Cocoa Binding-PullDown Button Issue
Cocoa Binding-PullDown Button Issue
- Subject: Cocoa Binding-PullDown Button Issue
- From: James Hillhouse <email@hidden>
- Date: Sun, 31 Oct 2004 01:34:51 -0500
Hi folks,
Playing with Cocoa Bindings but having a bit of a problem. So, I've got
a PullDown Button with two choices. I also have a Radio Button with two
choices. The problem is that in the case of each, all elements are
selected; that is, both elements in the PullDown Button and the Radio
Button are selected. I will concentrate my question on dealing with the
PullDown Button since I suspect its issues are similar to those of the
Radio Button.
How I am Binding Them:
When I bind the PullDown Button, I select Value, binding to the
controller (in this case OrbitController) with a "selection" Controller
Key and "selectCentralBodyMuAsPlanetX" for the first choice and
"selectCentralBodyMuAsPlanetY" for the second choice for the Model Key
Path. While "Allows Editing Multiple View Selection", "Raises for Non
Applicable Keys", and "Validates Immediately" are unchecked,
"Conditionally Sets Enabled" is enabled.
The Problem:
When the program runs, a new entry is created. The user is then asked
to select the planet around which to orbit. When the PullDown Button is
clicked on, both selections, "Planet X" and "Planet Y" are checked. The
mu (gravitation parameter) that the program ends up using is the last
choice. I've tried to override this by having a TextField to force a
certain value for mu in, all to no avail.
So, any suggestions on what I'm doing wrong.
Note: Scott, your Bindings session and FOB were excellent. My
difficulties have nothing to do with their thoroughness. Hope you're
doing well.
Jim Hillhouse
email@hidden
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