/*

 File: APLCoffeeControl.m

 Abstract: Toggles the visibility coffee on the visible floor plan.

 Version: 1.0

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 */

#import "APLCoffeeControl.h"

#import "APLCommon.h"

@interface APLCoffeeControl ()

- (IBAction)handleSwipe:(UISwipeGestureRecognizer *)swipeGestureRecognizer;

@end

@implementation APLCoffeeControl

#pragma mark - UIControl overrides

// Custom drawing method to draw the coffer control when it is enabled

//

- (void)drawRect:(CGRect)rect

{

    if ( self.enabled )

    {

        CGRect bounds = self.bounds;

        BOOL isOn = self.isOn;

        // Draw label

        NSAttributedString *labelAttributedString = [[NSAttributedString alloc] initWithString:@"Coffee" attributes:@{ NSFontAttributeName : [UIFont boldSystemFontOfSize:kFontSize * 2.0], NSForegroundColorAttributeName : [UIColor blackColor] }];

        [labelAttributedString drawAtPoint:CGPointMake(CGRectGetMidX(bounds) - labelAttributedString.size.width * 0.5, kPadding * 2.0)];

        // Draw state

        NSAttributedString *offStateAttributedString = [[NSAttributedString alloc] initWithString:@"OFF" attributes:@{ NSFontAttributeName : [UIFont boldSystemFontOfSize:kFontSize], NSForegroundColorAttributeName : ( !isOn ) ? [UIColor blackColor] : [UIColor lightGrayColor] }];

        NSAttributedString *onStateAttributedString = [[NSAttributedString alloc] initWithString:@"ON" attributes:@{ NSFontAttributeName : [UIFont boldSystemFontOfSize:kFontSize], NSForegroundColorAttributeName : ( isOn ) ? [UIColor blackColor] : [UIColor lightGrayColor] }];

        if ( isOn )

        {

            [offStateAttributedString drawAtPoint:CGPointMake(CGRectGetMidX(bounds) + CGRectGetWidth(bounds) * 0.33 - offStateAttributedString.size.width * 0.5, CGRectGetMaxY(bounds) - kPadding * 2.0 - offStateAttributedString.size.height)];

            [onStateAttributedString drawAtPoint:CGPointMake(CGRectGetMidX(bounds) - onStateAttributedString.size.width * 0.5, CGRectGetMaxY(bounds) - kPadding * 2.0 - onStateAttributedString.size.height)];

        }

        else

        {

            [offStateAttributedString drawAtPoint:CGPointMake(CGRectGetMidX(bounds) - offStateAttributedString.size.width * 0.5, CGRectGetMaxY(bounds) - kPadding * 2.0 - offStateAttributedString.size.height)];

            [onStateAttributedString drawAtPoint:CGPointMake(CGRectGetMidX(bounds) - CGRectGetWidth(bounds) * 0.33 - onStateAttributedString.size.width * 0.5, CGRectGetMaxY(bounds) - kPadding * 2.0 - onStateAttributedString.size.height)];

        }

    }

}

// Override the enable property setter to redraw the control

//

- (void)setEnabled:(BOOL)enabled

{

    [super setEnabled:enabled];

    [self setNeedsDisplay];

}

#pragma mark - UIAccessibilityElement (UIAccessibilityTraitButton)

- (BOOL)isAccessibilityElement

{

    return YES;

}

- (NSString *)accessibilityHint

{

    return @"Show or hide coffee locations";

}

- (NSString *)accessibilityLabel

{

    return @"Coffee";

}

- (NSString *)accessibilityValue

{

    return ( self.isOn ) ? @"On" : @"Off";

}

- (UIAccessibilityTraits)accessibilityTraits

{

    return UIAccessibilityTraitButton;

}

// Implement accessibilityActivate on an element in order to handle the default action.

// For example, if a native control requires a swipe gesture, you may implement this method so that a

// VoiceOver user will perform a double-tap to activate the item.

// If your implementation successfully handles activate, return YES, otherwise return NO.

// default == NO

//

- (BOOL)accessibilityActivate

{

    self.on = !self.isOn;

    return YES;

}

#pragma mark - Properties

- (void)setOn:(BOOL)on

{

    if ( on != _on )

    {

        _on = on;

        [self sendActionsForControlEvents:UIControlEventValueChanged];

        [self setNeedsDisplay];

    }

}

#pragma mark - Actions

- (IBAction)handleSwipe:(UISwipeGestureRecognizer *)swipeGestureRecognizer

{

    UISwipeGestureRecognizerDirection direction = swipeGestureRecognizer.direction;

    BOOL isOn = self.isOn;

    if ( (direction == UISwipeGestureRecognizerDirectionLeft && isOn) || (direction == UISwipeGestureRecognizerDirectionRight && !isOn) )

    {

        self.on = !isOn;

    }

}

@end