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//
// MasterViewController.m
// Juick
//
// Created by Vitaly Takmazov on 26.10.13.
// Copyright (c) 2013 com.juick. All rights reserved.
//
#import "MasterViewController.h"
#import "MessageCell.h"
#import "Message.h"
static NSString *CellIdentifier = @"MessageCell";
@interface MasterViewController ();
@property(nonatomic, strong) NSMutableArray *messages;
@property(nonatomic, assign) Boolean dataLoading;
@end
@implementation MasterViewController
- (void) refreshData:(UIRefreshControl *)refresh {
[self.messages removeAllObjects];
[self.tableView reloadData];
NSURL *url = [NSURL URLWithString:@"https://api.juick.com/messages"];
NSArray *next = [Message pullNextFromURL:url];
int64_t delayInSeconds = 2.0;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
[self.tableView beginUpdates];
CGPoint offset = self.tableView.contentOffset;
for (int i = 0; i < [next count]; i++) {
[self.messages addObject:[next objectAtIndex:i]];
[self.tableView insertRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:self.messages.count-1 inSection:0]] withRowAnimation:UITableViewRowAnimationNone];
}
[self.tableView setContentOffset:offset animated:NO];
[self.tableView endUpdates];
[refresh endRefreshing];
});
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
CGPoint pos = scrollView.contentOffset;
CGFloat contentHeight = scrollView.contentSize.height - scrollView.contentSize.height / 3;
if (pos.y >= contentHeight && !self.dataLoading) {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{
self.dataLoading = YES;
Message * lastMessage = [self.messages lastObject];
NSArray *next = [Message pullNextFromURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://api.juick.com/messages?before_mid=%@", lastMessage.MID]]];
int64_t delayInSeconds = 2.0;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
[self.tableView beginUpdates];
for (int i = 0; i < [next count]; i++) {
[self.messages addObject:[next objectAtIndex:i]];
[self.tableView insertRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:self.messages.count-1 inSection:0]] withRowAnimation:UITableViewRowAnimationNone];
}
[self.tableView setContentOffset:pos animated:NO];
[self.tableView endUpdates];
self.dataLoading = NO;
});
});
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.dataLoading = NO;
self.title = @"Messages";
self.messages = [NSMutableArray array];
UIRefreshControl *refresh = [[UIRefreshControl alloc] init];
[refresh addTarget:self action:@selector(refreshData:) forControlEvents:UIControlEventValueChanged];
self.refreshControl = refresh;
//UINib *cellNib = [UINib nibWithNibName:@"MessageCell" bundle:nil];
//[self.tableView registerNib:cellNib forCellReuseIdentifier:@"MessageCell"];
[self.tableView registerClass:[MessageCell class] forCellReuseIdentifier:CellIdentifier];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(contentSizeCategoryChanged:)
name:UIContentSizeCategoryDidChangeNotification
object:nil];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIContentSizeCategoryDidChangeNotification
object:nil];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)contentSizeCategoryChanged:(NSNotification *)notification
{
[self.tableView reloadData];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return _messages.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
[cell updateFonts];
Message *msg = [_messages objectAtIndex:indexPath.row];
cell.titleLabel.text = msg.user;
cell.bodyLabel.text = msg.text;
[cell setNeedsUpdateConstraints];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
[cell updateFonts];
Message *msg = [_messages objectAtIndex:indexPath.row];
cell.titleLabel.text = msg.user;
cell.bodyLabel.text = msg.text;
cell.bodyLabel.preferredMaxLayoutWidth = tableView.bounds.size.width - (kLabelHorizontalInsets * 2.0f);
[cell setNeedsUpdateConstraints];
[cell updateConstraintsIfNeeded];
[cell.contentView setNeedsLayout];
[cell.contentView layoutIfNeeded];
CGFloat height = [cell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height;
return height;
}
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 100.0f;
}
@end
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