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session-ios/Signal/src/ViewControllers/UpdateGroupViewController.m

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//
// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//
#import "UpdateGroupViewController.h"
#import "AddToGroupViewController.h"
#import "AvatarViewHelper.h"
#import "BlockListUIUtils.h"
#import "ContactTableViewCell.h"
#import "ContactsViewHelper.h"
#import "Environment.h"
#import "NSString+OWS.h"
#import "OWSContactsManager.h"
#import "OWSNavigationController.h"
#import "OWSTableViewController.h"
#import "Signal-Swift.h"
#import "SignalKeyingStorage.h"
#import "TSOutgoingMessage.h"
#import "UIUtil.h"
#import "UIView+OWS.h"
#import "UIViewController+OWS.h"
#import "ViewControllerUtils.h"
#import <SignalServiceKit/NSDate+OWS.h>
#import <SignalServiceKit/OWSMessageSender.h>
#import <SignalServiceKit/SecurityUtils.h>
#import <SignalServiceKit/SignalAccount.h>
#import <SignalServiceKit/TSGroupModel.h>
#import <SignalServiceKit/TSGroupThread.h>
NS_ASSUME_NONNULL_BEGIN
@interface UpdateGroupViewController () <UIImagePickerControllerDelegate,
UITextFieldDelegate,
ContactsViewHelperDelegate,
AvatarViewHelperDelegate,
AddToGroupViewControllerDelegate,
OWSTableViewControllerDelegate,
UINavigationControllerDelegate,
OWSNavigationView>
@property (nonatomic, readonly) OWSMessageSender *messageSender;
@property (nonatomic, readonly) ContactsViewHelper *contactsViewHelper;
@property (nonatomic, readonly) AvatarViewHelper *avatarViewHelper;
@property (nonatomic, readonly) OWSTableViewController *tableViewController;
@property (nonatomic, readonly) AvatarImageView *avatarView;
@property (nonatomic, readonly) UITextField *groupNameTextField;
@property (nonatomic, nullable) UIImage *groupAvatar;
@property (nonatomic, nullable) NSSet<NSString *> *previousMemberRecipientIds;
@property (nonatomic) NSMutableSet<NSString *> *memberRecipientIds;
@property (nonatomic) BOOL hasUnsavedChanges;
@end
#pragma mark -
@implementation UpdateGroupViewController
- (instancetype)init
{
self = [super init];
if (!self) {
return self;
}
[self commonInit];
return self;
}
- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (!self) {
return self;
}
[self commonInit];
return self;
}
- (void)commonInit
{
_messageSender = [Environment getCurrent].messageSender;
_contactsViewHelper = [[ContactsViewHelper alloc] initWithDelegate:self];
_avatarViewHelper = [AvatarViewHelper new];
_avatarViewHelper.delegate = self;
self.memberRecipientIds = [NSMutableSet new];
}
#pragma mark - View Lifecycle
- (void)loadView
{
[super loadView];
OWSAssert(self.thread);
OWSAssert(self.thread.groupModel);
OWSAssert(self.thread.groupModel.groupMemberIds);
[self.memberRecipientIds addObjectsFromArray:self.thread.groupModel.groupMemberIds];
self.previousMemberRecipientIds = [NSSet setWithArray:self.thread.groupModel.groupMemberIds];
self.title = NSLocalizedString(@"EDIT_GROUP_DEFAULT_TITLE", @"The navbar title for the 'update group' view.");
// First section.
UIView *firstSection = [self firstSectionHeader];
[self.view addSubview:firstSection];
[firstSection autoSetDimension:ALDimensionHeight toSize:100.f];
[firstSection autoPinWidthToSuperview];
[firstSection autoPinEdgeToSuperviewEdge:ALEdgeTop];
_tableViewController = [OWSTableViewController new];
_tableViewController.delegate = self;
[self.view addSubview:self.tableViewController.view];
[_tableViewController.view autoPinWidthToSuperview];
[_tableViewController.view autoPinEdge:ALEdgeTop toEdge:ALEdgeBottom ofView:firstSection];
[self autoPinViewToBottomGuideOrKeyboard:self.tableViewController.view];
[self updateTableContents];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self.navigationController.navigationBar setTranslucent:NO];
}
- (void)setHasUnsavedChanges:(BOOL)hasUnsavedChanges
{
_hasUnsavedChanges = hasUnsavedChanges;
[self updateNavigationBar];
}
- (void)updateNavigationBar
{
self.navigationItem.rightBarButtonItem = (self.hasUnsavedChanges
? [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"EDIT_GROUP_UPDATE_BUTTON",
@"The title for the 'update group' button.")
style:UIBarButtonItemStylePlain
target:self
action:@selector(updateGroupPressed)]
: nil);
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
switch (self.mode) {
case UpdateGroupMode_EditGroupName:
[self.groupNameTextField becomeFirstResponder];
break;
case UpdateGroupMode_EditGroupAvatar:
[self showChangeAvatarUI];
break;
default:
break;
}
// Only perform these actions the first time the view appears.
self.mode = UpdateGroupMode_Default;
}
- (UIView *)firstSectionHeader
{
OWSAssert(self.thread);
OWSAssert(self.thread.groupModel);
UIView *firstSectionHeader = [UIView new];
firstSectionHeader.userInteractionEnabled = YES;
[firstSectionHeader
addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(headerWasTapped:)]];
firstSectionHeader.backgroundColor = [UIColor whiteColor];
UIView *threadInfoView = [UIView new];
[firstSectionHeader addSubview:threadInfoView];
[threadInfoView autoPinWidthToSuperviewWithMargin:16.f];
[threadInfoView autoPinHeightToSuperviewWithMargin:16.f];
const CGFloat kAvatarSize = 68.f;
AvatarImageView *avatarView = [AvatarImageView new];
_avatarView = avatarView;
[threadInfoView addSubview:avatarView];
[avatarView autoVCenterInSuperview];
[avatarView autoPinLeadingToSuperview];
[avatarView autoSetDimension:ALDimensionWidth toSize:kAvatarSize];
[avatarView autoSetDimension:ALDimensionHeight toSize:kAvatarSize];
_groupAvatar = self.thread.groupModel.groupImage;
[self updateAvatarView];
UITextField *groupNameTextField = [UITextField new];
_groupNameTextField = groupNameTextField;
self.groupNameTextField.text = [self.thread.groupModel.groupName ows_stripped];
groupNameTextField.textColor = [UIColor blackColor];
groupNameTextField.font = [UIFont ows_dynamicTypeTitle2Font];
groupNameTextField.placeholder
= NSLocalizedString(@"NEW_GROUP_NAMEGROUP_REQUEST_DEFAULT", @"Placeholder text for group name field");
groupNameTextField.delegate = self;
[groupNameTextField addTarget:self
action:@selector(groupNameDidChange:)
forControlEvents:UIControlEventEditingChanged];
[threadInfoView addSubview:groupNameTextField];
[groupNameTextField autoVCenterInSuperview];
[groupNameTextField autoPinTrailingToSuperview];
[groupNameTextField autoPinLeadingToTrailingOfView:avatarView margin:16.f];
[avatarView
addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(avatarTouched:)]];
avatarView.userInteractionEnabled = YES;
return firstSectionHeader;
}
- (void)headerWasTapped:(UIGestureRecognizer *)sender
{
if (sender.state == UIGestureRecognizerStateRecognized) {
[self.groupNameTextField becomeFirstResponder];
}
}
- (void)avatarTouched:(UIGestureRecognizer *)sender
{
if (sender.state == UIGestureRecognizerStateRecognized) {
[self showChangeAvatarUI];
}
}
#pragma mark - Table Contents
- (void)updateTableContents
{
OWSAssert(self.thread);
OWSTableContents *contents = [OWSTableContents new];
__weak UpdateGroupViewController *weakSelf = self;
ContactsViewHelper *contactsViewHelper = self.contactsViewHelper;
// Group Members
OWSTableSection *section = [OWSTableSection new];
section.headerTitle = NSLocalizedString(
@"EDIT_GROUP_MEMBERS_SECTION_TITLE", @"a title for the members section of the 'new/update group' view.");
[section addItem:[OWSTableItem
disclosureItemWithText:NSLocalizedString(@"EDIT_GROUP_MEMBERS_ADD_MEMBER",
@"Label for the cell that lets you add a new member to a group.")
customRowHeight:[ContactTableViewCell rowHeight]
actionBlock:^{
AddToGroupViewController *viewController = [AddToGroupViewController new];
viewController.addToGroupDelegate = weakSelf;
[weakSelf.navigationController pushViewController:viewController animated:YES];
}]];
NSMutableSet *memberRecipientIds = [self.memberRecipientIds mutableCopy];
[memberRecipientIds removeObject:[contactsViewHelper localNumber]];
for (NSString *recipientId in [memberRecipientIds.allObjects sortedArrayUsingSelector:@selector(compare:)]) {
[section
addItem:[OWSTableItem itemWithCustomCellBlock:^{
UpdateGroupViewController *strongSelf = weakSelf;
OWSCAssert(strongSelf);
ContactTableViewCell *cell = [ContactTableViewCell new];
SignalAccount *signalAccount = [contactsViewHelper signalAccountForRecipientId:recipientId];
BOOL isPreviousMember = [strongSelf.previousMemberRecipientIds containsObject:recipientId];
BOOL isBlocked = [contactsViewHelper isRecipientIdBlocked:recipientId];
if (isPreviousMember) {
if (isBlocked) {
cell.accessoryMessage = NSLocalizedString(
@"CONTACT_CELL_IS_BLOCKED", @"An indicator that a contact has been blocked.");
} else {
cell.selectionStyle = UITableViewCellSeparatorStyleNone;
}
} else {
// In the "members" section, we label "new" members as such when editing an existing group.
//
// The only way a "new" member could be blocked is if we blocked them on a linked device
// while in this dialog. We don't need to worry about that edge case.
cell.accessoryMessage = NSLocalizedString(
@"EDIT_GROUP_NEW_MEMBER_LABEL", @"An indicator that a user is a new member of the group.");
}
if (signalAccount) {
[cell configureWithSignalAccount:signalAccount contactsManager:contactsViewHelper.contactsManager];
} else {
[cell configureWithRecipientId:recipientId contactsManager:contactsViewHelper.contactsManager];
}
return cell;
}
customRowHeight:[ContactTableViewCell rowHeight]
actionBlock:^{
SignalAccount *signalAccount = [contactsViewHelper signalAccountForRecipientId:recipientId];
BOOL isPreviousMember = [weakSelf.previousMemberRecipientIds containsObject:recipientId];
BOOL isBlocked = [contactsViewHelper isRecipientIdBlocked:recipientId];
if (isPreviousMember) {
if (isBlocked) {
if (signalAccount) {
[weakSelf showUnblockAlertForSignalAccount:signalAccount];
} else {
[weakSelf showUnblockAlertForRecipientId:recipientId];
}
} else {
[OWSAlerts
showAlertWithTitle:
NSLocalizedString(@"UPDATE_GROUP_CANT_REMOVE_MEMBERS_ALERT_TITLE",
@"Title for alert indicating that group members can't be removed.")
message:NSLocalizedString(
@"UPDATE_GROUP_CANT_REMOVE_MEMBERS_ALERT_MESSAGE",
@"Title for alert indicating that group members can't "
@"be removed.")];
}
} else {
[weakSelf removeRecipientId:recipientId];
}
}]];
}
[contents addSection:section];
self.tableViewController.contents = contents;
}
- (void)showUnblockAlertForSignalAccount:(SignalAccount *)signalAccount
{
OWSAssert(signalAccount);
__weak UpdateGroupViewController *weakSelf = self;
[BlockListUIUtils showUnblockSignalAccountActionSheet:signalAccount
fromViewController:self
blockingManager:self.contactsViewHelper.blockingManager
contactsManager:self.contactsViewHelper.contactsManager
completionBlock:^(BOOL isBlocked) {
if (!isBlocked) {
[weakSelf updateTableContents];
}
}];
}
- (void)showUnblockAlertForRecipientId:(NSString *)recipientId
{
OWSAssert(recipientId.length > 0);
__weak UpdateGroupViewController *weakSelf = self;
[BlockListUIUtils showUnblockPhoneNumberActionSheet:recipientId
fromViewController:self
blockingManager:self.contactsViewHelper.blockingManager
contactsManager:self.contactsViewHelper.contactsManager
completionBlock:^(BOOL isBlocked) {
if (!isBlocked) {
[weakSelf updateTableContents];
}
}];
}
- (void)removeRecipientId:(NSString *)recipientId
{
OWSAssert(recipientId.length > 0);
[self.memberRecipientIds removeObject:recipientId];
[self updateTableContents];
}
#pragma mark - Methods
- (void)updateGroup
{
OWSAssert(self.conversationSettingsViewDelegate);
NSString *groupName = [self.groupNameTextField.text ows_stripped];
TSGroupModel *groupModel = [[TSGroupModel alloc] initWithTitle:groupName
memberIds:[self.memberRecipientIds.allObjects mutableCopy]
image:self.groupAvatar
groupId:self.thread.groupModel.groupId];
[self.conversationSettingsViewDelegate groupWasUpdated:groupModel];
}
#pragma mark - Group Avatar
- (void)showChangeAvatarUI
{
[self.groupNameTextField resignFirstResponder];
[self.avatarViewHelper showChangeAvatarUI];
}
- (void)setGroupAvatar:(nullable UIImage *)groupAvatar
{
OWSAssert([NSThread isMainThread]);
_groupAvatar = groupAvatar;
self.hasUnsavedChanges = YES;
[self updateAvatarView];
}
- (void)updateAvatarView
{
self.avatarView.image = (self.groupAvatar ?: [UIImage imageNamed:@"empty-group-avatar"]);
}
#pragma mark - Event Handling
- (void)backButtonPressed
{
[self.groupNameTextField resignFirstResponder];
if (!self.hasUnsavedChanges) {
// If user made no changes, return to conversation settings view.
[self.navigationController popViewControllerAnimated:YES];
return;
}
UIAlertController *controller = [UIAlertController
alertControllerWithTitle:NSLocalizedString(@"EDIT_GROUP_VIEW_UNSAVED_CHANGES_TITLE",
@"The alert title if user tries to exit update group view without saving changes.")
message:
NSLocalizedString(@"EDIT_GROUP_VIEW_UNSAVED_CHANGES_MESSAGE",
@"The alert message if user tries to exit update group view without saving changes.")
preferredStyle:UIAlertControllerStyleAlert];
[controller
addAction:[UIAlertAction actionWithTitle:NSLocalizedString(@"ALERT_SAVE",
@"The label for the 'save' button in action sheets.")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *action) {
OWSAssert(self.conversationSettingsViewDelegate);
[self updateGroup];
[self.conversationSettingsViewDelegate popAllConversationSettingsViews];
}]];
[controller addAction:[UIAlertAction actionWithTitle:NSLocalizedString(@"ALERT_DONT_SAVE",
@"The label for the 'don't save' button in action sheets.")
style:UIAlertActionStyleDestructive
handler:^(UIAlertAction *action) {
[self.navigationController popViewControllerAnimated:YES];
}]];
[self presentViewController:controller animated:YES completion:nil];
}
- (void)updateGroupPressed
{
OWSAssert(self.conversationSettingsViewDelegate);
[self updateGroup];
[self.conversationSettingsViewDelegate popAllConversationSettingsViews];
}
- (void)groupNameDidChange:(id)sender
{
self.hasUnsavedChanges = YES;
}
#pragma mark - Text Field Delegate
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[self.groupNameTextField resignFirstResponder];
return NO;
}
#pragma mark - OWSTableViewControllerDelegate
- (void)tableViewWillBeginDragging
{
[self.groupNameTextField resignFirstResponder];
}
#pragma mark - ContactsViewHelperDelegate
- (void)contactsViewHelperDidUpdateContacts
{
[self updateTableContents];
}
- (BOOL)shouldHideLocalNumber
{
return YES;
}
#pragma mark - AvatarViewHelperDelegate
- (NSString *)avatarActionSheetTitle
{
return NSLocalizedString(
@"NEW_GROUP_ADD_PHOTO_ACTION", @"Action Sheet title prompting the user for a group avatar");
}
- (void)avatarDidChange:(UIImage *)image
{
OWSAssert(image);
self.groupAvatar = image;
}
- (UIViewController *)fromViewController
{
return self;
}
- (BOOL)hasClearAvatarAction
{
return NO;
}
#pragma mark - AddToGroupViewControllerDelegate
- (void)recipientIdWasAdded:(NSString *)recipientId
{
[self.memberRecipientIds addObject:recipientId];
self.hasUnsavedChanges = YES;
[self updateTableContents];
}
- (BOOL)isRecipientGroupMember:(NSString *)recipientId
{
OWSAssert(recipientId.length > 0);
return [self.memberRecipientIds containsObject:recipientId];
}
#pragma mark - OWSNavigationView
- (BOOL)shouldCancelNavigationBack
{
BOOL result = self.hasUnsavedChanges;
if (result) {
[self backButtonPressed];
}
return result;
}
@end
NS_ASSUME_NONNULL_END
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