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//
// IBTRefreshTableView.m
// XFFruit
//
// Created by Xummer on 4/11/15.
// Copyright (c) 2015 Xummer. All rights reserved.
//
#import "IBTRefreshTableView.h"
@interface IBTRefreshTableView ()
{
BOOL _loading;
}
@property (strong, nonatomic) UIView *refreshFooterView;
@property (assign) BOOL footerAnimating;
@end
@implementation IBTRefreshTableView
#pragma mark - Life Cycle
- (id)initWithFrame:(CGRect)frame style:(UITableViewStyle)style {
self = [super initWithFrame:frame style:style];
if (self) {
}
return self;
}
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
}
return self;
}
- (void)awakeFromNib {
[super awakeFromNib];
}
- (void)layoutSubviews {
[super layoutSubviews];
if (_refreshFooterView) {
CGRect frame = _refreshFooterView.frame;
frame.origin.y = self.contentSize.height;
_refreshFooterView.frame = frame;
}
}
- (void)didMoveToWindow {
[super didMoveToWindow];
if (!self.window) {
if (_refreshControl) {
[_refreshControl endRefreshing];
}
if (_refreshFooterView) {
[_loadMoreView updateState:kLoadStateNormal];
}
}
}
#pragma mark - Setter
- (void)setRefreshFooterView:(UIView *)refreshFooterView {
if (_refreshFooterView != refreshFooterView) {
[_refreshFooterView removeFromSuperview];
_refreshFooterView = refreshFooterView;
[self addSubview:refreshFooterView];
[self setNeedsLayout];
}
}
#pragma mark - Over Write
- (void)reloadData {
[super reloadData];
CGRect bounds = self.bounds;
CGSize size = self.contentSize;
UIEdgeInsets inset = self.contentInset;
if (size.height < bounds.size.height - inset.bottom ||
[self.dataSource tableView:self numberOfRowsInSection:0] == 0) {
self.refreshFooterView = nil;
}
else {
self.refreshFooterView = _loadMoreView;
}
}
- (void)scrollToTopAnimated:(BOOL)animated {
[self setContentOffset:CGPointZero animated:animated];
}
- (void)scrollToBottomAnimated:(BOOL)animated {
// CGFloat vh = [self getVisibleHeight];
//
// [self setContentOffset:CGPointMake(0, self.contentSize.height - vh) animated:animated];
NSInteger lastSection = [super numberOfSections];
if (lastSection > 0) {
lastSection -= 1;
}
else {
return;
}
NSInteger lastRow = [super numberOfRowsInSection:lastSection];
if (lastRow > 0) {
lastRow -= 1;
}
else {
return;
}
NSIndexPath *indexP = [NSIndexPath indexPathForRow:lastRow inSection:lastSection];
[super scrollToRowAtIndexPath:indexP
atScrollPosition:UITableViewScrollPositionBottom
animated:animated];
}
- (void)addRefreshControlWithText:(NSString *)text {
if (!_refreshControl) {
self.refreshControl = [[UIRefreshControl alloc] init];
[_refreshControl addTarget:self
action:@selector(handleRefresh:)
forControlEvents:UIControlEventValueChanged];
}
if (text.length > 0) {
_refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:text];
}
if (!_refreshControl.superview) {
[self addSubview:_refreshControl];
}
}
- (void)removeRefreshControl {
if (_refreshControl && _refreshControl.superview) {
[_refreshControl removeFromSuperview];
}
}
- (void)handleRefresh:(id)sender {
// UIRefreshControl *refreshControl = (UIRefreshControl *)sender;
if ([_refreshDelegate respondsToSelector:@selector(startRefreshData:)]) {
// Do networking in |startRefreshData:|
[_refreshDelegate startRefreshData:self];
}
}
- (void)endRefresh:(id)sender {
if ([_refreshDelegate respondsToSelector:@selector(endRefreshData:)]) {
[_refreshDelegate endRefreshData:self];
}
[self endRefreshWithState:kRefreshStateFailed];
}
- (void)endRefreshWithState:(RefreshState)state {
// NSString *textStr;
// switch (state) {
// case kLoadStateFinished:
// textStr = @"刷新成功";
// break;
// case kLoadStateFailed:
// textStr = @"刷新失败";
// break;
// case kRefreshStateTimeOut
// textStr = @"连接超时";
// break;
// default:
// break;
// }
//
// if (textStr.length > 0) {
// _refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:textStr];
// }
if (_refreshControl.refreshing) {
[_refreshControl endRefreshing];
// Fix ContentInset became -60 when UIRefreshController endRefreshing
// http://stackoverflow.com/questions/20101572/ios7-uirefreshcontrol-changes-contentinset
if (self.contentInset.top < 0) {
UIEdgeInsets inset = self.contentInset;
inset.top = 0;
self.contentInset = inset;
}
}
}
- (void)addLoadMoreFootWithText:(NSString *)text {
if (!_loadMoreView) {
CGRect frame = (CGRect){
.origin.x = 0,
.origin.y = 0,
.size.width = CGRectGetWidth(self.bounds),
.size.height = 44
};
self.loadMoreView = [[IBTScrollLoadMoreView alloc] initWithFrame:frame];
_loadMoreView.textColor = [UIColor grayColor];
_loadMoreView.loadMoreText = text;
}
self.refreshFooterView = _loadMoreView;
[_loadMoreView updateState:kLoadStateNormal];
}
- (void)removeLoadMoreFoot {
if (self.refreshFooterView == _loadMoreView) {
self.refreshFooterView = nil;
}
}
- (void)endLoadMoreWithState:(LoadMoreState)state {
if (self.refreshFooterView) {
[_loadMoreView updateState:state];
_loading = NO;
if ([_refreshDelegate respondsToSelector:@selector(endLoadMoreData:)]) {
[_refreshDelegate endLoadMoreData:self];
}
[self hideLoadMoreView];
}
}
- (void)resetLoadMoreFoot {
[self endLoadMoreWithState:kLoadStateNormal];
}
- (void)endLoadWithFailed {
[self endLoadMoreWithState:kLoadStateFailed];
}
- (void)hideLoadMoreView {
if (UIEdgeInsetsEqualToEdgeInsets(self.contentInset, UIEdgeInsetsZero)) {
return;
}
if (_footerAnimating) {
[self performSelector:@selector(hideLoadMoreView) withObject:nil afterDelay:.2f];
return;
}
_footerAnimating = YES;
[UIView animateWithDuration:.2f
animations:^{
self.contentInset = UIEdgeInsetsZero;
}
completion:^(BOOL finished) {
_footerAnimating = NO;
}];
}
- (void)showLoadMoreView {
UIEdgeInsets insets = UIEdgeInsetsMake(0, 0, CGRectGetHeight(_loadMoreView.frame), 0);
if (UIEdgeInsetsEqualToEdgeInsets(self.contentInset, insets)) {
return;
}
if (_footerAnimating) {
[self performSelector:@selector(showLoadMoreView) withObject:nil afterDelay:.2f];
return;
}
_footerAnimating = YES;
[UIView animateWithDuration:.2f
animations:^{
self.contentInset = insets;
}
completion:^(BOOL finished) {
_footerAnimating = NO;
}];
}
- (void)tableViewDidScroll:(UIScrollView *)scrollView {
if (!_refreshFooterView) {
return;
}
if (_loadMoreView.currentState == kLoadStateLoading) {
CGFloat offsetH = CGRectGetHeight(_loadMoreView.frame);
scrollView.contentInset = UIEdgeInsetsMake(0, 0, offsetH, 0);
}
else if (scrollView.isDragging) {
CGFloat maxOffsetY = scrollView.contentSize.height - CGRectGetHeight(scrollView.frame);
// NSLog(@" %f - %f", scrollView.contentOffset.y, maxOffsetY );
if (_loadMoreView.currentState == kLoadStateDraging &&
scrollView.contentOffset.y > maxOffsetY &&
scrollView.contentOffset.y < maxOffsetY + CGRectGetHeight(_loadMoreView.frame) &&
!_loading)
{
[_loadMoreView updateState:kLoadStateNormal];
}
else if ((_loadMoreView.currentState == kLoadStateNormal ||
_loadMoreView.currentState >= kLoadStateFinished) &&
scrollView.contentOffset.y > maxOffsetY + CGRectGetHeight(_loadMoreView.frame) &&
!_loading)
{
[_loadMoreView updateState:kLoadStateDraging];
}
if (scrollView.contentInset.bottom != 0) {
scrollView.contentInset = UIEdgeInsetsZero;
}
}
}
- (void)tableviewDidEndDragging:(UIScrollView *)scrollView {
CGFloat maxOffsetY = scrollView.contentSize.height - CGRectGetHeight(scrollView.frame);
if (scrollView.contentOffset.y >= maxOffsetY + CGRectGetHeight(_loadMoreView.frame) &&
!_loading) {
_loading = YES;
[_loadMoreView updateState:kLoadStateLoading];
[self showLoadMoreView];
if ([_refreshDelegate respondsToSelector:@selector(startLoadMoreData:)]) {
[_refreshDelegate startLoadMoreData:self];
}
}
}
@end