Merge pull request #43 from acsone/READ-ONLY_Z_COMBOBOX

Table linkbase rendering: make z axis drop-down list read-only

arelle/ViewWinRenderedGrid.py

@@ -310,6 +310,7 @@ def zAxis(self, row, zStructuralNode, clearZchoices):
                              value=comboBoxValue,
                              selectindex=zStructuralNode.choiceNodeIndex if i >= 0 else None,
                              columnspan=2,
+                             state=["readonly"],
                              comboboxselected=self.onZComboBoxSelected)
                 combobox.zStructuralNode = zStructuralNode
                 combobox.zAxisIsOpenExplicitDimension = zAxisIsOpenExplicitDimension