cdts/xdts-ios 3/TreeHole/Code/Base/PYTableViewController.m

//
//  PYTableViewController.m
//  Food
//
//  Created by ko1o on 2019/7/25.
//  Copyright © 2019年 ko1o. All rights reserved.
//

#import "PYTableViewController.h"
#import "MJRefresh.h"
#import "MTPageView.h"

@implementation PYTableCell

- (void)setupUI {
    self.selectionStyle = UITableViewCellSelectionStyleNone;
}

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

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
        [self setupUI];
    }
    return self;
}

@end

@interface PYTableViewController ()

// 是否刷新过
@property (nonatomic, assign) BOOL didViewDidAppear;

@end

@implementation PYTableViewController

- (instancetype)init
{
    if (self = [super init]) {
        self.tableView = [[UITableView alloc] initWithFrame:[UIScreen mainScreen].bounds style:UITableViewStyleGrouped];
        self.tableView.mj_header = [MJRefreshNormalHeader headerWithRefreshingTarget:self refreshingAction:@selector(startRefresh)];
        self.tableView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingTarget:self refreshingAction:@selector(startLoadMore)];
        self.tableView.mj_footer.hidden = YES;
        self.tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
    }
    return self;
}

- (BOOL)zeroContentInset
{
    return NO;
}

- (void)viewDidLayoutSubviews
{
    [super viewDidLayoutSubviews];
    
    self.tableView.frame = self.view.bounds;
    
    [self adjustContetnInset];
}

- (BOOL)mt_shouldSetupStateful
{
    return NO;
}

- (void)adjustContetnInset
{
    if ([self zeroContentInset]) {
        self.tableView.contentInset = UIEdgeInsetsMake(0, 0, self.tableView.mj_footer.height, 0);
    } else {
        CGFloat bottomInset = self.tabBarController.tabBar && self.tabBarController.tabBar.hidden == NO ? self.tabBarController.tabBar.height : homeIndicatorHeight();
        self.tableView.contentInset = UIEdgeInsetsMake(self.navigationController.navigationBar.bottom, 0, bottomInset + self.tableView.mj_footer.height, 0);
    }
}

- (CGFloat)rowHegight {
    return FIX_SIZE(68);
}

- (void)startLoading {
    [super startLoading];
    
    self.itemsM = [NSMutableArray array];
}

- (void)startRefresh
{
    self.itemsM = [NSMutableArray array];
    [self endLoading:nil];
    [self.tableView.mj_footer endRefreshing];
    [self.tableView.mj_footer resetNoMoreData];
}

- (void)startLoadMore
{
    [self.tableView.mj_header endRefreshing];
}

- (BOOL)refreshEnable
{
    return YES;
}

- (BOOL)autoRefreshWhenViewDidLoad
{
    return YES;
}

- (BOOL)mt_nagationBarTransparent {
    return NO;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.tableView.frame = self.view.bounds;
    self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    self.currentPage = 1;
    _tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
    self.tableView.estimatedRowHeight = 0;
    self.tableView.estimatedSectionHeaderHeight = 0;
    self.tableView.estimatedSectionFooterHeight = 0;
    if (@available(iOS 15.0, *)) {
        self.tableView.sectionHeaderTopPadding = 0;
    }
    [self.view addSubview:self.tableView];
    self.tableView.backgroundColor = BG_COLOR;
    
    if (self.autoBeginRefreshWhenViewDidLoad) {
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.25 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            [self.tableView.mj_header beginRefreshing];
        });
    }
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    
    if (![self refreshEnable]) {
        self.tableView.mj_header = nil;
    }
    
    if (![self loadMoreEnable]) {
        self.tableView.mj_footer = nil;
    }
}

- (BOOL)autoBeginRefreshWhenViewDidLoad {
    return YES;
}

- (BOOL)loadMoreEnable
{
    return YES;
}

//overrid 表示内容是否为空，返回若为NO，会显示空页面提醒
- (BOOL)mt_hasContentForStateful
{
    NSInteger rowsCount = [self.tableView.dataSource tableView:self.tableView numberOfRowsInSection:0];
//    self.tableView.hidden = rowsCount == 0;
    
    return rowsCount;
}

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
    return CGFLOAT_MIN;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.itemsM.count;
}

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
    return [UIView new];
}

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
    [self endLoading:nil];
    
    self.tableView.hidden = NO;
    NSInteger rowsCount = [self.tableView.dataSource tableView:self.tableView numberOfRowsInSection:0];
    self.tableView.mj_footer.hidden = rowsCount == 0;
//    if (rowsCount >= self.totalCount && self.tableView.scrollEnabled) {
//        [self.tableView.mj_footer endRefreshingWithNoMoreData];
//    } else {
//        if ([self loadMoreEnable]) {
//            [self.tableView.mj_footer resetNoMoreData];
//        }
//    }
    
    [self.tableView.mj_header endRefreshing];
    [self adjustContetnInset];
    return CGFLOAT_MIN;
}

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
    return [UIView new];
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return [self rowHegight];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    NSString *cellID = NSStringFromClass([self cellClass]);
    PYTableCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
    if (!cell) {
        cell = [[self cellClass] alloc];
        cell = [cell initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
    }
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    cell.model = self.itemsM[indexPath.row];
    return cell;
}

@end