Ui control does not emit an event upon showing or closing of a dialog

[Steve-Mcl]

Current Behavior

Currently there is no way to know if a dialogue opened or closed.

This is useful for populating Fields upon opening and other things like cleanup after closing.

Expected Behavior

At minimum, an event that a dialogue has opened or closed.

Even better still would be to be able to include parameters in the message sent to UI control so that the emitted control event contained these additional parameters. This would permit a dialog to be closed and pass values to the control for later use

Steps To Reproduce

Create a dialog group Add a UI control linked to a debug node Open the via ui control - note that there are no debug events

Environment

• Dashboard version: 1.25
• Node-RED version:
• Node.js version:
• npm version:
• Platform/OS:
• Browser:

Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate