Angular (19): Keydown event in a node extension

[SABKraken]

Hi there,

in Angular i've created a new node extension to display a (css) box with header and content text.
But if the user will edit the header or content text and press the Delete key, the whole box disappears and not only the sign under the cursor. So my idea was to add a key down listener to the node and if the delete key was pressed i call the stopPropagation() function.
Q: How can i add a listener to the node? Or does anyone have a better idea?

Thanks in advance and best greetings. :-)