Merge pull request #2941 from crazyserver/MOBILE-3833

MOBILE-3833 mod: Create a base module to remove duplicated getData func

src/addons/badges/pages/issued-badge/issued-badge.page.ts

@@ -52,7 +52,7 @@ export class AddonBadgesIssuedBadgePage implements OnInit {
      */
     ngOnInit(): void {
         this.courseId = CoreNavigator.getRouteNumberParam('courseId') || this.courseId; // Use 0 for site badges.
-        this.userId = CoreNavigator.getRouteNumberParam('userId') || CoreSites.getCurrentSite()!.getUserId();
+        this.userId = CoreNavigator.getRouteNumberParam('userId') || CoreSites.getRequiredCurrentSite().getUserId();
         this.badgeHash = CoreNavigator.getRouteParam('badgeHash') || '';
 
         this.fetchIssuedBadge().finally(() => {

src/addons/block/timeline/components/timeline/timeline.ts

@@ -69,12 +69,12 @@ export class AddonBlockTimelineComponent extends CoreBlockBaseComponent implemen
      * Component being initialized.
      */
     async ngOnInit(): Promise<void> {
-        this.currentSite = CoreSites.getCurrentSite();
+        this.currentSite = CoreSites.getRequiredCurrentSite();
 
-        this.filter = await this.currentSite!.getLocalSiteConfig('AddonBlockTimelineFilter', this.filter);
+        this.filter = await this.currentSite.getLocalSiteConfig('AddonBlockTimelineFilter', this.filter);
         this.switchFilter(this.filter);
 
-        this.sort = await this.currentSite!.getLocalSiteConfig('AddonBlockTimelineSort', this.sort);
+        this.sort = await this.currentSite.getLocalSiteConfig('AddonBlockTimelineSort', this.sort);
 
         super.ngOnInit();
     }

src/addons/calendar/calendar-lazy.module.ts

@@ -13,22 +13,11 @@
 // limitations under the License.
 
 import { Injector, NgModule } from '@angular/core';
-import { Route, RouterModule, ROUTES, Routes } from '@angular/router';
+import { RouterModule, ROUTES, Routes } from '@angular/router';
 
 import { buildTabMainRoutes } from '@features/mainmenu/mainmenu-tab-routing.module';
 import { AddonCalendarMainMenuHandlerService } from './services/handlers/mainmenu';
 
-export const AddonCalendarEditRoute: Route = {
-    path: 'edit/:eventId',
-    loadChildren: () =>
-        import('@/addons/calendar/pages/edit-event/edit-event.module').then(m => m.AddonCalendarEditEventPageModule),
-};
-
-export const AddonCalendarEventRoute: Route ={
-    path: 'event/:id',
-    loadChildren: () => import('@/addons/calendar/pages/event/event.module').then(m => m.AddonCalendarEventPageModule),
-};
-
 function buildRoutes(injector: Injector): Routes {
     return [
         {
@@ -48,8 +37,15 @@ function buildRoutes(injector: Injector): Routes {
             loadChildren: () =>
                 import('@/addons/calendar/pages/day/day.module').then(m => m.AddonCalendarDayPageModule),
         },
-        AddonCalendarEventRoute,
+        {
-        AddonCalendarEditRoute,
+            path: 'event/:id',
+            loadChildren: () => import('@/addons/calendar/pages/event/event.module').then(m => m.AddonCalendarEventPageModule),
+        },
+        {
+            path: 'edit/:eventId',
+            loadChildren: () =>
+                import('@/addons/calendar/pages/edit-event/edit-event.module').then(m => m.AddonCalendarEditEventPageModule),
+        },
         ...buildTabMainRoutes(injector, {
             redirectTo: 'index',
             pathMatch: 'full',

src/addons/calendar/pages/edit-event/edit-event.page.ts

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { Component, OnInit, OnDestroy, ViewChild, ElementRef, Optional } from '@angular/core';
+import { Component, OnInit, OnDestroy, ViewChild, ElementRef } from '@angular/core';
 import { FormControl, FormGroup, FormBuilder, Validators } from '@angular/forms';
 import { IonRefresher } from '@ionic/angular';
 import { CoreEvents } from '@singletons/events';
@@ -23,7 +23,6 @@ import { CoreDomUtils } from '@services/utils/dom';
 import { CoreTimeUtils } from '@services/utils/time';
 import { CoreUtils } from '@services/utils/utils';
 import { CoreCategoryData, CoreCourses, CoreCourseSearchedData, CoreEnrolledCourseData } from '@features/courses/services/courses';
-import { CoreSplitViewComponent } from '@components/split-view/split-view';
 import { CoreEditorRichTextEditorComponent } from '@features/editor/components/rich-text-editor/rich-text-editor';
 import {
     AddonCalendarProvider,
@@ -94,9 +93,8 @@ export class AddonCalendarEditEventPage implements OnInit, OnDestroy, CanLeave {
 
     constructor(
         protected fb: FormBuilder,
-        @Optional() protected svComponent: CoreSplitViewComponent,
     ) {
-        this.currentSite = CoreSites.getCurrentSite()!;
+        this.currentSite = CoreSites.getRequiredCurrentSite();
         this.errors = {
             required: Translate.instant('core.required'),
         };
@@ -572,15 +570,8 @@ export class AddonCalendarEditEventPage implements OnInit, OnDestroy, CanLeave {
             }
         }
 
-        if (this.svComponent?.outletActivated) {
+        this.originalData = undefined; // Avoid asking for confirmation.
-            // Empty form.
+        CoreNavigator.back();
-            this.hasOffline = false;
-            this.form.reset(this.originalData);
-            this.originalData = CoreUtils.clone(this.form.value);
-        } else {
-            this.originalData = undefined; // Avoid asking for confirmation.
-            CoreNavigator.back();
-        }
     }
 
     /**

src/addons/calendar/pages/event/event.html

@@ -15,26 +15,23 @@
                 [contextInstanceId]="event.contextInstanceId"></core-format-text>
         </h1>
         <ion-buttons slot="end">
-            <!-- The context menu will be added in here. -->
+            <core-context-menu>
+                <core-context-menu-item [hidden]="!eventLoaded || (!hasOffline && event && !event.deleted) || !isOnline"
+                    [priority]="400" [content]="'core.settings.synchronizenow' | translate" (action)="doRefresh(undefined, $event, true)"
+                    [iconAction]="syncIcon" [closeOnClick]="false">
+                </core-context-menu-item>
+                <core-context-menu-item [hidden]="!canEdit || !event || !event.canedit || event.deleted" [priority]="300"
+                    [content]="'core.edit' | translate" (action)="openEdit()" iconAction="fas-edit">
+                </core-context-menu-item>
+                <core-context-menu-item [hidden]="!event || !event.candelete || event.deleted" [priority]="200"
+                    [content]="'core.delete' | translate" (action)="deleteEvent()"
+                    iconAction="fas-trash"></core-context-menu-item>
+                <core-context-menu-item [hidden]="!event || !event.deleted" [priority]="200" [content]="'core.restore' | translate"
+                    (action)="undoDelete()" iconAction="fas-undo-alt"></core-context-menu-item>
+            </core-context-menu>
         </ion-buttons>
     </ion-toolbar>
 </ion-header>
-<core-navbar-buttons slot="end">
-    <core-context-menu>
-        <core-context-menu-item [hidden]="isSplitViewOn || !eventLoaded || (!hasOffline && event && !event.deleted) || !isOnline"
-            [priority]="400" [content]="'core.settings.synchronizenow' | translate" (action)="doRefresh(undefined, $event, true)"
-            [iconAction]="syncIcon" [closeOnClick]="false">
-        </core-context-menu-item>
-        <core-context-menu-item [hidden]="!canEdit || !event || !event.canedit || event.deleted" [priority]="300"
-            [content]="'core.edit' | translate" (action)="openEdit()" iconAction="fas-edit">
-        </core-context-menu-item>
-        <core-context-menu-item [hidden]="!event || !event.candelete || event.deleted" [priority]="200"
-            [content]="'core.delete' | translate" (action)="deleteEvent()"
-            iconAction="fas-trash"></core-context-menu-item>
-        <core-context-menu-item [hidden]="!event || !event.deleted" [priority]="200" [content]="'core.restore' | translate"
-            (action)="undoDelete()" iconAction="fas-undo-alt"></core-context-menu-item>
-    </core-context-menu>
-</core-navbar-buttons>
 <ion-content>
     <ion-refresher slot="fixed" [disabled]="!eventLoaded" (ionRefresh)="doRefresh($event.target)">
         <ion-refresher-content pullingText="{{ 'core.pulltorefresh' | translate }}"></ion-refresher-content>
@@ -50,33 +47,13 @@
 
         <ion-card>
             <ion-card-content *ngIf="event">
-                <ion-item class="ion-text-wrap" *ngIf="isSplitViewOn">
-                    <img *ngIf="event.moduleIcon" src="{{event.moduleIcon}}" slot="start" alt="" role="presentation"
-                        class="core-module-icon">
-                    <ion-icon *ngIf="event.eventIcon && !event.moduleIcon" [name]="event.eventIcon" slot="start" aria-hidden="true">
-                    </ion-icon>
-                    <ion-label>
-                        <span class="sr-only">
-                            {{ 'addon.calendar.type' + event.formattedType | translate }}
-                            <span class="sr-only" *ngIf="event.moduleIcon && event.iconTitle">{{ event.iconTitle }}</span>
-                        </span>
-                        <h2>{{ 'addon.calendar.eventname' | translate }}</h2>
-                        <p>
-                            <core-format-text [text]="event.name" [contextLevel]="event.contextLevel"
-                                [contextInstanceId]="event.contextInstanceId"></core-format-text>
-                        </p>
-                    </ion-label>
-                    <ion-note slot="end" *ngIf="event.deleted">
-                        <ion-icon name="fas-trash" aria-hidden="true"></ion-icon> {{ 'core.deletedoffline' | translate }}
-                    </ion-note>
-                </ion-item>
                 <ion-item>
                     <ion-label>
                         <h2>{{ 'addon.calendar.when' | translate }}</h2>
                         <core-format-text [text]="event.formattedtime" [contextLevel]="event.contextLevel"
                         [contextInstanceId]="event.contextInstanceId"></core-format-text>
                     </ion-label>
-                    <ion-note slot="end" *ngIf="!isSplitViewOn && event.deleted">
+                    <ion-note slot="end" *ngIf="event.deleted">
                         <ion-icon name="fas-trash" aria-hidden="true"></ion-icon> {{ 'core.deletedoffline' | translate }}
                     </ion-note>
                 </ion-item>

src/addons/calendar/pages/event/event.page.ts

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { Component, OnDestroy, OnInit, Optional } from '@angular/core';
+import { Component, OnDestroy, OnInit } from '@angular/core';
 import { IonRefresher } from '@ionic/angular';
 import { AlertOptions } from '@ionic/core';
 import {
@@ -32,14 +32,12 @@ import { CoreLocalNotifications } from '@services/local-notifications';
 import { CoreCourse } from '@features/course/services/course';
 import { CoreTimeUtils } from '@services/utils/time';
 import { CoreGroups } from '@services/groups';
-import { CoreSplitViewComponent } from '@components/split-view/split-view';
 import { Network, NgZone, Translate } from '@singletons';
 import { Subscription } from 'rxjs';
 import { CoreNavigator } from '@services/navigator';
 import { CoreUtils } from '@services/utils/utils';
 import { AddonCalendarReminderDBRecord } from '../../services/database/calendar';
 import { ActivatedRoute } from '@angular/router';
-import { CoreScreen } from '@services/screen';
 import { CoreConstants } from '@/core/constants';
 import { CoreLang } from '@services/lang';
 
@@ -81,18 +79,15 @@ export class AddonCalendarEventPage implements OnInit, OnDestroy {
     hasOffline = false;
     isOnline = false;
     syncIcon = CoreConstants.ICON_LOADING; // Sync icon.
-    isSplitViewOn = false;
     monthNames?: string[];
 
     constructor(
-        @Optional() protected svComponent: CoreSplitViewComponent,
         protected route: ActivatedRoute,
     ) {
 
         this.notificationsEnabled = CoreLocalNotifications.isAvailable();
         this.siteHomeId = CoreSites.getCurrentSiteHomeId();
         this.currentSiteId = CoreSites.getCurrentSiteId();
-        this.isSplitViewOn = this.svComponent?.outletActivated;
 
         // Check if site supports editing. No need to check allowed types, event.canedit already does it.
         this.canEdit = AddonCalendar.canEditEventsInSite();
@@ -147,7 +142,16 @@ export class AddonCalendarEventPage implements OnInit, OnDestroy {
      * View loaded.
      */
     ngOnInit(): void {
-        this.eventId = CoreNavigator.getRouteNumberParam('id')!;
+        try {
+            this.eventId = CoreNavigator.getRequiredRouteNumberParam('id');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
+
         this.syncIcon = CoreConstants.ICON_LOADING;
 
         this.fetchEvent();
@@ -471,9 +475,7 @@ export class AddonCalendarEventPage implements OnInit, OnDestroy {
                 CoreDomUtils.showToast('addon.calendar.eventcalendareventdeleted', true, 3000);
 
                 // Event deleted, close the view.
-                if (CoreScreen.isMobile) {
+                CoreNavigator.back();
-                    CoreNavigator.back();
-                }
             } else {
                 // Event deleted in offline, just mark it as deleted.
                 this.event.deleted = true;
@@ -528,9 +530,7 @@ export class AddonCalendarEventPage implements OnInit, OnDestroy {
             CoreDomUtils.showToast('addon.calendar.eventcalendareventdeleted', true, 3000);
 
             // Event was deleted, close the view.
-            if (CoreScreen.isMobile) {
+            CoreNavigator.back();
-                CoreNavigator.back();
-            }
         } else if (data.events && (!isManual || data.source != 'event')) {
             const event = data.events.find((ev) => ev.id == this.eventId);
 

src/addons/competency/pages/competency/competency.ts

@@ -60,11 +60,19 @@ export class AddonCompetencyCompetencyPage implements OnInit {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.competencyId = CoreNavigator.getRouteNumberParam('competencyId')!;
+        try {
-        this.planId = CoreNavigator.getRouteNumberParam('planId');
+            this.competencyId = CoreNavigator.getRequiredRouteNumberParam('competencyId');
-        if (!this.planId) {
+            this.planId = CoreNavigator.getRouteNumberParam('planId');
-            this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            if (!this.planId) {
-            this.userId = CoreNavigator.getRouteNumberParam('userId');
+                this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+                this.userId = CoreNavigator.getRouteNumberParam('userId');
+            }
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
         }
 
         try {

src/addons/competency/pages/competencysummary/competencysummary.ts

@@ -40,9 +40,17 @@ export class AddonCompetencyCompetencySummaryPage implements OnInit {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.competencyId = CoreNavigator.getRouteNumberParam('competencyId')!;
+        try {
-        this.contextLevel = CoreNavigator.getRouteParam<ContextLevel>('contextLevel');
+            this.competencyId = CoreNavigator.getRequiredRouteNumberParam('competencyId');
-        this.contextInstanceId = CoreNavigator.getRouteNumberParam('contextInstanceId');
+            this.contextLevel = CoreNavigator.getRouteParam<ContextLevel>('contextLevel');
+            this.contextInstanceId = CoreNavigator.getRouteNumberParam('contextInstanceId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         try {
             await this.fetchCompetency();

src/addons/competency/pages/coursecompetencies/coursecompetencies.page.ts

@@ -42,8 +42,16 @@ export class AddonCompetencyCourseCompetenciesPage implements OnInit {
      * View loaded.
      */
     ngOnInit(): void {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.userId = CoreNavigator.getRouteNumberParam('userId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.userId = CoreNavigator.getRequiredRouteNumberParam('userId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.fetchCourseCompetencies().finally(() => {
             this.competenciesLoaded = true;

src/addons/competency/pages/plan/plan.ts

@@ -39,7 +39,15 @@ export class AddonCompetencyPlanPage implements OnInit {
      * @inheritdoc
      */
     ngOnInit(): void {
-        this.planId = CoreNavigator.getRouteNumberParam('planId')!;
+        try {
+            this.planId = CoreNavigator.getRequiredRouteNumberParam('planId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.fetchLearningPlan().finally(() => {
             this.loaded = true;

src/addons/coursecompletion/pages/report/report.ts

@@ -44,11 +44,15 @@ export class AddonCourseCompletionReportPage implements OnInit {
      * @inheritdoc
      */
     ngOnInit(): void {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.userId = CoreNavigator.getRouteNumberParam('userId') || CoreSites.getCurrentSiteUserId();
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.userId = CoreNavigator.getRouteNumberParam('userId') || CoreSites.getCurrentSiteUserId();
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
 
-        if (!this.userId) {
+            CoreNavigator.back();
-            this.userId = CoreSites.getCurrentSiteUserId();
+
+            return;
         }
 
         this.fetchCompletion().finally(() => {

src/addons/messages/services/handlers/user-send-message.ts

@@ -54,7 +54,7 @@ export class AddonMessagesSendMessageUserHandlerService implements CoreUserProfi
      * @return Promise resolved with true if enabled, resolved with false otherwise.
      */
     async isEnabledForUser(user: CoreUserProfile): Promise<boolean> {
-        const currentSite = CoreSites.getCurrentSite()!;
+        const currentSite = CoreSites.getRequiredCurrentSite();
 
         // From 3.7 you can send messages to yourself.
         return user.id != CoreSites.getCurrentSiteUserId() || currentSite.isVersionGreaterEqualThan('3.7');

src/addons/mod/assign/pages/edit/edit.ts

@@ -78,9 +78,17 @@ export class AddonModAssignEditPage implements OnInit, OnDestroy, CanLeave {
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.moduleId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.moduleId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.isBlind = !!CoreNavigator.getRouteNumberParam('blindId');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.isBlind = !!CoreNavigator.getRouteNumberParam('blindId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.fetchAssignment().finally(() => {
             this.loaded = true;

src/addons/mod/assign/pages/submission-list/submission-list.page.ts

@@ -120,10 +120,18 @@ export class AddonModAssignSubmissionListPage implements AfterViewInit, OnDestro
      * Component being initialized.
      */
     ngAfterViewInit(): void {
-        this.moduleId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.moduleId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.groupId = CoreNavigator.getRouteNumberParam('groupId') || 0;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.selectedStatus = CoreNavigator.getRouteParam('status');
+            this.groupId = CoreNavigator.getRouteNumberParam('groupId') || 0;
+            this.selectedStatus = CoreNavigator.getRouteParam('status');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         if (this.selectedStatus) {
             if (this.selectedStatus == AddonModAssignProvider.NEED_GRADING) {

src/addons/mod/assign/pages/submission-review/submission-review.ts

@@ -55,10 +55,18 @@ export class AddonModAssignSubmissionReviewPage implements OnInit, CanLeave {
      */
     ngOnInit(): void {
         this.route.queryParams.subscribe((params) => {
-            this.moduleId = CoreNavigator.getRouteNumberParam('cmId')!;
+            try {
-            this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+                this.moduleId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-            this.submitId = CoreNavigator.getRouteNumberParam('submitId') || 0;
+                this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-            this.blindId = CoreNavigator.getRouteNumberParam('blindId', { params });
+                this.submitId = CoreNavigator.getRouteNumberParam('submitId') || 0;
+                this.blindId = CoreNavigator.getRouteNumberParam('blindId', { params });
+            } catch (error) {
+                CoreDomUtils.showErrorModal(error);
+
+                CoreNavigator.back();
+
+                return;
+            }
 
             this.fetchSubmission().finally(() => {
                 this.loaded = true;

src/addons/mod/assign/services/handlers/module.ts

@@ -14,23 +14,22 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
 import { AddonModAssignIndexComponent } from '../../components/index';
 import { makeSingleton } from '@singletons';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 
 /**
  * Handler to support assign modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModAssignModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModAssignModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_assign';
 
     name = 'AddonModAssign';
     modName = 'assign';
+    protected pageName = AddonModAssignModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -48,42 +47,7 @@ export class AddonModAssignModuleHandlerService implements CoreCourseModuleHandl
     };
 
     /**
-     * Check if the handler is enabled on a site level.
+     * @inheritdoc
-     *
-     * @return Whether or not the handler is enabled on a site level.
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * Get the data required to display the module in the course contents view.
-     *
-     * @param module The module object.
-     * @return Data to render the module.
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_assign-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModAssignModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
-    /**
-     * Get the component to render the module. This is needed to support singleactivity course format.
-     * The component returned must implement CoreCourseModuleMainComponent.
-     *
-     * @return The component to use, undefined if not found.
      */
     async getMainComponent(): Promise<Type<unknown> | undefined> {
         return AddonModAssignIndexComponent;

src/addons/mod/book/services/book.ts

@@ -134,7 +134,7 @@ export class AddonModBookProvider {
 
         if (!CoreFile.isAvailable()) {
             // We return the live URL.
-            return CoreSites.getCurrentSite()!.checkAndFixPluginfileURL(indexUrl);
+            return CoreSites.getRequiredCurrentSite().checkAndFixPluginfileURL(indexUrl);
         }
 
         const siteId = CoreSites.getCurrentSiteId();

src/addons/mod/book/services/handlers/module.ts

@@ -15,23 +15,22 @@
 import { Injectable, Type } from '@angular/core';
 import { AddonModBookIndexComponent } from '../../components/index';
 import { AddonModBook } from '../book';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
-import { CoreCourseModule } from '@features/course/services/course-helper';
 import { CoreConstants } from '@/core/constants';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
 import { makeSingleton } from '@singletons';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 
 /**
  * Handler to support book modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModBookModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModBookModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_book';
 
     name = 'AddonModBook';
     modName = 'book';
+    protected pageName = AddonModBookModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_MOD_ARCHETYPE]: CoreConstants.MOD_ARCHETYPE_RESOURCE,
@@ -46,45 +45,14 @@ export class AddonModBookModuleHandlerService implements CoreCourseModuleHandler
     };
 
     /**
-     * Check if the handler is enabled on a site level.
+     * @inheritdoc
-     *
-     * @return Whether or not the handler is enabled on a site level.
      */
     isEnabled(): Promise<boolean> {
         return AddonModBook.isPluginEnabled();
     }
 
     /**
-     * Get the data required to display the module in the course contents view.
+     * @inheritdoc
-     *
-     * @param module The module object.
-     * @param courseId The course ID.
-     * @param sectionId The section ID.
-     * @return Data to render the module.
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_book-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModBookModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
-    /**
-     * Get the component to render the module. This is needed to support singleactivity course format.
-     * The component returned must implement CoreCourseModuleMainComponent.
-     * It's recommended to return the class of the component, but you can also return an instance of the component.
-     *
-     * @return The component (or promise resolved with component) to use, undefined if not found.
      */
     async getMainComponent(): Promise<Type<unknown> | undefined> {
         return AddonModBookIndexComponent;

src/addons/mod/chat/pages/chat/chat.ts

@@ -78,12 +78,12 @@ export class AddonModChatChatPage implements OnInit, OnDestroy, CanLeave {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
-        this.chatId = CoreNavigator.getRouteNumberParam('chatId')!;
-        this.title = CoreNavigator.getRouteParam('title') || '';
-
         try {
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
+            this.chatId = CoreNavigator.getRequiredRouteNumberParam('chatId');
+            this.title = CoreNavigator.getRouteParam('title') || '';
+
             await this.loginUser();
 
             await this.fetchMessages();

src/addons/mod/chat/pages/session-messages/session-messages.ts

@@ -47,12 +47,20 @@ export class AddonModChatSessionMessagesPage implements OnInit {
      * @inheritdoc
      */
     ngOnInit(): void {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.sessionStart = CoreNavigator.getRouteNumberParam('sessionStart')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.sessionEnd = CoreNavigator.getRouteNumberParam('sessionEnd')!;
+            this.sessionStart = CoreNavigator.getRequiredRouteNumberParam('sessionStart');
-        this.chatId = CoreNavigator.getRouteNumberParam('chatId')!;
+            this.sessionEnd = CoreNavigator.getRequiredRouteNumberParam('sessionEnd');
-        this.groupId = CoreNavigator.getRouteNumberParam('groupId') || 0;
+            this.chatId = CoreNavigator.getRequiredRouteNumberParam('chatId');
+            this.groupId = CoreNavigator.getRouteNumberParam('groupId') || 0;
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.currentUserId = CoreSites.getCurrentSiteUserId();
 

src/addons/mod/chat/pages/sessions/sessions.ts

@@ -53,10 +53,18 @@ export class AddonModChatSessionsPage implements AfterViewInit, OnDestroy {
      * @inheritdoc
      */
     async ngAfterViewInit(): Promise<void> {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.chatId = CoreNavigator.getRouteNumberParam('chatId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.sessions.setChatId(this.chatId);
+            this.chatId = CoreNavigator.getRequiredRouteNumberParam('chatId');
+            this.sessions.setChatId(this.chatId);
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         await this.fetchSessions();
 

src/addons/mod/chat/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModChatIndexComponent } from '../../components/index';
 
@@ -25,12 +23,13 @@ import { AddonModChatIndexComponent } from '../../components/index';
  * Handler to support chat modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModChatModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModChatModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_chat';
 
     name = 'AddonModChat';
     modName = 'chat';
+    protected pageName = AddonModChatModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -43,35 +42,6 @@ export class AddonModChatModuleHandlerService implements CoreCourseModuleHandler
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        const data: CoreCourseModuleHandlerData = {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_chat-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModChatModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-
-        return data;
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/choice/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModChoiceIndexComponent } from '../../components/index';
 
@@ -25,12 +23,13 @@ import { AddonModChoiceIndexComponent } from '../../components/index';
  * Handler to support choice modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModChoiceModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModChoiceModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_choice';
 
     name = 'AddonModChoice';
     modName = 'choice';
+    protected pageName = AddonModChoiceModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -44,33 +43,6 @@ export class AddonModChoiceModuleHandlerService implements CoreCourseModuleHandl
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_choice-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModChoiceModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/data/components/field-plugin/field-plugin.ts

@@ -53,7 +53,7 @@ export class AddonModDataFieldPluginComponent implements OnInit, OnChanges {
             return;
         }
 
-        try{
+        try {
             // Check if the plugin has defined its own component to render itself.
             this.fieldComponent = await AddonModDataFieldsDelegate.getComponentForField(this.field);
 

src/addons/mod/data/pages/edit/edit.ts

@@ -96,10 +96,18 @@ export class AddonModDataEditPage implements OnInit {
      * @inheritdoc
      */
     ngOnInit(): void {
-        this.module = CoreNavigator.getRouteParam<CoreCourseModule>('module')!;
+        try {
-        this.entryId = CoreNavigator.getRouteNumberParam('entryId') || undefined;
+            this.module = CoreNavigator.getRequiredRouteParam<CoreCourseModule>('module');
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.entryId = CoreNavigator.getRouteNumberParam('entryId') || undefined;
-        this.selectedGroup = CoreNavigator.getRouteNumberParam('group') || 0;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.selectedGroup = CoreNavigator.getRouteNumberParam('group') || 0;
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         // If entryId is lower than 0 or null, it is a new entry or an offline entry.
         this.isEditing = typeof this.entryId != 'undefined' && this.entryId > 0;

src/addons/mod/data/pages/entry/entry.ts

@@ -132,11 +132,20 @@ export class AddonModDataEntryPage implements OnInit, OnDestroy {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.module = CoreNavigator.getRouteParam<CoreCourseModule>('module')!;
+        try {
-        this.entryId = CoreNavigator.getRouteNumberParam('entryId') || undefined;
+            this.module = CoreNavigator.getRequiredRouteParam<CoreCourseModule>('module');
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.entryId = CoreNavigator.getRouteNumberParam('entryId') || undefined;
-        this.selectedGroup = CoreNavigator.getRouteNumberParam('group') || 0;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.offset = CoreNavigator.getRouteNumberParam('offset');
+            this.selectedGroup = CoreNavigator.getRouteNumberParam('group') || 0;
+            this.offset = CoreNavigator.getRouteNumberParam('offset');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
+
         this.title = this.module.name;
 
         this.commentsEnabled = !CoreComments.areCommentsDisabledInSite();

src/addons/mod/data/services/data-helper.ts

@@ -225,7 +225,7 @@ export class AddonModDataHelperProvider {
                 let render = '';
                 if (action == AddonModDataAction.MOREURL) {
                     // Render more url directly because it can be part of an HTML attribute.
-                    render = CoreSites.getCurrentSite()!.getURL() + '/mod/data/view.php?d={{database.id}}&rid=' + entry.id;
+                    render = CoreSites.getRequiredCurrentSite().getURL() + '/mod/data/view.php?d={{database.id}}&rid=' + entry.id;
                 } else if (action == 'approvalstatus') {
                     render = Translate.instant('addon.mod_data.' + (entry.approved ? 'approved' : 'notapproved'));
                 } else {

src/addons/mod/data/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModDataIndexComponent } from '../../components/index';
 
@@ -25,12 +23,13 @@ import { AddonModDataIndexComponent } from '../../components/index';
  * Handler to support data modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModDataModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModDataModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_data';
 
     name = 'AddonModData';
     modName = 'data';
+    protected pageName = AddonModDataModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -46,33 +45,6 @@ export class AddonModDataModuleHandlerService implements CoreCourseModuleHandler
         [CoreConstants.FEATURE_COMMENT]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_data-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModDataModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/feedback/pages/attempt/attempt.ts

@@ -49,9 +49,17 @@ export class AddonModFeedbackAttemptPage implements OnInit {
      * @inheritdoc
      */
     ngOnInit(): void {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.attemptId = CoreNavigator.getRouteNumberParam('attemptId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.attemptId = CoreNavigator.getRequiredRouteNumberParam('attemptId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.fetchData();
     }

src/addons/mod/feedback/pages/form/form.ts

@@ -77,7 +77,7 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
     completedOffline = false;
 
     constructor() {
-        this.currentSite = CoreSites.getCurrentSite()!;
+        this.currentSite = CoreSites.getRequiredCurrentSite();
 
         // Refresh online status when changes.
         this.onlineObserver = Network.onChange().subscribe(() => {
@@ -92,12 +92,20 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.currentPage = CoreNavigator.getRouteNumberParam('page');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.title = CoreNavigator.getRouteParam('title');
+            this.currentPage = CoreNavigator.getRouteNumberParam('page');
-        this.preview = !!CoreNavigator.getRouteBooleanParam('preview');
+            this.title = CoreNavigator.getRouteParam('title');
-        this.fromIndex = !!CoreNavigator.getRouteBooleanParam('fromIndex');
+            this.preview = !!CoreNavigator.getRouteBooleanParam('preview');
+            this.fromIndex = !!CoreNavigator.getRouteBooleanParam('fromIndex');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         await this.fetchData();
 

src/addons/mod/feedback/pages/nonrespondents/nonrespondents.ts

@@ -47,9 +47,17 @@ export class AddonModFeedbackNonRespondentsPage implements OnInit {
      * @inheritdoc
      */
     ngOnInit(): void {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.selectedGroup = CoreNavigator.getRouteNumberParam('group') || 0;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.selectedGroup = CoreNavigator.getRouteNumberParam('group') || 0;
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.fetchData();
     }

src/addons/mod/feedback/pages/respondents/respondents.ts

@@ -63,9 +63,17 @@ export class AddonModFeedbackRespondentsPage implements AfterViewInit {
      * @inheritdoc
      */
     async ngAfterViewInit(): Promise<void> {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.selectedGroup = CoreNavigator.getRouteNumberParam('group') || 0;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.selectedGroup = CoreNavigator.getRouteNumberParam('group') || 0;
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         await this.fetchData();
 

src/addons/mod/feedback/services/handlers/module.ts

@@ -14,23 +14,22 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModule } from '@features/course/services/course-helper';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModFeedbackIndexComponent } from '../../components/index';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 
 /**
  * Handler to support feedback modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModFeedbackModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModFeedbackModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_feedback';
 
     name = 'AddonModFeedback';
     modName = 'feedback';
+    protected pageName = AddonModFeedbackModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -44,33 +43,6 @@ export class AddonModFeedbackModuleHandlerService implements CoreCourseModuleHan
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_feedback-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModFeedbackModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/folder/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModFolderIndexComponent } from '../../components/index';
 
@@ -25,12 +23,13 @@ import { AddonModFolderIndexComponent } from '../../components/index';
  * Handler to support folder modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModFolderModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModFolderModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_folder';
 
     name = 'AddonModFolder';
     modName = 'folder';
+    protected pageName = AddonModFolderModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_MOD_ARCHETYPE]: CoreConstants.MOD_ARCHETYPE_RESOURCE,
@@ -44,33 +43,6 @@ export class AddonModFolderModuleHandlerService implements CoreCourseModuleHandl
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_folder-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModFolderModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/forum/components/post-options-menu/post-options-menu.ts

@@ -58,7 +58,7 @@ export class AddonModForumPostOptionsMenuComponent implements OnInit, OnDestroy
         });
 
         if (this.post.id > 0) {
-            const site = CoreSites.getCurrentSite()!;
+            const site = CoreSites.getRequiredCurrentSite();
             this.url = site.createSiteUrl('/mod/forum/discuss.php', { d: this.post.discussionid.toString() }, 'p' + this.post.id);
             this.offlinePost = false;
         } else {

src/addons/mod/forum/pages/discussion/discussion.page.ts

@@ -65,7 +65,7 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
     discussionId!: number;
     forum: Partial<AddonModForumData> = {};
     accessInfo: AddonModForumAccessInformation = {};
-    discussion!: AddonModForumDiscussion;
+    discussion?: AddonModForumDiscussion;
     startingPost?: Post;
     posts!: Post[];
     discussionLoaded = false;
@@ -100,8 +100,8 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
     leavingPage = false;
 
     protected forumId!: number;
-    protected postId!: number;
+    protected postId?: number;
-    protected parent!: number;
+    protected parent?: number;
     protected onlineObserver?: Subscription;
     protected syncObserver?: CoreEventObserver;
     protected syncManualObserver?: CoreEventObserver;
@@ -122,16 +122,25 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
     }
 
     ngOnInit(): void {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.forumId = CoreNavigator.getRouteNumberParam('forumId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.discussion = CoreNavigator.getRouteParam<AddonModForumDiscussion>('discussion')!;
+            this.forumId = CoreNavigator.getRequiredRouteNumberParam('forumId');
-        this.discussionId = this.discussion
+            this.discussion = CoreNavigator.getRouteParam<AddonModForumDiscussion>('discussion');
-            ? this.discussion.discussion
+            this.discussionId = this.discussion
-            : CoreNavigator.getRouteNumberParam('discussionId')!;
+                ? this.discussion.discussion
-        this.trackPosts = CoreNavigator.getRouteBooleanParam('trackPosts')!;
+                : CoreNavigator.getRequiredRouteNumberParam('discussionId');
-        this.postId = CoreNavigator.getRouteNumberParam('postId')!;
+            this.trackPosts = CoreNavigator.getRouteBooleanParam('trackPosts') || false;
-        this.parent = CoreNavigator.getRouteNumberParam('parent')!;
+            this.postId = CoreNavigator.getRouteNumberParam('postId');
+            this.parent = CoreNavigator.getRouteNumberParam('parent');
+
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            this.goBack();
+
+            return;
+        }
 
         this.isOnline = CoreApp.isOnline();
         this.onlineObserver = Network.onChange().subscribe(() => {
@@ -148,11 +157,9 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
      * View loaded.
      */
     async ngAfterViewInit(): Promise<void> {
-        if (this.parent) {
+        this.sort = this.parent
-            this.sort = 'nested'; // Force nested order.
+            ? 'nested' // Force nested order.
-        } else {
+            : await this.getUserSort();
-            this.sort = await this.getUserSort();
-        }
 
         await this.fetchPosts(true, false, true);
 
@@ -183,6 +190,16 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
             await this.loadDiscussion(this.forumId, this.cmId, this.discussionId);
         }
 
+        if (!this.discussion) {
+            CoreDomUtils.showErrorModal('Cannot get the discussion');
+
+            this.goBack();
+
+            return;
+        }
+
+        const discussion = this.discussion;
+
         // Refresh data if this discussion is synchronized automatically.
         this.syncObserver = CoreEvents.on(AddonModForumSyncProvider.AUTO_SYNCED, data => {
             if (data.forumId == this.forumId && this.discussionId == data.discussionId
@@ -204,7 +221,7 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
         }, CoreSites.getCurrentSiteId());
 
         // Invalidate discussion list if it was not read.
-        if (this.discussion.numunread > 0) {
+        if (discussion.numunread > 0) {
             AddonModForum.invalidateDiscussionsList(this.forumId);
         }
 
@@ -227,22 +244,18 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
             if ((this.forumId && this.forumId === data.forumId) || data.cmId === this.cmId) {
                 AddonModForum.invalidateDiscussionsList(this.forumId).finally(() => {
                     if (typeof data.locked != 'undefined') {
-                        this.discussion.locked = data.locked;
+                        discussion.locked = data.locked;
                     }
                     if (typeof data.pinned != 'undefined') {
-                        this.discussion.pinned = data.pinned;
+                        discussion.pinned = data.pinned;
                     }
                     if (typeof data.starred != 'undefined') {
-                        this.discussion.starred = data.starred;
+                        discussion.starred = data.starred;
                     }
 
                     if (typeof data.deleted != 'undefined' && data.deleted) {
                         if (!data.post?.parentid) {
-                            if (this.splitView?.outletActivated) {
+                            this.goBack();
-                                CoreNavigator.navigate('../');
-                            } else {
-                                CoreNavigator.back();
-                            }
                         } else {
                             this.discussionLoaded = false;
                             this.refreshPosts();
@@ -272,6 +285,17 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
         return true;
     }
 
+    /**
+     * Helper function to go back.
+     */
+    protected goBack(): void {
+        if (this.splitView?.outletActivated) {
+            CoreNavigator.navigate('../');
+        } else {
+            CoreNavigator.back();
+        }
+    }
+
     /**
      * Runs when the page is about to leave and no longer be the active page.
      */
@@ -298,7 +322,7 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
      */
     protected async getUserSort(): Promise<SortType> {
         try {
-            const value = await CoreSites.getCurrentSite()!.getLocalSiteConfig<SortType>('AddonModForumDiscussionSort');
+            const value = await CoreSites.getRequiredCurrentSite().getLocalSiteConfig<SortType>('AddonModForumDiscussionSort');
 
             return value;
         } catch (error) {
@@ -515,7 +539,7 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
             this.syncIcon = CoreConstants.ICON_SYNC;
 
             if (forceMarkAsRead || (hasUnreadPosts && this.trackPosts)) {
-                // // Add log in Moodle and mark unread posts as readed.
+                // Add log in Moodle and mark unread posts as readed.
                 AddonModForum.logDiscussionView(this.discussionId, this.forumId || -1, this.forum.name).catch(() => {
                     // Ignore errors.
                 }).finally(() => {
@@ -543,14 +567,8 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
             return;
         }
 
-        try {
+        this.discussion = await AddonModForumHelper.getDiscussionById(forumId, cmId, discussionId);
-            const discussion = await AddonModForumHelper.getDiscussionById(forumId, cmId, discussionId);
+        this.discussionId = this.discussion.discussion;
-
-            this.discussion = discussion;
-            this.discussionId = this.discussion.discussion;
-        } catch (error) {
-            // Ignore errors.
-        }
     }
 
     /**
@@ -630,7 +648,7 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
      * @param showErrors Whether to show errors in a modal.
      * @return Promise resolved when done.
      */
-    refreshPosts(sync?: boolean, showErrors?: boolean): Promise<void> {
+    async refreshPosts(sync?: boolean, showErrors?: boolean): Promise<void> {
         this.content.scrollToTop();
         this.refreshIcon = CoreConstants.ICON_LOADING;
         this.syncIcon = CoreConstants.ICON_LOADING;
@@ -642,9 +660,9 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
             AddonModForum.invalidateCanAddDiscussion(this.forumId),
         ];
 
-        return CoreUtils.allPromises(promises).catch(() => {
+        await CoreUtils.ignoreErrors(CoreUtils.allPromises(promises));
-            // Ignore errors.
+
-        }).then(() => this.fetchPosts(sync, showErrors));
+        await this.fetchPosts(sync, showErrors);
     }
 
     /**
@@ -656,7 +674,7 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
     changeSort(type: SortType): Promise<void> {
         this.discussionLoaded = false;
         this.sort = type;
-        CoreSites.getCurrentSite()!.setLocalSiteConfig('AddonModForumDiscussionSort', this.sort);
+        CoreSites.getRequiredCurrentSite().setLocalSiteConfig('AddonModForumDiscussionSort', this.sort);
         this.content.scrollToTop();
 
         return this.fetchPosts();
@@ -668,6 +686,10 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
      * @param locked True to lock the discussion, false to unlock.
      */
     async setLockState(locked: boolean): Promise<void> {
+        if (!this.discussion) {
+            return;
+        }
+
         const modal = await CoreDomUtils.showModalLoading('core.sending', true);
 
         try {
@@ -696,6 +718,10 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
      * @param pinned True to pin the discussion, false to unpin it.
      */
     async setPinState(pinned: boolean): Promise<void> {
+        if (!this.discussion) {
+            return;
+        }
+
         const modal = await CoreDomUtils.showModalLoading('core.sending', true);
 
         try {
@@ -725,6 +751,10 @@ export class AddonModForumDiscussionPage implements OnInit, AfterViewInit, OnDes
      * @param starred True to star the discussion, false to unstar it.
      */
     async toggleFavouriteState(starred: boolean): Promise<void> {
+        if (!this.discussion) {
+            return;
+        }
+
         const modal = await CoreDomUtils.showModalLoading('core.sending', true);
 
         try {

src/addons/mod/forum/pages/new-discussion/new-discussion.page.ts

@@ -103,10 +103,18 @@ export class AddonModForumNewDiscussionPage implements OnInit, OnDestroy, CanLea
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.forumId = CoreNavigator.getRouteNumberParam('forumId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.timeCreated = CoreNavigator.getRouteNumberParam('timeCreated')!;
+            this.forumId = CoreNavigator.getRequiredRouteNumberParam('forumId');
+            this.timeCreated = CoreNavigator.getRequiredRouteNumberParam('timeCreated');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            this.goBack();
+
+            return;
+        }
 
         this.fetchDiscussionData().finally(() => {
             this.groupsLoaded = true;
@@ -595,6 +603,17 @@ export class AddonModForumNewDiscussionPage implements OnInit, OnDestroy, CanLea
         delete this.syncObserver;
     }
 
+    /**
+     * Helper function to go back.
+     */
+    protected goBack(): void {
+        if (this.splitView?.outletActivated) {
+            CoreNavigator.navigate('../../');
+        } else {
+            CoreNavigator.back();
+        }
+    }
+
     /**
      * Page destroyed.
      */

src/addons/mod/forum/services/handlers/module.ts

@@ -14,9 +14,7 @@
 
 import { Injectable, Type } from '@angular/core';
 import { AddonModForum, AddonModForumProvider } from '../forum';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreCourseAnyModuleData } from '@features/course/services/course';
-import { CoreCourseModule } from '@features/course/services/course-helper';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton, Translate } from '@singletons';
 import { CoreEvents } from '@singletons/events';
 import { CoreSites } from '@services/sites';
@@ -24,17 +22,19 @@ import { CoreUtils } from '@services/utils/utils';
 import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
 import { CoreConstants } from '@/core/constants';
 import { AddonModForumIndexComponent } from '../../components/index';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 
 /**
  * Handler to support forum modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModForumModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModForumModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_forum';
 
     name = 'AddonModForum';
     modName = 'forum';
+    protected pageName = AddonModForumModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -51,39 +51,10 @@ export class AddonModForumModuleHandlerService implements CoreCourseModuleHandle
     };
 
     /**
-     * Check if the handler is enabled on a site level.
+     * @inheritdoc
-     *
-     * @return Whether or not the handler is enabled on a site level.
-     */
-    isEnabled(): Promise<boolean> {
-        return Promise.resolve(true);
-    }
-
-    /**
-     * Get the data required to display the module in the course contents view.
-     *
-     * @param module The module object.
-     * @param courseId The course ID.
-     * @param sectionId The section ID.
-     * @return Data to render the module.
      */
     getData(module: CoreCourseAnyModuleData, courseId: number): CoreCourseModuleHandlerData {
-        const data: CoreCourseModuleHandlerData = {
+        const data = super.getData(module, courseId);
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_forum-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-
-                CoreNavigator.navigateToSitePath(
-                    `${AddonModForumModuleHandlerService.PAGE_NAME}/${courseId}/${module.id}`,
-                    options,
-                );
-            },
-        };
 
         if ('afterlink' in module && !!module.afterlink) {
             data.extraBadgeColor = '';
@@ -111,20 +82,14 @@ export class AddonModForumModuleHandlerService implements CoreCourseModuleHandle
     }
 
     /**
-     * Get the component to render the module. This is needed to support singleactivity course format.
+     * @inheritdoc
-     * The component returned must implement CoreCourseModuleMainComponent.
-     *
-     * @return The component to use, undefined if not found.
      */
     async getMainComponent(): Promise<Type<unknown> | undefined> {
         return AddonModForumIndexComponent;
     }
 
     /**
-     * Whether to display the course refresher in single activity course format. If it returns false, a refresher must be
+     * @inheritdoc
-     * included in the template that calls the doRefresh method of the component. Defaults to true.
-     *
-     * @return Whether the refresher should be displayed.
      */
     displayRefresherInSingleActivity(): boolean {
         return false;
@@ -161,7 +126,7 @@ export class AddonModForumModuleHandlerService implements CoreCourseModuleHandle
                     { $a : forum.unreadpostscount },
                 )
                 : '';
-        } catch (error) {
+        } catch {
             // Ignore errors.
             data.extraBadgeColor = '';
             data.extraBadge = '';

src/addons/mod/glossary/pages/edit/edit.ts

@@ -73,7 +73,7 @@ export class AddonModGlossaryEditPage implements OnInit, CanLeave {
     };
 
     protected timecreated!: number;
-    protected concept?: string;
+    protected concept = '';
     protected syncId?: string;
     protected syncObserver?: CoreEventObserver;
     protected isDestroyed = false;
@@ -86,11 +86,19 @@ export class AddonModGlossaryEditPage implements OnInit, CanLeave {
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.timecreated = CoreNavigator.getRouteNumberParam('timecreated')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.concept = CoreNavigator.getRouteParam<string>('concept')!;
+            this.timecreated = CoreNavigator.getRequiredRouteNumberParam('timecreated');
-        this.editorExtraParams.timecreated = this.timecreated;
+            this.concept = CoreNavigator.getRouteParam<string>('concept') || '';
+            this.editorExtraParams.timecreated = this.timecreated;
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            this.goBack();
+
+            return;
+        }
 
         this.fetchData();
     }
@@ -116,7 +124,7 @@ export class AddonModGlossaryEditPage implements OnInit, CanLeave {
         } catch (error) {
             CoreDomUtils.showErrorModalDefault(error, 'addon.mod_glossary.errorloadingglossary', true);
 
-            CoreNavigator.back();
+            this.goBack();
         }
     }
 
@@ -126,7 +134,7 @@ export class AddonModGlossaryEditPage implements OnInit, CanLeave {
      * @return Promise resolved when done.
      */
     protected async loadOfflineData(): Promise<void> {
-        const entry = await AddonModGlossaryOffline.getNewEntry(this.glossary!.id, this.concept || '', this.timecreated);
+        const entry = await AddonModGlossaryOffline.getNewEntry(this.glossary!.id, this.concept, this.timecreated);
 
         this.entry.concept = entry.concept || '';
         this.entry.definition = entry.definition || '';
@@ -367,4 +375,15 @@ export class AddonModGlossaryEditPage implements OnInit, CanLeave {
         }
     }
 
+    /**
+     * Helper function to go back.
+     */
+    protected goBack(): void {
+        if (this.splitView?.outletActivated) {
+            CoreNavigator.navigate('../../');
+        } else {
+            CoreNavigator.back();
+        }
+    }
+
 }

src/addons/mod/glossary/pages/entry/entry.ts

@@ -57,10 +57,18 @@ export class AddonModGlossaryEntryPage implements OnInit {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.entryId = CoreNavigator.getRouteNumberParam('entryId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.tagsEnabled = CoreTag.areTagsAvailableInSite();
+            this.entryId = CoreNavigator.getRequiredRouteNumberParam('entryId');
-        this.commentsEnabled = !CoreComments.areCommentsDisabledInSite();
+            this.tagsEnabled = CoreTag.areTagsAvailableInSite();
+            this.commentsEnabled = !CoreComments.areCommentsDisabledInSite();
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         try {
             await this.fetchEntry();

src/addons/mod/glossary/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModGlossaryIndexComponent } from '../../components/index/index';
 
@@ -25,12 +23,13 @@ import { AddonModGlossaryIndexComponent } from '../../components/index/index';
  * Handler to support glossary modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModGlossaryModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModGlossaryModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_glossary';
 
     name = 'AddonModGlossary';
     modName = 'glossary';
+    protected pageName = AddonModGlossaryModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: false,
@@ -46,33 +45,6 @@ export class AddonModGlossaryModuleHandlerService implements CoreCourseModuleHan
         [CoreConstants.FEATURE_PLAGIARISM]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_glossary-handler',
-            showDownloadButton: true,
-            action: (event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions) => {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModGlossaryModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/h5pactivity/components/index/index.ts

@@ -96,7 +96,7 @@ export class AddonModH5PActivityIndexComponent extends CoreCourseModuleMainActiv
     ) {
         super('AddonModH5PActivityIndexComponent', content, courseContentsPage);
 
-        this.site = CoreSites.getCurrentSite()!;
+        this.site = CoreSites.getRequiredCurrentSite();
         this.siteCanDownload = this.site.canDownloadFiles() && !CoreH5P.isOfflineDisabledInSite();
 
         // Listen for messages from the iframe.

src/addons/mod/h5pactivity/pages/attempt-results/attempt-results.ts

@@ -50,9 +50,17 @@ export class AddonModH5PActivityAttemptResultsPage implements OnInit {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.attemptId = CoreNavigator.getRouteNumberParam('attemptId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
+            this.attemptId = CoreNavigator.getRequiredRouteNumberParam('attemptId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         try {
             await this.fetchData();

src/addons/mod/h5pactivity/pages/user-attempts/user-attempts.ts

@@ -51,9 +51,18 @@ export class AddonModH5PActivityUserAttemptsPage implements OnInit {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.userId = CoreNavigator.getRouteNumberParam('userId') || CoreSites.getCurrentSiteUserId();
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
+            this.userId = CoreNavigator.getRouteNumberParam('userId') || CoreSites.getCurrentSiteUserId();
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
+
         this.isCurrentUser = this.userId == CoreSites.getCurrentSiteUserId();
 
         try {

src/addons/mod/h5pactivity/pages/users-attempts/users-attempts.ts

@@ -49,8 +49,16 @@ export class AddonModH5PActivityUsersAttemptsPage implements OnInit {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         try {
             await this.fetchData();

src/addons/mod/h5pactivity/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModH5PActivityIndexComponent } from '../../components/index';
 import { AddonModH5PActivity } from '../h5pactivity';
@@ -26,12 +24,13 @@ import { AddonModH5PActivity } from '../h5pactivity';
  * Handler to support H5P activities.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModH5PActivityModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModH5PActivityModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_h5pactivity';
 
     name = 'AddonModH5PActivity';
     modName = 'h5pactivity';
+    protected pageName = AddonModH5PActivityModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -52,27 +51,6 @@ export class AddonModH5PActivityModuleHandlerService implements CoreCourseModule
         return AddonModH5PActivity.isPluginEnabled();
     }
 
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_h5pactivity-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions) {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModH5PActivityModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/imscp/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModImscpIndexComponent } from '../../components/index';
 import { AddonModImscp } from '../imscp';
@@ -26,12 +24,13 @@ import { AddonModImscp } from '../imscp';
  * Handler to support IMSCP modules.
  */
 @Injectable( { providedIn: 'root' })
-export class AddonModImscpModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModImscpModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_imscp';
 
     name = 'AddonModImscp';
     modName = 'imscp';
+    protected pageName = AddonModImscpModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_MOD_ARCHETYPE]: CoreConstants.MOD_ARCHETYPE_RESOURCE,
@@ -55,27 +54,7 @@ export class AddonModImscpModuleHandlerService implements CoreCourseModuleHandle
     /**
      * @inheritdoc
      */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
+    async getMainComponent(): Promise<Type<unknown>> {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_imscp-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModImscpModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
-    /**
-     * @inheritdoc
-     */
-    async getMainComponent(): Promise<Type<unknown> | undefined> {
         return AddonModImscpIndexComponent;
     }
 

src/addons/mod/label/services/handlers/module.ts

@@ -14,6 +14,7 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable } from '@angular/core';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 import { CoreCourseWSModule } from '@features/course/services/course';
 import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
 import { makeSingleton } from '@singletons';
@@ -22,7 +23,7 @@ import { makeSingleton } from '@singletons';
  * Handler to support label modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModLabelModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModLabelModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     name = 'AddonModLabel';
     modName = 'label';
@@ -40,13 +41,6 @@ export class AddonModLabelModuleHandlerService implements CoreCourseModuleHandle
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
     /**
      * @inheritdoc
      */
@@ -57,7 +51,7 @@ export class AddonModLabelModuleHandlerService implements CoreCourseModuleHandle
 
         return {
             icon: '',
-            title: title,
+            title,
             a11yTitle: '',
             class: 'addon-mod-label-handler',
         };

src/addons/mod/lesson/pages/player/player.page.ts

@@ -119,12 +119,20 @@ export class AddonModLessonPlayerPage implements OnInit, OnDestroy, CanLeave {
      * Component being initialized.
      */
     async ngOnInit(): Promise<void> {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.password = CoreNavigator.getRouteParam('password');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.review = !!CoreNavigator.getRouteBooleanParam('review');
+            this.password = CoreNavigator.getRouteParam('password');
-        this.currentPage = CoreNavigator.getRouteNumberParam('pageId');
+            this.review = !!CoreNavigator.getRouteBooleanParam('review');
-        this.retakeToReview = CoreNavigator.getRouteNumberParam('retake');
+            this.currentPage = CoreNavigator.getRouteNumberParam('pageId');
+            this.retakeToReview = CoreNavigator.getRouteNumberParam('retake');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         try {
             // Fetch the Lesson data.

src/addons/mod/lesson/pages/user-retake/user-retake.page.ts

@@ -64,10 +64,18 @@ export class AddonModLessonUserRetakePage implements OnInit {
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.userId = CoreNavigator.getRouteNumberParam('userId') || CoreSites.getCurrentSiteUserId();
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.retakeNumber = CoreNavigator.getRouteNumberParam('retake');
+            this.userId = CoreNavigator.getRouteNumberParam('userId') || CoreSites.getCurrentSiteUserId();
+            this.retakeNumber = CoreNavigator.getRouteNumberParam('retake');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         // Fetch the data.
         this.fetchData().finally(() => {

src/addons/mod/lesson/services/handlers/module.ts

@@ -15,24 +15,22 @@
 import { Injectable, Type } from '@angular/core';
 
 import { CoreConstants } from '@/core/constants';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourse, CoreCourseAnyModuleData, CoreCourseWSModule } from '@features/course/services/course';
-import { CoreCourseModule } from '@features/course/services/course-helper';
 import { AddonModLessonIndexComponent } from '../../components/index';
-import { CoreCourseAnyCourseData } from '@features/courses/services/courses';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 
 /**
- * Handler to support quiz modules.
+ * Handler to support lesson modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModLessonModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModLessonModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_lesson';
 
     name = 'AddonModLesson';
     modName = 'lesson';
+    protected pageName = AddonModLessonModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -47,55 +45,9 @@ export class AddonModLessonModuleHandlerService implements CoreCourseModuleHandl
     };
 
     /**
-     * Check if the handler is enabled on a site level.
+     * @inheritdoc
-     *
-     * @return Promise resolved with boolean: whether or not the handler is enabled on a site level.
      */
-    async isEnabled(): Promise<boolean> {
+    async getMainComponent(): Promise<Type<unknown>> {
-        return true;
-    }
-
-    /**
-     * Get the data required to display the module in the course contents view.
-     *
-     * @param module The module object.
-     * @param courseId The course ID.
-     * @param sectionId The section ID.
-     * @param forCoursePage Whether the data will be used to render the course page.
-     * @return Data to render the module.
-     */
-    getData(
-        module: CoreCourseAnyModuleData,
-        courseId: number, // eslint-disable-line @typescript-eslint/no-unused-vars
-        sectionId: number, // eslint-disable-line @typescript-eslint/no-unused-vars
-        forCoursePage?: boolean, // eslint-disable-line @typescript-eslint/no-unused-vars
-    ): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_lesson-handler',
-            showDownloadButton: true,
-            action: (event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions) => {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModLessonModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
-    /**
-     * Get the component to render the module. This is needed to support singleactivity course format.
-     * The component returned must implement CoreCourseModuleMainComponent.
-     *
-     * @param course The course object.
-     * @param module The module object.
-     * @return The component to use, undefined if not found.
-     */
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    async getMainComponent(course: CoreCourseAnyCourseData, module: CoreCourseWSModule): Promise<Type<unknown> | undefined> {
         return AddonModLessonIndexComponent;
     }
 

src/addons/mod/lti/services/handlers/module.ts

@@ -16,28 +16,29 @@ import { Injectable, Type } from '@angular/core';
 
 import { CoreConstants } from '@/core/constants';
 import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreCourseAnyModuleData } from '@features/course/services/course';
 import { CoreCourseModule } from '@features/course/services/course-helper';
 import { CoreApp } from '@services/app';
 import { CoreFilepool } from '@services/filepool';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { CoreSites } from '@services/sites';
 import { CoreUtils } from '@services/utils/utils';
 import { DomSanitizer, makeSingleton } from '@singletons';
 import { AddonModLtiHelper } from '../lti-helper';
 import { AddonModLti, AddonModLtiProvider } from '../lti';
 import { AddonModLtiIndexComponent } from '../../components/index';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 
 /**
  * Handler to support LTI modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModLtiModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModLtiModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_lti';
 
     name = 'AddonModLti';
     modName = 'lti';
+    protected pageName = AddonModLtiModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: false,
@@ -50,42 +51,26 @@ export class AddonModLtiModuleHandlerService implements CoreCourseModuleHandler
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
     /**
      * @inheritdoc
      */
     getData(
         module: CoreCourseAnyModuleData,
         courseId: number,
+        sectionId?: number,
+        forCoursePage?: boolean,
     ): CoreCourseModuleHandlerData {
+        const data = super.getData(module, courseId, sectionId, forCoursePage);
+        data.showDownloadButton = false;
 
-        const data: CoreCourseModuleHandlerData = {
+        data.buttons = [{
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
+            icon: 'fas-external-link-alt',
-            title: module.name,
+            label: 'addon.mod_lti.launchactivity',
-            class: 'addon-mod_lti-handler',
+            action: (event: Event, module: CoreCourseModule, courseId: number): void => {
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
+                // Launch the LTI.
-                options = options || {};
+                AddonModLtiHelper.getDataAndLaunch(courseId, module);
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModLtiModuleHandlerService.PAGE_NAME + routeParams, options);
             },
-            buttons: [{
+        }];
-                icon: 'fas-external-link-alt',
-                label: 'addon.mod_lti.launchactivity',
-                action: (event: Event, module: CoreCourseModule, courseId: number): void => {
-                    // Launch the LTI.
-                    AddonModLtiHelper.getDataAndLaunch(courseId, module);
-                },
-            }],
-        };
 
         // Handle custom icons.
         CoreUtils.ignoreErrors(this.loadCustomIcon(module, courseId, data));
@@ -133,7 +118,7 @@ export class AddonModLtiModuleHandlerService implements CoreCourseModuleHandler
     /**
      * @inheritdoc
      */
-    async getMainComponent(): Promise<Type<unknown> | undefined> {
+    async getMainComponent(): Promise<Type<unknown>> {
         return AddonModLtiIndexComponent;
     }
 

src/addons/mod/page/services/handlers/module.ts

@@ -14,24 +14,23 @@
 
 import { Injectable, Type } from '@angular/core';
 import { AddonModPage } from '../page';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
 import { CoreConstants } from '@/core/constants';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
-import { CoreCourseModule } from '@features/course/services/course-helper';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { AddonModPageIndexComponent } from '../../components/index';
 import { makeSingleton } from '@singletons';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 
 /**
  * Handler to support page modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModPageModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModPageModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_page';
 
     name = 'AddonModPage';
     modName = 'page';
+    protected pageName = AddonModPageModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_MOD_ARCHETYPE]: CoreConstants.MOD_ARCHETYPE_RESOURCE,
@@ -46,46 +45,16 @@ export class AddonModPageModuleHandlerService implements CoreCourseModuleHandler
     };
 
     /**
-     * Check if the handler is enabled on a site level.
+     * @inheritdoc
-     *
-     * @return Whether or not the handler is enabled on a site level.
      */
     isEnabled(): Promise<boolean> {
         return AddonModPage.isPluginEnabled();
     }
 
     /**
-     * Get the data required to display the module in the course contents view.
+     * @inheritdoc
-     *
-     * @param module The module object.
-     * @return Data to render the module.
      */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
+    async getMainComponent(): Promise<Type<unknown>> {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_page-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModPageModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
-    /**
-     * Get the component to render the module. This is needed to support singleactivity course format.
-     * The component returned must implement CoreCourseModuleMainComponent.
-     *
-     * @param course The course object.
-     * @param module The module object.
-     * @return The component to use, undefined if not found.
-     */
-    async getMainComponent(): Promise<Type<unknown> | undefined> {
         return AddonModPageIndexComponent;
     }
 

src/addons/mod/quiz/pages/attempt/attempt.page.ts

@@ -52,9 +52,17 @@ export class AddonModQuizAttemptPage implements OnInit {
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.attemptId = CoreNavigator.getRouteNumberParam('attemptId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.attemptId = CoreNavigator.getRequiredRouteNumberParam('attemptId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.fetchQuizData().finally(() => {
             this.loaded = true;

src/addons/mod/quiz/pages/player/player.page.ts

@@ -106,9 +106,17 @@ export class AddonModQuizPlayerPage implements OnInit, OnDestroy, CanLeave {
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.moduleUrl = CoreNavigator.getRouteParam('moduleUrl');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.moduleUrl = CoreNavigator.getRouteParam('moduleUrl');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         // Create the auto save instance.
         this.autoSave = new AddonModQuizAutoSave(

src/addons/mod/quiz/pages/review/review.page.ts

@@ -83,11 +83,19 @@ export class AddonModQuizReviewPage implements OnInit {
      * Component being initialized.
      */
     async ngOnInit(): Promise<void> {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.attemptId = CoreNavigator.getRouteNumberParam('attemptId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.currentPage = CoreNavigator.getRouteNumberParam('page') || -1;
+            this.attemptId = CoreNavigator.getRequiredRouteNumberParam('attemptId');
-        this.showAll = this.currentPage == -1;
+            this.currentPage = CoreNavigator.getRouteNumberParam('page') || -1;
+            this.showAll = this.currentPage == -1;
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         try {
             await this.fetchData();

src/addons/mod/quiz/services/handlers/module.ts

@@ -15,23 +15,22 @@
 import { Injectable, Type } from '@angular/core';
 
 import { CoreConstants } from '@/core/constants';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
-import { CoreCourseModule } from '@features/course/services/course-helper';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { AddonModQuizIndexComponent } from '../../components/index';
 import { makeSingleton } from '@singletons';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 
 /**
  * Handler to support quiz modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModQuizModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModQuizModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_quiz';
 
     name = 'AddonModQuiz';
     modName = 'quiz';
+    protected pageName = AddonModQuizModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -48,46 +47,7 @@ export class AddonModQuizModuleHandlerService implements CoreCourseModuleHandler
     };
 
     /**
-     * Check if the handler is enabled on a site level.
+     * @inheritdoc
-     *
-     * @return Whether or not the handler is enabled on a site level.
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * Get the data required to display the module in the course contents view.
-     *
-     * @param module The module object.
-     * @param courseId The course ID.
-     * @param sectionId The section ID.
-     * @return Data to render the module.
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_quiz-handler',
-            showDownloadButton: true,
-            action: (event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions) => {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModQuizModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
-    /**
-     * Get the component to render the module. This is needed to support singleactivity course format.
-     * The component returned must implement CoreCourseModuleMainComponent.
-     *
-     * @param course The course object.
-     * @param module The module object.
-     * @return The component to use, undefined if not found.
      */
     async getMainComponent(): Promise<Type<unknown>> {
         return AddonModQuizIndexComponent;

src/addons/mod/resource/services/handlers/module.ts

@@ -14,12 +14,12 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 import { CoreCourse, CoreCourseAnyModuleData, CoreCourseModuleContentFile } from '@features/course/services/course';
 import { CoreCourseModule } from '@features/course/services/course-helper';
 import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
 import { CoreCourseModulePrefetchDelegate } from '@features/course/services/module-prefetch-delegate';
 import { CoreFileHelper } from '@services/file-helper';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { CoreMimetypeUtils } from '@services/utils/mimetype';
 import { CoreTextUtils } from '@services/utils/text';
 import { CoreTimeUtils } from '@services/utils/time';
@@ -33,12 +33,13 @@ import { AddonModResourceHelper } from '../resource-helper';
  * Handler to support resource modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModResourceModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModResourceModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_resource';
 
     name = 'AddonModResource';
     modName = 'resource';
+    protected pageName = AddonModResourceModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_MOD_ARCHETYPE]: CoreConstants.MOD_ARCHETYPE_RESOURCE,
@@ -60,46 +61,37 @@ export class AddonModResourceModuleHandlerService implements CoreCourseModuleHan
     }
 
     /**
-     * Get the data required to display the module in the course contents view.
+     * @inheritdoc
-     *
-     * @param module The module object.
-     * @param courseId The course ID.
-     * @param sectionId The section ID.
-     * @return Data to render the module.
      */
-    getData(module: CoreCourseAnyModuleData, courseId: number): CoreCourseModuleHandlerData {
+    getData(
+        module: CoreCourseAnyModuleData,
+        courseId: number,
+        sectionId?: number,
+        forCoursePage?: boolean,
+    ): CoreCourseModuleHandlerData {
         const updateStatus = (status: string): void => {
-            handlerData.buttons![0].hidden = status !== CoreConstants.DOWNLOADED ||
+            if (!handlerData.buttons) {
+                return;
+            }
+
+            handlerData.buttons[0].hidden = status !== CoreConstants.DOWNLOADED ||
                 AddonModResourceHelper.isDisplayedInIframe(module);
         };
         const openWithPicker = CoreFileHelper.defaultIsOpenWithPicker();
 
-        const handlerData: CoreCourseModuleHandlerData = {
+        const handlerData = super.getData(module, courseId, sectionId, forCoursePage);
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
+        handlerData.updateStatus = updateStatus.bind(this);
-            title: module.name,
+        handlerData.buttons = [{
-            class: 'addon-mod_resource-handler',
+            hidden: true,
-            showDownloadButton: true,
+            icon: openWithPicker ? 'fas-share-square' : 'fas-file',
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
+            label: module.name + ': ' + Translate.instant(openWithPicker ? 'core.openwith' : 'addon.mod_resource.openthefile'),
-                options = options || {};
+            action: async (event: Event, module: CoreCourseModule, courseId: number): Promise<void> => {
-                options.params = options.params || {};
+                const hide = await this.hideOpenButton(module, courseId);
-                Object.assign(options.params, { module });
+                if (!hide) {
-                const routeParams = '/' + courseId + '/' + module.id;
+                    AddonModResourceHelper.openModuleFile(module, courseId);
-
+                }
-                CoreNavigator.navigateToSitePath(AddonModResourceModuleHandlerService.PAGE_NAME + routeParams, options);
             },
-            updateStatus: updateStatus.bind(this),
+        }];
-            buttons: [{
-                hidden: true,
-                icon: openWithPicker ? 'fas-share-square' : 'fas-file',
-                label: module.name + ': ' + Translate.instant(openWithPicker ? 'core.openwith' : 'addon.mod_resource.openthefile'),
-                action: async (event: Event, module: CoreCourseModule, courseId: number): Promise<void> => {
-                    const hide = await this.hideOpenButton(module, courseId);
-                    if (!hide) {
-                        AddonModResourceHelper.openModuleFile(module, courseId);
-                    }
-                },
-            }],
-        };
 
         this.getResourceData(module, courseId, handlerData).then((data) => {
             handlerData.icon = data.icon;
@@ -149,7 +141,11 @@ export class AddonModResourceModuleHandlerService implements CoreCourseModuleHan
 
         // Check if the button needs to be shown or not.
         promises.push(this.hideOpenButton(module, courseId).then((hideOpenButton) => {
-            handlerData.buttons![0].hidden = hideOpenButton;
+            if (!handlerData.buttons) {
+                return;
+            }
+
+            handlerData.buttons[0].hidden = hideOpenButton;
 
             return;
         }));
@@ -237,7 +233,7 @@ export class AddonModResourceModuleHandlerService implements CoreCourseModuleHan
 
         // No previously set, just set the icon.
         if (resourceData.icon == '') {
-            resourceData.icon = CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined);
+            resourceData.icon = CoreCourse.getModuleIconSrc(module.modname, 'modicon' in module ? module.modicon : undefined);
         }
 
         return resourceData;
@@ -246,7 +242,7 @@ export class AddonModResourceModuleHandlerService implements CoreCourseModuleHan
     /**
      * @inheritdoc
      */
-    async getMainComponent(): Promise<Type<unknown> | undefined> {
+    async getMainComponent(): Promise<Type<unknown>> {
         return AddonModResourceIndexComponent;
     }
 

src/addons/mod/resource/services/resource-helper.ts

@@ -83,7 +83,7 @@ export class AddonModResourceHelperProvider {
             // Error getting directory, there was an error downloading or we're in browser. Return online URL.
             if (CoreApp.isOnline() && mainFile.fileurl) {
                 // This URL is going to be injected in an iframe, we need this to make it work.
-                return CoreSites.getCurrentSite()!.checkAndFixPluginfileURL(mainFile.fileurl);
+                return CoreSites.getRequiredCurrentSite().checkAndFixPluginfileURL(mainFile.fileurl);
             }
 
             throw e;

src/addons/mod/scorm/pages/player/player.ts

@@ -88,14 +88,22 @@ export class AddonModScormPlayerPage implements OnInit, OnDestroy {
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        this.cmId = CoreNavigator.getRouteNumberParam('cmId')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
-        this.mode = CoreNavigator.getRouteParam('mode') || AddonModScormProvider.MODENORMAL;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.moduleUrl = CoreNavigator.getRouteParam('moduleUrl') || '';
+            this.mode = CoreNavigator.getRouteParam('mode') || AddonModScormProvider.MODENORMAL;
-        this.newAttempt = !!CoreNavigator.getRouteBooleanParam('newAttempt');
+            this.moduleUrl = CoreNavigator.getRouteParam('moduleUrl') || '';
-        this.organizationId = CoreNavigator.getRouteParam('organizationId');
+            this.newAttempt = !!CoreNavigator.getRouteBooleanParam('newAttempt');
-        this.initialScoId = CoreNavigator.getRouteNumberParam('scoId');
+            this.organizationId = CoreNavigator.getRouteParam('organizationId');
-        this.siteId = CoreSites.getCurrentSiteId();
+            this.initialScoId = CoreNavigator.getRouteNumberParam('scoId');
+            this.siteId = CoreSites.getCurrentSiteId();
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         try {
             // Fetch the SCORM data.

src/addons/mod/scorm/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModScormIndexComponent } from '../../components/index';
 
@@ -25,12 +23,13 @@ import { AddonModScormIndexComponent } from '../../components/index';
  * Handler to support SCORM modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModScormModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModScormModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_scorm';
 
     name = 'AddonModScorm';
     modName = 'scorm';
+    protected pageName = AddonModScormModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -44,33 +43,6 @@ export class AddonModScormModuleHandlerService implements CoreCourseModuleHandle
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_scorm-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions) {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModScormModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/scorm/services/scorm-offline.ts

@@ -730,7 +730,7 @@ export class AddonModScormOfflineProvider {
         }
 
         const scoUserData = scoData?.userdata || {};
-        const db = CoreSites.getCurrentSite()!.getDb();
+        const db = CoreSites.getRequiredCurrentSite().getDb();
         let lessonStatusInserted = false;
 
         if (forceCompleted) {

src/addons/mod/survey/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModSurveyIndexComponent } from '../../components/index';
 
@@ -25,12 +23,13 @@ import { AddonModSurveyIndexComponent } from '../../components/index';
  * Handler to support survey modules.
  */
 @Injectable( { providedIn: 'root' })
-export class AddonModSurveyModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModSurveyModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_survey';
 
     name = 'AddonModSurvey';
     modName = 'survey';
+    protected pageName = AddonModSurveyModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -44,35 +43,6 @@ export class AddonModSurveyModuleHandlerService implements CoreCourseModuleHandl
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(
-        module: CoreCourseAnyModuleData,
-    ): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_survey-handler',
-            showDownloadButton: true,
-            action: (event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions) => {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModSurveyModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/url/services/handlers/module.ts

@@ -15,6 +15,7 @@
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
 import { CoreContentLinksHelper } from '@features/contentlinks/services/contentlinks-helper';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
 import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
 import { CoreCourseModule } from '@features/course/services/course-helper';
 import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
@@ -30,12 +31,13 @@ import { AddonModUrlHelper } from '../url-helper';
  * Handler to support url modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModUrlModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModUrlModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_url';
 
     name = 'AddonModUrl';
     modName = 'url';
+    protected pageName = AddonModUrlModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_MOD_ARCHETYPE]: CoreConstants.MOD_ARCHETYPE_RESOURCE,
@@ -49,13 +51,6 @@ export class AddonModUrlModuleHandlerService implements CoreCourseModuleHandler
         [CoreConstants.FEATURE_SHOW_DESCRIPTION]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
     /**
      * @inheritdoc
      */
@@ -82,7 +77,7 @@ export class AddonModUrlModuleHandlerService implements CoreCourseModuleHandler
         };
 
         const handlerData: CoreCourseModuleHandlerData = {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
+            icon: CoreCourse.getModuleIconSrc(module.modname, 'modicon' in module ? module.modicon : undefined),
             title: module.name,
             class: 'addon-mod_url-handler',
             showDownloadButton: false,
@@ -117,12 +112,16 @@ export class AddonModUrlModuleHandlerService implements CoreCourseModuleHandler
         };
 
         this.hideLinkButton(module, courseId).then((hideButton) => {
-            handlerData.buttons![0]!.hidden = hideButton;
+            if (!handlerData.buttons) {
+                return;
+            }
+
+            handlerData.buttons[0].hidden = hideButton;
 
             if (module.contents && module.contents[0]) {
                 // Calculate the icon to use.
                 handlerData.icon = AddonModUrl.guessIcon(module.contents[0].fileurl) ||
-                    CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined);
+                    CoreCourse.getModuleIconSrc(module.modname, 'modicon' in module ? module.modicon : undefined);
             }
 
             return;
@@ -154,7 +153,7 @@ export class AddonModUrlModuleHandlerService implements CoreCourseModuleHandler
     /**
      * @inheritdoc
      */
-    async getMainComponent(): Promise<Type<unknown> | undefined> {
+    async getMainComponent(): Promise<Type<unknown>> {
         return AddonModUrlIndexComponent;
     }
 
@@ -165,7 +164,7 @@ export class AddonModUrlModuleHandlerService implements CoreCourseModuleHandler
      * @param courseId Course ID.
      * @return Promise resolved with boolean.
      */
-    protected async shouldOpenLink(module: CoreCourseModule, courseId: number): Promise<boolean> {
+    protected async shouldOpenLink(module: CoreCourseModule, courseId?: number): Promise<boolean> {
         try {
             const contents = await CoreCourse.getModuleContents(module, courseId, undefined, false, false, undefined, this.modName);
 
@@ -177,7 +176,7 @@ export class AddonModUrlModuleHandlerService implements CoreCourseModuleHandler
                 return true;
             } else {
                 // Not handled by the app, check the display type.
-                const url = await CoreUtils.ignoreErrors(AddonModUrl.getUrl(courseId, module.id));
+                const url = courseId ? await CoreUtils.ignoreErrors(AddonModUrl.getUrl(courseId, module.id)) : undefined;
                 const displayType = AddonModUrl.getFinalDisplayType(url);
 
                 return displayType == CoreConstants.RESOURCELIB_DISPLAY_OPEN ||
@@ -192,7 +191,7 @@ export class AddonModUrlModuleHandlerService implements CoreCourseModuleHandler
      * @inheritdoc
      */
     manualCompletionAlwaysShown(module: CoreCourseModule): Promise<boolean> {
-        return this.shouldOpenLink(module, module.course!);
+        return this.shouldOpenLink(module, module.course);
     }
 
 }

src/addons/mod/wiki/components/index/index.ts

@@ -664,7 +664,7 @@ export class AddonModWikiIndexComponent extends CoreCourseModuleMainActivityComp
         content = content.trim();
 
         if (content.length > 0) {
-            const editUrl = CoreTextUtils.concatenatePaths(CoreSites.getCurrentSite()!.getURL(), '/mod/wiki/edit.php');
+            const editUrl = CoreTextUtils.concatenatePaths(CoreSites.getRequiredCurrentSite().getURL(), '/mod/wiki/edit.php');
             content = content.replace(/href="edit\.php/g, 'href="' + editUrl);
         }
 

src/addons/mod/wiki/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModWikiIndexComponent } from '../../components/index';
 
@@ -25,12 +23,13 @@ import { AddonModWikiIndexComponent } from '../../components/index';
  * Handler to support wiki modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModWikiModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModWikiModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_wiki';
 
     name = 'AddonModWiki';
     modName = 'wiki';
+    protected pageName = AddonModWikiModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -45,33 +44,6 @@ export class AddonModWikiModuleHandlerService implements CoreCourseModuleHandler
         [CoreConstants.FEATURE_COMMENT]: true,
     };
 
-    /**
-     * @inheritdoc
-     */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_wiki-handler',
-            showDownloadButton: true,
-            action: (event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions) => {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = `/${courseId}/${module.id}/page/root`;
-
-                CoreNavigator.navigateToSitePath(AddonModWikiModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     /**
      * @inheritdoc
      */

src/addons/mod/wiki/wiki-lazy.module.ts

@@ -22,6 +22,10 @@ import { CanLeaveGuard } from '@guards/can-leave';
 import { AddonModWikiEditPage } from './pages/edit/edit';
 
 const routes: Routes = [
+    {
+        path: ':courseId/:cmId',
+        redirectTo: ':courseId/:cmId/page/root',
+    },
     {
         path: ':courseId/:cmId/page/:hash',
         component: AddonModWikiIndexPage,

src/addons/mod/workshop/pages/assessment/assessment.ts

@@ -117,10 +117,18 @@ export class AddonModWorkshopAssessmentPage implements OnInit, OnDestroy, CanLea
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.assessment = CoreNavigator.getRouteParam<AddonModWorkshopSubmissionAssessmentWithFormData>('assessment')!;
+        try {
-        this.submission = CoreNavigator.getRouteParam<AddonModWorkshopSubmissionData>('submission')!;
+            this.assessment = CoreNavigator.getRequiredRouteParam<AddonModWorkshopSubmissionAssessmentWithFormData>('assessment');
-        this.profile = CoreNavigator.getRouteParam<CoreUserProfile>('profile')!;
+            this.submission = CoreNavigator.getRequiredRouteParam<AddonModWorkshopSubmissionData>('submission');
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.profile = CoreNavigator.getRequiredRouteParam<CoreUserProfile>('profile');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.assessmentId = this.assessment.id;
         this.workshopId = this.submission.workshopid;

src/addons/mod/workshop/pages/edit-submission/edit-submission.ts

@@ -99,10 +99,18 @@ export class AddonModWorkshopEditSubmissionPage implements OnInit, OnDestroy, Ca
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.module = CoreNavigator.getRouteParam<CoreCourseModule>('module')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.module = CoreNavigator.getRequiredRouteParam<CoreCourseModule>('module');
-        this.access = CoreNavigator.getRouteParam<AddonModWorkshopGetWorkshopAccessInformationWSResponse>('access')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.submissionId = CoreNavigator.getRouteNumberParam('submissionId') || 0;
+            this.access = CoreNavigator.getRequiredRouteParam<AddonModWorkshopGetWorkshopAccessInformationWSResponse>('access');
+            this.submissionId = CoreNavigator.getRouteNumberParam('submissionId') || 0;
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         if (this.submissionId > 0) {
             this.editorExtraParams.id = this.submissionId;

src/addons/mod/workshop/pages/submission/submission.ts

@@ -130,15 +130,22 @@ export class AddonModWorkshopSubmissionPage implements OnInit, OnDestroy, CanLea
      * Component being initialized.
      */
     async ngOnInit(): Promise<void> {
+        try {
+            this.submissionId = CoreNavigator.getRequiredRouteNumberParam('submissionId');
+            this.module = CoreNavigator.getRequiredRouteParam<CoreCourseModule>('module');
+            this.workshop = CoreNavigator.getRequiredRouteParam<AddonModWorkshopData>('workshop');
+            this.access = CoreNavigator.getRequiredRouteParam<AddonModWorkshopGetWorkshopAccessInformationWSResponse>('access');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.profile = CoreNavigator.getRouteParam<CoreUserProfile>('profile');
+            this.submissionInfo = CoreNavigator.getRequiredRouteParam<AddonModWorkshopSubmissionDataWithOfflineData>('submission');
+            this.assessment = CoreNavigator.getRouteParam<AddonModWorkshopSubmissionAssessmentWithFormData>('assessment');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
 
-        this.submissionId = CoreNavigator.getRouteNumberParam('submissionId')!;
+            CoreNavigator.back();
-        this.module = CoreNavigator.getRouteParam<CoreCourseModule>('module')!;
+
-        this.workshop = CoreNavigator.getRouteParam<AddonModWorkshopData>('workshop')!;
+            return;
-        this.access = CoreNavigator.getRouteParam<AddonModWorkshopGetWorkshopAccessInformationWSResponse>('access')!;
+        }
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
-        this.profile = CoreNavigator.getRouteParam<CoreUserProfile>('profile');
-        this.submissionInfo = CoreNavigator.getRouteParam<AddonModWorkshopSubmissionDataWithOfflineData>('submission')!;
-        this.assessment = CoreNavigator.getRouteParam<AddonModWorkshopSubmissionAssessmentWithFormData>('assessment');
 
         this.title = this.module.name;
         this.workshopId = this.module.instance || this.workshop.id;

src/addons/mod/workshop/services/handlers/module.ts

@@ -14,10 +14,8 @@
 
 import { CoreConstants } from '@/core/constants';
 import { Injectable, Type } from '@angular/core';
-import { CoreCourse, CoreCourseAnyModuleData } from '@features/course/services/course';
+import { CoreModuleHandlerBase } from '@features/course/classes/module-base-handler';
-import { CoreCourseModule } from '@features/course/services/course-helper';
+import { CoreCourseModuleHandler } from '@features/course/services/module-delegate';
-import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '@features/course/services/module-delegate';
-import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
 import { makeSingleton } from '@singletons';
 import { AddonModWorkshopIndexComponent } from '../../components/index';
 
@@ -25,12 +23,13 @@ import { AddonModWorkshopIndexComponent } from '../../components/index';
  * Handler to support workshop modules.
  */
 @Injectable({ providedIn: 'root' })
-export class AddonModWorkshopModuleHandlerService implements CoreCourseModuleHandler {
+export class AddonModWorkshopModuleHandlerService extends CoreModuleHandlerBase implements CoreCourseModuleHandler {
 
     static readonly PAGE_NAME = 'mod_workshop';
 
     name = 'AddonModWorkshop';
     modName = 'workshop';
+    protected pageName = AddonModWorkshopModuleHandlerService.PAGE_NAME;
 
     supportedFeatures = {
         [CoreConstants.FEATURE_GROUPS]: true,
@@ -46,30 +45,6 @@ export class AddonModWorkshopModuleHandlerService implements CoreCourseModuleHan
     /**
      * @inheritdoc
      */
-    async isEnabled(): Promise<boolean> {
-        return true;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getData(module: CoreCourseAnyModuleData): CoreCourseModuleHandlerData {
-        return {
-            icon: CoreCourse.getModuleIconSrc(this.modName, 'modicon' in module ? module.modicon : undefined),
-            title: module.name,
-            class: 'addon-mod_workshop-handler',
-            showDownloadButton: true,
-            action(event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void {
-                options = options || {};
-                options.params = options.params || {};
-                Object.assign(options.params, { module });
-                const routeParams = '/' + courseId + '/' + module.id;
-
-                CoreNavigator.navigateToSitePath(AddonModWorkshopModuleHandlerService.PAGE_NAME + routeParams, options);
-            },
-        };
-    }
-
     async getMainComponent(): Promise<Type<unknown>> {
         return AddonModWorkshopIndexComponent;
     }

src/addons/notes/pages/list/list.page.ts

@@ -40,7 +40,7 @@ export class AddonNotesListPage implements OnInit, OnDestroy {
 
      @ViewChild(IonContent) content?: IonContent;
 
-    courseId: number;
+    courseId!: number;
     userId?: number;
     type: AddonNotesPublishState = 'course';
     refreshIcon = CoreConstants.ICON_LOADING;
@@ -51,13 +51,21 @@ export class AddonNotesListPage implements OnInit, OnDestroy {
     user?: CoreUserProfile;
     showDelete = false;
     canDeleteNotes = false;
-    currentUserId: number;
+    currentUserId!: number;
 
-    protected syncObserver: CoreEventObserver;
+    protected syncObserver!: CoreEventObserver;
 
     constructor() {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.userId = CoreNavigator.getRouteNumberParam('userId');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.userId = CoreNavigator.getRouteNumberParam('userId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         // Refresh data if notes are synchronized automatically.
         this.syncObserver = CoreEvents.on(AddonNotesSyncProvider.AUTO_SYNCED, (data) => {

src/addons/privatefiles/pages/index/index.ts

@@ -69,19 +69,27 @@ export class AddonPrivateFilesIndexPage implements OnInit, OnDestroy {
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.root = CoreNavigator.getRouteParam('root');
+        try {
-        const contextId = CoreNavigator.getRouteNumberParam('contextid');
+            this.root = CoreNavigator.getRouteParam('root');
+            const contextId = CoreNavigator.getRouteNumberParam('contextid');
 
-        if (contextId) {
+            if (contextId) {
-            // Loading a certain folder.
+                // Loading a certain folder.
-            this.path = {
+                this.path = {
-                contextid: contextId,
+                    contextid: contextId,
-                component: CoreNavigator.getRouteParam<string>('component')!,
+                    component: CoreNavigator.getRequiredRouteParam<string>('component'),
-                filearea: CoreNavigator.getRouteParam<string>('filearea')!,
+                    filearea: CoreNavigator.getRequiredRouteParam<string>('filearea'),
-                itemid: CoreNavigator.getRouteNumberParam('itemid')!,
+                    itemid: CoreNavigator.getRequiredRouteNumberParam('itemid'),
-                filepath: CoreNavigator.getRouteParam<string>('filepath')!,
+                    filepath: CoreNavigator.getRequiredRouteParam<string>('filepath'),
-                filename: CoreNavigator.getRouteParam<string>('filename')!,
+                    filename: CoreNavigator.getRequiredRouteParam<string>('filename'),
-            };
+                };
+            }
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
         }
 
         this.title = this.path?.filename || Translate.instant('addon.privatefiles.files');

src/addons/storagemanager/pages/course-storage/course-storage.ts

@@ -42,7 +42,15 @@ export class AddonStorageManagerCourseStoragePage implements OnInit {
      * View loaded.
      */
     async ngOnInit(): Promise<void> {
-        this.course = CoreNavigator.getRouteParam<CoreEnrolledCourseData>('course')!;
+        try {
+            this.course = CoreNavigator.getRequiredRouteParam<CoreEnrolledCourseData>('course');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.sections = await CoreCourse.getSections(this.course.id, false, true);
         CoreCourseHelper.addHandlerDataForModules(this.sections, this.course.id);

src/core/components/split-view/split-view.ts

@@ -66,14 +66,8 @@ export class CoreSplitViewComponent implements AfterViewInit, OnDestroy {
         this.disableScrollOnParent();
 
         this.subscriptions = [
-            this.contentOutlet.activateEvents.subscribe(() => {
+            this.contentOutlet.activateEvents.subscribe(() => this.updateOutletRoute()),
-                this.updateClasses();
+            this.contentOutlet.deactivateEvents.subscribe(() => this.updateOutletRoute()),
-                this.outletRouteSubject.next(this.contentOutlet.activatedRoute.snapshot);
-            }),
-            this.contentOutlet.deactivateEvents.subscribe(() => {
-                this.updateClasses();
-                this.outletRouteSubject.next(null);
-            }),
             CoreScreen.layoutObservable.subscribe(() => this.updateClasses()),
         ];
 
@@ -89,6 +83,17 @@ export class CoreSplitViewComponent implements AfterViewInit, OnDestroy {
         this.enableScrollOnParent();
     }
 
+    /**
+     * Update outlet status.
+     */
+    private updateOutletRoute(): void {
+        const outletRoute = this.contentOutlet.isActivated ? this.contentOutlet.activatedRoute.snapshot : null;
+
+        this.updateClasses();
+
+        this.outletRouteSubject.next(outletRoute);
+    }
+
     /**
      * Update host classes.
      */

src/core/features/comments/pages/viewer/viewer.page.ts

@@ -110,19 +110,28 @@ export class CoreCommentsViewerPage implements OnInit, OnDestroy {
      * View loaded.
      */
     async ngOnInit(): Promise<void> {
+        try {
+            this.contextLevel = CoreNavigator.getRequiredRouteParam<ContextLevel>('contextLevel');
+            this.instanceId = CoreNavigator.getRequiredRouteNumberParam('instanceId');
+            this.componentName = CoreNavigator.getRequiredRouteParam<string>('componentName');
+            this.itemId = CoreNavigator.getRequiredRouteNumberParam('itemId');
+            this.area = CoreNavigator.getRouteParam('area') || '';
+            this.title = CoreNavigator.getRouteNumberParam('title') ||
+                Translate.instant('core.comments.comments');
+            this.courseId = CoreNavigator.getRouteNumberParam('courseId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
+
         // Is implicit the user can delete if he can add.
         this.addDeleteCommentsAvailable = await CoreComments.isAddCommentsAvailable();
         this.currentUserId = CoreSites.getCurrentSiteUserId();
 
         this.commentsLoaded = false;
-        this.contextLevel = CoreNavigator.getRouteParam<ContextLevel>('contextLevel')!;
-        this.instanceId = CoreNavigator.getRouteNumberParam('instanceId')!;
-        this.componentName = CoreNavigator.getRouteParam<string>('componentName')!;
-        this.itemId = CoreNavigator.getRouteNumberParam('itemId')!;
-        this.area = CoreNavigator.getRouteParam('area') || '';
-        this.title = CoreNavigator.getRouteNumberParam('title') ||
-            Translate.instant('core.comments.comments');
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId');
 
         await this.fetchComments(true);
     }

src/core/features/course/classes/main-activity-page.ts

@@ -14,10 +14,10 @@
 
 import { Component, OnInit } from '@angular/core';
 import { CoreNavigator } from '@services/navigator';
+import { CoreDomUtils } from '@services/utils/dom';
 import { CoreCourseAnyModuleData } from '../services/course';
 import { CoreCourseModuleMainResourceComponent } from './main-resource-component';
 
-/**
 /**
  * Template class to easily create CoreCourseModuleMainComponent of resources (or activities without syncing).
  */
@@ -36,8 +36,17 @@ export class CoreCourseModuleMainActivityPage<ActivityType extends CoreCourseMod
      * Component being initialized.
      */
     ngOnInit(): void {
-        this.module = CoreNavigator.getRouteParam<CoreCourseAnyModuleData>('module')!;
+        try {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+            this.module = CoreNavigator.getRequiredRouteParam<CoreCourseAnyModuleData>('module');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
+
         this.title = this.module?.name;
     }
 

src/core/features/course/classes/module-base-handler.ts

@@ -0,0 +1,59 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
+import { CoreCourse, CoreCourseAnyModuleData } from '../services/course';
+import { CoreCourseModule } from '../services/course-helper';
+import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '../services/module-delegate';
+
+/**
+ * Base module handler to be registered.
+ */
+export class CoreModuleHandlerBase implements Partial<CoreCourseModuleHandler> {
+
+    protected pageName = '';
+
+    /**
+     * @inheritdoc
+     */
+    async isEnabled(): Promise<boolean> {
+        return true;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    getData(
+        module: CoreCourseAnyModuleData,
+        courseId: number, // eslint-disable-line @typescript-eslint/no-unused-vars
+        sectionId?: number, // eslint-disable-line @typescript-eslint/no-unused-vars
+        forCoursePage?: boolean, // eslint-disable-line @typescript-eslint/no-unused-vars
+    ): CoreCourseModuleHandlerData {
+        return {
+            icon: CoreCourse.getModuleIconSrc(module.modname, 'modicon' in module ? module.modicon : undefined),
+            title: module.name,
+            class: 'addon-mod_' + module.modname + '-handler',
+            showDownloadButton: true,
+            action: (event: Event, module: CoreCourseModule, courseId: number, options?: CoreNavigationOptions): void => {
+                options = options || {};
+                options.params = options.params || {};
+                Object.assign(options.params, { module });
+                const routeParams = '/' + courseId + '/' + module.id;
+
+                CoreNavigator.navigateToSitePath(this.pageName + routeParams, options);
+            },
+        };
+    }
+
+}

src/core/features/course/services/course-helper.ts

@@ -78,17 +78,17 @@ export type CoreCourseModulePrefetchInfo = {
     /**
      * Downloaded size.
      */
-    size?: number;
+    size: number;
 
     /**
      * Downloadable size in a readable format.
      */
-    sizeReadable?: string;
+    sizeReadable: string;
 
     /**
      * Module status.
      */
-    status?: string;
+    status: string;
 
     /**
      * Icon's name of the module status.
@@ -98,12 +98,12 @@ export type CoreCourseModulePrefetchInfo = {
     /**
      * Time when the module was last downloaded.
      */
-    downloadTime?: number;
+    downloadTime: number;
 
     /**
      * Download time in a readable format.
      */
-    downloadTimeReadable?: string;
+    downloadTimeReadable: string;
 };
 
 /**
@@ -539,18 +539,14 @@ export class CoreCourseHelperProvider {
             total: true,
         };
 
-        if (!section && !sections) {
-            throw new CoreError('Either section or list of sections needs to be supplied.');
-        }
-
         // Calculate the size of the download.
         if (section && section.id != CoreCourseProvider.ALL_SECTIONS_ID) {
             sizeSum = await CoreCourseModulePrefetchDelegate.getDownloadSize(section.modules, courseId);
 
             // Check if the section has embedded files in the description.
             hasEmbeddedFiles = CoreFilepool.extractDownloadableFilesFromHtml(section.summary).length > 0;
-        } else {
+        } else if (sections) {
-            await Promise.all(sections!.map(async (section) => {
+            await Promise.all(sections.map(async (section) => {
                 if (section.id == CoreCourseProvider.ALL_SECTIONS_ID) {
                     return;
                 }
@@ -565,6 +561,8 @@ export class CoreCourseHelperProvider {
                     hasEmbeddedFiles = true;
                 }
             }));
+        } else {
+            throw new CoreError('Either section or list of sections needs to be supplied.');
         }
 
         if (hasEmbeddedFiles) {
@@ -1057,7 +1055,7 @@ export class CoreCourseHelperProvider {
 
         const moduleInfo = await this.getModulePrefetchInfo(module, courseId, invalidateCache, component);
 
-        instance.size = moduleInfo.size && moduleInfo.size > 0 ? moduleInfo.sizeReadable! : '';
+        instance.size = moduleInfo.sizeReadable;
         instance.prefetchStatusIcon = moduleInfo.statusIcon;
         instance.prefetchStatus = moduleInfo.status;
 
@@ -1443,7 +1441,7 @@ export class CoreCourseHelperProvider {
         invalidateCache?: boolean,
         component?: string,
     ): Promise<CoreCourseModulePrefetchInfo> {
-        const moduleInfo: CoreCourseModulePrefetchInfo = {};
+
         const siteId = CoreSites.getCurrentSiteId();
 
         if (invalidateCache) {
@@ -1459,45 +1457,59 @@ export class CoreCourseHelperProvider {
         ]);
 
         // Treat stored size.
-        moduleInfo.size = results[0];
+        const size = results[0];
-        moduleInfo.sizeReadable = CoreTextUtils.bytesToSize(results[0], 2);
+        const sizeReadable = CoreTextUtils.bytesToSize(results[0], 2);
 
         // Treat module status.
-        moduleInfo.status = results[1];
+        const status = results[1];
+        let statusIcon: string | undefined;
         switch (results[1]) {
             case CoreConstants.NOT_DOWNLOADED:
-                moduleInfo.statusIcon = CoreConstants.ICON_NOT_DOWNLOADED;
+                statusIcon = CoreConstants.ICON_NOT_DOWNLOADED;
                 break;
             case CoreConstants.DOWNLOADING:
-                moduleInfo.statusIcon = CoreConstants.ICON_DOWNLOADING;
+                statusIcon = CoreConstants.ICON_DOWNLOADING;
                 break;
             case CoreConstants.OUTDATED:
-                moduleInfo.statusIcon = CoreConstants.ICON_OUTDATED;
+                statusIcon = CoreConstants.ICON_OUTDATED;
                 break;
             case CoreConstants.DOWNLOADED:
                 break;
             default:
-                moduleInfo.statusIcon = '';
+                statusIcon = '';
                 break;
         }
 
         // Treat download time.
         if (!results[2] || !results[2].downloadTime || !CoreFileHelper.isStateDownloaded(results[2].status || '')) {
             // Not downloaded.
-            moduleInfo.downloadTime = 0;
+            return {
-
+                size,
-            return moduleInfo;
+                sizeReadable,
+                status,
+                statusIcon,
+                downloadTime: 0,
+                downloadTimeReadable: '',
+            };
         }
 
         const now = CoreTimeUtils.timestamp();
-        moduleInfo.downloadTime = results[2].downloadTime;
+        const downloadTime = results[2].downloadTime;
+        let downloadTimeReadable = '';
         if (now - results[2].downloadTime < 7 * 86400) {
-            moduleInfo.downloadTimeReadable = moment(results[2].downloadTime * 1000).fromNow();
+            downloadTimeReadable = moment(results[2].downloadTime * 1000).fromNow();
         } else {
-            moduleInfo.downloadTimeReadable = moment(results[2].downloadTime * 1000).calendar();
+            downloadTimeReadable = moment(results[2].downloadTime * 1000).calendar();
         }
 
-        return moduleInfo;
+        return {
+            size,
+            sizeReadable,
+            status,
+            statusIcon,
+            downloadTime,
+            downloadTimeReadable,
+        };
     }
 
     /**
@@ -1616,7 +1628,7 @@ export class CoreCourseHelperProvider {
 
             this.logger.warn('navCtrl was not passed to navigateToModule by the link handler for ' + module.modname);
 
-            const params = {
+            const params: Params = {
                 course: { id: courseId },
                 module: module,
                 sectionId: sectionId,
@@ -1690,20 +1702,20 @@ export class CoreCourseHelperProvider {
         courseMenuHandlers: CoreCourseOptionsMenuHandlerToDisplay[],
         siteId?: string,
     ): Promise<void> {
-        siteId = siteId || CoreSites.getCurrentSiteId();
+        const requiredSiteId = siteId || CoreSites.getRequiredCurrentSite().getId();
 
-        if (this.courseDwnPromises[siteId] && this.courseDwnPromises[siteId][course.id]) {
+        if (this.courseDwnPromises[requiredSiteId] && this.courseDwnPromises[requiredSiteId][course.id] !== undefined) {
             // There's already a download ongoing for this course, return the promise.
-            return this.courseDwnPromises[siteId][course.id];
+            return this.courseDwnPromises[requiredSiteId][course.id];
-        } else if (!this.courseDwnPromises[siteId]) {
+        } else if (!this.courseDwnPromises[requiredSiteId]) {
-            this.courseDwnPromises[siteId] = {};
+            this.courseDwnPromises[requiredSiteId] = {};
         }
 
         // First of all, mark the course as being downloaded.
-        this.courseDwnPromises[siteId][course.id] = CoreCourse.setCourseStatus(
+        this.courseDwnPromises[requiredSiteId][course.id] = CoreCourse.setCourseStatus(
             course.id,
             CoreConstants.DOWNLOADING,
-            siteId,
+            requiredSiteId,
         ).then(async () => {
 
             const promises: Promise<unknown>[] = [];
@@ -1740,17 +1752,17 @@ export class CoreCourseHelperProvider {
             await CoreUtils.allPromises(promises);
 
             // Download success, mark the course as downloaded.
-            return CoreCourse.setCourseStatus(course.id, CoreConstants.DOWNLOADED, siteId);
+            return CoreCourse.setCourseStatus(course.id, CoreConstants.DOWNLOADED, requiredSiteId);
         }).catch(async (error) => {
             // Error, restore previous status.
-            await CoreCourse.setCoursePreviousStatus(course.id, siteId);
+            await CoreCourse.setCoursePreviousStatus(course.id, requiredSiteId);
 
             throw error;
         }).finally(() => {
-            delete this.courseDwnPromises[siteId!][course.id];
+            delete this.courseDwnPromises[requiredSiteId][course.id];
         });
 
-        return this.courseDwnPromises[siteId][course.id];
+        return this.courseDwnPromises[requiredSiteId][course.id];
     }
 
     /**

src/core/features/course/services/course.ts

@@ -633,9 +633,6 @@ export class CoreCourseProvider {
      * @return The IMG src.
      */
     getModuleIconSrc(moduleName: string, modicon?: string): string {
-        // @TODO: Check modicon url theme to apply other theme icons.
-
-        // Use default icon on core themes.
         if (this.CORE_MODULES.indexOf(moduleName) < 0) {
             if (modicon) {
                 return modicon;
@@ -644,6 +641,7 @@ export class CoreCourseProvider {
             moduleName = 'external-tool';
         }
 
+        // Use default icon on core modules.
         return 'assets/img/mod/' + moduleName + '.svg';
     }
 

src/core/features/course/services/handlers/default-module.ts

@@ -16,8 +16,7 @@ import { Injectable, Type } from '@angular/core';
 
 import { CoreSites } from '@services/sites';
 import { CoreCourseModuleHandler, CoreCourseModuleHandlerData } from '../module-delegate';
-import { CoreCourse, CoreCourseAnyModuleData, CoreCourseWSModule } from '../course';
+import { CoreCourse, CoreCourseAnyModuleData } from '../course';
-import { CoreCourseAnyCourseData } from '@features/courses/services/courses';
 import { CoreCourseModule } from '../course-helper';
 import { CoreCourseUnsupportedModuleComponent } from '@features/course/components/unsupported-module/unsupported-module';
 import { CoreNavigationOptions, CoreNavigator } from '@services/navigator';
@@ -30,29 +29,20 @@ export class CoreCourseModuleDefaultHandler implements CoreCourseModuleHandler {
 
     name = 'CoreCourseModuleDefault';
     modName = 'default';
+    protected pageName = '';
 
     /**
-     * Whether or not the handler is enabled on a site level.
+     * @inheritdoc
-     *
-     * @return True or promise resolved with true if enabled.
      */
     async isEnabled(): Promise<boolean> {
         return true;
     }
 
     /**
-     * Get the data required to display the module in the course contents view.
+     * @inheritdoc
-     *
-     * @param module The module object.
-     * @param courseId The course ID.
-     * @param sectionId The section ID.
-     * @return Data to render the module.
      */
     getData(
         module: CoreCourseAnyModuleData,
-        courseId: number, // eslint-disable-line @typescript-eslint/no-unused-vars
-        sectionId?: number, // eslint-disable-line @typescript-eslint/no-unused-vars
-        forCoursePage?: boolean, // eslint-disable-line @typescript-eslint/no-unused-vars
     ): CoreCourseModuleHandlerData {
         // Return the default data.
         const defaultData: CoreCourseModuleHandlerData = {
@@ -71,6 +61,8 @@ export class CoreCourseModuleDefaultHandler implements CoreCourseModuleHandler {
         };
 
         if ('url' in module && module.url) {
+            const url = module.url;
+
             defaultData.buttons = [{
                 icon: 'fas-external-link-alt',
                 label: 'core.openinbrowser',
@@ -78,7 +70,7 @@ export class CoreCourseModuleDefaultHandler implements CoreCourseModuleHandler {
                     e.preventDefault();
                     e.stopPropagation();
 
-                    CoreSites.getCurrentSite()!.openInBrowserWithAutoLoginIfSameSite(module.url!);
+                    CoreSites.getRequiredCurrentSite().openInBrowserWithAutoLoginIfSameSite(url);
                 },
             }];
         }
@@ -87,24 +79,14 @@ export class CoreCourseModuleDefaultHandler implements CoreCourseModuleHandler {
     }
 
     /**
-     * Get the component to render the module. This is needed to support singleactivity course format.
+     * @inheritdoc
-     * The component returned must implement CoreCourseModuleMainComponent.
-     * It's recommended to return the class of the component, but you can also return an instance of the component.
-     *
-     * @param course The course object.
-     * @param module The module object.
-     * @return The component (or promise resolved with component) to use, undefined if not found.
      */
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    async getMainComponent(): Promise<Type<unknown>> {
-    async getMainComponent(course: CoreCourseAnyCourseData, module: CoreCourseWSModule): Promise<Type<unknown> | undefined> {
         return CoreCourseUnsupportedModuleComponent;
     }
 
     /**
-     * Whether to display the course refresher in single activity course format. If it returns false, a refresher must be
+     * @inheritdoc
-     * included in the template that calls the doRefresh method of the component. Defaults to true.
-     *
-     * @return Whether the refresher should be displayed.
      */
     displayRefresherInSingleActivity(): boolean {
         return true;

src/core/features/course/services/module-delegate.ts

@@ -345,9 +345,10 @@ export class CoreCourseModuleDelegateService extends CoreDelegate<CoreCourseModu
      * @param modicon The mod icon string.
      * @return The icon src.
      */
-    getModuleIconSrc(modname: string, modicon?: string): string | undefined {
+    getModuleIconSrc(modname: string, modicon?: string): string {
         return this.executeFunctionOnEnabled<string>(modname, 'getIconSrc') ||
-            CoreCourse.getModuleIconSrc(modname, modicon);
+            CoreCourse.getModuleIconSrc(modname, modicon) ||
+            '';
     }
 
     /**

src/core/features/courses/pages/categories/categories.ts

@@ -59,7 +59,7 @@ export class CoreCoursesCategoriesPage implements OnInit {
      * @return Promise resolved when done.
      */
     protected async fetchCategories(): Promise<void> {
-        try{
+        try {
             const categories: CoreCategoryData[] = await CoreCourses.getCategories(this.categoryId, true);
 
             this.currentCategory = undefined;

src/core/features/grades/pages/course/course.page.ts

@@ -40,14 +40,26 @@ import { CoreNavigator } from '@services/navigator';
 })
 export class CoreGradesCoursePage implements AfterViewInit, OnDestroy {
 
-    grades: CoreGradesCourseManager;
+    grades!: CoreGradesCourseManager;
     splitViewMode?: CoreSplitViewMode;
 
     @ViewChild(CoreSplitViewComponent) splitView!: CoreSplitViewComponent;
 
     constructor(protected route: ActivatedRoute) {
-        const courseId = CoreNavigator.getRouteNumberParam('courseId', { route })!;
+        let courseId: number;
-        const userId = CoreNavigator.getRouteNumberParam('userId', { route }) ?? CoreSites.getCurrentSiteUserId();
+        let userId: number;
+
+        try {
+            courseId = CoreNavigator.getRequiredRouteNumberParam('courseId', { route });
+            userId = CoreNavigator.getRouteNumberParam('userId', { route }) ?? CoreSites.getCurrentSiteUserId();
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
+
         const useSplitView = route.snapshot.data.useSplitView ?? true;
         const outsideGradesTab = route.snapshot.data.outsideGradesTab ?? false;
 

src/core/features/grades/pages/grade/grade.page.ts

@@ -31,16 +31,24 @@ import { CoreNavigator } from '@services/navigator';
 })
 export class CoreGradesGradePage implements OnInit {
 
-    courseId: number;
+    courseId!: number;
-    userId: number;
+    userId!: number;
-    gradeId: number;
+    gradeId!: number;
     grade?: CoreGradesFormattedRow | null;
     gradeLoaded = false;
 
     constructor() {
-        this.courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        try {
-        this.gradeId = CoreNavigator.getRouteNumberParam('gradeId')!;
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
-        this.userId = CoreNavigator.getRouteNumberParam('userId') ?? CoreSites.getCurrentSiteUserId();
+            this.gradeId = CoreNavigator.getRequiredRouteNumberParam('gradeId');
+            this.userId = CoreNavigator.getRouteNumberParam('userId') ?? CoreSites.getCurrentSiteUserId();
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
     }
 
     /**

src/core/features/login/login.scss

@@ -15,6 +15,11 @@
             color: var(--color);
         }
     }
+
+    form div {
+        color: var(--color);
+    }
+
     ion-button.core-button-as-link {
         --color: var(--core-login-text-color);
         text-decoration-color: var(--core-login-text-color);

src/core/features/login/pages/site/site.ts

@@ -35,7 +35,7 @@ import { CoreTextUtils } from '@services/utils/text';
 import { CoreForms } from '@singletons/form';
 
 /**
- * Page that displays a "splash screen" while the app is being initialized.
+ * Site (url) chooser when adding a new site.
  */
 @Component({
     selector: 'page-core-login-site',

src/core/features/user/pages/participants/participants.page.ts

@@ -33,7 +33,7 @@ import { CoreUtils } from '@services/utils/utils';
 })
 export class CoreUserParticipantsPage implements OnInit, AfterViewInit, OnDestroy {
 
-    participants: CoreUserParticipantsManager;
+    participants!: CoreUserParticipantsManager;
     searchQuery: string | null = null;
     searchInProgress = false;
     searchEnabled = false;
@@ -43,7 +43,17 @@ export class CoreUserParticipantsPage implements OnInit, AfterViewInit, OnDestro
     @ViewChild(CoreSplitViewComponent) splitView!: CoreSplitViewComponent;
 
     constructor() {
-        const courseId = CoreNavigator.getRouteNumberParam('courseId')!;
+        let courseId: number;
+
+        try {
+            courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
 
         this.participants = new CoreUserParticipantsManager(CoreUserParticipantsPage, courseId);
     }

src/core/services/navigator.ts

@@ -30,6 +30,7 @@ import { makeSingleton, NavController, Router } from '@singletons';
 import { CoreScreen } from './screen';
 import { CoreApp } from './app';
 import { CoreSitePlugins } from '@features/siteplugins/services/siteplugins';
+import { CoreError } from '@classes/errors/error';
 
 const DEFAULT_MAIN_MENU_TAB = CoreMainMenuHomeHandlerService.PAGE_NAME;
 
@@ -269,7 +270,7 @@ export class CoreNavigatorService {
 
         const value = route.snapshot.queryParams[name] ?? route.snapshot.params[name];
 
-        if (typeof value != 'undefined') {
+        if (value !== undefined) {
             return value;
         }
 
@@ -300,7 +301,7 @@ export class CoreNavigatorService {
             value = routeOptions.params[name];
         }
 
-        if (typeof value == 'undefined') {
+        if (value === undefined) {
             return;
         }
 
@@ -345,7 +346,7 @@ export class CoreNavigatorService {
     getRouteBooleanParam(name: string, routeOptions: CoreNavigatorCurrentRouteOptions = {}): boolean | undefined {
         const value = this.getRouteParam<string>(name, routeOptions);
 
-        if (typeof value == 'undefined') {
+        if (value === undefined) {
             return value;
         }
 
@@ -360,6 +361,67 @@ export class CoreNavigatorService {
         return Boolean(value);
     }
 
+    /**
+     * Get a parameter for the current route.
+     * Please notice that objects can only be retrieved once. You must call this function only once per page and parameter,
+     * unless there's a new navigation to the page.
+     *
+     * This function will fail if parameter is not found.
+     *
+     * @param name Name of the parameter.
+     * @param routeOptions Optional routeOptions to get the params or route value from. If missing, it will autodetect.
+     * @return Value of the parameter, undefined if not found.
+     */
+    getRequiredRouteParam<T = unknown>(name: string, routeOptions: CoreNavigatorCurrentRouteOptions = {}): T {
+        const value = this.getRouteParam<T>(name, routeOptions);
+
+        if (value === undefined) {
+            throw new CoreError(`Required param '${name}' not found.`);
+        }
+
+        return value;
+    }
+
+    /**
+     * Get a number route param.
+     * Angular router automatically converts numbers to string, this function automatically converts it back to number.
+     *
+     * This function will fail if parameter is not found.
+     *
+     * @param name Name of the parameter.
+     * @param routeOptions Optional routeOptions to get the params or route value from. If missing, it will autodetect.
+     * @return Value of the parameter, undefined if not found.
+     */
+    getRequiredRouteNumberParam(name: string, routeOptions: CoreNavigatorCurrentRouteOptions = {}): number {
+        const value = this.getRouteNumberParam(name, routeOptions);
+
+        if (value === undefined) {
+            throw new CoreError(`Required number param '${name}' not found.`);
+        }
+
+        return value;
+    }
+
+    /**
+     * Get a boolean route param.
+     * Angular router automatically converts booleans to string, this function automatically converts it back to boolean.
+     *
+     * This function will fail if parameter is not found.
+     *
+     * @param name Name of the parameter.
+     * @param routeOptions Optional routeOptions to get the params or route value from. If missing, it will autodetect.
+     * @return Value of the parameter, undefined if not found.
+     */
+    getRequiredRouteBooleanParam(name: string, routeOptions: CoreNavigatorCurrentRouteOptions = {}): boolean {
+        const value = this.getRouteBooleanParam(name, routeOptions);
+
+        if (value === undefined) {
+            throw new CoreError(`Required boolean param '${name}' not found.`);
+        }
+
+        return value;
+    }
+
     /**
      * Navigate back.
      *

src/core/services/sites.ts

@@ -305,7 +305,7 @@ export class CoreSitesProvider {
         if (data.errorcode && (data.errorcode == 'enablewsdescription' || data.errorcode == 'requirecorrectaccess')) {
             throw new CoreSiteError({
                 errorcode: data.errorcode,
-                message: data.error!,
+                message: data.error ?? '',
             });
         }
 
@@ -816,11 +816,24 @@ export class CoreSitesProvider {
     }
 
     /**
-     * Get current site.
+     * Get current site or undefined if none.
+     *
+     * @return Current site or undefined if none.
+     */
+    getCurrentSite(): CoreSite | undefined {
+        return this.currentSite;
+    }
+
+    /**
+     * Get current site or fail if none.
      *
      * @return Current site.
      */
-    getCurrentSite(): CoreSite | undefined {
+    getRequiredCurrentSite(): CoreSite {
+        if (!this.currentSite) {
+            throw new CoreError('You aren\'t authenticated in any site.');
+        }
+
         return this.currentSite;
     }
 
@@ -1487,7 +1500,9 @@ export class CoreSitesProvider {
             return Promise.resolve();
         }
 
-        if (this.siteSchemasMigration[site.id]) {
+        const siteId = site.id;
+
+        if (this.siteSchemasMigration[site.id] !== undefined) {
             return this.siteSchemasMigration[site.id];
         }
 
@@ -1500,7 +1515,7 @@ export class CoreSitesProvider {
         this.siteSchemasMigration[site.id] = promise;
 
         return promise.finally(() => {
-            delete this.siteSchemasMigration[site.id!];
+            delete this.siteSchemasMigration[siteId];
         });
     }
 

src/theme/theme.base.scss

@@ -548,6 +548,10 @@ ion-card ion-item img.core-module-icon[slot="start"] {
     margin-right: 12px;
 }
 
+ion-card ion-item:only-child {
+    --inner-border-width: 0;
+}
+
 [dir=rtl] ion-item img.core-module-icon[slot="start"] {
     margin-right: unset;
     margin-left: 32px;