View-based NSTableView question
View-based NSTableView question
- Subject: View-based NSTableView question
- From: TJ <email@hidden>
- Date: Thu, 12 Jul 2012 00:06:11 +0200
Hey guys,
I'm trying to replace my old cell-based NSTableView system with the new 10.7+ view-based one without using Xcode's Interface Builder for the table view and column creation.
What I am doing now is creating an NSTableCellView inside NSTableView's delegate method [-NSTableView tableView:viewForTableColumn:row:]:
- (NSView *)tableView:(NSOutlineView *)aTableView viewForTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row
{
NSString *identifier = [tableColumn identifier];
NSString *stringValue = [self tableView:aTableView objectValueForTableColumn:tableColumn row:row];
NSTableCellView *cellView = [aTableView makeViewWithIdentifier:identifier owner:self];
if (cellView == nil)
{
// Create cell view
cellView = [[[NSTableCellView alloc] initWithFrame:[cellView frame]] autorelease];
cellView.identifier = identifier;
// Create text field
NSTextField *textField = [[[NSTextField alloc] initWithFrame:[cellView frame]] autorelease];
[textField setIdentifier:identifier];
[textField setBordered:NO];
[textField setDrawsBackground:NO];
[textField setStringValue: stringValue];
cellView.textField = textField;
[cellView addSubview:textField];
return cellView:
}
[cellView.textField stringValue];
return cellView;
}
The problem here is that I don't have any idea where and how to get and set the frame of the cell. As you can see during the creation of NSTableCellView I'm basically using an NSZeroRect because [cellView frame] is nil. I subclassed NSTableCellView and added a red color for the background in order to see if the NSZeroRect gets automatically updated to the current cell rect - it does work. But it just doesn't make sense to create a subview of NSTableCellView with a zero-frame... is there a method inside NSTableCellView I should subclass and position the NSTextField? Or is it common to get the frame inside -viewForTableColumn and adjusting the text field there? What's the way Apple had in mind concerning programmatically creating a view-based NSTableView? I couldn't find a lot of information on this, the demo video on developer.apple.com directly uses an NSTextField as the return cell-view but my view needs to be more complex than that. I am pretty sure I just missed something very important here. ;-) And my second question is - is it possible to create a cell view which is bigger than one row, thus it's overlaying other rows (I'm not customizing my table view to death, I have a good reason for cell views being positioned over several rows).
Thank you very much in advance!
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