Adds contrast tab to the project widget

pyproject.toml

@@ -52,5 +52,6 @@ extend-ignore-names = ['allKeys',
                        'showEvent',
                        'sizeHint',
                        'stepBy',
+                       'supportedDropActions',
                        'textFromValue',
-                       'valueFromText',]
+                       'valueFromText',]

rascal2/widgets/delegates.py

@@ -113,20 +113,27 @@ def setModelData(self, editor, model, index):
         model.setData(index, data, QtCore.Qt.ItemDataRole.EditRole)
 
 
-class ParametersDelegate(QtWidgets.QStyledItemDelegate):
+class ProjectFieldDelegate(QtWidgets.QStyledItemDelegate):
     """Item delegate to choose from existing draft project parameters."""
 
-    def __init__(self, project_widget, parent):
+    def __init__(self, project_widget, field, parent):
         super().__init__(parent)
+        self.field = field
         self.project_widget = project_widget
 
     def createEditor(self, parent, option, index):
         widget = QtWidgets.QComboBox(parent)
-        parameters = self.project_widget.draft_project["parameters"]
-        names = [p.name for p in parameters]
+        items = self.project_widget.draft_project[self.field]
+        names = [item.name for item in items]
         widget.addItems(names)
         widget.setCurrentText(index.data(QtCore.Qt.ItemDataRole.DisplayRole))
 
+        # make combobox searchable
+        widget.setEditable(True)
+        widget.setInsertPolicy(widget.InsertPolicy.NoInsert)
+        widget.setFrame(False)
+        widget.completer().setCompletionMode(QtWidgets.QCompleter.CompletionMode.PopupCompletion)
+
         return widget
 
     def setEditorData(self, editor: QtWidgets.QWidget, index):