On BackgroundDoubleClicked, see if shift key press

GoJS
1

Howdy – slapping my forehead on this one as I think it should be easy to figure out from the docs, but I am missing something.

I’m implementing the following behaviors :

1) if the background is double clicked (deteced w/a diagramListener on “BackgroundDoubleClicked”), zoom in (ala google maps).

Easy enough.

But, here’s where my problem is… I also want to do :

2) if the background is double clicked AND the SHIFT key is being depressed, call a zoom out. I thought I would have access to an e.key property on the diagramEvent object, but it turns out that is only available on a more specific kind of diagram event (InputEvent : InputEvent | GoJS API).

Is there a better way to setup my listeners so that the key pressed during the BackgroundDoubleClicked event can be detected? Obviously, I could just drum up some jquery in parallel, but I’d rather keep the biz logic here all GoJS.

any help appreciated – thanks!

Greg

2

Yes, DiagramEvents are more abstract than InputEvents – some DiagramEvents do not even correspond to any InputEvent.

But in this case you could look at the e.diagram.lastInput.shift to see if the Shift key is being held down.

3

Aha! Awesome – thanks @walter, exactly what I was looking for…

Smile