Topic: How to insert buttons inside the content_iframe

I have to change tinyMCE in a way that I can set certain headlines, and even buttons inside that cant be changed or deleted. But the buttons (mostly used to change that static document structure must work)..

I've managed to make only certain areas editable but failed to create buttons (bootstrap kind of buttons) that work. Its like tinyMCE is at some point removing events or changing my nodes so that nothing works anymore.

I've been trying to understand what is happening but failed so far. is there any kind of plugin that faced the same problems (buttons that work inside the actual content).

Any other hints what might crash my eventlisteners are welcome, thank you :-)