Re: NSUndoManager and runModalForWindow: (again)
Re: NSUndoManager and runModalForWindow: (again)
- Subject: Re: NSUndoManager and runModalForWindow: (again)
- From: Kyle Sluder <email@hidden>
- Date: Mon, 16 Nov 2009 13:21:47 -0800
On Mon, Nov 16, 2009 at 1:08 PM, Kevin <email@hidden> wrote:
>> Maybe try abandoning -groupsByEvent?
>
> I did and it worked. Calling [[self.temporaryMOC undoManager]
> setGroupsByEvent:NO] did the trick.
>
> Although I'm ecstatic that it worked, I'm not sure why it did. Many thanks
> for suggesting that.
Well it really shouldn't have, unless I'm completely mistaken. Here's
what should have happened in my mind:
- Top of run loop
- Incoming click on "show modal window" button (or other UI event
causing this code to execute)
- Main document undo manager opens undo group
- UI event dispatched
- Temporary MOC created
- Temporary undo manager created
- Modal runloop mode assigned to temporary undo manager
- Temporary undo manager assigned to temporary MOC
- Start modal runloop
- Temporary undo manager opens undo group
- End modal runloop iteration
- Incoming user-mucks-with-field event
- Begin modal runloop iteration
- Temporary undo manager opens undo group
- Text field records undo event for user-mucking
- End modal runloop iteration
- Begin modal runloop iteration
...
So this should have worked out of the box.
--Kyle Sluder
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