// 代码地址: https://github.com/CoderMJLee/MJRefresh
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// UIScrollView+MJRefresh.m
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// MJRefresh
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//
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// Created by MJ Lee on 15/3/4.
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// Copyright (c) 2015年 小码哥. All rights reserved.
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//
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#import "UIScrollView+MJRefresh.h"
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#import "MJRefreshHeader.h"
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#import "MJRefreshFooter.h"
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#import "MJRefreshTrailer.h"
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#import <objc/runtime.h>
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@implementation UIScrollView (MJRefresh)
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#pragma mark - header
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static const char MJRefreshHeaderKey = '\0';
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- (void)setMj_header:(MJRefreshHeader *)mj_header
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{
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if (mj_header != self.mj_header) {
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// 删除旧的，添加新的
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[self.mj_header removeFromSuperview];
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if (mj_header) {
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[self insertSubview:mj_header atIndex:0];
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}
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// 存储新的
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objc_setAssociatedObject(self, &MJRefreshHeaderKey,
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mj_header, OBJC_ASSOCIATION_RETAIN);
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}
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}
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- (MJRefreshHeader *)mj_header
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{
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return objc_getAssociatedObject(self, &MJRefreshHeaderKey);
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}
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#pragma mark - footer
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static const char MJRefreshFooterKey = '\0';
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- (void)setMj_footer:(MJRefreshFooter *)mj_footer
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{
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if (mj_footer != self.mj_footer) {
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// 删除旧的，添加新的
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[self.mj_footer removeFromSuperview];
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if (mj_footer) {
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[self insertSubview:mj_footer atIndex:0];
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}
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// 存储新的
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objc_setAssociatedObject(self, &MJRefreshFooterKey,
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mj_footer, OBJC_ASSOCIATION_RETAIN);
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}
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}
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- (MJRefreshFooter *)mj_footer
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{
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return objc_getAssociatedObject(self, &MJRefreshFooterKey);
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}
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#pragma mark - footer
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static const char MJRefreshTrailerKey = '\0';
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- (void)setMj_trailer:(MJRefreshTrailer *)mj_trailer {
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if (mj_trailer != self.mj_trailer) {
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// 删除旧的，添加新的
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[self.mj_trailer removeFromSuperview];
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if (mj_trailer) {
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[self insertSubview:mj_trailer atIndex:0];
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}
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// 存储新的
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objc_setAssociatedObject(self, &MJRefreshTrailerKey,
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mj_trailer, OBJC_ASSOCIATION_RETAIN);
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}
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}
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- (MJRefreshTrailer *)mj_trailer {
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return objc_getAssociatedObject(self, &MJRefreshTrailerKey);
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}
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#pragma mark - 过期
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- (void)setFooter:(MJRefreshFooter *)footer
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{
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self.mj_footer = footer;
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}
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- (MJRefreshFooter *)footer
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{
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return self.mj_footer;
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}
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- (void)setHeader:(MJRefreshHeader *)header
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{
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self.mj_header = header;
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}
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- (MJRefreshHeader *)header
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{
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return self.mj_header;
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}
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#pragma mark - other
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- (NSInteger)mj_totalDataCount
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{
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NSInteger totalCount = 0;
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if ([self isKindOfClass:[UITableView class]]) {
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UITableView *tableView = (UITableView *)self;
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for (NSInteger section = 0; section < tableView.numberOfSections; section++) {
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totalCount += [tableView numberOfRowsInSection:section];
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}
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} else if ([self isKindOfClass:[UICollectionView class]]) {
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UICollectionView *collectionView = (UICollectionView *)self;
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for (NSInteger section = 0; section < collectionView.numberOfSections; section++) {
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totalCount += [collectionView numberOfItemsInSection:section];
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}
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}
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return totalCount;
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}
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@end
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