Permission model

Add a model for managing permissions (power levels) in rooms. This gets rid of a whole bunch of boiler plate in NeoChat and as a bonus makes it easy to add a feature to allow setting the permission level for any event.

src/enums/powerlevel.cpp

@@ -0,0 +1,107 @@
+// SPDX-FileCopyrightText: 2024 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+#include "powerlevel.h"
+
+QString PowerLevel::nameForLevel(Level level)
+{
+    switch (level) {
+    case PowerLevel::Member:
+        return i18n("Member");
+    case PowerLevel::Moderator:
+        return i18n("Moderator");
+    case PowerLevel::Admin:
+        return i18n("Admin");
+    case PowerLevel::Mute:
+        return i18n("Mute");
+    case PowerLevel::Custom:
+        return i18n("Custom");
+    default:
+        return {};
+    }
+}
+
+int PowerLevel::valueForLevel(Level level)
+{
+    switch (level) {
+    case PowerLevel::Member:
+        return 0;
+    case PowerLevel::Moderator:
+        return 50;
+    case PowerLevel::Admin:
+        return 100;
+    case PowerLevel::Mute:
+        return -1;
+    default:
+        return {};
+    }
+}
+
+PowerLevel::Level PowerLevel::levelForValue(int value)
+{
+    switch (value) {
+    case 0:
+        return PowerLevel::Member;
+    case 50:
+        return PowerLevel::Moderator;
+    case 100:
+        return PowerLevel::Admin;
+    case -1:
+        return PowerLevel::Mute;
+    default:
+        return PowerLevel::Custom;
+    }
+}
+
+PowerLevelModel::PowerLevelModel(QObject *parent)
+    : QAbstractListModel(parent)
+{
+}
+
+bool PowerLevelModel::showMute() const
+{
+    return m_showMute;
+}
+
+void PowerLevelModel::setShowMute(bool showMute)
+{
+    if (showMute == m_showMute) {
+        return;
+    }
+    m_showMute = showMute;
+    Q_EMIT showMuteChanged();
+}
+
+QVariant PowerLevelModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid()) {
+        return {};
+    }
+    if (index.row() >= rowCount()) {
+        qDebug() << "PowerLevelModel, something's wrong: index.row() >= m_rules.count()";
+        return {};
+    }
+
+    const auto level = static_cast<PowerLevel::Level>(index.row());
+    if (role == NameRole) {
+        return i18nc("%1 is the name of the power level, e.g. admin and %2 is the value that represents.",
+                     "%1 (%2)",
+                     PowerLevel::nameForLevel(level),
+                     PowerLevel::valueForLevel(level));
+    }
+    if (role == ValueRole) {
+        return PowerLevel::valueForLevel(level);
+    }
+    return {};
+}
+
+int PowerLevelModel::rowCount(const QModelIndex &parent) const
+{
+    Q_UNUSED(parent)
+    return PowerLevel::NUMLevels - (m_showMute ? 0 : 1);
+}
+
+QHash<int, QByteArray> PowerLevelModel::roleNames() const
+{
+    return {{NameRole, "name"}, {ValueRole, "value"}};
+}