yh_kd_liangzhemai/YouHuiProject/YouHui/Classification/View/LZMClassifyR...

//
//  LZMClassifyRightView.m
//  YouHuiProject
//
//  Created by 小花 on 2018/4/28.
//  Copyright © 2018年 kuxuan. All rights reserved.
//

#import "LZMClassifyRightView.h"
#import "LZMClassifyRightCollectionViewCell.h"
#import "LZMCategoryModel.h"
#import "LZMSecondCategoryModel.h"

static NSString *const itemIdentifier = @"itemIdentifier";

@interface LZMClassifyRightView()<UICollectionViewDelegate,UICollectionViewDataSource>

@property (nonatomic,strong)UICollectionView *collectionView;
@property (nonatomic,strong)UICollectionViewFlowLayout *flowLayout;
@property (nonatomic,strong)UIButton  *topButton;
@property (nonatomic       )NSInteger currentSelect;
@end

@implementation LZMClassifyRightView

- (instancetype)initWithFrame:(CGRect)frame{
    if (self == [super initWithFrame:frame]) {
        [self setupUI];
    }
    return self;
}

- (void)setupUI{
    UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc]init];
    self.flowLayout=flowLayout;
    flowLayout.itemSize = CGSizeMake(self.width / 3, FITSIZE(114));
    flowLayout.minimumLineSpacing = 0;
    flowLayout.minimumInteritemSpacing = 0;
    flowLayout.headerReferenceSize=CGSizeMake(self.width, 0);
    self.collectionView = [[UICollectionView alloc]initWithFrame:CGRectMake(0, 0, self.width, self.height) collectionViewLayout:flowLayout];
    self.collectionView.backgroundColor = [UIColor whiteColor];
    [self.collectionView registerClass:[LZMClassifyRightCollectionViewCell class] forCellWithReuseIdentifier:itemIdentifier];
    [self.collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"HeaderView"];  //  一定要设置
    self.collectionView.showsVerticalScrollIndicator = NO;
    self.collectionView.delegate = self;
    self.collectionView.dataSource = self;
    [self addSubview:self.collectionView];
}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
    return self.dataSource.count;
}

- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    LZMClassifyRightCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:itemIdentifier forIndexPath:indexPath];
    LZMSecondCategoryModel *model = self.dataSource[indexPath.item];
    cell.model = model;
    return cell;
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
    [self.collectionView deselectItemAtIndexPath:indexPath animated:YES];
    self.currentSelect=indexPath.row;
    if (self.selectItemBlock) {
        self.selectItemBlock(indexPath.item);
    }
}

- (void)setDataSource:(NSArray *)dataSource{
    _dataSource = dataSource;
    self.flowLayout.headerReferenceSize=CGSizeMake(self.width, 79);
    [self.collectionView reloadData];
}


- (UICollectionReusableView *) collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
    UICollectionReusableView *headerView = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"HeaderView" forIndexPath:indexPath];
    UIButton *btnView=[headerView viewWithTag:8888];
    if (!btnView) {
        btnView=self.topButton;
        btnView.frame=CGRectMake(FITSIZE(16), 0, self.width-2*FITSIZE(16), self.flowLayout.headerReferenceSize.height);
        [headerView addSubview:btnView];
        btnView.layer.cornerRadius=5;
        btnView.layer.masksToBounds=YES;
        btnView.tag=8888;
        self.topButton=btnView;
        [[btnView rac_signalForControlEvents:UIControlEventTouchUpInside] subscribeNext:^(id x) {
            if (self.selectHeader) {
                self.selectHeader(self.model);
            }
        }];
    }
    
    btnView.height=self.flowLayout.headerReferenceSize.height;
    btnView.backgroundColor=[UIColor yhGrayColor];
    headerView.backgroundColor=[UIColor clearColor];
    return headerView;
}

-(UIButton *)topButton{
    if (!_topButton) {
        _topButton=[UIButton buttonWithType:UIButtonTypeCustom];
    }
    return _topButton;
}

//
//-(void)setBannerImgUrl:(NSString *)bannerImgUrl{
//    if (bannerImgUrl &&![bannerImgUrl isEqualToString:@""]) {//数据存在
//        self.flowLayout.headerReferenceSize=CGSizeMake(SCREEN_WIDTH, 79);
//        self.topButton.hidden=NO;
//        [self.topButton setImage:[UIImage imageNamed:bannerImgUrl] forState:UIControlStateNormal];
//    }else{ //没有数据
//        self.flowLayout.headerReferenceSize=CGSizeMake(SCREEN_WIDTH, 0);
//        self.topButton.hidden=YES;
//    }
//
//
//}


-(void)setModel:(AdPopModel *)model{
    _model=model;
    if (model.img&&![model.img isEqualToString:@""]) {
        self.flowLayout.headerReferenceSize=CGSizeMake(SCREEN_WIDTH, 79);
        [self.topButton sd_setImageWithURL:[NSURL URLWithString:model.img] forState:UIControlStateNormal];
        self.topButton.hidden=NO;
    }else{
        self.flowLayout.headerReferenceSize=CGSizeMake(SCREEN_WIDTH, 0);
        self.topButton.hidden=YES;
    }
    
    
}



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}
@end