Port RoomList to TreeView

Use a tree model for the room list

closes network/neochat#156

BUG: 456643

src/enums/neochatroomtype.h

@@ -0,0 +1,97 @@
+// SPDX-FileCopyrightText: 2023 Tobias Fella <tobias.fella@kde.org>
+// SPDX-License-Identifier: LGPL-2.0-or-later
+
+#pragma once
+
+#include <QObject>
+
+#include "neochatroom.h"
+#include <Quotient/quotient_common.h>
+
+#include <KLocalizedString>
+
+class NeoChatRoomType : public QObject
+{
+    Q_OBJECT
+    QML_ELEMENT
+    QML_UNCREATABLE("")
+
+public:
+    /**
+     * @brief Defines the room list categories a room can be assigned.
+     */
+    enum Types {
+        Search = 0, /**< So we can show a search delegate if needed, e.g. collapsed mode. */
+        Invited, /**< The user has been invited to the room. */
+        Favorite, /**< The room is set as a favourite. */
+        Direct, /**< The room is a direct chat. */
+        Normal, /**< The default category for a joined room. */
+        Deprioritized, /**< The room is set as low priority. */
+        Space, /**< The room is a space. */
+        AddDirect, /**< So we can show the add friend delegate. */
+    };
+    Q_ENUM(Types);
+
+    static NeoChatRoomType::Types typeForRoom(const NeoChatRoom *room)
+    {
+        if (room->isSpace()) {
+            return NeoChatRoomType::Space;
+        }
+        if (room->joinState() == Quotient::JoinState::Invite) {
+            return NeoChatRoomType::Invited;
+        }
+        if (room->isFavourite()) {
+            return NeoChatRoomType::Favorite;
+        }
+        if (room->isLowPriority()) {
+            return NeoChatRoomType::Deprioritized;
+        }
+        if (room->isDirectChat()) {
+            return NeoChatRoomType::Direct;
+        }
+        return NeoChatRoomType::Normal;
+    }
+
+    static QString typeName(int category)
+    {
+        switch (category) {
+        case NeoChatRoomType::Invited:
+            return i18n("Invited");
+        case NeoChatRoomType::Favorite:
+            return i18n("Favorite");
+        case NeoChatRoomType::Direct:
+            return i18n("Friends");
+        case NeoChatRoomType::Normal:
+            return i18n("Normal");
+        case NeoChatRoomType::Deprioritized:
+            return i18n("Low priority");
+        case NeoChatRoomType::Space:
+            return i18n("Spaces");
+        case NeoChatRoomType::Search:
+            return i18n("Search");
+        default:
+            return {};
+        }
+    }
+    static QString typeIconName(int category)
+    {
+        switch (category) {
+        case NeoChatRoomType::Invited:
+            return QStringLiteral("user-invisible");
+        case NeoChatRoomType::Favorite:
+            return QStringLiteral("favorite");
+        case NeoChatRoomType::Direct:
+            return QStringLiteral("dialog-messages");
+        case NeoChatRoomType::Normal:
+            return QStringLiteral("group");
+        case NeoChatRoomType::Deprioritized:
+            return QStringLiteral("object-order-lower");
+        case NeoChatRoomType::Space:
+            return QStringLiteral("group");
+        case NeoChatRoomType::Search:
+            return QStringLiteral("search");
+        default:
+            return QStringLiteral("tools-report-bug");
+        }
+    }
+};