A couple of NSTable questions
A couple of NSTable questions
- Subject: A couple of NSTable questions
- From: Mike Brinkman <email@hidden>
- Date: Wed, 30 Jul 2003 10:17:25 -0400
I have just finished reading chapter 9 of "Learning Cocoa With Objective C
(2nd Ed.)". After I finish every chapter, I try to write a similar app, but
with more functionality, both to challenge myself and enforce what I've
already learned.
I'm making up a mini-program which simply lets you enter a to do item (an
NSString) and a due date (NSCalendarDate) into and NSTextFields, and then
loads the items into an NSTableView.
They're called:
NSString *toDo;
NSCalendarDate *dueDate;
The table is just called "table". Everything works fine, including sorting
the columns. I did run across one problem with the sorting though. I was
changing options for my NSTableView, and deselected "Allows Reordering"
because I don't want for the table columns to be switched around. The
problem is that this prevents the contents of the table from being sorted.
Is there a way to allow the rows to be reordered while still preventing the
columns from being rearranged?
The sorting method looks like this:
- (void)tableView:(NSTableView *)tableView
didClickTableColumn:(NSTableColumn *)tableColumn
{
NSString *identifier = [tableColumn identifier];
if ([identifier isEqualToString:@"toDo"]) {
[toDoList sortUsingSelector:@selector(compareToDo:)];
} else {
[toDoList sortUsingSelector:@selector(compareDueDate:)];
}
[table reloadData];
}
*********
Next objective I wanted to do was to make any appointments ending within 7
days to show up in red. I know that if I was just going to draw a string in
a view, all I would do is something like this:
NSMutableDictionary *attribs = [NSMutableDictionary dictionary];
[attribs setObject:[NSColor redColor]
forKey:NSForegroundColorAttributeName];
[myString drawAtPoint:NSMakePoint(x, y)
withAttributes:attribs];
I also know that if I wanted to check the interval between today's date and
the due date, I would simply write:
[dueDate years:NULL months:NULL days:&days hours:NULL minutes:NULL
seconds:NULL sinceDate:[NSCalendarDate calendarDate]]
Then I could compare the result in an if statement and set the color
attribute. I can't figure out how to do this when loading the data into the
NSTableView though. Where would I put the if statement?
Thanks for any help!
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