improve performance by caching pinned status ids into user object

src/components/user_profile/user_profile.js

@@ -42,9 +42,6 @@ const UserProfile = {
     timeline () {
       return this.$store.state.statuses.timelines.user
     },
-    pinnedStatuses () {
-      return filter(this.timeline.statuses, { pinned: true })
-    },
     favorites () {
       return this.$store.state.statuses.timelines.favorites
     },

src/components/user_profile/user_profile.vue

@@ -5,13 +5,15 @@
     <tab-switcher :renderOnlyFocused="true" ref="tabSwitcher">
       <div :label="$t('user_card.statuses')" :disabled="!user.statuses_count">
         <div class="timeline">
-          <Conversation
-            v-for="status in pinnedStatuses"
-            class="status-fadein"
-            :key="status.id"
-            :statusoid="status"
-            :collapsable="true"
-          />
+          <template v-for="statusId in user.pinnedStatuseIds">
+            <Conversation
+              v-if="timeline.statusesObject[statusId]"
+              class="status-fadein"
+              :key="statusId"
+              :statusoid="timeline.statusesObject[statusId]"
+              :collapsable="true"
+            />
+          </template>
         </div>
         <Timeline
           :count="user.statuses_count"

src/modules/statuses.js

@@ -424,7 +424,7 @@ export const mutations = {
       newStatus.favoritedBy.push(user)
     }
   },
-  setPinned (state, { status }) {
+  setPinned (state, status) {
     const newStatus = state.allStatusesObject[status.id]
     newStatus.pinned = status.pinned
   },
@@ -543,11 +543,11 @@ const statuses = {
     },
     pinStatus ({ rootState, commit }, statusId) {
       return rootState.api.backendInteractor.pinOwnStatus(statusId)
-        .then((status) => commit('setPinned', { status }))
+        .then((status) => commit('setPinned', status))
     },
     unpinStatus ({ rootState, commit }, statusId) {
       rootState.api.backendInteractor.unpinOwnStatus(statusId)
-        .then((status) => commit('setPinned', { status }))
+        .then((status) => commit('setPinned', status))
     },
     retweet ({ rootState, commit }, status) {
       // Optimistic retweeting...

src/modules/users.js

@@ -165,6 +165,15 @@ export const mutations = {
       state.currentUser.muteIds.push(muteId)
     }
   },
+  setPinned (state, status) {
+    const user = state.usersObject[status.user.id]
+    const index = user.pinnedStatuseIds.indexOf(status.id)
+    if (status.pinned && index === -1) {
+      user.pinnedStatuseIds.push(status.id)
+    } else if (!status.pinned && index !== -1) {
+      user.pinnedStatuseIds.splice(index, 1)
+    }
+  },
   setUserForStatus (state, status) {
     status.user = state.usersObject[status.user.id]
   },
@@ -318,13 +327,17 @@ const users = {
       store.commit('addNewUsers', users)
       store.commit('addNewUsers', retweetedUsers)
 
-      // Reconnect users to statuses
       each(statuses, (status) => {
+        // Reconnect users to statuses
         store.commit('setUserForStatus', status)
+        // Set pinned statuses to user
+        store.commit('setPinned', status)
       })
-      // Reconnect users to retweets
       each(compact(map(statuses, 'retweeted_status')), (status) => {
+        // Reconnect users to retweets
         store.commit('setUserForStatus', status)
+        // Set pinned retweets to user
+        store.commit('setPinned', status)
       })
     },
     addNewNotifications (store, { notifications }) {

src/services/entity_normalizer/entity_normalizer.service.js

@@ -131,6 +131,8 @@ export const parseUser = (data) => {
   output.statuses_count = data.statuses_count
   output.friendIds = []
   output.followerIds = []
+  output.pinnedStatuseIds = []
+
   if (data.pleroma) {
     output.follow_request_count = data.pleroma.follow_request_count
   }