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Re: NSUndoManager beginUndoGrouping and endUndoGrouping
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Re: NSUndoManager beginUndoGrouping and endUndoGrouping


  • Subject: Re: NSUndoManager beginUndoGrouping and endUndoGrouping
  • From: Ken Anderson <email@hidden>
  • Date: Mon, 15 Jan 2007 19:47:00 -0500

When the saveChanges() doesn't fail, you are not ending the undo group. You should have ec.undoManager().endUndoGrouping() after ec.saveChanges().

Ken

On Jan 15, 2007, at 5:36 PM, Marcos Trejo Munguia wrote:

Dear List,

I have never used NSUndoManager at all, I read through the API documentation and maybe I didn't get the idea, I believed that beginUndoGrouping and endUndoGrouping were used to mark the beginning and the end of an undo group. I'm using beginUndoGrouping and endUndoGrouping as follows:

private EOEditingContext ec = new EOEditingContext();

public void select() {
	...
	ec.undoManager().beginUndoGrouping();
	....
}

public void save() {
	try {
		ec.saveChanges();
	} catch (Exception e) {
		ec.undoManager().endUndoGrouping();
		ec.undoManager().undoNestedGroup();
	}
}

What I see is almost everything in the editing context being undone.

Can somebody please tell me what am I doing wrong?

Thanks in advance!

Cheers

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