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

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//
// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//
#import "NewGroupViewController.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 <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
const NSUInteger kNewGroupViewControllerAvatarWidth = 68;
@interface NewGroupViewController () <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) NSMutableSet<NSString *> *memberRecipientIds;
@property (nonatomic) BOOL hasUnsavedChanges;
@property (nonatomic) BOOL hasAppeared;
@end
#pragma mark -
@implementation NewGroupViewController
- (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];
self.title = [MessageStrings newGroupDefaultTitle];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]
initWithTitle:NSLocalizedString(@"NEW_GROUP_CREATE_BUTTON", @"The title for the 'create group' button.")
style:UIBarButtonItemStylePlain
target:self
action:@selector(createGroup)];
self.navigationItem.rightBarButtonItem.imageInsets = UIEdgeInsetsMake(0, -10, 0, 10);
self.navigationItem.rightBarButtonItem.accessibilityLabel
= NSLocalizedString(@"FINISH_GROUP_CREATION_LABEL", @"Accessibilty label for finishing new group");
// 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];
}
- (UIView *)firstSectionHeader
{
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];
AvatarImageView *avatarView = [AvatarImageView new];
_avatarView = avatarView;
[threadInfoView addSubview:avatarView];
[avatarView autoVCenterInSuperview];
[avatarView autoPinLeadingToSuperview];
[avatarView autoSetDimension:ALDimensionWidth toSize:kNewGroupViewControllerAvatarWidth];
[avatarView autoSetDimension:ALDimensionHeight toSize:kNewGroupViewControllerAvatarWidth];
[self updateAvatarView];
UITextField *groupNameTextField = [UITextField new];
_groupNameTextField = groupNameTextField;
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
{
OWSTableContents *contents = [OWSTableContents new];
__weak NewGroupViewController *weakSelf = self;
ContactsViewHelper *contactsViewHelper = self.contactsViewHelper;
NSArray<SignalAccount *> *signalAccounts = self.contactsViewHelper.signalAccounts;
NSMutableSet *nonContactMemberRecipientIds = [self.memberRecipientIds mutableCopy];
for (SignalAccount *signalAccount in signalAccounts) {
[nonContactMemberRecipientIds removeObject:signalAccount.recipientId];
}
// Non-contact Members
if (nonContactMemberRecipientIds.count > 0 || signalAccounts.count < 1) {
OWSTableSection *nonContactsSection = [OWSTableSection new];
nonContactsSection.headerTitle = NSLocalizedString(
@"NEW_GROUP_NON_CONTACTS_SECTION_TITLE", @"a title for the non-contacts section of the 'new group' view.");
[nonContactsSection addItem:[self createAddNonContactItem]];
for (NSString *recipientId in
[nonContactMemberRecipientIds.allObjects sortedArrayUsingSelector:@selector(compare:)]) {
[nonContactsSection
addItem:[OWSTableItem itemWithCustomCellBlock:^{
NewGroupViewController *strongSelf = weakSelf;
OWSCAssert(strongSelf);
ContactTableViewCell *cell = [ContactTableViewCell new];
SignalAccount *signalAccount = [contactsViewHelper signalAccountForRecipientId:recipientId];
BOOL isCurrentMember = [strongSelf.memberRecipientIds containsObject:recipientId];
BOOL isBlocked = [contactsViewHelper isRecipientIdBlocked:recipientId];
if (isCurrentMember) {
// In the "contacts" section, we label members as such when editing an existing group.
cell.accessoryMessage = NSLocalizedString(
@"NEW_GROUP_MEMBER_LABEL", @"An indicator that a user is a member of the new group.");
} else if (isBlocked) {
cell.accessoryMessage = NSLocalizedString(
@"CONTACT_CELL_IS_BLOCKED", @"An indicator that a contact has been blocked.");
} else {
OWSAssert(cell.accessoryMessage == nil);
}
if (signalAccount) {
[cell configureWithSignalAccount:signalAccount
contactsManager:contactsViewHelper.contactsManager];
} else {
[cell configureWithRecipientId:recipientId contactsManager:contactsViewHelper.contactsManager];
}
return cell;
}
customRowHeight:[ContactTableViewCell rowHeight]
actionBlock:^{
BOOL isCurrentMember = [weakSelf.memberRecipientIds containsObject:recipientId];
BOOL isBlocked = [contactsViewHelper isRecipientIdBlocked:recipientId];
if (isCurrentMember) {
[weakSelf removeRecipientId:recipientId];
} else if (isBlocked) {
[BlockListUIUtils
showUnblockPhoneNumberActionSheet:recipientId
fromViewController:weakSelf
blockingManager:contactsViewHelper.blockingManager
contactsManager:contactsViewHelper.contactsManager
completionBlock:^(BOOL isStillBlocked) {
if (!isStillBlocked) {
[weakSelf addRecipientId:recipientId];
}
}];
} else {
BOOL didShowSNAlert = [SafetyNumberConfirmationAlert
presentAlertIfNecessaryWithRecipientId:recipientId
confirmationText:NSLocalizedString(
@"SAFETY_NUMBER_CHANGED_CONFIRM_"
@"ADD_TO_GROUP_ACTION",
@"button title to confirm adding "
@"a recipient to a group when "
@"their safety "
@"number has recently changed")
contactsManager:contactsViewHelper.contactsManager
completion:^(BOOL didConfirmIdentity) {
if (didConfirmIdentity) {
[weakSelf addRecipientId:recipientId];
}
}];
if (didShowSNAlert) {
return;
}
[weakSelf addRecipientId:recipientId];
}
}]];
}
[contents addSection:nonContactsSection];
}
// Contacts
OWSTableSection *signalAccountSection = [OWSTableSection new];
signalAccountSection.headerTitle = NSLocalizedString(
@"EDIT_GROUP_CONTACTS_SECTION_TITLE", @"a title for the contacts section of the 'new/update group' view.");
if (signalAccounts.count > 0) {
if (nonContactMemberRecipientIds.count < 1) {
// If the group contains any non-contacts or has not contacts,
// the "add non-contact user" will show up in the previous section
// of the table. However, it's more attractive to hide that section
// for the common case where people want to create a group from just
// their contacts. Therefore, when that section is hidden, we want
// to allow people to add non-contacts.
[signalAccountSection addItem:[self createAddNonContactItem]];
}
for (SignalAccount *signalAccount in signalAccounts) {
[signalAccountSection
addItem:[OWSTableItem itemWithCustomCellBlock:^{
NewGroupViewController *strongSelf = weakSelf;
OWSCAssert(strongSelf);
ContactTableViewCell *cell = [ContactTableViewCell new];
NSString *recipientId = signalAccount.recipientId;
BOOL isCurrentMember = [strongSelf.memberRecipientIds containsObject:recipientId];
BOOL isBlocked = [contactsViewHelper isRecipientIdBlocked:recipientId];
if (isCurrentMember) {
// In the "contacts" section, we label members as such when editing an existing group.
cell.accessoryMessage = NSLocalizedString(
@"NEW_GROUP_MEMBER_LABEL", @"An indicator that a user is a member of the new group.");
} else if (isBlocked) {
cell.accessoryMessage = NSLocalizedString(
@"CONTACT_CELL_IS_BLOCKED", @"An indicator that a contact has been blocked.");
} else {
OWSAssert(cell.accessoryMessage == nil);
}
[cell configureWithSignalAccount:signalAccount contactsManager:contactsViewHelper.contactsManager];
return cell;
}
customRowHeight:[ContactTableViewCell rowHeight]
actionBlock:^{
NSString *recipientId = signalAccount.recipientId;
BOOL isCurrentMember = [weakSelf.memberRecipientIds containsObject:recipientId];
BOOL isBlocked = [contactsViewHelper isRecipientIdBlocked:recipientId];
if (isCurrentMember) {
[weakSelf removeRecipientId:recipientId];
} else if (isBlocked) {
[BlockListUIUtils
showUnblockSignalAccountActionSheet:signalAccount
fromViewController:weakSelf
blockingManager:contactsViewHelper.blockingManager
contactsManager:contactsViewHelper.contactsManager
completionBlock:^(BOOL isStillBlocked) {
if (!isStillBlocked) {
[weakSelf addRecipientId:recipientId];
}
}];
} else {
BOOL didShowSNAlert = [SafetyNumberConfirmationAlert
presentAlertIfNecessaryWithRecipientId:signalAccount.recipientId
confirmationText:NSLocalizedString(
@"SAFETY_NUMBER_CHANGED_CONFIRM_"
@"ADD_TO_GROUP_ACTION",
@"button title to confirm adding "
@"a recipient to a group when "
@"their safety "
@"number has recently changed")
contactsManager:contactsViewHelper.contactsManager
completion:^(BOOL didConfirmIdentity) {
if (didConfirmIdentity) {
[weakSelf addRecipientId:recipientId];
}
}];
if (didShowSNAlert) {
return;
}
[weakSelf addRecipientId:recipientId];
}
}]];
}
} else {
[signalAccountSection
addItem:[OWSTableItem
softCenterLabelItemWithText:NSLocalizedString(@"SETTINGS_BLOCK_LIST_NO_CONTACTS",
@"A label that indicates the user has no Signal contacts.")]];
}
[contents addSection:signalAccountSection];
self.tableViewController.contents = contents;
}
- (OWSTableItem *)createAddNonContactItem
{
__weak NewGroupViewController *weakSelf = self;
return [OWSTableItem
disclosureItemWithText:NSLocalizedString(@"NEW_GROUP_ADD_NON_CONTACT",
@"A label for the cell that lets you add a new non-contact member to a group.")
customRowHeight:[ContactTableViewCell rowHeight]
actionBlock:^{
AddToGroupViewController *viewController = [AddToGroupViewController new];
viewController.addToGroupDelegate = weakSelf;
viewController.hideContacts = YES;
[weakSelf.navigationController pushViewController:viewController animated:YES];
}];
}
- (void)removeRecipientId:(NSString *)recipientId
{
OWSAssert(recipientId.length > 0);
[self.memberRecipientIds removeObject:recipientId];
[self updateTableContents];
}
- (void)addRecipientId:(NSString *)recipientId
{
OWSAssert(recipientId.length > 0);
[self.memberRecipientIds addObject:recipientId];
self.hasUnsavedChanges = YES;
[self updateTableContents];
}
#pragma mark - Methods
- (void)viewDidLoad
{
[super viewDidLoad];
[self.navigationController.navigationBar setTranslucent:NO];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if (!self.hasAppeared) {
[self.groupNameTextField becomeFirstResponder];
self.hasAppeared = YES;
}
}
#pragma mark - Actions
- (void)createGroup
{
OWSAssert([NSThread isMainThread]);
TSGroupModel *model = [self makeGroup];
__block TSGroupThread *thread;
[[TSStorageManager sharedManager].dbReadWriteConnection
readWriteWithBlock:^(YapDatabaseReadWriteTransaction *_Nonnull transaction) {
thread = [TSGroupThread getOrCreateThreadWithGroupModel:model transaction:transaction];
}];
OWSAssert(thread);
[OWSProfileManager.sharedManager addThreadToProfileWhitelist:thread];
void (^successHandler)(void) = ^{
DDLogError(@"Group creation successful.");
dispatch_async(dispatch_get_main_queue(), ^{
[self dismissViewControllerAnimated:YES
completion:^{
// Pop to new group thread.
[Environment presentConversationForThread:thread];
}];
});
};
void (^failureHandler)(NSError *error) = ^(NSError *error) {
DDLogError(@"Group creation failed: %@", error);
dispatch_async(dispatch_get_main_queue(), ^{
[self dismissViewControllerAnimated:YES
completion:^{
// Add an error message to the new group indicating
// that group creation didn't succeed.
[[[TSErrorMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
inThread:thread
failedMessageType:TSErrorMessageGroupCreationFailed]
save];
[Environment presentConversationForThread:thread];
}];
});
};
[ModalActivityIndicatorViewController
presentFromViewController:self
canCancel:NO
backgroundBlock:^(ModalActivityIndicatorViewController *modalActivityIndicator) {
TSOutgoingMessage *message =
[[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
inThread:thread
groupMetaMessage:TSGroupMessageNew];
[message updateWithCustomMessage:NSLocalizedString(@"GROUP_CREATED", nil)];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
if (model.groupImage) {
NSData *data = UIImagePNGRepresentation(model.groupImage);
DataSource *_Nullable dataSource =
[DataSourceValue dataSourceWithData:data fileExtension:@"png"];
[self.messageSender enqueueAttachment:dataSource
contentType:OWSMimeTypeImagePng
sourceFilename:nil
inMessage:message
success:successHandler
failure:failureHandler];
} else {
[self.messageSender enqueueMessage:message success:successHandler failure:failureHandler];
}
});
}];
}
- (TSGroupModel *)makeGroup
{
NSString *groupName = [self.groupNameTextField.text ows_stripped];
NSMutableArray<NSString *> *recipientIds = [self.memberRecipientIds.allObjects mutableCopy];
[recipientIds addObject:[self.contactsViewHelper localNumber]];
NSData *groupId = [SecurityUtils generateRandomBytes:16];
return [[TSGroupModel alloc] initWithTitle:groupName memberIds:recipientIds image:self.groupAvatar groupId:groupId];
}
#pragma mark - Group Avatar
- (void)showChangeAvatarUI
{
[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(@"NEW_GROUP_VIEW_UNSAVED_CHANGES_TITLE",
@"The alert title if user tries to exit the new group view without saving changes.")
message:
NSLocalizedString(@"NEW_GROUP_VIEW_UNSAVED_CHANGES_MESSAGE",
@"The alert message if user tries to exit the new group view without saving changes.")
preferredStyle:UIAlertControllerStyleAlert];
[controller
addAction:[UIAlertAction actionWithTitle:NSLocalizedString(@"ALERT_DISCARD_BUTTON",
@"The label for the 'discard' button in alerts and action sheets.")
style:UIAlertActionStyleDestructive
handler:^(UIAlertAction *action) {
[self.navigationController popViewControllerAnimated:YES];
}]];
[controller addAction:[OWSAlerts cancelAction]];
[self presentViewController:controller animated:YES completion:nil];
}
- (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 addRecipientId:recipientId];
}
- (BOOL)isRecipientGroupMember:(NSString *)recipientId
{
OWSAssert(recipientId.length > 0);
return [self.memberRecipientIds containsObject:recipientId];
}
#pragma mark - OWSNavigationView
- (BOOL)shouldCancelNavigationBack
{
BOOL result = self.hasUnsavedChanges;
if (self.hasUnsavedChanges) {
[self backButtonPressed];
}
return result;
}
@end
NS_ASSUME_NONNULL_END
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