April 2015
Intermediate to advanced
556 pages
17h 47m
English
book
Cocoa Programming for OS X: The Big Nerd Ranch Guide
by Aaron Hillegass, Adam Preble, Nate Chandler
Content preview from Cocoa Programming for OS X: The Big Nerd Ranch Guide
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Configuring RaiseMan’s Remove Button
Now that your array controller knows what the user has selected in the table view, you can use the array controller to ensure that the Remove button is only enabled when appropriate – when the array controller has an object selected. This will prevent your users from clicking Remove when they have not selected an employee to remove.
You will bind the button’s enabled property
to the array controller’s canRemove property.
This property is true only
when the array controller can actually do removal.
In other words, this property will be false
when the array controller does not have any objects selected.
To set up this binding, select the Remove button and switch to the bindings inspector. In the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.