I have a table which has a list of items on which multiple actions can be
performed. Initially, I thought to use check box cells (there are only two
possible actions that can be performed on each item right now - so the list of
columns is manageable) I thought a little further about the problem and it
became apparent to me that, whilst there are only two possible actions right
now, there might be twenty in the future - and, given the limited amount of
space available to the table, twenty columns might become unmanageable.
My idea, and whether it's good or not remains to be seen, is to use an
NSPopUpButtonCell in the NSTableView instead. When an action is selected from
the NSPopUpButtonCell the check mark against its name would be toggled
(multiple selections would be permitted, so multiple items in the menu might
have a check mark next to their names). In this manner, the table would only
have two columns (item and menu) and the whole thing would be far more
manageable.
SO:
Question 1. Is this possible, and am I even using the correct tool to do the
job?
Question 2. Are there any examples of how to achieve what I am trying to do?
At the moment, my code looks like this (nothing is happening yet - I'm just
trying to see if I can get the toggle to work - and I can't):
- (IBAction)cellPreferenceChanged:(id)sender
{
[[sender selectedItem] setState:NSOnState];
}
cellPreferenceChanged is bound to the NSPopUpButtonCell in IB. Oddly, despite
this binding, this code results in [NSTableView selectedItem]: unrecognized
selector sent to instance. Why is this? Surely, since it is the
NSPopUpButtonCell that is bound it should be the NSPopUpButtonCell instance for
the selected row that is sent?
I am utterly perplexed, and clearly grasping the wrong end of the stick. Any
help would be most gratefully received.
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