timeline panel nav (#131)

Reviewed-on: https://akkoma.dev/AkkomaGang/pleroma-fe/pulls/131

src/components/timeline_menu_tabs/timeline_menu_tabs.js

@@ -0,0 +1,61 @@
+import Popover from '../popover/popover.vue'
+import TimelineMenuContent from './timeline_menu_content.vue'
+import { library } from '@fortawesome/fontawesome-svg-core'
+import {
+  faChevronDown
+} from '@fortawesome/free-solid-svg-icons'
+
+library.add(faChevronDown)
+
+// Route -> i18n key mapping, exported and not in the computed
+// because nav panel benefits from the same information.
+export const timelineNames = () => {
+  return {
+    'friends': 'nav.home_timeline',
+    'bookmarks': 'nav.bookmarks',
+    'dms': 'nav.dms',
+    'public-timeline': 'nav.public_tl',
+    'public-external-timeline': 'nav.twkn',
+    'bubble-timeline': 'nav.bubble_timeline'
+  }
+}
+
+const TimelineMenuTabs = {
+  components: {
+    Popover,
+    TimelineMenuContent
+  },
+  data () {
+    return {
+      isOpen: false
+    }
+  },
+  created () {
+    if (timelineNames()[this.$route.name]) {
+      this.$store.dispatch('setLastTimeline', this.$route.name)
+    }
+  },
+  computed: {
+    currentUser () {
+      return this.$store.state.users.currentUser
+    },
+    privateMode () {
+      return this.$store.state.instance.private
+    }
+  },
+  methods: {
+    timelineName () {
+      const route = this.$route.name
+      if (route === 'tag-timeline') {
+        return '#' + this.$route.params.tag
+      }
+      if (route === 'list-timeline') {
+        return this.$store.getters.findListTitle(this.$route.params.id)
+      }
+      const i18nkey = timelineNames()[this.$route.name]
+      return i18nkey ? this.$t(i18nkey) : route
+    }
+  }
+}
+
+export default TimelineMenuTabs