Fix modified tooltip (exact timestamp) flickering on/off because of timestamp updates every second. Made the tooltip follow mouse cursor.

frontend/src/components/FileModified.vue

@@ -1,22 +1,86 @@
 <template>
   <td class="modified right">
-    <time :data-tooltip=tooltip :datetime=datetime>{{ doc.modified }}</time>
+    <time
+      :datetime=datetime
+      @mouseenter="startHover"
+      @mousemove="updatePosition"
+      @mouseleave="endHover"
+    >{{ modified }}</time>
+    <Teleport to="body">
+      <div v-if="showTooltip" class="cursor-tooltip" :style="tooltipStyle">
+        {{ tooltipText }}
+      </div>
+    </Teleport>
   </td>
 </template>
 
 <script setup lang="ts">
 import { Doc } from '@/repositories/Document'
-import { computed } from 'vue'
+import { formatUnixDate } from '@/utils'
+import { computed, ref } from 'vue'
+
+const props = defineProps<{
+    doc: Doc
+    now: number
+}>()
+
+// Reference props.now to trigger reactivity when time updates
+const modified = computed(() => {
+  props.now  // trigger reactivity
+  return formatUnixDate(props.doc.mtime)
+})
 
 const datetime = computed(() =>
   new Date(1000 * props.doc.mtime).toISOString().replace('.000Z', 'Z')
 )
 
-const tooltip = computed(() =>
-  datetime.value.replace('T', '\n').replace('Z', ' UTC')
+const tooltipText = computed(() =>
+  datetime.value.replace('T', ' ').replace('Z', ' UTC')
 )
 
-const props = defineProps<{
-    doc: Doc
-}>()
+const showTooltip = ref(false)
+const mouseX = ref(0)
+const mouseY = ref(0)
+let hoverTimer: ReturnType<typeof setTimeout> | null = null
+
+const tooltipStyle = computed(() => ({
+  left: `${mouseX.value + 12}px`,
+  top: `${mouseY.value + 12}px`,
+}))
+
+const startHover = (e: MouseEvent) => {
+  mouseX.value = e.clientX
+  mouseY.value = e.clientY
+  hoverTimer = setTimeout(() => {
+    showTooltip.value = true
+  }, 500)
+}
+
+const updatePosition = (e: MouseEvent) => {
+  mouseX.value = e.clientX
+  mouseY.value = e.clientY
+}
+
+const endHover = () => {
+  if (hoverTimer) {
+    clearTimeout(hoverTimer)
+    hoverTimer = null
+  }
+  showTooltip.value = false
+}
 </script>
+
+<style scoped>
+.cursor-tooltip {
+  position: fixed;
+  z-index: 10000;
+  padding: .5rem 1rem;
+  border-radius: 3rem 0 3rem 0;
+  box-shadow: 0 0 1rem var(--accent-color);
+  background-color: var(--accent-color);
+  color: var(--primary-color);
+  white-space: pre;
+  pointer-events: none;
+  font-size: 1rem;
+}
+</style>