Loading a SPModal window in SP passing the parent window location

Loading a SPModal.js

function getWindowLocation() {
  var caller = '';
  
  ['protocol','//','hostname','pathname'].forEach(function(item, i) {
      caller += item === '//' ? item : window.location[item];
  });  
  
  return caller;
}

function loadTemplatePicker() {
      var _options = {
          tite : 'Template Picker',
          url : <INSERT URL HERE>,
          allowMaximize : false,
          showClose : true,
          autoSize : true,
          width: 560,
          height : 560,
          args: {  parentLocationUrl: getWindowLocation() },
          dialogReturnValueCallback : close
      };
 
      SP.SOD.execute('sp.ui.dialog.js', 'SP.UI.ModalDialog.showModalDialog', _options); 	
}


//Meanwhile we will need to get the property on the target page being loaded in the modal window...
var args = SP.UI.ModalDialog.get_childDialog().get_args();
console.log(args.parentLocationUrl);