[dbmanager] Fixes various signal bugs after 8bda5c

Fixes some unreported glitches after new signals migration.

Also fixes #14649

python/plugins/db_manager/db_model.py

@@ -20,7 +20,8 @@
  ***************************************************************************/
 """
 
-from PyQt.QtCore import Qt, QObject, qDebug, QByteArray, QMimeData, QDataStream, QIODevice, QFileInfo, QAbstractItemModel, QModelIndex, pyqtSignal
+from functools import partial
+from PyQt.QtCore import Qt, QObject, qDebug, QByteArray, QMimeData, QDataStream, QIODevice, QFileInfo, QAbstractItemModel, QModelIndex, pyqtSignal, pyqtSlot
 from PyQt.QtWidgets import QApplication, QMessageBox
 from PyQt.QtGui import QIcon
 
@@ -302,7 +303,7 @@ def __init__(self, parent=None):
         for dbtype in supportedDbTypes():
             dbpluginclass = createDbPlugin(dbtype)
             item = PluginItem(dbpluginclass, self.rootItem)
-            item.itemChanged.connect(self.refreshItem)
+            item.itemChanged.connect(partial(self.refreshItem, item))
 
     def refreshItem(self, item):
         if isinstance(item, TreeItem):
@@ -486,7 +487,7 @@ def _refreshIndex(self, index, force=False):
             if prevPopulated or force:
                 if item.populate():
                     for child in item.childItems:
-                        child.itemChanged.connect(self.refreshItem)
+                        child.itemChanged.connect(partial(self.refreshItem, item))
                     self._onDataChanged(index)
                 else:
                     self.notPopulated.emit(index)

python/plugins/db_manager/db_plugins/spatialite/plugin.py

@@ -148,7 +148,7 @@ def runVacuumActionSlot(self, item, action, parent):
         self.runVacuum()
 
     def runVacuum(self):
-        self.database().aboutToChange()
+        self.database().aboutToChange.emit()
         self.database().connector.runVacuum()
         self.database().refresh()
 

python/plugins/db_manager/dlg_create_table.py

@@ -24,7 +24,7 @@
 
 from PyQt.QtCore import Qt, QModelIndex
 from PyQt.QtWidgets import QItemDelegate, QComboBox, QDialog, QPushButton, QDialogButtonBox, QMessageBox, QApplication
-from PyQt.QtCore import QItemSelectionModel
+from PyQt.QtCore import QItemSelectionModel, pyqtSignal
 
 from .db_plugins.data_model import TableFieldsModel
 from .db_plugins.plugin import DbError, ConnectionError
@@ -37,6 +37,8 @@ class TableFieldsDelegate(QItemDelegate):
 
     """ delegate with some special item editors """
 
+    columnNameChanged = pyqtSignal()
+
     def __init__(self, field_types, parent=None):
         QItemDelegate.__init__(self, parent)
         self.fieldTypes = field_types