On Dec 21, 2009, at 22:02, Gerriet M. Denkmann wrote:
I am trying to bind editable of an NSTableColumn to ObjectController
tabView.selectedIndex
(The tab view has two items: Read and Edit. When the first item is selected,
my table column should not be editable).
But I am told:
[NSTabView 0x10027d010 valueForUndefinedKey:]: this class is not key value
coding-compliant for the key selectedIndex.
On the other hand, the Cocoa Bindings Reference for NSTabView says:
selectedIndex
An integer value that specifies the index of the selected item in the
NSTabView. When the selection changes in the NSTabView, this value is updated
with the index of the newly selected item.
So: what is going on?
And: how do I make my table column editable if and only if the first tab view
item is selected?
selectedIndex is a binding, not a property. There is no NSTabView property
that makes the selected tab index available directly.
The simplest way to do this is probably to create an isFirstTabSelected
property in your window controller (tracking changes to the tab view state),
and bind the table column's editable binding to that property.
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