/*

 Copyright (C) 2016 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 An example demonstrating adding accessibility to an NSView subclass that behaves like a button by implementing the NSAccessibilityButton protocol.

 */

#import "AAPLTicTacToeButtonView.h"

@interface AAPLTicTacToeButtonView ()

@property (nonatomic) BOOL depressed;

@end

@implementation AAPLTicTacToeButtonView

- (BOOL)acceptsFirstResponder

{

    return YES;

}

- (void)drawFocusRingMask

{

    NSRectFill(self.bounds);

}

- (NSRect)focusRingMaskBounds

{

    return self.bounds;

}

- (void)mouseDown:(NSEvent *)theEvent

{

    [super mouseUp:theEvent];

    self.depressed = YES;

    [self setNeedsDisplay:YES];

}

- (void)mouseUp:(NSEvent *)theEvent

{

    [super mouseUp:theEvent];

    self.depressed = NO;

    [self setNeedsDisplay:YES];

    [self.delegate buttonPressed:self];

}

- (void)drawRect:(NSRect)dirtyRect

{

    [super drawRect:dirtyRect];

    if (self.depressed)

    {

        [[NSColor grayColor] set];

    }

    else

    {

        [[NSColor lightGrayColor] set];

    }

    [NSBezierPath fillRect:self.bounds];

    [[NSColor blackColor] set];

    [NSBezierPath setDefaultLineWidth:2.0];

    NSRect insetRect = NSInsetRect(self.bounds, 1, 1);

    [NSBezierPath strokeRect:insetRect];

    NSString *text = @"Restart Game";

    NSRect textRect = NSMakeRect(20, -15, self.bounds.size.width, self.bounds.size.height);

    NSDictionary *textAttributes = @{ NSFontAttributeName : [NSFont fontWithName:@"Andale Mono" size:16.0f],

                                      NSForegroundColorAttributeName : [NSColor blackColor] };

    [text drawInRect:textRect withAttributes:textAttributes];

}

- (void)performPress

{

    // Set down and release after momentary delay so the button flickers.

    [self pressDown];

    double delayInSeconds = 0.1;

    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);

    dispatch_after(popTime, dispatch_get_main_queue(), ^(void){

        [self pressUpInside:YES andHighlight:NO];

    });

}

- (void)pressDown

{

    self.depressed = YES;

    [self setNeedsDisplay:YES];

}

- (void)pressUpInside:(BOOL)inside andHighlight:(BOOL)shouldHighlight

{

    self.depressed = NO;

    [self setNeedsDisplay:YES];

    if ( inside )

    {

        [self.delegate buttonPressed:self];

    }

}

#pragma mark Keyboard events

- (void)keyDown:(NSEvent *)keyEvent

{

    NSString *characters = [keyEvent characters];

    if ([characters isEqualToString:@" "])

    {

        [self performPress];

    }

    else

    {

        [super keyDown:keyEvent];

    }

}

# pragma mark - Accessibility

- (NSString *)accessibilityLabel

{

    return NSLocalizedString(@"reset game", nil);

}

- (BOOL)accessibilityPerformPress

{

    [self.delegate buttonPressed:self];

    return YES;

}

@end