From d2b54cb022f2a2c966a66b197af44cb2bbc687c2 Mon Sep 17 00:00:00 2001
From: wurstsalat <mailtrash@posteo.de>
Date: Mon, 22 Aug 2022 20:21:07 +0200
Subject: imprv: MessageActionsBox: Disable encryption button if MUC is public

Fixes #10959
---
 gajim/common/modules/contacts.py      |  9 +++++++++
 gajim/data/gui/message_actions_box.ui |  3 +--
 gajim/gtk/message_actions_box.py      | 22 +++++++++++++++++++---
 3 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/gajim/common/modules/contacts.py b/gajim/common/modules/contacts.py
index 6eb4e1bc6..e8e65fb39 100644
--- a/gajim/common/modules/contacts.py
+++ b/gajim/common/modules/contacts.py
@@ -671,6 +671,15 @@ class GroupchatContact(CommonContact):
             return False
         return disco_info.is_irc
 
+    @property
+    def encryption_available(self) -> bool:
+        disco_info = self.get_disco()
+        if disco_info is None:
+            return True
+
+        return (disco_info.muc_is_members_only and
+                disco_info.muc_is_nonanonymous)
+
     def get_config_value(self, field_name: str) -> Any:
         disco_info = self.get_disco()
         assert disco_info is not None
diff --git a/gajim/data/gui/message_actions_box.ui b/gajim/data/gui/message_actions_box.ui
index 29e94a00b..8a7c852bf 100644
--- a/gajim/data/gui/message_actions_box.ui
+++ b/gajim/data/gui/message_actions_box.ui
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.38.2 -->
+<!-- Generated with glade 3.40.0 -->
 <interface>
   <requires lib="gtk+" version="3.24"/>
   <object class="GtkBox" id="box">
@@ -91,7 +91,6 @@
         <property name="visible">True</property>
         <property name="can-focus">True</property>
         <property name="receives-default">True</property>
-        <property name="tooltip-text" translatable="yes">Choose encryption</property>
         <property name="relief">none</property>
         <child>
           <object class="GtkImage" id="encryption_image">
diff --git a/gajim/gtk/message_actions_box.py b/gajim/gtk/message_actions_box.py
index 42a6be24b..10fcb31c2 100644
--- a/gajim/gtk/message_actions_box.py
+++ b/gajim/gtk/message_actions_box.py
@@ -219,9 +219,25 @@ class MessageActionsBox(Gtk.Grid, ged.EventHelper):
 
         self._set_settings_menu(contact)
 
-        encryption = self._contact.settings.get('encryption')
-        self._set_encryption_state(encryption)
-        self._set_encryption_details(encryption)
+        encryption_available = True
+        if isinstance(self._contact, GroupchatContact):
+            encryption_available = self._contact.encryption_available
+            if not encryption_available:
+                self._ui.encryption_details_button.set_visible(False)
+                self._ui.encryption_menu_button.set_sensitive(False)
+                self._ui.encryption_image.set_from_icon_name(
+                    'channel-insecure-symbolic', Gtk.IconSize.MENU)
+                self._ui.encryption_menu_button.set_tooltip_text(
+                    _('This is a public group chat. '
+                      'Encryption is not available.'))
+
+        if encryption_available:
+            self._ui.encryption_menu_button.set_sensitive(True)
+            self._ui.encryption_menu_button.set_tooltip_text(
+                _('Choose encryption'))
+            encryption = self._contact.settings.get('encryption')
+            self._set_encryption_state(encryption)
+            self._set_encryption_details(encryption)
 
         self._set_chatstate(True)
 
-- 
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