expand & collapse emoji reacts

Session/Conversations/ConversationVC.swift

@@ -762,6 +762,13 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
         return UITableView.automaticDimension
     }
     
+    func needsLayout() {
+        UIView.setAnimationsEnabled(false)
+        messagesTableView.beginUpdates()
+        messagesTableView.endUpdates()
+        UIView.setAnimationsEnabled(true)
+    }
+
     func getMediaCache() -> NSCache<NSString, AnyObject> {
         return mediaCache
     }

Session/Conversations/Input View/InputView.swift

@@ -337,7 +337,7 @@ final class InputView : UIView, InputViewButtonDelegate, InputTextViewDelegate,
         inputTextView.resignFirstResponder()
     }
 
-    func handleLongPress() {
+    func handleLongPress(_ gestureRecognizer: UITapGestureRecognizer) {
         // Not relevant in this case
     }
 

Session/Conversations/Message Cells/Content Views/ReactionContainerView.swift

@@ -1,18 +1,40 @@
 
 final class ReactionContainerView : UIView {
-    private lazy var containerView: UIStackView = {
+    private lazy var mainStackView: UIStackView = {
-        let result = UIStackView()
+        let result = UIStackView(arrangedSubviews: [ reactionContainerView ])
         result.axis = .vertical
         result.spacing = Values.smallSpacing
         result.alignment = .center
         return result
     }()
     
+    private lazy var reactionContainerView: UIStackView = {
+        let result = UIStackView()
+        result.axis = .vertical
+        result.spacing = Values.smallSpacing
+        result.alignment = .leading
+        return result
+    }()
+    
     private var showingAllReactions = false
     
     var reactions: [(String, (Int, Bool))] = []
     var reactionViews: [ReactionView] = []
     var expandButton: ExpandingReactionButton?
+    var collapseButton: UIStackView = {
+        let arrow = UIImageView(image: UIImage(named: "ic_chevron_up")?.resizedImage(to: CGSize(width: 15, height: 13))?.withRenderingMode(.alwaysTemplate))
+        arrow.tintColor = Colors.text
+        
+        let textLabel = UILabel()
+        textLabel.text = "Show less"
+        textLabel.font = .systemFont(ofSize: Values.verySmallFontSize)
+        textLabel.textColor = Colors.text
+        
+        let result = UIStackView(arrangedSubviews: [ UIView.hStretchingSpacer(), arrow, textLabel, UIView.hStretchingSpacer() ])
+        result.spacing = Values.verySmallSpacing
+        result.alignment = .center
+        return result
+    }()
     
     // MARK: Lifecycle
     init() {
@@ -29,14 +51,21 @@ final class ReactionContainerView : UIView {
     }
     
     private func setUpViewHierarchy() {
-        addSubview(containerView)
+        addSubview(mainStackView)
-        containerView.pin(to: self)
+        mainStackView.pin(to: self)
     }
     
     public func update(_ reactions: [(String, (Int, Bool))]) {
         self.reactions = reactions
         prepareForUpdate()
+        if showingAllReactions {
+            updateAllReactions()
+        } else {
+            updateCollapsedReactions(reactions)
+        }
+    }
     
+    private func updateCollapsedReactions(_ reactions: [(String, (Int, Bool))]) {
         let stackView = UIStackView()
         stackView.axis = .horizontal
         stackView.spacing = Values.smallSpacing
@@ -64,14 +93,28 @@ final class ReactionContainerView : UIView {
         } else {
             expandButton = nil
         }
-        containerView.addArrangedSubview(stackView)
+        reactionContainerView.addArrangedSubview(stackView)
+    }
+    
+    private func updateAllReactions() {
+        var reactions = self.reactions
+        while reactions.count > 0 {
+            var line: [(String, (Int, Bool))] = []
+            while reactions.count > 0 && line.count < 5 {
+                line.append(reactions.removeFirst())
+            }
+            updateCollapsedReactions(line)
+        }
+        mainStackView.addArrangedSubview(collapseButton)
     }
     
     private func prepareForUpdate() {
-        for subview in containerView.arrangedSubviews {
+        for subview in reactionContainerView.arrangedSubviews {
-            containerView.removeArrangedSubview(subview)
+            reactionContainerView.removeArrangedSubview(subview)
             subview.removeFromSuperview()
         }
+        mainStackView.removeArrangedSubview(collapseButton)
+        collapseButton.removeFromSuperview()
         reactionViews = []
     }
     
@@ -80,6 +123,12 @@ final class ReactionContainerView : UIView {
         showingAllReactions = true
         update(reactions)
     }
+    
+    public func showLessEmojis() {
+        guard showingAllReactions else { return }
+        showingAllReactions = false
+        update(reactions)
+    }
 }
 
 

Session/Conversations/Message Cells/MessageCell.swift

@@ -82,4 +82,5 @@ protocol MessageCellDelegate : AnyObject {
     func showUserDetails(for sessionID: String)
     func quickReact(_ viewItem: ConversationViewItem, with emoji: String)
     func cancelReact(_ viewItem: ConversationViewItem, for emoji: String)
+    func needsLayout()
 }

Session/Conversations/Message Cells/VisibleMessageCell.swift

@@ -533,10 +533,22 @@ final class VisibleMessageCell : MessageCell, LinkPreviewViewDelegate {
         }
     }
     
-    @objc func handleLongPress() {
+    @objc func handleLongPress(_ gestureRecognizer: UITapGestureRecognizer) {
         guard let viewItem = viewItem else { return }
+        let location = gestureRecognizer.location(in: self)
+        if reactionContainerView.frame.contains(location) {
+            let convertedLocation = reactionContainerView.convert(location, from: self)
+            for reactionView in reactionContainerView.reactionViews {
+                if reactionView.frame.contains(convertedLocation) {
+                    // TODO: Show react list
+                    print("Ryan Test: long press on emoji.")
+                    break
+                }
+            }
+        } else {
             delegate?.handleViewItemLongPressed(viewItem)
         }
+    }
 
     @objc private func handleTap(_ gestureRecognizer: UITapGestureRecognizer) {
         guard let viewItem = viewItem else { return }
@@ -561,8 +573,12 @@ final class VisibleMessageCell : MessageCell, LinkPreviewViewDelegate {
                 }
             }
             if let expandButton = reactionContainerView.expandButton, expandButton.frame.contains(convertedLocation) {
-                // TODO: show all emojis
+                reactionContainerView.showAllEmojis()
-                reactionContainerView.
+                delegate?.needsLayout()
+            }
+            if reactionContainerView.collapseButton.frame.contains(convertedLocation) {
+                reactionContainerView.showLessEmojis()
+                delegate?.needsLayout()
             }
         } else {
             delegate?.handleViewItemTapped(viewItem, gestureRecognizer: gestureRecognizer)

Session/Conversations/Views & Modals/BodyTextView.swift

@@ -34,8 +34,8 @@ final class BodyTextView : UITextView {
         addGestureRecognizer(doubleTapGestureRecognizer)
     }
     
-    @objc private func handleLongPress() {
+    @objc private func handleLongPress(_ gestureRecognizer: UITapGestureRecognizer) {
-        snDelegate.handleLongPress()
+        snDelegate.handleLongPress(gestureRecognizer)
     }
     
     @objc private func handleDoubleTap() {
@@ -45,5 +45,5 @@ final class BodyTextView : UITextView {
 
 protocol BodyTextViewDelegate {
     
-    func handleLongPress()
+    func handleLongPress(_ gestureRecognizer: UITapGestureRecognizer)
 }