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