acp_styles::action_install PHP Method

    protected function action_install()
    {
        // Get list of styles to install
        $dirs = $this->request_vars('dir', '', true);
        // Get list of styles that can be installed
        $styles = $this->find_available(false);
        // Install each style
        $messages = array();
        $installed_names = array();
        $installed_dirs = array();
        $last_installed = false;
        foreach ($dirs as $dir) {
            if (in_array($dir, $this->reserved_style_names)) {
                $messages[] = $this->user->lang('STYLE_NAME_RESERVED', htmlspecialchars($dir));
                continue;
            }
            $found = false;
            foreach ($styles as &$style) {
                // Check if:
                // 1. Directory matches directory we are looking for
                // 2. Style is not installed yet
                // 3. Style with same name or directory hasn't been installed already within this function
                if ($style['style_path'] == $dir && empty($style['_installed']) && !in_array($style['style_path'], $installed_dirs) && !in_array($style['style_name'], $installed_names)) {
                    // Install style
                    $style['style_active'] = 1;
                    $style['style_id'] = $this->install_style($style);
                    $style['_installed'] = true;
                    $found = true;
                    $last_installed = $style['style_id'];
                    $installed_names[] = $style['style_name'];
                    $installed_dirs[] = $style['style_path'];
                    $messages[] = sprintf($this->user->lang['STYLE_INSTALLED'], htmlspecialchars($style['style_name']));
                }
            }
            if (!$found) {
                $messages[] = sprintf($this->user->lang['STYLE_NOT_INSTALLED'], htmlspecialchars($dir));
            }
        }
        // Invalidate the text formatter's cache for the new styles to take effect
        if (!empty($installed_names)) {
            $this->text_formatter_cache->invalidate();
        }
        // Show message
        if (!count($messages)) {
            trigger_error($this->user->lang['NO_MATCHING_STYLES_FOUND'] . adm_back_link($this->u_action), E_USER_WARNING);
        }
        $message = implode('<br />', $messages);
        $message .= '<br /><br /><a href="' . $this->u_base_action . '&amp;mode=style' . '">&laquo; ' . $this->user->lang('STYLE_INSTALLED_RETURN_INSTALLED_STYLES') . '</a>';
        $message .= '<br /><br /><a href="' . $this->u_base_action . '&amp;mode=install' . '">&raquo; ' . $this->user->lang('STYLE_INSTALLED_RETURN_UNINSTALLED_STYLES') . '</a>';
        trigger_error($message, E_USER_NOTICE);
    }