
// Save the stylesheets for later retrieval.
if ($conditional_styles) {
variable_set('conditional_styles_' . $theme, $conditional_styles);
}
else {
variable_del('conditional_styles_' . $theme);
}
}
}
// Return nothing.
return array();
}