#import "FDDemoTableViewController.h"

@interface FDDemoTableViewController ()

@property (nonatomic, weak) IBOutlet UIStackView *stackView;

@property (nonatomic, weak) IBOutlet UIImageView *forkingdogImageView;

@property (nonatomic, weak) IBOutlet UISegmentedControl *axisSegmentControl;

@property (nonatomic, weak) IBOutlet UISegmentedControl *alignmentSegmentControl;

@property (nonatomic, weak) IBOutlet UISegmentedControl *distributionSegmentControl;

@property (nonatomic, weak) IBOutlet UISlider *spacingSlider;

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

@property (nonatomic, strong) NSMutableArray *mutableAddingViews;

@implementation FDDemoTableViewController

- (void)viewDidLoad {

[super viewDidLoad];

[self updateFromStackViewAttributes];

UIStackView *stackView = [[UIStackView alloc] init];

stackView.axis = UILayoutConstraintAxisHorizontal;

stackView.distribution = UIStackViewDistributionFill;

stackView.alignment = UIStackViewAlignmentTop;

[stackView addArrangedSubview:[[UILabel alloc] init]];

[self.view addSubview:stackView];

}

- (void)updateFromStackViewAttributes {

self.axisSegmentControl.selectedSegmentIndex = self.stackView.axis;

self.alignmentSegmentControl.selectedSegmentIndex = self.stackView.alignment;

self.distributionSegmentControl.selectedSegmentIndex = self.stackView.distribution;

self.spacingLabel.text = [NSString stringWithFormat:@"Spacing (%.1lf)", self.stackView.spacing];

CGSize headerSize = [self.tableView.tableHeaderView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize];

self.tableView.tableHeaderView.frame = CGRectMake(0, 0, headerSize.width ?: CGRectGetWidth(self.view.frame), headerSize.height ?: 150);

self.tableView.tableHeaderView = self.tableView.tableHeaderView;

}

#pragma mark - Actions

- (IBAction)axisSegmentControlValueChangedAction:(UISegmentedControl *)sender {

self.stackView.axis = sender.selectedSegmentIndex;

[self updateFromStackViewAttributes];

}

- (IBAction)alignmentSegmentControlValueChangedAction:(UISegmentedControl *)sender {

self.stackView.alignment = sender.selectedSegmentIndex;

[self updateFromStackViewAttributes];

}

- (IBAction)distributionSegmentControlValueChangedAction:(UISegmentedControl *)sender {

self.stackView.distribution = sender.selectedSegmentIndex;

[self updateFromStackViewAttributes];

}

- (IBAction)spacingSliderValueChangedAction:(UISlider *)sender {

self.stackView.spacing = sender.value;

[self updateFromStackViewAttributes];

}

- (IBAction)hideAction:(id)sender {

self.forkingdogImageView.hidden ^= 1;

}

- (IBAction)addAction:(id)sender {

if (!self.mutableAddingViews) {

self.mutableAddingViews = @[].mutableCopy;

}

UILabel *label = [[UILabel alloc] init];

label.font = [UIFont systemFontOfSize:25];

label.backgroundColor = [UIColor colorWithWhite:arc4random_uniform(255) / 255.0 alpha:1];

label.text = @(self.mutableAddingViews.count).stringValue;

[self.stackView addArrangedSubview:label];

[self.mutableAddingViews addObject:label];

[self updateFromStackViewAttributes];

}

- (IBAction)removeAction:(id)sender {

if (self.mutableAddingViews.count == 0) {

return;

}

UILabel *label = self.mutableAddingViews.lastObject;

[label removeFromSuperview];

[self.mutableAddingViews removeObject:label];

[self updateFromStackViewAttributes];

}