Coloring rows in View based NSTableview

Question

I have a view based nstableview. I want to color entire row based on some condtion for which I have used code below

- (NSTableRowView *)tableView:(NSTableView *)         


        

Answer 1

For anyone else who hits this and wants a custom NSTableRowView backgroundColor, there are two approaches.

1. If you don't need custom drawing, simply set rowView.backgroundColor in - (void)tableView:(NSTableView *)tableView didAddRowView:(NSTableRowView *)rowView forRow:(NSInteger)row in your NSTableViewDelegate.

   Example:

   - (void)tableView:(NSTableView *)tableView
       didAddRowView:(NSTableRowView *)rowView
              forRow:(NSInteger)row {
   
       rowView.backgroundColor = [NSColor redColor];
   
   }
   

2. If you do need custom drawing, create your own NSTableRowView subclass with desired drawRect. Then, implement the following in NSTableViewDelegate:

   Example:

   - (NSTableRowView *)tableView:(NSTableView *)tableView
                   rowViewForRow:(NSInteger)row {
       static NSString* const kRowIdentifier = @"RowView";
       MyRowViewSubclass* rowView = [tableView makeViewWithIdentifier:kRowIdentifier owner:self];
       if (!rowView) {
           // Size doesn't matter, the table will set it
           rowView = [[[MyRowViewSubclass alloc] initWithFrame:NSZeroRect] autorelease];
   
           // This seemingly magical line enables your view to be found
           // next time "makeViewWithIdentifier" is called.
           rowView.identifier = kRowIdentifier; 
       }
   
       // Can customize properties here. Note that customizing
       // 'backgroundColor' isn't going to work at this point since the table
       // will reset it later. Use 'didAddRow' to customize if desired.
   
       return rowView;
   }