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Re: binding relationship to checkbox
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Re: binding relationship to checkbox


  • Subject: Re: binding relationship to checkbox
  • From: Amy Gibbs <email@hidden>
  • Date: Mon, 07 Mar 2011 08:58:43 +0000

Hi,

My application has a tab view as the main view (it might look dated but I can take it straight from the library and it works)

In one tab I have a table view that holds the 'master' category list. Here I can add/remove categories.

In another tab I have my products list. There is a tableview that lists the products, and then various other items displaying other related data, an image etc. In this tab I have got another tableview that currently has a column for the category name and a checkbox column. I want to list all the categories that exist in this tableview, and select and deselect the checkboxes to create/break the relationship(s) between the selected product and the categories.

Am I along the right lines?

Thanks

Amy

On 6 Mar 2011, at 7:49PM, Jerry Krinock wrote:


On 2011 Mar 05, at 08:20, Amy Heavey wrote:

This sounds to me like something that should be doable with the 'magic' of bindings

Well, bindings should certainly be involved, but there is more to it than that. The most important is the view that will display your "checkbox column". Assuming that the user can add and delete 'categories', this view will need to grow or shrink and/or scroll with the number of objects it contains, and it would be nice to avoid writing that code. I would study these options:


(a) an NSTableView in source list style.
(b) an NSCollectionView
(c) Last resort, a custom view that you code yourself, containing an array of checkboxes


Then, the 'categories' in your data model should interface to this view via an array controller, and that's where you'll use bindings.

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