Re: Master-detail interface, multiple selection, and mixed state checkbox state transitions
Re: Master-detail interface, multiple selection, and mixed state checkbox state transitions
- Subject: Re: Master-detail interface, multiple selection, and mixed state checkbox state transitions
- From: "I. Savant" <email@hidden>
- Date: Wed, 15 Apr 2009 14:58:26 -0400
On Wed, Apr 15, 2009 at 2:36 PM, Sean McBride <email@hidden> wrote:
> 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.
Sounds reasonable.
> 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:
Google "NSButton bindings" to get the bindings reference. The
"value" key says:
"If the value binding represents a multiple value selection, and both
YES and NO values are represented in the bound key, the button is
temporarily set to allow mixed states if it doesn't already. If the
button is already configured to allow mixed states, the setting is
unchanged."
So ... I gather from this that if you have the button (in IB) set to
*not* allow mixed state, the behavior you want should be what you get.
Is this not the case?
--
I.S.
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