Merge pull request #541 from Adamant-im/dev/trello.com/c/j08aAwNP

[trello.com/c/j08aAwNP] Feat: Scroll Up button in the chat list

Adamant.xcodeproj/project.pbxproj

@@ -372,7 +372,7 @@
 		93A118532993241D00E144CC /* ChatMessagesListFactory.swift in Sources */ = {isa = PBXBuildFile; fileRef = 93A118522993241D00E144CC /* ChatMessagesListFactory.swift */; };
 		93A18C862AAEACC100D0AB98 /* AdamantWalletFactoryCompose.swift in Sources */ = {isa = PBXBuildFile; fileRef = 93A18C852AAEACC100D0AB98 /* AdamantWalletFactoryCompose.swift */; };
 		93A18C892AAEAE7700D0AB98 /* WalletFactory.swift in Sources */ = {isa = PBXBuildFile; fileRef = 93A18C882AAEAE7700D0AB98 /* WalletFactory.swift */; };
-		93A91FD1297972B7001DB1F8 /* ChatScrollDownButton.swift in Sources */ = {isa = PBXBuildFile; fileRef = 93A91FD0297972B7001DB1F8 /* ChatScrollDownButton.swift */; };
+		93A91FD1297972B7001DB1F8 /* ChatScrollButton.swift in Sources */ = {isa = PBXBuildFile; fileRef = 93A91FD0297972B7001DB1F8 /* ChatScrollButton.swift */; };
 		93A91FD329799298001DB1F8 /* ChatStartPosition.swift in Sources */ = {isa = PBXBuildFile; fileRef = 93A91FD229799298001DB1F8 /* ChatStartPosition.swift */; };
 		93ADE0712ACA66AF008ED641 /* VibrationSelectionViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 93ADE06E2ACA66AF008ED641 /* VibrationSelectionViewModel.swift */; };
 		93ADE0722ACA66AF008ED641 /* VibrationSelectionView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 93ADE06F2ACA66AF008ED641 /* VibrationSelectionView.swift */; };
@@ -1037,7 +1037,7 @@
 		93A118522993241D00E144CC /* ChatMessagesListFactory.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatMessagesListFactory.swift; sourceTree = "<group>"; };
 		93A18C852AAEACC100D0AB98 /* AdamantWalletFactoryCompose.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AdamantWalletFactoryCompose.swift; sourceTree = "<group>"; };
 		93A18C882AAEAE7700D0AB98 /* WalletFactory.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WalletFactory.swift; sourceTree = "<group>"; };
-		93A91FD0297972B7001DB1F8 /* ChatScrollDownButton.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatScrollDownButton.swift; sourceTree = "<group>"; };
+		93A91FD0297972B7001DB1F8 /* ChatScrollButton.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatScrollButton.swift; sourceTree = "<group>"; };
 		93A91FD229799298001DB1F8 /* ChatStartPosition.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatStartPosition.swift; sourceTree = "<group>"; };
 		93ADE06E2ACA66AF008ED641 /* VibrationSelectionViewModel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = VibrationSelectionViewModel.swift; sourceTree = "<group>"; };
 		93ADE06F2ACA66AF008ED641 /* VibrationSelectionView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = VibrationSelectionView.swift; sourceTree = "<group>"; };
@@ -2026,7 +2026,7 @@
 				413AD21A29CDDD750025F255 /* ChatReply */,
 				9377FBE0296C2AB700C9211B /* ChatTransaction */,
 				938F7D652955C966001915CA /* ChatInputBar.swift */,
-				93A91FD0297972B7001DB1F8 /* ChatScrollDownButton.swift */,
+				93A91FD0297972B7001DB1F8 /* ChatScrollButton.swift */,
 				9371130E2996EDA900F64CF9 /* ChatRefreshMock.swift */,
 				93996A962968209C008D080B /* ChatMessagesCollection.swift */,
 				9382F61229DEC0A3005E6216 /* ChatModelView.swift */,
@@ -3580,7 +3580,7 @@
 				E9FAE5DA203DBFEF008D3A6B /* Comparable+clamped.swift in Sources */,
 				93A91FD329799298001DB1F8 /* ChatStartPosition.swift in Sources */,
 				3A2F55F92AC6F308000A3F26 /* CoinTransaction+CoreDataClass.swift in Sources */,
-				93A91FD1297972B7001DB1F8 /* ChatScrollDownButton.swift in Sources */,
+				93A91FD1297972B7001DB1F8 /* ChatScrollButton.swift in Sources */,
 				3AA3880A2B69173500125684 /* DashNetworkInfoDTO.swift in Sources */,
 				41C1698C29E7F34900FEB3CB /* RichTransactionReplyService.swift in Sources */,
 				935F53D629BE8F7400779492 /* TransactionStatusPublisher.swift in Sources */,

Adamant/Modules/Chat/View/ChatViewController.swift

@@ -738,8 +738,8 @@ private extension ChatViewController {
 // MARK: Making entities
 
 private extension ChatViewController {
-    func makeScrollDownButton() -> ChatScrollDownButton {
-        let button = ChatScrollDownButton()
+    func makeScrollDownButton() -> ChatScrollButton {
+        let button = ChatScrollButton(position: .down)
         button.action = { [weak self] in
             guard let id = self?.viewModel.getTempOffset(visibleIndex: self?.messagesCollectionView.indexPathsForVisibleItems.last?.section)
             else {

Adamant/Modules/Chat/View/Subviews/ChatScrollDownButton.swift → Adamant/Modules/Chat/View/Subviews/ChatScrollButton.swift

@@ -9,29 +9,43 @@
 import UIKit
 import SnapKit
 
-final class ChatScrollDownButton: UIView {
+enum Position {
+    case up
+    case down
+}
+
+final class ChatScrollButton: UIView {
     private lazy var button: UIButton = {
         let button = UIButton(type: .custom)
-        button.setImage(.asset(named: "ScrollDown"), for: .normal)
         button.alpha = 0.5
+        switch position {
+        case .up:
+            button.setImage(.asset(named: "scrollUp"), for: .normal)
+        case .down:
+            button.setImage(.asset(named: "ScrollDown"), for: .normal)
+        }
         button.addTarget(self, action: #selector(onTap), for: .touchUpInside)
         return button
     }()
 
+    private let position: Position
+
     var action: (() -> Void)?
 
-    override init(frame: CGRect) {
+    init(frame: CGRect = .zero, position: Position) {
+        self.position = position
         super.init(frame: frame)
         configure()
     }
 
     required init?(coder: NSCoder) {
+        self.position = .down
         super.init(coder: coder)
         configure()
     }
 }
 
-private extension ChatScrollDownButton {
+private extension ChatScrollButton {
     func configure() {
         addSubview(button)
         button.snp.makeConstraints {

Adamant/Modules/ChatsList/ChatListViewController.swift

@@ -62,6 +62,8 @@ final class ChatListViewController: KeyboardObservingViewController {
     @IBOutlet weak var tableView: UITableView!
     @IBOutlet weak var newChatButton: UIBarButtonItem!
 
+    private lazy var scrollUpButton = ChatScrollButton(position: .up)
+
     // MARK: Properties
     var chatsController: NSFetchedResultsController<Chatroom>?
     var unreadController: NSFetchedResultsController<ChatTransaction>?
@@ -187,7 +189,8 @@ final class ChatListViewController: KeyboardObservingViewController {
         busyIndicatorView.layer.cornerRadius = 14
         busyIndicatorView.clipsToBounds = true
 
-        addObservers()        
+        configureScrollUpButton()
+        addObservers()
         setColors()
     }
 
@@ -259,6 +262,22 @@ final class ChatListViewController: KeyboardObservingViewController {
         tableView.tableHeaderView = UIView()
     }
 
+    func configureScrollUpButton() {
+        view.addSubview(scrollUpButton)
+
+        scrollUpButton.isHidden = true
+
+        scrollUpButton.action = { [weak self] in
+            self?.tableView.scrollToRow(at: IndexPath(row: .zero, section: .zero), at: .top, animated: true)
+        }
+
+        scrollUpButton.snp.makeConstraints { make in
+            make.trailing.equalToSuperview().offset(-20)
+            make.top.equalTo(view.safeAreaLayoutGuide).offset(20)
+            make.size.equalTo(30)
+        }
+    }
+
     // MARK: Add Observers
 
     private func addObservers() {
@@ -577,6 +596,11 @@ extension ChatListViewController: UITableViewDelegate, UITableViewDataSource {
             }
         }
     }
+
+    func scrollViewDidScroll(_ scrollView: UIScrollView) {
+        let offsetY = scrollView.contentOffset.y + scrollView.safeAreaInsets.top
+        scrollUpButton.isHidden = offsetY < cellHeight * 0.75
+    }
 }
 
 // MARK: - UITableView Cells

CommonKit/Sources/CommonKit/Assets/Shared.xcassets/Buttons/scrollUp.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "filename" : "scrollUp.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "[email protected]",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "[email protected]",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}