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102 lines
3.6 KiB
Plaintext
102 lines
3.6 KiB
Plaintext
/*!
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* iOS SDK
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*
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* Tencent is pleased to support the open source community by making
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* Hippy available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company.
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* All rights reserved.
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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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#import "HippyRefreshWrapper.h"
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#import "UIView+Hippy.h"
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#import "HippyRefreshWrapperItemView.h"
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#import "HippyScrollableProtocol.h"
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@interface HippyRefreshWrapper () <UIScrollViewDelegate>
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@property (nonatomic, weak) HippyRefreshWrapperItemView *wrapperItemView;
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@property (nonatomic, weak) id<HippyScrollableProtocol> scrollableView;
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@property (nonatomic, copy) HippyDirectEventBlock onRefresh;
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@property (nonatomic, assign) CGFloat bounceTime;
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@property (nonatomic, weak) HippyBridge *bridge;
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@end
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@implementation HippyRefreshWrapper
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- (void)addSubview:(UIView *)view {
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if (view != _wrapperItemView) {
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[super addSubview:view];
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}
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[self refactorViews];
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}
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- (void)refactorViews {
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if (_wrapperItemView && _scrollableView) {
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CGSize size = _wrapperItemView.frame.size;
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_wrapperItemView.frame = CGRectMake(0, -size.height, size.width, size.height);
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[_scrollableView.realScrollView addSubview:_wrapperItemView];
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}
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}
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- (void)refreshCompleted {
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CGFloat duration = _bounceTime != 0 ? _bounceTime : 400;
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UIEdgeInsets contentInset = self->_scrollableView.realScrollView.contentInset;
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contentInset.top = 0;
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[UIView animateWithDuration:duration / 1000.f animations:^{
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[self->_scrollableView.realScrollView setContentInset:contentInset];
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}];
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}
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- (void)startRefresh {
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CGFloat wrapperItemViewHeight = _wrapperItemView.frame.size.height;
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UIEdgeInsets insets = _scrollableView.realScrollView.contentInset;
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insets.top = wrapperItemViewHeight;
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CGFloat duration = _bounceTime != 0 ? _bounceTime : 400;
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[UIView animateWithDuration:duration / 1000.f animations:^{
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[self->_scrollableView.realScrollView setContentInset:insets];
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[self->_scrollableView.realScrollView setContentOffset:CGPointMake(0, -insets.top)];
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}];
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//TODO 下拉刷新依赖这个
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if (_onRefresh) {
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_onRefresh(@{});
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}
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}
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- (void)insertHippySubview:(UIView *)view atIndex:(NSInteger)index {
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if ([view isKindOfClass:[HippyRefreshWrapperItemView class]]) {
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_wrapperItemView = (HippyRefreshWrapperItemView *)view;
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} else if ([view conformsToProtocol:@protocol(HippyScrollableProtocol)]) {
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_scrollableView = (id<HippyScrollableProtocol>)view;
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[_scrollableView addScrollListener:self];
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}
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[super insertHippySubview:view atIndex:index];
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}
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- (void)invalidate {
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[_scrollableView removeScrollListener:self];
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}
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- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
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CGFloat wrapperItemViewHeight = _wrapperItemView.frame.size.height;
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UIEdgeInsets insets = scrollView.contentInset;
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CGFloat contentOffsetY = scrollView.contentOffset.y;
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if (contentOffsetY <= -wrapperItemViewHeight && insets.top != wrapperItemViewHeight) {
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insets.top = wrapperItemViewHeight;
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scrollView.contentInset = insets;
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if (_onRefresh) {
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_onRefresh(@{});
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}
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}
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}
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@end
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