I have a global container, into which the user needs to insert a file. So I want them just to be able to right-click on the field, and select 'Insert file'. But the contextual right-click menu is greyed out (Win and Mac). I assumed this was because I had disabled all toolbars, status bar, etc., but having re-enabled these, the menu is still unavailable.
Any suggestions as to what I might have done to make this happen?