Timeline virtual scrolling

src/components/conversation/conversation.js

@@ -44,7 +44,8 @@ const conversation = {
     'isPage',
     'pinnedStatusIdsObject',
     'inProfile',
-    'profileUserId'
+    'profileUserId',
+    'virtualHidden'
   ],
   created () {
     if (this.isPage) {
@@ -52,6 +53,13 @@ const conversation = {
     }
   },
   computed: {
+    hideStatus () {
+      if (this.$refs.statusComponent && this.$refs.statusComponent[0]) {
+        return this.virtualHidden && this.$refs.statusComponent[0].suspendable
+      } else {
+        return this.virtualHidden
+      }
+    },
     status () {
       return this.$store.state.statuses.allStatusesObject[this.statusId]
     },
@@ -102,6 +110,10 @@ const conversation = {
     },
     isExpanded () {
       return this.expanded || this.isPage
+    },
+    hiddenStyle () {
+      const height = (this.status && this.status.virtualHeight) || '120px'
+      return this.virtualHidden ? { height } : {}
     }
   },
   components: {
@@ -121,6 +133,12 @@ const conversation = {
       if (value) {
         this.fetchConversation()
       }
+    },
+    virtualHidden (value) {
+      this.$store.dispatch(
+        'setVirtualHeight',
+        { statusId: this.statusId, height: `${this.$el.clientHeight}px` }
+      )
     }
   },
   methods: {

src/components/conversation/conversation.vue

@@ -1,5 +1,7 @@
 <template>
   <div
+    v-if="!hideStatus"
+    :style="hiddenStyle"
     class="Conversation"
     :class="{ '-expanded' : isExpanded, 'panel' : isExpanded }"
   >
@@ -18,6 +20,7 @@
     <status
       v-for="status in conversation"
       :key="status.id"
+      ref="statusComponent"
       :inline-expanded="collapsable && isExpanded"
       :statusoid="status"
       :expandable="!isExpanded"
@@ -33,6 +36,10 @@
       @toggleExpanded="toggleExpanded"
     />
   </div>
+  <div
+    v-else
+    :style="hiddenStyle"
+  />
 </template>
 
 <script src="./conversation.js"></script>
@@ -53,8 +60,8 @@
     .conversation-status {
       border-color: $fallback--border;
       border-color: var(--border, $fallback--border);
-      border-left: 4px solid $fallback--cRed;
-      border-left: 4px solid var(--cRed, $fallback--cRed);
+      border-left-color: $fallback--cRed;
+      border-left-color: var(--cRed, $fallback--cRed);
     }
 
     .conversation-status:last-child {