Re: NSArrayController + NSTableView addObject ends editing
Re: NSArrayController + NSTableView addObject ends editing
- Subject: Re: NSArrayController + NSTableView addObject ends editing
- From: Trygve Inda <email@hidden>
- Date: Tue, 24 Dec 2013 11:07:08 -0800
- Thread-topic: NSArrayController + NSTableView addObject ends editing
> On Nov 14, 2013, at 8:04 AM, Trygve Inda <email@hidden> wrote:
>
>>> On Nov 14, 2013, at 12:54 AM, Trygve Inda <email@hidden> wrote:
>>>
>>>> I have a NSTableView backed by an NSArrayController.
>>>>
>>>> If I am editing a cell in a row in the tableview and call addObject on the
>>>> NSArrayController (to add a new row to the tableview), my editing session
>>>> for some other row is ended.
>>>>
>>>> addObject is called from an NSNotification method when some other event
>>>> happens in the app the requires a row be added to the table.
>>>>
>>>> How can I prevent the edit session from ending.?
>>>
>>> In the docs, - (BOOL)selectionShouldChangeInTableView:(NSTableView
>>> *)aTableView is used for this purpose…
>>>
>>> HTH,
>>>
>>> Keary Suska
>>> Esoteritech, Inc.
>>>
>>>
>>>
>>
>> Note that when the new row is added, the selection does not change, but the
>> editing of the cell is forced to end. The selection changes from a blue
>> highlight to a grey one.
>
>
> This is not because you are adding a row per se, but because the action is
> changing the first responder. If you don't want to allow changing the first
> responder you will need to subclass (the table view, cell, or window) to
> refuse to resign first responder status under the desired conditions.
>
In my table delegate I implement:
- (BOOL)control:(NSControl *)control textShouldEndEditing:(NSText
*)fieldEditor
{
if ([[fieldEditor string] length] == 0)
return NO; // don't allow empty names
else
return YES;
}
This works when editing a cell in a table row when I press return
If I change this to:
- (BOOL)control:(NSControl *)control textShouldEndEditing:(NSText
*)fieldEditor
{
return NO;
}
And start an edit session, if addObject is called on the ArrayCOntroller
feeding the tableView, the cell edit session ends without this method ever
being called.
However: - (void)controlTextDidEndEditing:(NSNotification *)obj
IS called.
How can I prevent the edit session from ending when adding items to the
array controller feeding the table view?
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