Only show core navigation elements (call/chat/notification/info) when a widget is maximised

src/components/structures/RoomView.tsx

@@ -2179,7 +2179,21 @@ export class RoomView extends React.Component<IRoomProps, IRoomState> {
             // TODO-video MainSplitContentType.Video:
             //     break;
         }
-
+        let excludedRightPanelPhaseButtons = [RightPanelPhases.Timeline];
+        let onAppsClick = this.onAppsClick;
+        let onForgetClick = this.onForgetClick;
+        let onSearchClick = this.onSearchClick;
+        if (this.state.mainSplitContentType === MainSplitContentType.MaximisedWidget) {
+            // Disable phase buttons and action button to have a simplified header when a widget is maximised
+            // and enable (not disable) the RightPanelPhases.Timeline button
+            excludedRightPanelPhaseButtons = [
+                RightPanelPhases.ThreadPanel,
+                RightPanelPhases.PinnedMessages,
+            ];
+            onAppsClick = null;
+            onForgetClick = null;
+            onSearchClick = null;
+        }
         return (
             <RoomContext.Provider value={this.state}>
                 <main className={mainClasses} ref={this.roomView} onKeyDown={this.onReactKeyDown}>
@@ -2192,12 +2206,13 @@ export class RoomView extends React.Component<IRoomProps, IRoomState> {
                             searchInfo={searchInfo}
                             oobData={this.props.oobData}
                             inRoom={myMembership === 'join'}
-                            onSearchClick={this.onSearchClick}
-                            onForgetClick={(myMembership === "leave") ? this.onForgetClick : null}
+                            onSearchClick={onSearchClick}
+                            onForgetClick={(myMembership === "leave") ? onForgetClick : null}
                             e2eStatus={this.state.e2eStatus}
-                            onAppsClick={this.state.hasPinnedWidgets ? this.onAppsClick : null}
+                            onAppsClick={this.state.hasPinnedWidgets ? onAppsClick : null}
                             appsShown={this.state.showApps}
                             onCallPlaced={this.onCallPlaced}
+                            excludedRightPanelPhaseButtons={excludedRightPanelPhaseButtons}
                         />
                         <MainSplit panel={rightPanel} resizeNotifier={this.props.resizeNotifier}>
                             <div className="mx_RoomView_body">

src/components/structures/ThreadView.tsx

@@ -43,6 +43,7 @@ import { _t } from '../../languageHandler';
 import ThreadListContextMenu from '../views/context_menus/ThreadListContextMenu';
 import RightPanelStore from '../../stores/RightPanelStore';
 import SettingsStore from '../../settings/SettingsStore';
+import { WidgetLayoutStore } from '../../stores/widgets/WidgetLayoutStore';
 
 interface IProps {
     room: Room;
@@ -209,6 +210,12 @@ export default class ThreadView extends React.Component<IProps, IState> {
         if (!SettingsStore.getValue("feature_maximised_widgets")) {
             previousPhase = RightPanelPhases.ThreadPanel;
         }
+
+        // change the previous phase to the threadPanel in case there is no maximised widget anymore
+        if (!WidgetLayoutStore.instance.hasMaximisedWidget(this.props.room)) {
+            previousPhase = RightPanelPhases.ThreadPanel;
+        }
+
         // Make sure the previous Phase is always one of the two: Timeline or ThreadPanel
         if (![RightPanelPhases.ThreadPanel, RightPanelPhases.Timeline].includes(previousPhase)) {
             previousPhase = RightPanelPhases.ThreadPanel;

src/components/views/right_panel/RoomHeaderButtons.tsx

@@ -81,6 +81,7 @@ const TimelineCardHeaderButton = ({ room, isHighlighted, onClick }) => {
 
 interface IProps {
     room?: Room;
+    excludedRightPanelPhaseButtons?: Array<RightPanelPhases>;
 }
 
 @replaceableComponent("views.right_panel.RoomHeaderButtons")
@@ -150,38 +151,54 @@ export default class RoomHeaderButtons extends HeaderButtons<IProps> {
     };
 
     public renderButtons() {
-        return <>
+        const rightPanelPhaseButtons: Map<RightPanelPhases, any> = new Map();
+
+        rightPanelPhaseButtons.set(RightPanelPhases.PinnedMessages,
             <PinnedMessagesHeaderButton
                 room={this.props.room}
                 isHighlighted={this.isPhase(RightPanelPhases.PinnedMessages)}
-                onClick={this.onPinnedMessagesClicked}
-            />
+                onClick={this.onPinnedMessagesClicked} />,
+        );
+        rightPanelPhaseButtons.set(RightPanelPhases.Timeline,
             <TimelineCardHeaderButton
                 room={this.props.room}
                 isHighlighted={this.isPhase(RightPanelPhases.Timeline)}
-                onClick={this.onTimelineCardClicked}
-            />
-            { SettingsStore.getValue("feature_thread") && <HeaderButton
-                name="threadsButton"
-                title={_t("Threads")}
-                onClick={this.onThreadsPanelClicked}
-                isHighlighted={this.isPhase(RoomHeaderButtons.THREAD_PHASES)}
-                analytics={['Right Panel', 'Threads List Button', 'click']}
-            /> }
+                onClick={this.onTimelineCardClicked} />,
+        );
+        rightPanelPhaseButtons.set(RightPanelPhases.ThreadPanel,
+            SettingsStore.getValue("feature_thread")
+                ? <HeaderButton
+                    name="threadsButton"
+                    title={_t("Threads")}
+                    onClick={this.onThreadsPanelClicked}
+                    isHighlighted={this.isPhase(RoomHeaderButtons.THREAD_PHASES)}
+                    analytics={['Right Panel', 'Threads List Button', 'click']} />
+                : null,
+        );
+        rightPanelPhaseButtons.set(RightPanelPhases.NotificationPanel,
             <HeaderButton
                 name="notifsButton"
                 title={_t('Notifications')}
                 isHighlighted={this.isPhase(RightPanelPhases.NotificationPanel)}
                 onClick={this.onNotificationsClicked}
-                analytics={['Right Panel', 'Notification List Button', 'click']}
-            />
+                analytics={['Right Panel', 'Notification List Button', 'click']} />,
+        );
+        rightPanelPhaseButtons.set(RightPanelPhases.RoomSummary,
             <HeaderButton
                 name="roomSummaryButton"
                 title={_t('Room Info')}
                 isHighlighted={this.isPhase(ROOM_INFO_PHASES)}
                 onClick={this.onRoomSummaryClicked}
-                analytics={['Right Panel', 'Room Summary Button', 'click']}
-            />
+                analytics={['Right Panel', 'Room Summary Button', 'click']} />,
+        );
+
+        return <>
+            {
+                Array.from(rightPanelPhaseButtons.keys()).map((phase) =>
+                    ( this.props.excludedRightPanelPhaseButtons.includes(phase)
+                        ? null
+                        : rightPanelPhaseButtons.get(phase)))
+            }
         </>;
     }
 }

src/components/views/rooms/RoomHeader.tsx

@@ -39,6 +39,7 @@ import { SearchScope } from './SearchBar';
 import { ContextMenuTooltipButton } from '../../structures/ContextMenu';
 import RoomContextMenu from "../context_menus/RoomContextMenu";
 import { contextMenuBelow } from './RoomTile';
+import { RightPanelPhases } from '../../../stores/RightPanelStorePhases';
 
 export interface ISearchInfo {
     searchTerm: string;
@@ -57,6 +58,7 @@ interface IProps {
     e2eStatus: E2EStatus;
     appsShown: boolean;
     searchInfo: ISearchInfo;
+    excludedRightPanelPhaseButtons?: Array<RightPanelPhases>;
 }
 
 interface IState {
@@ -68,6 +70,7 @@ export default class RoomHeader extends React.Component<IProps, IState> {
     static defaultProps = {
         editing: false,
         inRoom: false,
+        excludedRightPanelPhaseButtons: [],
     };
 
     constructor(props, context) {
@@ -263,7 +266,7 @@ export default class RoomHeader extends React.Component<IProps, IState> {
                     { searchStatus }
                     { topicElement }
                     { rightRow }
-                    <RoomHeaderButtons room={this.props.room} />
+                    <RoomHeaderButtons room={this.props.room} excludedRightPanelPhaseButtons={this.props.excludedRightPanelPhaseButtons} />
                 </div>
             </div>
         );