Queue media preview (#449)

* output url

* Basic image previews

* Split out task item component

* Move task actions to context menu

* simplify

* Move spinner

* Lift context menu to tab scope

* Better tag

* Fix placeholder style

* nit

* Correctly handle cancelled

* nit

* Split out result item as separate component

* nit

* Fix center crop

* nit

* Simplify task item

* Flat list

* Show prompt id

* Make image draggable

* Disable preview for dragging

* Fix key

* Correctly handle task in expanded view

* Add preview

src/components/sidebar/tabs/queue/TaskItem.vue

@@ -0,0 +1,144 @@
+<template>
+  <!-- @contextmenu="handleContextMenu" -->
+  <div class="task-item">
+    <div class="task-result-preview">
+      <div v-if="task.displayStatus === TaskItemDisplayStatus.Completed">
+        <ResultItem v-if="flatOutputs.length" :result="flatOutputs[0]" />
+      </div>
+      <i
+        v-else-if="task.displayStatus === TaskItemDisplayStatus.Running"
+        class="pi pi-spin pi-spinner"
+      ></i>
+      <span v-else-if="task.displayStatus === TaskItemDisplayStatus.Pending"
+        >...</span
+      >
+      <i
+        v-else-if="task.displayStatus === TaskItemDisplayStatus.Cancelled"
+        class="pi pi-exclamation-triangle"
+      ></i>
+      <i
+        v-else-if="task.displayStatus === TaskItemDisplayStatus.Failed"
+        class="pi pi-exclamation-circle"
+      ></i>
+    </div>
+
+    <div class="task-item-details">
+      <div class="tag-wrapper">
+        <Tag :severity="taskTagSeverity(task.displayStatus)">
+          <span v-html="taskStatusText(task.displayStatus)"></span>
+          <span v-if="task.isHistory" class="task-time">
+            {{ formatTime(task.executionTimeInSeconds) }}
+          </span>
+          <span v-if="isFlatTask" class="task-prompt-id">
+            {{ task.promptId.split('-')[0] }}
+          </span>
+        </Tag>
+      </div>
+      <div class="tag-wrapper">
+        <Tag v-if="task.isHistory && flatOutputs.length > 1">
+          <span>{{ flatOutputs.length }}</span>
+        </Tag>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import Tag from 'primevue/tag'
+import ResultItem from './ResultItem.vue'
+import { TaskItemDisplayStatus, type TaskItemImpl } from '@/stores/queueStore'
+
+const props = defineProps<{
+  task: TaskItemImpl
+  isFlatTask: boolean
+}>()
+
+const flatOutputs = props.task.flatOutputs
+
+const emit = defineEmits<{
+  (e: 'contextmenu', { task: TaskItemImpl, event: MouseEvent }): void
+}>()
+
+const handleContextMenu = (e: MouseEvent) => {
+  emit('contextmenu', { task: props.task, event: e })
+}
+
+const taskTagSeverity = (status: TaskItemDisplayStatus) => {
+  switch (status) {
+    case TaskItemDisplayStatus.Pending:
+      return 'secondary'
+    case TaskItemDisplayStatus.Running:
+      return 'info'
+    case TaskItemDisplayStatus.Completed:
+      return 'success'
+    case TaskItemDisplayStatus.Failed:
+      return 'danger'
+    case TaskItemDisplayStatus.Cancelled:
+      return 'warn'
+  }
+}
+
+const taskStatusText = (status: TaskItemDisplayStatus) => {
+  switch (status) {
+    case TaskItemDisplayStatus.Pending:
+      return 'Pending'
+    case TaskItemDisplayStatus.Running:
+      return 'Running'
+    case TaskItemDisplayStatus.Completed:
+      return '<i class="pi pi-check" style="font-weight: bold"></i>'
+    case TaskItemDisplayStatus.Failed:
+      return 'Failed'
+    case TaskItemDisplayStatus.Cancelled:
+      return 'Cancelled'
+  }
+}
+
+const formatTime = (time?: number) => {
+  if (time === undefined) {
+    return ''
+  }
+  return `${time.toFixed(2)}s`
+}
+</script>
+
+<style scoped>
+.task-result-preview {
+  aspect-ratio: 1 / 1;
+  overflow: hidden;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  width: 100%;
+  height: 100%;
+}
+
+.task-result-preview i,
+.task-result-preview span {
+  font-size: 2rem;
+}
+
+.task-item {
+  display: flex;
+  flex-direction: column;
+  border-radius: 4px;
+  overflow: hidden;
+  position: relative;
+}
+
+.task-item-details {
+  position: absolute;
+  bottom: 0;
+  padding: 0.6rem;
+  display: flex;
+  justify-content: space-between;
+  width: 100%;
+}
+
+/* In dark mode, transparent background color for tags is not ideal for tags that
+are floating on top of images. */
+.tag-wrapper {
+  background-color: var(--p-primary-contrast-color);
+  border-radius: 6px;
+  display: inline-flex;
+}
+</style>