unified layout-setting code and made an option to control or disable

third column behavior

src/App.js

@@ -98,22 +98,22 @@ export default {
     },
     layoutType () { return this.$store.state.interface.layoutType },
     privateMode () { return this.$store.state.instance.private },
-    reverseLayout () { return this.$store.getters.mergedConfig.sidebarRight },
+    reverseLayout () {
+      const { thirdColumnMode, sidebarRight: reverseSetting } = this.$store.getters.mergedConfig
+      if (this.layoutType !== 'wide') {
+        return reverseSetting
+      } else {
+        return thirdColumnMode === 'notifications' ? reverseSetting : !reverseSetting
+      }
+    },
     noSticky () { return this.$store.getters.mergedConfig.disableStickyHeaders },
     showScrollbars () { return this.$store.getters.mergedConfig.showScrollbars },
     ...mapGetters(['mergedConfig'])
   },
   methods: {
     updateMobileState () {
-      const mobileLayout = windowWidth() <= 800
-      const wideLayout = windowWidth() >= 1300
-      const layoutHeight = windowHeight()
-      const layoutType = wideLayout ? 'wide' : (mobileLayout ? 'mobile' : 'normal')
-      const changed = layoutType !== this.layoutType
-      if (changed) {
-        this.$store.dispatch('setLayoutType', layoutType)
-      }
-      this.$store.dispatch('setLayoutHeight', layoutHeight)
+      this.$store.dispatch('setLayoutWidth', windowWidth())
+      this.$store.dispatch('setLayoutHeight', windowHeight())
     }
   }
 }

src/boot/after_store.js

@@ -8,7 +8,7 @@ import App from '../App.vue'
 import routes from './routes'
 import VBodyScrollLock from 'src/directives/body_scroll_lock'
 
-import { windowWidth } from '../services/window_utils/window_utils'
+import { windowWidth, windowHeight } from '../services/window_utils/window_utils'
 import { getOrCreateApp, getClientToken } from '../services/new_api/oauth.js'
 import backendInteractorService from '../services/backend_interactor_service/backend_interactor_service.js'
 import { CURRENT_VERSION } from '../services/theme_data/theme_data.service.js'
@@ -332,11 +332,8 @@ const checkOAuthToken = async ({ store }) => {
 }
 
 const afterStoreSetup = async ({ store, i18n }) => {
-  // TODO cleanup copypasta
-  const mobileLayout = windowWidth() <= 800
-  const wideLayout = windowWidth() >= 1300
-  const layoutType = wideLayout ? 'wide' : (mobileLayout ? 'mobile' : 'normal')
-  store.dispatch('setLayoutType', layoutType)
+  store.dispatch('setLayoutWidth', windowWidth())
+  store.dispatch('setLayoutHeight', windowHeight())
 
   FaviconService.initFaviconService()
 

src/components/settings_modal/tabs/general_tab.js

@@ -38,6 +38,11 @@ const GeneralTab = {
         value: mode,
         label: this.$t(`settings.mention_link_display_${mode}`)
       })),
+      thirdColumnModeOptions: ['none', 'notifications', 'postform'].map(mode => ({
+        key: mode,
+        value: mode,
+        label: this.$t(`settings.conversation_display_${mode}`)
+      })),
       loopSilentAvailable:
       // Firefox
       Object.getOwnPropertyDescriptor(HTMLVideoElement.prototype, 'mozHasAudio') ||

src/components/settings_modal/tabs/general_tab.vue

@@ -70,6 +70,15 @@
             {{ $t('settings.show_scrollbars') }}
           </BooleanSetting>
         </li>
+        <li>
+          <ChoiceSetting
+            id="thirdColumnMode"
+            path="thirdColumnMode"
+            :options="thirdColumnModeOptions"
+          >
+            {{ $t('settings.third_column_mode') }}
+          </ChoiceSetting>
+        </li>
         <li>
           <BooleanSetting
             path="alwaysShowNewPostButton"

src/modules/config.js

@@ -46,6 +46,7 @@ export const defaultState = {
   pauseOnUnfocused: true,
   stopGifs: true,
   replyVisibility: 'all',
+  thirdColumnMode: 'notifications',
   notificationVisibility: {
     follows: true,
     mentions: true,
@@ -165,6 +166,9 @@ const config = {
         case 'interfaceLanguage':
           messages.setLanguage(this.getters.i18n, value)
           break
+        case 'thirdColumnMode':
+          dispatch('setLayoutWidth', undefined)
+          break
       }
     }
   }

src/modules/interface.js

@@ -72,6 +72,9 @@ const interfaceMod = {
     setLayoutHeight (state, value) {
       state.layoutHeight = value
     },
+    setLayoutWidth (state, value) {
+      state.layoutWidth = value
+    },
     setLastTimeline (state, value) {
       state.lastTimeline = value
     }
@@ -86,9 +89,6 @@ const interfaceMod = {
     setNotificationPermission ({ commit }, permission) {
       commit('setNotificationPermission', permission)
     },
-    setLayoutType ({ commit }, value) {
-      commit('setLayoutType', value)
-    },
     closeSettingsModal ({ commit }) {
       commit('closeSettingsModal')
     },
@@ -133,6 +133,24 @@ const interfaceMod = {
     setLayoutHeight ({ commit }, value) {
       commit('setLayoutHeight', value)
     },
+    // value is optional, assuming it was cached prior
+    setLayoutWidth ({ commit, state, rootGetters }, value) {
+      let width = value
+      if (value !== undefined) {
+        commit('setLayoutWidth', value)
+      } else {
+        width = state.layoutWidth
+      }
+      const mobileLayout = width <= 800
+      const normalOrMobile = mobileLayout ? 'mobile' : 'normal'
+      const { thirdColumnMode } = rootGetters.mergedConfig
+      if (thirdColumnMode === 'none') {
+        commit('setLayoutType', normalOrMobile)
+      } else {
+        const wideLayout = width >= 1300
+        commit('setLayoutType', wideLayout ? 'wide' : normalOrMobile)
+      }
+    },
     setLastTimeline ({ commit }, value) {
       commit('setLastTimeline', value)
     }