tederen_ios/smartRhino/Project/Other/Util/RefreshView/GHRefreshCollectionView.m

//
//  GHRefreshCollectionView.m
//  GameHelper
//
//  Created by 青秀斌 on 16/12/29.
//  Copyright © 2016年 kylincc. All rights reserved.
//

#import "GHRefreshCollectionView.h"
#import "GHRefreshHeader.h"
#import "GHRefreshFooter.h"
#import "UIView+GHBlank.h"
//#import <SVProgressHUD/SVProgressHUD.h>
#import "AFNetworkReachabilityManager.h"

#define NET_CONNECT_ERROR @"当前网络不给力,请稍后重试"

@interface GHRefreshCollectionView ()
@property (strong, nonatomic) NSMutableArray *dataArray;
@property (assign, nonatomic) NSUInteger pageIndex;
@property (assign, nonatomic) NSUInteger offset;
@end

@implementation GHRefreshCollectionView

- (instancetype)init {
    self = [super init];
    if (self) {
        [self awakeFromNib];
    }
    return self;
}

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

- (instancetype)initWithFrame:(CGRect)frame collectionViewLayout:(UICollectionViewLayout *)layout {
    self = [super initWithFrame:frame collectionViewLayout:layout];
    if (self) {
        [self awakeFromNib];
    }
    return self;
}

- (void)awakeFromNib {
    [super awakeFromNib];
    self.pageIndex = 1;
    self.offset = 0;
    self.allowShowMore = YES;
    self.allowShowBlank = YES;
    self.allowShowNoNetworkBlank = YES;
    self.blankImage = nil;
    self.blankTitle = nil;
    self.blankMessage = nil;
}

- (void)setRefreshDelegate:(id<GHRefreshCollectionViewDelegate>)refreshDelegate {
    _refreshDelegate = refreshDelegate;
    
    if ([self.refreshDelegate respondsToSelector:@selector(collectionView:pageIndex:offset:success:failure:)]) {
        [self addRefreshHeader];
    }
}

- (void)setAllowShowMore:(BOOL)allowShowMore {
    _allowShowMore = allowShowMore;
    if(_allowShowMore){
        self.mj_footer.hidden = NO;
    }else{
        self.mj_footer.hidden = YES;
    }
//    if (self.mj_footer) {
//        [self.mj_footer removeFromSuperview];
//    }
}

-(void)setAllowShowBlank:(BOOL)allowShowBlank{
    _allowShowBlank = allowShowBlank;
    if(!_allowShowBlank){
        [self dismissBlank];
    }
}

//针对个人中心主页 - 先出现一个暂无数据的空白页，之后才出现正确的空白页
-(void)closeBlankView{
    [self dismissBlank];
}

/**********************************************************************/
#pragma mark - Private
/**********************************************************************/

- (void)addRefreshHeader {
    if (self.mj_header) {
        return;
    }
    
    GHRefreshHeader *header = [GHRefreshHeader headerWithRefreshingBlock:^{
        NSUInteger pageIndex = 1;
        NSInteger offset = 0;
        
        WS(weakSelf);
        [self.refreshDelegate collectionView:self pageIndex:pageIndex offset:offset success:^(NSArray * _Nullable list, BOOL hasNext) {
            [weakSelf.mj_header endRefreshing];
            
            //添加RefreshFooter
            [weakSelf addRefreshFooter];
            if (hasNext) {
                [weakSelf.mj_footer endRefreshing];
            } else {
                [weakSelf.mj_footer endRefreshingWithNoMoreData];
            }
            
            //加载数据
            weakSelf.pageIndex = pageIndex;
            weakSelf.offset = offset;
            if (weakSelf.reloadView) {
                weakSelf.reloadView(list);
            } else {
                weakSelf.dataArray = [list mutableCopy];
                [weakSelf reloadData];
            }
            
            if(self.noDataShowBlankByAddFakeDataFlag){
                weakSelf.mj_footer.hidden = YES;
                [weakSelf dismissBlank];
                [weakSelf showBlankWithImage:weakSelf.blankImage?:@"no_data"
                                       title:weakSelf.blankTitle?:@"暂无数据"
                                     message:weakSelf.blankMessage
                                      action:nil offsetY:weakSelf.offsetY];
            }else{
                //显示占位图
                if (weakSelf.allowShowBlank && weakSelf.dataArray.count==0) {
                    weakSelf.mj_footer.hidden = YES;
                    [weakSelf showBlankWithImage:weakSelf.blankImage?:@"no_data"
                                           title:weakSelf.blankTitle?:@"暂无数据"
                                         message:weakSelf.blankMessage
                                          action:nil offsetY:weakSelf.offsetY];
                } else {
                    weakSelf.mj_footer.hidden = NO;
                    [weakSelf dismissBlank];
                }
            }
            
        } failure:^(NSError *error) {
            [weakSelf.mj_header endRefreshing];
            
            //显示占位图
            NSString *blankTitle = error.localizedDescription?:weakSelf.blankTitle;
            if(self.noDataShowBlankByAddFakeDataFlag){
                weakSelf.mj_footer.hidden = YES;
                [weakSelf dismissBlank];
                
                BOOL isHaveNet = NO;
                if (AFNetworkReachabilityManager.sharedManager.networkReachabilityStatus == AFNetworkReachabilityStatusUnknown || AFNetworkReachabilityManager.sharedManager.networkReachabilityStatus == AFNetworkReachabilityStatusNotReachable) {
                    isHaveNet = YES;
                }
                
                if (weakSelf.allowShowNoNetworkBlank && isHaveNet) {
                    [weakSelf showBlankWithImage:@"no_network"
                                           title:NET_CONNECT_ERROR
                                         message:nil
                                          action:nil offsetY:weakSelf.offsetY];
                } else {
                    [weakSelf showBlankWithImage:@"failed_to_load"
                                           title:blankTitle?:@"加载失败"
                                         message:weakSelf.blankMessage
                                          action:nil offsetY:weakSelf.offsetY];
                }
            }else{
                if (weakSelf.allowShowBlank && weakSelf.dataArray.count==0) {
                    weakSelf.mj_footer.hidden = YES;
                    
                    BOOL isHaveNet = NO;
                    if (AFNetworkReachabilityManager.sharedManager.networkReachabilityStatus == AFNetworkReachabilityStatusUnknown || AFNetworkReachabilityManager.sharedManager.networkReachabilityStatus == AFNetworkReachabilityStatusNotReachable) {
                        isHaveNet = YES;
                    }
                    
                    if (weakSelf.allowShowNoNetworkBlank && isHaveNet) {
                        [weakSelf showBlankWithImage:@"no_network"
                                               title:NET_CONNECT_ERROR
                                             message:nil
                                              action:nil offsetY:weakSelf.offsetY];
                    } else {
                        [weakSelf showBlankWithImage:@"failed_to_load"
                                               title:blankTitle?:@"加载失败"
                                             message:weakSelf.blankMessage
                                              action:nil offsetY:weakSelf.offsetY];
                    }
                } else {
                    weakSelf.mj_footer.hidden = NO;
                    [weakSelf dismissBlank];
//                    [SVProgressHUD showErrorWithStatus:blankTitle];
                }
            }
            
        }];
    }];
    self.mj_header = header;
}

- (void)addRefreshFooter {
    if (!self.allowShowMore) {
        return;
    }
    if (self.mj_footer) {
        return;
    }
    
    GHRefreshFooter *footer = [GHRefreshFooter footerWithRefreshingBlock:^{
        NSUInteger pageIndex = self.pageIndex + 1;
        NSInteger offset = self.dataArray.count + 1;
        
        WS(weakSelf);
        [self.refreshDelegate collectionView:self pageIndex:pageIndex offset:offset success:^(NSArray * _Nullable list, BOOL hasNext) {
            if (hasNext) {
                [weakSelf.mj_footer endRefreshing];
            } else {
                [weakSelf.mj_footer endRefreshingWithNoMoreData];
            }
            
            //加载数据
            weakSelf.pageIndex = pageIndex;
            weakSelf.offset = offset;
            if (weakSelf.reloadView) {
                weakSelf.reloadView(list);
            } else {
                [weakSelf.dataArray addObjectsFromArray:list];
                [weakSelf reloadData];
            }
            
            if(self.noDataShowBlankByAddFakeDataFlag){
                weakSelf.mj_footer.hidden = YES;
                [weakSelf dismissBlank];
                [weakSelf showBlankWithImage:weakSelf.blankImage?:@"no_data"
                                       title:weakSelf.blankTitle?:@"暂无数据"
                                     message:weakSelf.blankMessage
                                      action:nil offsetY:weakSelf.offsetY];
            }else{
                //显示占位图
                if (weakSelf.allowShowBlank && weakSelf.dataArray.count==0) {
                    weakSelf.mj_footer.hidden = YES;
                    [weakSelf showBlankWithImage:weakSelf.blankImage?:@"no_data"
                                           title:weakSelf.blankTitle?:@"暂无数据"
                                         message:weakSelf.blankMessage
                                          action:nil offsetY:weakSelf.offsetY];
                } else {
                    weakSelf.mj_footer.hidden = NO;
                    [weakSelf dismissBlank];
                }
            }
            
        } failure:^(NSError *error) {
            [weakSelf.mj_footer endRefreshing];
            
            //显示占位图
            NSString *blankTitle = error.localizedDescription?:weakSelf.blankTitle;
            if(self.noDataShowBlankByAddFakeDataFlag){
                weakSelf.mj_footer.hidden = YES;
                [weakSelf dismissBlank];
                
                BOOL isHaveNet = NO;
                if (AFNetworkReachabilityManager.sharedManager.networkReachabilityStatus == AFNetworkReachabilityStatusUnknown || AFNetworkReachabilityManager.sharedManager.networkReachabilityStatus == AFNetworkReachabilityStatusNotReachable) {
                    isHaveNet = YES;
                }
                
                if (weakSelf.allowShowNoNetworkBlank && isHaveNet) {
                    [weakSelf showBlankWithImage:@"no_network"
                                           title:NET_CONNECT_ERROR
                                         message:nil
                                          action:nil offsetY:weakSelf.offsetY];
                } else {
                    [weakSelf showBlankWithImage:@"failed_to_load"
                                           title:blankTitle?:@"加载失败"
                                         message:weakSelf.blankMessage
                                          action:nil offsetY:weakSelf.offsetY];
                }
            }else{
                if (weakSelf.allowShowBlank && weakSelf.dataArray.count==0) {
                    weakSelf.mj_footer.hidden = YES;
                    
                    BOOL isHaveNet = NO;
                    if (AFNetworkReachabilityManager.sharedManager.networkReachabilityStatus == AFNetworkReachabilityStatusUnknown || AFNetworkReachabilityManager.sharedManager.networkReachabilityStatus == AFNetworkReachabilityStatusNotReachable) {
                        isHaveNet = YES;
                    }
                    
                    if (weakSelf.allowShowNoNetworkBlank && isHaveNet) {
                        [weakSelf showBlankWithImage:@"no_network"
                                               title:NET_CONNECT_ERROR
                                             message:nil
                                              action:nil offsetY:weakSelf.offsetY];
                    } else {
                        [weakSelf showBlankWithImage:@"failed_to_load"
                                               title:blankTitle?:@"加载失败"
                                             message:weakSelf.blankMessage
                                              action:nil offsetY:weakSelf.offsetY];
                    }
                } else {
                    weakSelf.mj_footer.hidden = NO;
                    [weakSelf dismissBlank];
//                    [SVProgressHUD showErrorWithStatus:blankTitle];
                }
            }
            
        }];
    }];
    self.mj_footer = footer;
}

/**********************************************************************/
#pragma mark - Public
/**********************************************************************/

- (void)refreshData {
    [self.mj_header beginRefreshing];
}

@end