Add local channel deletion to desktop channel settings

tools/chatgui/src/messagelist.cpp

@@ -886,7 +886,8 @@ void MessageList::loadChannel(const QString& channelId) {
     m_callBtn->setVisible(isDmChannel(channelId));
     m_inviteBtn->setVisible(isDmChannel(channelId));
     m_peerStatus->setVisible(isDmChannel(channelId));
-    m_radioBtn->setVisible(!isDmChannel(channelId));
+    m_radioBtn->setVisible(!channelId.isEmpty() && !isDmChannel(channelId));
+    m_inputBar->setEnabled(!channelId.isEmpty());
     m_inputBar->setRecordingContext(m_db ? m_db->dbPath() + "/media" : QString(), channelId);
     m_readDebounce->stop();
 
@@ -900,6 +901,10 @@ void MessageList::loadChannel(const QString& channelId) {
     if (m_channelTitle) m_channelTitle->setText(title);
 
     m_inputBar->setDmMode(isDmChannel(channelId));
+    if (channelId.isEmpty()) {
+        DEBUG_INFO(DEBUG_CATEGORY_CHAT, "message list cleared: no channel selected");
+        return;
+    }
     /* История и состояния PM поступают из ядра в одном снимке. */
     if (isDmChannel(channelId)) {
         m_radioBtn->setEnabled(false);