Fix #367 - set parameter to calc mode when singleValue is undefined

src/app/components/param-field-line/param-field-line.component.ts

@@ -4,7 +4,7 @@ import { I18nService } from "../../services/internationalisation.service";
 import { NgParameter, ParamRadioConfig } from "../../formulaire/elements/ngparam";
 import { NgParamInputComponent } from "../ngparam-input/ngparam-input.component";
 import { ServiceFactory } from "../../services/service-factory";
-import { ParamValueMode, ParallelStructure } from "jalhyd";
+import { ParamValueMode, ParallelStructure, ParamCalculability } from "jalhyd";
 import { FormulaireService } from "../../services/formulaire.service";
 import { ParamLinkComponent } from "../param-link/param-link.component";
 import { ParamValuesComponent } from "../param-values/param-values.component";
@@ -220,6 +220,15 @@ export class ParamFieldLineComponent implements OnChanges {
 
             case "cal":
                 this.param.setCalculated(); // sets mode to CALCUL and more
+                // did some nasty rascal tick the "create module with empty fields" evil option,
+                // then chose to set a DICHO param to CALC mode without setting a value first ?
+                if (
+                    this.param.paramDefinition.calculability === ParamCalculability.DICHO
+                    && this.param.paramDefinition.singleValue === undefined
+                ) {
+                    // restore dedicated initValue
+                    this.param.paramDefinition.singleValue = this.param.paramDefinition.initValue;
+                }
                 break;
 
             case "link":