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, 93 insertions, 0 deletions

diff --git a/viewer/src/services/itemComparator.ts b/viewer/src/services/itemComparator.ts
new file mode 100644
index 0000000..25010b8
--- /dev/null
+++ b/viewer/src/services/itemComparator.ts
@@ -0,0 +1,93 @@
+/* ldgallery - A static generator which turns a collection of tagged
+--             pictures into a searchable web gallery.
+--
+-- 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
+-- published by the Free Software Foundation, either version 3 of the
+-- License, or (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU Affero General Public License for more details.
+--
+-- You should have received a copy of the GNU Affero General Public License
+-- along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import { Item, ItemSortStr } from '@/@types/gallery';
+import i18n from '@/plugins/i18n';
+import { isDirectory } from './itemGuards';
+
+const { t } = i18n.global;
+
+export type ItemComparator = (left: Item, right: Item) => number;
+export type ItemSort = { name: ItemSortStr, text: string; fn: ItemComparator };
+
+function _sortByPathAsc(left: Item, right: Item): number {
+  return left.path.localeCompare(right.path, undefined, {
+    sensitivity: 'base',
+    ignorePunctuation: true,
+    numeric: true,
+  });
+}
+
+function _sortByTitleAsc(left: Item, right: Item): number {
+  return left.title.localeCompare(right.title, undefined, {
+    sensitivity: 'base',
+    ignorePunctuation: true,
+    numeric: true,
+  });
+}
+
+function _sortByDateAsc(left: Item, right: Item): number {
+  return left.datetime.localeCompare(right.datetime); // TODO: handle timezones
+}
+
+function _sortDirectoryFirst(left: Item, right: Item): number {
+  const dLeft = isDirectory(left) ? 1 : 0;
+  const dRight = isDirectory(right) ? 1 : 0;
+  return dRight - dLeft;
+}
+
+function _reverse(fn: ItemComparator): ItemComparator {
+  return (l, r) => -fn(l, r);
+}
+
+function _chain(comparators: ItemComparator[]): ItemComparator {
+  return comparators.reduce((primary, tieBreaker) => (l, r) => {
+    const primaryComparison = primary(l, r);
+    return primaryComparison !== 0 ? primaryComparison : tieBreaker(l, r);
+  });
+}
+
+// ---
+
+export const useItemComparator = () => {
+  const ITEM_SORTS: ItemSort[] = [
+    {
+      name: 'title_asc',
+      text: t('command.sort.byTitleAsc'),
+      fn: _chain([_sortDirectoryFirst, _sortByTitleAsc, _sortByPathAsc]),
+    },
+    {
+      name: 'date_asc',
+      text: t('command.sort.byDateAsc'),
+      fn: _chain([_sortDirectoryFirst, _sortByDateAsc, _sortByPathAsc]),
+    },
+    {
+      name: 'date_desc',
+      text: t('command.sort.byDateDesc'),
+      fn: _chain([_sortDirectoryFirst, _reverse(_sortByDateAsc), _sortByPathAsc]),
+    },
+  ];
+
+  const DEFAULT = ITEM_SORTS[2]; // date_desc
+
+  return {
+    ITEM_SORTS,
+    DEFAULT,
+  };
+};