fix: simple rock-ramp calculator: enable backwater curve generation button...

fix: simple rock-ramp calculator: enable backwater curve generation button only if calculation has been run

refs #609

src/app/components/generic-calculator/calculator.component.html

@@ -214,7 +214,7 @@
                     </button>
 
                     <button mat-raised-button color="accent" id="generate-backwater-curve" *ngIf="isPAM"
-                        (click)="generateBackwaterInPAM()">
+                        (click)="generateBackwaterInPAM()" [disabled]="!generateCrPamEnabled">
                         {{ uitextGenerateBackwaterInPAM }}
                     </button>
 

src/app/components/generic-calculator/calculator.component.ts

@@ -1020,6 +1020,10 @@ export class GenericCalculatorComponent implements OnInit, DoCheck, AfterViewChe
         );
     }
 
+    public get generateCrPamEnabled(): boolean {
+        return this.hasResults && !this._formulaire.currentNub.result.hasErrorMessages();
+    }
+
     public get uitextGenerateParSimulationTitle(): string {
         const parCalage = (this._formulaire.currentNub as Par);
         if (!this.hasResults || parCalage.result.hasErrorMessages()) {