/**
* Common pre-header loader function for all WPI pages added in admin_menu()
*
* All back-end pages call this function, which then determines that UI to load below the headers.
*
* @since 3.0
*/
static function common_pre_header()
{
global $current_screen;
$browser = WPI_Functions::browser();
$screen_id = $current_screen->id;
if (!$screen_id) {
return;
}
//* Load Global Script and CSS Files */
if (file_exists(WPI_Path . '/core/css/jquery-ui-1.8.21.custom.css')) {
wp_register_style('wpi-custom-jquery-ui', WPI_URL . '/core/css/jquery-ui-1.8.21.custom.css');
}
if (file_exists(WPI_Path . '/core/css/wpi-admin.css')) {
wp_register_style('wpi-admin-css', WPI_URL . '/core/css/wpi-admin.css', array(), WP_INVOICE_VERSION_NUM);
}
//* Load Page Conditional Script and CSS Files if they exist*/
if (file_exists(WPI_Path . "/core/css/{$screen_id}.css")) {
wp_register_style('wpi-this-page-css', WPI_URL . "/core/css/{$screen_id}.css", array('wpi-admin-css'), WP_INVOICE_VERSION_NUM);
}
//* Load IE 7 fix styles */
if (file_exists(WPI_Path . "/core/css/ie7.css") && $browser['name'] == 'ie' && $browser['version'] == 7) {
wp_register_style('wpi-ie7', WPI_URL . "/core/css/ie7.css", array('wpi-admin-css'), WP_INVOICE_VERSION_NUM);
}
//* Load Page Conditional Script and CSS Files if they exist*/
if (file_exists(WPI_Path . "/core/js/{$screen_id}.js")) {
wp_register_script('wpi-this-page-js', WPI_URL . "/core/js/{$screen_id}.js", array('wp-invoice-events'), WP_INVOICE_VERSION_NUM);
}
//* Load Conditional Metabox Files */
if (file_exists(WPI_Path . "/core/ui/metabox/{$screen_id}.php")) {
include_once WPI_Path . "/core/ui/metabox/{$screen_id}.php";
}
}