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https://github.com/status-im/react-native.git
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3eeaffce1a
Summary:
Example (index.ios.js):
```
'use strict';
import React from 'react';
import {ListView, RefreshControl, Text, View} from 'react-native';
class BugExample extends React.Component {
render() {
return (
<ListView
style={{backgroundColor: 'red'}}
contentContainerStyle={{backgroundColor: 'green'}}
refreshControl={
<RefreshControl
refreshing={true}
onRefresh={() => {}}
/>
}
dataSource={
new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2}).cloneWithRows(['a', 'b', 'c'])
}
renderRow={(item) => {
return (
<View>
<Text>{item}</Text>
</View>
);
}}
/>
);
}
}
```
RN version: 0.34, 0.35-rc
iOS version (emulator): 9.
Closes https://github.com/facebook/react-native/pull/10321
Differential Revision: D4142774
Pulled By: mmmulani
fbshipit-source-id: 743b865a6e1c1fb09c7cfc48631ad383bd593f89
133 lines
4.0 KiB
Objective-C
133 lines
4.0 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTRefreshControl.h"
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#import "RCTUtils.h"
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@implementation RCTRefreshControl {
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BOOL _isInitialRender;
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BOOL _currentRefreshingState;
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}
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- (instancetype)init
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{
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if ((self = [super init])) {
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[self addTarget:self action:@selector(refreshControlValueChanged) forControlEvents:UIControlEventValueChanged];
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_isInitialRender = true;
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_currentRefreshingState = false;
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}
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return self;
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}
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RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
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- (void)layoutSubviews
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{
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[super layoutSubviews];
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// Fix for bug #7976
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// TODO: Remove when updating to use iOS 10 refreshControl UIScrollView prop.
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if (self.backgroundColor == nil) {
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self.backgroundColor = [UIColor clearColor];
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}
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// If the control is refreshing when mounted we need to call
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// beginRefreshing in layoutSubview or it doesn't work.
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if (_currentRefreshingState && _isInitialRender) {
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[self beginRefreshing];
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}
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_isInitialRender = false;
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}
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- (void)beginRefreshing
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{
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// When using begin refreshing we need to adjust the ScrollView content offset manually.
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UIScrollView *scrollView = (UIScrollView *)self.superview;
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CGPoint offset = {scrollView.contentOffset.x, scrollView.contentOffset.y - self.frame.size.height};
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// `beginRefreshing` must be called after the animation is done. This is why it is impossible
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// to use `setContentOffset` with `animated:YES`.
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[UIView animateWithDuration:0.25
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delay:0
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options:UIViewAnimationOptionBeginFromCurrentState
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animations:^(void) {
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[scrollView setContentOffset:offset];
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} completion:^(__unused BOOL finished) {
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[super beginRefreshing];
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}];
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}
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- (void)endRefreshing
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{
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// The contentOffset of the scrollview MUST be greater than 0 before calling
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// endRefreshing otherwise the next pull to refresh will not work properly.
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UIScrollView *scrollView = (UIScrollView *)self.superview;
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if (scrollView.contentOffset.y < 0) {
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CGPoint offset = {scrollView.contentOffset.x, -scrollView.contentInset.top};
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[UIView animateWithDuration:0.25
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delay:0
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options:UIViewAnimationOptionBeginFromCurrentState
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animations:^(void) {
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[scrollView setContentOffset:offset];
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} completion:^(__unused BOOL finished) {
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[super endRefreshing];
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}];
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} else {
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[super endRefreshing];
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}
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}
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- (NSString *)title
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{
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return self.attributedTitle.string;
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}
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- (void)setTitle:(NSString *)title
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{
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NSRange range = NSMakeRange(0, self.attributedTitle.length);
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NSDictionary *attrs = [self.attributedTitle attributesAtIndex:0 effectiveRange: &range];
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self.attributedTitle = [[NSAttributedString alloc] initWithString:title attributes:attrs];
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}
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- (void)setTitleColor:(UIColor *)color
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{
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NSRange range = NSMakeRange(0, self.attributedTitle.length);
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NSDictionary *attrs = [self.attributedTitle attributesAtIndex:0 effectiveRange: &range];
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NSMutableDictionary *attrsMutable = [attrs mutableCopy];
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[attrsMutable setObject:color forKey:NSForegroundColorAttributeName];
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self.attributedTitle = [[NSAttributedString alloc] initWithString:self.attributedTitle.string attributes:attrsMutable];
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}
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- (void)setRefreshing:(BOOL)refreshing
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{
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if (_currentRefreshingState != refreshing) {
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_currentRefreshingState = refreshing;
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if (refreshing) {
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if (!_isInitialRender) {
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[self beginRefreshing];
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}
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} else {
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[self endRefreshing];
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}
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}
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}
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- (void)refreshControlValueChanged
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{
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_currentRefreshingState = super.refreshing;
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if (_onRefresh) {
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_onRefresh(nil);
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}
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}
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@end
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