Master-detail interface, multiple selection, and mixed state checkbox state transitions
Master-detail interface, multiple selection, and mixed state checkbox state transitions
- Subject: Master-detail interface, multiple selection, and mixed state checkbox state transitions
- From: "Sean McBride" <email@hidden>
- Date: Wed, 15 Apr 2009 14:36:30 -0400
- Organization: Rogue Research Inc.
Hi all,
I have a master-detail interface. NSTableView is the master; a checkbox
is the detail. The checkbox corresponds to a boolean property of my
model object, and is so bound. In the case of multiple selection in the
tableview, I'd like the checkbox to show 'mixed state' as appropriate.
It's mostly working.
The problem is that clicking the checkbox, as per documentation, "cycles
through [the 3 states] in this order: on, off, mixed, on, and so
forth." But I don't want the user to be able to choose 'mixed state'.
I want this transition:
checked->unchecked
unchecked->checked
mixed->checked
What's the cleanest way to do this?
Thanks,
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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