viewer: migrate to vue 3, general refactoring and cleanup

Non-exhaustive list of fixes and improvements done at the same time:

- html default background to grey (avoids white flash during init)
- unified links behavior
- added more theme variables
- removed the flex-expand transition (it wasn't working) and replaced it
  with a slide
- fixed LdLoading not centered on the content
- title on removable tags
- fixed an issue with encoded URI from vue-router
- unified Item resource URLs
- removed the iframe for PlainTextViewer (it wasn't working properly)
  and replaced it with a pre
- fixed clear and search buttons tabindex
- fixed the information panel bumping up during the fade animation of
  tag's dropdown
- fixed some focus outlines not appearing correctly
- moved CSS variables to the :root context
- Code cleaning

GitHub: closes #217
GitHub: closes #300
GitHub: closes #297
GitHub: closes #105
GitHub: closes #267
GitHub: closes #275
GitHub: closes #228
GitHub: closes #215
GitHub: closes #112

1 files changed, 9 insertions, 13 deletions

diff --git a/viewer/src/plugins/router.ts b/viewer/src/plugins/router.ts
index 03ca021..8568173 100644
--- a/viewer/src/plugins/router.ts
+++ b/viewer/src/plugins/router.ts
@@ -1,7 +1,7 @@
 /* ldgallery - A static generator which turns a collection of tagged
 --             pictures into a searchable web gallery.
 --
--- Copyright (C) 2019-2020  Guillaume FOUET
+-- Copyright (C) 2019-2022  Guillaume FOUET
 --
 -- This program is free software: you can redistribute it and/or modify
 -- it under the terms of the GNU Affero General Public License as
@@ -17,26 +17,22 @@
 -- along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-import Vue from "vue";
-import VueRouter, { RouteConfig } from "vue-router";
-import GalleryNavigation from "@/views/GalleryNavigation.vue";
+import GalleryNavigation from '@/views/GalleryNavigation.vue';
+import { createRouter, createWebHashHistory, RouteRecordRaw } from 'vue-router';
 
-Vue.use(VueRouter);
-
-const routes: RouteConfig[] = [
+const routes: Array<RouteRecordRaw> = [
   {
-    path: "*",
-    name: "GalleryNavigation",
+    path: '/:catchAll(.*)',
+    name: 'GalleryNavigation',
     component: GalleryNavigation,
     props: route => ({
-      path: route.params.pathMatch,
+      path: decodeURIComponent(route.path),
       query: Object.keys(route.query),
     }),
   },
 ];
 
-const router = new VueRouter({
+export default createRouter({
+  history: createWebHashHistory(),
   routes,
 });
-
-export default router;