1 files changed, 67 insertions, 7 deletions

diff --git a/src/components/notifications/notifications.js b/src/components/notifications/notifications.js
index c8f1ebcb..d499d3d6 100644
--- a/src/components/notifications/notifications.js
+++ b/src/components/notifications/notifications.js
@@ -1,3 +1,4 @@
+import { computed } from 'vue'
 import { mapGetters } from 'vuex'
 import Notification from '../notification/notification.vue'
 import NotificationFilters from './notification_filters.vue'
@@ -9,10 +10,12 @@ import {
 } from '../../services/notification_utils/notification_utils.js'
 import FaviconService from '../../services/favicon_service/favicon_service.js'
 import { library } from '@fortawesome/fontawesome-svg-core'
-import { faCircleNotch } from '@fortawesome/free-solid-svg-icons'
+import { faCircleNotch, faArrowUp, faMinus } from '@fortawesome/free-solid-svg-icons'
 
 library.add(
-  faCircleNotch
+  faCircleNotch,
+  faArrowUp,
+  faMinus
 )
 
 const DEFAULT_SEEN_TO_DISPLAY_COUNT = 30
@@ -23,16 +26,17 @@ const Notifications = {
     NotificationFilters
   },
   props: {
-    // Disables display of panel header
-    noHeading: Boolean,
     // Disables panel styles, unread mark, potentially other notification-related actions
     // meant for "Interactions" timeline
     minimalMode: Boolean,
     // Custom filter mode, an array of strings, possible values 'mention', 'repeat', 'like', 'follow', used to override global filter for use in "Interactions" timeline
-    filterMode: Array
+    filterMode: Array,
+    // Disable teleporting (i.e. for /users/user/notifications)
+    disableTeleport: Boolean
   },
   data () {
     return {
+      showScrollTop: false,
       bottomedOut: false,
       // How many seen notifications to display in the list. The more there are,
       // the heavier the page becomes. This count is increased when loading
@@ -40,6 +44,11 @@ const Notifications = {
       seenToDisplayCount: DEFAULT_SEEN_TO_DISPLAY_COUNT
     }
   },
+  provide () {
+    return {
+      popoversZLayer: computed(() => this.popoversZLayer)
+    }
+  },
   computed: {
     mainClass () {
       return this.minimalMode ? '' : 'panel panel-default'
@@ -60,15 +69,46 @@ const Notifications = {
       return this.unseenNotifications.length
     },
     unseenCountTitle () {
-      return this.unseenCount + (this.unreadChatCount)
+      return this.unseenCount + (this.unreadChatCount) + this.unreadAnnouncementCount
     },
     loading () {
       return this.$store.state.statuses.notifications.loading
     },
+    noHeading () {
+      const { layoutType } = this.$store.state.interface
+      return this.minimalMode || layoutType === 'mobile'
+    },
+    teleportTarget () {
+      const { layoutType } = this.$store.state.interface
+      const map = {
+        wide: '#notifs-column',
+        mobile: '#mobile-notifications'
+      }
+      return map[layoutType] || '#notifs-sidebar'
+    },
+    popoversZLayer () {
+      const { layoutType } = this.$store.state.interface
+      return layoutType === 'mobile' ? 'navbar' : null
+    },
     notificationsToDisplay () {
       return this.filteredNotifications.slice(0, this.unseenCount + this.seenToDisplayCount)
     },
-    ...mapGetters(['unreadChatCount'])
+    noSticky () { return this.$store.getters.mergedConfig.disableStickyHeaders },
+    ...mapGetters(['unreadChatCount', 'unreadAnnouncementCount'])
+  },
+  mounted () {
+    this.scrollerRef = this.$refs.root.closest('.column.-scrollable')
+    if (!this.scrollerRef) {
+      this.scrollerRef = this.$refs.root.closest('.mobile-notifications')
+    }
+    if (!this.scrollerRef) {
+      this.scrollerRef = this.$refs.root.closest('.column.main')
+    }
+    this.scrollerRef.addEventListener('scroll', this.updateScrollPosition)
+  },
+  unmounted () {
+    if (!this.scrollerRef) return
+    this.scrollerRef.removeEventListener('scroll', this.updateScrollPosition)
   },
   watch: {
     unseenCountTitle (count) {
@@ -79,9 +119,29 @@ const Notifications = {
         FaviconService.clearFaviconBadge()
         this.$store.dispatch('setPageTitle', '')
       }
+    },
+    teleportTarget () {
+      // handle scroller change
+      this.$nextTick(() => {
+        this.scrollerRef.removeEventListener('scroll', this.updateScrollPosition)
+        this.scrollerRef = this.$refs.root.closest('.column.-scrollable')
+        if (!this.scrollerRef) {
+          this.scrollerRef = this.$refs.root.closest('.mobile-notifications')
+        }
+        this.scrollerRef.addEventListener('scroll', this.updateScrollPosition)
+        this.updateScrollPosition()
+      })
     }
   },
   methods: {
+    scrollToTop () {
+      const scrollable = this.scrollerRef
+      scrollable.scrollTo({ top: this.$refs.root.offsetTop })
+      // this.$refs.root.scrollIntoView({ behavior: 'smooth', block: 'start' })
+    },
+    updateScrollPosition () {
+      this.showScrollTop = this.$refs.root.offsetTop < this.scrollerRef.scrollTop
+    },
     markAsSeen () {
       this.$store.dispatch('markNotificationsAsSeen')
       this.seenToDisplayCount = DEFAULT_SEEN_TO_DISPLAY_COUNT