Re: Editing multiple selections with bindings
Re: Editing multiple selections with bindings
- Subject: Re: Editing multiple selections with bindings
- From: Patrick Cusack <email@hidden>
- Date: Wed, 02 Jan 2013 08:59:33 -0800
Sorry, I might not be clear. I have a table view that is bound to an NSArraryController. I want users to be able to edit single and multiple selections from a detail view that has NSTextfields and ComboBoxes. There are occasions where users forget that they have selected multiple items and proceed to edit cues, unaware that they are actually mutating more than one row of data. When an editor tabs into a control like the NSTextField or NSComboBox, I want to give them a chance to discard editing. I can easily deduce that multiple items in my NSArrayController are selected, throw an NSRunAlert, and give users an option to make a choice, but at that point, I have already entered focus into the control and any attempt to leave that control will still change the selected items. I tried overriding acceptsFirstResponder, and conducting my test in that selector, but acceptsFirstResponder gets called more than once, and then the control passes focus onto the next control in the kew view loop. Really what I want to a accomplish is to discard the editing and resign focus from the control.
Thanks,
Patrick
On Jan 2, 2013, at 6:41 AM, Keary Suska wrote:
> On Jan 2, 2013, at 12:05 AM, email@hidden wrote:
>
>> I have an application where a user can select multiple rows of data from an NSArrayController and edit those rows from a detail view. Now, there are cases where users have inadvertently changed the values for multiple rows of data when they did not intend to. How can I warn a user when they enter a texfield or nscombobox that they are about to edit multiple rows of data and gracefully give them a way to back out? I noticed that there is no way to discard editing when in a textfield. Is that the case? I am using the control: textShouldEndEditing: delegate method which allow me to get 90% of the way there, but the textfield retains focus, and I can not tab out of the field without getting my warning. Ideally, pressing "esc" should allow me to discard any editing and make the field lose focus.
>
> IIRC you can set a delegate to the table view and implement tableView:shouldEditTableColumn:row:, and you should be able to prevent editing from even starting until the user has confirmed.
>
> HTH,
>
> Keary Suska
> Esoteritech, Inc.
> "Demystifying technology for your home or business"
>
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