Save As - Save a file as a different name

[phated]

Split out from #108

[spatializes]

@PropGit when Save As is triggered, what would you like to show in the filename box? Currently it will show the active file name (see image below for file "a test"). Does that work? Or would you like it to show "activeFilename copy"? Or "activeFilename1"? Or continue on with the "untitled#" scheme? Something else?

[jeffam70]

@DrQuinn Thanks for asking. Since the common workflow is for someone to want to save as to a similar (but different) name, I'd like to to show the active name (as you now have it) with the field focused and with the cursor to the right of the name.

Also, this reminds me of a needed feature... When the user clicks the Save As button from this overlay, the Save As feature should always prompt with a confirmation if the user uses a filename that already exists (ie: "File '' already exists. Overwrite anyway?" with Overwrite and Cancel button options).

I can make that a separate linked issue if you want.

[spatializes]

@jeffam70 ok great, I'll set that up for filename.

I think another issue would be good for the overwrite prompt and dialog that would go along with it.

[PropGit]

Tested, but the cursor doesn't end up to the right of the filename. Will make another issue for this.