Show warning message in TID manager when OIDs cannot be find

QgisModelBaker/gui/panel/tid_configurator_panel.py

@@ -68,7 +68,13 @@ def setup_dialog(self, qgis_project, configuration=None):
                     )
                     if valid:
                         self.configuration.tool = mode
+
+        if self.configuration and self.configuration.tool:
             self._reset_tid_configuration()
+        else:
+            return False, self.tr(
+                "We couldn't find a proper Interlis data source in the current project and there is no configured  connection to a Interlis database."
+            )
 
     def _reset_tid_configuration(self):
         self.layer_tids_panel.load_tid_config(self.qgis_project)

QgisModelBaker/gui/tid_manager.py

@@ -17,7 +17,9 @@
 """
 
 from qgis.core import QgsMapLayer, QgsProject
-from qgis.PyQt.QtWidgets import QDialog, QMessageBox
+from qgis.gui import QgsMessageBar
+from qgis.PyQt.QtCore import Qt
+from qgis.PyQt.QtWidgets import QDialog, QMessageBox, QSizePolicy
 
 from QgisModelBaker.gui.panel.tid_configurator_panel import TIDConfiguratorPanel
 from QgisModelBaker.utils import gui_utils
@@ -46,7 +48,16 @@ def __init__(self, iface, parent=None, base_config=None):
 
         self.setStyleSheet(gui_utils.DEFAULT_STYLE)
 
-        self.tid_configurator_panel.setup_dialog(QgsProject.instance())
+        self.bar = QgsMessageBar()
+        self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
+        self.layout().addWidget(self.bar, 0, 0, Qt.AlignTop)
+
+        result, message = self.tid_configurator_panel.setup_dialog(
+            QgsProject.instance()
+        )
+        if not result:
+            self.tid_configurator_panel.setEnabled(False)
+            self.bar.pushWarning(self.tr("Warning"), message)
 
     def _close_editing(self):
         editable_layers = []