session-ios/Signal/src/ViewControllers/HomeView/HomeViewCell.m
2018-04-11 09:34:37 -04:00

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//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
#import "HomeViewCell.h"
#import "OWSAvatarBuilder.h"
#import "Signal-Swift.h"
#import <SignalMessaging/OWSFormat.h>
#import <SignalMessaging/OWSUserProfile.h>
#import <SignalServiceKit/OWSMessageManager.h>
#import <SignalServiceKit/TSContactThread.h>
#import <SignalServiceKit/TSGroupThread.h>
#import <SignalServiceKit/TSThread.h>
NS_ASSUME_NONNULL_BEGIN
const NSUInteger kHomeViewCellHeight = 72;
const NSUInteger kHomeViewCellHMargin = 16;
const NSUInteger kHomeViewCellVMargin = 12;
const NSUInteger kHomeViewAvatarSize = kHomeViewCellHeight - kHomeViewCellVMargin * 2;
const NSUInteger kHomeViewAvatarHSpacing = 12;
@interface HomeViewCell ()
@property (nonatomic) AvatarImageView *avatarView;
@property (nonatomic) UIView *payloadView;
@property (nonatomic) UILabel *nameLabel;
@property (nonatomic) UILabel *snippetLabel;
@property (nonatomic) UILabel *timeLabel;
@property (nonatomic) UIView *unreadBadge;
@property (nonatomic) UILabel *unreadLabel;
@property (nonatomic) TSThread *thread;
@property (nonatomic) OWSContactsManager *contactsManager;
@property (nonatomic, readonly) NSMutableArray<NSLayoutConstraint *> *viewConstraints;
@end
#pragma mark -
@implementation HomeViewCell
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(nullable NSString *)reuseIdentifier
{
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
[self commontInit];
}
return self;
}
// `[UIView init]` invokes `[self initWithFrame:...]`.
- (instancetype)initWithFrame:(CGRect)frame
{
if (self = [super initWithFrame:frame]) {
[self commontInit];
}
return self;
}
- (void)commontInit
{
OWSAssert(!self.avatarView);
[self setTranslatesAutoresizingMaskIntoConstraints:NO];
self.layoutMargins = UIEdgeInsetsZero;
self.contentView.layoutMargins = UIEdgeInsetsZero;
self.preservesSuperviewLayoutMargins = NO;
self.contentView.preservesSuperviewLayoutMargins = NO;
self.backgroundColor = [UIColor whiteColor];
_viewConstraints = [NSMutableArray new];
self.avatarView = [[AvatarImageView alloc] init];
[self.contentView addSubview:self.avatarView];
[self.avatarView autoSetDimension:ALDimensionWidth toSize:kHomeViewAvatarSize];
[self.avatarView autoSetDimension:ALDimensionHeight toSize:kHomeViewAvatarSize];
[self.avatarView autoPinLeadingToSuperviewMarginWithInset:kHomeViewCellHMargin];
[self.avatarView autoVCenterInSuperview];
[self.avatarView setContentHuggingHigh];
[self.avatarView setCompressionResistanceHigh];
self.payloadView = [UIView containerView];
[self.contentView addSubview:self.payloadView];
[self.payloadView autoPinLeadingToTrailingEdgeOfView:self.avatarView offset:kHomeViewAvatarHSpacing];
[self.payloadView autoVCenterInSuperview];
self.nameLabel = [UILabel new];
self.nameLabel.lineBreakMode = NSLineBreakByTruncatingTail;
self.nameLabel.font = self.nameFont;
[self.nameLabel setContentHuggingHorizontalLow];
[self.nameLabel setCompressionResistanceHorizontalLow];
self.timeLabel = [UILabel new];
[self.timeLabel setContentHuggingHorizontalHigh];
[self.timeLabel setCompressionResistanceHorizontalHigh];
UIStackView *topRowView = [[UIStackView alloc] initWithArrangedSubviews:@[
self.nameLabel,
self.timeLabel,
]];
topRowView.axis = UILayoutConstraintAxisHorizontal;
topRowView.spacing = 4;
[self.payloadView addSubview:topRowView];
[topRowView autoPinLeadingToSuperviewMargin];
[topRowView autoPinTrailingToSuperviewMargin];
[topRowView autoPinTopToSuperviewMargin];
self.snippetLabel = [UILabel new];
self.snippetLabel.font = [self snippetFont];
self.snippetLabel.numberOfLines = 1;
self.snippetLabel.lineBreakMode = NSLineBreakByTruncatingTail;
[self.payloadView addSubview:self.snippetLabel];
[self.snippetLabel autoPinLeadingToSuperviewMargin];
[self.snippetLabel autoPinTrailingToSuperviewMargin];
[self.snippetLabel autoPinBottomToSuperviewMargin];
[self.snippetLabel autoPinEdge:ALEdgeTop toEdge:ALEdgeBottom ofView:topRowView withOffset:5.f];
[self.snippetLabel setContentHuggingHorizontalLow];
[self.snippetLabel setCompressionResistanceHorizontalLow];
self.unreadLabel = [UILabel new];
self.unreadLabel.font = [UIFont ows_dynamicTypeCaption1Font];
self.unreadLabel.textColor = [UIColor whiteColor];
self.unreadLabel.lineBreakMode = NSLineBreakByTruncatingTail;
self.unreadLabel.textAlignment = NSTextAlignmentCenter;
self.unreadBadge = [NeverClearView new];
self.unreadBadge.backgroundColor = [UIColor ows_materialBlueColor];
[self.contentView addSubview:self.unreadBadge];
[self.unreadBadge autoPinTrailingToSuperviewMarginWithInset:kHomeViewCellHMargin];
[self.unreadBadge autoAlignAxis:ALAxisHorizontal toSameAxisOfView:self.timeLabel];
[self.unreadBadge setContentHuggingHigh];
[self.unreadBadge setCompressionResistanceHigh];
// TODO: Will this localize? It assumes that the worst case
// unread count (99) will fit horizontally into some multiple
// N of the font's line height.
const int unreadBadgeSize = (int)ceil(self.unreadLabel.font.lineHeight * 1.5f);
self.unreadBadge.layer.cornerRadius = unreadBadgeSize / 2;
[self.unreadBadge autoSetDimension:ALDimensionWidth toSize:unreadBadgeSize];
[self.unreadBadge autoSetDimension:ALDimensionHeight toSize:unreadBadgeSize];
[self.unreadBadge addSubview:self.unreadLabel];
[self.unreadLabel autoVCenterInSuperview];
[self.unreadLabel autoPinWidthToSuperview];
}
+ (NSString *)cellReuseIdentifier
{
return NSStringFromClass([self class]);
}
+ (CGFloat)rowHeight
{
return kHomeViewCellHeight;
}
- (void)initializeLayout
{
self.selectionStyle = UITableViewCellSelectionStyleDefault;
}
- (nullable NSString *)reuseIdentifier
{
return NSStringFromClass(self.class);
}
- (void)configureWithThread:(TSThread *)thread
contactsManager:(OWSContactsManager *)contactsManager
blockedPhoneNumberSet:(NSSet<NSString *> *)blockedPhoneNumberSet
shouldHaveBottomSeparator:(BOOL)shouldHaveBottomSeparator
{
OWSAssertIsOnMainThread();
OWSAssert(thread);
OWSAssert(contactsManager);
OWSAssert(blockedPhoneNumberSet);
// TODO: Honor shouldHaveBottomSeparator.
self.thread = thread;
self.contactsManager = contactsManager;
BOOL hasUnreadMessages = thread.hasUnreadMessages;
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(otherUsersProfileDidChange:)
name:kNSNotificationName_OtherUsersProfileDidChange
object:nil];
[self updateNameLabel];
[self updateAvatarView];
self.snippetLabel.attributedText =
[self attributedSnippetForThread:thread blockedPhoneNumberSet:blockedPhoneNumberSet];
self.timeLabel.attributedText = [self attributedStringForDate:thread.lastMessageDate];
self.separatorInset
= UIEdgeInsetsMake(0, kHomeViewAvatarSize + kHomeViewCellHMargin + kHomeViewAvatarHSpacing, 0, 0);
self.timeLabel.textColor = hasUnreadMessages ? [UIColor ows_materialBlueColor] : [UIColor ows_darkGrayColor];
NSUInteger unreadCount = [[OWSMessageUtils sharedManager] unreadMessagesInThread:thread];
if (unreadCount > 0) {
self.unreadBadge.hidden = NO;
self.unreadLabel.text = [OWSFormat formatInt:MIN(99, (int)unreadCount)];
[self.viewConstraints addObjectsFromArray:@[
[self.unreadBadge autoPinLeadingToTrailingEdgeOfView:self.payloadView offset:4.f],
]];
} else {
self.unreadBadge.hidden = YES;
[self.viewConstraints addObjectsFromArray:@[
[self.payloadView autoPinTrailingToSuperviewMarginWithInset:kHomeViewCellHMargin],
]];
}
}
- (void)updateAvatarView
{
OWSContactsManager *contactsManager = self.contactsManager;
if (contactsManager == nil) {
OWSFail(@"%@ contactsManager should not be nil", self.logTag);
self.avatarView.image = nil;
return;
}
TSThread *thread = self.thread;
if (thread == nil) {
OWSFail(@"%@ thread should not be nil", self.logTag);
self.avatarView.image = nil;
return;
}
self.avatarView.image =
[OWSAvatarBuilder buildImageForThread:thread diameter:kHomeViewAvatarSize contactsManager:contactsManager];
}
- (NSAttributedString *)attributedSnippetForThread:(TSThread *)thread
blockedPhoneNumberSet:(NSSet<NSString *> *)blockedPhoneNumberSet
{
OWSAssert(thread);
BOOL isBlocked = NO;
if (!thread.isGroupThread) {
NSString *contactIdentifier = thread.contactIdentifier;
isBlocked = [blockedPhoneNumberSet containsObject:contactIdentifier];
}
BOOL hasUnreadMessages = thread.hasUnreadMessages;
NSMutableAttributedString *snippetText = [NSMutableAttributedString new];
if (isBlocked) {
// If thread is blocked, don't show a snippet or mute status.
[snippetText
appendAttributedString:[[NSAttributedString alloc]
initWithString:NSLocalizedString(@"HOME_VIEW_BLOCKED_CONTACT_CONVERSATION",
@"A label for conversations with blocked users.")
attributes:@{
NSFontAttributeName : self.snippetFont.ows_medium,
NSForegroundColorAttributeName : [UIColor ows_blackColor],
}]];
} else {
if ([thread isMuted]) {
[snippetText appendAttributedString:[[NSAttributedString alloc]
initWithString:@"\ue067 "
attributes:@{
NSFontAttributeName : [UIFont ows_elegantIconsFont:9.f],
NSForegroundColorAttributeName : (hasUnreadMessages
? [UIColor colorWithWhite:0.1f alpha:1.f]
: [UIColor lightGrayColor]),
}]];
}
NSString *displayableText = thread.lastMessageLabel.filterStringForDisplay;
if (displayableText) {
[snippetText appendAttributedString:[[NSAttributedString alloc]
initWithString:displayableText
attributes:@{
NSFontAttributeName :
(hasUnreadMessages ? self.snippetFont.ows_medium
: self.snippetFont),
NSForegroundColorAttributeName :
(hasUnreadMessages ? [UIColor ows_blackColor]
: [UIColor lightGrayColor]),
}]];
}
}
return snippetText;
}
#pragma mark - Date formatting
- (NSAttributedString *)attributedStringForDate:(nullable NSDate *)date
{
if (date == nil) {
OWSProdLogAndFail(@"%@ date was unexpectedly nil", self.logTag);
return [NSAttributedString new];
}
NSDateFormatter *formatter = ([DateUtil dateIsToday:date] ? [DateUtil timeFormatter] : [DateUtil dateFormatter]);
NSString *timeString = [formatter stringFromDate:date];
OWSAssert(timeString);
return [[NSAttributedString alloc] initWithString:timeString
attributes:@{
NSForegroundColorAttributeName : [UIColor ows_darkGrayColor],
NSFontAttributeName : self.dateTimeFont,
}];
}
#pragma mark - Constants
- (UIFont *)dateTimeFont
{
return [UIFont ows_dynamicTypeFootnoteFont];
}
- (UIFont *)snippetFont
{
return [UIFont ows_dynamicTypeBodyFont];
}
- (UIFont *)nameFont
{
return [UIFont ows_dynamicTypeBodyFont].ows_medium;
}
// Used for profile names.
- (UIFont *)nameSecondaryFont
{
return [UIFont ows_dynamicTypeFootnoteFont];
}
#pragma mark - Reuse
- (void)prepareForReuse
{
[super prepareForReuse];
[NSLayoutConstraint deactivateConstraints:self.viewConstraints];
[self.viewConstraints removeAllObjects];
self.thread = nil;
self.contactsManager = nil;
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
#pragma mark - Name
- (void)otherUsersProfileDidChange:(NSNotification *)notification
{
OWSAssertIsOnMainThread();
NSString *recipientId = notification.userInfo[kNSNotificationKey_ProfileRecipientId];
if (recipientId.length == 0) {
return;
}
if (![self.thread isKindOfClass:[TSContactThread class]]) {
return;
}
if (![self.thread.contactIdentifier isEqualToString:recipientId]) {
return;
}
[self updateNameLabel];
[self updateAvatarView];
}
- (void)updateNameLabel
{
OWSAssertIsOnMainThread();
TSThread *thread = self.thread;
if (thread == nil) {
OWSFail(@"%@ thread should not be nil", self.logTag);
self.nameLabel.attributedText = nil;
return;
}
OWSContactsManager *contactsManager = self.contactsManager;
if (contactsManager == nil) {
OWSFail(@"%@ contacts manager should not be nil", self.logTag);
self.nameLabel.attributedText = nil;
return;
}
NSAttributedString *name;
if (thread.isGroupThread) {
if (thread.name.length == 0) {
name = [[NSAttributedString alloc] initWithString:[MessageStrings newGroupDefaultTitle]];
} else {
name = [[NSAttributedString alloc] initWithString:thread.name];
}
} else {
name = [contactsManager attributedStringForConversationTitleWithPhoneIdentifier:thread.contactIdentifier
primaryFont:self.nameFont
secondaryFont:self.nameSecondaryFont];
}
self.nameLabel.attributedText = name;
}
@end
NS_ASSUME_NONNULL_END