Fix #178

src/app/components/app-setup/app-setup.component.html

@@ -67,6 +67,11 @@
             </mat-error>
         </mat-form-field>
 
+        <!-- notifications (snackbar) -->
+        <mat-checkbox name="notifications" [(ngModel)]="enableNotifications" [ngModelOptions]="{standalone: true}">
+          {{ uitextEnableNotifications }}
+        </mat-checkbox>
+
         <!-- langue -->
         <mat-form-field>
             <mat-select [placeholder]="uitextLanguage" [(value)]="currentLanguageCode" data-testid="language-select">

src/app/components/app-setup/app-setup.component.ts

@@ -52,6 +52,15 @@ export class ApplicationSetupComponent extends BaseComponent implements Observer
         this.appSetupService.language = this.intlService.currentLanguage;
     }
 
+    /** notifications à l'écran (snackbar) */
+    public get enableNotifications(): boolean {
+        return this.appSetupService.enableNotifications;
+    }
+
+    public set enableNotifications(v: boolean) {
+        this.appSetupService.enableNotifications = v;
+    }
+
     public get uitextTitle(): string {
         return this.intlService.localizeText("INFO_SETUP_TITLE");
     }
@@ -72,10 +81,15 @@ export class ApplicationSetupComponent extends BaseComponent implements Observer
         return this.intlService.localizeText("INFO_SETUP_NEWTON_MAX_ITER");
     }
 
+    public get uitextEnableNotifications(): string {
+        return this.intlService.localizeText("INFO_SETUP_ENABLE_NOTIFICATIONS");
+    }
+
     public get uitextMustBeANumber(): string {
         return this.intlService.localizeText("ERROR_PARAM_MUST_BE_A_NUMBER");
     }
 
+
     public storePreferences() {
         this.appSetupService.saveValuesIntoLocalStorage();
         this.snackBar.open(this.intlService.localizeText("INFO_SNACKBAR_SETTINGS_SAVED"), "OK", {
@@ -104,6 +118,9 @@ export class ApplicationSetupComponent extends BaseComponent implements Observer
         // modèle du composant BaseParamInputComponent du max d'itérations pour Newton
         this.newtonMaxIter = new NgBaseParam("nmi", ParamDomainValue.POS, this.appSetupService.newtonMaxIterations);
         this.newtonMaxIter.addObserver(this);
+
+        // notifications
+        this.enableNotifications = this.appSetupService.enableNotifications;
     }
 
     ngOnInit() {

src/app/config.json

@@ -3,6 +3,7 @@
         "displayPrecision": 0.001,
         "computePrecision": 0.0001,
         "newtonMaxIterations": 50,
+        "enableNotifications": true,
         "language": "fr"
     },
     "themes": [

src/app/services/app-setup/app-setup.service.ts

@@ -19,6 +19,8 @@ export class ApplicationSetupService extends Observable {
     public displayPrecision = 0.001;
     public computePrecision = 0.0001;
     public newtonMaxIterations = 50;
+    public enableNotifications = true;
+
     /**
      * just stores the current language preference, does not transmit it to I18nService, that is
      * not available here.
@@ -82,6 +84,7 @@ export class ApplicationSetupService extends Observable {
         this.storage.set(this.LOCAL_STORAGE_PREFIX + "displayPrecision", this.displayPrecision);
         this.storage.set(this.LOCAL_STORAGE_PREFIX + "computePrecision", this.computePrecision);
         this.storage.set(this.LOCAL_STORAGE_PREFIX + "newtonMaxIterations", this.newtonMaxIterations);
+        this.storage.set(this.LOCAL_STORAGE_PREFIX + "enableNotifications", this.enableNotifications);
         this.storage.set(this.LOCAL_STORAGE_PREFIX + "language", this.language);
     }
 
@@ -119,6 +122,11 @@ export class ApplicationSetupService extends Observable {
             this.newtonMaxIterations = newtonMaxIterations;
             loadedKeys.push("newtonMaxIterations");
         }
+        const enableNotifications = this.storage.get(this.LOCAL_STORAGE_PREFIX + "enableNotifications");
+        if (enableNotifications !== undefined) {
+            this.enableNotifications = enableNotifications;
+            loadedKeys.push("enableNotifications");
+        }
         const language = this.storage.get(this.LOCAL_STORAGE_PREFIX + "language");
         if (language !== undefined) {
             this.language = language;
@@ -136,6 +144,7 @@ export class ApplicationSetupService extends Observable {
             this.displayPrecision = data.params.displayPrecision;
             this.computePrecision = data.params.computePrecision;
             this.newtonMaxIterations = data.params.newtonMaxIterations;
+            this.enableNotifications = data.params.enableNotifications;
             this.language = data.params.language;
             // load themes for calculators list page
             this.themes = data.themes;

src/app/services/notifications/notifications.service.ts

 import { Injectable } from "@angular/core";
 import { MatSnackBar } from "@angular/material";
 
+import { ApplicationSetupService } from "../app-setup/app-setup.service";
+
 /**
  * Displays a notifications queue as consecutive snackbars
  */
@@ -13,7 +15,8 @@ export class NotificationsService {
     private isOpen: boolean;
 
     public constructor(
-        private snackBar: MatSnackBar
+        private snackBar: MatSnackBar,
+        private setupService: ApplicationSetupService
     ) {
         this.notifications = [];
         this.isOpen = false;
@@ -21,12 +24,14 @@ export class NotificationsService {
 
     /** Push a notification and display it as soon as possible */
     public notify(message: string, duration: number = 2000, action: string = "OK") {
-        this.notifications.push({
-            message: message,
-            duration: duration,
-            action: action
-        });
-        this.show();
+        if (this.setupService.enableNotifications) {
+            this.notifications.push({
+                message: message,
+                duration: duration,
+                action: action
+            });
+            this.show();
+        }
     }
 
     /** Show all messages in the FIFO queue one after another */

src/locale/messages.en.json

@@ -258,6 +258,7 @@
     "INFO_REQUIRES": "requires",
     "INFO_SECTIONPARAMETREE_TITRE_COURT": "Param. section",
     "INFO_SECTIONPARAMETREE_TITRE": "Parametric section",
+    "INFO_SETUP_ENABLE_NOTIFICATIONS": "Enable on-screen notifications",
     "INFO_SETUP_LANGUAGE": "Language",
     "INFO_SETUP_NEWTON_MAX_ITER": "Newton iteration limit",
     "INFO_SETUP_PRECISION_AFFICHAGE": "Display accuracy",

src/locale/messages.fr.json

@@ -258,6 +258,7 @@
     "INFO_REQUIRES": "dépend de",
     "INFO_SECTIONPARAMETREE_TITRE_COURT": "Sec. param.",
     "INFO_SECTIONPARAMETREE_TITRE": "Section paramétrée",
+    "INFO_SETUP_ENABLE_NOTIFICATIONS": "Activer les notifications à l'écran",
     "INFO_SETUP_LANGUAGE": "Langue",
     "INFO_SETUP_NEWTON_MAX_ITER": "Newton : nombre d'itérations maximum",
     "INFO_SETUP_PRECISION_AFFICHAGE": "Précision d'affichage",