In the cq:dialog in AEM 6.3 you have a granite:data node which can have a couple of listeners. For example an onLoad and onChange listener. Those listeners call a function in guidelib.touchlib.editLayer.dialogUtils."a function".
Does somebody knows where those functions are located or where I can find guidelib.touchlib.editLayer.dialogUtils?
They are located in the clientlibs /libs/fd/af/authoring/clientlibs/touchAuthoring/guideTouchAuthoringDialog/guideTouchAuthoringDialogComponent/js/TouchDialogBehavior.js
Eventually the path was /etc/clientlibs/fd/af/guideTouchAuthoringDialog/guideTouchAuthoringDialogComponent/js/TouchDialogBehavior.js. But ok I was able to find the right file.