Allow views to have no selection.

src/components/surround.ts

@@ -94,6 +94,7 @@ export class FrigateCardSurround extends LitElement {
       {
         targetView: this.view.view,
         mediaType: this.fetchMedia,
+        select: 'latest',
       },
     );
   }

src/components/timeline-core.ts

@@ -490,6 +490,7 @@ export class FrigateCardTimelineCore extends LitElement {
               properties.what === 'background'
                 ? properties.time
                 : this._timeline.getWindow().end,
+            select: 'time',
           },
         );
       }
@@ -513,6 +514,7 @@ export class FrigateCardTimelineCore extends LitElement {
           {
             targetView: 'recording',
             targetTime: properties.time,
+            select: 'time',
           },
         );
       }
@@ -661,6 +663,7 @@ export class FrigateCardTimelineCore extends LitElement {
       query,
       {
         targetView: options?.targetView,
+        select: 'latest',
       },
     );
     if (!view) {

src/components/viewer.ts

@@ -120,6 +120,7 @@ export class FrigateCardViewer extends LitElement {
           this.view,
           {
             targetView: 'recording',
+            select: 'latest',
           },
         );
       } else {
@@ -132,6 +133,7 @@ export class FrigateCardViewer extends LitElement {
           {
             targetView: 'media',
             mediaType: mediaType,
+            select: 'latest',
           },
         );
       }
@@ -543,13 +545,19 @@ export class FrigateCardViewerCarousel extends LitElement {
    * @returns A template to display to the user.
    */
   protected _render(): TemplateResult | void {
-    if ((this.view?.queryResults?.getResultsCount() ?? 0) === 0) {
+    const resultCount = this.view?.queryResults?.getResultsCount() ?? 0;
+    if (!resultCount) {
       return dispatchMessageEvent(this, localize('common.no_media'), 'info', {
         icon: 'mdi:multimedia',
       });
     }
 
-    const media = this.view?.queryResults?.getSelectedResult();
+    // If there's no selected media, just choose the last (most recent one) to
+    // avoid rendering a blank. This situation should not occur in practice, as
+    // this view should not be called without a selected media.
+    const media =
+      this.view?.queryResults?.getSelectedResult() ??
+      this.view?.queryResults?.getResult(resultCount - 1);
     if (!media || !this.view || !this.view.queryResults) {
       return;
     }

src/utils/media-to-view.ts

@@ -16,6 +16,8 @@ import { errorToConsole } from './basic';
 import { MediaQuery } from '../camera-manager/types';
 import { MEDIA_CHUNK_SIZE_DEFAULT } from '../const';
 
+type ResultSelectType = 'latest' | 'time' | 'none';
+
 export const changeViewToRecentEventsForCameraAndDependents = async (
   element: HTMLElement,
   hass: HomeAssistant,
@@ -25,6 +27,7 @@ export const changeViewToRecentEventsForCameraAndDependents = async (
   options?: {
     mediaType?: ClipsOrSnapshotsOrAll;
     targetView?: FrigateCardView;
+    select?: ResultSelectType;
   },
 ): Promise<void> => {
   const cameraIDs = getAllDependentCameras(cameraManager, view.camera);
@@ -42,6 +45,7 @@ export const changeViewToRecentEventsForCameraAndDependents = async (
   (
     await executeMediaQueryForView(element, hass, cameraManager, view, queries, {
       targetView: options?.targetView,
+      select: options?.select,
     })
   )?.dispatchChangeEvent(element);
 };
@@ -81,6 +85,7 @@ export const changeViewToRecentRecordingForCameraAndDependents = async (
   view: View,
   options?: {
     targetView?: 'recording' | 'recordings';
+    select?: ResultSelectType;
   },
 ): Promise<void> => {
   const cameraIDs = getAllDependentCameras(cameraManager, view.camera);
@@ -100,6 +105,7 @@ export const changeViewToRecentRecordingForCameraAndDependents = async (
   (
     await executeMediaQueryForView(element, hass, cameraManager, view, queries, {
       targetView: options?.targetView,
+      select: options?.select,
     })
   )?.dispatchChangeEvent(element);
 };
@@ -133,6 +139,7 @@ export const executeMediaQueryForView = async (
     targetCameraID?: string;
     targetView?: FrigateCardView;
     targetTime?: Date;
+    select?: ResultSelectType;
   },
 ): Promise<View | null> => {
   let mediaArray: ViewMedia[] | null;
@@ -153,12 +160,16 @@ export const executeMediaQueryForView = async (
   if (!mediaArray) {
     return null;
   }
-  // Select the last item by default (which is the most recent).
-  const selectedIndex = mediaArray.length ? mediaArray.length - 1 : undefined;
-  const queryResults = new MediaQueriesResults(mediaArray, selectedIndex);
+
+  const queryResults = new MediaQueriesResults(
+    mediaArray,
+    options?.select === 'latest' && mediaArray.length
+      ? mediaArray.length - 1
+      : undefined,
+  );
   let viewerContext: ViewContext | undefined = {};
 
-  if (options?.targetTime) {
+  if (options?.select === 'time' && options?.targetTime) {
     queryResults.selectBestResult((media) =>
       findClosestMediaIndex(media, options.targetTime as Date),
     );

src/view/media-queries-results.ts

@@ -11,7 +11,9 @@ export class MediaQueriesResults {
     if (results) {
       this.setResults(results);
     }
-    this.selectResult(selectedIndex ?? 0);
+    if (selectedIndex !== undefined) {
+      this.selectResult(selectedIndex);
+    }
   }
 
   public clone(): MediaQueriesResults {