Let users edit group name and avatar by tapping on them in group settings view.

// FREEBIE

Signal/src/ViewControllers/NewGroupViewController.h

@@ -1,9 +1,5 @@
 //
-//  NewGroupViewController.h
-//  Signal
-//
-//  Created by Dylan Bourgeois on 13/11/14.
-//  Copyright (c) 2014 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
 //
 
 #import <UIKit/UIKit.h>
@@ -17,12 +13,16 @@
                                                       UITextFieldDelegate>
 
 - (void)configWithThread:(TSGroupThread *)thread;
-@property (nonatomic, strong) IBOutlet UITableView *tableView;
-@property (nonatomic, strong) IBOutlet UITextField *nameGroupTextField;
-@property (nonatomic, strong) IBOutlet UIButton *groupImageButton;
-@property (nonatomic, strong) IBOutlet UIView *tapToDismissView;
-@property (nonatomic, strong) IBOutlet UILabel *addPeopleLabel;
-@property (nonatomic, strong) UIImage *groupImage;
-@property (nonatomic, strong) TSGroupModel *groupModel;
+
+@property (nonatomic) IBOutlet UITableView *tableView;
+@property (nonatomic) IBOutlet UITextField *nameGroupTextField;
+@property (nonatomic) IBOutlet UIButton *groupImageButton;
+@property (nonatomic) IBOutlet UIView *tapToDismissView;
+@property (nonatomic) IBOutlet UILabel *addPeopleLabel;
+@property (nonatomic) UIImage *groupImage;
+@property (nonatomic) TSGroupModel *groupModel;
+
+@property (nonatomic) BOOL shouldEditGroupNameOnAppear;
+@property (nonatomic) BOOL shouldEditAvatarOnAppear;
 
 @end

Signal/src/ViewControllers/NewGroupViewController.m

@@ -244,6 +244,19 @@ static NSString *const kUnwindToMessagesViewSegue = @"UnwindToMessagesViewSegue"
     _addPeopleLabel.text            = NSLocalizedString(@"NEW_GROUP_REQUEST_ADDPEOPLE", @"");
 }
 
+- (void)viewDidAppear:(BOOL)animated
+{
+    [super viewDidAppear:animated];
+
+    if (self.shouldEditGroupNameOnAppear) {
+        [self.nameGroupTextField becomeFirstResponder];
+    } else if (self.shouldEditAvatarOnAppear) {
+        [self addGroupPhoto:nil];
+    }
+    self.shouldEditGroupNameOnAppear = NO;
+    self.shouldEditAvatarOnAppear = NO;
+}
+
 #pragma mark - Initializers
 
 - (void)initializeDelegates {

Signal/src/ViewControllers/OWSConversationSettingsTableViewController.m

@@ -7,6 +7,7 @@
 #import "Environment.h"
 #import "FingerprintViewController.h"
 #import "NewGroupViewController.h"
+#import "OWSAnyTouchGestureRecognizer.h"
 #import "OWSAvatarBuilder.h"
 #import "OWSBlockingManager.h"
 #import "OWSContactsManager.h"
@@ -42,6 +43,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, readonly) OWSMessageSender *messageSender;
 @property (nonatomic, readonly) OWSBlockingManager *blockingManager;
 
+@property (nonatomic, readonly) UIImageView *avatarView;
 @property (nonatomic, readonly) UILabel *disappearingMessagesDurationLabel;
 
 @end
@@ -500,6 +502,7 @@ NS_ASSUME_NONNULL_BEGIN
     OWSAssert(avatar);
     const CGFloat kAvatarSize = 68.f;
     UIImageView *avatarView = [[UIImageView alloc] initWithImage:avatar];
+    _avatarView = avatarView;
     avatarView.layer.borderColor = UIColor.clearColor.CGColor;
     avatarView.layer.masksToBounds = YES;
     avatarView.layer.cornerRadius = kAvatarSize / 2.0f;
@@ -543,9 +546,39 @@ NS_ASSUME_NONNULL_BEGIN
         [threadTitleLabel autoPinEdgeToSuperviewEdge:ALEdgeBottom];
     }
 
+    [firstSectionHeader
+        addGestureRecognizer:[[OWSAnyTouchGestureRecognizer alloc] initWithTarget:self
+                                                                           action:@selector(conversationNameTouched:)]];
+    firstSectionHeader.userInteractionEnabled = YES;
+    for (UIView *subview in firstSectionHeader.subviews) {
+        subview.userInteractionEnabled = NO;
+    }
+
     return firstSectionHeader;
 }
 
+- (void)conversationNameTouched:(UIGestureRecognizer *)sender
+{
+    if (sender.state == UIGestureRecognizerStateBegan || sender.state == UIGestureRecognizerStateRecognized) {
+        if (self.isGroupThread) {
+            NewGroupViewController *newGroupViewController = [[UIStoryboard storyboardWithName:@"Main" bundle:NULL]
+                instantiateViewControllerWithIdentifier:@"NewGroupViewController"];
+            [newGroupViewController configWithThread:(TSGroupThread *)self.thread];
+
+            CGPoint location = [sender locationInView:self.avatarView];
+            if (CGRectContainsPoint(self.avatarView.bounds, location)) {
+                newGroupViewController.shouldEditAvatarOnAppear = YES;
+            } else {
+                newGroupViewController.shouldEditGroupNameOnAppear = YES;
+            }
+
+            [self.navigationController pushViewController:newGroupViewController animated:YES];
+        } else {
+            // TODO: Edit 1:1 contact.
+        }
+    }
+}
+
 - (UIImageView *)viewForIconWithName:(NSString *)iconName
 {
     UIImage *icon = [UIImage imageNamed:iconName];

Signal/src/views/OWSAnyTouchGestureRecognizer.m

@@ -38,6 +38,20 @@
     }
 }
 
+- (UIView *)rootViewInViewHierarchy:(UIView *)view
+{
+    OWSAssert(view);
+    UIResponder *responder = view;
+    UIView *lastView = nil;
+    while (responder) {
+        if ([responder isKindOfClass:[UIView class]]) {
+            lastView = (UIView *)responder;
+        }
+        responder = [responder nextResponder];
+    }
+    return lastView;
+}
+
 - (BOOL)isValidTouch:(NSSet<UITouch *> *)touches event:(UIEvent *)event
 {
     if (event.allTouches.count > 1) {
@@ -59,8 +73,10 @@
 
     // Ignore touches that start near the top or bottom edge of the screen;
     // they may be a system edge swipe gesture.
-    CGFloat distanceToTopEdge = MAX(0, location.y);
-    CGFloat distanceToBottomEdge = MAX(0, self.view.bounds.size.height - location.y);
+    UIView *rootView = [self rootViewInViewHierarchy:self.view];
+    CGPoint rootLocation = [touch locationInView:rootView];
+    CGFloat distanceToTopEdge = MAX(0, rootLocation.y);
+    CGFloat distanceToBottomEdge = MAX(0, rootView.bounds.size.height - rootLocation.y);
     CGFloat distanceToNearestEdge = MIN(distanceToTopEdge, distanceToBottomEdge);
     CGFloat kSystemEdgeSwipeTolerance = 50.f;
     if (distanceToNearestEdge < kSystemEdgeSwipeTolerance) {