QuerySet: fix removing tag logic

gramps/gen/db/base.py

@@ -2329,10 +2329,10 @@ class QuerySet(object):
                 self.database.add_tag(tag, trans)
             commit_func = self.database.get_table_func(self.table,"commit_func")
             for item in self.generator:
-                if tag.handle not in item.tag_list:
+                if remove and (tag.handle in item.tag_list):
-                    item.add_tag(tag.handle)
-                elif remove:
                     item.remove_tag(tag.handle)
+                elif (not remove) and (tag.handle not in item.tag_list):
+                    item.add_tag(tag.handle)
                 else:
                     continue
                 commit_func(item, trans)

gramps/gen/db/generic.py

@@ -2162,3 +2162,13 @@ class DbGeneric(DbWriteBase, DbReadBase, UpdateCallback, Callback):
             return ast.literal_eval(version)
         else:
             return (0, 0, 0)
+
+    def support_remote_changes(self):
+        return True
+
+    def get_updates_since(self, last_datetime):
+        from dateutil.parser import parse
+        ## get the last items from the table in a non-disruptive fashion
+        ## [(signal, args), ...]
+        return [] ## [("person-delete", ([person.handle],))]
+

gramps/gui/viewmanager.py

@@ -311,6 +311,32 @@ class ViewManager(CLIManager):
         # Need to call after plugins have been registered
         self.uistate.connect('update-available', self.process_updates)
         self.check_for_updates()
+        ## if sync flag:
+        self.start_update_remote_changes()
+
+    def start_update_remote_changes(self):
+        """
+        """
+        global last_datetime
+        from gi.repository import GLib
+        from datetime import datetime, timezone
+        last_datetime = datetime.now(timezone.utc).astimezone() # local time, with timezone
+
+        def update_remote_changes():
+            """
+            """
+            global last_datetime
+            if self.dbstate.db.support_remote_changes() and self.dbstate.open:
+                updates = self.dbstate.db.get_updates_since(last_datetime)
+                last_datetime = datetime.now(timezone.utc).astimezone() # local time, with timezone
+                for update in updates:
+                    signal, args = update
+                    args = eval(args) # "person-delete", ([person.handle],)
+                    GLib.idle_add(self.dbstate.db.emit, signal, args)
+                    print("Emitting ", signal, args)
+            return True # True continues
+
+        GLib.timeout_add_seconds(5, update_remote_changes)
 
     def check_for_updates(self):
         """

gramps/plugins/database/dbapi.py

@@ -132,6 +132,7 @@ class DBAPI(DbGeneric):
 
         self.dbapi = default_settings["dbapi"]
         self.update_schema()
+        self.start_update_changes()
 
     def update_schema(self):
         """
@@ -2012,3 +2013,27 @@ class DBAPI(DbGeneric):
         summary = super().get_summary()
         summary.update(self.dbapi.__class__.get_summary())
         return summary
+
+    def start_update_changes(self):
+        """
+        Listen to all changes, to emit them on remote databases.
+        """
+        from functools import partial
+        signals = []
+        for item in ["person", "family", "source", "citation",
+                     "event", "media", "place", "repository",
+                     "note", "tag"]:
+            signals.append('%s-update' % item)
+            signals.append('%s-delete' % item)
+            signals.append('%s-add' % item)
+        signals += ['person-rebuild', 'family-rebuild', 'place-rebuild', 'source-rebuild', 
+                    'citation-rebuild', 'media-rebuild', 'event-rebuild', 'repository-rebuild',
+                    'note-rebuild', 'tag-rebuild', 'home-person-changed']
+        for signal in signals:
+            self.connect(signal, lambda *args, signal=signal: self.record_update_change(signal, *args))
+        
+    def record_update_change(self, signal, *args):
+        """
+        Record the signal in the signal table.
+        """
+        print(signal, args)