#import "PullToRefreshExampleViewController.h"

#import "AppDevKit.h"

#import "UIColor+ThemeColor.h"

#import "SampleVCollectionViewCell.h"

#import "PullToRefreshHelpView.h"

#import "InfiniteScrollingHelpView.h"

static NSString * const CellCollectionViewCellIdentifier = @"SampleVCollectionViewCell";

@interface PullToRefreshExampleViewController () <UICollectionViewDataSource, UICollectionViewDelegate>

@property (weak, nonatomic) IBOutlet UICollectionView *collectionView;

@property (strong, nonatomic) NSMutableArray *flagArray;

@implementation PullToRefreshExampleViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view from its nib.

[self setupView];

}

- (void)didMoveToParentViewController:(UIViewController *)parent

{

[super didMoveToParentViewController:parent];

if (!parent) {

return;

}

[self setupPullToRefreshView];

[self setupInfiniteScrollingView];

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

- (void)setupView

{

self.title = @"Pull to refresh + infinite scroll";

NSString *plistPath = [[NSBundle mainBundle] pathForResource:@"Country-data" ofType:@"plist"];

self.flagArray = [[NSArray arrayWithContentsOfFile:plistPath] mutableCopy];

UINib *cellNib = [UINib nibWithNibName:CellCollectionViewCellIdentifier bundle:nil];

[self.collectionView registerNib:cellNib

forCellWithReuseIdentifier:CellCollectionViewCellIdentifier];

self.collectionView.delegate = self;

self.collectionView.dataSource = self;

self.collectionView.backgroundColor = [UIColor themeBackgroundColor];

UIBarButtonItem *layoutBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemEdit

target:self

action:@selector(layoutSwitchHandler)];

self.navigationItem.rightBarButtonItem = layoutBarButtonItem;

}

- (void)setupPullToRefreshView

{

PullToRefreshHelpView *refreshView = [[PullToRefreshHelpView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, self.view.frame.size.width, 60.0f)];

__weak PullToRefreshExampleViewController *weakSelf = self;

[self.collectionView ADKAddPullToRefreshWithHandleView:refreshView actionHandler:^{

// Delay 3s, for show animation

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3.0f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

NSString *plistPath = [[NSBundle mainBundle] pathForResource:@"Country-data" ofType:@"plist"];

weakSelf.flagArray = [[NSArray arrayWithContentsOfFile:plistPath] mutableCopy];

[weakSelf.collectionView reloadData];

[weakSelf.collectionView.pullToRefreshContentView stopAnimating];

});

}];

self.collectionView.pullToRefreshContentView.autoFadeEffect = YES;

}

- (void)setupInfiniteScrollingView

{

InfiniteScrollingHelpView *infiniteScrollView = [[InfiniteScrollingHelpView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, self.view.frame.size.width, 60.0f)];

__weak PullToRefreshExampleViewController *weakSelf = self;

[self.collectionView ADKAddInfiniteScrollingWithHandleView:infiniteScrollView actionHandler:^{

// Delay 1s, for show animation

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3.0f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

NSString *plistPath = [[NSBundle mainBundle] pathForResource:@"Country-data" ofType:@"plist"];

[weakSelf.flagArray addObjectsFromArray:[NSArray arrayWithContentsOfFile:plistPath]];

[weakSelf.collectionView reloadData];

[weakSelf.collectionView.infiniteScrollingContentView stopAnimating];

});

}];

self.collectionView.infiniteScrollingContentView.autoFadeEffect = YES;

}

- (void)layoutSwitchHandler

{

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Layout Change Notice"

message:@"Simulating layout change when keyboard is appeared. Please scroll to bottom to see the effect. Using ADKUpdateInfiniteScrollingLayout to update layout manually."

preferredStyle:UIAlertControllerStyleAlert];

UIAlertAction *closeAlertAction = [UIAlertAction actionWithTitle:@"OK"

style:UIAlertActionStyleDefault

handler:^(UIAlertAction * _Nonnull action) {

// Simulating layout change when keyboard is appeared and need to adjust contentInsets.

UIEdgeInsets newContentInset = self.collectionView.contentInset;

newContentInset.bottom = 235.0f;

self.collectionView.contentInset = newContentInset;

[self.collectionView ADKUpdateInfiniteScrollingLayout];

}];

[alertController addAction:closeAlertAction];

[self presentViewController:alertController

animated:YES

completion:^{

// Do nothing

}];

}

#pragma mark - UICollectionView delegate methods

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView

{

return 1;

}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section

{

return self.flagArray.count;

}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath

{

UICollectionViewCell *cell = nil;

cell = [collectionView dequeueReusableCellWithReuseIdentifier:CellCollectionViewCellIdentifier

forIndexPath:indexPath];

if (cell) {

NSDictionary *dict = self.flagArray[indexPath.row];

SampleVCollectionViewCell *avengersCell = (SampleVCollectionViewCell *)cell;

avengersCell.imageView.image = [UIImage imageNamed:dict[@"photo"]];

avengersCell.titleLabel.text = dict[@"title"];

avengersCell.descriptionLabel.lineBreakMode = NSLineBreakByTruncatingTail;

avengersCell.descriptionLabel.numberOfLines = 2;

avengersCell.descriptionLabel.text = dict[@"desc"];

}

return cell;

}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section

{

return 0.0f;

}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section

{

return 0.0f;

}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath

{

return [[ADKNibSizeCalculator sharedInstance] sizeForNibNamed:CellCollectionViewCellIdentifier

withStyle:ADKNibFixedHeightScaling];

}