Link Preview error state and UI standardisation

Added a couple of error states for Link Preview loading.
Standardised the UI creation code style.
Removed some debug and redundant code.

Session/Meta/Translations/de.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Mit Session teilen";
 "vc_share_loading_message" = "Anlagen werden vorbereitet...";
 "vc_share_sending_message" = "Wird gesendet ...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Gruppeneinladung öffnen";
 "vc_conversation_settings_invite_button_title" = "Mitglieder hinzufügen";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/en.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Share to Session";
 "vc_share_loading_message" = "Preparing attachments...";
 "vc_share_sending_message" = "Sending...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Open group invitation";
 "vc_conversation_settings_invite_button_title" = "Add Members";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/es.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Compartir en Session";
 "vc_share_loading_message" = "Preparando archivos adjuntos...";
 "vc_share_sending_message" = "Enviando...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Abrir invitación de grupo";
 "vc_conversation_settings_invite_button_title" = "Añadir Miembros";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/fa.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "اشتراک گذاری با Session";
 "vc_share_loading_message" = "آماده سازی پیوست‌ها...";
 "vc_share_sending_message" = "در حال ارسال...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Open group invitation";
 "vc_conversation_settings_invite_button_title" = "Add Members";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/fi.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Jaa Sessioniin";
 "vc_share_loading_message" = "Valmistellaan liitteitä...";
 "vc_share_sending_message" = "Lähetetään...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Avaa ryhmäkutsu";
 "vc_conversation_settings_invite_button_title" = "Lisää jäseniä";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/fr.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Partager en Session";
 "vc_share_loading_message" = "Préparation des pièces jointes ...";
 "vc_share_sending_message" = "Envoi...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Invitation à un groupe ouvert";
 "vc_conversation_settings_invite_button_title" = "Ajouter des membres";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/hi.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "सत्र में साझा करें";
 "vc_share_loading_message" = "अटैचमेंट तैयार किए जा रहे हैं...";
 "vc_share_sending_message" = "भेजा जा रहा है...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "ग्रुप आमंत्रण खोलें";
 "vc_conversation_settings_invite_button_title" = "सदस्य जोड़ें";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/hr.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Podijeli sa Session-om";
 "vc_share_loading_message" = "Priprema privitaka...";
 "vc_share_sending_message" = "Slanje...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Otvori pozivnicu za grupu";
 "vc_conversation_settings_invite_button_title" = "Dodaj članove";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/id-ID.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Share to Session";
 "vc_share_loading_message" = "Preparing attachments...";
 "vc_share_sending_message" = "Sending...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Open group invitation";
 "vc_conversation_settings_invite_button_title" = "Add Members";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/it.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Condividi con Session";
 "vc_share_loading_message" = "Preparazione allegati...";
 "vc_share_sending_message" = "Invio...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Apri invito di gruppo";
 "vc_conversation_settings_invite_button_title" = "Aggiungi membri";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/ja.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Sessionと共有";
 "vc_share_loading_message" = "添付ファイルを準備しています...";
 "vc_share_sending_message" = "送信中…";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "公開グループからの招待";
 "vc_conversation_settings_invite_button_title" = "メンバーを追加する";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/nl.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Delen naar de Session";
 "vc_share_loading_message" = "Bijlagen voorbereiden...";
 "vc_share_sending_message" = "Aan het verzenden...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Open groepsuitnodiging";
 "vc_conversation_settings_invite_button_title" = "Voeg deelnemers toe";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/pl.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Udostępnij w Session";
 "vc_share_loading_message" = "Przygotowywanie załączników...";
 "vc_share_sending_message" = "Wysyłanie...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Otwórz zaproszenie do grupy";
 "vc_conversation_settings_invite_button_title" = "Dodaj użytkowników";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/pt_BR.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Compartilhar no Session";
 "vc_share_loading_message" = "Preparando anexos...";
 "vc_share_sending_message" = "Enviando...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Convite para grupo aberto";
 "vc_conversation_settings_invite_button_title" = "Adicionar Membros";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/ru.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Поделиться в Session";
 "vc_share_loading_message" = "Подготовка вложений...";
 "vc_share_sending_message" = "Отправка...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Открыть приглашение в группу";
 "vc_conversation_settings_invite_button_title" = "Добавить участников";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/si.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Share to Session";
 "vc_share_loading_message" = "Preparing attachments...";
 "vc_share_sending_message" = "Sending...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Open group invitation";
 "vc_conversation_settings_invite_button_title" = "Add Members";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/sk.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Share to Session";
 "vc_share_loading_message" = "Pripravujú sa prílohy...";
 "vc_share_sending_message" = "Odosiela sa...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Otvoriť skupinovú pozvánku";
 "vc_conversation_settings_invite_button_title" = "Pridať členov";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/sv.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Dela i Session";
 "vc_share_loading_message" = "Förbereder bilagor...";
 "vc_share_sending_message" = "Skickar...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Öppen gruppinbjudan";
 "vc_conversation_settings_invite_button_title" = "Lägg till medlemmar";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/th.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "เชิญมาใช้ Session";
 "vc_share_loading_message" = "รวบรวมสิ่งแนบ...";
 "vc_share_sending_message" = "กำลังส่ง...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "การเชิญเข้าร่วมกลุ่ม";
 "vc_conversation_settings_invite_button_title" = "เพิ่มสมาชิก";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/vi-VN.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "Share to Session";
 "vc_share_loading_message" = "Preparing attachments...";
 "vc_share_sending_message" = "Sending...";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "Open group invitation";
 "vc_conversation_settings_invite_button_title" = "Add Members";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/zh-Hant.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "分享至 Session";
 "vc_share_loading_message" = "準備附件中⋯";
 "vc_share_sending_message" = "傳送中⋯";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "打開群組邀請";
 "vc_conversation_settings_invite_button_title" = "新增成員";
 "vc_settings_faq_button_title" = "FAQ";

Session/Meta/Translations/zh_CN.lproj/Localizable.strings

@@ -543,6 +543,9 @@
 "vc_share_title" = "分享到 Session";
 "vc_share_loading_message" = "正在准备附件......";
 "vc_share_sending_message" = "正在发送…";
+"vc_share_link_previews_error" = "Unable to load preview";
+"vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+"vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you share. This can be useful, but Session will need to contact linked websites to generate previews.\n\nYou can enable link previews in Session's settings.";
 "view_open_group_invitation_description" = "打开群组邀请";
 "vc_conversation_settings_invite_button_title" = "添加成员";
 "vc_settings_faq_button_title" = "FAQ";

SignalUtilitiesKit/Media Viewing & Editing/MediaMessageView.swift

@@ -59,7 +59,6 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
 
         createViews()
         
-        backgroundColor = .red
         
         setupLayout()
     }
@@ -78,13 +77,22 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
         stackView.distribution = .equalSpacing
         
         switch mode {
-            case .large, .attachmentApproval: stackView.spacing = 10
+            case .attachmentApproval: stackView.spacing = 2
+            case .large: stackView.spacing = 10
             case .small: stackView.spacing = 5
         }
         
         return stackView
     }()
     
+    private lazy var loadingView: NVActivityIndicatorView = {
+        let view: NVActivityIndicatorView = NVActivityIndicatorView(frame: CGRect.zero, type: .circleStrokeSpin, color: Colors.text, padding: nil)
+        view.translatesAutoresizingMaskIntoConstraints = false
+        view.isHidden = true
+        
+        return view
+    }()
+    
     private lazy var imageView: UIImageView = {
         let view: UIImageView = UIImageView()
         view.translatesAutoresizingMaskIntoConstraints = false
@@ -98,8 +106,6 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
     private lazy var fileTypeImageView: UIImageView = {
         let view: UIImageView = UIImageView()
         view.translatesAutoresizingMaskIntoConstraints = false
-        view.layer.minificationFilter = .trilinear
-        view.layer.magnificationFilter = .trilinear
         
         return view
     }()
@@ -126,8 +132,6 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
         button.clipsToBounds = true
         button.setBackgroundImage(UIColor.white.toImage(), for: .normal)
         button.setBackgroundImage(UIColor.white.darken(by: 0.2).toImage(), for: .highlighted)
-        button.layer.cornerRadius = 30
-        
         button.addTarget(self, action: #selector(audioPlayPauseButtonPressed), for: .touchUpInside)
         
         return button
@@ -136,13 +140,35 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
     private lazy var titleLabel: UILabel = {
         let label: UILabel = UILabel()
         label.translatesAutoresizingMaskIntoConstraints = false
-        label.font = labelFont()
-        label.text = (formattedFileName() ?? formattedFileExtension())
-        label.textColor = controlTintColor
         label.textAlignment = .center
         label.lineBreakMode = .byTruncatingMiddle
+        
+        if let fileName: String = attachment.sourceFilename?.trimmingCharacters(in: .whitespacesAndNewlines), fileName.count > 0 {
+            label.text = fileName
+        }
+        else if let fileExtension: String = attachment.fileExtension {
+            label.text = String(
+                format: "ATTACHMENT_APPROVAL_FILE_EXTENSION_FORMAT".localized(),
+                fileExtension.uppercased()
+            )
+        }
+        
         label.isHidden = ((label.text?.count ?? 0) == 0)
         
+        switch mode {
+            case .attachmentApproval:
+                label.font = UIFont.ows_boldFont(withSize: ScaleFromIPhone5To7Plus(16, 22))
+                label.textColor = Colors.text
+                
+            case .large:
+                label.font = UIFont.ows_regularFont(withSize: ScaleFromIPhone5To7Plus(18, 24))
+                label.textColor = Colors.accent
+                
+            case .small:
+                label.font = UIFont.ows_regularFont(withSize: ScaleFromIPhone5To7Plus(14, 14))
+                label.textColor = Colors.accent
+        }
+        
         return label
     }()
     
@@ -151,13 +177,25 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
         
         let label: UILabel = UILabel()
         label.translatesAutoresizingMaskIntoConstraints = false
-        label.font = labelFont()
         // Format string for file size label in call interstitial view.
         // Embeds: {{file size as 'N mb' or 'N kb'}}.
         label.text = String(format: "ATTACHMENT_APPROVAL_FILE_SIZE_FORMAT".localized(), OWSFormat.formatFileSize(UInt(fileSize)))
-        label.textColor = controlTintColor
         label.textAlignment = .center
         
+        switch mode {
+            case .attachmentApproval:
+                label.font = UIFont.ows_regularFont(withSize: ScaleFromIPhone5To7Plus(12, 18))
+                label.textColor = Colors.pinIcon
+                
+            case .large:
+                label.font = UIFont.ows_regularFont(withSize: ScaleFromIPhone5To7Plus(18, 24))
+                label.textColor = Colors.accent
+                
+            case .small:
+                label.font = UIFont.ows_regularFont(withSize: ScaleFromIPhone5To7Plus(14, 14))
+                label.textColor = Colors.accent
+        }
+        
         return label
     }()
     
@@ -253,8 +291,11 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
 
         audioPlayer = OWSAudioPlayer(mediaUrl: dataUrl, audioBehavior: .playback, delegate: self)
         
-        imageView.image = UIImage(named: "FileLarge")
+        imageView.image = UIImage(named: "FileLarge")?.withRenderingMode(.alwaysTemplate)
-        fileTypeImageView.image = UIImage(named: "table_ic_notification_sound")
+        imageView.tintColor = Colors.text
+        fileTypeImageView.image = UIImage(named: "table_ic_notification_sound")?
+            .withRenderingMode(.alwaysTemplate)
+        fileTypeImageView.tintColor = Colors.text
         setAudioIconToPlay()
         
         self.addSubview(stackView)
@@ -266,38 +307,42 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
         stackView.addArrangedSubview(fileSizeLabel)
         
         imageView.addSubview(fileTypeImageView)
-
+        
+        let imageSize: CGFloat = {
+            switch mode {
+                case .large: return 200
+                case .attachmentApproval: return 150
+                case .small: return 80
+            }
+        }()
+        let audioButtonSize: CGFloat = (imageSize / 2.5)
+        audioPlayPauseButton.layer.cornerRadius = (audioButtonSize / 2)
+        
         NSLayoutConstraint.activate([
             stackView.centerYAnchor.constraint(equalTo: centerYAnchor),
             stackView.widthAnchor.constraint(equalTo: widthAnchor),
             stackView.heightAnchor.constraint(lessThanOrEqualTo: heightAnchor),
             
-            imageView.widthAnchor.constraint(equalToConstant: 150),
+            imageView.widthAnchor.constraint(equalToConstant: imageSize),
-            imageView.heightAnchor.constraint(equalToConstant: 150),
+            imageView.heightAnchor.constraint(equalToConstant: imageSize),
             titleLabel.widthAnchor.constraint(equalTo: stackView.widthAnchor, constant: -(32 * 2)),
             fileSizeLabel.widthAnchor.constraint(equalTo: stackView.widthAnchor, constant: -(32 * 2)),
             
             fileTypeImageView.centerXAnchor.constraint(equalTo: imageView.centerXAnchor),
             fileTypeImageView.centerYAnchor.constraint(
                 equalTo: imageView.centerYAnchor,
-                constant: 25
+                constant: ceil(imageSize * 0.15)
             ),
             fileTypeImageView.widthAnchor.constraint(
                 equalTo: fileTypeImageView.heightAnchor,
                 multiplier: ((fileTypeImageView.image?.size.width ?? 1) / (fileTypeImageView.image?.size.height ?? 1))
             ),
-            fileTypeImageView.widthAnchor.constraint(
+            fileTypeImageView.widthAnchor.constraint(equalTo: imageView.widthAnchor, multiplier: 0.5),
-                equalTo: imageView.widthAnchor, constant: -75
-            ),
             
             audioPlayPauseButton.centerXAnchor.constraint(equalTo: imageView.centerXAnchor),
             audioPlayPauseButton.centerYAnchor.constraint(equalTo: imageView.centerYAnchor),
-            audioPlayPauseButton.widthAnchor.constraint(
+            audioPlayPauseButton.widthAnchor.constraint(equalToConstant: audioButtonSize),
-                equalToConstant: (audioPlayPauseButton.layer.cornerRadius * 2)
+            audioPlayPauseButton.heightAnchor.constraint(equalToConstant: audioButtonSize)
-            ),
-            audioPlayPauseButton.heightAnchor.constraint(
-                equalToConstant: (audioPlayPauseButton.layer.cornerRadius * 2)
-            )
         ])
     }
 
@@ -401,16 +446,12 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
             return
         }
 
-//        let imageView = UIImageView(image: image)
         imageView.image = image
-//        imageView.layer.minificationFilter = .trilinear
-//        imageView.layer.magnificationFilter = .trilinear
         self.addSubview(imageView)
         
         let aspectRatio = image.size.width / image.size.height
         let clampedRatio: CGFloat = CGFloatClamp(aspectRatio, 0.05, 95.0)
         
-//        addSubviewWithScaleAspectFitLayout(view: imageView, aspectRatio: aspectRatio)
         contentView = imageView
         
         // Attachment approval provides it's own play button to keep it
@@ -434,9 +475,6 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
         // at the proper zoom scale.
         if mode != .attachmentApproval {
             self.addSubview(videoPlayButton)
-//            videoPlayButton.autoCenterInSuperview()
-//            videoPlayButton.autoSetDimension(.width, toSize: 72)
-//            videoPlayButton.autoSetDimension(.height, toSize: 72)
             
             NSLayoutConstraint.activate([
                 videoPlayButton.centerXAnchor.constraint(equalTo: centerXAnchor),
@@ -450,139 +488,142 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
     private func createUrlPreview() {
         // If link previews aren't enabled then use a fallback state
         guard let linkPreviewURL: String = OWSLinkPreview.previewURL(forRawBodyText: attachment.text()) else {
-//            "vc_share_link_previews_disabled_title" = "Link Previews Disabled";
+            titleLabel.text = "vc_share_link_previews_disabled_title".localized()
-//            "vc_share_link_previews_disabled_explanation" = "Enabling link previews will show previews for URLs you sshare. This can be useful, but Session will need to contact linked websites to generate previews. You can enable link previews in Session's settings.";
+            titleLabel.isHidden = false
-// TODO: Show "warning" about disabled link previews instead
+            
-            createGenericPreview()
+            fileSizeLabel.text = "vc_share_link_previews_disabled_explanation".localized()
+            fileSizeLabel.textColor = Colors.text
+            fileSizeLabel.numberOfLines = 0
+            
+            self.addSubview(stackView)
+            
+            stackView.addArrangedSubview(titleLabel)
+            stackView.addArrangedSubview(UIView.vSpacer(10))
+            stackView.addArrangedSubview(fileSizeLabel)
+            
+            NSLayoutConstraint.activate([
+                stackView.centerXAnchor.constraint(equalTo: centerXAnchor),
+                stackView.centerYAnchor.constraint(equalTo: centerYAnchor),
+                stackView.widthAnchor.constraint(equalTo: widthAnchor, constant: -(32 * 2)),
+                stackView.heightAnchor.constraint(lessThanOrEqualTo: heightAnchor)
+            ])
             return
         }
         
         linkPreviewInfo = (url: linkPreviewURL, draft: nil)
+
+        stackView.axis = .horizontal
+        stackView.distribution = .fill
         
-        var subviews = [UIView]()
+        imageView.clipsToBounds = true
+        imageView.image = UIImage(named: "Link")?.withTint(Colors.text)
+        imageView.alpha = 0 // Not 'isHidden' because we want it to take up space in the UIStackView
+        imageView.contentMode = .center
+        imageView.backgroundColor = (isDarkMode ? .black : UIColor.black.withAlphaComponent(0.06))
+        imageView.layer.cornerRadius = 8
         
-        let color: UIColor = isLightMode ? .black : .white
+        loadingView.isHidden = false
-        let loadingView = NVActivityIndicatorView(frame: CGRect.zero, type: .circleStrokeSpin, color: color, padding: nil)
-        loadingView.set(.width, to: 24)
-        loadingView.set(.height, to: 24)
         loadingView.startAnimating()
-        subviews.append(loadingView)
-        
-        let imageViewContainer = UIView()
-        imageViewContainer.clipsToBounds = true
-        imageViewContainer.contentMode = .center
-        imageViewContainer.alpha = 0
-        imageViewContainer.layer.cornerRadius = 8
-        subviews.append(imageViewContainer)
         
-        let imageView = createHeroImageView(imageName: "FileLarge")
+        titleLabel.font = .boldSystemFont(ofSize: Values.smallFontSize)
-        imageViewContainer.addSubview(imageView)
-        imageView.pin(to: imageViewContainer)
-
-        let titleLabel = UILabel()
         titleLabel.text = linkPreviewURL
-        titleLabel.textColor = controlTintColor
+        titleLabel.textAlignment = .left
-        titleLabel.font = labelFont()
+        titleLabel.numberOfLines = 2
-        titleLabel.textAlignment = .center
+        titleLabel.isHidden = false
-        titleLabel.lineBreakMode = .byTruncatingMiddle
-        subviews.append(titleLabel)
         
-        let stackView = wrapViewsInVerticalStack(subviews: subviews)
         self.addSubview(stackView)
+        self.addSubview(loadingView)
         
-        titleLabel.autoPinWidthToSuperview(withMargin: 32)
+        stackView.addArrangedSubview(imageView)
+        stackView.addArrangedSubview(UIView.vhSpacer(10, 0))
+        stackView.addArrangedSubview(titleLabel)
+        
+        let imageSize: CGFloat = {
+            switch mode {
+                case .large: return 120
+                case .attachmentApproval, .small: return 80
+            }
+        }()
         
         NSLayoutConstraint.activate([
-            imageView.widthAnchor.constraint(equalToConstant: 80),
+            stackView.centerXAnchor.constraint(equalTo: centerXAnchor),
-            imageView.heightAnchor.constraint(equalToConstant: 80)
+            stackView.centerYAnchor.constraint(equalTo: centerYAnchor),
+            stackView.widthAnchor.constraint(equalTo: widthAnchor, constant: -(32 * 2)),
+            stackView.heightAnchor.constraint(lessThanOrEqualTo: heightAnchor),
+            
+            imageView.widthAnchor.constraint(equalToConstant: imageSize),
+            imageView.heightAnchor.constraint(equalToConstant: imageSize),
+            
+            loadingView.centerXAnchor.constraint(equalTo: imageView.centerXAnchor),
+            loadingView.centerYAnchor.constraint(equalTo: imageView.centerYAnchor),
+            loadingView.widthAnchor.constraint(equalToConstant: ceil(imageSize / 3)),
+            loadingView.heightAnchor.constraint(equalToConstant: ceil(imageSize / 3))
         ])
         
         // Build the link preview
-        OWSLinkPreview.tryToBuildPreviewInfo(previewUrl: linkPreviewURL).done { [weak self] draft in
+        OWSLinkPreview.tryToBuildPreviewInfo(previewUrl: linkPreviewURL)
-            // Loader
+            .done { [weak self] draft in
-            loadingView.alpha = 0
+                // TODO: Look at refactoring this behaviour to consolidate attachment mutations
-            loadingView.stopAnimating()
+                self?.attachment.linkPreviewDraft = draft
-            
+                self?.linkPreviewInfo = (url: linkPreviewURL, draft: draft)
-            self?.linkPreviewInfo = (url: linkPreviewURL, draft: draft)
+                
-            
+                // Update the UI
-            // TODO: Look at refactoring this behaviour to consolidate attachment mutations
+                self?.titleLabel.text = (draft.title ?? self?.titleLabel.text)
-            self?.attachment.linkPreviewDraft = draft
+                self?.loadingView.alpha = 0
-            
+                self?.loadingView.stopAnimating()
-            let image: UIImage?
+                self?.imageView.alpha = 1
-
+                
-            if let jpegImageData: Data = draft.jpegImageData, let loadedImage: UIImage = UIImage(data: jpegImageData) {
+                if let jpegImageData: Data = draft.jpegImageData, let loadedImage: UIImage = UIImage(data: jpegImageData) {
-                image = loadedImage
+                    self?.imageView.image = loadedImage
-                imageView.contentMode = .scaleAspectFill
+                    self?.imageView.contentMode = .scaleAspectFill
-            }
+                }
-            else {
-                image = UIImage(named: "Link")?.withTint(isLightMode ? .black : .white)
-                imageView.contentMode = .center
-            }
-            
-            // Image view
-            (imageView as? UIImageView)?.image = image
-            imageViewContainer.alpha = 1
-            imageViewContainer.backgroundColor = isDarkMode ? .black : UIColor.black.withAlphaComponent(0.06)
-            
-            // Title
-            if let title = draft.title {
-                titleLabel.font = .boldSystemFont(ofSize: Values.smallFontSize)
-                titleLabel.text = title
-                titleLabel.textAlignment = .left
-                titleLabel.numberOfLines = 2
-            }
-            
-            guard let hStackView = self?.wrapViewsInHorizontalStack(subviews: subviews) else {
-                // TODO: Fallback
-                return
             }
-            stackView.removeFromSuperview()
+            .catch { [weak self] _ in
-            self?.addSubview(hStackView)
+                self?.titleLabel.attributedText = NSMutableAttributedString(string: linkPreviewURL)
-            
+                    .rtlSafeAppend(
-            // We want to center the stackView in it's superview while also ensuring
+                        "\n\("vc_share_link_previews_error".localized())",
-            // it's superview is big enough to contain it.
+                        attributes: [
-            hStackView.autoPinWidthToSuperview(withMargin: 32)
+                            NSAttributedString.Key.font: UIFont.ows_regularFont(
-            hStackView.autoVCenterInSuperview()
+                                withSize: Values.verySmallFontSize
-            NSLayoutConstraint.autoSetPriority(UILayoutPriority.defaultLow) {
+                            ),
-                hStackView.autoPinHeightToSuperview()
+                            NSAttributedString.Key.foregroundColor: self?.fileSizeLabel.textColor
+                        ]
+                        .compactMapValues { $0 }
+                    )
+                self?.loadingView.alpha = 0
+                self?.loadingView.stopAnimating()
+                self?.imageView.alpha = 1
             }
-            hStackView.autoPinEdge(toSuperviewEdge: .top, withInset: 0, relation: .greaterThanOrEqual)
+            .retainUntilComplete()
-            hStackView.autoPinEdge(toSuperviewEdge: .bottom, withInset: 0, relation: .greaterThanOrEqual)
-        }.catch { _ in
-            // TODO: Fallback
-            loadingView.stopAnimating()
-        }.retainUntilComplete()
-
-        // We want to center the stackView in it's superview while also ensuring
-        // it's superview is big enough to contain it.
-        stackView.autoPinWidthToSuperview()
-        stackView.autoVCenterInSuperview()
-        NSLayoutConstraint.autoSetPriority(UILayoutPriority.defaultLow) {
-            stackView.autoPinHeightToSuperview()
-        }
-        stackView.autoPinEdge(toSuperviewEdge: .top, withInset: 0, relation: .greaterThanOrEqual)
-        stackView.autoPinEdge(toSuperviewEdge: .bottom, withInset: 0, relation: .greaterThanOrEqual)
     }
 
     private func createGenericPreview() {
         imageView.image = UIImage(named: "FileLarge")
-        stackView.backgroundColor = .green
+        
         self.addSubview(stackView)
         
         stackView.addArrangedSubview(imageView)
-        stackView.addArrangedSubview(UIView.vSpacer(0))
+        stackView.addArrangedSubview(UIView.vSpacer(5))
         stackView.addArrangedSubview(titleLabel)
         stackView.addArrangedSubview(fileSizeLabel)
         
         imageView.addSubview(fileTypeImageView)
+        
+        let imageSize: CGFloat = {
+            switch mode {
+                case .large: return 200
+                case .attachmentApproval: return 150
+                case .small: return 80
+            }
+        }()
 
         NSLayoutConstraint.activate([
             stackView.centerYAnchor.constraint(equalTo: centerYAnchor),
             stackView.widthAnchor.constraint(equalTo: widthAnchor),
             stackView.heightAnchor.constraint(lessThanOrEqualTo: heightAnchor),
             
-            imageView.widthAnchor.constraint(equalToConstant: 150),
+            imageView.widthAnchor.constraint(equalToConstant: imageSize),
-            imageView.heightAnchor.constraint(equalToConstant: 150),
+            imageView.heightAnchor.constraint(equalToConstant: imageSize),
             titleLabel.widthAnchor.constraint(equalTo: stackView.widthAnchor, constant: -(32 * 2)),
             fileSizeLabel.widthAnchor.constraint(equalTo: stackView.widthAnchor, constant: -(32 * 2)),
             
@@ -601,103 +642,6 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
         ])
     }
 
-    private func createHeroViewSize() -> CGFloat {
-        switch mode {
-        case .large:
-            return ScaleFromIPhone5To7Plus(175, 225)
-        case .attachmentApproval:
-            return ScaleFromIPhone5(100)
-        case .small:
-            return ScaleFromIPhone5To7Plus(80, 80)
-        }
-    }
-
-    private func createHeroImageView(imageName: String) -> UIView {
-        let imageSize = createHeroViewSize()
-
-        let image = UIImage(named: imageName)
-        assert(image != nil)
-        let imageView = UIImageView(image: image)
-        imageView.layer.minificationFilter = .trilinear
-        imageView.layer.magnificationFilter = .trilinear
-        imageView.layer.shadowColor = UIColor.black.cgColor
-        let shadowScaling = 5.0
-        imageView.layer.shadowRadius = CGFloat(2.0 * shadowScaling)
-        imageView.layer.shadowOpacity = 0.25
-        imageView.layer.shadowOffset = CGSize(width: 0.75 * shadowScaling, height: 0.75 * shadowScaling)
-        imageView.autoSetDimension(.width, toSize: imageSize)
-        imageView.autoSetDimension(.height, toSize: imageSize)
-
-        return imageView
-    }
-
-    private func labelFont() -> UIFont {
-        switch mode {
-            case .large, .attachmentApproval:
-                return UIFont.ows_regularFont(withSize: ScaleFromIPhone5To7Plus(18, 24))
-            case .small:
-                return UIFont.ows_regularFont(withSize: ScaleFromIPhone5To7Plus(14, 14))
-        }
-    }
-
-    private var controlTintColor: UIColor {
-        switch mode {
-        case .small, .large:
-            return Colors.accent
-        case .attachmentApproval:
-            return Colors.text
-        }
-    }
-
-    private func formattedFileExtension() -> String? {
-        guard let fileExtension = attachment.fileExtension else {
-            return nil
-        }
-
-        //"Format string for file extension label in call interstitial view"
-        return String(format: "ATTACHMENT_APPROVAL_FILE_EXTENSION_FORMAT".localized(), fileExtension.uppercased())
-    }
-
-    public func formattedFileName() -> String? {
-        guard let sourceFilename = attachment.sourceFilename else { return nil }
-        
-        let filename = sourceFilename.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines)
-        
-        guard filename.count > 0 else { return nil }
-        
-        return filename
-    }
-
-    private func createFileNameLabel() -> UIView? {
-        let filename = formattedFileName() ?? formattedFileExtension()
-
-        guard filename != nil else {
-            return nil
-        }
-
-        let label = UILabel()
-        label.text = filename
-        label.textColor = controlTintColor
-        label.font = labelFont()
-        label.textAlignment = .center
-        label.lineBreakMode = .byTruncatingMiddle
-        return label
-    }
-
-    private func createFileSizeLabel() -> UIView {
-        let label = UILabel()
-        let fileSize = attachment.dataLength
-        label.text = String(format: NSLocalizedString("ATTACHMENT_APPROVAL_FILE_SIZE_FORMAT",
-                                                     comment: "Format string for file size label in call interstitial view. Embeds: {{file size as 'N mb' or 'N kb'}}."),
-                            OWSFormat.formatFileSize(UInt(fileSize)))
-
-        label.textColor = controlTintColor
-        label.font = labelFont()
-        label.textAlignment = .center
-
-        return label
-    }
-
     // MARK: - Event Handlers
 
     @objc func audioPlayPauseButtonPressed(sender: UIButton) {
@@ -723,10 +667,9 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
     }
 
     private func ensureButtonState() {
-        if playbackState == .playing {
+        switch playbackState {
-            setAudioIconToPause()
+            case .playing: setAudioIconToPause()
-        } else {
+            default: setAudioIconToPlay()
-            setAudioIconToPlay()
         }
     }
 
@@ -736,22 +679,10 @@ public class MediaMessageView: UIView, OWSAudioPlayerDelegate {
     }
 
     private func setAudioIconToPlay() {
-        //attachment_audio
+        audioPlayPauseButton.setImage(UIImage(named: "Play"), for: .normal)
-//        let image = UIImage(named: "audio_play_black_large")?.withRenderingMode(.alwaysTemplate)
-//        assert(image != nil)
-//        audioPlayButton?.setImage(image, for: .normal)
-//        audioPlayButton?.imageView?.tintColor = controlTintColor
-        //let image = UIImage(named: "CirclePlay")
-        let image = UIImage(named: "Play")
-        audioPlayPauseButton.setImage(image, for: .normal)
     }
 
     private func setAudioIconToPause() {
-//        let image = UIImage(named: "audio_pause_black_large")?.withRenderingMode(.alwaysTemplate)
+        audioPlayPauseButton.setImage(UIImage(named: "Pause"), for: .normal)
-//        assert(image != nil)
-//        audioPlayButton?.setImage(image, for: .normal)
-//        audioPlayButton?.imageView?.tintColor = controlTintColor
-        let image = UIImage(named: "Pause")
-        audioPlayPauseButton.setImage(image, for: .normal)
     }
 }

SignalUtilitiesKit/Utilities/UIView+Utilities.swift

@@ -13,6 +13,13 @@ public extension UIView {
         result.set(.height, to: height)
         return result
     }
+    
+    static func vhSpacer(_ width: CGFloat, _ height: CGFloat) -> UIView {
+        let result = UIView()
+        result.set(.width, to: width)
+        result.set(.height, to: height)
+        return result
+    }
 
     static func separator() -> UIView {
         let result = UIView()