Present action sheet when user requests info about error

Also, add mising GroupCallErrorView.swift file from last commit

Signal/src/Calls/UserInterface/Group/GroupCallErrorView.swift

@@ -0,0 +1,135 @@
+//
+//  Copyright (c) 2020 Open Whisper Systems. All rights reserved.
+//
+
+import Foundation
+
+class GroupCallErrorView: UIView {
+
+    // MARK: - Interface
+
+    var forceCompactAppearance: Bool = false {
+        didSet { configure() }
+    }
+
+    var iconImage: UIImage? {
+        didSet {
+            if let iconImage = iconImage {
+                iconView.setTemplateImage(iconImage, tintColor: .ows_white)
+                miniButton.setTemplateImage(iconImage, tintColor: .ows_white)
+            } else {
+                iconView.image = nil
+                miniButton.setImage(nil, for: .normal)
+            }
+        }
+    }
+
+    var labelText: String? {
+        didSet {
+            label.text = labelText
+        }
+    }
+
+    var userTapAction: ((GroupCallErrorView) -> Void)?
+
+    func resetConfiguration() {
+        iconImage = nil
+        labelText = nil
+        userTapAction = nil
+    }
+
+    // MARK: - Views
+
+    private let iconView: UIImageView = {
+        let view = UIImageView()
+        view.setTemplateImageName("error-solid-16", tintColor: .ows_white)
+        return view
+    }()
+
+    private let label: UILabel = {
+        let label = UILabel()
+        label.font = UIFont.ows_dynamicTypeSubheadline
+        label.textAlignment = .center
+        label.textColor = .ows_white
+        label.numberOfLines = 0
+        return label
+    }()
+
+    private let button: UIButton = {
+        let buttonLabel = NSLocalizedString(
+            "GROUP_CALL_ERROR_DETAILS",
+            comment: "A button to receive more info about not seeing a participant in group call grid")
+
+        let button = UIButton()
+        button.backgroundColor = UIColor.darkGray
+        button.layer.cornerRadius = 16
+        button.titleLabel?.textAlignment = .center
+        button.contentEdgeInsets = UIEdgeInsets(top: 3, leading: 12, bottom: 3, trailing: 12)
+        button.clipsToBounds = true
+        button.setTitle(buttonLabel, for: .normal)
+        button.addTarget(self, action: #selector(didTapButton), for: .touchUpInside)
+        return button
+    }()
+    
+    private let miniButton: UIButton = {
+        let button = UIButton()
+        button.contentVerticalAlignment = .fill
+        button.contentHorizontalAlignment = .fill
+        button.setTemplateImageName("error-solid-16", tintColor: .ows_white)
+        button.addTarget(self, action: #selector(didTapButton), for: .touchUpInside)
+        return button
+    }()
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        let stackView = UIStackView(arrangedSubviews: [
+            iconView,
+            label,
+            button,
+        ])
+        stackView.axis = .vertical
+        stackView.alignment = .center
+        stackView.distribution = .fill
+
+        stackView.setCustomSpacing(12, after: iconView)
+        stackView.setCustomSpacing(16, after: label)
+
+        addSubview(stackView)
+        stackView.autoPinWidthToSuperviewMargins()
+        stackView.autoVCenterInSuperview()
+        stackView.autoPinEdge(toSuperviewMargin: .top, relation: .greaterThanOrEqual)
+        stackView.autoPinEdge(toSuperviewMargin: .bottom, relation: .greaterThanOrEqual)
+
+        iconView.autoSetDimensions(to: CGSize(width: 24, height: 24))
+
+        addSubview(miniButton)
+        miniButton.autoSetDimensions(to: CGSize(width: 24, height: 24))
+        miniButton.autoCenterInSuperview()
+        configure()
+    }
+
+    override var bounds: CGRect {
+        didSet { configure() }
+    }
+
+    override var frame: CGRect {
+        didSet { configure() }
+    }
+
+    private func configure() {
+        let isCompact = (bounds.width < 100) || (bounds.height < 100) || forceCompactAppearance
+        iconView.isHidden = isCompact
+        label.isHidden = isCompact
+        button.isHidden = isCompact
+        miniButton.isHidden = !isCompact
+    }
+
+    @objc
+    private func didTapButton() {
+        userTapAction?(self)
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}

Signal/src/Calls/UserInterface/Group/GroupCallMemberView.swift

@@ -5,7 +5,12 @@
 import Foundation
 import SignalRingRTC
 
+protocol GroupCallMemberViewDelegate: class {
+    func memberView(_: GroupCallMemberView, userRequestedInfoAboutError: GroupCallMemberView.ErrorState)
+}
+
 class GroupCallMemberView: UIView {
+    weak var delegate: GroupCallMemberViewDelegate?
     let noVideoView = UIView()
 
     let backgroundAvatarView = UIImageView()
@@ -66,6 +71,11 @@ class GroupCallMemberView: UIView {
     required init?(coder: NSCoder) {
         fatalError("init(coder:) has not been implemented")
     }
+
+    enum ErrorState {
+        case blocked(SignalServiceAddress)
+        case noMediaKeys(SignalServiceAddress)
+    }
 }
 
 class GroupCallLocalMemberView: GroupCallMemberView {
@@ -396,9 +406,14 @@ class GroupCallRemoteMemberView: GroupCallMemberView {
 
         errorView.iconImage = image
         errorView.labelText = label
-        errorView.userTapAction = { _ in
-            // TODO
-            Logger.info("Present alert controller for \(displayName)")
+        errorView.userTapAction = { [weak self] _ in
+            guard let self = self else { return }
+
+            if isBlocked {
+                self.delegate?.memberView(self, userRequestedInfoAboutError: .blocked(address))
+            } else {
+                self.delegate?.memberView(self, userRequestedInfoAboutError: .noMediaKeys(address))
+            }
         }
     }
 }

Signal/src/Calls/UserInterface/Group/GroupCallVideoGrid.swift

@@ -6,6 +6,7 @@ import Foundation
 import SignalRingRTC
 
 class GroupCallVideoGrid: UICollectionView {
+    weak var memberViewDelegate: GroupCallMemberViewDelegate?
     let layout: GroupCallVideoGridLayout
     let call: SignalCall
     init(call: SignalCall) {
@@ -65,8 +66,8 @@ extension GroupCallVideoGrid: UICollectionViewDataSource {
             return cell
         }
 
+        cell.setMemberViewDelegate(memberViewDelegate)
         cell.configure(call: call, device: remoteDevice)
-
         return cell
     }
 }
@@ -149,6 +150,10 @@ class GroupCallVideoGridCell: UICollectionViewCell {
     func configureRemoteVideo(device: RemoteDeviceState) {
         memberView.configureRemoteVideo(device: device)
     }
+
+    func setMemberViewDelegate(_ delegate: GroupCallMemberViewDelegate?) {
+        memberView.delegate = delegate
+    }
 }
 
 extension Sequence where Element: RemoteDeviceState {

Signal/src/Calls/UserInterface/Group/GroupCallVideoOverflow.swift

@@ -11,6 +11,7 @@ protocol GroupCallVideoOverflowDelegate: class {
 }
 
 class GroupCallVideoOverflow: UICollectionView {
+    weak var memberViewDelegate: GroupCallMemberViewDelegate?
     weak var overflowDelegate: GroupCallVideoOverflowDelegate?
     let call: SignalCall
 
@@ -128,8 +129,8 @@ extension GroupCallVideoOverflow: UICollectionViewDataSource {
             return cell
         }
 
+        cell.setMemberViewDelegate(memberViewDelegate)
         cell.configure(call: call, device: remoteDevice)
-
         return cell
     }
 }
@@ -186,4 +187,8 @@ class GroupCallVideoOverflowCell: UICollectionViewCell {
     func configureRemoteVideo(device: RemoteDeviceState) {
         memberView.configureRemoteVideo(device: device)
     }
+
+    func setMemberViewDelegate(_ delegate: GroupCallMemberViewDelegate?) {
+        memberView.delegate = delegate
+    }
 }

Signal/src/Calls/UserInterface/Group/GroupCallViewController.swift

@@ -47,6 +47,11 @@ class GroupCallViewController: UIViewController {
         super.init(nibName: nil, bundle: nil)
 
         call.addObserverAndSyncState(observer: self)
+
+        videoGrid.memberViewDelegate = self
+        videoOverflow.memberViewDelegate = self
+        speakerView.delegate = self
+        localMemberView.delegate = self
     }
 
     @discardableResult
@@ -588,3 +593,38 @@ extension GroupCallViewController: UIScrollViewDelegate {
         }
     }
 }
+
+extension GroupCallViewController: GroupCallMemberViewDelegate {
+    func memberView(_ view: GroupCallMemberView, userRequestedInfoAboutError error: GroupCallMemberView.ErrorState) {
+        let title: String
+        let message: String
+
+        switch error {
+        case let .blocked(address):
+            message = NSLocalizedString(
+                "GROUP_CALL_BLOCKED_ALERT_MESSAGE",
+                comment: "Message body for alert explaining that a group call participant is blocked")
+
+            let titleFormat = NSLocalizedString(
+                "GROUP_CALL_BLOCKED_ALERT_TITLE_FORMAT",
+                comment: "Title for alert explaining that a group call participant is blocked. Embeds {{ user's name }}")
+            let displayName = contactsManager.displayName(for: address)
+            title = String(format: titleFormat, [displayName])
+
+        case let .noMediaKeys(address):
+            message = NSLocalizedString(
+                "GROUP_CALL_NO_KEYS_ALERT_MESSAGE",
+                comment: "Message body for alert explaining that a group call participant cannot be displayed because of missing keys")
+
+            let titleFormat = NSLocalizedString(
+                "GROUP_CALL_NO_KEYS_ALERT_TITLE_FORMAT",
+                comment: "Title for alert explaining that a group call participant cannot be displayed because of missing keys. Embeds {{ user's name }}")
+            let displayName = contactsManager.displayName(for: address)
+            title = String(format: titleFormat, [displayName])
+        }
+
+        let actionSheet = ActionSheetController(title: title, message: message)
+        actionSheet.addAction(ActionSheetAction(title: CommonStrings.okButton))
+        presentActionSheet(actionSheet)
+    }
+}

Signal/translations/en.lproj/Localizable.strings

@@ -1522,6 +1522,12 @@
 /* Message indicating that a feature can only be used by group admins. */
 "GROUP_ADMIN_ONLY_WARNING" = "Only admins can change this option.";
 
+/* Message body for alert explaining that a group call participant is blocked */
+"GROUP_CALL_BLOCKED_ALERT_MESSAGE" = "Text TBD";
+
+/* Title for alert explaining that a group call participant is blocked. Embeds {{ user's name }} */
+"GROUP_CALL_BLOCKED_ALERT_TITLE_FORMAT" = "%@ is blocked";
+
 /* String displayed in group call grid cell when a user is blocked. Embeds {user's name} */
 "GROUP_CALL_BLOCKED_USER_FORMAT" = "%@ is blocked and will not receive your audio or video";
 
@@ -1552,6 +1558,12 @@
 /* String displayed in cell when media from a user can't be displayed in group call grid. Embeds {user's name} */
 "GROUP_CALL_MISSING_MEDIA_KEYS_FORMAT" = "Can't receive audio & video from %@";
 
+/* Message body for alert explaining that a group call participant cannot be displayed because of missing keys */
+"GROUP_CALL_NO_KEYS_ALERT_MESSAGE" = "This may be because they have not verified your safety number change, there's a problem with their device, or they have blocked you.";
+
+/* Title for alert explaining that a group call participant cannot be displayed because of missing keys. Embeds {{ user's name }} */
+"GROUP_CALL_NO_KEYS_ALERT_TITLE_FORMAT" = "Can't receive audio and video from %@";
+
 /* Text explaining that you are the only person currently in the group call */
 "GROUP_CALL_NO_ONE_HERE" = "No one else is here";