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@@ -60,6 +60,13 @@ class ChatViewController: MessagesViewController {
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var previewView: UIView?
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var previewController: PreviewController?
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+ var emptyStateView: PaddingLabel = {
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+ let view = PaddingLabel()
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+ view.backgroundColor = DcColors.systemMessageBackgroundColor
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+ view.textColor = DcColors.defaultTextColor
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+ return view
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+ }()
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+
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override var inputAccessoryView: UIView? {
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if disableWriting {
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return nil
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@@ -89,6 +96,7 @@ class ChatViewController: MessagesViewController {
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return
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}
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configureMessageCollectionView()
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+ configureEmptyStateView()
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if !disableWriting {
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configureMessageInputBar()
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@@ -99,6 +107,14 @@ class ChatViewController: MessagesViewController {
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loadFirstMessages()
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}
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+ private func configureEmptyStateView() {
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+ view.addSubview(emptyStateView)
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+ view.addConstraints([emptyStateView.constraintCenterYTo(view),
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+ emptyStateView.constraintCenterXTo(view),
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+ emptyStateView.constraintAlignLeadingTo(view, paddingLeading: 40),
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+ emptyStateView.constraintAlignTrailingTo(view, paddingTrailing: 40)])
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+ }
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+
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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// this will be removed in viewWillDisappear
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@@ -236,6 +252,7 @@ class ChatViewController: MessagesViewController {
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if self.isLastSectionVisible() {
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self.messagesCollectionView.scrollToBottom(animated: true)
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}
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+ self.showEmptyStateView(self.messageList.isEmpty)
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}
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}
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}
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@@ -247,7 +264,36 @@ class ChatViewController: MessagesViewController {
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self.messagesCollectionView.reloadData()
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self.refreshControl.endRefreshing()
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self.messagesCollectionView.scrollToBottom(animated: false)
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+ self.showEmptyStateView(self.messageList.isEmpty)
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+ }
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+ }
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+ }
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+
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+ private func showEmptyStateView(_ show: Bool) {
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+ if show {
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+ let dcChat = DcChat(id: chatId)
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+ if chatId == DC_CHAT_ID_DEADDROP {
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+ if DcConfig.showEmails != DC_SHOW_EMAILS_ALL {
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+ emptyStateView.text = String.localized("chat_no_contact_requests")
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+ } else {
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+ emptyStateView.text = String.localized("chat_no_messages")
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+ }
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+ } else if dcChat.isGroup {
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+ if dcChat.isUnpromoted {
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+ emptyStateView.text = String.localized("chat_new_group_hint")
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+ } else {
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+ emptyStateView.text = String.localized("chat_no_messages")
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+ }
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+ } else if dcChat.isSelfTalk {
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+ emptyStateView.text = String.localized("saved_messages_explain")
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+ } else if dcChat.isDeviceTalk {
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+ emptyStateView.text = String.localized("device_talk_explain")
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+ } else {
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+ emptyStateView.text = String.localizedStringWithFormat(String.localized("chat_no_messages_hint"), dcChat.name, dcChat.name)
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}
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+ emptyStateView.isHidden = false
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+ } else {
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+ emptyStateView.isHidden = true
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}
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}
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@@ -769,6 +815,7 @@ extension ChatViewController: MessagesDataSource {
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func insertMessage(_ message: DcMsg) {
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dc_markseen_msgs(mailboxPointer, UnsafePointer([UInt32(message.id)]), 1)
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messageList.append(message)
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+ emptyStateView.isHidden = true
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// Reload last section to update header/footer labels and insert a new one
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messagesCollectionView.performBatchUpdates({
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messagesCollectionView.insertSections([messageList.count - 1])
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cyberta