Create Pagination util & make DiscussionListState and DiscussionList use it

I'm 100% sure that this code can be improved by a ton. Just pushing this so we can potentially work off of it.
Some stuff taken from PR #1829.
Does *not* have changing URL query parameter - this code is already a disaster.

.editorconfig

@@ -15,5 +15,5 @@ indent_size = 2
 [*.{diff,md}]
 trim_trailing_whitespace = false
 
-[*.{php,xml,json}]
+[*.{php,xml}]
 indent_size = 4

.github/workflows/build.yml

@@ -7,24 +7,10 @@ on:
 
 jobs:
   build:
-    name: JS / Build
     runs-on: ubuntu-latest
 
     steps:
-      - name: Check out code
-        uses: actions/checkout@v2
-
-      - name: Restore npm cache
-        uses: actions/cache@v2
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ hashFiles('js/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
-
-      # Our action will install npm, cd into `./js`, run `npm run build`,
-      # then commit and upload any changes
-      - name: Build production JS
-        uses: flarum/action-build@master
+      - uses: actions/checkout@master
+      - uses: flarum/action-build@master
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/codeql-analysis.yml

@@ -1,76 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-# supported CodeQL languages.
-#
-name: "CodeQL"
-
-# Run on:
-# - pushes to master, or
-# - PRs with a base of `master`
-# - which do not **only** consist of changes to .md or .less files
-on:
-  push:
-    branches: [ master ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.less'
-  pull_request:
-    branches: [ master ]
-    paths-ignore:
-      - '**/*.md'
-      - '**/*.less'
-  schedule:
-    - cron: '0 0 * * 1,3,5'
-
-jobs:
-  analyze:
-    name: Analyze / ${{ matrix.language }}
-    runs-on: ubuntu-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [ 'javascript' ]
-        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
-        # Learn more:
-        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
-
-      # Initializes the CodeQL tools for scanning.
-      - name: Initialize CodeQL
-        uses: github/codeql-action/init@v1
-        with:
-          languages: ${{ matrix.language }}
-          # If you wish to specify custom queries, you can do so here or in a config file.
-          # By default, queries listed here will override any specified in a config file.
-          # Prefix the list here with "+" to use these queries and those in the config file.
-          # queries: ./path/to/local/query, your-org/your-repo/queries@main
-
-      # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-      # If this step fails, then you should remove it and run the build manually (see below)
-      - name: Autobuild
-        uses: github/codeql-action/autobuild@v1
-
-      # ℹ️ Command-line programs to run using the OS shell.
-      # 📚 https://git.io/JvXDl
-
-      # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-      #    and modify them (or add more) to build your code if your project
-      #    uses a compiled language
-
-      #- run: |
-      #   make bootstrap
-      #   make release
-
-      - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v1

.github/workflows/lint.yml

@@ -1,7 +1,6 @@
 name: Lint
 
 on:
-  workflow_dispatch:
   push:
     paths:
       - 'js/src/**'
@@ -11,18 +10,22 @@ on:
 
 jobs:
   prettier:
-    name: JS / Prettier
     runs-on: ubuntu-latest
 
+    name: JS / Prettier
+
     steps:
-      - name: Check out code
-        uses: actions/checkout@v2
+      - uses: actions/checkout@master
 
-      - name: Set up Node
-        uses: actions/setup-node@v2
+      - name: Setup Node.js
+        uses: actions/setup-node@v1
         with:
-          node-version: "14"
+          node-version: "12"
 
-      - name: Check JS formatting
-        run: npx prettier --check src
+      - name: Install JS dependencies
+        run: npm ci
+        working-directory: ./js
+
+      - name: Check JS code for formatting
+        run: node_modules/.bin/prettier --check src
         working-directory: ./js

.github/workflows/pr_size_change.yml

@@ -1,45 +0,0 @@
-name: Bundle size checker
-
-on:
-  workflow_dispatch:
-
-  push:
-    paths:
-      - "js/**"
-  pull_request:
-    paths:
-      - "js/**"
-
-jobs:
-  bundlewatch:
-    runs-on: ubuntu-latest
-
-    name: Bundlewatch
-
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v2
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v2
-        with:
-          node-version: "14"
-
-      - name: Use npm v7
-        run: sudo npm install -g npm@7.x.x
-
-      - name: Install JS dependencies
-        # We need to use `npm install` here. If we don't, the workflow will fail.
-        run: npm install
-        working-directory: ./js
-
-      - name: Build production assets
-        run: npm run build
-        working-directory: ./js
-
-      - name: Check bundle size change
-        run: node_modules/.bin/bundlewatch --config .bundlewatch.config.json
-        working-directory: ./js
-        env:
-          BUNDLEWATCH_GITHUB_TOKEN: ${{ secrets.BUNDLEWATCH_GITHUB_TOKEN }}
-          CI_COMMIT_SHA: ${{ github.event.pull_request.head.sha }}

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [7.3, 7.4, '8.0']
+        php: [7.2, 7.3, 7.4]
         service: ['mysql:5.7', mariadb]
         prefix: ['', flarum_]
 
@@ -21,16 +21,16 @@ jobs:
             prefixStr: (prefix)
 
         exclude:
-          - php: 7.3
+          - php: 7.2
             service: 'mysql:5.7'
             prefix: flarum_
-          - php: 7.3
+          - php: 7.2
             service: mariadb
             prefix: flarum_
-          - php: 8.0
+          - php: 7.3
             service: 'mysql:5.7'
             prefix: flarum_
-          - php: 8.0
+          - php: 7.3
             service: mariadb
             prefix: flarum_
 
@@ -43,25 +43,15 @@ jobs:
     name: 'PHP ${{ matrix.php }} / ${{ matrix.db }} ${{ matrix.prefixStr }}'
 
     steps:
-      - name: Check out code
-        uses: actions/checkout@v2
+      - uses: actions/checkout@master
 
-      - name: Setup PHP
-        uses: shivammathur/setup-php@0b9d33cd0782337377999751fc10ea079fdd7104 # pin@v2
-        with:
-          php-version: ${{ matrix.php }}
-          coverage: xdebug
-          extensions: curl, dom, gd, json, mbstring, openssl, pdo_mysql, tokenizer, zip
-          tools: phpunit, composer:v2
+      - name: Select PHP version
+        run: sudo update-alternatives --set php $(which php${{ matrix.php }})
 
-      # The authentication alter is necessary because newer mysql versions use the `caching_sha2_password` driver,
-      # which isn't supported prior to PHP7.4
-      # When we drop support for PHP7.3, we should remove this from the setup.
       - name: Create MySQL Database
         run: |
           sudo systemctl start mysql
           mysql -uroot -proot -e 'CREATE DATABASE flarum_test;' --port 13306
-          mysql -uroot -proot -e "ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';" --port 13306
 
       - name: Install Composer dependencies
         run: composer install
@@ -75,5 +65,3 @@ jobs:
 
       - name: Run Composer tests
         run: composer test
-        env:
-          COMPOSER_PROCESS_TIMEOUT: 600

.gitignore

@@ -4,7 +4,6 @@ composer.phar
 node_modules
 .DS_Store
 Thumbs.db
-tests/.phpunit.result.cache
 /tests/integration/tmp
 .vagrant
 .idea/*

.styleci.yml

@@ -12,3 +12,7 @@ disabled:
   - phpdoc_order
   - phpdoc_separation
   - phpdoc_types
+
+finder:
+  exclude:
+    - "stubs"

CHANGELOG.md

@@ -1,96 +1,5 @@
 # Changelog
 
-## [0.1.0-beta.16](https://github.com/flarum/core/compare/v0.1.0-beta.15...v0.1.0-beta.16)
-
-### Added
-- Allow event subscribers (https://github.com/flarum/core/pull/2535)
-- Allow Settings extender to have a default value (https://github.com/flarum/core/pull/2495)
-- Allow hooking into the sending of notifications before being send (https://github.com/flarum/core/pull/2533)
-- PHP 8 support (https://github.com/flarum/core/pull/2507)
-- Search extender (https://github.com/flarum/core/pull/2483)
-- User badges to post preview (https://github.com/flarum/core/pull/2555)
-- Optional extension dependencies allow a booting order (https://github.com/flarum/core/pull/2579)
-- Auth extender (https://github.com/flarum/core/pull/2176)
-- `X-Powered-By` header added to allow indexers easier data aggregation of Flarum adoption (https://github.com/flarum/core/pull/2618)
-
-### Changed
-- Run integration tests in transaction (https://github.com/flarum/core/pull/2304)
-- Allow policies to return a boolean for simplified allow/deny (https://github.com/flarum/core/pull/2534)
-- Converted highlight helper to typescript (https://github.com/flarum/core/pull/2532)
-- Add accessibility attributes to Mark as Read button (https://github.com/flarum/core/pull/2564)
-- Dismiss errors on change email modal upon a new request ([00913d5](https://github.com/flarum/core/commit/00913d5b0be2172cfce1f16aaf64a24f3d2e6d4b))
-- Disabled extensions now are marked with a red circle instead of a red dot (https://github.com/flarum/core/pull/2562)
-- Extension dependency errors now show the extension title instead of the ID (https://github.com/flarum/core/pull/2563)
-- Change `mutate` method on ApiSerializer extender to `attributes` (https://github.com/flarum/core/pull/2578)
-- Moved locale files to the core from the language pack (https://github.com/flarum/core/pull/2408)
-- AdminPage extensibility and generic improvements (https://github.com/flarum/core/pull/2593)
-- Remove entry of authors, link to https://flarum.org/team (https://github.com/flarum/core/pull/2625)
-- Search and filtering are split (https://github.com/flarum/core/pull/2454)
-- Move IP identification into a middleware (https://github.com/flarum/core/pull/2624)
-- Editor Driver abstraction introduced (https://github.com/flarum/core/pull/2594)
-- Allow overriding routes (https://github.com/flarum/core/pull/2577)
-- Split user edit permissions into permissions for editing of user credentials, username, groups and suspending (https://github.com/flarum/core/pull/2620)
-- Reduced number of admin extension categories (https://github.com/flarum/core/pull/2604)
-- Move search related classes to a dedicated Query namespace (https://github.com/flarum/core/pull/2645)
-- Rewrite common helpers into typescript (https://github.com/flarum/core/pull/2541)
-- `TextEditor` is moved to the common namespace for use in the admin frontend (https://github.com/flarum/core/pull/2649)
-- Update Laravel/Illuminate components to 8 (https://github.com/flarum/core/pull/2576)
-- Eager load relations in discussion listing to improve performance (https://github.com/flarum/core/pull/2639)
-- Adopt flarum/testing package (https://github.com/flarum/core/pull/2545)
-- Replace `user` gambit with `author` gambit ([612a57c](https://github.com/flarum/core/commit/612a57c4664415a3ea120103483645c32acc6f12))
-- Posts page of on user profile loads posts using username instead of id ([30017ee](https://github.com/flarum/core/commit/30017eef09ae9e78640c4e2cacd4909fffa8d775))
-
-### Fixed
-- Transform css breaks iOS scroll functionality (https://github.com/flarum/core/pull/2527)
-- Composer header is hidden on mobile devices (https://github.com/flarum/core/pull/2279)
-- Cannot delete a post or discussion of a deleted user (https://github.com/flarum/core/pull/2521)
-- DiscussionListPane jumps around not keeping the scroll position (https://github.com/flarum/core/pull/2402)
-- Infinite scroll on notifications dropdown broken (https://github.com/flarum/core/pull/2524)
-- The show language selector switch remains toggled on ([9347b12](https://github.com/flarum/core/commit/9347b12b47bf4ab97ffb7ca92673604b237c1012))
-- Model Visibility extender throws exception on extensions that aren't installed or enabled (https://github.com/flarum/core/pull/2580)
-- Extensions are marked as enabled when enabling fails to unmet extension dependencies (https://github.com/flarum/core/pull/2558)
-- Routes to admin extension pages without a valid ID break the admin page (https://github.com/flarum/core/pull/2584)
-- Disabled fieldset use an incorrect CSS property `disallowed` (https://github.com/flarum/core/pull/2585)
-- Scrolling to a post that is already loaded the Load More button shows and does not trigger (https://github.com/flarum/core/pull/2388)
-- Opening discussions on some mobile devices require a double tap (https://github.com/flarum/core/pull/2607)
-- iOS devices show erratic behavior in the post stream while updating (https://github.com/flarum/core/pull/2548)
-- Small mobile screens partially hides the composer when the keyboard is open (https://github.com/flarum/core/pull/2631)
-- Clearing cache does not clear the template cache in storage/views (https://github.com/flarum/core/pull/2648)
-- Boot errors show critical information (https://github.com/flarum/core/pull/2633)
-- List user endpoint discloses last online even if user choose against it (https://github.com/flarum/core/pull/2634)
-- Group gambit disclosed hidden groups (https://github.com/flarum/core/pull/2657)
-- Search results on small windows not fully visible (https://github.com/flarum/core/pull/2650)
-- Composer goes off screen on Safari when starting to type (https://github.com/flarum/core/pull/2660)
-- A search that has no results shows the search results dropdown ([b88a7cb](https://github.com/flarum/core/commit/b88a7cb33b56e318f11670e9e2d563aef94db039))
-- The composer modal moves around when typing on Safari ([a64c398](https://github.com/flarum/core/commit/a64c39835aba43e831209609f4a9638ae589aa41))
-
-### Removed
-- Deprecated CSRF wildcard path match
-- Deprecated policy and visibility scoping events
-- Deprecated post types event
-- Deprecated validation events
-- Deprecated notification events
-- Deprecated floodgate
-- Deprecated user preferences event
-- Deprecated formatting events
-- Deprecated api events
-- Deprecated bootstrap.php support
-- PHP 7.2 support (https://github.com/flarum/core/pull/2507)
-- Bidi attribute in the rendered HTML (https://github.com/flarum/core/pull/2602)
-- `AccessToken::find`, use `AccessToken::findValid` instead (https://github.com/flarum/core/pull/2651)
-
-### Deprecated
-- `GetModelIsPrivate` event (https://github.com/flarum/core/pull/2587)
-- `CheckingPassword` event (https://github.com/flarum/core/pull/2176)
-- `event()` helper (https://github.com/flarum/core/pull/2608)
-- `AccessToken::generate` argument `$lifetime` (https://github.com/flarum/core/pull/2651)
-- `Rememberer::remember` argument `$token` should receive an instance of `RememberAccessToken` with `AccessToken` being deprecated (https://github.com/flarum/core/pull/2651)
-- `Rememberer::rememberUser` (https://github.com/flarum/core/pull/2651)
-- `SessionAuthenticator::logIn` argument `$userId`, should be replaced with `AccessToken` (https://github.com/flarum/core/pull/2651)
-- `TextEditor` has been moved to `common` (https://github.com/flarum/core/pull/2649) 
-- `UserFilter` ([91e8b56](https://github.com/flarum/core/commit/91e8b569618957c86757ef89bac666e9102db5ae))
-
-
 ## [0.1.0-beta.15](https://github.com/flarum/core/compare/v0.1.0-beta.14.1...v0.1.0-beta.15)
 
 ### Added
@@ -301,7 +210,7 @@
 - SES mail support (#2011)
 - Backward compatibility layer for `Flarum\Mail\DriverInterface`, new methods from beta.12 are now required
 - `Flarum\Util\Str` helper class
-- `Flarum\Event\ConfigureMiddleware` event
+- `Flarum\Event\ConfigureMiddleware` event 
 
 ### Deprecated
 - `Flarum\Event\AbstractConfigureRoutes` event class

composer.json

@@ -1,17 +1,36 @@
 {
     "name": "flarum/core",
     "description": "Delightfully simple forum software.",
-    "keywords": [
-        "forum",
-        "discussion"
-    ],
+    "keywords": ["forum", "discussion"],
     "homepage": "https://flarum.org/",
     "license": "MIT",
     "authors": [
         {
-            "name": "Flarum",
-            "email": "info@flarum.org",
-            "homepage": "https://flarum.org/team"
+            "name": "Franz Liedke",
+            "email": "franz@develophp.org"
+        },
+        {
+            "name": "Daniël Klabbers",
+            "email": "daniel@klabbers.email",
+            "homepage": "https://luceos.com"
+        },
+        {
+            "name": "David Sevilla Martin",
+            "email": "me+flarum@datitisev.me",
+            "homepage": "https://datitisev.me"
+        },
+        {
+            "name": "Clark Winkelmann",
+            "email": "clark.winkelmann@gmail.com",
+            "homepage": "https://clarkwinkelmann.com"
+        },
+        {
+            "name": "Matthew Kilgore",
+            "email": "matthew@kilgore.dev"
+        },
+        {
+          "name": "Alexander (Sasha) Skvortsov",
+          "email": "askvortsov@flarum.org"
         }
     ],
     "support": {
@@ -20,38 +39,36 @@
         "docs": "https://flarum.org/docs/"
     },
     "require": {
-        "php": ">=7.3",
+        "php": ">=7.2",
         "axy/sourcemap": "^0.1.4",
         "components/font-awesome": "^5.14.0",
-        "dflydev/fig-cookies": "^3.0.0",
+        "dflydev/fig-cookies": "^2.0.1",
         "doctrine/dbal": "^2.7",
-        "dragonmantank/cron-expression": "^3.1.0",
-        "franzl/whoops-middleware": "^2.0.0",
-        "illuminate/bus": "^8.0",
-        "illuminate/cache": "^8.0",
-        "illuminate/config": "^8.0",
-        "illuminate/console": "^8.0",
-        "illuminate/container": "^8.0",
-        "illuminate/contracts": "^8.0",
-        "illuminate/database": "^8.0",
-        "illuminate/events": "^8.0",
-        "illuminate/filesystem": "^8.0",
-        "illuminate/hashing": "^8.0",
-        "illuminate/mail": "^8.0",
-        "illuminate/queue": "^8.0",
-        "illuminate/session": "^8.0",
-        "illuminate/support": "^8.0",
-        "illuminate/validation": "^8.0",
-        "illuminate/view": "^8.0",
+        "franzl/whoops-middleware": "^0.4.0",
+        "illuminate/bus": "^6.0",
+        "illuminate/cache": "^6.0",
+        "illuminate/config": "^6.0",
+        "illuminate/container": "^6.0",
+        "illuminate/contracts": "^6.0",
+        "illuminate/database": "^6.0",
+        "illuminate/events": "^6.0",
+        "illuminate/filesystem": "^6.0",
+        "illuminate/hashing": "^6.0",
+        "illuminate/mail": "^6.0",
+        "illuminate/queue": "^6.0",
+        "illuminate/session": "^6.0",
+        "illuminate/support": "^6.0",
+        "illuminate/validation": "^6.0",
+        "illuminate/view": "^6.0",
         "intervention/image": "^2.5.0",
-        "laminas/laminas-diactoros": "^2.4.1",
-        "laminas/laminas-httphandlerrunner": "^1.2.0",
-        "laminas/laminas-stratigility": "^3.2.2",
+        "laminas/laminas-diactoros": "^1.8.4",
+        "laminas/laminas-httphandlerrunner": "^1.0",
+        "laminas/laminas-stratigility": "^3.0",
         "league/flysystem": "^1.0.11",
         "matthiasmullie/minify": "^1.3",
-        "middlewares/base-path": "^2.0.1",
-        "middlewares/base-path-router": "^2.0.1",
-        "middlewares/request-handler": "^2.0.1",
+        "middlewares/base-path": "^1.1",
+        "middlewares/base-path-router": "^0.2.1",
+        "middlewares/request-handler": "^1.2",
         "monolog/monolog": "^1.16.0",
         "nesbot/carbon": "^2.0",
         "nikic/fast-route": "^0.6",
@@ -59,17 +76,18 @@
         "psr/http-server-handler": "^1.0",
         "psr/http-server-middleware": "^1.0",
         "s9e/text-formatter": "^2.3.6",
-        "symfony/config": "^5.2.2",
-        "symfony/console": "^5.2.2",
-        "symfony/event-dispatcher": "^5.2.2",
+        "symfony/config": "^4.3.4",
+        "symfony/console": "^4.3.4",
+        "symfony/event-dispatcher": "^4.3.4",
         "symfony/mime": "^5.2.0",
-        "symfony/translation": "^5.1.5",
-        "symfony/yaml": "^5.2.2",
+        "symfony/translation": "^4.3.4",
+        "symfony/yaml": "^4.3.4",
         "tobscure/json-api": "^0.3.0",
         "wikimedia/less.php": "^3.0"
     },
     "require-dev": {
-        "flarum/testing": "^0.1.0-beta.16"
+        "mockery/mockery": "^1.0",
+        "phpunit/phpunit": "^7.0"
     },
     "autoload": {
         "psr-4": {

js/.bundlewatch.config.json

@@ -1,8 +0,0 @@
-{
-    "files": [
-        {
-            "path": "./dist/*.js"
-        }
-    ],
-    "defaultCompression": "gzip"
-}

js/package.json

@@ -2,40 +2,32 @@
   "private": true,
   "name": "@flarum/core",
   "dependencies": {
+    "@babel/preset-typescript": "^7.10.1",
+    "@types/mithril": "^2.0.3",
     "bootstrap": "^3.4.1",
-    "clsx": "^1.1.1",
+    "classnames": "^2.2.5",
     "color-thief-browser": "^2.0.2",
-    "dayjs": "^1.10.4",
-    "expose-loader": "^2.0.0",
-    "jquery": "^3.6.0",
+    "dayjs": "^1.8.28",
+    "expose-loader": "^0.7.5",
+    "flarum-webpack-config": "0.1.0-beta.10",
+    "jquery": "^3.5.1",
     "jquery.hotkeys": "^0.1.0",
-    "lodash-es": "^4.17.21",
+    "lodash-es": "^4.17.14",
+    "m.attrs.bidi": "github:tobscure/m.attrs.bidi",
     "mithril": "^2.0.4",
     "punycode": "^2.1.1",
     "spin.js": "^3.1.0",
-    "textarea-caret": "^3.1.0"
+    "webpack": "^4.43.0",
+    "webpack-cli": "^3.3.11",
+    "webpack-merge": "^4.1.4"
   },
   "devDependencies": {
-    "@babel/preset-typescript": "^7.13.0",
-    "@types/jquery": "^3.5.5",
-    "@types/lodash-es": "^4.17.4",
-    "@types/mithril": "^2.0.7",
-    "@types/punycode": "^2.1.0",
-    "@types/textarea-caret": "^3.0.0",
-    "bundlewatch": "^0.3.2",
-    "cross-env": "^7.0.3",
-    "flarum-webpack-config": "0.1.0-beta.10",
-    "husky": "^4.3.8",
-    "prettier": "^2.2.1",
-    "webpack": "^5.0.0",
-    "webpack-bundle-analyzer": "^4.4.1",
-    "webpack-cli": "^4.0.0",
-    "webpack-merge": "^4.0.0"
+    "husky": "^4.2.5",
+    "prettier": "2.0.2"
   },
   "scripts": {
     "dev": "webpack --mode development --watch",
     "build": "webpack --mode production",
-    "analyze": "cross-env ANALYZER=true npm run build",
     "format": "prettier --write src",
     "format-check": "prettier --check src"
   },

js/shims.d.ts

@@ -19,21 +19,9 @@ import Application from './src/common/Application';
  * to (and should not) bundle these themselves.
  */
 declare global {
-  // $ is already defined by `@types/jquery`
+  const $: typeof _$;
   const m: Mithril.Static;
   const dayjs: typeof _dayjs;
-
-  // Extend JQuery with our custom functions, defined with $.fn
-  interface JQuery {
-    /**
-     * Creates a tooltip on a jQuery element reference.
-     *
-     * Optionally accepts placement and delay options.
-     *
-     * Returns the same reference to allow for method chaining.
-     */
-    tooltip: (tooltipOptions?: { placement?: 'top' | 'bottom' | 'left' | 'right'; delay?: number }) => JQuery;
-  }
 }
 
 /**

js/src/admin/AdminApplication.js

@@ -1,18 +1,27 @@
 import HeaderPrimary from './components/HeaderPrimary';
 import HeaderSecondary from './components/HeaderSecondary';
 import routes from './routes';
+import ExtensionPage from './components/ExtensionPage';
 import Application from '../common/Application';
 import Navigation from '../common/components/Navigation';
 import AdminNav from './components/AdminNav';
 import ExtensionData from './utils/ExtensionData';
 
 export default class AdminApplication extends Application {
+  // Deprecated as of beta 15
+  extensionSettings = {};
+
   extensionData = new ExtensionData();
 
   extensionCategories = {
-    feature: 30,
-    theme: 20,
+    discussion: 70,
+    moderation: 60,
+    feature: 50,
+    formatting: 40,
+    theme: 30,
+    authentication: 20,
     language: 10,
+    other: 0,
   };
 
   history = {
@@ -52,6 +61,14 @@ export default class AdminApplication extends Application {
     m.mount(document.getElementById('header-primary'), HeaderPrimary);
     m.mount(document.getElementById('header-secondary'), HeaderSecondary);
     m.mount(document.getElementById('admin-navigation'), AdminNav);
+
+    // If an extension has just been enabled, then we will run its settings
+    // callback.
+    const enabled = localStorage.getItem('enabledExtension');
+    if (enabled && this.extensionSettings[enabled] && typeof this.extensionSettings[enabled] === 'function') {
+      this.extensionSettings[enabled]();
+      localStorage.removeItem('enabledExtension');
+    }
   }
 
   getRequiredPermissions(permission) {

js/src/admin/app.ts

@@ -1,8 +0,0 @@
-import Admin from './AdminApplication';
-
-const app = new Admin();
-
-// @ts-ignore
-window.app = app;
-
-export default app;

js/src/admin/compat.js

@@ -8,7 +8,6 @@ import SettingDropdown from './components/SettingDropdown';
 import EditCustomFooterModal from './components/EditCustomFooterModal';
 import SessionDropdown from './components/SessionDropdown';
 import HeaderPrimary from './components/HeaderPrimary';
-import AdminPage from './components/AdminPage';
 import AppearancePage from './components/AppearancePage';
 import StatusWidget from './components/StatusWidget';
 import ExtensionsWidget from './components/ExtensionsWidget';
@@ -17,6 +16,7 @@ import SettingsModal from './components/SettingsModal';
 import DashboardWidget from './components/DashboardWidget';
 import ExtensionPage from './components/ExtensionPage';
 import ExtensionLinkButton from './components/ExtensionLinkButton';
+import AdminLinkButton from './components/AdminLinkButton';
 import PermissionGrid from './components/PermissionGrid';
 import ExtensionPermissionGrid from './components/ExtensionPermissionGrid';
 import MailPage from './components/MailPage';
@@ -43,7 +43,6 @@ export default Object.assign(compat, {
   'components/EditCustomFooterModal': EditCustomFooterModal,
   'components/SessionDropdown': SessionDropdown,
   'components/HeaderPrimary': HeaderPrimary,
-  'components/AdminPage': AdminPage,
   'components/AppearancePage': AppearancePage,
   'components/StatusWidget': StatusWidget,
   'components/ExtensionsWidget': ExtensionsWidget,
@@ -52,6 +51,7 @@ export default Object.assign(compat, {
   'components/DashboardWidget': DashboardWidget,
   'components/ExtensionPage': ExtensionPage,
   'components/ExtensionLinkButton': ExtensionLinkButton,
+  'components/AdminLinkButton': AdminLinkButton,
   'components/PermissionGrid': PermissionGrid,
   'components/ExtensionPermissionGrid': ExtensionPermissionGrid,
   'components/MailPage': MailPage,

js/src/admin/components/AddExtensionModal.js

@@ -0,0 +1,32 @@
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+import Modal from '../../common/components/Modal';
+
+export default class AddExtensionModal extends Modal {
+  className() {
+    return 'AddExtensionModal Modal--small';
+  }
+
+  title() {
+    return app.translator.trans('core.admin.add_extension.title');
+  }
+
+  content() {
+    return (
+      <div className="Modal-body">
+        <p>{app.translator.trans('core.admin.add_extension.temporary_text')}</p>
+        <p>
+          {app.translator.trans('core.admin.add_extension.install_text', { a: <a href="https://discuss.flarum.org/t/extensions" target="_blank" /> })}
+        </p>
+        <p>{app.translator.trans('core.admin.add_extension.developer_text', { a: <a href="http://flarum.org/docs/extend" target="_blank" /> })}</p>
+      </div>
+    );
+  }
+}

js/src/admin/components/AdminLinkButton.js

@@ -0,0 +1,16 @@
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+import LinkButton from '../../common/components/LinkButton';
+
+export default class AdminLinkButton extends LinkButton {
+  getButtonContent(children) {
+    return [...super.getButtonContent(children), <div className="AdminLinkButton-description">{this.attrs.description}</div>];
+  }
+}

js/src/admin/components/AdminNav.js

@@ -126,17 +126,16 @@ export default class AdminNav extends Component {
 
       categorizedExtensions[category].map((extension) => {
         const query = this.query().toUpperCase();
-        const title = extension.extra['flarum-extension'].title || '';
-        const description = extension.description || '';
+        const title = extension.extra['flarum-extension'].title;
 
-        if (!query || title.toUpperCase().includes(query) || description.toUpperCase().includes(query)) {
+        if (!query || title.toUpperCase().includes(query) || extension.description.toUpperCase().includes(query)) {
           items.add(
             `extension-${extension.id}`,
             <ExtensionLinkButton
               href={app.route('extension', { id: extension.id })}
               extensionId={extension.id}
               className="ExtensionNavButton"
-              title={description}
+              title={extension.description}
             >
               {title}
             </ExtensionLinkButton>,

js/src/admin/components/AdminPage.js

@@ -1,180 +0,0 @@
-import Page from '../../common/components/Page';
-import Button from '../../common/components/Button';
-import Switch from '../../common/components/Switch';
-import Select from '../../common/components/Select';
-import classList from '../../common/utils/classList';
-import Stream from '../../common/utils/Stream';
-import saveSettings from '../utils/saveSettings';
-import AdminHeader from './AdminHeader';
-
-export default class AdminPage extends Page {
-  oninit(vnode) {
-    super.oninit(vnode);
-
-    this.settings = {};
-
-    this.loading = false;
-  }
-
-  view() {
-    const className = classList(['AdminPage', this.headerInfo().className]);
-
-    return (
-      <div className={className}>
-        {this.header()}
-        <div className="container">{this.content()}</div>
-      </div>
-    );
-  }
-
-  content() {
-    return '';
-  }
-
-  submitButton() {
-    return (
-      <Button onclick={this.saveSettings.bind(this)} className="Button Button--primary" loading={this.loading} disabled={!this.isChanged()}>
-        {app.translator.trans('core.admin.settings.submit_button')}
-      </Button>
-    );
-  }
-
-  header() {
-    const headerInfo = this.headerInfo();
-
-    return (
-      <AdminHeader icon={headerInfo.icon} description={headerInfo.description} className={headerInfo.className + '-header'}>
-        {headerInfo.title}
-      </AdminHeader>
-    );
-  }
-
-  headerInfo() {
-    return {
-      className: '',
-      icon: '',
-      title: '',
-      description: '',
-    };
-  }
-
-  /**
-   * buildSettingComponent takes a settings object and turns it into a component.
-   * Depending on the type of input, you can set the type to 'bool', 'select', or
-   * any standard <input> type. Any values inside the 'extra' object will be added
-   * to the component as an attribute.
-   *
-   * Alternatively, you can pass a callback that will be executed in ExtensionPage's
-   * context to include custom JSX elements.
-   *
-   * @example
-   *
-   * {
-   *    setting: 'acme.checkbox',
-   *    label: app.translator.trans('acme.admin.setting_label'),
-   *    type: 'bool',
-   *    help: app.translator.trans('acme.admin.setting_help'),
-   *    className: 'Setting-item'
-   * }
-   *
-   * @example
-   *
-   * {
-   *    setting: 'acme.select',
-   *    label: app.translator.trans('acme.admin.setting_label'),
-   *    type: 'select',
-   *    options: {
-   *      'option1': 'Option 1 label',
-   *      'option2': 'Option 2 label',
-   *    },
-   *    default: 'option1',
-   * }
-   *
-   * @param setting
-   * @returns {JSX.Element}
-   */
-  buildSettingComponent(entry) {
-    if (typeof entry === 'function') {
-      return entry.call(this);
-    }
-
-    const { setting, help, ...componentAttrs } = entry;
-
-    delete componentAttrs.help;
-
-    const value = this.setting([setting])();
-    if (['bool', 'checkbox', 'switch', 'boolean'].includes(componentAttrs.type)) {
-      return (
-        <div className="Form-group">
-          <Switch state={!!value && value !== '0'} onchange={this.settings[setting]} {...componentAttrs}>
-            {componentAttrs.label}
-          </Switch>
-          <div className="helpText">{help}</div>
-        </div>
-      );
-    } else if (['select', 'dropdown', 'selectdropdown'].includes(componentAttrs.type)) {
-      return (
-        <div className="Form-group">
-          <label>{componentAttrs.label}</label>
-          <div className="helpText">{help}</div>
-          <Select
-            value={value || componentAttrs.default}
-            options={componentAttrs.options}
-            buttonClassName="Button"
-            onchange={this.settings[setting]}
-            {...componentAttrs}
-          />
-        </div>
-      );
-    } else {
-      componentAttrs.className = classList(['FormControl', componentAttrs.className]);
-      return (
-        <div className="Form-group">
-          {componentAttrs.label ? <label>{componentAttrs.label}</label> : ''}
-          <div className="helpText">{help}</div>
-          <input type={componentAttrs.type} bidi={this.setting(setting)} {...componentAttrs} />
-        </div>
-      );
-    }
-  }
-
-  onsaved() {
-    this.loading = false;
-
-    app.alerts.show({ type: 'success' }, app.translator.trans('core.admin.settings.saved_message'));
-  }
-
-  setting(key, fallback = '') {
-    this.settings[key] = this.settings[key] || Stream(app.data.settings[key] || fallback);
-
-    return this.settings[key];
-  }
-
-  dirty() {
-    const dirty = {};
-
-    Object.keys(this.settings).forEach((key) => {
-      const value = this.settings[key]();
-
-      if (value !== app.data.settings[key]) {
-        dirty[key] = value;
-      }
-    });
-
-    return dirty;
-  }
-
-  isChanged() {
-    return Object.keys(this.dirty()).length;
-  }
-
-  saveSettings(e) {
-    e.preventDefault();
-
-    app.alerts.clear();
-
-    this.loading = true;
-
-    return saveSettings(this.dirty()).then(this.onsaved.bind(this));
-  }
-}

js/src/admin/components/AppearancePage.js

@@ -1,120 +1,141 @@
+import Page from '../../common/components/Page';
 import Button from '../../common/components/Button';
+import Switch from '../../common/components/Switch';
+import Stream from '../../common/utils/Stream';
 import EditCustomCssModal from './EditCustomCssModal';
 import EditCustomHeaderModal from './EditCustomHeaderModal';
 import EditCustomFooterModal from './EditCustomFooterModal';
 import UploadImageButton from './UploadImageButton';
-import AdminPage from './AdminPage';
+import saveSettings from '../utils/saveSettings';
+import AdminHeader from './AdminHeader';
 
-export default class AppearancePage extends AdminPage {
-  headerInfo() {
-    return {
-      className: 'AppearancePage',
-      icon: 'fas fa-paint-brush',
-      title: app.translator.trans('core.admin.appearance.title'),
-      description: app.translator.trans('core.admin.appearance.description'),
-    };
+export default class AppearancePage extends Page {
+  oninit(vnode) {
+    super.oninit(vnode);
+
+    this.primaryColor = Stream(app.data.settings.theme_primary_color);
+    this.secondaryColor = Stream(app.data.settings.theme_secondary_color);
+    this.darkMode = Stream(app.data.settings.theme_dark_mode);
+    this.coloredHeader = Stream(app.data.settings.theme_colored_header);
   }
 
-  content() {
-    return [
-      <div className="Form">
-        <fieldset className="AppearancePage-colors">
-          <legend>{app.translator.trans('core.admin.appearance.colors_heading')}</legend>
-          <div className="helpText">{app.translator.trans('core.admin.appearance.colors_text')}</div>
+  view() {
+    return (
+      <div className="AppearancePage">
+        <AdminHeader
+          icon="fas fa-paint-brush"
+          description={app.translator.trans('core.admin.appearance.description')}
+          className="AppearancePage-header"
+        >
+          {app.translator.trans('core.admin.appearance.title')}
+        </AdminHeader>
+        <div className="container">
+          <form onsubmit={this.onsubmit.bind(this)}>
+            <fieldset className="AppearancePage-colors">
+              <legend>{app.translator.trans('core.admin.appearance.colors_heading')}</legend>
+              <div className="helpText">{app.translator.trans('core.admin.appearance.colors_text')}</div>
 
-          <div className="AppearancePage-colors-input">
-            {this.buildSettingComponent({
-              type: 'text',
-              setting: 'theme_primary_color',
-              placeholder: '#aaaaaa',
-            })}
-            {this.buildSettingComponent({
-              type: 'text',
-              setting: 'theme_secondary_color',
-              placeholder: '#aaaaaa',
-            })}
-          </div>
+              <div className="AppearancePage-colors-input">
+                <input className="FormControl" type="text" placeholder="#aaaaaa" bidi={this.primaryColor} />
+                <input className="FormControl" type="text" placeholder="#aaaaaa" bidi={this.secondaryColor} />
+              </div>
 
-          {this.buildSettingComponent({
-            type: 'switch',
-            setting: 'theme_dark_mode',
-            label: app.translator.trans('core.admin.appearance.dark_mode_label'),
-          })}
+              {Switch.component(
+                {
+                  state: this.darkMode(),
+                  onchange: this.darkMode,
+                },
+                app.translator.trans('core.admin.appearance.dark_mode_label')
+              )}
 
-          {this.buildSettingComponent({
-            type: 'switch',
-            setting: 'theme_colored_header',
-            label: app.translator.trans('core.admin.appearance.colored_header_label'),
-          })}
+              {Switch.component(
+                {
+                  state: this.coloredHeader(),
+                  onchange: this.coloredHeader,
+                },
+                app.translator.trans('core.admin.appearance.colored_header_label')
+              )}
 
-          {this.submitButton()}
-        </fieldset>
-      </div>,
+              {Button.component(
+                {
+                  className: 'Button Button--primary',
+                  type: 'submit',
+                  loading: this.loading,
+                },
+                app.translator.trans('core.admin.appearance.submit_button')
+              )}
+            </fieldset>
+          </form>
 
-      <fieldset>
-        <legend>{app.translator.trans('core.admin.appearance.logo_heading')}</legend>
-        <div className="helpText">{app.translator.trans('core.admin.appearance.logo_text')}</div>
-        <UploadImageButton name="logo" />
-      </fieldset>,
+          <fieldset>
+            <legend>{app.translator.trans('core.admin.appearance.logo_heading')}</legend>
+            <div className="helpText">{app.translator.trans('core.admin.appearance.logo_text')}</div>
+            <UploadImageButton name="logo" />
+          </fieldset>
 
-      <fieldset>
-        <legend>{app.translator.trans('core.admin.appearance.favicon_heading')}</legend>
-        <div className="helpText">{app.translator.trans('core.admin.appearance.favicon_text')}</div>
-        <UploadImageButton name="favicon" />
-      </fieldset>,
+          <fieldset>
+            <legend>{app.translator.trans('core.admin.appearance.favicon_heading')}</legend>
+            <div className="helpText">{app.translator.trans('core.admin.appearance.favicon_text')}</div>
+            <UploadImageButton name="favicon" />
+          </fieldset>
 
-      <fieldset>
-        <legend>{app.translator.trans('core.admin.appearance.custom_header_heading')}</legend>
-        <div className="helpText">{app.translator.trans('core.admin.appearance.custom_header_text')}</div>
-        {Button.component(
-          {
-            className: 'Button',
-            onclick: () => app.modal.show(EditCustomHeaderModal),
-          },
-          app.translator.trans('core.admin.appearance.edit_header_button')
-        )}
-      </fieldset>,
+          <fieldset>
+            <legend>{app.translator.trans('core.admin.appearance.custom_header_heading')}</legend>
+            <div className="helpText">{app.translator.trans('core.admin.appearance.custom_header_text')}</div>
+            {Button.component(
+              {
+                className: 'Button',
+                onclick: () => app.modal.show(EditCustomHeaderModal),
+              },
+              app.translator.trans('core.admin.appearance.edit_header_button')
+            )}
+          </fieldset>
 
-      <fieldset>
-        <legend>{app.translator.trans('core.admin.appearance.custom_footer_heading')}</legend>
-        <div className="helpText">{app.translator.trans('core.admin.appearance.custom_footer_text')}</div>
-        {Button.component(
-          {
-            className: 'Button',
-            onclick: () => app.modal.show(EditCustomFooterModal),
-          },
-          app.translator.trans('core.admin.appearance.edit_footer_button')
-        )}
-      </fieldset>,
+          <fieldset>
+            <legend>{app.translator.trans('core.admin.appearance.custom_footer_heading')}</legend>
+            <div className="helpText">{app.translator.trans('core.admin.appearance.custom_footer_text')}</div>
+            {Button.component(
+              {
+                className: 'Button',
+                onclick: () => app.modal.show(EditCustomFooterModal),
+              },
+              app.translator.trans('core.admin.appearance.edit_footer_button')
+            )}
+          </fieldset>
 
-      <fieldset>
-        <legend>{app.translator.trans('core.admin.appearance.custom_styles_heading')}</legend>
-        <div className="helpText">{app.translator.trans('core.admin.appearance.custom_styles_text')}</div>
-        {Button.component(
-          {
-            className: 'Button',
-            onclick: () => app.modal.show(EditCustomCssModal),
-          },
-          app.translator.trans('core.admin.appearance.edit_css_button')
-        )}
-      </fieldset>,
-    ];
+          <fieldset>
+            <legend>{app.translator.trans('core.admin.appearance.custom_styles_heading')}</legend>
+            <div className="helpText">{app.translator.trans('core.admin.appearance.custom_styles_text')}</div>
+            {Button.component(
+              {
+                className: 'Button',
+                onclick: () => app.modal.show(EditCustomCssModal),
+              },
+              app.translator.trans('core.admin.appearance.edit_css_button')
+            )}
+          </fieldset>
+        </div>
+      </div>
+    );
   }
 
-  onsaved() {
-    window.location.reload();
-  }
-
-  saveSettings(e) {
+  onsubmit(e) {
     e.preventDefault();
 
     const hex = /^#[0-9a-f]{3}([0-9a-f]{3})?$/i;
 
-    if (!hex.test(this.settings['theme_primary_color']()) || !hex.test(this.settings['theme_secondary_color']())) {
+    if (!hex.test(this.primaryColor()) || !hex.test(this.secondaryColor())) {
       alert(app.translator.trans('core.admin.appearance.enter_hex_message'));
       return;
     }
 
-    super.saveSettings(e);
+    this.loading = true;
+
+    saveSettings({
+      theme_primary_color: this.primaryColor(),
+      theme_secondary_color: this.secondaryColor(),
+      theme_dark_mode: this.darkMode(),
+      theme_colored_header: this.coloredHeader(),
+    }).then(() => window.location.reload());
   }
 }

js/src/admin/components/BasicsPage.js

@@ -1,11 +1,31 @@
+import Page from '../../common/components/Page';
 import FieldSet from '../../common/components/FieldSet';
+import Select from '../../common/components/Select';
+import Button from '../../common/components/Button';
+import saveSettings from '../utils/saveSettings';
 import ItemList from '../../common/utils/ItemList';
-import AdminPage from './AdminPage';
+import Switch from '../../common/components/Switch';
+import Stream from '../../common/utils/Stream';
+import withAttr from '../../common/utils/withAttr';
+import AdminHeader from './AdminHeader';
 
-export default class BasicsPage extends AdminPage {
+export default class BasicsPage extends Page {
   oninit(vnode) {
     super.oninit(vnode);
 
+    this.loading = false;
+
+    this.fields = [
+      'forum_title',
+      'forum_description',
+      'default_locale',
+      'show_language_selector',
+      'default_route',
+      'welcome_title',
+      'welcome_message',
+      'display_name_driver',
+    ];
+
     this.localeOptions = {};
     const locales = app.data.locales;
     for (const i in locales) {
@@ -20,99 +40,157 @@ export default class BasicsPage extends AdminPage {
 
     this.slugDriverOptions = {};
     Object.keys(app.data.slugDrivers).forEach((model) => {
+      this.fields.push(`slug_driver_${model}`);
       this.slugDriverOptions[model] = {};
 
       app.data.slugDrivers[model].forEach((option) => {
         this.slugDriverOptions[model][option] = option;
       });
     });
+
+    this.values = {};
+
+    const settings = app.data.settings;
+    this.fields.forEach((key) => (this.values[key] = Stream(settings[key])));
+
+    if (!this.values.display_name_driver() && displayNameDrivers.includes('username')) this.values.display_name_driver('username');
+
+    Object.keys(app.data.slugDrivers).forEach((model) => {
+      if (!this.values[`slug_driver_${model}`]() && 'default' in this.slugDriverOptions[model]) {
+        this.values[`slug_driver_${model}`]('default');
+      }
+    });
+
+    if (typeof this.values.show_language_selector() !== 'number') this.values.show_language_selector(1);
   }
 
-  headerInfo() {
-    return {
-      className: 'BasicsPage',
-      icon: 'fas fa-pencil-alt',
-      title: app.translator.trans('core.admin.basics.title'),
-      description: app.translator.trans('core.admin.basics.description'),
-    };
-  }
+  view() {
+    return (
+      <div className="BasicsPage">
+        <AdminHeader icon="fas fa-pencil-alt" description={app.translator.trans('core.admin.basics.description')} className="BasicsPage-header">
+          {app.translator.trans('core.admin.basics.title')}
+        </AdminHeader>
+        <div className="container">
+          <form onsubmit={this.onsubmit.bind(this)}>
+            {FieldSet.component(
+              {
+                label: app.translator.trans('core.admin.basics.forum_title_heading'),
+              },
+              [<input className="FormControl" bidi={this.values.forum_title} />]
+            )}
 
-  content() {
-    return [
-      <div className="Form">
-        {this.buildSettingComponent({
-          type: 'text',
-          setting: 'forum_title',
-          label: app.translator.trans('core.admin.basics.forum_title_heading'),
-        })}
-        {this.buildSettingComponent({
-          type: 'text',
-          setting: 'forum_description',
-          label: app.translator.trans('core.admin.basics.forum_description_heading'),
-          help: app.translator.trans('core.admin.basics.forum_description_text'),
-        })}
+            {FieldSet.component(
+              {
+                label: app.translator.trans('core.admin.basics.forum_description_heading'),
+              },
+              [
+                <div className="helpText">{app.translator.trans('core.admin.basics.forum_description_text')}</div>,
+                <textarea className="FormControl" bidi={this.values.forum_description} />,
+              ]
+            )}
 
-        {Object.keys(this.localeOptions).length > 1
-          ? [
-              this.buildSettingComponent({
-                type: 'select',
-                setting: 'default_locale',
-                options: this.localeOptions,
-                label: app.translator.trans('core.admin.basics.default_language_heading'),
-              }),
-              this.buildSettingComponent({
-                type: 'switch',
-                setting: 'show_language_selector',
-                label: app.translator.trans('core.admin.basics.show_language_selector_label'),
-              }),
-            ]
-          : ''}
+            {Object.keys(this.localeOptions).length > 1
+              ? FieldSet.component(
+                  {
+                    label: app.translator.trans('core.admin.basics.default_language_heading'),
+                  },
+                  [
+                    Select.component({
+                      options: this.localeOptions,
+                      value: this.values.default_locale(),
+                      onchange: this.values.default_locale,
+                    }),
+                    Switch.component(
+                      {
+                        state: this.values.show_language_selector(),
+                        onchange: this.values.show_language_selector,
+                      },
+                      app.translator.trans('core.admin.basics.show_language_selector_label')
+                    ),
+                  ]
+                )
+              : ''}
 
-        <FieldSet className="BasicsPage-homePage Form-group" label={app.translator.trans('core.admin.basics.home_page_heading')}>
-          <div className="helpText">{app.translator.trans('core.admin.basics.home_page_text')}</div>
-          {this.homePageItems()
-            .toArray()
-            .map(({ path, label }) => (
-              <label className="checkbox">
-                <input type="radio" name="homePage" value={path} bidi={this.setting('default_route')} />
-                {label}
-              </label>
-            ))}
-        </FieldSet>
+            {FieldSet.component(
+              {
+                label: app.translator.trans('core.admin.basics.home_page_heading'),
+                className: 'BasicsPage-homePage',
+              },
+              [
+                <div className="helpText">{app.translator.trans('core.admin.basics.home_page_text')}</div>,
+                this.homePageItems()
+                  .toArray()
+                  .map(({ path, label }) => (
+                    <label className="checkbox">
+                      <input
+                        type="radio"
+                        name="homePage"
+                        value={path}
+                        checked={this.values.default_route() === path}
+                        onclick={withAttr('value', this.values.default_route)}
+                      />
+                      {label}
+                    </label>
+                  )),
+              ]
+            )}
 
-        <div className="Form-group BasicsPage-welcomeBanner-input">
-          <label>{app.translator.trans('core.admin.basics.welcome_banner_heading')}</label>
-          <div className="helpText">{app.translator.trans('core.admin.basics.welcome_banner_text')}</div>
-          <input type="text" className="FormControl" bidi={this.setting('welcome_title')} />
-          <textarea className="FormControl" bidi={this.setting('welcome_message')} />
+            {FieldSet.component(
+              {
+                label: app.translator.trans('core.admin.basics.welcome_banner_heading'),
+                className: 'BasicsPage-welcomeBanner',
+              },
+              [
+                <div className="helpText">{app.translator.trans('core.admin.basics.welcome_banner_text')}</div>,
+                <div className="BasicsPage-welcomeBanner-input">
+                  <input className="FormControl" bidi={this.values.welcome_title} />
+                  <textarea className="FormControl" bidi={this.values.welcome_message} />
+                </div>,
+              ]
+            )}
+
+            {Object.keys(this.displayNameOptions).length > 1 ? (
+              <FieldSet label={app.translator.trans('core.admin.basics.display_name_heading')}>
+                <div className="helpText">{app.translator.trans('core.admin.basics.display_name_text')}</div>
+                <Select
+                  options={this.displayNameOptions}
+                  value={this.values.display_name_driver()}
+                  onchange={this.values.display_name_driver}
+                ></Select>
+              </FieldSet>
+            ) : (
+              ''
+            )}
+
+            {Object.keys(this.slugDriverOptions).map((model) => {
+              const options = this.slugDriverOptions[model];
+              if (Object.keys(options).length > 1) {
+                return (
+                  <FieldSet label={app.translator.trans('core.admin.basics.slug_driver_heading', { model })}>
+                    <div className="helpText">{app.translator.trans('core.admin.basics.slug_driver_text', { model })}</div>
+                    <Select options={options} value={this.values[`slug_driver_${model}`]()} onchange={this.values[`slug_driver_${model}`]}></Select>
+                  </FieldSet>
+                );
+              }
+            })}
+
+            {Button.component(
+              {
+                type: 'submit',
+                className: 'Button Button--primary',
+                loading: this.loading,
+                disabled: !this.changed(),
+              },
+              app.translator.trans('core.admin.basics.submit_button')
+            )}
+          </form>
         </div>
+      </div>
+    );
+  }
 
-        {Object.keys(this.displayNameOptions).length > 1
-          ? this.buildSettingComponent({
-              type: 'select',
-              setting: 'display_name_driver',
-              options: this.displayNameOptions,
-              label: app.translator.trans('core.admin.basics.display_name_heading'),
-              help: app.translator.trans('core.admin.basics.display_name_text'),
-            })
-          : ''}
-
-        {Object.keys(this.slugDriverOptions).map((model) => {
-          const options = this.slugDriverOptions[model];
-          if (Object.keys(options).length > 1) {
-            return this.buildSettingComponent({
-              type: 'select',
-              setting: `slug_driver_${model}`,
-              options,
-              label: app.translator.trans('core.admin.basics.slug_driver_heading', { model }),
-              help: app.translator.trans('core.admin.basics.slug_driver_text', { model }),
-            });
-          }
-        })}
-
-        {this.submitButton()}
-      </div>,
-    ];
+  changed() {
+    return this.fields.some((key) => this.values[key]() !== app.data.settings[key]);
   }
 
   /**
@@ -132,4 +210,27 @@ export default class BasicsPage extends AdminPage {
 
     return items;
   }
+
+  onsubmit(e) {
+    e.preventDefault();
+
+    if (this.loading) return;
+
+    this.loading = true;
+    app.alerts.dismiss(this.successAlert);
+
+    const settings = {};
+
+    this.fields.forEach((key) => (settings[key] = this.values[key]()));
+
+    saveSettings(settings)
+      .then(() => {
+        this.successAlert = app.alerts.show({ type: 'success' }, app.translator.trans('core.admin.basics.saved_message'));
+      })
+      .catch(() => {})
+      .then(() => {
+        this.loading = false;
+        m.redraw();
+      });
+  }
 }

js/src/admin/components/DashboardPage.js

@@ -1,20 +1,20 @@
+import Page from '../../common/components/Page';
 import StatusWidget from './StatusWidget';
 import ExtensionsWidget from './ExtensionsWidget';
+import AdminHeader from './AdminHeader';
 import ItemList from '../../common/utils/ItemList';
-import AdminPage from './AdminPage';
+import listItems from '../../common/helpers/listItems';
 
-export default class DashboardPage extends AdminPage {
-  headerInfo() {
-    return {
-      className: 'DashboardPage',
-      icon: 'fas fa-chart-bar',
-      title: app.translator.trans('core.admin.dashboard.title'),
-      description: app.translator.trans('core.admin.dashboard.description'),
-    };
-  }
-
-  content() {
-    return this.availableWidgets().toArray();
+export default class DashboardPage extends Page {
+  view() {
+    return (
+      <div className="DashboardPage">
+        <AdminHeader icon="fas fa-chart-bar" description={app.translator.trans('core.admin.dashboard.description')} className="DashboardPage-header">
+          {app.translator.trans('core.admin.dashboard.title')}
+        </AdminHeader>
+        <div className="container">{this.availableWidgets().toArray()}</div>
+      </div>
+    );
   }
 
   availableWidgets() {

js/src/admin/components/ExtensionPage.js

@@ -1,22 +1,27 @@
 import Button from '../../common/components/Button';
 import Link from '../../common/components/Link';
 import LinkButton from '../../common/components/LinkButton';
+import Page from '../../common/components/Page';
+import Select from '../../common/components/Select';
 import Switch from '../../common/components/Switch';
 import icon from '../../common/helpers/icon';
 import punctuateSeries from '../../common/helpers/punctuateSeries';
 import listItems from '../../common/helpers/listItems';
 import ItemList from '../../common/utils/ItemList';
+import Stream from '../../common/utils/Stream';
 import LoadingModal from './LoadingModal';
 import ExtensionPermissionGrid from './ExtensionPermissionGrid';
+import saveSettings from '../utils/saveSettings';
 import isExtensionEnabled from '../utils/isExtensionEnabled';
-import AdminPage from './AdminPage';
 
-export default class ExtensionPage extends AdminPage {
+export default class ExtensionPage extends Page {
   oninit(vnode) {
     super.oninit(vnode);
 
+    this.loading = false;
     this.extension = app.data.extensions[this.attrs.id];
     this.changingState = false;
+    this.settings = {};
 
     this.infoFields = {
       discuss: 'fas fa-comment-alt',
@@ -27,20 +32,18 @@ export default class ExtensionPage extends AdminPage {
       source: 'fas fa-code',
     };
 
-    if (!this.extension) {
-      return m.route.set(app.route('dashboard'));
+    // Backwards compatibility layer will be removed in
+    // Beta 16
+    if (app.extensionSettings[this.extension.id]) {
+      app.extensionData[this.extension.id] = app.extensionSettings[this.extension.id];
     }
   }
 
   className() {
-    if (!this.extension) return '';
-
     return this.extension.id + '-Page';
   }
 
   view() {
-    if (!this.extension) return null;
-
     return (
       <div className={'ExtensionPage ' + this.className()}>
         {this.header()}
@@ -56,8 +59,6 @@ export default class ExtensionPage extends AdminPage {
   }
 
   header() {
-    const isEnabled = this.isEnabled();
-
     return [
       <div className="ExtensionPage-header">
         <div className="container">
@@ -74,12 +75,10 @@ export default class ExtensionPage extends AdminPage {
           </div>
           <div className="helpText">{this.extension.description}</div>
           <div className="ExtensionPage-headerItems">
-            <Switch
-              state={this.changingState ? !isEnabled : isEnabled}
-              loading={this.changingState}
-              onchange={this.toggle.bind(this, this.extension.id)}
-            >
-              {isEnabled ? app.translator.trans('core.admin.extension.enabled') : app.translator.trans('core.admin.extension.disabled')}
+            <Switch state={this.isEnabled()} onchange={this.toggle.bind(this, this.extension.id)}>
+              {this.isEnabled(this.extension.id)
+                ? app.translator.trans('core.admin.extension.enabled')
+                : app.translator.trans('core.admin.extension.disabled')}
             </Switch>
             <aside className="ExtensionInfo">
               <ul>{listItems(this.infoItems().toArray())}</ul>
@@ -121,7 +120,11 @@ export default class ExtensionPage extends AdminPage {
     return (
       <div className="ExtensionPage-settings">
         <div className="container">
-          {settings ? (
+          {typeof app.extensionData[this.extension.id] === 'function' ? (
+            <Button onclick={app.extensionData[this.extension.id].bind(this)} className="Button Button--primary">
+              {app.translator.trans('core.admin.extension.open_modal')}
+            </Button>
+          ) : settings ? (
             <div className="Form">
               {settings.map(this.buildSettingComponent.bind(this))}
               <div className="Form-group">{this.submitButton()}</div>
@@ -197,6 +200,78 @@ export default class ExtensionPage extends AdminPage {
     return items;
   }
 
+  submitButton() {
+    return (
+      <Button onclick={this.saveSettings.bind(this)} className="Button Button--primary" loading={this.loading} disabled={!this.isChanged()}>
+        {app.translator.trans('core.admin.settings.submit_button')}
+      </Button>
+    );
+  }
+
+  /**
+   * getSetting takes a settings object and turns it into a component.
+   * Depending on the type of input, you can set the type to 'bool', 'select', or
+   * any standard <input> type.
+   *
+   * Alternatively, you can pass a callback that will be executed in ExtensionPage's
+   * context to include custom JSX elements.
+   *
+   * @example
+   *
+   * {
+   *    setting: 'acme.checkbox',
+   *    label: app.translator.trans('acme.admin.setting_label'),
+   *    type: 'bool'
+   * }
+   *
+   * @example
+   *
+   * {
+   *    setting: 'acme.select',
+   *    label: app.translator.trans('acme.admin.setting_label'),
+   *    type: 'select',
+   *    options: {
+   *      'option1': 'Option 1 label',
+   *      'option2': 'Option 2 label',
+   *    },
+   *    default: 'option1',
+   * }
+   *
+   * @param setting
+   * @returns {JSX.Element}
+   */
+  buildSettingComponent(entry) {
+    if (typeof entry === 'function') {
+      return entry.call(this);
+    }
+
+    const setting = entry.setting;
+    const value = this.setting([setting])();
+    if (['bool', 'checkbox', 'switch', 'boolean'].includes(entry.type)) {
+      return (
+        <div className="Form-group">
+          <Switch state={!!value && value !== '0'} onchange={this.settings[setting]}>
+            {entry.label}
+          </Switch>
+        </div>
+      );
+    } else if (['select', 'dropdown', 'selectdropdown'].includes(entry.type)) {
+      return (
+        <div className="Form-group">
+          <label>{entry.label}</label>
+          <Select value={value || entry.default} options={entry.options} buttonClassName="Button" onchange={this.settings[setting]} />
+        </div>
+      );
+    } else {
+      return (
+        <div className="Form-group">
+          <label>{entry.label}</label>
+          <input type={entry.type} className="FormControl" bidi={this.setting(setting)} />
+        </div>
+      );
+    }
+  }
+
   toggle() {
     const enabled = this.isEnabled();
 
@@ -217,8 +292,50 @@ export default class ExtensionPage extends AdminPage {
     app.modal.show(LoadingModal);
   }
 
+  dirty() {
+    const dirty = {};
+
+    Object.keys(this.settings).forEach((key) => {
+      const value = this.settings[key]();
+
+      if (value !== app.data.settings[key]) {
+        dirty[key] = value;
+      }
+    });
+
+    return dirty;
+  }
+
+  isChanged() {
+    return Object.keys(this.dirty()).length;
+  }
+
+  saveSettings(e) {
+    e.preventDefault();
+
+    app.alerts.clear();
+
+    this.loading = true;
+
+    saveSettings(this.dirty()).then(this.onsaved.bind(this));
+  }
+
+  onsaved() {
+    this.loading = false;
+
+    app.alerts.show({ type: 'success' }, app.translator.trans('core.admin.extension.saved_message'));
+  }
+
+  setting(key, fallback = '') {
+    this.settings[key] = this.settings[key] || Stream(app.data.settings[key] || fallback);
+
+    return this.settings[key];
+  }
+
   isEnabled() {
-    return isExtensionEnabled(this.extension.id);
+    let isEnabled = isExtensionEnabled(this.extension.id);
+
+    return this.changingState ? !isEnabled : isEnabled;
   }
 
   onerror(e) {
@@ -229,8 +346,6 @@ export default class ExtensionPage extends AdminPage {
       app.modal.close();
     }, 300); // Bootstrap's Modal.TRANSITION_DURATION is 300 ms.
 
-    this.changingState = false;
-
     if (e.status !== 409) {
       throw e;
     }

js/src/admin/components/ExtensionPermissionGrid.js

@@ -1,5 +1,4 @@
 import PermissionGrid from './PermissionGrid';
-import Button from '../../common/components/Button';
 import ItemList from '../../common/utils/ItemList';
 
 export default class ExtensionPermissionGrid extends PermissionGrid {
@@ -37,17 +36,4 @@ export default class ExtensionPermissionGrid extends PermissionGrid {
   moderateItems() {
     return app.extensionData.getExtensionPermissions(this.extensionId, 'moderate') || new ItemList();
   }
-
-  scopeControlItems() {
-    const items = new ItemList();
-
-    items.add(
-      'configureScopes',
-      <Button className="Button Button--text" onclick={() => m.route.set(app.route('permissions'))}>
-        {app.translator.trans('core.admin.extension.configure_scopes')}
-      </Button>
-    );
-
-    return items;
-  }
 }

js/src/admin/components/ExtensionsWidget.js

@@ -5,47 +5,42 @@ import Link from '../../common/components/Link';
 import icon from '../../common/helpers/icon';
 
 export default class ExtensionsWidget extends DashboardWidget {
-  oninit(vnode) {
-    super.oninit(vnode);
-
-    this.categorizedExtensions = getCategorizedExtensions();
-  }
-
   className() {
     return 'ExtensionsWidget';
   }
 
   content() {
+    const categorizedExtensions = getCategorizedExtensions();
     const categories = app.extensionCategories;
 
     return (
       <div className="ExtensionsWidget-list">
-        {Object.keys(categories).map((category) => (this.categorizedExtensions[category] ? this.extensionCategory(category) : ''))}
+        {Object.keys(categories).map((category) => {
+          if (categorizedExtensions[category]) {
+            return (
+              <div className="ExtensionList-Category">
+                <h4 className="ExtensionList-Label">{app.translator.trans(`core.admin.nav.categories.${category}`)}</h4>
+                <ul className="ExtensionList">
+                  {categorizedExtensions[category].map((extension) => {
+                    return (
+                      <li className={'ExtensionListItem ' + (!isExtensionEnabled(extension.id) ? 'disabled' : '')}>
+                        <Link href={app.route('extension', { id: extension.id })}>
+                          <div className="ExtensionListItem-content">
+                            <span className="ExtensionListItem-icon ExtensionIcon" style={extension.icon}>
+                              {extension.icon ? icon(extension.icon.name) : ''}
+                            </span>
+                            <span className="ExtensionListItem-title">{extension.extra['flarum-extension'].title}</span>
+                          </div>
+                        </Link>
+                      </li>
+                    );
+                  })}
+                </ul>
+              </div>
+            );
+          }
+        })}
       </div>
     );
   }
-
-  extensionCategory(category) {
-    return (
-      <div className="ExtensionList-Category">
-        <h4 className="ExtensionList-Label">{app.translator.trans(`core.admin.nav.categories.${category}`)}</h4>
-        <ul className="ExtensionList">{this.categorizedExtensions[category].map((extension) => this.extensionWidget(extension))}</ul>
-      </div>
-    );
-  }
-
-  extensionWidget(extension) {
-    return (
-      <li className={'ExtensionListItem ' + (!isExtensionEnabled(extension.id) ? 'disabled' : '')}>
-        <Link href={app.route('extension', { id: extension.id })}>
-          <div className="ExtensionListItem-content">
-            <span className="ExtensionListItem-icon ExtensionIcon" style={extension.icon}>
-              {extension.icon ? icon(extension.icon.name) : ''}
-            </span>
-            <span className="ExtensionListItem-title">{extension.extra['flarum-extension'].title}</span>
-          </div>
-        </Link>
-      </li>
-    );
-  }
 }

js/src/admin/components/MailPage.js

@@ -1,31 +1,34 @@
+import Page from '../../common/components/Page';
 import FieldSet from '../../common/components/FieldSet';
 import Button from '../../common/components/Button';
 import Alert from '../../common/components/Alert';
+import Select from '../../common/components/Select';
 import LoadingIndicator from '../../common/components/LoadingIndicator';
-import AdminPage from './AdminPage';
+import saveSettings from '../utils/saveSettings';
+import Stream from '../../common/utils/Stream';
+import icon from '../../common/helpers/icon';
+import AdminHeader from './AdminHeader';
 
-export default class MailPage extends AdminPage {
+export default class MailPage extends Page {
   oninit(vnode) {
     super.oninit(vnode);
 
+    this.saving = false;
     this.sendingTest = false;
     this.refresh();
   }
 
-  headerInfo() {
-    return {
-      className: 'MailPage',
-      icon: 'fas fa-envelope',
-      title: app.translator.trans('core.admin.email.title'),
-      description: app.translator.trans('core.admin.email.description'),
-    };
-  }
-
   refresh() {
     this.loading = true;
 
+    this.driverFields = {};
+    this.fields = ['mail_driver', 'mail_from'];
+    this.values = {};
     this.status = { sending: false, errors: {} };
 
+    const settings = app.data.settings;
+    this.fields.forEach((key) => (this.values[key] = Stream(settings[key])));
+
     app
       .request({
         method: 'GET',
@@ -36,78 +39,150 @@ export default class MailPage extends AdminPage {
         this.status.sending = response['data']['attributes']['sending'];
         this.status.errors = response['data']['attributes']['errors'];
 
+        for (const driver in this.driverFields) {
+          for (const field in this.driverFields[driver]) {
+            this.fields.push(field);
+            this.values[field] = Stream(settings[field]);
+          }
+        }
+
         this.loading = false;
         m.redraw();
       });
   }
 
-  content() {
-    if (this.loading) {
-      return <LoadingIndicator />;
+  view() {
+    if (this.loading || this.saving) {
+      return (
+        <div className="MailPage">
+          <div className="container">
+            <LoadingIndicator />
+          </div>
+        </div>
+      );
     }
 
-    const fields = this.driverFields[this.setting('mail_driver')()];
+    const fields = this.driverFields[this.values.mail_driver()];
     const fieldKeys = Object.keys(fields);
 
     return (
-      <div className="Form">
-        {this.buildSettingComponent({
-          type: 'text',
-          setting: 'mail_from',
-          label: app.translator.trans('core.admin.email.addresses_heading'),
-          className: 'MailPage-MailSettings',
-        })}
-        {this.buildSettingComponent({
-          type: 'select',
-          setting: 'mail_driver',
-          options: Object.keys(this.driverFields).reduce((memo, val) => ({ ...memo, [val]: val }), {}),
-          label: app.translator.trans('core.admin.email.driver_heading'),
-          className: 'MailPage-MailSettings',
-        })}
-        {this.status.sending ||
-          Alert.component(
-            {
-              dismissible: false,
-            },
-            app.translator.trans('core.admin.email.not_sending_message')
-          )}
+      <div className="MailPage">
+        <AdminHeader icon="fas fa-envelope" description={app.translator.trans('core.admin.email.description')} className="MailPage-header">
+          {app.translator.trans('core.admin.email.title')}
+        </AdminHeader>
+        <div className="container">
+          <form onsubmit={this.onsubmit.bind(this)}>
+            {FieldSet.component(
+              {
+                label: app.translator.trans('core.admin.email.addresses_heading'),
+                className: 'MailPage-MailSettings',
+              },
+              [
+                <div className="MailPage-MailSettings-input">
+                  <label>
+                    {app.translator.trans('core.admin.email.from_label')}
+                    <input className="FormControl" bidi={this.values.mail_from} />
+                  </label>
+                </div>,
+              ]
+            )}
 
-        {fieldKeys.length > 0 && (
-          <FieldSet label={app.translator.trans(`core.admin.email.${this.setting('mail_driver')()}_heading`)} className="MailPage-MailSettings">
-            <div className="MailPage-MailSettings-input">
-              {fieldKeys.map((field) => {
-                const fieldInfo = fields[field];
+            {FieldSet.component(
+              {
+                label: app.translator.trans('core.admin.email.driver_heading'),
+                className: 'MailPage-MailSettings',
+              },
+              [
+                <div className="MailPage-MailSettings-input">
+                  <label>
+                    {app.translator.trans('core.admin.email.driver_label')}
+                    <Select
+                      value={this.values.mail_driver()}
+                      options={Object.keys(this.driverFields).reduce((memo, val) => ({ ...memo, [val]: val }), {})}
+                      onchange={this.values.mail_driver}
+                    />
+                  </label>
+                </div>,
+              ]
+            )}
 
-                return [
-                  this.buildSettingComponent({
-                    type: typeof this.setting(field)() === 'string' ? 'text' : 'select',
-                    label: app.translator.trans(`core.admin.email.${field}_label`),
-                    setting: field,
-                    options: fieldInfo,
-                  }),
-                  this.status.errors[field] && <p className="ValidationError">{this.status.errors[field]}</p>,
-                ];
-              })}
-            </div>
-          </FieldSet>
-        )}
-        {this.submitButton()}
+            {this.status.sending ||
+              Alert.component(
+                {
+                  dismissible: false,
+                },
+                app.translator.trans('core.admin.email.not_sending_message')
+              )}
 
-        <FieldSet label={app.translator.trans('core.admin.email.send_test_mail_heading')} className="MailPage-MailSettings">
-          <div className="helpText">{app.translator.trans('core.admin.email.send_test_mail_text', { email: app.session.user.email() })}</div>
-          {Button.component(
-            {
-              className: 'Button Button--primary',
-              disabled: this.sendingTest || this.isChanged(),
-              onclick: () => this.sendTestEmail(),
-            },
-            app.translator.trans('core.admin.email.send_test_mail_button')
-          )}
-        </FieldSet>
+            {fieldKeys.length > 0 &&
+              FieldSet.component(
+                {
+                  label: app.translator.trans(`core.admin.email.${this.values.mail_driver()}_heading`),
+                  className: 'MailPage-MailSettings',
+                },
+                [
+                  <div className="MailPage-MailSettings-input">
+                    {fieldKeys.map((field) => [
+                      <label>
+                        {app.translator.trans(`core.admin.email.${field}_label`)}
+                        {this.renderField(field)}
+                      </label>,
+                      this.status.errors[field] && <p className="ValidationError">{this.status.errors[field]}</p>,
+                    ])}
+                  </div>,
+                ]
+              )}
+
+            <FieldSet>
+              {Button.component(
+                {
+                  type: 'submit',
+                  className: 'Button Button--primary',
+                  disabled: !this.changed(),
+                },
+                app.translator.trans('core.admin.email.submit_button')
+              )}
+            </FieldSet>
+
+            {FieldSet.component(
+              {
+                label: app.translator.trans('core.admin.email.send_test_mail_heading'),
+                className: 'MailPage-MailSettings',
+              },
+              [
+                <div className="helpText">{app.translator.trans('core.admin.email.send_test_mail_text', { email: app.session.user.email() })}</div>,
+                Button.component(
+                  {
+                    className: 'Button Button--primary',
+                    disabled: this.sendingTest || this.changed(),
+                    onclick: () => this.sendTestEmail(),
+                  },
+                  app.translator.trans('core.admin.email.send_test_mail_button')
+                ),
+              ]
+            )}
+          </form>
+        </div>
       </div>
     );
   }
 
+  renderField(name) {
+    const driver = this.values.mail_driver();
+    const field = this.driverFields[driver][name];
+    const prop = this.values[name];
+
+    if (typeof field === 'string') {
+      return <input className="FormControl" bidi={prop} />;
+    } else {
+      return <Select value={prop()} options={field} onchange={prop} />;
+    }
+  }
+
+  changed() {
+    return this.fields.some((key) => this.values[key]() !== app.data.settings[key]);
+  }
+
   sendTestEmail() {
     if (this.saving || this.sendingTest) return;
 
@@ -130,7 +205,26 @@ export default class MailPage extends AdminPage {
       });
   }
 
-  saveSettings(e) {
-    super.saveSettings(e).then(this.refresh());
+  onsubmit(e) {
+    e.preventDefault();
+
+    if (this.saving || this.sendingTest) return;
+
+    this.saving = true;
+    app.alerts.dismiss(this.successAlert);
+
+    const settings = {};
+
+    this.fields.forEach((key) => (settings[key] = this.values[key]()));
+
+    saveSettings(settings)
+      .then(() => {
+        this.successAlert = app.alerts.show({ type: 'success' }, app.translator.trans('core.admin.basics.saved_message'));
+      })
+      .catch(() => {})
+      .then(() => {
+        this.saving = false;
+        this.refresh();
+      });
   }
 }

js/src/admin/components/PermissionGrid.js

@@ -326,30 +326,10 @@ export default class PermissionGrid extends Component {
       60
     );
 
-    items.add(
-      'userEditCredentials',
-      {
-        icon: 'fas fa-user-cog',
-        label: app.translator.trans('core.admin.permissions.edit_users_credentials_label'),
-        permission: 'user.editCredentials',
-      },
-      60
-    );
-
-    items.add(
-      'userEditGroups',
-      {
-        icon: 'fas fa-users-cog',
-        label: app.translator.trans('core.admin.permissions.edit_users_groups_label'),
-        permission: 'user.editGroups',
-      },
-      60
-    );
-
     items.add(
       'userEdit',
       {
-        icon: 'fas fa-address-card',
+        icon: 'fas fa-user-cog',
         label: app.translator.trans('core.admin.permissions.edit_users_label'),
         permission: 'user.edit',
       },

js/src/admin/components/PermissionsPage.js

@@ -1,43 +1,44 @@
+import Page from '../../common/components/Page';
 import GroupBadge from '../../common/components/GroupBadge';
 import EditGroupModal from './EditGroupModal';
 import Group from '../../common/models/Group';
 import icon from '../../common/helpers/icon';
 import PermissionGrid from './PermissionGrid';
-import AdminPage from './AdminPage';
+import AdminHeader from './AdminHeader';
 
-export default class PermissionsPage extends AdminPage {
-  headerInfo() {
-    return {
-      className: 'PermissionsPage',
-      icon: 'fas fa-key',
-      title: app.translator.trans('core.admin.permissions.title'),
-      description: app.translator.trans('core.admin.permissions.description'),
-    };
-  }
-
-  content() {
-    return [
-      <div className="PermissionsPage-groups">
-        {app.store
-          .all('groups')
-          .filter((group) => [Group.GUEST_ID, Group.MEMBER_ID].indexOf(group.id()) === -1)
-          .map((group) => (
-            <button className="Button Group" onclick={() => app.modal.show(EditGroupModal, { group })}>
-              {GroupBadge.component({
-                group,
-                className: 'Group-icon',
-                label: null,
-              })}
-              <span className="Group-name">{group.namePlural()}</span>
+export default class PermissionsPage extends Page {
+  view() {
+    return (
+      <div className="PermissionsPage">
+        <AdminHeader icon="fas fa-key" description={app.translator.trans('core.admin.permissions.description')} className="PermissionsPage-header">
+          {app.translator.trans('core.admin.permissions.title')}
+        </AdminHeader>
+        <div className="PermissionsPage-groups">
+          <div className="container">
+            {app.store
+              .all('groups')
+              .filter((group) => [Group.GUEST_ID, Group.MEMBER_ID].indexOf(group.id()) === -1)
+              .map((group) => (
+                <button className="Button Group" onclick={() => app.modal.show(EditGroupModal, { group })}>
+                  {GroupBadge.component({
+                    group,
+                    className: 'Group-icon',
+                    label: null,
+                  })}
+                  <span className="Group-name">{group.namePlural()}</span>
+                </button>
+              ))}
+            <button className="Button Group Group--add" onclick={() => app.modal.show(EditGroupModal)}>
+              {icon('fas fa-plus', { className: 'Group-icon' })}
+              <span className="Group-name">{app.translator.trans('core.admin.permissions.new_group_button')}</span>
             </button>
-          ))}
-        <button className="Button Group Group--add" onclick={() => app.modal.show(EditGroupModal)}>
-          {icon('fas fa-plus', { className: 'Group-icon' })}
-          <span className="Group-name">{app.translator.trans('core.admin.permissions.new_group_button')}</span>
-        </button>
-      </div>,
+          </div>
+        </div>
 
-      <div className="PermissionsPage-permissions">{PermissionGrid.component()}</div>,
-    ];
+        <div className="PermissionsPage-permissions">
+          <div className="container">{PermissionGrid.component()}</div>
+        </div>
+      </div>
+    );
   }
 }

js/src/admin/index.js

@@ -1,4 +1,9 @@
-import app from './app';
+import AdminApplication from './AdminApplication';
+
+const app = new AdminApplication();
+
+// Backwards compatibility
+window.app = app;
 
 export { app };
 

js/src/admin/utils/getCategorizedExtensions.js

@@ -15,9 +15,9 @@ export default function getCategorizedExtensions() {
 
       extensions[category].push(extension);
     } else {
-      extensions.feature = extensions.feature || [];
+      extensions.other = extensions.other || [];
 
-      extensions.feature.push(extension);
+      extensions.other.push(extension);
     }
   });
 

js/src/common/Application.js

@@ -159,8 +159,6 @@ export default class Application {
   title = '';
   titleCount = 0;
 
-  initialRoute;
-
   load(payload) {
     this.data = payload;
     this.translator.locale = payload.locale;
@@ -176,8 +174,6 @@ export default class Application {
     this.session = new Session(this.store.getById('users', this.data.session.userId), this.data.session.csrfToken);
 
     this.mount();
-
-    this.initialRoute = window.location.href;
   }
 
   bootExtensions(extensions) {
@@ -230,8 +226,7 @@ export default class Application {
    * @public
    */
   preloadedApiDocument() {
-    // If the URL has changed, the preloaded Api document is invalid.
-    if (this.data.apiDocument && window.location.href === this.initialRoute) {
+    if (this.data.apiDocument) {
       const results = this.store.pushPayload(this.data.apiDocument);
 
       this.data.apiDocument = null;

js/src/common/Component.ts

@@ -77,12 +77,12 @@ export default abstract class Component<T extends ComponentAttrs = ComponentAttr
    * containing all of the `li` elements inside the DOM element of this
    * component.
    *
-   * @param [selector] a jQuery-compatible selector string
-   * @returns the jQuery object for the DOM node
+   * @param {String} [selector] a jQuery-compatible selector string
+   * @returns {jQuery} the jQuery object for the DOM node
    * @final
    */
-  protected $(selector: string): JQuery {
-    const $element = $(this.element) as JQuery<HTMLElement>;
+  protected $(selector) {
+    const $element = $(this.element);
 
     return selector ? $element.find(selector) : $element;
   }
@@ -94,7 +94,7 @@ export default abstract class Component<T extends ComponentAttrs = ComponentAttr
    * @see https://mithril.js.org/hyperscript.html#mselector,-attributes,-children
    */
   static component(attrs = {}, children = null): Mithril.Vnode {
-    const componentAttrs = Object.assign({}, attrs) as Record<string, unknown>;
+    const componentAttrs = Object.assign({}, attrs);
 
     return m(this as any, componentAttrs, children);
   }

js/src/common/compat.js

@@ -1,7 +1,6 @@
 import * as extend from './extend';
 import Session from './Session';
 import Store from './Store';
-import BasicEditorDriver from './utils/BasicEditorDriver';
 import evented from './utils/evented';
 import liveHumanTimes from './utils/liveHumanTimes';
 import ItemList from './utils/ItemList';
@@ -20,6 +19,7 @@ import extract from './utils/extract';
 import ScrollListener from './utils/ScrollListener';
 import stringToColor from './utils/stringToColor';
 import subclassOf from './utils/subclassOf';
+import SuperTextarea from './utils/SuperTextarea';
 import patchMithril from './utils/patchMithril';
 import proxifyCompat from './utils/proxifyCompat';
 import classList from './utils/classList';
@@ -57,8 +57,6 @@ import ModalManager from './components/ModalManager';
 import Button from './components/Button';
 import Modal from './components/Modal';
 import GroupBadge from './components/GroupBadge';
-import TextEditor from './components/TextEditor';
-import TextEditorButton from './components/TextEditorButton';
 import Model from './Model';
 import Application from './Application';
 import fullTime from './helpers/fullTime';
@@ -77,7 +75,6 @@ export default {
   extend: extend,
   Session: Session,
   Store: Store,
-  'utils/BasicEditorDriver': BasicEditorDriver,
   'utils/evented': evented,
   'utils/liveHumanTimes': liveHumanTimes,
   'utils/ItemList': ItemList,
@@ -95,6 +92,7 @@ export default {
   'utils/stringToColor': stringToColor,
   'utils/Stream': Stream,
   'utils/subclassOf': subclassOf,
+  'utils/SuperTextarea': SuperTextarea,
   'utils/setRouteWithForcedRefresh': setRouteWithForcedRefresh,
   'utils/patchMithril': patchMithril,
   'utils/proxifyCompat': proxifyCompat,
@@ -134,8 +132,6 @@ export default {
   'components/Button': Button,
   'components/Modal': Modal,
   'components/GroupBadge': GroupBadge,
-  'components/TextEditor': TextEditor,
-  'components/TextEditorButton': TextEditorButton,
   Model: Model,
   Application: Application,
   'helpers/fullTime': fullTime,

js/src/common/components/Dropdown.js

@@ -13,7 +13,6 @@ import listItems from '../helpers/listItems';
  * - `icon` The name of an icon to show in the dropdown toggle button.
  * - `caretIcon` The name of an icon to show on the right of the button.
  * - `label` The label of the dropdown toggle button. Defaults to 'Controls'.
- * - `accessibleToggleLabel` The label used to describe the dropdown toggle button to assistive readers. Defaults to 'Toggle dropdown menu'.
  * - `onhide`
  * - `onshow`
  *
@@ -26,7 +25,6 @@ export default class Dropdown extends Component {
     attrs.menuClassName = attrs.menuClassName || '';
     attrs.label = attrs.label || '';
     attrs.caretIcon = typeof attrs.caretIcon !== 'undefined' ? attrs.caretIcon : 'fas fa-caret-down';
-    attrs.accessibleToggleLabel = attrs.accessibleToggleLabel || app.translator.trans('core.lib.dropdown.toggle_dropdown_accessible_label');
   }
 
   oninit(vnode) {
@@ -94,13 +92,7 @@ export default class Dropdown extends Component {
    */
   getButton(children) {
     return (
-      <button
-        className={'Dropdown-toggle ' + this.attrs.buttonClassName}
-        aria-haspopup="menu"
-        aria-label={this.attrs.accessibleToggleLabel}
-        data-toggle="dropdown"
-        onclick={this.attrs.onclick}
-      >
+      <button className={'Dropdown-toggle ' + this.attrs.buttonClassName} data-toggle="dropdown" onclick={this.attrs.onclick}>
         {this.getButtonContent(children)}
       </button>
     );

js/src/common/components/LoadingIndicator.js

@@ -0,0 +1,43 @@
+import Component from '../Component';
+import { Spinner } from 'spin.js';
+
+/**
+ * The `LoadingIndicator` component displays a loading spinner with spin.js.
+ *
+ * ### Attrs
+ *
+ * - `size` The spin.js size preset to use. Defaults to 'small'.
+ *
+ * All other attrs will be assigned as attributes on the DOM element.
+ */
+export default class LoadingIndicator extends Component {
+  view() {
+    const attrs = Object.assign({}, this.attrs);
+
+    attrs.className = 'LoadingIndicator ' + (attrs.className || '');
+    delete attrs.size;
+
+    return <div {...attrs}>{m.trust('&nbsp;')}</div>;
+  }
+
+  oncreate(vnode) {
+    super.oncreate(vnode);
+
+    const options = { zIndex: 'auto', color: this.$().css('color') };
+
+    switch (this.attrs.size) {
+      case 'large':
+        Object.assign(options, { lines: 10, length: 8, width: 4, radius: 8 });
+        break;
+
+      case 'tiny':
+        Object.assign(options, { lines: 8, length: 2, width: 2, radius: 3 });
+        break;
+
+      default:
+        Object.assign(options, { lines: 8, length: 4, width: 3, radius: 5 });
+    }
+
+    new Spinner(options).spin(this.element);
+  }
+}

js/src/common/components/LoadingIndicator.tsx

@@ -1,61 +0,0 @@
-import Component, { ComponentAttrs } from '../Component';
-import classList from '../utils/classList';
-
-export interface LoadingIndicatorAttrs extends ComponentAttrs {
-  /**
-   * Custom classes fro the loading indicator's container.
-   */
-  className?: string;
-  /**
-   * Custom classes for the loading indicator's container.
-   */
-  containerClassName?: string;
-  /**
-   * Optional size to specify for the loading indicator.
-   */
-  size?: 'large' | 'medium' | 'small';
-  /**
-   * Optional attributes to apply to the loading indicator's container.
-   */
-  containerAttrs?: Partial<ComponentAttrs>;
-}
-
-/**
- * The `LoadingIndicator` component displays a simple CSS-based loading spinner.
- *
- * To set a custom color, use the CSS `color` property.
- *
- * To increase spacing around the spinner, use the CSS `height` property on the
- * spinner's **container**.
- *
- * To apply a custom size to the loading indicator, set the `--size` and
- * `--thickness` custom properties on the loading indicator itself.
- *
- * If you really want to change how this looks as part of your custom theme,
- * you can override the `border-radius` and `border` then set either a
- * background image, or use `content: "\<glyph>"` (e.g. `content: "\f1ce"`)
- * and `font-family: 'Font Awesome 5 Free'` to set an FA icon if you'd rather.
- *
- * ### Attrs
- *
- * - `containerClassName` Class name(s) to apply to the indicator's parent
- * - `className` Class name(s) to apply to the indicator itself
- * - `size` Size of the loading indicator
- * - `containerAttrs` Optional attrs to be applied to the container DOM element
- *
- * All other attrs will be assigned as attributes on the DOM element.
- */
-export default class LoadingIndicator extends Component<LoadingIndicatorAttrs> {
-  view() {
-    const { size, ...attrs } = this.attrs;
-
-    attrs.className = classList({ LoadingIndicator: true, [attrs.className || '']: true });
-    attrs.containerClassName = classList({ 'LoadingIndicator-container': true, [attrs.containerClassName || '']: true });
-
-    return (
-      <div {...attrs.containerAttrs} data-size={size} className={attrs.containerClassName}>
-        <div {...attrs}></div>
-      </div>
-    );
-  }
-}

js/src/common/components/SplitDropdown.js

@@ -24,12 +24,7 @@ export default class SplitDropdown extends Dropdown {
 
     return [
       Button.component(buttonAttrs, firstChild.children),
-      <button
-        className={'Dropdown-toggle Button Button--icon ' + this.attrs.buttonClassName}
-        aria-haspopup="menu"
-        aria-label={this.attrs.accessibleToggleLabel}
-        data-toggle="dropdown"
-      >
+      <button className={'Dropdown-toggle Button Button--icon ' + this.attrs.buttonClassName} data-toggle="dropdown">
         {icon(this.attrs.icon, { className: 'Button-icon' })}
         {icon('fas fa-caret-down', { className: 'Button-caret' })}
       </button>,

js/src/common/helpers/avatar.js

@@ -1,28 +1,26 @@
-import * as Mithril from 'mithril';
-import User from '../models/User';
-
 /**
  * The `avatar` helper displays a user's avatar.
  *
- * @param user
- * @param attrs Attributes to apply to the avatar element
+ * @param {User} user
+ * @param {Object} attrs Attributes to apply to the avatar element
+ * @return {Object}
  */
-export default function avatar(user: User, attrs: Object = {}): Mithril.Vnode {
+export default function avatar(user, attrs = {}) {
   attrs.className = 'Avatar ' + (attrs.className || '');
-  let content: string = '';
+  let content = '';
 
   // If the `title` attribute is set to null or false, we don't want to give the
   // avatar a title. On the other hand, if it hasn't been given at all, we can
   // safely default it to the user's username.
-  const hasTitle: boolean | string = attrs.title === 'undefined' || attrs.title;
+  const hasTitle = attrs.title === 'undefined' || attrs.title;
   if (!hasTitle) delete attrs.title;
 
   // If a user has been passed, then we will set up an avatar using their
   // uploaded image, or the first letter of their username if they haven't
   // uploaded one.
   if (user) {
-    const username: string = user.displayName() || '?';
-    const avatarUrl: string = user.avatarUrl();
+    const username = user.displayName() || '?';
+    const avatarUrl = user.avatarUrl();
 
     if (hasTitle) attrs.title = attrs.title || username;
 

js/src/common/helpers/highlight.js

@@ -1,16 +1,16 @@
-import * as Mithril from 'mithril';
 import { truncate } from '../utils/string';
 
 /**
  * The `highlight` helper searches for a word phrase in a string, and wraps
  * matches with the <mark> tag.
  *
- * @param string The string to highlight.
- * @param phrase The word or words to highlight.
- * @param [length] The number of characters to truncate the string to.
+ * @param {String} string The string to highlight.
+ * @param {String|RegExp} phrase The word or words to highlight.
+ * @param {Integer} [length] The number of characters to truncate the string to.
  *     The string will be truncated surrounding the first match.
+ * @return {Object}
  */
-export default function highlight(string: string, phrase: string | RegExp, length?: number): Mithril.Vnode<any, any> | string {
+export default function highlight(string, phrase, length) {
   if (!phrase && !length) return string;
 
   // Convert the word phrase into a global regular expression (if it isn't

js/src/common/helpers/listItems.js

@@ -1,16 +1,15 @@
-import * as Mithril from 'mithril';
 import Separator from '../components/Separator';
 import classList from '../utils/classList';
 
-function isSeparator(item): boolean {
+function isSeparator(item) {
   return item.tag === Separator;
 }
 
-function withoutUnnecessarySeparators(items: Array<Mithril.Vnode>): Array<Mithril.Vnode> {
+function withoutUnnecessarySeparators(items) {
   const newItems = [];
   let prevItem;
 
-  items.filter(Boolean).forEach((item: Mithril.Vnode, i: number) => {
+  items.filter(Boolean).forEach((item, i) => {
     if (!isSeparator(item) || (prevItem && !isSeparator(prevItem) && i !== items.length - 1)) {
       prevItem = item;
       newItems.push(item);
@@ -23,11 +22,14 @@ function withoutUnnecessarySeparators(items: Array<Mithril.Vnode>): Array<Mithri
 /**
  * The `listItems` helper wraps a collection of components in <li> tags,
  * stripping out any unnecessary `Separator` components.
+ *
+ * @param {*} items
+ * @return {Array}
  */
-export default function listItems(items: Mithril.Vnode | Array<Mithril.Vnode>): Array<Mithril.Vnode> {
+export default function listItems(items) {
   if (!(items instanceof Array)) items = [items];
 
-  return withoutUnnecessarySeparators(items).map((item: Mithril.Vnode) => {
+  return withoutUnnecessarySeparators(items).map((item) => {
     const isListItem = item.tag && item.tag.isListItem;
     const active = item.tag && item.tag.isActive && item.tag.isActive(item.attrs);
     const className = (item.attrs && item.attrs.itemClassName) || item.itemClassName;
@@ -38,7 +40,7 @@ export default function listItems(items: Mithril.Vnode | Array<Mithril.Vnode>):
       item.key = item.attrs.key;
     }
 
-    const node: Mithril.Vnode = isListItem ? (
+    const node = isListItem ? (
       item
     ) : (
       <li

js/src/common/helpers/userOnline.js

@@ -1,11 +1,12 @@
-import * as Mithril from 'mithril';
-import User from '../models/User';
 import icon from './icon';
 
 /**
  * The `useronline` helper displays a green circle if the user is online
+ *
+ * @param {User} user
+ * @return {Object}
  */
-export default function userOnline(user: User): Mithril.Vnode {
+export default function userOnline(user) {
   if (user.lastSeenAt() && user.isOnline()) {
     return <span className="UserOnline">{icon('fas fa-circle')}</span>;
   }

js/src/common/helpers/username.js

@@ -1,11 +1,11 @@
-import * as Mithril from 'mithril';
-import User from '../models/User';
-
 /**
  * The `username` helper displays a user's username in a <span class="username">
  * tag. If the user doesn't exist, the username will be displayed as [deleted].
+ *
+ * @param {User} user
+ * @return {Object}
  */
-export default function username(user: User): Mithril.Vnode {
+export default function username(user) {
   const name = (user && user.displayName()) || app.translator.trans('core.lib.username.deleted_text');
 
   return <span className="username">{name}</span>;

js/src/common/index.js

@@ -1,8 +1,7 @@
-// Expose jQuery, mithril and dayjs to the window browser object
-import 'expose-loader?exposes=$,jQuery!jquery';
-import 'expose-loader?exposes=m!mithril';
-import 'expose-loader?exposes=dayjs!dayjs';
-
+import 'expose-loader?$!expose-loader?jQuery!jquery';
+import 'expose-loader?m!mithril';
+import 'expose-loader?dayjs!dayjs';
+import 'expose-loader?m.bidi!m.attrs.bidi';
 import 'bootstrap/js/affix';
 import 'bootstrap/js/dropdown';
 import 'bootstrap/js/modal';

js/src/common/models/User.js

@@ -30,8 +30,6 @@ Object.assign(User.prototype, {
   commentCount: Model.attribute('commentCount'),
 
   canEdit: Model.attribute('canEdit'),
-  canEditCredentials: Model.attribute('canEditCredentials'),
-  canEditGroups: Model.attribute('canEditGroups'),
   canDelete: Model.attribute('canDelete'),
 
   avatarColor: null,

js/src/common/utils/BasicEditorDriver.ts

@@ -1,124 +0,0 @@
-import getCaretCoordinates from 'textarea-caret';
-import EditorDriverInterface, { EditorDriverParams } from './EditorDriverInterface';
-
-export default class BasicEditorDriver implements EditorDriverInterface {
-  el: HTMLTextAreaElement;
-
-  constructor(dom: HTMLElement, params: EditorDriverParams) {
-    this.el = document.createElement('textarea');
-
-    this.build(dom, params);
-  }
-
-  build(dom: HTMLElement, params: EditorDriverParams) {
-    this.el.className = params.classNames.join(' ');
-    this.el.disabled = params.disabled;
-    this.el.placeholder = params.placeholder;
-    this.el.value = params.value;
-
-    const callInputListeners = (e) => {
-      params.inputListeners.forEach((listener) => {
-        listener();
-      });
-
-      e.redraw = false;
-    };
-
-    this.el.oninput = (e) => {
-      params.oninput(this.el.value);
-      callInputListeners(e);
-    };
-
-    this.el.onclick = callInputListeners;
-    this.el.onkeyup = callInputListeners;
-
-    this.el.addEventListener('keydown', function (e) {
-      if ((e.metaKey || e.ctrlKey) && e.key === 'Enter') {
-        params.onsubmit();
-      }
-    });
-
-    dom.append(this.el);
-  }
-
-  protected setValue(value: string) {
-    $(this.el).val(value).trigger('input');
-
-    this.el.dispatchEvent(new CustomEvent('input', { bubbles: true, cancelable: true }));
-  }
-
-  moveCursorTo(position: number) {
-    this.setSelectionRange(position, position);
-  }
-
-  getSelectionRange(): Array<number> {
-    return [this.el.selectionStart, this.el.selectionEnd];
-  }
-
-  getLastNChars(n: number): string {
-    const value = this.el.value;
-
-    return value.slice(Math.max(0, this.el.selectionStart - n), this.el.selectionStart);
-  }
-
-  insertAtCursor(text: string) {
-    this.insertAt(this.el.selectionStart, text);
-  }
-
-  insertAt(pos: number, text: string) {
-    this.insertBetween(pos, pos, text);
-  }
-
-  insertBetween(start: number, end: number, text: string) {
-    const value = this.el.value;
-
-    const before = value.slice(0, start);
-    const after = value.slice(end);
-
-    this.setValue(`${before}${text}${after}`);
-
-    // Move the textarea cursor to the end of the content we just inserted.
-    this.moveCursorTo(start + text.length);
-  }
-
-  replaceBeforeCursor(start: number, text: string) {
-    this.insertBetween(start, this.el.selectionStart, text);
-  }
-
-  protected setSelectionRange(start: number, end: number) {
-    this.el.setSelectionRange(start, end);
-    this.focus();
-  }
-
-  getCaretCoordinates(position: number) {
-    const relCoords = getCaretCoordinates(this.el, position);
-
-    return {
-      top: relCoords.top - this.el.scrollTop,
-      left: relCoords.left,
-    };
-  }
-
-  // DOM Interactions
-
-  /**
-   * Set the disabled status of the editor.
-   */
-  disabled(disabled: boolean) {
-    this.el.disabled = disabled;
-  }
-
-  /**
-   * Focus on the editor.
-   */
-  focus() {
-    this.el.focus();
-  }
-
-  /**
-   * Destroy the editor
-   */
-  destroy() {
-    this.el.remove();
-  }
-}

js/src/common/utils/Drawer.js

@@ -31,24 +31,7 @@ export default class Drawer {
    * @public
    */
   hide() {
-    /**
-     * As part of hiding the drawer, this function also ensures that the drawer
-     * correctly animates out, while ensuring it is not part of the navigation
-     * tree while off-screen.
-     *
-     * More info: https://github.com/flarum/core/pull/2666#discussion_r595381014
-     */
-
-    const $app = $('#app');
-
-    if (!$app.hasClass('drawerOpen')) return;
-
-    const $drawer = $('#drawer');
-
-    // Used to prevent `visibility: hidden` from breaking the exit animation
-    $drawer.css('visibility', 'visible').one('transitionend', () => $drawer.css('visibility', ''));
-
-    $app.removeClass('drawerOpen');
+    $('#app').removeClass('drawerOpen');
 
     if (this.$backdrop) this.$backdrop.remove();
   }

js/src/common/utils/EditorDriverInterface.ts

@@ -1,105 +0,0 @@
-export interface EditorDriverParams {
-  /**
-   * An array of HTML class names to apply to the editor's main DOM element.
-   */
-  classNames: string[];
-
-  /**
-   * Whether the editor should be initially disabled.
-   */
-  disabled: boolean;
-
-  /**
-   * An optional placeholder for the editor.
-   */
-  placeholder: string;
-
-  /**
-   * An optional initial value for the editor.
-   */
-  value: string;
-
-  /**
-   * This is separate from inputListeners since the full serialized content will be passed to it.
-   * It is considered private API, and should not be used/modified by extensions not implementing
-   * EditorDriverInterface.
-   */
-  oninput: Function;
-
-  /**
-   * Each of these functions will be called on click, input, and keyup.
-   * No arguments will be passed.
-   */
-  inputListeners: Function[];
-
-  /**
-   * This function will be called if submission is triggered programmatically via keybind.
-   * No arguments should be passed.
-   */
-  onsubmit: Function;
-}
-
-export default interface EditorDriverInterface {
-  /**
-   * Focus the editor and place the cursor at the given position.
-   */
-  moveCursorTo(position: number): void;
-
-  /**
-   * Get the selected range of the editor.
-   */
-  getSelectionRange(): Array<number>;
-
-  /**
-   * Get the last N characters from the current "text block".
-   *
-   * A textarea-based driver would just return the last N characters,
-   * but more advanced implementations might restrict to the current block.
-   *
-   * This is useful for monitoring recent user input to trigger autocomplete.
-   */
-  getLastNChars(n: number): string;
-
-  /**
-   * Insert content into the editor at the position of the cursor.
-   */
-  insertAtCursor(text: string, escape: boolean): void;
-
-  /**
-   * Insert content into the editor at the given position.
-   */
-  insertAt(pos: number, text: string, escape: boolean): void;
-
-  /**
-   * Insert content into the editor between the given positions.
-   *
-   * If the start and end positions are different, any text between them will be
-   * overwritten.
-   */
-  insertBetween(start: number, end: number, text: string, escape: boolean): void;
-
-  /**
-   * Replace existing content from the start to the current cursor position.
-   */
-  replaceBeforeCursor(start: number, text: string, escape: boolean): void;
-
-  /**
-   * Get left and top coordinates of the caret relative to the editor viewport.
-   */
-  getCaretCoordinates(position: number): { left: number; top: number };
-
-  /**
-   * Set the disabled status of the editor.
-   */
-  disabled(disabled: boolean): void;
-
-  /**
-   * Focus on the editor.
-   */
-  focus(): void;
-
-  /**
-   * Destroy the editor
-   */
-  destroy(): void;
-}

js/src/common/utils/Pagination.ts

@@ -0,0 +1,80 @@
+export default class Pagination<T> {
+  private readonly loadFunction: (page: number) => Promise<any>;
+
+  public loading = {
+    prev: false,
+    next: false,
+  };
+
+  public page: number;
+
+  public data: { [page: number]: T } = {};
+
+  public pages: {
+    first: number;
+    last: number;
+  };
+
+  constructor(load: (page: number) => Promise<any>, page: number = 1) {
+    this.loadFunction = load;
+    this.page = page;
+
+    this.pages = {
+      first: page,
+      last: page,
+    };
+  }
+
+  clear() {
+    this.data = {};
+  }
+
+  refresh(page: number) {
+    this.clear();
+
+    this.page = page;
+    this.pages.last = page - 1;
+    this.pages.first = page;
+
+    return this.loadNext();
+  }
+
+  loadNext() {
+    this.loading.next = true;
+    const page = this.pages.last + 1;
+
+    return this.load(
+      page,
+      () => (this.loading.next = false),
+      () => (this.pages.last = this.page = page)
+    );
+  }
+
+  loadPrev() {
+    this.loading.prev = true;
+    const page = this.pages.first - 1;
+
+    return this.load(
+      page,
+      () => (this.loading.prev = false),
+      () => (this.pages.first = this.page = page)
+    );
+  }
+
+  private load(page, done, success) {
+    return this.loadFunction(page)
+      .then((out) => {
+        done();
+        success();
+
+        this.data[this.page] = out;
+
+        return out;
+      })
+      .catch((err) => {
+        done();
+
+        return Promise.reject(err);
+      });
+  }
+}

js/src/common/utils/SuperTextarea.js

@@ -0,0 +1,109 @@
+/**
+ * A textarea wrapper with powerful helpers for text manipulation.
+ *
+ * This wraps a <textarea> DOM element and allows directly manipulating its text
+ * contents and cursor positions.
+ *
+ * I apologize for the pretentious name. :)
+ */
+export default class SuperTextarea {
+  /**
+   * @param {HTMLTextAreaElement} textarea
+   */
+  constructor(textarea) {
+    this.el = textarea;
+    this.$ = $(textarea);
+  }
+
+  /**
+   * Set the value of the text editor.
+   *
+   * @param {String} value
+   */
+  setValue(value) {
+    this.$.val(value).trigger('input');
+
+    this.el.dispatchEvent(new CustomEvent('input', { bubbles: true, cancelable: true }));
+  }
+
+  /**
+   * Focus the textarea and place the cursor at the given index.
+   *
+   * @param {number} position
+   */
+  moveCursorTo(position) {
+    this.setSelectionRange(position, position);
+  }
+
+  /**
+   * Get the selected range of the textarea.
+   *
+   * @return {Array}
+   */
+  getSelectionRange() {
+    return [this.el.selectionStart, this.el.selectionEnd];
+  }
+
+  /**
+   * Insert content into the textarea at the position of the cursor.
+   *
+   * @param {String} text
+   */
+  insertAtCursor(text) {
+    this.insertAt(this.el.selectionStart, text);
+  }
+
+  /**
+   * Insert content into the textarea at the given position.
+   *
+   * @param {number} pos
+   * @param {String} text
+   */
+  insertAt(pos, text) {
+    this.insertBetween(pos, pos, text);
+  }
+
+  /**
+   * Insert content into the textarea between the given positions.
+   *
+   * If the start and end positions are different, any text between them will be
+   * overwritten.
+   *
+   * @param start
+   * @param end
+   * @param text
+   */
+  insertBetween(start, end, text) {
+    const value = this.el.value;
+
+    const before = value.slice(0, start);
+    const after = value.slice(end);
+
+    this.setValue(`${before}${text}${after}`);
+
+    // Move the textarea cursor to the end of the content we just inserted.
+    this.moveCursorTo(start + text.length);
+  }
+
+  /**
+   * Replace existing content from the start to the current cursor position.
+   *
+   * @param start
+   * @param text
+   */
+  replaceBeforeCursor(start, text) {
+    this.insertBetween(start, this.el.selectionStart, text);
+  }
+
+  /**
+   * Set the selected range of the textarea.
+   *
+   * @param {number} start
+   * @param {number} end
+   * @private
+   */
+  setSelectionRange(start, end) {
+    this.el.setSelectionRange(start, end);
+    this.$.focus();
+  }
+}

js/src/common/utils/bidi.js

@@ -1,50 +0,0 @@
-function bidi(node, prop) {
-  var type = node.tag === 'select' ? (node.attrs.multi ? 'multi' : 'select') : node.attrs.type;
-
-  // Setup: bind listeners
-  if (type === 'multi') {
-    node.attrs.onchange = function () {
-      prop(
-        [].slice.call(this.selectedOptions, function (x) {
-          return x.value;
-        })
-      );
-    };
-  } else if (type === 'select') {
-    node.attrs.onchange = function (e) {
-      prop(this.selectedOptions[0].value);
-    };
-  } else if (type === 'checkbox') {
-    node.attrs.onchange = function (e) {
-      prop(this.checked);
-    };
-  } else {
-    node.attrs.onchange = node.attrs.oninput = function (e) {
-      prop(this.value);
-    };
-  }
-
-  if (node.tag === 'select') {
-    node.children.forEach(function (option) {
-      if (option.attrs.value === prop() || option.children[0] === prop()) {
-        option.attrs.selected = true;
-      }
-    });
-  } else if (type === 'checkbox') {
-    node.attrs.checked = prop();
-  } else if (type === 'radio') {
-    node.attrs.checked = prop() === node.attrs.value;
-  } else {
-    node.attrs.value = prop();
-  }
-
-  node.attrs.bidi = null;
-
-  return node;
-}
-
-bidi.view = function (ctrl, node, prop) {
-  return bidi(node, node.attrs.bidi);
-};
-
-export default bidi;

js/src/common/utils/classList.js

@@ -0,0 +1,26 @@
+/**
+ * The `classList` utility creates a list of class names by joining an object's
+ * keys, but only for values which are truthy.
+ *
+ * @example
+ * classList({ foo: true, bar: false, qux: 'qaz' });
+ * // "foo qux"
+ *
+ * @param {Object} classes
+ * @return {String}
+ */
+export default function classList(classes) {
+  let classNames;
+
+  if (classes instanceof Array) {
+    classNames = classes.filter((name) => name);
+  } else {
+    classNames = [];
+
+    for (const i in classes) {
+      if (classes[i]) classNames.push(i);
+    }
+  }
+
+  return classNames.join(' ');
+}

js/src/common/utils/classList.ts

@@ -1,12 +0,0 @@
-import clsx from 'clsx';
-
-/**
- * This util exposes `clsx` to core and extensions as a re-usable utility.
- *
- * For full documentation, see `clsx` on GitHub.
- *
- * @see https://github.com/lukeed/clsx
- */
-const classList = clsx;
-
-export default classList;

js/src/common/utils/patchMithril.js

@@ -1,5 +1,3 @@
-import bidi from './bidi';
-
 export default function patchMithril(global) {
   const defaultMithril = global.m;
 
@@ -10,7 +8,7 @@ export default function patchMithril(global) {
 
     // Allows the use of the bidi attr.
     if (node.attrs.bidi) {
-      bidi(node, node.attrs.bidi);
+      modifiedMithril.bidi(node, node.attrs.bidi);
     }
 
     return node;

js/src/forum/ForumApplication.js

@@ -16,7 +16,6 @@ import NotificationListState from './states/NotificationListState';
 import GlobalSearchState from './states/GlobalSearchState';
 import DiscussionListState from './states/DiscussionListState';
 import ComposerState from './states/ComposerState';
-import isSafariMobile from './utils/isSafariMobile';
 
 export default class ForumApplication extends Application {
   /**
@@ -139,12 +138,6 @@ export default class ForumApplication extends Application {
         m.redraw();
       }
     });
-
-    if (isSafariMobile()) {
-      $(() => {
-        $('.App').addClass('mobile-safari');
-      });
-    }
   }
 
   /**

js/src/forum/app.ts

@@ -1,8 +0,0 @@
-import Forum from './ForumApplication';
-
-const app = new Forum();
-
-// @ts-ignore
-window.app = app;
-
-export default app;

js/src/forum/compat.js

@@ -16,7 +16,6 @@ import PostStreamState from './states/PostStreamState';
 import SearchState from './states/SearchState';
 import AffixedSidebar from './components/AffixedSidebar';
 import DiscussionPage from './components/DiscussionPage';
-import DiscussionListPane from './components/DiscussionListPane';
 import LogInModal from './components/LogInModal';
 import ComposerBody from './components/ComposerBody';
 import ForgotPasswordModal from './components/ForgotPasswordModal';
@@ -36,6 +35,8 @@ import HeaderSecondary from './components/HeaderSecondary';
 import ComposerButton from './components/ComposerButton';
 import DiscussionList from './components/DiscussionList';
 import ReplyPlaceholder from './components/ReplyPlaceholder';
+import TextEditor from './components/TextEditor';
+import TextEditorButton from './components/TextEditorButton';
 import AvatarEditor from './components/AvatarEditor';
 import Post from './components/Post';
 import SettingsPage from './components/SettingsPage';
@@ -71,7 +72,6 @@ import DiscussionListItem from './components/DiscussionListItem';
 import LoadingPost from './components/LoadingPost';
 import PostsUserPage from './components/PostsUserPage';
 import DiscussionPageResolver from './resolvers/DiscussionPageResolver';
-import BasicEditorDriver from '../common/utils/BasicEditorDriver';
 import routes from './routes';
 import ForumApplication from './ForumApplication';
 
@@ -84,7 +84,6 @@ export default Object.assign(compat, {
   'utils/alertEmailConfirmation': alertEmailConfirmation,
   'utils/UserControls': UserControls,
   'utils/Pane': Pane,
-  'utils/BasicEditorDriver': BasicEditorDriver,
   'states/ComposerState': ComposerState,
   'states/DiscussionListState': DiscussionListState,
   'states/GlobalSearchState': GlobalSearchState,
@@ -93,7 +92,6 @@ export default Object.assign(compat, {
   'states/SearchState': SearchState,
   'components/AffixedSidebar': AffixedSidebar,
   'components/DiscussionPage': DiscussionPage,
-  'components/DiscussionListPane': DiscussionListPane,
   'components/LogInModal': LogInModal,
   'components/ComposerBody': ComposerBody,
   'components/ForgotPasswordModal': ForgotPasswordModal,
@@ -113,6 +111,8 @@ export default Object.assign(compat, {
   'components/ComposerButton': ComposerButton,
   'components/DiscussionList': DiscussionList,
   'components/ReplyPlaceholder': ReplyPlaceholder,
+  'components/TextEditor': TextEditor,
+  'components/TextEditorButton': TextEditorButton,
   'components/AvatarEditor': AvatarEditor,
   'components/Post': Post,
   'components/SettingsPage': SettingsPage,

js/src/forum/components/ChangeEmailModal.js

@@ -106,8 +106,9 @@ export default class ChangeEmailModal extends Modal {
       return;
     }
 
+    const oldEmail = app.session.user.email();
+
     this.loading = true;
-    this.alertAttrs = null;
 
     app.session.user
       .save(
@@ -119,6 +120,7 @@ export default class ChangeEmailModal extends Modal {
       )
       .then(() => {
         this.success = true;
+        this.alertAttrs = null;
       })
       .catch(() => {})
       .then(this.loaded.bind(this));

js/src/forum/components/Composer.js

@@ -76,13 +76,13 @@ export default class Composer extends Component {
 
     // Whenever any of the inputs inside the composer are have focus, we want to
     // add a class to the composer to draw attention to it.
-    this.$().on('focus blur', ':input,.TextEditor-editorContainer', (e) => {
+    this.$().on('focus blur', ':input', (e) => {
       this.active = e.type === 'focusin';
       m.redraw();
     });
 
     // When the escape key is pressed on any inputs, close the composer.
-    this.$().on('keydown', ':input,.TextEditor-editorContainer', 'esc', () => this.state.close());
+    this.$().on('keydown', ':input', 'esc', () => this.state.close());
 
     this.handlers = {};
 
@@ -157,7 +157,7 @@ export default class Composer extends Component {
    * Draw focus to the first focusable content element (the text editor).
    */
   focus() {
-    this.$('.Composer-content :input:enabled:visible, .TextEditor-editor').first().focus();
+    this.$('.Composer-content :input:enabled:visible:first').focus();
   }
 
   /**
@@ -265,17 +265,7 @@ export default class Composer extends Component {
     this.animateHeightChange().then(() => this.focus());
 
     if (app.screen() === 'phone') {
-      // On safari fixed position doesn't properly work on mobile,
-      // So we use absolute and set the top value.
-      // https://github.com/flarum/core/issues/2652
-
-      // Due to another safari bug, `scrollTop` is unreliable when
-      // at the very bottom of the page AND opening the composer.
-      // So we fallback to a calculated version of scrollTop.
-      // https://github.com/flarum/core/issues/2683
-      const scrollElement = document.documentElement;
-      const topOfViewport = Math.min(scrollElement.scrollTop, scrollElement.scrollHeight - scrollElement.clientHeight);
-      this.$().css('top', $('.App').is('.mobile-safari') ? topOfViewport : 0);
+      this.$().css('top', 0);
       this.showBackdrop();
     }
   }

js/src/forum/components/ComposerBody.js

@@ -1,7 +1,7 @@
 import Component from '../../common/Component';
 import LoadingIndicator from '../../common/components/LoadingIndicator';
 import ConfirmDocumentUnload from '../../common/components/ConfirmDocumentUnload';
-import TextEditor from '../../common/components/TextEditor';
+import TextEditor from './TextEditor';
 import avatar from '../../common/helpers/avatar';
 import listItems from '../../common/helpers/listItems';
 import ItemList from '../../common/utils/ItemList';

js/src/forum/components/DiscussionList.js

@@ -21,13 +21,7 @@ export default class DiscussionList extends Component {
     if (state.isLoading()) {
       loading = LoadingIndicator.component();
     } else if (state.moreResults) {
-      loading = Button.component(
-        {
-          className: 'Button',
-          onclick: state.loadMore.bind(state),
-        },
-        app.translator.trans('core.forum.discussion_list.load_more_button')
-      );
+      loading = this.getLoadButton('more', state.loadMore.bind(state));
     }
 
     if (state.empty()) {
@@ -35,8 +29,18 @@ export default class DiscussionList extends Component {
       return <div className="DiscussionList">{Placeholder.component({ text })}</div>;
     }
 
+    console.log(state);
+
     return (
       <div className={'DiscussionList' + (state.isSearchResults() ? ' DiscussionList--searchResults' : '')}>
+        {state.isLoadingPrev() ? (
+          <LoadingIndicator />
+        ) : state.pagination.pages.first !== 1 ? (
+          <div className="DiscussionList-loadMore">{this.getLoadButton('prev', state.loadPrev.bind(state))}</div>
+        ) : (
+          ''
+        )}
+
         <ul className="DiscussionList-discussions">
           {state.discussions.map((discussion) => {
             return (
@@ -46,8 +50,17 @@ export default class DiscussionList extends Component {
             );
           })}
         </ul>
+
         <div className="DiscussionList-loadMore">{loading}</div>
       </div>
     );
   }
+
+  getLoadButton(key, onclick) {
+    return (
+      <Button className="Button" onclick={onclick}>
+        {app.translator.trans(`core.forum.discussion_list.load_${key}_button`)}
+      </Button>
+    );
+  }
 }

js/src/forum/components/DiscussionListItem.js

@@ -87,7 +87,6 @@ export default class DiscussionListItem extends Component {
                 icon: 'fas fa-ellipsis-v',
                 className: 'DiscussionListItem-controls',
                 buttonClassName: 'Button Button--icon Button--flat Slidable-underneath Slidable-underneath--right',
-                accessibleToggleLabel: app.translator.trans('core.forum.discussion_controls.toggle_dropdown_accessible_label'),
               },
               controls
             )
@@ -122,8 +121,6 @@ export default class DiscussionListItem extends Component {
           </Link>
 
           <span
-            tabindex="0"
-            role="button"
             className="DiscussionListItem-count"
             onclick={this.markAsRead.bind(this)}
             title={showUnread ? app.translator.trans('core.forum.discussion_list.mark_as_read_tooltip') : ''}

js/src/forum/components/DiscussionListPane.js

@@ -1,6 +1,5 @@
 import DiscussionList from './DiscussionList';
 import Component from '../../common/Component';
-import DiscussionPage from './DiscussionPage';
 
 const hotEdge = (e) => {
   if (e.pageX < 10) app.pane.show();
@@ -37,31 +36,23 @@ export default class DiscussionListPane extends Component {
 
     $(document).on('mousemove', hotEdge);
 
-    // When coming from another discussion, scroll to the previous postition
-    // to prevent the discussion list jumping around.
-    if (app.previous.matches(DiscussionPage)) {
-      const top = app.cache.discussionListPaneScrollTop || 0;
-      $list.scrollTop(top);
-    } else {
-      // If the discussion we are viewing is listed in the discussion list, then
-      // we will make sure it is visible in the viewport – if it is not we will
-      // scroll the list down to it.
-      const $discussion = $list.find('.DiscussionListItem.active');
-      if ($discussion.length) {
-        const listTop = $list.offset().top;
-        const listBottom = listTop + $list.outerHeight();
-        const discussionTop = $discussion.offset().top;
-        const discussionBottom = discussionTop + $discussion.outerHeight();
+    // If the discussion we are viewing is listed in the discussion list, then
+    // we will make sure it is visible in the viewport – if it is not we will
+    // scroll the list down to it.
+    const $discussion = $list.find('.DiscussionListItem.active');
+    if ($discussion.length) {
+      const listTop = $list.offset().top;
+      const listBottom = listTop + $list.outerHeight();
+      const discussionTop = $discussion.offset().top;
+      const discussionBottom = discussionTop + $discussion.outerHeight();
 
-        if (discussionTop < listTop || discussionBottom > listBottom) {
-          $list.scrollTop($list.scrollTop() - listTop + discussionTop);
-        }
+      if (discussionTop < listTop || discussionBottom > listBottom) {
+        $list.scrollTop($list.scrollTop() - listTop + discussionTop);
       }
     }
   }
 
-  onremove(vnode) {
-    app.cache.discussionListPaneScrollTop = $(vnode.dom).scrollTop();
+  onremove() {
     $(document).off('mousemove', hotEdge);
   }
 

js/src/forum/components/DiscussionPage.js

@@ -189,7 +189,6 @@ export default class DiscussionPage extends Page {
           icon: 'fas fa-ellipsis-v',
           className: 'App-primaryControl',
           buttonClassName: 'Button--primary',
-          accessibleToggleLabel: app.translator.trans('core.forum.discussion_controls.toggle_dropdown_accessible_label'),
         },
         DiscussionControls.controls(this.discussion, this).toArray()
       )

js/src/forum/components/EditUserModal.js

@@ -37,10 +37,9 @@ export default class EditUserModal extends Modal {
   }
 
   content() {
-    const fields = this.fields().toArray();
     return (
       <div className="Modal-body">
-        {fields.length > 1 ? <div className="Form">{this.fields().toArray()}</div> : app.translator.trans('core.forum.edit_user.nothing_available')}
+        <div className="Form">{this.fields().toArray()}</div>
       </div>
     );
   }
@@ -48,112 +47,96 @@ export default class EditUserModal extends Modal {
   fields() {
     const items = new ItemList();
 
-    if (app.session.user.canEditCredentials()) {
+    items.add(
+      'username',
+      <div className="Form-group">
+        <label>{app.translator.trans('core.forum.edit_user.username_heading')}</label>
+        <input className="FormControl" placeholder={extractText(app.translator.trans('core.forum.edit_user.username_label'))} bidi={this.username} />
+      </div>,
+      40
+    );
+
+    if (app.session.user !== this.attrs.user) {
       items.add(
-        'username',
+        'email',
         <div className="Form-group">
-          <label>{app.translator.trans('core.forum.edit_user.username_heading')}</label>
-          <input
-            className="FormControl"
-            placeholder={extractText(app.translator.trans('core.forum.edit_user.username_label'))}
-            bidi={this.username}
-            disabled={this.nonAdminEditingAdmin()}
-          />
+          <label>{app.translator.trans('core.forum.edit_user.email_heading')}</label>
+          <div>
+            <input className="FormControl" placeholder={extractText(app.translator.trans('core.forum.edit_user.email_label'))} bidi={this.email} />
+          </div>
+          {!this.isEmailConfirmed() ? (
+            <div>
+              {Button.component(
+                {
+                  className: 'Button Button--block',
+                  loading: this.loading,
+                  onclick: this.activate.bind(this),
+                },
+                app.translator.trans('core.forum.edit_user.activate_button')
+              )}
+            </div>
+          ) : (
+            ''
+          )}
         </div>,
-        40
+        30
       );
 
-      if (app.session.user !== this.attrs.user) {
-        items.add(
-          'email',
-          <div className="Form-group">
-            <label>{app.translator.trans('core.forum.edit_user.email_heading')}</label>
-            <div>
+      items.add(
+        'password',
+        <div className="Form-group">
+          <label>{app.translator.trans('core.forum.edit_user.password_heading')}</label>
+          <div>
+            <label className="checkbox">
+              <input
+                type="checkbox"
+                onchange={(e) => {
+                  this.setPassword(e.target.checked);
+                  m.redraw.sync();
+                  if (e.target.checked) this.$('[name=password]').select();
+                  e.redraw = false;
+                }}
+              />
+              {app.translator.trans('core.forum.edit_user.set_password_label')}
+            </label>
+            {this.setPassword() ? (
               <input
                 className="FormControl"
-                placeholder={extractText(app.translator.trans('core.forum.edit_user.email_label'))}
-                bidi={this.email}
-                disabled={this.nonAdminEditingAdmin()}
+                type="password"
+                name="password"
+                placeholder={extractText(app.translator.trans('core.forum.edit_user.password_label'))}
+                bidi={this.password}
               />
-            </div>
-            {!this.isEmailConfirmed() && this.userIsAdmin(app.session.user) ? (
-              <div>
-                {Button.component(
-                  {
-                    className: 'Button Button--block',
-                    loading: this.loading,
-                    onclick: this.activate.bind(this),
-                  },
-                  app.translator.trans('core.forum.edit_user.activate_button')
-                )}
-              </div>
             ) : (
               ''
             )}
-          </div>,
-          30
-        );
+          </div>
+        </div>,
+        20
+      );
+    }
 
-        items.add(
-          'password',
-          <div className="Form-group">
-            <label>{app.translator.trans('core.forum.edit_user.password_heading')}</label>
-            <div>
+    items.add(
+      'groups',
+      <div className="Form-group EditUserModal-groups">
+        <label>{app.translator.trans('core.forum.edit_user.groups_heading')}</label>
+        <div>
+          {Object.keys(this.groups)
+            .map((id) => app.store.getById('groups', id))
+            .map((group) => (
               <label className="checkbox">
                 <input
                   type="checkbox"
-                  onchange={(e) => {
-                    this.setPassword(e.target.checked);
-                    m.redraw.sync();
-                    if (e.target.checked) this.$('[name=password]').select();
-                    e.redraw = false;
-                  }}
-                  disabled={this.nonAdminEditingAdmin()}
+                  bidi={this.groups[group.id()]}
+                  disabled={this.attrs.user.id() === '1' && group.id() === Group.ADMINISTRATOR_ID}
                 />
-                {app.translator.trans('core.forum.edit_user.set_password_label')}
+                {GroupBadge.component({ group, label: '' })} {group.nameSingular()}
               </label>
-              {this.setPassword() ? (
-                <input
-                  className="FormControl"
-                  type="password"
-                  name="password"
-                  placeholder={extractText(app.translator.trans('core.forum.edit_user.password_label'))}
-                  bidi={this.password}
-                  disabled={this.nonAdminEditingAdmin()}
-                />
-              ) : (
-                ''
-              )}
-            </div>
-          </div>,
-          20
-        );
-      }
-    }
-
-    if (app.session.user.canEditGroups()) {
-      items.add(
-        'groups',
-        <div className="Form-group EditUserModal-groups">
-          <label>{app.translator.trans('core.forum.edit_user.groups_heading')}</label>
-          <div>
-            {Object.keys(this.groups)
-              .map((id) => app.store.getById('groups', id))
-              .map((group) => (
-                <label className="checkbox">
-                  <input
-                    type="checkbox"
-                    bidi={this.groups[group.id()]}
-                    disabled={group.id() === Group.ADMINISTRATOR_ID && (this.attrs.user === app.session.user || !this.userIsAdmin(app.session.user))}
-                  />
-                  {GroupBadge.component({ group, label: '' })} {group.nameSingular()}
-                </label>
-              ))}
-          </div>
-        </div>,
-        10
-      );
-    }
+            ))}
+        </div>
+      </div>,
+      10
+    );
 
     items.add(
       'submit',
@@ -193,26 +176,21 @@ export default class EditUserModal extends Modal {
   }
 
   data() {
+    const groups = Object.keys(this.groups)
+      .filter((id) => this.groups[id]())
+      .map((id) => app.store.getById('groups', id));
+
     const data = {
-      relationships: {},
+      username: this.username(),
+      relationships: { groups },
     };
 
-    if (this.attrs.user.canEditCredentials() && !this.nonAdminEditingAdmin()) {
-      data.username = this.username();
-
-      if (app.session.user !== this.attrs.user) {
-        data.email = this.email();
-      }
-
-      if (this.setPassword()) {
-        data.password = this.password();
-      }
+    if (app.session.user !== this.attrs.user) {
+      data.email = this.email();
     }
 
-    if (this.attrs.user.canEditGroups()) {
-      data.relationships.groups = Object.keys(this.groups)
-        .filter((id) => this.groups[id]())
-        .map((id) => app.store.getById('groups', id));
+    if (this.setPassword()) {
+      data.password = this.password();
     }
 
     return data;
@@ -231,16 +209,4 @@ export default class EditUserModal extends Modal {
         m.redraw();
       });
   }
-
-  nonAdminEditingAdmin() {
-    return this.userIsAdmin(this.attrs.user) && !this.userIsAdmin(app.session.user);
-  }
-
-  /**
-   * @internal
-   * @protected
-   */
-  userIsAdmin(user) {
-    return user.groups().some((g) => g.id() === Group.ADMINISTRATOR_ID);
-  }
 }

js/src/forum/components/HeaderSecondary.js

@@ -57,7 +57,6 @@ export default class HeaderSecondary extends Component {
         SelectDropdown.component(
           {
             buttonClassName: 'Button Button--link',
-            accessibleToggleLabel: app.translator.trans('core.forum.header.locale_dropdown_accessible_label'),
           },
           locales
         ),

js/src/forum/components/IndexPage.js

@@ -172,7 +172,6 @@ export default class IndexPage extends Page {
         {
           buttonClassName: 'Button',
           className: 'App-titleControl',
-          accessibleToggleLabel: app.translator.trans('core.forum.index.toggle_sidenav_dropdown_accessible_label'),
         },
         this.navItems(this).toArray()
       )
@@ -228,7 +227,6 @@ export default class IndexPage extends Page {
         {
           buttonClassName: 'Button',
           label: sortOptions[app.search.params().sort] || Object.keys(sortMap).map((key) => sortOptions[key])[0],
-          accessibleToggleLabel: app.translator.trans('core.forum.index_sort.toggle_dropdown_accessible_label'),
         },
         Object.keys(sortOptions).map((value) => {
           const label = sortOptions[value];

js/src/forum/components/NotificationList.js

@@ -99,9 +99,7 @@ export default class NotificationList extends Component {
     super.oncreate(vnode);
 
     this.$notifications = this.$('.NotificationList-content');
-
-    // If we are on the notifications page, the window will be scrolling and not the $notifications element.
-    this.$scrollParent = this.inPanel() ? this.$notifications : $(window);
+    this.$scrollParent = this.$notifications.css('overflow') === 'auto' ? this.$notifications : $(window);
 
     this.boundScrollHandler = this.scrollHandler.bind(this);
     this.$scrollParent.on('scroll', this.boundScrollHandler);
@@ -114,24 +112,14 @@ export default class NotificationList extends Component {
   scrollHandler() {
     const state = this.attrs.state;
 
-    // Whole-page scroll events are listened to on `window`, but we need to get the actual
-    // scrollHeight, scrollTop, and clientHeight from the document element.
-    const scrollParent = this.inPanel() ? this.$scrollParent[0] : document.documentElement;
+    const scrollTop = this.$scrollParent.scrollTop();
+    const viewportHeight = this.$scrollParent.height();
 
-    // On very short screens, the scrollHeight + scrollTop might not reach the clientHeight
-    // by a fraction of a pixel, so we compensate for that.
-    const atBottom = Math.abs(scrollParent.scrollHeight - scrollParent.scrollTop - scrollParent.clientHeight) <= 1;
+    const contentTop = this.$scrollParent === this.$notifications ? 0 : this.$notifications.offset().top;
+    const contentHeight = this.$notifications[0].scrollHeight;
 
-    if (state.hasMoreResults() && !state.isLoading() && atBottom) {
+    if (state.hasMoreResults() && !state.isLoading() && scrollTop + viewportHeight >= contentTop + contentHeight) {
       state.loadMore();
     }
   }
-
-  /**
-   * If the NotificationList component isn't in a panel (e.g. on NotificationPage when mobile),
-   * we need to listen to scroll events on the window, and get scroll state from the body.
-   */
-  inPanel() {
-    return this.$notifications.css('overflow') === 'auto';
-  }
 }

js/src/forum/components/NotificationsDropdown.js

@@ -9,8 +9,6 @@ export default class NotificationsDropdown extends Dropdown {
     attrs.menuClassName = attrs.menuClassName || 'Dropdown-menu--right';
     attrs.label = attrs.label || app.translator.trans('core.forum.notifications.tooltip');
     attrs.icon = attrs.icon || 'fas fa-bell';
-    // For best a11y support, both `title` and `aria-label` should be used
-    attrs.accessibleToggleLabel = attrs.accessibleToggleLabel || app.translator.trans('core.forum.notifications.toggle_dropdown_accessible_label');
 
     super.initAttrs(attrs);
   }

js/src/forum/components/Post.js

@@ -61,7 +61,6 @@ export default class Post extends Component {
                     icon="fas fa-ellipsis-h"
                     onshow={() => this.$('.Post-actions').addClass('open')}
                     onhide={() => this.$('.Post-actions').removeClass('open')}
-                    accessibleToggleLabel={app.translator.trans('core.forum.post_controls.toggle_dropdown_accessible_label')}
                   >
                     {controls}
                   </Dropdown>

js/src/forum/components/PostStream.js

@@ -142,29 +142,18 @@ export default class PostStream extends Component {
   }
 
   /**
+   * When the window is scrolled, check if either extreme of the post stream is
+   * in the viewport, and if so, trigger loading the next/previous page.
    *
    * @param {Integer} top
    */
   onscroll(top = window.pageYOffset) {
-    if (this.stream.paused || this.stream.pagesLoading) return;
+    if (this.stream.paused) return;
 
     this.updateScrubber(top);
 
-    this.loadPostsIfNeeded(top);
+    if (this.stream.pagesLoading) return;
 
-    // Throttle calculation of our position (start/end numbers of posts in the
-    // viewport) to 100ms.
-    clearTimeout(this.calculatePositionTimeout);
-    this.calculatePositionTimeout = setTimeout(this.calculatePosition.bind(this, top), 100);
-  }
-
-  /**
-   * Check if either extreme of the post stream is in the viewport,
-   * and if so, trigger loading the next/previous page.
-   *
-   * @param {Integer} top
-   */
-  loadPostsIfNeeded(top = window.pageYOffset) {
     const marginTop = this.getMarginTop();
     const viewportHeight = $(window).height() - marginTop;
     const viewportTop = top + marginTop;
@@ -185,6 +174,11 @@ export default class PostStream extends Component {
         this.stream.loadNext();
       }
     }
+
+    // Throttle calculation of our position (start/end numbers of posts in the
+    // viewport) to 100ms.
+    clearTimeout(this.calculatePositionTimeout);
+    this.calculatePositionTimeout = setTimeout(this.calculatePosition.bind(this, top), 100);
   }
 
   updateScrubber(top = window.pageYOffset) {
@@ -405,8 +399,6 @@ export default class PostStream extends Component {
 
       this.calculatePosition();
       this.stream.paused = false;
-      // Check if we need to load more posts after scrolling.
-      this.loadPostsIfNeeded();
     });
   }
 

js/src/forum/components/PostStreamScrubber.js

@@ -112,6 +112,7 @@ export default class PostStreamScrubber extends Component {
 
       // Now we want to make the scrollbar handle draggable. Let's start by
       // preventing default browser events from messing things up.
+      .css({ cursor: 'pointer', 'user-select': 'none' })
       .bind('dragstart mousedown touchstart', (e) => e.preventDefault());
 
     // When the mouse is pressed on the scrollbar handle, we capture some
@@ -123,6 +124,7 @@ export default class PostStreamScrubber extends Component {
     this.indexStart = 0;
 
     this.$('.Scrubber-handle')
+      .css('cursor', 'move')
       .bind('mousedown touchstart', this.onmousedown.bind(this))
 
       // Exempt the scrollbar handle from the 'jump to' click event.

js/src/forum/components/PostsUserPage.js

@@ -121,7 +121,7 @@ export default class PostsUserPage extends UserPage {
   loadResults(offset) {
     return app.store.find('posts', {
       filter: {
-        author: this.user.username(),
+        user: this.user.id(),
         type: 'comment',
       },
       page: { offset, limit: this.loadLimit },

js/src/forum/components/RenameDiscussionModal.js

@@ -49,7 +49,7 @@ export default class RenameDiscussionModal extends Modal {
 
     this.loading = true;
 
-    const title = this.newTitle();
+    const title = this.newTitle;
     const currentTitle = this.currentTitle;
 
     // If the title is different to what it was before, then save it. After the

js/src/forum/components/ReplyPlaceholder.js

@@ -5,7 +5,6 @@ import avatar from '../../common/helpers/avatar';
 import username from '../../common/helpers/username';
 import DiscussionControls from '../utils/DiscussionControls';
 import ComposerPostPreview from './ComposerPostPreview';
-import listItems from '../../common/helpers/listItems';
 
 /**
  * The `ReplyPlaceholder` component displays a placeholder for a reply, which,
@@ -26,7 +25,6 @@ export default class ReplyPlaceholder extends Component {
                 {avatar(app.session.user, { className: 'PostUser-avatar' })}
                 {username(app.session.user)}
               </h3>
-              <ul className="PostUser-badges badges">{listItems(app.session.user.badges().toArray())}</ul>
             </div>
           </header>
           <ComposerPostPreview className="Post-body" composer={app.composer} surround={this.anchorPreview.bind(this)} />

js/src/forum/components/Search.js

@@ -71,11 +71,8 @@ export default class Search extends Component {
     // Hide the search view if no sources were loaded
     if (!this.sources.length) return <div></div>;
 
-    const searchLabel = extractText(app.translator.trans('core.forum.header.search_placeholder'));
-
     return (
       <div
-        role="search"
         className={
           'Search ' +
           classList({
@@ -88,10 +85,9 @@ export default class Search extends Component {
       >
         <div className="Search-input">
           <input
-            aria-label={searchLabel}
             className="FormControl"
             type="search"
-            placeholder={searchLabel}
+            placeholder={extractText(app.translator.trans('core.forum.header.search_placeholder'))}
             value={this.state.getValue()}
             oninput={(e) => this.state.setValue(e.target.value)}
             onfocus={() => (this.hasFocus = true)}
@@ -117,16 +113,6 @@ export default class Search extends Component {
   onupdate() {
     // Highlight the item that is currently selected.
     this.setIndex(this.getCurrentNumericIndex());
-
-    // If there are no sources, the search view is not shown.
-    if (!this.sources.length) return;
-
-    // Since extensions might add elements above the search box on mobile,
-    // we need to calculate and set the max height dynamically.
-    const resultsElementMargin = 14;
-    const maxHeight =
-      window.innerHeight - this.element.querySelector('.Search-input>.FormControl').getBoundingClientRect().bottom - resultsElementMargin;
-    this.element.querySelector('.Search-results').style['max-height'] = `${maxHeight}px`;
   }
 
   oncreate(vnode) {

js/src/forum/components/SessionDropdown.js

@@ -17,8 +17,6 @@ export default class SessionDropdown extends Dropdown {
     attrs.className = 'SessionDropdown';
     attrs.buttonClassName = 'Button Button--user Button--flat';
     attrs.menuClassName = 'Dropdown-menu--right';
-
-    attrs.accessibleToggleLabel = app.translator.trans('core.forum.header.session_dropdown_accessible_label');
   }
 
   view(vnode) {

js/src/forum/components/TextEditor.js

@@ -1,9 +1,8 @@
-import Component from '../Component';
-import ItemList from '../utils/ItemList';
-import listItems from '../helpers/listItems';
-import Button from './Button';
-
-import BasicEditorDriver from '../utils/BasicEditorDriver';
+import Component from '../../common/Component';
+import ItemList from '../../common/utils/ItemList';
+import SuperTextarea from '../../common/utils/SuperTextarea';
+import listItems from '../../common/helpers/listItems';
+import Button from '../../common/components/Button';
 
 /**
  * The `TextEditor` component displays a textarea with controls, including a
@@ -23,22 +22,25 @@ export default class TextEditor extends Component {
     super.oninit(vnode);
 
     /**
-     * The value of the editor.
+     * The value of the textarea.
      *
      * @type {String}
      */
     this.value = this.attrs.value || '';
-
-    /**
-     * Whether the editor is disabled.
-     */
-    this.disabled = !!this.attrs.disabled;
   }
 
   view() {
     return (
       <div className="TextEditor">
-        <div className="TextEditor-editorContainer"></div>
+        <textarea
+          className="FormControl Composer-flexible"
+          oninput={(e) => {
+            this.oninput(e.target.value, e);
+          }}
+          placeholder={this.attrs.placeholder || ''}
+          disabled={!!this.attrs.disabled}
+          value={this.value}
+        />
 
         <ul className="TextEditor-controls Composer-footer">
           {listItems(this.controlItems().toArray())}
@@ -51,35 +53,15 @@ export default class TextEditor extends Component {
   oncreate(vnode) {
     super.oncreate(vnode);
 
-    this.attrs.composer.editor = this.buildEditor(this.$('.TextEditor-editorContainer')[0]);
-  }
-
-  onupdate() {
-    const newDisabled = !!this.attrs.disabled;
-
-    if (this.disabled !== newDisabled) {
-      this.disabled = newDisabled;
-      this.attrs.composer.editor.disabled(newDisabled);
-    }
-  }
-
-  buildEditorParams() {
-    return {
-      classNames: ['FormControl', 'Composer-flexible', 'TextEditor-editor'],
-      disabled: this.disabled,
-      placeholder: this.attrs.placeholder || '',
-      value: this.value,
-      oninput: this.oninput.bind(this),
-      inputListeners: [],
-      onsubmit: () => {
-        this.onsubmit();
-        m.redraw();
-      },
+    const handler = () => {
+      this.onsubmit();
+      m.redraw();
     };
-  }
 
-  buildEditor(dom) {
-    return new BasicEditorDriver(dom, this.buildEditorParams());
+    this.$('textarea').bind('keydown', 'meta+return', handler);
+    this.$('textarea').bind('keydown', 'ctrl+return', handler);
+
+    this.attrs.composer.editor = new SuperTextarea(this.$('textarea')[0]);
   }
 
   /**
@@ -133,10 +115,12 @@ export default class TextEditor extends Component {
    *
    * @param {String} value
    */
-  oninput(value) {
+  oninput(value, e) {
     this.value = value;
 
     this.attrs.onchange(this.value);
+
+    e.redraw = false;
   }
 
   /**

js/src/forum/components/TextEditorButton.js

@@ -1,4 +1,4 @@
-import Button from './Button';
+import Button from '../../common/components/Button';
 
 /**
  * The `TextEditorButton` component displays a button suitable for the text

js/src/forum/components/UserCard.js

@@ -40,7 +40,6 @@ export default class UserCard extends Component {
                     menuClassName: 'Dropdown-menu--right',
                     buttonClassName: this.attrs.controlsButtonClassName,
                     label: app.translator.trans('core.forum.user_controls.button'),
-                    accessibleToggleLabel: app.translator.trans('core.forum.user_controls.toggle_dropdown_accessible_label'),
                     icon: 'fas fa-ellipsis-v',
                   },
                   controls

js/src/forum/index.js

@@ -1,8 +1,12 @@
-// Expose punycode and ColorThief to the window browser object
-import 'expose-loader?exposes=punycode!punycode';
-import 'expose-loader?exposes=ColorThief!color-thief-browser';
+import 'expose-loader?punycode!punycode';
+import 'expose-loader?ColorThief!color-thief-browser';
 
-import app from './app';
+import ForumApplication from './ForumApplication';
+
+const app = new ForumApplication();
+
+// Backwards compatibility
+window.app = app;
 
 export { app };
 

js/src/forum/states/ComposerState.js

@@ -1,7 +1,6 @@
 import subclassOf from '../../common/utils/subclassOf';
 import Stream from '../../common/utils/Stream';
 import ReplyComposer from '../components/ReplyComposer';
-import EditorDriverInterface from '../../common/utils/EditorDriverInterface';
 
 class ComposerState {
   constructor() {
@@ -30,7 +29,7 @@ class ComposerState {
     /**
      * A reference to the text editor that allows text manipulation.
      *
-     * @type {EditorDriverInterface|null}
+     * @type {SuperTextArea|null}
      */
     this.editor = null;
 
@@ -67,16 +66,12 @@ class ComposerState {
   clear() {
     this.position = ComposerState.Position.HIDDEN;
     this.body = { attrs: {} };
+    this.editor = null;
     this.onExit = null;
 
     this.fields = {
       content: Stream(''),
     };
-
-    if (this.editor) {
-      this.editor.destroy();
-    }
-    this.editor = null;
   }
 
   /**

js/src/forum/states/DiscussionListState.js

@@ -1,4 +1,8 @@
+import Pagination from '../../common/utils/Pagination';
+
 export default class DiscussionListState {
+  static DISCUSSIONS_PER_PAGE = 20;
+
   constructor(params = {}, app = window.app) {
     this.params = params;
 
@@ -8,7 +12,7 @@ export default class DiscussionListState {
 
     this.moreResults = false;
 
-    this.loading = false;
+    this.pagination = new Pagination(this.load.bind(this));
   }
 
   /**
@@ -82,33 +86,16 @@ export default class DiscussionListState {
    * This can be used to refresh discussions without loading animations.
    */
   refresh({ deferClear = false } = {}) {
-    this.loading = true;
+    this.pagination.loading.next = true;
 
     if (!deferClear) {
       this.clear();
     }
 
-    return this.loadResults().then(
-      (results) => {
-        // This ensures that any changes made while waiting on this request
-        // are ignored. Otherwise, we could get duplicate discussions.
-        // We don't use `this.clear()` to avoid an unnecessary redraw.
-        this.discussions = [];
-        this.parseResults(results);
-      },
-      () => {
-        this.loading = false;
-        m.redraw();
-      }
-    );
+    return this.pagination.refresh(Number(m.route.param('page')) || 1).then(this.parse.bind(this));
   }
 
-  /**
-   * Load a new page of discussion results.
-   *
-   * @param offset The index to start the page at.
-   */
-  loadResults(offset) {
+  load(page) {
     const preloadedDiscussions = this.app.preloadedApiDocument();
 
     if (preloadedDiscussions) {
@@ -116,44 +103,54 @@ export default class DiscussionListState {
     }
 
     const params = this.requestParams();
-    params.page = { offset };
+    params.page = { offset: DiscussionListState.DISCUSSIONS_PER_PAGE * (page - 1) };
     params.include = params.include.join(',');
 
     return this.app.store.find('discussions', params);
   }
 
-  /**
-   * Load the next page of discussion results.
-   */
-  loadMore() {
-    this.loading = true;
+  loadPrev() {
+    return this.pagination.loadPrev().then(this.parse.bind(this));
+  }
 
-    this.loadResults(this.discussions.length).then(this.parseResults.bind(this));
+  loadMore() {
+    return this.pagination.loadNext().then(this.parse.bind(this));
   }
 
   /**
    * Parse results and append them to the discussion list.
    */
-  parseResults(results) {
-    this.discussions.push(...results);
+  parse() {
+    const discussions = [];
+    const { first, last } = this.pagination.pages;
 
-    this.loading = false;
-    this.moreResults = !!results.payload.links && !!results.payload.links.next;
+    for (let page = first; page <= last; page++) {
+      const results = this.pagination.data[page];
+
+      if (Array.isArray(results)) discussions.push(...results);
+    }
+
+    this.discussions = discussions;
+
+    const results = this.pagination.data[last];
+    this.moreResults = !!results.payload.links.next;
 
     m.redraw();
 
-    return results;
+    return discussions;
   }
 
   /**
    * Remove a discussion from the list if it is present.
    */
   removeDiscussion(discussion) {
-    const index = this.discussions.indexOf(discussion);
+    Object.keys(this.pagination.data).forEach((key) => {
+      const index = this.pagination.data[key].indexOf(discussion);
 
-    if (index !== -1) {
-      this.discussions.splice(index, 1);
-    }
+      this.pagination.data[key].splice(index, 1);
+    });
+
+    this.parse();
 
     m.redraw();
   }
@@ -177,7 +174,11 @@ export default class DiscussionListState {
    * Are discussions currently being loaded?
    */
   isLoading() {
-    return this.loading;
+    return this.pagination.loading.next;
+  }
+
+  isLoadingPrev() {
+    return this.pagination.loading.prev;
   }
 
   /**

js/src/forum/states/PostStreamState.js

@@ -1,4 +1,3 @@
-import { throttle } from 'lodash-es';
 import anchorScroll from '../../common/utils/anchorScroll';
 
 class PostStreamState {
@@ -50,9 +49,6 @@ class PostStreamState {
      */
     this.forceUpdateScrubber = false;
 
-    this.loadNext = throttle(this._loadNext, 300);
-    this.loadPrevious = throttle(this._loadPrevious, 300);
-
     this.show(includedPosts);
   }
 
@@ -191,7 +187,7 @@ class PostStreamState {
   /**
    * Load the next page of posts.
    */
-  _loadNext() {
+  loadNext() {
     const start = this.visibleEnd;
     const end = (this.visibleEnd = this.sanitizeIndex(this.visibleEnd + this.constructor.loadCount));
 
@@ -214,7 +210,7 @@ class PostStreamState {
   /**
    * Load the previous page of posts.
    */
-  _loadPrevious() {
+  loadPrevious() {
     const end = this.visibleStart;
     const start = (this.visibleStart = this.sanitizeIndex(this.visibleStart - this.constructor.loadCount));
 

js/src/forum/utils/UserControls.js

@@ -57,7 +57,7 @@ export default {
   moderationControls(user) {
     const items = new ItemList();
 
-    if (user.canEdit() || user.canEditCredentials() || user.canEditGroups()) {
+    if (user.canEdit()) {
       items.add(
         'edit',
         <Button icon="fas fa-pencil-alt" onclick={this.editAction.bind(this, user)}>

js/src/forum/utils/isSafariMobile.ts

@@ -1,13 +0,0 @@
-/**
- * @see https://stackoverflow.com/a/31732310
- */
-export default function isSafariMobile(): boolean {
-  return (
-    'ontouchstart' in window &&
-    navigator.vendor &&
-    navigator.vendor.includes('Apple') &&
-    navigator.userAgent &&
-    !navigator.userAgent.includes('CriOS') &&
-    !navigator.userAgent.includes('FxiOS')
-  );
-}

js/webpack.config.js

@@ -1,32 +1,15 @@
 const config = require('flarum-webpack-config');
-const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
 const merge = require('webpack-merge');
-const TerserPlugin = require("terser-webpack-plugin");
-
-const useBundleAnalyzer = process.env.ANALYZER === 'true';
-
-const plugins = [];
-
-if (useBundleAnalyzer) {
-  plugins.push(new BundleAnalyzerPlugin());
-}
 
 module.exports = merge(config(), {
   output: {
-    library: 'flarum.core',
+    library: 'flarum.core'
   },
 
   // temporary TS configuration
   resolve: {
     extensions: ['.ts', '.tsx', '.js', '.json'],
   },
-
-  plugins,
-  optimization: {
-    minimizer: [new TerserPlugin({
-      extractComments: false,
-    })],
-  },
 });
 
 module.exports['module'].rules[0].test = /\.(tsx?|js)$/;

less/admin/AdminNav.less

@@ -206,7 +206,7 @@
 .ExtensionNavButton {
   .Button-label {
     display: inline-block;
-    max-width: ~"calc(100% - 18px)";
+    max-width: calc(100% - 18px);
     overflow: hidden;
     text-overflow: ellipsis;
     vertical-align: middle;
@@ -218,6 +218,5 @@
   background-color: #2ECC40;
 }
 .ExtensionListItem-Dot.disabled {
-  border: 2px solid #FF4136;
-  box-sizing: border-box;
+  background-color: #FF4136;
 }

less/admin/AppearancePage.less

@@ -1,5 +1,4 @@
 .AppearancePage {
-  padding-bottom: 30px;
 
   @media @desktop-up {
     .container {
@@ -15,16 +14,8 @@
 .AppearancePage-colors-input {
   overflow: hidden;
 
-  .Form-group {
-    display: inline-block;
-  }
-
-  .Form-group:last-child {
-    margin-bottom: 24px !important;
-    margin-left: 10px;
-  }
-
   input {
+    width: 49%;
     float: left;
 
     &:first-child {
@@ -32,7 +23,7 @@
     }
   }
 }
-
+.AppearancePage-colors-input,
 .AppearancePage-colors .Checkbox {
   margin-bottom: 15px;
 }

less/admin/BasicsPage.less

@@ -1,5 +1,4 @@
 .BasicsPage {
-  padding-bottom: 30px;
 
   @media @desktop-up {
     .container {
@@ -8,27 +7,26 @@
     }
   }
 
-  .Form-group {
+  fieldset {
     margin-bottom: 20px;
-  }
 
-  ul {
-    list-style: none;
-    margin: 0;
-    padding: 0;
+    > ul {
+      list-style: none;
+      margin: 0;
+      padding: 0;
+    }
   }
 }
 
 .BasicsPage-welcomeBanner-input {
-  input {
+  :first-child {
     margin-bottom: 1px;
     border-bottom-right-radius: 0;
     border-bottom-left-radius: 0;
     font-weight: bold;
   }
-  textarea {
+  :last-child {
     border-top-right-radius: 0;
     border-top-left-radius: 0;
-    margin-bottom: 10px;
   }
 }

less/admin/DashboardPage.less

@@ -2,7 +2,6 @@
   background: @body-bg;
   color: @control-color;
   min-height: 100vh;
-  padding-bottom: 30px;
 }
 
 .Widget {

less/admin/ExtensionPage.less

@@ -1,4 +1,5 @@
 .ExtensionPage {
+  min-height: 110vh;
 
   .ExtensionPage-header {
     .ExtensionTitle {
@@ -141,13 +142,11 @@
 
   .ExtensionPage-permissions {
 
-    .PermissionGrid-removeScope {
-      display: none;
-    }
-
-    > .container {
-      overflow-x: auto;
-      padding-bottom: 25vh;
+    @media @phone {
+      > .container {
+        overflow-x: scroll;
+        padding-bottom: 20px;
+      }
     }
 
     .ExtensionPage-permissions-header {

less/admin/ExtensionWidget.less

@@ -7,6 +7,18 @@
   padding: 0;
   background-color: @body-bg;
 
+  .ExtensionList-Category {
+    background: @control-bg;
+    padding: 20px 0 20px 20px;
+    margin-bottom: 20px;
+    border-radius: @border-radius;
+
+    .ExtensionList-Label {
+      margin-top: 0;
+      color: @muted-color;
+    }
+  }
+
   .ExtensionGroup {
     margin-bottom: 20px;
 
@@ -34,18 +46,6 @@
   }
 }
 
-.ExtensionList-Category {
-  background: @control-bg;
-  padding: 20px 0 20px 20px;
-  margin-bottom: 20px;
-  border-radius: @border-radius;
-}
-
-.ExtensionList-Label {
-  margin-top: 0;
-  color: @muted-color;
-}
-
 .ExtensionListItem.disabled {
   .ExtensionListItem-title {
     opacity: 0.5;
@@ -64,18 +64,18 @@
     transform: scale(1.05);
   }
 
+  .ExtensionListItem-title {
+    display: block;
+    text-align: center;
+    margin-top: 5px;
+    color: @text-color;
+  }
+
   a:hover {
     text-decoration: none;
   }
 }
 
-.ExtensionListItem-title {
-  display: block;
-  text-align: center;
-  margin-top: 5px;
-  color: @text-color;
-}
-
 .ExtensionIcon {
   width: 90px;
   height: 90px;

less/admin/MailPage.less

@@ -1,5 +1,4 @@
 .MailPage {
-  padding-bottom: 30px;
 
   @media @desktop-up {
     .container {
@@ -8,11 +7,11 @@
     }
   }
 
-  button, .Alert {
+  fieldset, .Alert {
     margin-bottom: 20px;
   }
 
-  ul {
+  fieldset > ul {
     list-style: none;
     margin: 0;
     padding: 0;

less/admin/PermissionsPage.less

@@ -1,9 +1,15 @@
 .PermissionsPage-groups {
   background: @control-bg;
   border-radius: @border-radius;
+  max-width: calc(~'100% - 60px');
   display: block;
+  margin-left: 30px;
   overflow-x: auto;
-  padding: 10px;
+  padding: 10px 0 8px;
+
+  > .container {
+    padding: 0 10px;
+  }
 }
 .Group {
   width: 90px;
@@ -40,6 +46,7 @@
 
 .PermissionGrid {
   white-space: nowrap;
+  padding-left: 0 12px;
 
   td, th {
     padding: 5px;