textmate/Frameworks/OakTextView/src/LiveSearchView.mm

#import "LiveSearchView.h"
#import <OakAppKit/OakUIConstructionFunctions.h>

@interface LiveSearchView ()
@property (nonatomic) NSView* divider;
@end

@implementation LiveSearchView
- (id)initWithFrame:(NSRect)aRect
{
	if(self = [super initWithFrame:aRect])
	{
		self.divider = OakCreateHorizontalLine([NSColor colorWithCalibratedWhite:0.500 alpha:1], [NSColor colorWithCalibratedWhite:0.750 alpha:1]);

		self.textField = [[NSTextField alloc] initWithFrame:NSZeroRect];
		self.textField.focusRingType = NSFocusRingTypeNone;

		NSDictionary* views = @{
			@"divider"   : self.divider,
			@"textField" : self.textField,
		};

		for(NSView* view in [views allValues])
		{
			[view setTranslatesAutoresizingMaskIntoConstraints:NO];
			[self addSubview:view];
		}

		[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[divider]|" options:0 metrics:nil views:views]];
		[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-(8)-[textField]-(8)-|" options:0 metrics:nil views:views]];
		[self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[divider]-(8)-[textField]-(8)-|" options:0 metrics:nil views:views]];
	}
	return self;
}

- (BOOL)isFlipped
{
	return YES;
}

- (BOOL)isOpaque
{
	return YES;
}

- (void)drawRect:(NSRect)dirtyRect
{
	NSColor* cornerColor = [NSColor colorWithDeviceWhite:239.0/255.0 alpha:1];
	NSColor* middleColor = [NSColor colorWithDeviceWhite:223/255.0 alpha:1];
	int angle = 270;

	NSGradient* aGradient = [[NSGradient alloc] initWithColorsAndLocations:
		cornerColor, 0.0,
		middleColor, 0.5,
		cornerColor, 1.0, nil];

	NSRect bounds = NSMakeRect(self.bounds.origin.x, self.bounds.origin.y+1, self.bounds.size.width, self.bounds.size.height-1);
	[aGradient drawInRect:bounds angle:angle];
}
@end