Preferences: Add Purge Chat History button

gajim/common/storage/archive.py

@@ -1375,6 +1375,18 @@ def forget_jid_data(self, account: str, jid: JID) -> None:
         self._delayed_commit()
         log.info('Forgot data for: %s', jid)
 
+    def remove_all_history(self) -> None:
+        """
+        Remove all messages for all accounts
+        """
+        statements = [
+            'DELETE FROM logs',
+            'DELETE FROM jids',
+            'DELETE FROM last_archive_message'
+        ]
+        self._execute_multiple(statements)
+        log.info('Removed all chat history')
+
     def _cleanup_chat_history(self) -> None:
         """
         Remove messages from account where messages are older than max_age

gajim/gtk/preferences.py

@@ -41,6 +41,8 @@
 from .const import SettingKind
 from .const import SettingType
 from .controls.groupchat import GroupchatControl
+from .dialogs import DialogButton
+from .dialogs import ConfirmationDialog
 from .emoji_chooser import emoji_chooser
 from .settings import PopoverSetting
 from .settings import SettingsBox
@@ -920,6 +922,9 @@ def __init__(self, pref_window: Preferences) -> None:
         reset_button.connect('clicked', self._on_reset_hints)
         reset_button.set_sensitive(self._check_hints_reset)
 
+        purge_history_button = pref_window.get_ui().purge_history_button
+        purge_history_button.connect('clicked', self._on_purge_history_clicked)
+
     @staticmethod
     def _get_proxies() -> dict[str, str]:
         return {proxy: proxy for proxy in app.settings.get_proxies()}
@@ -943,6 +948,23 @@ def _on_reset_hints(self, button: Gtk.Button) -> None:
             app.settings.set(hint, True)
         button.set_sensitive(False)
 
+    @staticmethod
+    def _on_purge_history_clicked(button: Gtk.Button) -> None:
+        def _purge() -> None:
+            button.set_sensitive(False)
+            app.storage.archive.remove_all_history()
+            app.window.quit()
+
+        ConfirmationDialog(
+            _('Purge all Chat History'),
+            _('Purge all Chat History'),
+            _('Do you really want to remove all chat messages from Gajim?\n'
+              'Warning: This can’t be undone!\n'
+              'Gajim will quit afterwards.'),
+            [DialogButton.make('Cancel'),
+             DialogButton.make('Remove',
+                               text=_('_Purge'),
+                               callback=_purge)]).show()
 
 class Advanced(PreferenceBox):
     def __init__(self, pref_window: Preferences) -> None: