fix: set devMode in CallView component

src/components/CallView/CallView.vue

@@ -16,7 +16,9 @@
 			<EmptyCallView v-if="showEmptyCallView" :is-sidebar="isSidebar" />
 
 			<div id="videos">
-				<div v-if="!isGrid || !callParticipantModels.length" class="video__promoted" :class="{'full-page': showFullPage}">
+				<div v-if="devMode ? !isGrid : (!isGrid || !callParticipantModels.length)"
+					class="video__promoted"
+					:class="{'full-page': showFullPage}">
 					<!-- Selected video override mode -->
 					<VideoVue v-if="showSelectedVideo && selectedCallParticipantModel"
 						:key="selectedVideoPeerId"
@@ -78,11 +80,22 @@
 						:is-one-to-one="isOneToOne"
 						:is-sidebar="isSidebar"
 						@force-promote-video="forcePromotedModel = $event" />
+
+					<div v-else-if="devMode && !isGrid"
+						class="dev-mode-video--promoted">
+						<img :alt="placeholderName(6)" :src="placeholderImage(6)">
+						<VideoBottomBar :has-shadow="false"
+							:model="placeholderModel(6)"
+							:shared-data="placeholderSharedData(6)"
+							:token="token"
+							:participant-name="placeholderName(6)"
+							is-big />
+					</div>
 				</div>
 
 				<!-- Stripe or fullscreen grid depending on `isGrid` -->
 				<Grid v-if="!isSidebar"
-					:is-stripe="!isGrid || !callParticipantModels.length"
+					:is-stripe="devMode ? !isGrid : (!isGrid || !callParticipantModels.length)"
 					:is-recording="isRecording"
 					:token="token"
 					:has-pagination="true"
@@ -92,6 +105,7 @@
 					:local-call-participant-model="localCallParticipantModel"
 					:shared-datas="sharedDatas"
 					v-bind="$attrs"
+					:dev-mode.sync="devMode"
 					@select-video="handleSelectVideo"
 					@click-local-video="handleClickLocalVideo" />
 
@@ -120,6 +134,7 @@
 
 <script>
 import debounce from 'debounce'
+import { ref } from 'vue'
 
 import { showMessage } from '@nextcloud/dialogs'
 import { subscribe, unsubscribe } from '@nextcloud/event-bus'
@@ -131,9 +146,11 @@ import LocalVideo from './shared/LocalVideo.vue'
 import PresenterOverlay from './shared/PresenterOverlay.vue'
 import ReactionToaster from './shared/ReactionToaster.vue'
 import Screen from './shared/Screen.vue'
+import VideoBottomBar from './shared/VideoBottomBar.vue'
 import VideoVue from './shared/VideoVue.vue'
 import ViewerOverlayCallView from './shared/ViewerOverlayCallView.vue'
 
+import { placeholderImage, placeholderModel, placeholderName, placeholderSharedData } from './Grid/gridPlaceholders.ts'
 import { SIMULCAST } from '../../constants.js'
 import { fetchPeers } from '../../services/callsService.js'
 import { getTalkConfig } from '../../services/CapabilitiesManager.ts'
@@ -146,13 +163,14 @@ export default {
 
 	components: {
 		EmptyCallView,
-		ViewerOverlayCallView,
 		Grid,
 		LocalVideo,
 		PresenterOverlay,
 		ReactionToaster,
 		Screen,
+		VideoBottomBar,
 		VideoVue,
+		ViewerOverlayCallView,
 	},
 
 	props: {
@@ -173,10 +191,14 @@ export default {
 	},
 
 	setup() {
+		// For debug and screenshot purposes. Set to true to enable
+		const devMode = ref(false)
+
 		return {
 			localMediaModel,
 			localCallParticipantModel,
 			callParticipantCollection,
+			devMode,
 		}
 	},
 
@@ -329,7 +351,7 @@ export default {
 		},
 
 		showEmptyCallView() {
-			return !this.callParticipantModels.length && !this.screenSharingActive
+			return !this.callParticipantModels.length && !this.screenSharingActive && !this.devMode
 		},
 
 		supportedReactions() {
@@ -440,6 +462,11 @@ export default {
 
 	methods: {
 		t,
+		// Placeholder data for devMode and screenshotMode
+		placeholderImage,
+		placeholderName,
+		placeholderModel,
+		placeholderSharedData,
 		/**
 		 * Updates data properties that depend on the CallParticipantModels.
 		 *
@@ -752,6 +779,22 @@ export default {
 		// doesn't affect screen shares, as it's a different MediaStream
 		position: static;
 	}
+
+	.dev-mode-video--promoted {
+		position: absolute;
+		width: 100%;
+		height: 100%;
+		display: flex;
+		justify-content: center;
+	}
+
+	.dev-mode-video--promoted img {
+		position: absolute;
+		height: 100%;
+		aspect-ratio: 4 / 3;
+		object-fit: cover;
+		border-radius: var(--border-radius-element, calc(var(--default-clickable-area) / 2));
+	}
 }
 
 .local-video {