add recently used emojis panel to emoji picker (#283)

~~(not intended for merging yet, just submitting this for preliminary review and discussion)~~

this patch adds a tab with recently used emojis to the emoji picker: https://akko.lain.gay/notice/ASoGCtyoiXbYPJjqpk

there's a couple of things i'm ~~still trying to work out~~ not totally happy with and i'd appreciate any feedback on them:

* the recentEmojis getter is called very frequently and has to do a possibly somewhat expensive lookup of emoji objects by their `displayName` each time, which i'm not sure is ideal
* ~~emoji reactions on posts added through the picker are picked up by the recentEmojis module, but clicks on existing emoji reactions are not, because `addReaction` in `react_button.js` only currently receives the replacement and not the full emoji object (if there even is one wherever that method is called from)~~ this works now and does the same stupid full search of all emojis by their name which i guess is less bad because this only happens when you hit a reaction emoji button that already existed

Reviewed-on: #283
Co-authored-by: flisk <akkomadev.mvch71fq@flisk.xyz>
Co-committed-by: flisk <akkomadev.mvch71fq@flisk.xyz>

src/components/emoji_picker/emoji_picker.js

@@ -51,6 +51,7 @@ const EmojiPicker = {
     onEmoji (emoji) {
       const value = emoji.imageUrl ? `:${emoji.displayText}:` : emoji.replacement
       this.$emit('emoji', { insertion: value, keepOpen: this.keepOpen })
+      this.$store.commit('emojiUsed', emoji)
     },
     onWheel (e) {
       e.preventDefault()
@@ -96,6 +97,7 @@ const EmojiPicker = {
       )
     },
     emojis () {
+      const recentEmojis = this.$store.getters.recentEmojis
       const standardEmojis = this.$store.state.instance.emoji || []
       const customEmojis = this.sortedEmoji
       const emojiPacks = []
@@ -108,6 +110,15 @@ const EmojiPicker = {
         })
       })
       return [
+        {
+          id: 'recent',
+          text: this.$t('emoji.recent'),
+          first: {
+            imageUrl: '',
+            replacement: '🕒',
+          },
+          emojis: this.filterByKeyword(recentEmojis)
+        },
         {
           id: 'standard',
           text: this.$t('emoji.unicode'),

src/components/emoji_reactions/emoji_reactions.js

@@ -3,6 +3,11 @@ import UserListPopover from '../user_list_popover/user_list_popover.vue'
 
 const EMOJI_REACTION_COUNT_CUTOFF = 12
 
+const findEmojiByReplacement = (state, replacement) => {
+  const allEmojis = state.instance.emoji.concat(state.instance.customEmoji)
+  return allEmojis.find(emoji => emoji.replacement === replacement)
+}
+
 const EmojiReactions = {
   name: 'EmojiReactions',
   components: {
@@ -54,6 +59,8 @@ const EmojiReactions = {
     },
     reactWith (emoji) {
       this.$store.dispatch('reactWithEmoji', { id: this.status.id, emoji })
+      const emojiObject = findEmojiByReplacement(this.$store.state, emoji)
+      this.$store.commit('emojiUsed', emojiObject)
     },
     unreact (emoji) {
       this.$store.dispatch('unreactWithEmoji', { id: this.status.id, emoji })

src/i18n/en.json

@@ -86,7 +86,8 @@
         "load_all_hint": "Loaded first {saneAmount} emoji, loading all emoji may cause performance issues.",
         "search_emoji": "Search for an emoji",
         "stickers": "Stickers",
-        "unicode": "Unicode emoji"
+        "unicode": "Unicode emoji",
+        "recent": "Recently used"
     },
     "errors": {
         "storage_unavailable": "Pleroma could not access browser storage. Your login or your local settings won't be saved and you might encounter unexpected issues. Try enabling cookies."

src/lib/persisted_state.js

@@ -19,7 +19,8 @@ const saveImmedeatelyActions = [
   'setOption',
   'setClientData',
   'setToken',
-  'clearToken'
+  'clearToken',
+  'emojiUsed',
 ]
 
 const defaultStorage = (() => {

src/main.js

@@ -22,6 +22,7 @@ import announcementsModule from './modules/announcements.js'
 import editStatusModule from './modules/editStatus.js'
 import statusHistoryModule from './modules/statusHistory.js'
 import tagModule from './modules/tags.js'
+import recentEmojisModule from './modules/recentEmojis.js'
 
 import { createI18n } from 'vue-i18n'
 
@@ -47,7 +48,8 @@ const persistedStateOptions = {
   paths: [
     'config',
     'users.lastLoginName',
-    'oauth'
+    'oauth',
+    'recentEmojis.emojis',
   ]
 };
 
@@ -98,7 +100,8 @@ const persistedStateOptions = {
       announcements: announcementsModule,
       editStatus: editStatusModule,
       statusHistory: statusHistoryModule,
-      tags: tagModule
+      tags: tagModule,
+      recentEmojis: recentEmojisModule,
     },
     plugins,
     strict: false // Socket modifies itself, let's ignore this for now.

src/modules/recentEmojis.js

@@ -0,0 +1,50 @@
+// each row is 7 emojis, 6 rows chosen arbitrarily. i don't think more than
+// that are going to be useful.
+const RECENT_MAX = 7 * 6
+
+const defaultState = {
+  emojis: [],
+}
+
+const recentEmojis = {
+  state: defaultState,
+
+  mutations: {
+    emojiUsed ({ emojis }, emoji) {
+      if (emoji.displayText === undefined || emoji.displayText === null) {
+        console.error('emojiUsed was called with a bad emoji object: ', emoji)
+        return
+      } else if (emoji.displayText.includes('@')) {
+        console.error('emojiUsed was called with a remote emoji: ', emoji)
+        return
+      }
+
+      const i = emojis.indexOf(emoji.displayText)
+
+      if (i === -1) {
+        // not in `emojis` yet, insert and truncate if necessary
+        const newLength = emojis.unshift(emoji.displayText)
+        if (newLength > RECENT_MAX) {
+          emojis.pop()
+        }
+      } else if (i !== 0) {
+        // emoji is already in `emojis` but needs to be bumped to the top
+        emojis.splice(i, 1)
+        emojis.unshift(emoji.displayText)
+      }
+    },
+  },
+
+  getters: {
+    recentEmojis: (state, getters, rootState) => state.emojis.reduce((objects, displayText) => {
+      const allEmojis = rootState.instance.emoji.concat(rootState.instance.customEmoji)
+      let emojiObject = allEmojis.find(emoji => emoji.displayText === displayText)
+      if (emojiObject !== undefined) {
+        objects.push(emojiObject)
+      }
+      return objects
+    }, []),
+  },
+}
+
+export default recentEmojis