Offer conversation deletion in the desktop PM context menu

tools/chatgui/src/channellist.cpp

@@ -224,8 +224,17 @@ ChannelList::ChannelList(DbManager* db, QWidget *parent)
     connect(m_listView, &QWidget::customContextMenuRequested, this, [this](const QPoint& point) {
         auto index = m_listView->indexAt(point);
         QString channel = index.data(ChannelChannelIdRole).toString();
-        if (!index.isValid() || channel.isEmpty() || channel.startsWith(QStringLiteral("dm:"))) return;
+        if (!index.isValid() || channel.isEmpty()) return;
         QMenu menu(this);
+        if (channel.startsWith(QStringLiteral("dm:"))) {
+            const QString conv = channel.mid(3), name = index.data(ChannelNameRole).toString();
+            const quint64 generation = index.data(ChannelDmGenerationRole).toULongLong();
+            auto* remove = menu.addAction(QCoreApplication::translate("ChatGui", "Delete conversation"));
+            remove->setObjectName(QStringLiteral("deleteDmAction"));
+            remove->setEnabled(generation && m_dmDeleting.value(conv) != generation);
+            if (menu.exec(m_listView->viewport()->mapToGlobal(point)) == remove) emit dmDeleteRequested(conv, generation, name);
+            return;
+        }
         auto* files = menu.addAction(QCoreApplication::translate("ChatGui", "Group files"));
         if (menu.exec(m_listView->viewport()->mapToGlobal(point)) == files) emit filesRequested(channel);
     });
@@ -271,6 +280,11 @@ bool ChannelList::eventFilter(QObject* target, QEvent* event) {
     return true;
 }
 
+void ChannelList::setDmDeleting(const QString& convId, quint64 generation, bool deleting) {
+    if (deleting) m_dmDeleting.insert(convId, generation);
+    else if (m_dmDeleting.value(convId) == generation) m_dmDeleting.remove(convId);
+}
+
 void ChannelList::refreshDmPresence() {
     if (!m_dmPresenceTimer->isActive()) m_dmPresenceTimer->start();
 }
@@ -367,6 +381,7 @@ void ChannelList::loadChannels() {
                 auto *item = new QStandardItem();
                 item->setData(name, ChannelNameRole);
                 item->setData(QStringLiteral("dm:") + dm.convId, ChannelChannelIdRole);
+                item->setData(QVariant::fromValue(dm.generation), ChannelDmGenerationRole);
                 item->setData(m_dmOnline.value(dm.convId), ChannelDmOnlineRole);
                 item->setData(QString(), ChannelLastMessageRole);
                 item->setData(0, ChannelUnreadCountRole);

tools/chatgui/src/channellist.h

@@ -23,6 +23,8 @@ public:
     void refreshDmPresence();
     void onDmCallRoute(const uint8_t* data, int len);
     void clearDmPresence();
+    /* Отмечает ожидающее удаление поколения PM; повторное действие в меню недоступно до результата. */
+    void setDmDeleting(const QString& convId, quint64 generation, bool deleting);
     void selectChannel(const QString& channelId);
     void setChannelPeersOnline(const QString& channelId, int count);
     void setAutoConnectActive(bool active);
@@ -32,6 +34,7 @@ public:
 
 signals:
     void channelSelected(const QString& channelId);
+    void dmDeleteRequested(const QString& convId, quint64 generation, const QString& name);
     void filesRequested(const QString& channelId);
     void ownFilesDropped(const QString& channelId, const QStringList& paths);
     void joinRequested();
@@ -50,6 +53,7 @@ private:
     QLabel             *m_dropHint;
     bool                m_autoConnectActive = false;
     QHash<QString, bool> m_dmOnline;
+    QHash<QString, quint64> m_dmDeleting; /* conv_id → поколение ожидающего удаления */
     QTimer* m_dmPresenceTimer;
     CpuLoadIndicator* m_cpuLoad;
 };