Finish syncing UI with extension state

Add active mode indicators to popup. Add handling of locked zoom & alignment indicator to both popup and UI. Improve message passing through Comms.

src/common/enums/VideoAlignmentType.enum.ts

@@ -4,7 +4,8 @@ enum VideoAlignmentType {
   Right = 2,
   Top = 3,
   Bottom = 4,
-  Default = -1
+  Default = -1,
+  Custom = -2,
 };
 
 export default VideoAlignmentType;

src/common/interfaces/ScalingParamsBroadcast.interface.ts

@@ -1,3 +1,4 @@
+import VideoAlignmentType from '@src/common/enums/VideoAlignmentType.enum';
 import { Ar } from '@src/common/interfaces/ArInterface';
 import { Stretch } from '@src/common/interfaces/StretchInterface';
 
@@ -6,6 +7,12 @@ export interface ScalingParamsBroadcast {
     x: number,
     y: number
   },
+  videoAlignment: {
+    x: VideoAlignmentType,
+    y: VideoAlignmentType,
+    xPos?: number,
+    yPos?: number,
+  }
   lastAr: Ar,
   manualZoom: boolean,
   stretch: Stretch,

src/ext/UWContent.ts

@@ -1,5 +1,5 @@
 import Debug from '@src/ext/conf/Debug';
-import CommsClient from '@src/ext/module/comms/CommsClient';
+import CommsClient, { CommsOrigin } from '@src/ext/module/comms/CommsClient';
 import EventBus from '@src/ext/module/EventBus';
 import KeyboardHandler from '@src/ext/module/kbm/KeyboardHandler';
 import { ComponentLogger } from '@src/ext/module/logging/ComponentLogger';
@@ -82,7 +82,7 @@ export default class UWContent {
         this.siteSettings = this.settings.getSiteSettings({site: window.location.hostname, isIframe: this.isIframe, parentHostname: this.parentHostname});
       }
 
-      this.eventBus = new EventBus({name: 'content-script'});
+      this.eventBus = new EventBus({name: 'content-script', commsOrigin: CommsOrigin.ContentScript});
       this.eventBus.subscribe(
         'uw-restart',
         {

src/ext/UWServer.ts

@@ -7,6 +7,7 @@ import CommsServer from '@src/ext/module/comms/CommsServer';
 import BrowserDetect from '@src/ext/conf/BrowserDetect';
 import { HostInfo } from '@src/common/interfaces/HostData.interface';
 import { ExtensionEnvironment } from '@src/common/interfaces/SettingsInterface';
+import { CommsOrigin } from '@src/ext/module/comms/CommsClient';
 
 
 const BASE_LOGGING_STYLES = {
@@ -81,7 +82,7 @@ export default class UWServer {
       this.settings = new Settings({logAggregator: this.logAggregator});
       await this.settings.init();
 
-      this.eventBus = new EventBus({isUWServer: true});
+      this.eventBus = new EventBus({isUWServer: true, commsOrigin: CommsOrigin.Server});
 
       this.eventBus.subscribeMulti(this.eventBusCommands, this);
 
@@ -105,6 +106,11 @@ export default class UWServer {
   //#region CSS management
 
   async injectCss(css, sender) {
+    if (!sender?.tab?.id) {
+      // console.warn('invalid injectCss received!');
+      return;
+    }
+
     this.logger.info('injectCss', 'Trying to inject CSS into tab', sender.tab.id, ', frameId:', sender.frameId, 'css:\n', css)
     if (!css) {
       return;
@@ -125,6 +131,11 @@ export default class UWServer {
     }
   }
   async removeCss(css, sender) {
+    if (!sender?.tab) {
+      // console.warn('invalid removeCss received!');
+      return;
+    }
+
     try {
       await chrome.scripting.removeCSS({
         target: {
@@ -141,6 +152,10 @@ export default class UWServer {
     }
   }
   async replaceCss(oldCss, newCss, sender) {
+    if (!sender?.tab) {
+      // console.warn('invalid replaceCss received!');
+      return;
+    }
     if (oldCss !== newCss) {
       this.removeCss(oldCss, sender);
       this.injectCss(newCss, sender);
@@ -197,6 +212,10 @@ export default class UWServer {
   }
 
   registerVideo(sender) {
+    if (!sender?.tab?.url) {
+      // console.warn('invalid registerVideo received!');
+      return;
+    }
     this.logger.info('registerVideo', 'Registering video.\nsender:', sender);
 
     const tabHostname = this.extractHostname(sender.tab.url);
@@ -235,6 +254,11 @@ export default class UWServer {
   }
 
   unregisterVideo(sender) {
+    if (!sender?.tab) {
+      // console.warn('invalid unregisterVideo received!');
+      return;
+    }
+
     this.logger.info('unregisterVideo', 'Unregistering video.\nsender:', sender);
     if (this.videoTabs[sender.tab.id]) {
       if ( Object.keys(this.videoTabs[sender.tab.id].frames).length <= 1) {
@@ -254,6 +278,10 @@ export default class UWServer {
   }
 
   async getCurrentSite(sender: Runtime.MessageSender) {
+    // if (!sender?.tab) {
+    //   console.warn('invalid unregisterVideo received!');
+    //   return;
+    // }
     const site = await this.getVideoTab();
 
     // Don't propagate 'INVALID SITE' to the popup.

src/ext/module/EventBus.ts

@@ -24,7 +24,7 @@ export default class EventBus {
 
   // private uiUri = window.location.href;
 
-  constructor(options?: {isUWServer?: boolean, name?: string, commsOrigin?: CommsOrigin}) {
+  constructor(options?: {isUWServer?: boolean, name?: string, commsOrigin: CommsOrigin}) {
     if (!options?.isUWServer) {
       this.setupIframeTunnelling();
     }
@@ -119,11 +119,16 @@ export default class EventBus {
       const i = this.lastExecutedCommandIndex++ % this.lastExecutedCommandIds.length;
       this.lastExecutedCommandIds[i] = context.commandId;
     }
+    if (!context.origin) {
+      context.origin = this.commsOrigin;
+    }
 
     if (
       this.comms
-      && context?.origin !== CommsOrigin.Server
+      && (  // ensure each message only enters commsServer once!
-      && !context?.borderCrossings?.commsServer
+        this.commsOrigin === context.origin         // if these two differ, we already sent that message through Comms once,
+        || this.commsOrigin === CommsOrigin.Server  // CommsServer needs to forward everything, otherwise messages stop on
+      )
     ) {
       try {
         this.comms.sendMessage({command, config: commandData, context}, context);

src/ext/module/comms/CommsServer.ts

@@ -172,35 +172,47 @@ class CommsServer {
       context = message.context;
     }
 
+    /**
+     * Here's how message forwarding works:
+     *  * messages NOT originating from a content script get forwarded to content script
+     *  * messages NOT originating from extension popup get forwarded to extension popup
+     *
+     * This way, messages originating from background script get forwarded both to
+     * content script as well as popup for absolutely free.
+     */
+
+    forwardToContentScript:
+    {
       if (context?.origin !== CommsOrigin.ContentScript) {
         if (context?.comms.forwardTo === 'all') {
-        return this.sendToAll(message);
+          this.sendToAll(message);
+          break forwardToContentScript;
         }
-      if (context?.comms.forwardTo === 'active' || !context?.comms.forwardTo) {
+        if (context?.comms.forwardTo === 'active') {
-        return this.sendToActive(message);
+          this.sendToActive(message);
+          break forwardToContentScript;
         }
         if (context?.comms.forwardTo === 'contentScript') {
-        return this.sendToFrame(message, context.tab, context.frame, context.port);
+          this.sendToFrame(message, context.tab, context.frame, context.port);
+          break forwardToContentScript;
         }
-    }
+
-    if (context?.origin !== CommsOrigin.Popup) {
+        this.sendToActive(message);
-      if (context?.comms.forwardTo === 'popup') {
+        break forwardToContentScript;
-        return this.sendToPopup(message);
       }
     }
 
+    if (context?.origin !== CommsOrigin.Popup) {
+      this.sendToPopup(message);
+    }
+
     // okay I lied! Messages originating from content script can be forwarded to
-    // content scripts running in _other_ frames of the tab
+    // content scripts running in _other_ frames of the tab.
-    let forwarded = false;
     if (context?.origin === CommsOrigin.ContentScript) {
       if (context?.comms.forwardTo === 'all-frames') {
-        forwarded = true;
         this.sendToOtherFrames(message, context);
       }
     }
-    if (!forwarded) {
-      this.logger.warn('sendMessage', `message ${message.command ?? ''} was not forwarded to any destination!`,  {message, context});
-    }
   }
 
   /**

src/ext/module/uwui/ClientMenu.ts

@@ -1,9 +1,11 @@
 import AspectRatioType from '@src/common/enums/AspectRatioType.enum';
 import StretchType from '@src/common/enums/StretchType.enum';
+import VideoAlignmentType from '@src/common/enums/VideoAlignmentType.enum';
 import { ArVariant } from '@src/common/interfaces/ArInterface';
 import { MenuPosition, MenuConfig, MenuItemConfig } from '@src/common/interfaces/ClientUiMenu.interface';
 import { ScalingParamsBroadcast } from '@src/common/interfaces/ScalingParamsBroadcast.interface';
 import extensionCss from '@src/main.css?inline';
+import { setVideoAlignmentIndicatorState } from '@src/ui/utils/video-alignment-indicator-handling';
 
 export class ClientMenu {
 
@@ -425,6 +427,9 @@ export class ClientMenu {
   }
 
   markActiveElements(scalingParams: ScalingParamsBroadcast) {
+    if (!this._root) {
+      return;
+    }
     const currentlyActiveElements = this._root.querySelectorAll('.uw-active-within, .uw-active');
 
     for (const element of currentlyActiveElements) {
@@ -517,5 +522,28 @@ export class ClientMenu {
         zoomHSlider.value = Math.log2(scalingParams.effectiveZoom.y) as any;
       }
     }
+
+    const lockXYButton = this._root.querySelector('#_button_toggle_aspect_lock');
+    const sliderLockBar = this._root.querySelector('#slider-lock');
+
+    if (scalingParams.effectiveZoom.x === scalingParams.effectiveZoom.y) {
+      lockXYButton?.classList.add('uw-linked');
+      lockXYButton?.classList.remove('uw-unlinked');
+      sliderLockBar?.classList.add('uw-linked');
+      sliderLockBar?.classList.remove('uw-unlinked');
+    } else {
+      lockXYButton?.classList.add('uw-unlinked');
+      lockXYButton?.classList.remove('uw-linked');
+      sliderLockBar?.classList.add('uw-unlinked');
+      sliderLockBar?.classList.remove('uw-linked');
+    }
+
+    // set alignment indicator
+    const videoAlignmentIndicator = this._root.querySelector('#_uw_ui_alignment_indicator') as SVGSVGElement;
+    if (videoAlignmentIndicator) {
+      setVideoAlignmentIndicatorState(videoAlignmentIndicator, scalingParams.videoAlignment.x, scalingParams.videoAlignment.y);
+    }
+
+
   }
 }

src/ext/module/uwui/UI.ts

@@ -104,7 +104,7 @@ class UI {
         'broadcast-scaling-params': {
           function: (commandData: ScalingParamsBroadcast, context) => {
             this.currentScalingParams = commandData;
-            this.extensionMenu?.markActiveElements(commandData);
+            this.updateMenuStatus(commandData);
           }
         }
       });
@@ -427,7 +427,7 @@ class UI {
       this.extensionMenu = new ClientMenu(menuConfig);
       this.extensionMenu.mount(this.uiConfig.parentElement);
       if (this.currentScalingParams) {
-        this.extensionMenu.markActiveElements(this.currentScalingParams);
+        this.updateMenuStatus(this.currentScalingParams);
       }
 
       /**
@@ -541,6 +541,13 @@ class UI {
     }
   }
 
+  updateMenuStatus(scalingParams: ScalingParamsBroadcast) {
+    this.extensionMenu?.markActiveElements(scalingParams);
+
+    // we also need to handle this here
+    this.uiState.lockXY = scalingParams.effectiveZoom.x === scalingParams.effectiveZoom.y;
+  }
+
   createSettingsWindow(path?: string) {
     const iframe = document.createElement('iframe');
 

src/ext/module/video-data/VideoData.ts

@@ -7,6 +7,7 @@ import { RunLevel } from '@src/ext/enum/run-level.enum';
 import { Aard } from '@src/ext/module/aard/Aard';
 import { AardLegacy } from '@src/ext/module/aard/AardLegacy';
 import { hasDrm } from '@src/ext/module/ar-detect/DrmDetector';
+import { CommsOrigin } from '@src/ext/module/comms/CommsClient';
 import EventBus from '@src/ext/module/EventBus';
 import { ComponentLogger } from '@src/ext/module/logging/ComponentLogger';
 import { LogAggregator } from '@src/ext/module/logging/LogAggregator';
@@ -147,7 +148,7 @@ class VideoData {
     };
 
     if (!pageInfo.eventBus) {
-      this.eventBus = new EventBus({name: 'video-data'});
+      this.eventBus = new EventBus({name: 'video-data', commsOrigin: CommsOrigin.ContentScript});
     } else {
       this.eventBus = pageInfo.eventBus;
     }

src/ext/module/video-transform/Resizer.ts

@@ -64,6 +64,16 @@ class Resizer {
   currentVideoSettings: any;
 
   private effectiveZoom: {x: number, y: number} = {x: 1, y: 1};
+  private currentScalingParams: ScalingParamsBroadcast = {
+    effectiveZoom: {x: 1, y: 1},
+    lastAr: {type: AspectRatioType.Initial},
+    stretch: {type: StretchType.Default},
+    videoAlignment: {
+      x: VideoAlignmentType.Center,
+      y: VideoAlignmentType.Center
+    },
+    manualZoom: false
+  };
 
   private pendingAr?: {ar: Ar, lastAr?: Ar};
 
@@ -101,6 +111,11 @@ class Resizer {
         this.eventBus.send('announce-zoom', this.manualZoom ? {x: this.zoom.scale, y: this.zoom.scaleY} : this.zoom.effectiveZoom);
       }
     }],
+    'request-scaling-params': [{
+      function: () => {
+        this.eventBus.send('broadcast-scaling-params', this.currentScalingParams);
+      }
+    }],
     'set-ar': [{
       function: (config: any) => {
         this.manualZoom = false; // this only gets called from UI or keyboard shortcuts, making this action safe.
@@ -506,12 +521,15 @@ class Resizer {
       const translate = this.computeOffsets(stretchFactors, options?.ar);
       this.applyCss(stretchFactors, translate);
 
-      this.eventBus.send('broadcast-scaling-params', {
+      this.currentScalingParams = {
         effectiveZoom: {x: stretchFactors.xFactor, y: stretchFactors.yFactor},
+        videoAlignment: this.videoAlignment,
         lastAr: this.lastAr,
         manualZoom: this.manualZoom,
         stretch: this.stretcher.stretch
-      } as ScalingParamsBroadcast);
+      }
+
+      this.eventBus.send('broadcast-scaling-params', this.currentScalingParams);
     } catch (e) {
       this.logger.warn('applyScaling', 'error while applying CSS:', e);
       // don't apply CSS if there's an error

src/ui/components/segments/VideoSettings/VideoSettings.vue

@@ -7,6 +7,9 @@
       <ShortcutButton
         v-for="(command, index) of settings?.active.commands.crop"
         :key="index"
+        :classList="{
+          'border !border-primary-700 text-primary-500 active-option': currentCropCommand === `${command.action}-${command.arguments.type}-${command.arguments.ratio ?? 'x'}`
+        }"
         :label="command.label"
         :shortcut="getKeyboardShortcutLabel(command)"
         @click="execAction(command)"
@@ -18,6 +21,9 @@
       <ShortcutButton
         v-for="(command, index) of settings?.active.commands.zoom"
         :key="index"
+        :classList="{
+          'border !border-primary-700 text-primary-500 active-option': currentCropCommand === `${command.action}-${command.arguments.type}-${command.arguments.ratio ?? 'x'}`
+        }"
         :label="command.label"
         :shortcut="getKeyboardShortcutLabel(command)"
         @click="execAction(command)"
@@ -40,6 +46,10 @@
                 max="4"
                 :value="zoom.x"
                 @input="changeZoom($event.target.value, 'x')"
+                @pointerdown="zoomUpdatesDisabled = true"
+                @pointerup="zoomUpdatesDisabled = false"
+                @pointercancel="zoomUpdatesDisabled = false"
+                @pointerleave="zoomUpdatesDisabled = false"
             />
           </div>
         </div>
@@ -55,6 +65,10 @@
                 max="4"
                 :value="zoom.y"
                 @input="changeZoom($event.target.value, 'y')"
+                @pointerdown="zoomUpdatesDisabled = true"
+                @pointerup="zoomUpdatesDisabled = false"
+                @pointercancel="zoomUpdatesDisabled = false"
+                @pointerleave="zoomUpdatesDisabled = false"
             />
           </div>
         </div>
@@ -94,6 +108,9 @@
       <ShortcutButton
         v-for="(command, index) of settings?.active.commands.stretch"
         :key="index"
+        :classList="{
+          'border border-primary-700 text-primary-500 active-option': currentStretchCommand === `${command.action}-${command.arguments.type}-${command.arguments.ratio ?? 'x'}`
+        }"
         :label="command.label"
         :shortcut="getKeyboardShortcutLabel(command)"
         @click="execAction(command)"
@@ -102,6 +119,7 @@
 
     <h3>Align video</h3>
     <div
+      id="videoAlignmentController"
       ref="alignmentSvgContainer"
       class="w-full h-[12em] flex flex-row justify-center"
     ></div>
@@ -119,6 +137,10 @@ import KeyboardShortcutParserMixin from '@ui/utils/mixins/KeyboardShortcutParser
 import alignmentIndicatorSvg from '!!raw-loader!@ui/res/img/alignment-indicators.svg';
 import {setupVideoAlignmentIndicatorInteraction, setVideoAlignmentIndicatorState} from '@ui/utils/video-alignment-indicator-handling';
 import VideoAlignmentType from '@src/common/enums/VideoAlignmentType.enum';
+import { ScalingParamsBroadcast } from '@src/common/interfaces/ScalingParamsBroadcast.interface';
+import { ArVariant } from '@src/common/interfaces/ArInterface';
+import AspectRatioType from '@src/common/enums/AspectRatioType.enum';
+import StretchType from '@src/common/enums/StretchType.enum';
 
 export default defineComponent({
   components: {
@@ -139,21 +161,26 @@ export default defineComponent({
     return {
       zoom: {x: 0, y: 0}, // zoom is logarithmic, so "100%" is represented as 0 instead of 1.
       zoomOptions: {
-        lockAr: false,
+        lockAr: true,
       },
 
       alignmentSvgContainer: undefined as HTMLElement | undefined,
+      alignmentIndicatorSvg: undefined as SVGSVGElement | undefined,
+
+      currentCropCommand: '',
+      currentStretchCommand: '',
+      zoomUpdatesDisabled: false,
     }
   },
   created() {
-    console.log('created ....');
+    this.eventBus.subscribeMulti({
-    this.eventBus.subscribe(
+      'broadcast-scaling-params': {
-      'uw-config-broadcast',
+        function: (commandData: ScalingParamsBroadcast, context) => {
-      {
+          this.markActiveElements(commandData);
-        source: this,
-        function: (config) => this.handleConfigBroadcast(config)
         }
-    );
+      }
+    });
+
   },
   mounted() {
     this.alignmentSvgContainer = this.$refs.alignmentSvgContainer as HTMLElement;
@@ -161,10 +188,10 @@ export default defineComponent({
     if (this.alignmentSvgContainer) {
       this.alignmentSvgContainer.innerHTML = alignmentIndicatorSvg;
       const svgElement = this.alignmentSvgContainer.querySelector('svg') as SVGSVGElement;
-      console.log('svg element:', svgElement);
+      this.alignmentIndicatorSvg = svgElement;
+
       if (svgElement) {
         setupVideoAlignmentIndicatorInteraction(svgElement, (x: VideoAlignmentType, y: VideoAlignmentType) => {
-          console.log('clicked!');
           // Update selection visually
           setVideoAlignmentIndicatorState(svgElement, x, y);
 
@@ -174,6 +201,7 @@ export default defineComponent({
     }
 
     this.eventBus.send('get-ar');
+    this.eventBus.send('request-scaling-params');
   },
   destroyed() {
     this.eventBus.unsubscribeAll(this);
@@ -221,8 +249,70 @@ export default defineComponent({
     },
     align(alignmentX: VideoAlignmentType, alignmentY: VideoAlignmentType) {
       this.eventBus?.send('set-alignment', {x: alignmentX, y: alignmentY})
+    },
+
+    markActiveElements(scalingParams: ScalingParamsBroadcast) {
+      if (this.zoomUpdatesDisabled) {
+        return;
+      }
+      // we only set active options when manual zoom is NOT set
+      if (!scalingParams.manualZoom) {
+        const cropCommand = scalingParams.lastAr.variant === ArVariant.Zoom ? 'set-ar-zoom' : 'set-ar';
+
+        let typeCrop;
+        switch (scalingParams.lastAr.type) {
+          case AspectRatioType.Automatic:
+          case AspectRatioType.AutomaticUpdate:
+            typeCrop = `${AspectRatioType.Automatic}-x`;
+            break;
+          case AspectRatioType.Cover:
+          case AspectRatioType.FitWidth:
+          case AspectRatioType.FitHeight:
+            typeCrop = `${scalingParams.lastAr.type}-x`;
+            break;
+          case AspectRatioType.Cycle:
+          case AspectRatioType.Initial:
+            typeCrop = 'non-selectable';
+            break;
+          default:
+            typeCrop = `${scalingParams.lastAr.type}-${scalingParams.lastAr.ratio ?? 'x'}`;
         }
 
+        this.currentCropCommand = `${cropCommand}-${typeCrop}`;
+
+        let typeStretch;
+        switch (scalingParams.stretch.type) {
+          case StretchType.FixedSource:
+          case StretchType.Fixed:
+            typeStretch = `${scalingParams.stretch.type}-${scalingParams.stretch.ratio ?? 'x'}`;
+            break;
+          case StretchType.Default:
+          case StretchType.NoStretch:
+            typeStretch = `non-selectable`;
+            break;
+          default:
+            typeStretch = `${scalingParams.stretch.type}-x`;
+        }
+
+        this.currentStretchCommand = `set-stretch-${typeStretch}`;
+      } else {
+        this.currentCropCommand = '';
+        this.currentStretchCommand = '';
+      }
+
+      if (!this.zoomUpdatesDisabled) {
+        this.zoom = {
+          x: Math.log2(scalingParams.effectiveZoom.x),
+          y: Math.log2(scalingParams.effectiveZoom.y)
+        };
+      }
+
+      this.zoomOptions.lockAr = scalingParams.effectiveZoom.x === scalingParams.effectiveZoom.y;
+
+      if (this.alignmentIndicatorSvg) {
+        setVideoAlignmentIndicatorState(this.alignmentIndicatorSvg, scalingParams.videoAlignment.x, scalingParams.videoAlignment.y);
+      }
+    }
   }
 });
 </script>

src/ui/components/segments/VideoSettings/components/ShortcutButton.vue

@@ -16,7 +16,7 @@ export default defineComponent({
   props: {
     label: String,
     shortcut: String,
-    classList: String
+    classList: Object
   }
 });
 </script>

src/ui/res/styles/player-menu.css

@@ -448,8 +448,14 @@
       stroke: transparent;
     }
 
-    .selected {
+    .uw-active {
-      @apply fill-primary-400 stroke-primary-400;
+      @apply fill-primary-400 stroke-primary-400 text-primary-400 bg-primary-400;
+
+      path {
+        @apply fill-primary-300 stroke-primary-100;
+
+        filter: drop-shadow(0 0 0.5rem theme('colors.primary.400'));
+      }
     }
   }
 }

src/ui/utils/mixins/CommsMixin.vue

@@ -1,13 +1,6 @@
 <script lang="ts">
 export default {
   methods: {
-    handleConfigBroadcast(message) {
-      if (message.type === 'ar') {
-        this.resizerConfig.crop = message.config;
-      }
-
-      this.$nextTick( () => this.$forceUpdate() );
-    },
 
     /**
      * Sends commands to main content script in parent iframe

src/ui/utils/video-alignment-indicator-handling.ts

@@ -31,7 +31,7 @@ export function setVideoAlignmentIndicatorState(
   y: VideoAlignmentType
 ) {
   // reset all indicators
-  svg.querySelectorAll<SVGGElement>('g').forEach(g => g.classList.remove('selected'));
+  svg?.querySelectorAll<SVGGElement>('g').forEach(g => g.classList.remove('uw-active'));
 
   // select the appropriate square
   if (x === VideoAlignmentType.Default || y === VideoAlignmentType.Default) {
@@ -39,8 +39,10 @@ export function setVideoAlignmentIndicatorState(
   }
 
   const gId = `${positionMap[y]}-${positionMap[x]}`;
-  const selected = svg.getElementById(gId);
+  const selected = svg?.getElementById(gId);
-  if (selected) selected.classList.add('selected');
+  if (selected) {
+    selected.classList.add('uw-active');
+  }
 }
 
 /**
@@ -52,7 +54,7 @@ export function setupVideoAlignmentIndicatorInteraction(
   svg: SVGSVGElement,
   callback: (x: VideoAlignmentType, y: VideoAlignmentType) => void
 ) {
-  svg.querySelectorAll<SVGGElement>('g').forEach(g => {
+  svg?.querySelectorAll<SVGGElement>('g').forEach(g => {
     g.addEventListener('click', () => {
       const [y, x] = g.id.split('-');