/*

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

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 An accessibility object representing a single tic tac toe piece.

 */

#import "AAPLTicTacToeSquareAccessibilityElement.h"

#import "AAPLTicTacToeSquare.h"

#import "AAPLTicTacToeBoard.h"

@implementation AAPLTicTacToeSquareAccessibilityElement

- (instancetype)initWithRow:(NSUInteger)row column:(NSUInteger)column delegate:(id <AAPLTicTacToeBoardViewDelegate>)delegate

{

    self = [super init];

    if ( self != nil )

    {

        self.row = row;

        self.column = column;

        self.delegate = delegate;

    }

    return self;

}

- (NSRect)accessibilityFrame

{

    return [super accessibilityFrame];

}

- (id)accessibilityParent

{

    return [super accessibilityParent];

}

- (NSString *)accessibilityLabel

{

    NSUInteger row = self.row;

    NSUInteger column = self.column;

    AAPLTicTacToeSquare *square = [self.delegate squareAtRow:row column:column];

    return [AAPLTicTacToeBoard descriptionForSquare:square row:row column:column];

}

- (BOOL)accessibilityPerformPress

{

    [self.delegate playSquareAtRow:self.row column:self.column];

    return YES;

}

// It is not legal to play in an occupied square or when the game is over, disable the button in these cases.

- (BOOL)isAccessibilityEnabled

{

    AAPLTicTacToeSquare *square = [self.delegate squareAtRow:self.row column:self.column];

    BOOL gameOver = [self.delegate isGameOver];

    return !gameOver && square.isEmpty;

}

@end