Your video is showing a fairly standard Visual Programming framework and editor and more specifically that editor is what would be called a WYSIWYG Design Editor.
Generally when they are in this form the correct terminology for them is Graphical user interface builders. Wiki carries a list of them for just about everything you could imagine
List of graphical user interface builders and rapid application development tools - Wikipedia, the free encyclopedia
Most of us have seen these come and go and none of them have made any real impact because they generally have rather large drawbacks which ultimately limit them to very specific program situations and generally layman or naive programmers are the target audience.
The editor shown in your video looks very similar in operation to the old Delphi (Visual Pascal) editor in operation. Embarcadero is the current owner of Delphi and has just released version 10 which does many of the same sorts of things you just showed, they have a video which looks sort of similar to the one you showed.
So as it seems to be the WYSIWYG design element that seems to excite you then perhaps work your way thru the wiki list looking at options that may interest you. You will have to discuss the ones that interest you on an appropriate forum as most programmers develop "run away" instincts when we see these things.