This app provides monitoring and information features for the common freifunk user and the technical stuff of a freifunk community.
Code base is taken from a TUM Practical Course project and added here to see if Freifunk Altdorf can use it.
https://www.freifunk-altdorf.de
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145 lines
3.8 KiB
145 lines
3.8 KiB
/** |
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* Copyright (c) 2015-present, Facebook, Inc. |
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* |
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* This source code is licensed under the MIT license found in the |
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* LICENSE file in the root directory of this source tree. |
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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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BOOL _refreshingProgrammatically; |
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NSString *_title; |
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UIColor *_titleColor; |
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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 beginRefreshingProgrammatically]; |
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} |
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_isInitialRender = false; |
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} |
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- (void)beginRefreshingProgrammatically |
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{ |
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_refreshingProgrammatically = YES; |
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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)endRefreshingProgrammatically |
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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 (_refreshingProgrammatically && scrollView.contentOffset.y < 0) { |
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CGPoint offset = {scrollView.contentOffset.x, 0}; |
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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 _title; |
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} |
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- (void)setTitle:(NSString *)title |
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{ |
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_title = title; |
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[self _updateTitle]; |
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} |
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- (void)setTitleColor:(UIColor *)color |
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{ |
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_titleColor = color; |
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[self _updateTitle]; |
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} |
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- (void)_updateTitle |
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{ |
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if (!_title) { |
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return; |
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} |
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NSMutableDictionary *attributes = [NSMutableDictionary dictionary]; |
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if (_titleColor) { |
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attributes[NSForegroundColorAttributeName] = _titleColor; |
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} |
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self.attributedTitle = [[NSAttributedString alloc] initWithString:_title attributes:attributes]; |
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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 beginRefreshingProgrammatically]; |
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} |
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} else { |
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[self endRefreshingProgrammatically]; |
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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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_refreshingProgrammatically = NO; |
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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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