Merge branch groupcalls

6 files changed, 623 insertions, 242 deletions

diff --git a/main/src/ui/call_window/call_bottom_bar.vala b/main/src/ui/call_window/call_bottom_bar.vala
index 8a0604b3..b3fa2093 100644
--- a/main/src/ui/call_window/call_bottom_bar.vala
+++ b/main/src/ui/call_window/call_bottom_bar.vala
@@ -25,17 +25,12 @@ public class Dino.Ui.CallBottomBar : Gtk.Box {
     private MenuButton video_settings_button = new MenuButton() { halign=Align.END, valign=Align.END };
     public VideoSettingsPopover? video_settings_popover;
 
-    public CallEntryptionButton encryption_button = new CallEntryptionButton() { relief=ReliefStyle.NONE, height_request=30, width_request=30, margin_start=20, margin_bottom=25, halign=Align.START, valign=Align.END };
-
     private Label label = new Label("") { margin=20, halign=Align.CENTER, valign=Align.CENTER, wrap=true, wrap_mode=Pango.WrapMode.WORD_CHAR, hexpand=true, visible=true };
     private Stack stack = new Stack() { visible=true };
 
     public CallBottomBar() {
         Object(orientation:Orientation.HORIZONTAL, spacing:0);
 
-        Overlay default_control = new Overlay() { visible=true };
-        default_control.add_overlay(encryption_button);
-
         Box main_buttons = new Box(Orientation.HORIZONTAL, 20) { margin_start=40, margin_end=40, margin=20, halign=Align.CENTER, hexpand=true, visible=true };
 
         audio_button.add(audio_image);
@@ -66,11 +61,9 @@ public class Dino.Ui.CallBottomBar : Gtk.Box {
         button_hang.clicked.connect(() => hang_up());
         main_buttons.add(button_hang);
 
-        default_control.add(main_buttons);
-
         label.get_style_context().add_class("text-no-controls");
 
-        stack.add_named(default_control, "control-buttons");
+        stack.add_named(main_buttons, "control-buttons");
         stack.add_named(label, "label");
         this.add(stack);
 
@@ -159,6 +152,6 @@ public class Dino.Ui.CallBottomBar : Gtk.Box {
     }
 
     public bool is_menu_active() {
-        return video_settings_button.active || audio_settings_button.active || encryption_button.active;
+        return video_settings_button.active || audio_settings_button.active;
     }
 }
\ No newline at end of file
diff --git a/main/src/ui/call_window/call_connection_details_window.vala b/main/src/ui/call_window/call_connection_details_window.vala
new file mode 100644
index 00000000..1d5265c9
--- /dev/null
+++ b/main/src/ui/call_window/call_connection_details_window.vala
@@ -0,0 +1,111 @@
+using Gtk;
+
+namespace Dino.Ui {
+
+    public class CallConnectionDetailsWindow : Gtk.Window {
+
+        public Box box = new Box(Orientation.VERTICAL, 15) { margin=10, halign=Align.CENTER, valign=Align.CENTER, visible=true };
+
+        private bool video_added = false;
+        private CallContentDetails audio_details = new CallContentDetails("Audio") { visible=true };
+        private CallContentDetails video_details = new CallContentDetails("Video");
+
+        public CallConnectionDetailsWindow() {
+            box.add(audio_details);
+            box.add(video_details);
+            add(box);
+        }
+
+        public void update_content(PeerInfo peer_info) {
+            if (peer_info.audio != null) {
+                audio_details.update_content(peer_info.audio);
+            }
+            if (peer_info.video != null) {
+                add_video_widgets();
+                video_details.update_content(peer_info.video);
+            }
+        }
+
+        private void add_video_widgets() {
+            if (video_added) return;
+
+            video_details.visible = true;
+            video_added = true;
+        }
+    }
+
+    public class CallContentDetails : Gtk.Grid {
+
+        public Label rtp_title = new Label("RTP") { xalign=0, visible=true };
+        public Label rtcp_title = new Label("RTCP") { xalign=0, visible=true };
+        public Label target_recv_title = new Label("Target receive bitrate") { xalign=0, visible=true };
+        public Label target_send_title = new Label("Target send bitrate") { xalign=0, visible=true };
+
+        public Label rtp_ready = new Label("?") { xalign=0, visible=true };
+        public Label rtcp_ready = new Label("?") { xalign=0, visible=true };
+        public Label sent_bps = new Label("?") { use_markup=true, xalign=0, visible=true };
+        public Label recv_bps = new Label("?") { use_markup=true, xalign=0, visible=true };
+        public Label codec = new Label("?") { xalign=0, visible=true };
+        public Label target_receive_bitrate = new Label("n/a") { use_markup=true, xalign=0, visible=true };
+        public Label target_send_bitrate = new Label("n/a") { use_markup=true, xalign=0, visible=true };
+
+        private PeerContentInfo? prev_info = null;
+        private int row_at = 0;
+
+        public CallContentDetails(string headline) {
+            attach(new Label("<b>%s</b>".printf(headline)) { use_markup=true, xalign=0, visible=true }, 0, row_at++, 1, 1);
+            attach(rtp_title, 0, row_at, 1, 1);
+            attach(rtp_ready, 1, row_at++, 1, 1);
+            attach(rtcp_title, 0, row_at, 1, 1);
+            attach(rtcp_ready, 1, row_at++, 1, 1);
+            put_row("Sent");
+            attach(sent_bps, 1, row_at++, 1, 1);
+            put_row("Received");
+            attach(recv_bps, 1, row_at++, 1, 1);
+            put_row("Codec");
+            attach(codec, 1, row_at++, 1, 1);
+            attach(target_recv_title, 0, row_at, 1, 1);
+            attach(target_receive_bitrate, 1, row_at++, 1, 1);
+            attach(target_send_title, 0, row_at, 1, 1);
+            attach(target_send_bitrate, 1, row_at++, 1, 1);
+
+            this.column_spacing = 5;
+        }
+
+        public void update_content(PeerContentInfo info) {
+            if (!info.rtp_ready) {
+                rtp_ready.visible = rtcp_ready.visible = true;
+                rtp_title.visible = rtcp_title.visible = true;
+                rtp_ready.label = info.rtp_ready.to_string();
+                rtcp_ready.label = info.rtcp_ready.to_string();
+            } else {
+                rtp_ready.visible = rtcp_ready.visible = false;
+                rtp_title.visible = rtcp_title.visible = false;
+            }
+            if (info.target_send_bytes != -1) {
+                target_receive_bitrate.visible = target_send_bitrate.visible = true;
+                target_recv_title.visible = target_send_title.visible = true;
+                target_receive_bitrate.label = "<span font_family='monospace'>%u</span> kbps".printf(info.target_receive_bytes);
+                target_send_bitrate.label = "<span font_family='monospace'>%u</span> kbps".printf(info.target_send_bytes);
+            } else {
+                target_receive_bitrate.visible = target_send_bitrate.visible = false;
+                target_recv_title.visible = target_send_title.visible = false;
+            }
+
+            codec.label = info.codec + " " + info.clockrate.to_string();
+
+            if (prev_info != null) {
+                ulong audio_sent_kbps = (info.bytes_sent - prev_info.bytes_sent) * 8 / 1000;
+                sent_bps.label = "<span font_family='monospace'>%lu</span> kbps".printf(audio_sent_kbps);
+                ulong audio_recv_kbps = (info.bytes_received - prev_info.bytes_received) * 8 / 1000;
+                recv_bps.label = "<span font_family='monospace'>%lu</span> kbps".printf(audio_recv_kbps);
+            }
+            prev_info = info;
+        }
+
+        private void put_row(string label) {
+            attach(new Label(label) { xalign=0, visible=true }, 0, row_at, 1, 1);
+        }
+    }
+}
+
diff --git a/main/src/ui/call_window/call_encryption_button.vala b/main/src/ui/call_window/call_encryption_button.vala
index 1d785d51..a7081954 100644
--- a/main/src/ui/call_window/call_encryption_button.vala
+++ b/main/src/ui/call_window/call_encryption_button.vala
@@ -2,19 +2,21 @@ using Dino.Entities;
 using Gtk;
 using Pango;
 
-public class Dino.Ui.CallEntryptionButton : MenuButton {
+public class Dino.Ui.CallEncryptionButton : MenuButton {
 
-    private Image encryption_image = new Image.from_icon_name("changes-allow-symbolic", IconSize.BUTTON) { visible=true };
+    private Image encryption_image = new Image.from_icon_name("", IconSize.BUTTON) { visible=true };
+    private bool has_been_set = false;
+    public bool controls_active { get; set; default=false; }
 
-    construct {
+    public CallEncryptionButton() {
+        this.opacity = 0;
         add(encryption_image);
-        get_style_context().add_class("encryption-box");
         this.set_popover(popover);
+
+        this.notify["controls-active"].connect(update_opacity);
     }
 
     public void set_icon(bool encrypted, string? icon_name) {
-        this.visible = true;
-
         if (encrypted) {
             encryption_image.set_from_icon_name(icon_name ?? "changes-prevent-symbolic", IconSize.BUTTON);
             get_style_context().remove_class("unencrypted");
@@ -22,6 +24,8 @@ public class Dino.Ui.CallEntryptionButton : MenuButton {
             encryption_image.set_from_icon_name(icon_name ?? "changes-allow-symbolic", IconSize.BUTTON);
             get_style_context().add_class("unencrypted");
         }
+        has_been_set = true;
+        update_opacity();
     }
 
     public void set_info(string? title, bool show_keys, Xmpp.Xep.Jingle.ContentEncryption? audio_encryption, Xmpp.Xep.Jingle.ContentEncryption? video_encryption) {
@@ -51,6 +55,10 @@ public class Dino.Ui.CallEntryptionButton : MenuButton {
         popover.add(box);
     }
 
+    public void update_opacity() {
+        this.opacity = controls_active && has_been_set ? 1 : 0;
+    }
+
     private Grid create_media_encryption_grid(Xmpp.Xep.Jingle.ContentEncryption? encryption) {
         Grid ret = new Grid() { row_spacing=3, column_spacing=5, visible=true };
         if (encryption.peer_key.length > 0) {
diff --git a/main/src/ui/call_window/call_window.vala b/main/src/ui/call_window/call_window.vala
index 3b3d4dc2..c610444f 100644
--- a/main/src/ui/call_window/call_window.vala
+++ b/main/src/ui/call_window/call_window.vala
@@ -1,87 +1,155 @@
+using Gee;
+using Xmpp;
 using Dino.Entities;
 using Gtk;
 
 namespace Dino.Ui {
 
     public class CallWindow : Gtk.Window {
-        public string counterpart_display_name { get; set; }
 
-        // TODO should find another place for this
+        public signal void menu_dump_dot();
+
         public CallWindowController controller;
 
         public Overlay overlay = new Overlay() { visible=true };
+        public Grid grid = new Grid() { visible=true };
         public EventBox event_box = new EventBox() { visible=true };
         public CallBottomBar bottom_bar = new CallBottomBar() { visible=true };
         public Revealer bottom_bar_revealer = new Revealer() { valign=Align.END, transition_type=RevealerTransitionType.CROSSFADE, transition_duration=200, visible=true };
-        public HeaderBar header_bar = new HeaderBar() { show_close_button=true, visible=true };
-        public Revealer header_bar_revealer = new Revealer() { valign=Align.START, transition_type=RevealerTransitionType.CROSSFADE, transition_duration=200, visible=true };
-        public Stack stack = new Stack() { visible=true };
-        public Box own_video_box = new Box(Orientation.HORIZONTAL, 0) { expand=true, visible=true };
+        public HeaderBar header_bar = new HeaderBar() { valign=Align.START, halign=Align.END, show_close_button=true, visible=true };
+        public Revealer header_bar_revealer = new Revealer() { halign=Align.END, valign=Align.START, transition_type=RevealerTransitionType.CROSSFADE, transition_duration=200, visible=true };
+        public Box own_video_box = new Box(Orientation.HORIZONTAL, 0) { halign=Align.END, valign=Align.END, visible=true };
+        public Revealer invite_button_revealer = new Revealer() { margin_top=50, margin_right=30, halign=Align.END, valign=Align.START, transition_type=RevealerTransitionType.CROSSFADE, transition_duration=200 };
+        public Button invite_button = new Button.from_icon_name("dino-account-plus") { relief=ReliefStyle.NONE, visible=false };
         private Widget? own_video = null;
-        private Box? own_video_border = new Box(Orientation.HORIZONTAL, 0) { expand=true }; // hack to draw a border around our own video, since we apparently can't draw a border around the Gst widget
+        private HashMap<string, ParticipantWidget> participant_widgets = new HashMap<string, ParticipantWidget>();
+        private ArrayList<string> participants = new ArrayList<string>();
 
         private int own_video_width = 150;
         private int own_video_height = 100;
 
-        private bool hide_controll_elements = false;
-        private uint hide_controll_handler = 0;
-        private Widget? main_widget = null;
+        private bool hide_control_elements = false;
+        private uint hide_control_handler = 0;
+        public bool controls_active { get; set; default=true; }
 
         construct {
+            Util.force_css(header_bar, "* { background: none; border: 0; border-radius: 0; }");
             header_bar.get_style_context().add_class("call-header-bar");
             header_bar_revealer.add(header_bar);
+            bottom_bar_revealer.add(bottom_bar);
+            invite_button.get_style_context().add_class("black-element");
+            invite_button_revealer.add(invite_button);
+            own_video_box.get_style_context().add_class("own-video");
 
             this.get_style_context().add_class("dino-call-window");
 
-            bottom_bar_revealer.add(bottom_bar);
-
+            overlay.add(grid);
             overlay.add_overlay(own_video_box);
-            overlay.add_overlay(own_video_border);
             overlay.add_overlay(bottom_bar_revealer);
             overlay.add_overlay(header_bar_revealer);
+            overlay.add_overlay(invite_button_revealer);
+            overlay.get_child_position.connect(on_get_child_position);
 
             event_box.add(overlay);
             add(event_box);
-
-            Util.force_css(own_video_border, "* { border: 1px solid #616161; background-color: transparent; }");
         }
 
         public CallWindow() {
-            event_box.events |= Gdk.EventMask.POINTER_MOTION_MASK;
-            event_box.events |= Gdk.EventMask.ENTER_NOTIFY_MASK;
-            event_box.events |= Gdk.EventMask.LEAVE_NOTIFY_MASK;
-
-            this.bind_property("counterpart-display-name", header_bar, "title", BindingFlags.SYNC_CREATE);
-            this.bind_property("counterpart-display-name", bottom_bar, "counterpart-display-name", BindingFlags.SYNC_CREATE);
+            this.bind_property("controls-active", bottom_bar_revealer, "reveal-child", BindingFlags.SYNC_CREATE);
+            this.bind_property("controls-active", header_bar_revealer, "reveal-child", BindingFlags.SYNC_CREATE);
+            this.bind_property("controls-active", invite_button_revealer, "reveal-child", BindingFlags.SYNC_CREATE);
 
             event_box.motion_notify_event.connect(reveal_control_elements);
             event_box.enter_notify_event.connect(reveal_control_elements);
             event_box.leave_notify_event.connect(reveal_control_elements);
             this.configure_event.connect(reveal_control_elements); // upon resizing
-            this.configure_event.connect(update_own_video_position);
+
+            this.configure_event.connect(reposition_participant_widgets);
 
             this.set_titlebar(new OutsideHeaderBar(this.header_bar) { visible=true });
 
             reveal_control_elements();
         }
 
-        public void set_video_fallback(StreamInteractor stream_interactor, Conversation conversation) {
-            hide_controll_elements = false;
+        public void add_participant(string participant, ParticipantWidget participant_widget) {
+            participant_widget.visible = true;
+            this.bind_property("controls-active", participant_widget, "controls-active", BindingFlags.SYNC_CREATE);
+            this.bind_property("controls-active", participant_widget.encryption_button, "controls-active", BindingFlags.SYNC_CREATE);
+
+            participants.add(participant);
+            participant_widgets[participant] = participant_widget;
+            grid.attach(participant_widget, 0, 0);
+
+            reposition_participant_widgets();
+        }
+
+        public void remove_participant(string participant) {
+            participants.remove(participant);
+            grid.remove(participant_widgets[participant]);
+            participant_widgets.unset(participant);
 
-            Box box = new Box(Orientation.HORIZONTAL, 0) { visible=true };
-            box.get_style_context().add_class("video-placeholder-box");
-            AvatarImage avatar = new AvatarImage() { hexpand=true, vexpand=true, halign=Align.CENTER, valign=Align.CENTER, height=100, width=100, visible=true };
-            avatar.set_conversation(stream_interactor, conversation);
-            box.add(avatar);
+            reposition_participant_widgets();
+        }
 
-            set_new_main_widget(box);
+        public void set_video(string participant, Widget widget) {
+            participant_widgets[participant].set_video(widget);
+            hide_control_elements = true;
+            timeout_hide_control_elements();
         }
 
-        public void set_video(Widget widget) {
-            hide_controll_elements = true;
+        public void set_placeholder(string participant, Conversation? conversation, StreamInteractor stream_interactor) {
+            participant_widgets[participant].set_placeholder(conversation, stream_interactor);
+            hide_control_elements = false;
+            foreach (ParticipantWidget participant_widget in participant_widgets.values) {
+                if (participant_widget.shows_video) {
+                    hide_control_elements = true;
+                }
+            }
 
-            widget.visible = true;
-            set_new_main_widget(widget);
+            if (!hide_control_elements) {
+                reveal_control_elements();
+            }
+        }
+
+        private bool reposition_participant_widgets() {
+            int width, height;
+            this.get_size(out width,out height);
+            reposition_participant_widgets_rec(participants, width, height, 0, 0, 0, 0);
+            return false;
+        }
+
+        private void reposition_participant_widgets_rec(ArrayList<string> participants, int width, int height, int margin_top, int margin_right, int margin_bottom, int margin_left) {
+            if (participants.size == 0) return;
+
+            if (participants.size == 1) {
+                participant_widgets[participants[0]].margin_top = margin_top;
+                participant_widgets[participants[0]].margin_end = margin_right;
+                participant_widgets[participants[0]].margin_bottom = margin_bottom;
+                participant_widgets[participants[0]].margin_start = margin_left;
+
+                participant_widgets[participants[0]].on_lowest_row_changed(margin_bottom == 0);
+                participant_widgets[participants[0]].on_highest_row_changed(margin_top == 0);
+                return;
+            }
+
+            ArrayList<string> first_part = new ArrayList<string>();
+            ArrayList<string> last_part = new ArrayList<string>();
+
+            for (int i = 0; i < participants.size; i++) {
+                if (i < Math.ceil((double)participants.size / (double)2)) {
+                    first_part.add(participants[i]);
+                } else {
+                    last_part.add(participants[i]);
+                }
+            }
+
+            if (width > height) {
+                reposition_participant_widgets_rec(first_part, width / 2, height, margin_top, margin_right + width / 2, margin_bottom, margin_left);
+                reposition_participant_widgets_rec(last_part, width / 2, height, margin_top, margin_right, margin_bottom, margin_left + width / 2);
+            } else {
+                reposition_participant_widgets_rec(first_part, width, height / 2, margin_top, margin_right, margin_bottom + height / 2, margin_left);
+                reposition_participant_widgets_rec(last_part, width, height / 2, margin_top + height / 2, margin_right, margin_bottom, margin_left);
+            }
         }
 
         public void set_own_video(Widget? widget_) {
@@ -92,13 +160,7 @@ namespace Dino.Ui {
                 own_video = new Box(Orientation.HORIZONTAL, 0) { expand=true };
             }
             own_video.visible = true;
-            own_video.width_request = 150;
-            own_video.height_request = 100;
             own_video_box.add(own_video);
-
-            own_video_border.visible = true;
-
-            update_own_video_position();
         }
 
         public void set_own_video_ratio(int width, int height) {
@@ -109,78 +171,25 @@ namespace Dino.Ui {
                 this.own_video_width = width * 100 / height;
                 this.own_video_height = 100;
             }
-
-            own_video.width_request = own_video_width;
-            own_video.height_request = own_video_height;
-
-            update_own_video_position();
         }
 
         public void unset_own_video() {
             own_video_box.foreach((widget) => { own_video_box.remove(widget); });
-
-            own_video_border.visible = false;
-        }
-
-        public void set_test_video() {
-            hide_controll_elements = true;
-
-            var pipeline = new Gst.Pipeline(null);
-            var src = Gst.ElementFactory.make("videotestsrc", null);
-            pipeline.add(src);
-            Gst.Video.Sink sink = (Gst.Video.Sink) Gst.ElementFactory.make("gtksink", null);
-            Gtk.Widget widget;
-            sink.get("widget", out widget);
-            widget.unparent();
-            pipeline.add(sink);
-            src.link(sink);
-            widget.visible = true;
-
-            pipeline.set_state(Gst.State.PLAYING);
-
-            sink.get_static_pad("sink").notify["caps"].connect(() => {
-                int width, height;
-                sink.get_static_pad("sink").caps.get_structure(0).get_int("width", out width);
-                sink.get_static_pad("sink").caps.get_structure(0).get_int("height", out height);
-                widget.width_request = width;
-                widget.height_request = height;
-            });
-
-            set_new_main_widget(widget);
         }
 
-        private void set_new_main_widget(Widget widget) {
-            if (main_widget != null) overlay.remove(main_widget);
-            overlay.add(widget);
-            main_widget = widget;
+        public void set_status(string participant_id, string state) {
+            participant_widgets[participant_id].set_status(state);
         }
 
-        public void set_status(string state) {
-            switch (state) {
-                case "requested":
-                    header_bar.subtitle = _("Calling…");
-                    break;
-                case "ringing":
-                    header_bar.subtitle = _("Ringing…");
-                    break;
-                case "establishing":
-                    header_bar.subtitle = _("Connecting…");
-                    break;
-                default:
-                    header_bar.subtitle = null;
-                    break;
-            }
-        }
-
-        public void show_counterpart_ended(string? reason_name, string? reason_text) {
-            hide_controll_elements = false;
+        public void show_counterpart_ended(string who_terminated, string? reason_name, string? reason_text) {
+            hide_control_elements = false;
             reveal_control_elements();
 
             string text = "";
             if (reason_name == Xmpp.Xep.Jingle.ReasonElement.SUCCESS) {
-                text = _("%s ended the call").printf(counterpart_display_name);
+                text = _("%s ended the call").printf(who_terminated);
             } else if (reason_name == Xmpp.Xep.Jingle.ReasonElement.DECLINE || reason_name == Xmpp.Xep.Jingle.ReasonElement.BUSY) {
-                text = _("%s declined the call").printf(counterpart_display_name);
+                text = _("%s declined the call").printf(who_terminated);
             } else {
                 text = "The call has been terminated: " + (reason_name ?? "") + " " + (reason_text ?? "");
             }
@@ -188,48 +197,53 @@ namespace Dino.Ui {
             bottom_bar.show_counterpart_ended(text);
         }
 
-        public bool reveal_control_elements() {
+        private bool reveal_control_elements() {
             if (!bottom_bar_revealer.child_revealed) {
-                bottom_bar_revealer.set_reveal_child(true);
-                header_bar_revealer.set_reveal_child(true);
+                controls_active = true;
             }
 
-            if (hide_controll_handler != 0) {
-                Source.remove(hide_controll_handler);
-                hide_controll_handler = 0;
+            timeout_hide_control_elements();
+            return false;
+        }
+
+        private void timeout_hide_control_elements() {
+            if (hide_control_handler != 0) {
+                Source.remove(hide_control_handler);
+                hide_control_handler = 0;
             }
 
-            if (!hide_controll_elements) {
-                return false;
+            if (!hide_control_elements) {
+                return;
             }
 
-            hide_controll_handler = Timeout.add_seconds(3, () => {
-                if (!hide_controll_elements) {
+            hide_control_handler = Timeout.add_seconds(3, () => {
+                if (!hide_control_elements) {
                     return false;
                 }
 
                 if (bottom_bar.is_menu_active()) {
-                    return true;
+                    return false;
                 }
 
-                header_bar_revealer.set_reveal_child(false);
-                bottom_bar_revealer.set_reveal_child(false);
-                hide_controll_handler = 0;
+                controls_active = false;
+
+                hide_control_handler = 0;
                 return false;
             });
-            return false;
         }
 
-        private bool update_own_video_position() {
-            if (own_video == null) return false;
-
-            int width, height;
-            this.get_size(out width,out height);
-
-            own_video.margin_end = own_video.margin_bottom = own_video_border.margin_end = own_video_border.margin_bottom = 20;
-            own_video.margin_start = own_video_border.margin_start = width - own_video_width - 20;
-            own_video.margin_top = own_video_border.margin_top = height - own_video_height - 20;
-
+        private bool on_get_child_position(Widget widget, out Gdk.Rectangle allocation) {
+            if (widget == own_video_box) {
+                int width, height;
+                this.get_size(out width,out height);
+
+                allocation = Gdk.Rectangle();
+                allocation.width = own_video_width;
+                allocation.height = own_video_height;
+                allocation.x = width - own_video_width - 20;
+                allocation.y = height - own_video_height - 20;
+                return true;
+            }
             return false;
         }
     }
diff --git a/main/src/ui/call_window/call_window_controller.vala b/main/src/ui/call_window/call_window_controller.vala
index b07b41b1..dbf2106c 100644
--- a/main/src/ui/call_window/call_window_controller.vala
+++ b/main/src/ui/call_window/call_window_controller.vala
@@ -1,3 +1,5 @@
+using Xmpp;
+using Gee;
 using Dino.Entities;
 using Gtk;
 
@@ -5,103 +7,227 @@ public class Dino.Ui.CallWindowController : Object {
 
     private CallWindow call_window;
     private Call call;
-    private Conversation conversation;
+    private CallState call_state;
     private StreamInteractor stream_interactor;
     private Calls calls;
     private Plugins.VideoCallPlugin call_plugin = Dino.Application.get_default().plugin_registry.video_call_plugin;
 
     private Plugins.VideoCallWidget? own_video = null;
-    private Plugins.VideoCallWidget? counterpart_video = null;
+    private HashMap<string, Plugins.VideoCallWidget> participant_videos = new HashMap<string, Plugins.VideoCallWidget>();
+    private HashMap<string, ParticipantWidget> participant_widgets = new HashMap<string, ParticipantWidget>();
+    private HashMap<string, PeerState> peer_states = new HashMap<string, PeerState>();
     private int window_height = -1;
     private int window_width = -1;
     private bool window_size_changed = false;
+    private ulong[] call_window_handler_ids = new ulong[0];
+    private ulong[] bottom_bar_handler_ids = new ulong[0];
+    private ulong[] invite_handler_ids = new ulong[0];
 
-    public CallWindowController(CallWindow call_window, Call call, StreamInteractor stream_interactor) {
+    public CallWindowController(CallWindow call_window, CallState call_state, StreamInteractor stream_interactor) {
         this.call_window = call_window;
-        this.call = call;
+        this.call = call_state.call;
+        this.call_state = call_state;
         this.stream_interactor = stream_interactor;
 
         this.calls = stream_interactor.get_module(Calls.IDENTITY);
-        this.conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(call.counterpart.bare_jid, call.account, Conversation.Type.CHAT);
         this.own_video = call_plugin.create_widget(Plugins.WidgetType.GTK);
-        this.counterpart_video = call_plugin.create_widget(Plugins.WidgetType.GTK);
 
-        call_window.counterpart_display_name = Util.get_conversation_display_name(stream_interactor, conversation);
         call_window.set_default_size(704, 528); // 640x480 * 1.1
-        call_window.set_video_fallback(stream_interactor, conversation);
 
-        this.call_window.bottom_bar.video_enabled = calls.should_we_send_video(call);
+        this.call_window.bottom_bar.video_enabled = call_state.should_we_send_video();
 
-        if (call.direction == Call.DIRECTION_INCOMING) {
-            call_window.set_status("establishing");
-        } else {
-            call_window.set_status("requested");
+        call_state.terminated.connect((who_terminated, reason_name, reason_text) => {
+            Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(who_terminated.bare_jid, call.account, Conversation.Type.CHAT);
+            string display_name = conversation != null ? Util.get_conversation_display_name(stream_interactor, conversation) : who_terminated.bare_jid.to_string();
+
+            call_window.show_counterpart_ended(display_name, reason_name, reason_text);
+            Timeout.add_seconds(3, () => {
+                call_window.close();
+                call_window.destroy();
+
+                return false;
+            });
+        });
+        call_state.peer_joined.connect((jid, peer_state) => {
+            connect_peer_signals(peer_state);
+            add_new_participant(peer_state.internal_id, peer_state.jid);
+        });
+        call_state.peer_left.connect((jid, peer_state, reason_name, reason_text) => {
+            remove_participant(peer_state.internal_id);
+        });
+
+        foreach (PeerState peer_state in call_state.peers.values) {
+            connect_peer_signals(peer_state);
+            add_new_participant(peer_state.internal_id, peer_state.jid);
         }
 
-        call_window.bottom_bar.hang_up.connect(() => {
-            calls.end_call(conversation, call);
+        // Call window signals
+
+        bottom_bar_handler_ids += call_window.bottom_bar.hang_up.connect(() => {
+            call_state.end();
             call_window.close();
             call_window.destroy();
             this.dispose();
         });
-        call_window.destroy.connect(() => {
-            calls.end_call(conversation, call);
+        call_window_handler_ids += call_window.destroy.connect(() => {
+            call_state.end();
             this.dispose();
         });
-
-        call_window.bottom_bar.notify["audio-enabled"].connect(() => {
-            calls.mute_own_audio(call, !call_window.bottom_bar.audio_enabled);
+        bottom_bar_handler_ids += call_window.bottom_bar.notify["audio-enabled"].connect(() => {
+            call_state.mute_own_audio(!call_window.bottom_bar.audio_enabled);
         });
-        call_window.bottom_bar.notify["video-enabled"].connect(() => {
-            calls.mute_own_video(call, !call_window.bottom_bar.video_enabled);
+        bottom_bar_handler_ids += call_window.bottom_bar.notify["video-enabled"].connect(() => {
+            call_state.mute_own_video(!call_window.bottom_bar.video_enabled);
             update_own_video();
         });
+        call_window_handler_ids += call_window.configure_event.connect((event) => {
+            if (window_width == -1 || window_height == -1) return false;
+            int current_height = this.call_window.get_allocated_height();
+            int current_width = this.call_window.get_allocated_width();
+            if (window_width != current_width || window_height != current_height) {
+                debug("Call window size changed by user. Disabling auto window-to-video size adaptation. %i->%i x %i->%i", window_width, current_width, window_height, current_height);
+                window_size_changed = true;
+            }
+            return false;
+        });
+        call_window_handler_ids += call_window.realize.connect(() => {
+            capture_window_size();
+        });
+        invite_handler_ids += call_window.invite_button.clicked.connect(() => {
+            Gee.List<Account> acc_list = new ArrayList<Account>(Account.equals_func);
+            acc_list.add(call.account);
+            SelectContactDialog add_chat_dialog = new SelectContactDialog(stream_interactor, acc_list);
+            add_chat_dialog.set_transient_for((Window) call_window.get_toplevel());
+            add_chat_dialog.title = _("Invite to Call");
+            add_chat_dialog.ok_button.label = _("Invite");
+            add_chat_dialog.selected.connect((account, jid) => {
+                call_state.invite_to_call.begin(jid);
+            });
+            add_chat_dialog.present();
+        });
 
-        calls.counterpart_sends_video_updated.connect((call, mute) => {
+        calls.conference_info_received.connect((call, conference_info) => {
             if (!this.call.equals(call)) return;
 
+            var participants = new ArrayList<string>();
+            participants.add_all(participant_videos.keys);
+            foreach (string participant in participants) {
+                remove_participant(participant);
+            }
+            foreach (Jid participant in conference_info.users.keys) {
+                add_new_participant(participant.to_string(), participant);
+            }
+        });
+
+        own_video.resolution_changed.connect((width, height) => {
+            if (width == 0 || height == 0) return;
+            call_window.set_own_video_ratio((int)width, (int)height);
+        });
+
+        call_window.menu_dump_dot.connect(() => { call_plugin.dump_dot(); });
+
+        update_own_video();
+    }
+
+    private void connect_peer_signals(PeerState peer_state) {
+        string peer_id = peer_state.internal_id;
+        Jid peer_jid = peer_state.jid;
+        peer_states[peer_id] = peer_state;
+
+        peer_state.connection_ready.connect(() => {
+            call_window.set_status(peer_state.internal_id, "");
+            if (participant_widgets.size == 1) {
+                // This is the first peer.
+                // If it can do MUJI, show invite button.
+                call_window.invite_button_revealer.visible = true;
+//                stream_interactor.get_module(EntityInfo.IDENTITY).has_feature.begin(call.account, peer_state.jid, Xep.Muji.NS_URI, (_, res) => {
+//                    bool has_feature = stream_interactor.get_module(EntityInfo.IDENTITY).has_feature.end(res);
+//                    call_window.invite_button_revealer.visible = has_feature;
+//                });
+
+                call_plugin.devices_changed.connect((media, incoming) => {
+                    if (media == "audio") update_audio_device_choices();
+                    if (media == "video") update_video_device_choices();
+                });
+
+                update_audio_device_choices();
+                update_video_device_choices();
+            } else if (participant_widgets.size >= 1) {
+                call_window.invite_button_revealer.visible = true;
+            }
+        });
+        peer_state.counterpart_sends_video_updated.connect((mute) => {
             if (mute) {
-                call_window.set_video_fallback(stream_interactor, conversation);
-                counterpart_video.detach();
+                Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(peer_jid.bare_jid, call.account, Conversation.Type.CHAT);
+                call_window.set_placeholder(peer_id, conversation, stream_interactor);
+                participant_videos[peer_id].detach();
             } else {
-                if (!(counterpart_video is Widget)) return;
-                Widget widget = (Widget) counterpart_video;
-                call_window.set_video(widget);
-                counterpart_video.display_stream(calls.get_video_stream(call));
+                if (!(participant_videos[peer_id] is Widget)) return;
+                Widget widget = (Widget) participant_videos[peer_id];
+                call_window.set_video(peer_id, widget);
+                participant_videos[peer_id].display_stream(peer_state.get_video_stream(call), peer_jid);
             }
         });
-        calls.info_received.connect((call, session_info) => {
-            if (!this.call.equals(call)) return;
+        peer_state.info_received.connect((session_info) => {
             if (session_info == Xmpp.Xep.JingleRtp.CallSessionInfo.RINGING) {
-                call_window.set_status("ringing");
+                call_window.set_status(peer_state.internal_id, "ringing");
             }
         });
-        calls.encryption_updated.connect((call, audio_encryption, video_encryption, same) => {
-            if (!this.call.equals(call)) return;
+        peer_state.encryption_updated.connect((audio_encryption, video_encryption, same) => {
+            update_encryption_indicator(participant_widgets[peer_id].encryption_button, audio_encryption, video_encryption, same);
+        });
+    }
 
-            string? title = null;
-            string? icon_name = null;
-            bool show_keys = true;
-            Plugins.Registry registry = Dino.Application.get_default().plugin_registry;
-            Plugins.CallEncryptionEntry? encryption_entry = audio_encryption != null ? registry.call_encryption_entries[audio_encryption.encryption_ns] : null;
-            if (encryption_entry != null) {
-                Plugins.CallEncryptionWidget? encryption_widgets = encryption_entry.get_widget(call.account, audio_encryption);
-                if (encryption_widgets != null) {
-                    title = encryption_widgets.get_title();
-                    icon_name = encryption_widgets.get_icon_name();
-                    show_keys = encryption_widgets.show_keys();
-                }
+    private void update_encryption_indicator(CallEncryptionButton encryption_button, Xep.Jingle.ContentEncryption? audio_encryption, Xep.Jingle.ContentEncryption? video_encryption, bool same) {
+        string? title = null;
+        string? icon_name = null;
+        bool show_keys = true;
+        Plugins.Registry registry = Dino.Application.get_default().plugin_registry;
+        Plugins.CallEncryptionEntry? encryption_entry = audio_encryption != null ? registry.call_encryption_entries[audio_encryption.encryption_ns] : null;
+        if (encryption_entry != null) {
+            Plugins.CallEncryptionWidget? encryption_widgets = encryption_entry.get_widget(call.account, audio_encryption);
+            if (encryption_widgets != null) {
+                title = encryption_widgets.get_title();
+                icon_name = encryption_widgets.get_icon_name();
+                show_keys = encryption_widgets.show_keys();
             }
-            call_window.bottom_bar.encryption_button.set_info(title, show_keys, audio_encryption, same ? null :video_encryption);
-            call_window.bottom_bar.encryption_button.set_icon(audio_encryption != null, icon_name);
-        });
+        }
 
-        own_video.resolution_changed.connect((width, height) => {
-            if (width == 0 || height == 0) return;
-            call_window.set_own_video_ratio((int)width, (int)height);
+        encryption_button.set_info(title, show_keys, audio_encryption, same ? null : video_encryption);
+        encryption_button.set_icon(audio_encryption != null, icon_name);
+    }
+
+    private void add_new_participant(string participant_id, Jid jid) {
+        if (participant_widgets.has_key(participant_id)) {
+            warning("[%s] Attempted to add same participant twice: %s", call.account.bare_jid.to_string(), jid.to_string());
+            return;
+        }
+        debug("[%s] Call window controller | Add participant: %s", call.account.bare_jid.to_string(), jid.to_string());
+
+        Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(jid.bare_jid, call.account, Conversation.Type.CHAT);
+        string participant_name = conversation != null ? Util.get_conversation_display_name(stream_interactor, conversation) : jid.bare_jid.to_string();
+
+        ParticipantWidget participant_widget = new ParticipantWidget(participant_name);
+        participant_widget.menu_button.clicked.connect((event) => {
+            var conn_details_window = new CallConnectionDetailsWindow() { title=participant_name, visible=true };
+            conn_details_window.update_content(peer_states[participant_id].get_info());
+            uint timeout_handle_id = Timeout.add_seconds(1, () => {
+                conn_details_window.update_content(peer_states[participant_id].get_info());
+                return true;
+            });
+            conn_details_window.set_transient_for(call_window);
+            conn_details_window.destroy.connect(() => Source.remove(timeout_handle_id));
+            conn_details_window.present();
+            this.call_window.destroy.connect(() => conn_details_window.close() );
         });
-        counterpart_video.resolution_changed.connect((width, height) => {
-            if (window_size_changed) return;
+        participant_widgets[participant_id] = participant_widget;
+
+        call_window.add_participant(participant_id, participant_widget);
+
+        participant_videos[participant_id] = call_plugin.create_widget(Plugins.WidgetType.GTK);
+
+        participant_videos[participant_id].resolution_changed.connect((width, height) => {
+            if (window_size_changed || participant_widgets.size > 1) return;
             if (width == 0 || height == 0) return;
             if (width > height) {
                 call_window.resize(704, (int) (height * 704 / width));
@@ -110,24 +236,22 @@ public class Dino.Ui.CallWindowController : Object {
             }
             capture_window_size();
         });
-        call_window.configure_event.connect((event) => {
-            if (window_width == -1 || window_height == -1) return false;
-            int current_height = this.call_window.get_allocated_height();
-            int current_width = this.call_window.get_allocated_width();
-            if (window_width != current_width || window_height != current_height) {
-                debug("Call window size changed by user. Disabling auto window-to-video size adaptation. %i->%i x %i->%i", window_width, current_width, window_height, current_height);
-                window_size_changed = true;
-            }
-            return false;
-        });
-        call_window.realize.connect(() => {
-            capture_window_size();
-        });
 
-        call.notify["state"].connect(on_call_state_changed);
-        calls.call_terminated.connect(on_call_terminated);
+        participant_widget.set_placeholder(conversation, stream_interactor);
+        if (call.direction == Call.DIRECTION_INCOMING) {
+            call_window.set_status(participant_id, "establishing");
+        } else {
+            call_window.set_status(participant_id, "requested");
+        }
+    }
 
-        update_own_video();
+    private void remove_participant(string participant_id) {
+        if (peer_states.has_key(participant_id)) debug(@"[%s] Call window controller | Remove participant: %s", call.account.bare_jid.to_string(), peer_states[participant_id].jid.to_string());
+
+        participant_videos.unset(participant_id);
+        participant_widgets.unset(participant_id);
+        peer_states.unset(participant_id);
+        call_window.remove_participant(participant_id);
     }
 
     private void capture_window_size() {
@@ -137,33 +261,6 @@ public class Dino.Ui.CallWindowController : Object {
         this.window_width = this.call_window.get_allocated_width();
     }
 
-    private void on_call_state_changed() {
-        if (call.state == Call.State.IN_PROGRESS) {
-            call_window.set_status("");
-            call_plugin.devices_changed.connect((media, incoming) => {
-                if (media == "audio") update_audio_device_choices();
-                if (media == "video") update_video_device_choices();
-            });
-
-            update_audio_device_choices();
-            update_video_device_choices();
-        }
-    }
-
-    private void on_call_terminated(Call call, string? reason_name, string? reason_text) {
-        call_window.show_counterpart_ended(reason_name, reason_text);
-        Timeout.add_seconds(3, () => {
-            call.notify["state"].disconnect(on_call_state_changed);
-            calls.call_terminated.disconnect(on_call_terminated);
-
-
-            call_window.close();
-            call_window.destroy();
-
-            return false;
-        });
-    }
-
     private void update_audio_device_choices() {
         if (call_plugin.get_devices("audio", true).size == 0 || call_plugin.get_devices("audio", false).size == 0) {
             call_window.bottom_bar.show_audio_device_error();
@@ -190,13 +287,13 @@ public class Dino.Ui.CallWindowController : Object {
         });*/
     }
 
-    private void update_current_audio_device(AudioSettingsPopover audio_settings_popover) {
+    /*private void update_current_audio_device(AudioSettingsPopover audio_settings_popover) {
         Xmpp.Xep.JingleRtp.Stream stream = calls.get_audio_stream(call);
         if (stream != null) {
             audio_settings_popover.current_microphone_device = call_plugin.get_device(stream, false);
             audio_settings_popover.current_speaker_device = call_plugin.get_device(stream, true);
         }
-    }
+    }*/
 
     private void update_video_device_choices() {
         int device_count = call_plugin.get_devices("video", false).size;
@@ -223,12 +320,37 @@ public class Dino.Ui.CallWindowController : Object {
         });*/
     }
 
-    private void update_current_video_device(VideoSettingsPopover video_settings_popover) {
+    public void add_test_video() {
+        var pipeline = new Gst.Pipeline(null);
+        var src = Gst.ElementFactory.make("videotestsrc", null);
+        pipeline.add(src);
+        Gst.Video.Sink sink = (Gst.Video.Sink) Gst.ElementFactory.make("gtksink", null);
+        Gtk.Widget widget;
+        sink.get("widget", out widget);
+        widget.unparent();
+        pipeline.add(sink);
+        src.link(sink);
+        widget.visible = true;
+
+        pipeline.set_state(Gst.State.PLAYING);
+
+        sink.get_static_pad("sink").notify["caps"].connect(() => {
+            int width, height;
+            sink.get_static_pad("sink").caps.get_structure(0).get_int("width", out width);
+            sink.get_static_pad("sink").caps.get_structure(0).get_int("height", out height);
+            widget.width_request = width;
+            widget.height_request = height;
+        });
+
+//        call_window.set_participant_video(Xmpp.random_uuid(), widget);
+    }
+
+    /*private void update_current_video_device(VideoSettingsPopover video_settings_popover) {
         Xmpp.Xep.JingleRtp.Stream stream = calls.get_video_stream(call);
         if (stream != null) {
             video_settings_popover.current_device = call_plugin.get_device(stream, false);
         }
-    }
+    }*/
 
     private void update_own_video() {
         if (this.call_window.bottom_bar.video_enabled) {
@@ -247,8 +369,12 @@ public class Dino.Ui.CallWindowController : Object {
     }
 
     public override void dispose() {
+        foreach (ulong handler_id in call_window_handler_ids) call_window.disconnect(handler_id);
+        foreach (ulong handler_id in bottom_bar_handler_ids) call_window.bottom_bar.disconnect(handler_id);
+        foreach (ulong handler_id in invite_handler_ids) call_window.invite_button.disconnect(handler_id);
+
+        call_window_handler_ids = bottom_bar_handler_ids = invite_handler_ids = new ulong[0];
+
         base.dispose();
-        call.notify["state"].disconnect(on_call_state_changed);
-        calls.call_terminated.disconnect(on_call_terminated);
     }
 }
\ No newline at end of file
diff --git a/main/src/ui/call_window/participant_widget.vala b/main/src/ui/call_window/participant_widget.vala
new file mode 100644
index 00000000..cbf8df2d
--- /dev/null
+++ b/main/src/ui/call_window/participant_widget.vala
@@ -0,0 +1,129 @@
+using Pango;
+using Gee;
+using Xmpp;
+using Dino.Entities;
+using Gtk;
+
+namespace Dino.Ui {
+
+    public class ParticipantWidget : Gtk.Overlay {
+
+        public Widget main_widget;
+        public Box outer_box = new Box(Orientation.HORIZONTAL, 0) { valign=Align.START, visible=true };
+        public Box inner_box = new Box(Orientation.HORIZONTAL, 0) { margin_start=5, margin_top=5, hexpand=true, visible=true };
+        public Box title_box = new Box(Orientation.VERTICAL, 0) { valign=Align.CENTER, hexpand=true, visible=true };
+        public CallEncryptionButton encryption_button = new CallEncryptionButton() { opacity=0, relief=ReliefStyle.NONE, height_request=30, width_request=30, margin_end=5, visible=true };
+        public Label status_label = new Label("") { ellipsize=EllipsizeMode.MIDDLE };
+        public Label name_label = new Label("") { ellipsize=EllipsizeMode.MIDDLE, visible=true };
+        public Button menu_button = new Button.from_icon_name("view-more-horizontal-symbolic") { relief=ReliefStyle.NONE, visible=true };
+        public bool shows_video = false;
+        public string? participant_name;
+
+        bool is_highest_row = false;
+        bool is_lowest_row = false;
+        public bool controls_active { get; set; }
+
+        public ParticipantWidget(string participant_name) {
+            this.participant_name = participant_name;
+            name_label.label = participant_name;
+
+            name_label.attributes = new AttrList();
+            name_label.attributes.filter((attr) => attr.equal(attr_weight_new(Weight.BOLD)));
+
+            name_label.attributes = new AttrList();
+            name_label.attributes.filter((attr) => attr.equal(attr_scale_new(0.9)));
+            status_label.get_style_context().add_class("dim-label");
+
+            Util.force_css(outer_box, "* { color: white; text-shadow: 1px 1px black; }");
+            menu_button.get_style_context().add_class("participant-title-button");
+            encryption_button.get_style_context().add_class("participant-title-button");
+
+            title_box.add(name_label);
+            title_box.add(status_label);
+
+            outer_box.add(inner_box);
+
+            inner_box.add(menu_button);
+            inner_box.add(encryption_button);
+            inner_box.add(title_box);
+            inner_box.add(new Button.from_icon_name("go-up-symbolic") { opacity=0, visible=true });
+            inner_box.add(new Button.from_icon_name("go-up-symbolic") { opacity=0, visible=true });
+
+            this.add_overlay(outer_box);
+
+            this.notify["controls-active"].connect(reveal_or_hide_controls);
+        }
+
+        public void on_show_names_changed(bool show) {
+            name_label.visible = show;
+            reveal_or_hide_controls();
+        }
+
+        public void on_highest_row_changed(bool is_highest) {
+            is_highest_row = is_highest;
+            reveal_or_hide_controls();
+        }
+
+        public void on_lowest_row_changed(bool is_lowest) {
+            is_lowest_row = is_lowest;
+            reveal_or_hide_controls();
+        }
+
+        public void set_video(Widget widget) {
+            shows_video = true;
+            widget.visible = true;
+            set_participant_widget(widget);
+        }
+
+        public void set_placeholder(Conversation? conversation, StreamInteractor stream_interactor) {
+            shows_video = false;
+            Box box = new Box(Orientation.HORIZONTAL, 0) { visible=true };
+            box.get_style_context().add_class("video-placeholder-box");
+            AvatarImage avatar = new AvatarImage() { allow_gray=false, hexpand=true, vexpand=true, halign=Align.CENTER, valign=Align.CENTER, height=100, width=100, visible=true };
+            if (conversation != null) {
+                avatar.set_conversation(stream_interactor, conversation);
+            } else {
+                avatar.set_text("?", false);
+            }
+            box.add(avatar);
+
+            set_participant_widget(box);
+        }
+
+        private void set_participant_widget(Widget widget) {
+            widget.expand = true;
+            if (main_widget != null) this.remove(main_widget);
+            main_widget = widget;
+            this.add(main_widget);
+        }
+
+        public void set_status(string state) {
+            status_label.visible = true;
+
+            if (state == "requested") {
+                status_label.label =  _("Calling…");
+            } else if (state == "ringing") {
+                status_label.label = _("Ringing…");
+            } else if (state == "establishing") {
+                status_label.label = _("Connecting…");
+            } else {
+                status_label.visible = false;
+            }
+        }
+
+        private void reveal_or_hide_controls() {
+            if (controls_active && name_label.visible) {
+                title_box.opacity = 1;
+                menu_button.opacity = 1;
+            } else {
+                title_box.opacity = 0;
+                menu_button.opacity = 0;
+            }
+            if (is_highest_row && controls_active) {
+                outer_box.get_style_context().add_class("call-header-bar");
+            } else {
+                outer_box.get_style_context().remove_class("call-header-bar");
+            }
+        }
+    }
+}
\ No newline at end of file