/*

Copyright (C) 2015 Apple Inc. All Rights Reserved.

See LICENSE.txt for this sample’s licensing information

Abstract:

A simple view controller that manages a content view and an ADBannerView.

*/

#import "TextViewController.h"

#import "BannerViewController.h"

@interface TextViewController ()

@property (nonatomic, weak) IBOutlet UITextView *textView;

@property (nonatomic, weak) IBOutlet UILabel *timerLabel;

@property (nonatomic, strong) NSTimer *timer;

@property (nonatomic, assign) CFTimeInterval ticks;

@end

@implementation TextViewController

- (void)dealloc

{

    [[NSNotificationCenter defaultCenter] removeObserver:self name:BannerViewActionWillBegin object:nil];

    [[NSNotificationCenter defaultCenter] removeObserver:self name:BannerViewActionDidFinish object:nil];

}

- (void)setText:(NSString *)text

{

    _text = [text copy];

    self.textView.text = text;

}

- (void)startTimer

{

    if (self.timer == nil) {

        self.timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(timerTick:) userInfo:nil repeats:YES];

    }

}

- (void)stopTimer

{

    [self.timer invalidate];

    self.timer = nil;

}

- (void)timerTick:(NSTimer *)timer

{

    // Timers are not guaranteed to tick at the nominal rate specified, so this isn't technically accurate.

    // However, this is just an example to demonstrate how to stop some ongoing activity, so we can live with that inaccuracy.

    self.ticks += 0.1;

    double seconds = fmod(self.ticks, 60.0);

    double minutes = fmod(trunc(self.ticks / 60.0), 60.0);

    double hours = trunc(self.ticks / 3600.0);

    self.timerLabel.text = [NSString stringWithFormat:@"%02.0f:%02.0f:%04.1f", hours, minutes, seconds];

}

- (void)viewDidLoad

{

    [super viewDidLoad];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willBeginBannerViewActionNotification:) name:BannerViewActionWillBegin object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didFinishBannerViewActionNotification:) name:BannerViewActionDidFinish object:nil];

}

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    self.textView.text = self.text;

}

- (void)viewDidAppear:(BOOL)animated

{

    [super viewDidAppear:animated];

    [self startTimer];

}

- (void)viewDidDisappear:(BOOL)animated

{

    [super viewDidDisappear:animated];

    [self stopTimer];

}

- (void)willBeginBannerViewActionNotification:(NSNotification *)notification

{

    [self stopTimer];

}

- (void)didFinishBannerViewActionNotification:(NSNotification *)notification

{

    [self startTimer];

}

@end