On Mar 28, 2008, at 10:08 PM, Ben Trumbull wrote:
Binding to .selection.a is going to call -valueForKeyPath:@"a" on
the array that's selected, which is 10,000 objects. Since the text
field can only show one of those values, this is kinda pointless.
This is the source of the recursion. Selection is based on the
entire array, which doesn't play well with KVO notifications during
faulting.
If you go into the Text Field's binding (cmd-4) and disable "Allows
Editing Multiple Values Selection" then the detail fields go blank
with multiple selections, but work as expected with a single
selection.
There's also the controller attribute "Always Use Multi Value Marker"
which will keep the controller from even looking at the property
values of the selected objects as long as more than one object is
selected in the controller.
Of course, this won't help if your textfield is editable and bound to
the controller's selection.foo keypath and the user tries to edit the
value.
And cmd-a is instantaneous, even without any of the other
workarounds we've discussed.
I'll file a bug if the issue is determined to be not on my part.
Please file a bug and attach your sample.
- Ben
-----------------------------
Ronzilla
Core Bindings/Cocoa Builder/Interface Data
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