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Doric/doric-iOS/Pod/Classes/Refresh/DoricSwipeRefreshLayout.m
2020-04-08 20:33:20 +08:00

131 lines
3.5 KiB
Objective-C

/*
* Copyright [2019] [Doric.Pub]
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//
// Created by pengfei.zhou on 2019/11/26.
//
#import "DoricSwipeRefreshLayout.h"
#import "UIView+Doric.h"
#import "DoricLayouts.h"
@interface DoricSwipeRefreshLayout () <UIScrollViewDelegate>
@end
@implementation DoricSwipeRefreshLayout
- (instancetype)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
self.showsHorizontalScrollIndicator = NO;
self.showsVerticalScrollIndicator = NO;
self.alwaysBounceVertical = YES;
self.delegate = self;
if (@available(iOS 11, *)) {
self.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}
}
return self;
}
- (instancetype)init {
if (self = [super init]) {
self.showsHorizontalScrollIndicator = NO;
self.showsVerticalScrollIndicator = NO;
self.alwaysBounceVertical = YES;
self.delegate = self;
if (@available(iOS 11, *)) {
self.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}
}
return self;
}
- (CGSize)sizeThatFits:(CGSize)size {
if (self.contentView) {
return self.contentView.frame.size;
}
return CGSizeZero;
}
- (void)setContentView:(UIView *)contentView {
if (_contentView) {
[_contentView removeFromSuperview];
}
_contentView = contentView;
[self addSubview:contentView];
}
- (void)setHeaderView:(UIView *)headerView {
if (_headerView) {
[_headerView removeFromSuperview];
}
_headerView = headerView;
[self addSubview:headerView];
self.refreshable = YES;
}
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
if (-scrollView.contentOffset.y >= self.headerView.height) {
dispatch_async(dispatch_get_main_queue(), ^{
self.refreshing = YES;
});
}
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
if (scrollView.contentOffset.y <= 0) {
[self.swipePullingDelegate setPullingDistance:-scrollView.contentOffset.y];
}
}
- (void)setContentOffset:(CGPoint)contentOffset {
[super setContentOffset:contentOffset];
}
- (void)setRefreshing:(BOOL)refreshing {
if (_refreshing == refreshing) {
return;
}
if (refreshing) {
[self setContentOffset:CGPointMake(0, -self.headerView.height) animated:YES];
self.scrollEnabled = NO;
if (self.onRefreshBlock) {
self.onRefreshBlock();
}
} else {
[self setContentOffset:(CGPoint) {0, 0} animated:YES];
self.scrollEnabled = YES;
}
_refreshing = refreshing;
}
- (void)setRefreshable:(BOOL)refreshable {
self.scrollEnabled = refreshable;
if (refreshable) {
self.contentOffset = (CGPoint) {0, 0};
self.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
}
}
- (BOOL)refreshable {
return self.scrollEnabled;
}
- (void)setContentSize:(CGSize)contentSize {
[super setContentSize:contentSize];
}
@end