Binded NSTextField doesn't update the entity until it lose the focus

Question

I have a Core Data project.

Basically I have an NSTableView where I add some entities (using the "add:" selector), double clicking on the TableView opens a new NSWindow where is possible to edit the entity using some NSTextFields. Each text field is binded to an attribute of the entity.

Everything is working fine, except the fact that the entity's attributes are updated only when a textfield lose the focus.

If I write on the first text field and then I move to the second one my entry is saved, but if I write on the first text field and I close the window I lose my changes.

How can I update my core data entity as soon as I write something in the text field? Should I use textDidChange:?

--- UPDATE ---

Unfortunately [context save] doesn't work. If I understand correctly the entity is not modified until the NSTextField resign first responder.

The only working solution for now is something like:

(void)controlTextDidChange:(NSNotification *)aNotification 
{
  NSTextField *tf = [aNotification object];
  [self.window makeFirstResponder:tf];
}

but this is quite inelegant, and in any case I also still need to re-set the cursor at the end of the NSTextField.

score 1 · Answer 1 · answered Mar 17 '13 at 19:59

1

Setting NSContinuouslyUpdatesValueBindingOption will cause the model to update every time the text field changes, which sets the dirty flag properly and causes the document to save on quit.

answered Mar 17 '13 at 19:59

alltom

3,162
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score 0 · Answer 2 · answered Sep 13 '18 at 08:03

If you don't have one already, you can set a delegate on the window and use -windowWillClose: or observe the NSWindowWillCloseNotification. You can then call [[notification object] makeFirstResponder:[window initialFirstResponder]] to set the window's first responder to its initial first responder as the window is closing. This will cause the control that is first responder (e.g. NSTextField) to resign the first responder status and the binding will save the changes.

score 0 · Answer 3 · answered Mar 06 '12 at 09:35

0

I think you could use DidEndEditing or TextDidChange, another way of doing this is handeling in the window close event, but I would not recommend it.

answered Mar 06 '12 at 09:35

tetuje

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Thank you for your quick reply. But I'm still wondering what need I to write inside DidEndEditing ? How can I update my entity (or my NSObjectController)? – Guido Lo Spacy Mar 06 '12 at 09:48
Im not quitte familiar with core data but what I understand if that you need to save the context after modifying your entity ( [context save] ) – tetuje Mar 06 '12 at 10:30

Binded NSTextField doesn't update the entity until it lose the focus

3 Answers3

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