Variable height NSTextField with PXListView - objective-c

Question

I am trying to use PXListView to show a table of cells containing NSTextFields and I want to vary the height of each cell to fix the text within it.
On my subclassed cell view I have a height method that calculates the height the cell should be:
- (CGFloat)height{
NSRect textRect = [self.text.attributedStringValue
boundingRectWithSize:NSMakeSize(NSWidth(self.text.frame), 0.0f)
options:NSStringDrawingUsesLineFragmentOrigin];
return MAX(90.0f, NSHeight(textRect)+73.0f);
}
Then on my PXListViewDelegate's heightOfRow method I get the cell for the row then get the height of that cell:
- (CGFloat)listView:(PXListView *)listView heightOfRow:(NSUInteger)row{
CustomViewCell *cell = (CustomViewCell *)[listView cellForRowAtIndex:row];
return [cell height];
}
The problem is that cell is always null, I believe this is because I have a chicken or the egg scenario. The cell is null because cellForRow is never called because the height is zero so no cell need to be loaded.
What is the correct way to vary the height of a PXListView cell based on the text within it?

Answer 1

My solution was to use the width of the table view to calculate the height of each table cell:
- (CGFloat)listView:(PXListView *)listView heightOfRow:(NSUInteger)row{
NSRect textRect = [self.text.attributedStringValue
boundingRectWithSize:NSMakeSize(NSWidth(self.tableView.frame), 0.0f)
options:NSStringDrawingUsesLineFragmentOrigin];
return MAX(90.0f, NSHeight(textRect)+73.0f);
}