Fixed a number of tweaks and bugs with message requests

Removed the "Back" text from the back buttons
Removed the inset on the 'Path' settings button so the text remains horizontally centered
Hid the settings button from message request threads
Fixed an issue where the back button would remain visible in a conversation when the search field was visible
Fixed an issue where the tintColor of the conversation search field didn't match the global search field
Fixed an issue where sending an attachment response to a message request wouldn't approve the message request
Updated the size and positioning of the message request 'Clear All' button to match the DM 'Next' button
Updated the message request 'Clear All' button to start visible (so it's visible during the push animation) since that's the most likely state it'll be in
Updated the 'Message Requests' cell to use the pinned background colour
Updated the fallback for contact thread names to be a middle-truncated string (4 characters either side)

Session/Conversations/ConversationVC+Interaction.swift

@@ -10,6 +10,16 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
     ConversationTitleViewDelegate {
 
     func handleTitleViewTapped() {
+        // Don't take the user to settings for message requests
+        guard
+            let contactThread: TSContactThread = thread as? TSContactThread,
+            let contact: Contact = Storage.shared.getContact(with: contactThread.contactSessionID()),
+            contact.isApproved,
+            contact.didApproveMe
+        else {
+            return
+        }
+        
         openSettings()
     }
     
@@ -292,20 +302,41 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
 
     func sendAttachments(_ attachments: [SignalAttachment], with text: String, onComplete: (() -> ())? = nil) {
         guard !showBlockedModalIfNeeded() else { return }
+        
         for attachment in attachments {
             if attachment.hasError {
                 return showErrorAlert(for: attachment, onDismiss: onComplete)
             }
         }
+        
         let thread = self.thread
+        let sentTimestamp: UInt64 = NSDate.millisecondTimestamp()
         let message = VisibleMessage()
-        message.sentTimestamp = NSDate.millisecondTimestamp()
+        message.sentTimestamp = sentTimestamp
         message.text = replaceMentions(in: text)
+        
+        // Note: 'shouldBeVisible' is set to true the first time a thread is saved so we can
+        // use it to determine if the user is creating a new thread and update the 'isApproved'
+        // flags appropriately
+        let oldThreadShouldBeVisible: Bool = thread.shouldBeVisible
         let tsMessage = TSOutgoingMessage.from(message, associatedWith: thread)
-        Storage.write(with: { transaction in
+        
+        Storage.write(
+            with: { transaction in
                 tsMessage.save(with: transaction)
                 // The new message cell is inserted at this point, but the TSOutgoingMessage doesn't have its attachment yet
-        }, completion: { [weak self] in
+            },
+            completion: { [weak self] in
+                Storage.shared.write(
+                    with: { transaction in
+                        self?.approveMessageRequestIfNeeded(
+                            for: self?.thread,
+                            with: (transaction as! YapDatabaseReadWriteTransaction),
+                            isNewThread: !oldThreadShouldBeVisible,
+                            timestamp: (sentTimestamp - 1)  // Set 1ms earlier as this is used for sorting
+                        )
+                    },
+                    completion: { [weak self] in
                         Storage.write(with: { transaction in
                             MessageSender.send(message, with: attachments, in: thread, using: transaction)
                         }, completion: { [weak self] in
@@ -317,7 +348,10 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
                 
                         // Attachment successfully sent - dismiss the screen
                         onComplete?()
-        })
+                    }
+                )
+            }
+        )
     }
 
     func handleMessageSent() {

Session/Conversations/ConversationVC.swift

@@ -1,5 +1,6 @@
 import SessionUIKit
 import SessionMessagingKit
+import UIKit
 
 // TODO:
 // • Slight paging glitch when scrolling up and loading more content
@@ -465,32 +466,55 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
     // MARK: Updating
     
     func updateNavBarButtons() {
+        // Back button (to appear on pushed screen)
+        let backButton = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
+        backButton.tintColor = Colors.text
+        navigationItem.backBarButtonItem = backButton
+        
+        navigationItem.hidesBackButton = isShowingSearchUI
+        
         if isShowingSearchUI {
             navigationItem.leftBarButtonItem = nil
             navigationItem.rightBarButtonItems = []
-        } else {
+        }
+        else {
+            navigationItem.hidesBackButton = false
             navigationItem.leftBarButtonItem = UIViewController.createOWSBackButton(withTarget: self, selector: #selector(handleBackPressed))
             
-            let rightBarButtonItem: UIBarButtonItem
+            if let contactThread: TSContactThread = thread as? TSContactThread {
-            if thread is TSContactThread {
+                // Don't show the settings button for message requests
+                if let contact: Contact = Storage.shared.getContact(with: contactThread.contactSessionID()), contact.isApproved, contact.didApproveMe {
                     let size = Values.verySmallProfilePictureSize
                     let profilePictureView = ProfilePictureView()
-                profilePictureView.accessibilityLabel = "Settings button"
                     profilePictureView.size = size
                     profilePictureView.update(for: thread)
                     profilePictureView.set(.width, to: size)
                     profilePictureView.set(.height, to: size)
+                    
                     let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(openSettings))
                     profilePictureView.addGestureRecognizer(tapGestureRecognizer)
-                rightBarButtonItem = UIBarButtonItem(customView: profilePictureView)
+                    
-            } else {
+                    let rightBarButtonItem: UIBarButtonItem = UIBarButtonItem(customView: profilePictureView)
-                rightBarButtonItem = UIBarButtonItem(image: UIImage(named: "Gear"), style: .plain, target: self, action: #selector(openSettings))
+                    rightBarButtonItem.accessibilityLabel = "Settings button"
+                    rightBarButtonItem.isAccessibilityElement = true
+                    
+                    navigationItem.rightBarButtonItem = rightBarButtonItem
                 }
+                else {
+                    // Note: Adding an empty button because without it the title alignment is busted (Note: The size was
+                    // taken from the layout inspector for the back button in Xcode
+                    navigationItem.rightBarButtonItem = UIBarButtonItem(customView: UIView(frame: CGRect(x: 0, y: 0, width: 37, height: 44)))
+                }
+            }
+            else {
+                let rightBarButtonItem: UIBarButtonItem = UIBarButtonItem(image: UIImage(named: "Gear"), style: .plain, target: self, action: #selector(openSettings))
                 rightBarButtonItem.accessibilityLabel = "Settings button"
                 rightBarButtonItem.isAccessibilityElement = true
+                
                 navigationItem.rightBarButtonItem = rightBarButtonItem
             }
         }
+    }
     
     private func highlightFocusedMessageIfNeeded() {
         if let indexPath = focusedMessageIndexPath, let cell = messagesTableView.cellForRow(at: indexPath) as? VisibleMessageCell {
@@ -819,7 +843,7 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
         let searchBar = searchController.uiSearchController.searchBar
         searchBar.searchBarStyle = .minimal
         searchBar.barStyle = .black
-        searchBar.tintColor = Colors.accent
+        searchBar.tintColor = Colors.text
         let searchIcon = UIImage(named: "searchbar_search")!.asTintedImage(color: Colors.searchBarPlaceholder)
         searchBar.setImage(searchIcon, for: .search, state: UIControl.State.normal)
         let clearIcon = UIImage(named: "searchbar_clear")!.asTintedImage(color: Colors.searchBarPlaceholder)

Session/Conversations/Settings/OWSConversationSettingsViewController.m

@@ -359,13 +359,6 @@ CGFloat kIconViewLength = 24;
             [switchView addTarget:strongSelf action:@selector(disappearingMessagesSwitchValueDidChange:)
                 forControlEvents:UIControlEventValueChanged];
 
-            // Disable Disappearing Messages if the conversation hasn't been approved
-            if (!self.thread.isGroupThread) {
-                TSContactThread *thread = (TSContactThread *)self.thread;
-                SNContact *contact = [LKStorage.shared getContactWithSessionID:thread.contactSessionID];
-                [switchView setEnabled:(contact.isApproved && contact.didApproveMe)];
-            }
-
             UIStackView *topRow =
                 [[UIStackView alloc] initWithArrangedSubviews:@[ iconView, rowLabel, switchView ]];
             topRow.spacing = strongSelf.iconSpacing;
@@ -438,13 +431,6 @@ CGFloat kIconViewLength = 24;
                 [slider autoPinTrailingToSuperviewMargin];
                 [slider autoPinBottomToSuperviewMargin];
                 
-                // Disable Disappearing Messages slider if the conversation hasn't been approved (just in case)
-                if (!self.thread.isGroupThread) {
-                    TSContactThread *thread = (TSContactThread *)self.thread;
-                    SNContact *contact = [LKStorage.shared getContactWithSessionID:thread.contactSessionID];
-                    [slider setEnabled:(contact.isApproved && contact.didApproveMe)];
-                }
-
                 cell.userInteractionEnabled = !strongSelf.hasLeftGroup;
 
                 cell.accessibilityIdentifier = ACCESSIBILITY_IDENTIFIER_WITH_NAME(

Session/Conversations/Views & Modals/ConversationTitleView.swift

@@ -73,13 +73,17 @@ final class ConversationTitleView : UIView {
     private func getTitle() -> String {
         if let thread = thread as? TSGroupThread {
             return thread.groupModel.groupName!
-        } else if thread.isNoteToSelf() {
+        }
+        else if thread.isNoteToSelf() {
             return "Note to Self"
-        } else {
+        }
+        else {
             let sessionID = (thread as! TSContactThread).contactSessionID()
             var result = sessionID
             Storage.read { transaction in
-                result = Storage.shared.getContact(with: sessionID)?.displayName(for: .regular) ?? "Anonymous"
+                let displayName: String = ((Storage.shared.getContact(with: sessionID)?.displayName(for: .regular)) ?? sessionID)
+                let middleTruncatedHexKey: String = "\(sessionID.prefix(4))...\(sessionID.suffix(4))"
+                result = (displayName == sessionID ? middleTruncatedHexKey : displayName)
             }
             return result
         }

Session/Home/HomeVC.swift

@@ -393,11 +393,18 @@ final class HomeVC : BaseVC, UITableViewDataSource, UITableViewDelegate, NewConv
         profilePictureViewContainer.addSubview(pathStatusView)
         pathStatusView.pin(.trailing, to: .trailing, of: profilePictureViewContainer)
         pathStatusView.pin(.bottom, to: .bottom, of: profilePictureViewContainer)
+        
+        // Back button (to appear on pushed screen)
+        let backButton = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
+        backButton.tintColor = Colors.text
+        navigationItem.backBarButtonItem = backButton
+        
         // Left bar button item
         let leftBarButtonItem = UIBarButtonItem(customView: profilePictureViewContainer)
         leftBarButtonItem.accessibilityLabel = "Settings button"
         leftBarButtonItem.isAccessibilityElement = true
         navigationItem.leftBarButtonItem = leftBarButtonItem
+        
         // Right bar button item - search button
         let rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .search, target: self, action: #selector(showSearchUI))
         rightBarButtonItem.accessibilityLabel = "Search button"

Session/Home/Message Requests/MessageRequestsViewController.swift

@@ -63,23 +63,16 @@ class MessageRequestsViewController: BaseVC, UITableViewDelegate, UITableViewDat
         return result
     }()
     
-    private lazy var clearAllButton: UIButton = {
+    private lazy var clearAllButton: Button = {
-        let result: UIButton = UIButton()
+        let result: Button = Button(style: .destructiveOutline, size: .large)
         result.translatesAutoresizingMaskIntoConstraints = false
-        result.clipsToBounds = true
-        result.titleLabel?.font = UIFont.boldSystemFont(ofSize: 18)
         result.setTitle(NSLocalizedString("MESSAGE_REQUESTS_CLEAR_ALL", comment: ""), for: .normal)
-        result.setTitleColor(Colors.destructive, for: .normal)
         result.setBackgroundImage(
             Colors.destructive
                 .withAlphaComponent(isDarkMode ? 0.2 : 0.06)
                 .toImage(isDarkMode: isDarkMode),
             for: .highlighted
         )
-        result.isHidden = true
-        result.layer.cornerRadius = (NewConversationButtonSet.collapsedButtonSize / 2)
-        result.layer.borderColor = Colors.destructive.cgColor
-        result.layer.borderWidth = 1.5
         result.addTarget(self, action: #selector(clearAllTapped), for: .touchUpInside)
         
         return result
@@ -163,10 +156,11 @@ class MessageRequestsViewController: BaseVC, UITableViewDelegate, UITableViewDat
             
             clearAllButton.centerXAnchor.constraint(equalTo: view.centerXAnchor),
             clearAllButton.bottomAnchor.constraint(
-                equalTo: view.bottomAnchor,
+                equalTo: view.safeAreaLayoutGuide.bottomAnchor,
-                constant: -Values.newConversationButtonBottomOffset // Negative due to how the constraint is set up
+                constant: -Values.largeSpacing
             ),
-            clearAllButton.widthAnchor.constraint(equalToConstant: 155),
+            // Note: The '182' is to match the 'Next' button on the New DM page (which doesn't have a fixed width)
+            clearAllButton.widthAnchor.constraint(equalToConstant: 182),
             clearAllButton.heightAnchor.constraint(equalToConstant: NewConversationButtonSet.collapsedButtonSize)
         ])
     }

Session/Home/Views/MessageRequestsCell.swift

@@ -76,7 +76,7 @@ class MessageRequestsCell: UITableViewCell {
     }()
     
     private func setUpViewHierarchy() {
-        backgroundColor = Colors.cellBackground
+        backgroundColor = Colors.cellPinned
         selectedBackgroundView = UIView()
         selectedBackgroundView?.backgroundColor = Colors.cellSelected
         

Session/Settings/SettingsVC.swift

@@ -139,7 +139,7 @@ final class SettingsVC : BaseVC, AvatarViewHelperDelegate {
         setUpNavBarStyle()
         setNavBarTitle(NSLocalizedString("vc_settings_title", comment: ""))
         // Navigation bar buttons
-        let backButton = UIBarButtonItem(title: "Back", style: .plain, target: nil, action: nil)
+        let backButton = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
         backButton.tintColor = Colors.text
         navigationItem.backBarButtonItem = backButton
         updateNavigationBarButtons()
@@ -254,8 +254,6 @@ final class SettingsVC : BaseVC, AvatarViewHelperDelegate {
         pathStatusView.pin(.leading, to: .trailing, of: pathButton.titleLabel!, withInset: Values.smallSpacing)
         pathStatusView.autoVCenterInSuperview()
         
-        pathButton.titleEdgeInsets = UIEdgeInsets(top: 0, leading: 0, bottom: 0, trailing: Values.smallSpacing)
-        
         return [
             getSeparator(),
             pathButton,

Session/Shared/ConversationCell.swift

@@ -358,15 +358,20 @@ final class ConversationCell : UITableViewCell {
         if threadViewModel.isGroupThread {
             if threadViewModel.name.isEmpty {
                 return "Unknown Group"
-            } else {
+            }
+            else {
                 return threadViewModel.name
             }
-        } else {
+        }
+        else {
             if threadViewModel.threadRecord.isNoteToSelf() {
                 return NSLocalizedString("NOTE_TO_SELF", comment: "")
-            } else {
+            }
-                let hexEncodedPublicKey = threadViewModel.contactSessionID!
+            else {
-                return Storage.shared.getContact(with: hexEncodedPublicKey)?.displayName(for: .regular) ?? hexEncodedPublicKey
+                let hexEncodedPublicKey: String = threadViewModel.contactSessionID!
+                let displayName: String = (Storage.shared.getContact(with: hexEncodedPublicKey)?.displayName(for: .regular) ?? hexEncodedPublicKey)
+                let middleTruncatedHexKey: String = "\(hexEncodedPublicKey.prefix(4))...\(hexEncodedPublicKey.suffix(4))"
+                return (displayName == hexEncodedPublicKey ? middleTruncatedHexKey : displayName)
             }
         }
     }

SessionUIKit/Components/Button.swift

@@ -6,7 +6,7 @@ public final class Button : UIButton {
     private var heightConstraint: NSLayoutConstraint!
     
     public enum Style {
-        case unimportant, regular, prominentOutline, prominentFilled, regularBorderless
+        case unimportant, regular, prominentOutline, prominentFilled, regularBorderless, destructiveOutline
     }
     
     public enum Size {
@@ -41,6 +41,7 @@ public final class Button : UIButton {
         case .prominentOutline: fillColor = UIColor.clear
         case .prominentFilled: fillColor = isLightMode ? Colors.text : Colors.accent
         case .regularBorderless: fillColor = UIColor.clear
+        case .destructiveOutline: fillColor = UIColor.clear
         }
         let borderColor: UIColor
         switch style {
@@ -49,6 +50,7 @@ public final class Button : UIButton {
         case .prominentOutline: borderColor = isLightMode ? Colors.text : Colors.accent
         case .prominentFilled: borderColor = isLightMode ? Colors.text : Colors.accent
         case .regularBorderless: borderColor = UIColor.clear
+        case .destructiveOutline: borderColor = Colors.destructive
         }
         let textColor: UIColor
         switch style {
@@ -57,6 +59,7 @@ public final class Button : UIButton {
         case .prominentOutline: textColor = isLightMode ? Colors.text : Colors.accent
         case .prominentFilled: textColor = isLightMode ? UIColor.white : Colors.text
         case .regularBorderless: textColor = Colors.text
+        case .destructiveOutline: textColor = Colors.destructive
         }
         let height: CGFloat
         switch size {

SignalUtilitiesKit/Utilities/UIViewController+Utilities.swift

@@ -28,7 +28,7 @@ public final class ViewControllerUtilities : NSObject {
         }
         // Set up back button
         if hasCustomBackButton {
-            let backButton = UIBarButtonItem(title: "Back", style: .plain, target: nil, action: nil)
+            let backButton = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)
             backButton.tintColor = Colors.text
             vc.navigationItem.backBarButtonItem = backButton
         }