implement animation for selected search result message flickering

Session/Conversations/ConversationVC.swift

@@ -7,7 +7,8 @@
 final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversationSettingsViewDelegate, ConversationSearchControllerDelegate, UITableViewDataSource, UITableViewDelegate {
     let isUnsendRequestsEnabled = true // Set to true once unsend requests are done on all platforms
     let thread: TSThread
-    let focusedMessageID: String? // This isn't actually used ATM
+    let focusedMessageID: String? // This is used for global search
+    var focusedMessageIndexPath: IndexPath?
     var unreadViewItems: [ConversationViewItem] = []
     var scrollButtonConstraint: NSLayoutConstraint?
     // Search
@@ -236,6 +237,9 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
             // unreadIndicatorIndex is calculated during loading of the viewItems, so it's
             // supposed to be accurate.
             DispatchQueue.main.async {
+                if let focusedMessageID = self.focusedMessageID {
+                    self.scrollToInteraction(with: focusedMessageID, isAnimated: false, highlighted: true)
+                } else {
                     let firstUnreadMessageIndex = self.viewModel.viewState.unreadIndicatorIndex?.intValue
                         ?? (self.viewItems.count - self.unreadViewItems.count)
                     if unreadCount > 0, let viewItem = self.viewItems[ifValid: firstUnreadMessageIndex], let interactionID = viewItem.interaction.uniqueId {
@@ -244,6 +248,7 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
                     } else {
                         self.scrollToBottom(isAnimated: false)
                     }
+                }
                 self.scrollButton.alpha = self.getScrollButtonOpacity()
             }
         }
@@ -251,6 +256,7 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
     
     override func viewDidAppear(_ animated: Bool) {
         super.viewDidAppear(animated)
+        highlightFocusedMessageIfNeeded()
         didFinishInitialLayout = true
         markAllAsRead()
     }
@@ -313,6 +319,13 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
         }
     }
     
+    private func highlightFocusedMessageIfNeeded() {
+        if let indexPath = focusedMessageIndexPath, let cell = messagesTableView.cellForRow(at: indexPath) as? VisibleMessageCell {
+            cell.highlithed()
+            focusedMessageIndexPath = nil
+        }
+    }
+    
     @objc func handleKeyboardWillChangeFrameNotification(_ notification: Notification) {
         guard let newHeight = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue.size.height else { return }
         if (newHeight > 0 && baselineKeyboardHeight == 0) {
@@ -617,8 +630,11 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
         scrollToInteraction(with: interactionID)
     }
     
-    func scrollToInteraction(with interactionID: String, position: UITableView.ScrollPosition = .middle, isAnimated: Bool = true) {
+    func scrollToInteraction(with interactionID: String, position: UITableView.ScrollPosition = .middle, isAnimated: Bool = true, highlighted: Bool = false) {
         guard let indexPath = viewModel.ensureLoadWindowContainsInteractionId(interactionID) else { return }
         messagesTableView.scrollToRow(at: indexPath, at: position, animated: isAnimated)
+        if highlighted, let _ = messagesTableView.cellForRow(at: indexPath) as? VisibleMessageCell {
+            focusedMessageIndexPath = indexPath
+        }
     }
 }

Session/Conversations/Message Cells/VisibleMessageCell.swift

@@ -65,7 +65,7 @@ final class VisibleMessageCell : MessageCell, LinkPreviewViewDelegate {
     
     lazy var bubbleView: UIView = {
         let result = UIView()
-        result.layer.cornerRadius = VisibleMessageCell.smallCornerRadius
+        result.layer.cornerRadius = VisibleMessageCell.largeCornerRadius
         return result
     }()
     
@@ -431,10 +431,12 @@ final class VisibleMessageCell : MessageCell, LinkPreviewViewDelegate {
     }
     
     private func updateBubbleViewCorners() {
-        let maskPath = UIBezierPath(roundedRect: bubbleView.bounds, byRoundingCorners: getCornersToRound(),
+        let cornersToRound = getCornersToRound()
+        let maskPath = UIBezierPath(roundedRect: bubbleView.bounds, byRoundingCorners: cornersToRound,
             cornerRadii: CGSize(width: VisibleMessageCell.largeCornerRadius, height: VisibleMessageCell.largeCornerRadius))
         bubbleViewMaskLayer.path = maskPath.cgPath
-        bubbleView.layer.mask = bubbleViewMaskLayer
+        bubbleView.layer.cornerRadius = VisibleMessageCell.largeCornerRadius
+        bubbleView.layer.maskedCorners = getCornerMask(from: cornersToRound)
     }
     
     override func prepareForReuse() {
@@ -470,6 +472,16 @@ final class VisibleMessageCell : MessageCell, LinkPreviewViewDelegate {
             return abs(v.x) > abs(v.y) // It has to be more horizontal than vertical
         } else {
             return true
+            
+        }
+    }
+    
+    func highlithed() {
+        bubbleView.setShadow(radius: 6, opacity: 1, offset: .zero, color: Colors.accent.cgColor)
+        DispatchQueue.main.async {
+            UIView.animate(withDuration: 2) {
+                self.bubbleView.setShadow(radius: 0, opacity: 0, offset: .zero, color: UIColor.clear.cgColor)
+            }
         }
     }
     
@@ -571,6 +583,19 @@ final class VisibleMessageCell : MessageCell, LinkPreviewViewDelegate {
         return result
     }
     
+    private func getCornerMask(from rectCorner: UIRectCorner) -> CACornerMask {
+        var cornerMask = CACornerMask()
+        if rectCorner.contains(.allCorners) {
+            cornerMask = [ .layerMaxXMinYCorner, .layerMinXMinYCorner, .layerMaxXMaxYCorner, .layerMinXMaxYCorner]
+        } else {
+            if rectCorner.contains(.topRight) { cornerMask.insert(.layerMaxXMinYCorner) }
+            if rectCorner.contains(.topLeft) { cornerMask.insert(.layerMinXMinYCorner) }
+            if rectCorner.contains(.bottomRight) { cornerMask.insert(.layerMaxXMaxYCorner) }
+            if rectCorner.contains(.bottomLeft) { cornerMask.insert(.layerMinXMaxYCorner) }
+        }
+        return cornerMask
+    }
+    
     private static func getFontSize(for viewItem: ConversationViewItem) -> CGFloat {
         let baselineFontSize = Values.mediumFontSize
         switch viewItem.displayableBodyText?.jumbomojiCount {

Session/Home/GlobalSearch.swift

@@ -156,7 +156,7 @@ extension GlobalSearchViewController {
         case .messages:
             let sectionResults = searchResultSet.messages
             guard let searchResult = sectionResults[safe: indexPath.row], let threadId = searchResult.thread.threadRecord.uniqueId, let thread = TSThread.fetch(uniqueId: threadId) else { return }
-            show(thread, highlightedMessageID: nil, animated: true)
+            show(thread, highlightedMessageID: searchResult.messageId, animated: true)
         }
         tableView.deselectRow(at: indexPath, animated: true)
     }

Session/Shared/BaseVC.swift

@@ -82,7 +82,7 @@ class BaseVC : UIViewController {
         headingImageView.image = UIImage(named: "SessionHeading")?.withRenderingMode(.alwaysTemplate)
         headingImageView.contentMode = .scaleAspectFit
         headingImageView.set(.width, to: 150)
-        headingImageView.set(.height, to: Values.largeFontSize)
+        headingImageView.set(.height, to: 18)
         navigationItem.titleView = headingImageView
     }
 

SignalUtilitiesKit/Utilities/UIView+OWS.swift

@@ -120,11 +120,11 @@ public extension UIView {
         return constraints
     }
 
-    func setShadow(radius: CGFloat = 2.0, opacity: CGFloat = 0.66, offset: CGPoint = .zero, color: CGColor = UIColor.black.cgColor) {
-        layer.shadowColor = UIColor.black.cgColor
-        layer.shadowRadius = 2.0
-        layer.shadowOpacity = 0.66
-        layer.shadowOffset = .zero
+    func setShadow(radius: CGFloat = 2.0, opacity: Float = 0.66, offset: CGSize = .zero, color: CGColor = UIColor.black.cgColor) {
+        layer.shadowColor = color
+        layer.shadowRadius = radius
+        layer.shadowOpacity = opacity
+        layer.shadowOffset = offset
     }
 }