Make widgets not reload (persistent) between center and top container

src/components/views/elements/AppTile.tsx

@@ -23,6 +23,7 @@ import classNames from 'classnames';
 import { MatrixCapabilities } from "matrix-widget-api";
 import { Room } from "matrix-js-sdk/src/models/room";
 import { logger } from "matrix-js-sdk/src/logger";
+import { EventSubscription } from 'fbemitter';
 
 import { MatrixClientPeg } from '../../../MatrixClientPeg';
 import AccessibleButton from './AccessibleButton';
@@ -46,6 +47,7 @@ import { IApp } from "../../../stores/WidgetStore";
 import { WidgetLayoutStore, Container } from "../../../stores/widgets/WidgetLayoutStore";
 import { OwnProfileStore } from '../../../stores/OwnProfileStore';
 import { UPDATE_EVENT } from '../../../stores/AsyncStore';
+import RoomViewStore from '../../../stores/RoomViewStore';
 import WidgetUtils from '../../../utils/WidgetUtils';
 
 interface IProps {
@@ -117,6 +119,7 @@ export default class AppTile extends React.Component<IProps, IState> {
     private persistKey: string;
     private sgWidget: StopGapWidget;
     private dispatcherRef: string;
+    private roomStoreToken: EventSubscription;
 
     constructor(props: IProps) {
         super(props);
@@ -135,9 +138,6 @@ export default class AppTile extends React.Component<IProps, IState> {
         }
 
         this.state = this.getNewState(props);
-        this.watchUserReady();
-
-        this.allowedWidgetsWatchRef = SettingsStore.watchSetting("allowedWidgets", null, this.onAllowedWidgetsChange);
     }
 
     private watchUserReady = () => {
@@ -163,6 +163,29 @@ export default class AppTile extends React.Component<IProps, IState> {
         return !!currentlyAllowedWidgets[props.app.eventId];
     };
 
+    private onWidgetLayoutChange = () => {
+        const room = MatrixClientPeg.get().getRoom(this.props.room.roomId);
+        const app = this.props.app;
+        const isActiveWidget = ActiveWidgetStore.instance.getWidgetPersistence(app.id);
+        const isVisibleOnScreen = WidgetLayoutStore.instance.isVisibleOnScreen(room, app.id);
+        if (!isVisibleOnScreen && !isActiveWidget) {
+            ActiveWidgetStore.instance.destroyPersistentWidget(app.id);
+            PersistedElement.destroyElement(this.persistKey);
+            this.sgWidget?.stopMessaging();
+        }
+    };
+
+    private onRoomViewStoreUpdate = () => {
+        if (this.props.room.roomId == RoomViewStore.getRoomId()) return;
+        const app = this.props.app;
+        const isActiveWidget = ActiveWidgetStore.instance.getWidgetPersistence(app.id);
+        if (!isActiveWidget) {
+            ActiveWidgetStore.instance.destroyPersistentWidget(app.id);
+            PersistedElement.destroyElement(this.persistKey);
+            this.sgWidget?.stopMessaging();
+        }
+    };
+
     /**
      * Set initial component state when the App wUrl (widget URL) is being updated.
      * Component props *must* be passed (rather than relying on this.props).
@@ -195,7 +218,7 @@ export default class AppTile extends React.Component<IProps, IState> {
             // Force the widget to be non-persistent (able to be deleted/forgotten)
             ActiveWidgetStore.instance.destroyPersistentWidget(this.props.app.id);
             PersistedElement.destroyElement(this.persistKey);
-            if (this.sgWidget) this.sgWidget.stop();
+            this.sgWidget?.stopMessaging();
         }
 
         this.setState({ hasPermissionToLoad });
@@ -218,7 +241,11 @@ export default class AppTile extends React.Component<IProps, IState> {
         if (this.sgWidget && this.state.hasPermissionToLoad) {
             this.startWidget();
         }
+        this.watchUserReady();
 
+        WidgetLayoutStore.instance.on(WidgetLayoutStore.emissionForRoom(this.props.room), this.onWidgetLayoutChange);
+        this.roomStoreToken = RoomViewStore.addListener(this.onRoomViewStoreUpdate);
+        this.allowedWidgetsWatchRef = SettingsStore.watchSetting("allowedWidgets", null, this.onAllowedWidgetsChange);
         // Widget action listeners
         this.dispatcherRef = dis.register(this.onAction);
     }
@@ -227,24 +254,14 @@ export default class AppTile extends React.Component<IProps, IState> {
         // Widget action listeners
         if (this.dispatcherRef) dis.unregister(this.dispatcherRef);
 
-        // if it's not remaining on screen, get rid of the PersistedElement container
-        if (!ActiveWidgetStore.instance.getWidgetPersistence(this.props.app.id)) {
-            ActiveWidgetStore.instance.destroyPersistentWidget(this.props.app.id);
-            PersistedElement.destroyElement(this.persistKey);
-        }
-
-        if (this.sgWidget) {
-            this.sgWidget.stop();
-        }
-
+        WidgetLayoutStore.instance.off(WidgetLayoutStore.emissionForRoom(this.props.room), this.onWidgetLayoutChange);
+        this.roomStoreToken?.remove();
         SettingsStore.unwatchSetting(this.allowedWidgetsWatchRef);
         OwnProfileStore.instance.removeListener(UPDATE_EVENT, this.onUserReady);
     }
 
     private resetWidget(newProps: IProps): void {
-        if (this.sgWidget) {
-            this.sgWidget.stop();
-        }
+        this.sgWidget?.stopMessaging();
         try {
             this.sgWidget = new StopGapWidget(newProps);
             this.sgWidget.on("preparing", this.onWidgetPreparing);
@@ -266,9 +283,7 @@ export default class AppTile extends React.Component<IProps, IState> {
         this.iframe = ref;
         if (ref) {
             try {
-                if (this.sgWidget) {
-                    this.sgWidget.start(ref);
-                }
+                this.sgWidget?.startMessaging(ref);
             } catch (e) {
                 logger.error("Failed to start widget", e);
             }
@@ -321,7 +336,7 @@ export default class AppTile extends React.Component<IProps, IState> {
         PersistedElement.destroyElement(this.persistKey);
         ActiveWidgetStore.instance.destroyPersistentWidget(this.props.app.id);
 
-        if (this.sgWidget) this.sgWidget.stop({ forceDestroy: true });
+        this.sgWidget?.stopMessaging({ forceDestroy: true });
     }
 
     private onWidgetPreparing = (): void => {
@@ -532,7 +547,7 @@ export default class AppTile extends React.Component<IProps, IState> {
                     // Also wrap the PersistedElement in a div to fix the height, otherwise
                     // AppTile's border is in the wrong place
 
-                    // For persistent apps in PiP we want the zIndex to be higher then for other persistent apps (100)
+                    // For persisted apps in PiP we want the zIndex to be higher then for other persisted apps (100)
                     // otherwise there are issues that the PiP view is drawn UNDER another widget (Persistent app) when dragged around.
                     const zIndexAboveOtherPersistentElements = 101;
 
@@ -569,6 +584,7 @@ export default class AppTile extends React.Component<IProps, IState> {
                 />
             );
         }
+
         let maxMinButton;
         if (!this.props.hideMaximiseButton) {
             const widgetIsMaximised = WidgetLayoutStore.instance.

src/components/views/rooms/AppsDrawer.tsx

@@ -189,7 +189,7 @@ export default class AppsDrawer extends React.Component<IProps, IState> {
     private onAction = (action: ActionPayload): void => {
         const hideWidgetKey = this.props.room.roomId + '_hide_widget_drawer';
         switch (action.action) {
-            case 'appsDrawer':
+            case "appsDrawer":
                 // Note: these booleans are awkward because localstorage is fundamentally
                 // string-based. We also do exact equality on the strings later on.
                 if (action.show) {
@@ -279,7 +279,7 @@ export default class AppsDrawer extends React.Component<IProps, IState> {
             drawer = <PersistentVResizer
                 room={this.props.room}
                 minHeight={100}
-                maxHeight={(this.props.maxHeight || !widgetIsMaxmised) ? this.props.maxHeight - 50 : undefined}
+                maxHeight={this.props.maxHeight - 50}
                 handleClass="mx_AppsContainer_resizerHandle"
                 handleWrapperClass="mx_AppsContainer_resizerHandleContainer"
                 className="mx_AppsContainer_resizer"

src/components/views/voip/PipView.tsx

@@ -30,7 +30,7 @@ import { replaceableComponent } from "../../../utils/replaceableComponent";
 import PictureInPictureDragger from './PictureInPictureDragger';
 import dis from '../../../dispatcher/dispatcher';
 import { Action } from "../../../dispatcher/actions";
-import { Container, WidgetLayoutStore } from '../../../stores/widgets/WidgetLayoutStore';
+import { WidgetLayoutStore } from '../../../stores/widgets/WidgetLayoutStore';
 import CallViewHeader from './CallView/CallViewHeader';
 import ActiveWidgetStore, { ActiveWidgetStoreEvent } from '../../../stores/ActiveWidgetStore';
 import { UPDATE_EVENT } from '../../../stores/AsyncStore';
@@ -242,9 +242,7 @@ export default class PipView extends React.Component<IProps, IState> {
 
         let userIsPartOfTheRoom = false;
         let fromAnotherRoom = false;
-        let notInRightPanel = false;
-        let notInCenterContainer = false;
-        let notInTopContainer = false;
+        let notVisible = false;
         if (wId) {
             const persistentWidgetInRoomId = ActiveWidgetStore.instance.getRoomId(wId);
             const persistentWidgetInRoom = MatrixClientPeg.get().getRoom(persistentWidgetInRoomId);
@@ -254,24 +252,16 @@ export default class PipView extends React.Component<IProps, IState> {
             if (!persistentWidgetInRoom) return null;
 
             const wls = WidgetLayoutStore.instance;
-
+            notVisible = !wls.isVisibleOnScreen(persistentWidgetInRoom, wId);
             userIsPartOfTheRoom = persistentWidgetInRoom.getMyMembership() == "join";
             fromAnotherRoom = this.state.viewedRoomId !== persistentWidgetInRoomId;
-
-            notInRightPanel =
-                !(RightPanelStore.instance.currentCard.phase == RightPanelPhases.Widget &&
-                    wId == RightPanelStore.instance.currentCard.state?.widgetId);
-            notInCenterContainer =
-                !wls.getContainerWidgets(persistentWidgetInRoom, Container.Center).some((app) => app.id == wId);
-            notInTopContainer =
-                !wls.getContainerWidgets(persistentWidgetInRoom, Container.Top).some(app => app.id == wId);
         }
 
         // The widget should only be shown as a persistent app (in a floating pip container) if it is not visible on screen
         // either, because we are viewing a different room OR because it is in none of the possible containers of the room view.
         const showWidgetInPip =
             (fromAnotherRoom && userIsPartOfTheRoom) ||
-            (notInRightPanel && notInCenterContainer && notInTopContainer && userIsPartOfTheRoom);
+            (notVisible && userIsPartOfTheRoom);
 
         this.setState({ showWidgetInPip });
     }

src/stores/right-panel/RightPanelStore.ts

@@ -14,14 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+import { EventSubscription } from 'fbemitter';
 import { logger } from "matrix-js-sdk/src/logger";
 
 import defaultDispatcher from '../../dispatcher/dispatcher';
 import { pendingVerificationRequestForUser } from '../../verification';
 import SettingsStore from "../../settings/SettingsStore";
 import { RightPanelPhases } from "./RightPanelStorePhases";
 import { ActionPayload } from "../../dispatcher/payloads";
-import { Action } from '../../dispatcher/actions';
 import { SettingLevel } from "../../settings/SettingLevel";
 import { UPDATE_EVENT } from '../AsyncStore';
 import { ReadyWatchingStore } from '../ReadyWatchingStore';
@@ -32,7 +32,7 @@ import {
     IRightPanelForRoom,
 } from './RightPanelStoreIPanelState';
 import { MatrixClientPeg } from "../../MatrixClientPeg";
-// import RoomViewStore from '../RoomViewStore';
+import RoomViewStore from '../RoomViewStore';
 
 const GROUP_PHASES = [
     RightPanelPhases.GroupMemberList,
@@ -41,12 +41,6 @@ const GROUP_PHASES = [
     RightPanelPhases.GroupMemberInfo,
 ];
 
-const MEMBER_INFO_PHASES = [
-    RightPanelPhases.RoomMemberInfo,
-    RightPanelPhases.Room3pidMemberInfo,
-    RightPanelPhases.EncryptionPanel,
-];
-
 /**
  * A class for tracking the state of the right panel between layouts and
  * sessions. This state includes a history for each room. Each history element
@@ -68,16 +62,18 @@ export default class RightPanelStore extends ReadyWatchingStore {
         [roomId: string]: IRightPanelForRoom;
     } = {};
 
+    private roomStoreToken: EventSubscription;
+
     private constructor() {
         super(defaultDispatcher);
         this.dispatcherRefRightPanelStore = defaultDispatcher.register(this.onDispatch);
     }
 
     protected async onReady(): Promise<any> {
         this.isReady = true;
-        // TODO RightPanelStore (will be addressed when dropping groups): This should be used instead of the onDispatch callback when groups are removed.
-        // RoomViewStore.on(UPDATE_EVENT, this.onRoomViewStoreUpdate);
+        this.roomStoreToken = RoomViewStore.addListener(this.onRoomViewStoreUpdate);
         MatrixClientPeg.get().on("crypto.verification.request", this.onVerificationRequestUpdate);
+        this.viewedRoomId = RoomViewStore.getRoomId();
         this.loadCacheFromSettings();
         this.emitAndUpdateSettings();
     }
@@ -91,8 +87,7 @@ export default class RightPanelStore extends ReadyWatchingStore {
     protected async onNotReady(): Promise<any> {
         this.isReady = false;
         MatrixClientPeg.get().off("crypto.verification.request", this.onVerificationRequestUpdate);
-        // TODO RightPanelStore (will be addressed when dropping groups): User this instead of the dispatcher.
-        // RoomViewStore.off(UPDATE_EVENT, this.onRoomViewStoreUpdate);
+        this.roomStoreToken.remove();
     }
 
     // Getters
@@ -373,45 +368,43 @@ export default class RightPanelStore extends ReadyWatchingStore {
     };
 
     onRoomViewStoreUpdate = () => {
-        // TODO: use this function instead of the onDispatch (the whole onDispatch can get removed!) as soon groups are removed
-        // this.viewedRoomId = RoomViewStore.getRoomId();
-        // this.isViewingRoom = true; // Is viewing room will of course be removed when removing groups
-        // // load values from byRoomCache with the viewedRoomId.
-        // this.loadCacheFromSettings();
+        // TODO: only use this function instead of the onDispatch (the whole onDispatch can get removed!) as soon groups are removed
+        this.viewedRoomId = RoomViewStore.getRoomId();
+        this.isViewingRoom = true; // Is viewing room will of course be removed when removing groups
+        // load values from byRoomCache with the viewedRoomId.
+        this.loadCacheFromSettings();
+        this.emitAndUpdateSettings();
     };
 
     onDispatch = (payload: ActionPayload) => {
         switch (payload.action) {
-            case 'view_group':
-            case Action.ViewRoom: {
+            case 'view_group': {
                 if (payload.room_id === this.viewedRoomId) break; // skip this transition, probably a permalink
 
                 // Put group in the same/similar view to what was open from the previously viewed room
                 // Is contradictory to the new "per room" philosophy but it is the legacy behavior for groups.
-                if ((this.isViewingRoom ? Action.ViewRoom : "view_group") != payload.action) {
-                    if (payload.action == Action.ViewRoom && MEMBER_INFO_PHASES.includes(this.currentCard?.phase)) {
-                        // switch from group to room
-                        this.setRightPanelCache({ phase: RightPanelPhases.RoomMemberList, state: {} });
-                    } else if (
-                        payload.action == "view_group" &&
-                        this.currentCard?.phase === RightPanelPhases.GroupMemberInfo
-                    ) {
-                        // switch from room to group
-                        this.setRightPanelCache({ phase: RightPanelPhases.GroupMemberList, state: {} });
-                    }
+
+                if (
+                    this.currentCard?.phase === RightPanelPhases.GroupMemberInfo
+                ) {
+                    // switch from room to group
+                    this.setRightPanelCache({ phase: RightPanelPhases.GroupMemberList, state: {} });
                 }
 
                 // Update the current room here, so that all the other functions dont need to be room dependant.
                 // The right panel store always will return the state for the current room.
                 this.viewedRoomId = payload.room_id;
-                this.isViewingRoom = payload.action == Action.ViewRoom;
+                this.isViewingRoom = false;
                 // load values from byRoomCache with the viewedRoomId.
                 if (this.isReady) {
                     // we need the client to be ready to get the events form the ids of the settings
                     // the loading will be done in the onReady function (to catch up with the changes done here before it was ready)
                     // all the logic in this case is not necessary anymore as soon as groups are dropped and we use: onRoomViewStoreUpdate
                     this.loadCacheFromSettings();
-                    this.emitAndUpdateSettings();
+
+                    // DO NOT EMIT. Emitting breaks iframe refs by triggering a render
+                    // for the room view and calling the iframe ref changed function
+                    // this.emitAndUpdateSettings();
                 }
                 break;
             }

src/stores/widgets/StopGapWidget.ts

@@ -255,8 +255,11 @@ export class StopGapWidget extends EventEmitter {
             });
         }
     };
-
-    public start(iframe: HTMLIFrameElement) {
+    /**
+     * This starts the messaging for the widget if it is not in the state `started` yet.
+     * @param iframe the iframe the widget should use
+     */
+    public startMessaging(iframe: HTMLIFrameElement): any {
         if (this.started) return;
         const allowedCapabilities = this.appTileProps.whitelistCapabilities || [];
         const driver = new StopGapWidgetDriver(allowedCapabilities, this.mockWidget, this.kind, this.roomId);
@@ -407,7 +410,12 @@ export class StopGapWidget extends EventEmitter {
         }
     }
 
-    public stop(opts = { forceDestroy: false }) {
+    /**
+     * Stops the widget messaging for if it is started. Skips stopping if it is an active
+     * widget.
+     * @param opts
+     */
+    public stopMessaging(opts = { forceDestroy: false }) {
         if (!opts?.forceDestroy && ActiveWidgetStore.instance.getPersistentWidgetId() === this.mockWidget.id) {
             logger.log("Skipping destroy - persistent widget");
             return;