Programmatically creating an NSTextField with label

sampletextfield.m

NSTextField* xxxUIControlCreateTextField(NSStackView* parent, const char* label, const char* default_value, u32 tag, float preferred_width, float view_width)
{
	NSStackView* stack = [[NSStackView alloc] init];

	stack.translatesAutoresizingMaskIntoConstraints = NO;
	stack.orientation = NSUserInterfaceLayoutOrientationHorizontal;
	stack.spacing = 4;

	NSTextField* tf_label = nil;

	if (label)
	{
		tf_label = [NSTextField labelWithString:[NSString stringWithUTF8String:label]];
		tf_label.tag = -1;
		tf_label.editable = NO;
		tf_label.alignment = NSTextAlignmentRight;
		tf_label.font = [NSFont systemFontOfSize:[NSFont smallSystemFontSize]];
		xxxUIControlMetrics m = xxxUIControlMetricsList[UIControlLabel];
		//NSRect frame = NSMakeRect(m.left_edge, *view_start_y + 2, m.right_edge - m.left_edge, m.height);
		NSRect frame = NSMakeRect(0.0f, 0.0f, m.right_edge - m.left_edge, m.height);
		tf_label.frame = frame;

		[stack addView:tf_label inGravity:NSStackViewGravityLeading];
		//[parent addSubview:tf];
	}

	NSString* defaultString = @"";

	if (default_value)
	{
		defaultString = [NSString stringWithUTF8String:default_value];
	}

	NSTextField* tf = [NSTextField textFieldWithString:defaultString];
	tf.tag = tag;
	tf.editable = YES;
	tf.font = [NSFont systemFontOfSize:[NSFont smallSystemFontSize]];

	UIControlMetrics m = xxxUIControlMetricsList[xxxUIControlTextField];
	float width = (preferred_width > 0.0f) ? preferred_width : view_width - m.left_edge - SKY_UI_CONTROL_RIGHT_MARGIN;
	NSRect frame = NSMakeRect(0, 0, width, m.height);
	tf.frame = frame;

	[stack addView:tf inGravity:NSStackViewGravityLeading];


	NSDictionary* views;

	if (label)
	{
		views = @{@"label": tf_label, @"tf": tf};
		[parent addConstraints:
			[NSLayoutConstraint constraintsWithVisualFormat: @"H:|-[label(==60)]-[tf]-|"
													options: 0
													metrics: nil
													  views: views]];
	}
	else
	{
		views = @{@"tf": tf};
		[parent addConstraints:
			[NSLayoutConstraint constraintsWithVisualFormat: @"H:|-[tf]-|"
													options: 0
													metrics: nil
													  views: views]];
	}

	[parent addView:stack inGravity:NSStackViewGravityTop];

	return tf;
}