MOBILE-4616 feedback: Fix tab selection after submit form

src/addons/mod/feedback/components/index/addon-mod-feedback-index.html

@@ -20,20 +20,13 @@
         [courseId]="courseId" [hasDataToSync]="hasOffline" (completionChanged)="onCompletionChange()" />
 
     <core-tabs [hideUntil]="tabsReady" [selectedIndex]="firstSelectedTab">
-        <core-tab [title]="'addon.mod_feedback.overview' | translate" id="overview" (ionSelect)="tabChanged('overview')">
+        <core-tab [title]="tabs.overview.label | translate" [id]="tabs.overview.name" (ionSelect)="tabChanged(tabs.overview.name)">
             <ng-template>
                 <ng-container *ngTemplateOutlet="tabOverview" />
             </ng-template>
         </core-tab>
-        <core-tab *ngIf="showAnalysis && access && access.canviewreports" id="analysis" [title]="'addon.mod_feedback.analysis' | translate"
+        <core-tab *ngIf="showAnalysis && access" [id]="tabs.analysis.name" [title]="tabs.analysis.label | translate"
-            (ionSelect)="tabChanged('analysis')">
+            (ionSelect)="tabChanged(tabs.analysis.name)">
-            <ng-template>
-                <ng-container *ngTemplateOutlet="tabAnalysis" />
-            </ng-template>
-        </core-tab>
-
-        <core-tab *ngIf="showAnalysis && access && !access.canviewreports" id="analysis"
-            [title]="'addon.mod_feedback.completed_feedbacks' | translate" (ionSelect)="tabChanged('analysis')">
             <ng-template>
                 <ng-container *ngTemplateOutlet="tabAnalysis" />
             </ng-template>
@@ -101,7 +94,7 @@
 
 <!-- Template to render the overview. -->
 <ng-template #tabOverview>
-    <core-loading [hideUntil]="tabsLoaded.overview">
+    <core-loading [hideUntil]="tabs.overview.loaded">
         <ng-container *ngTemplateOutlet="basicInfo" />
 
         <ion-card class="core-info-card" *ngIf="access && access.cancomplete && !access.isopen">
@@ -153,7 +146,7 @@
 
 <!-- Template to render the analysis. -->
 <ng-template #tabAnalysis>
-    <core-loading [hideUntil]="tabsLoaded.analysis">
+    <core-loading [hideUntil]="tabs.analysis.loaded">
         <ng-container *ngTemplateOutlet="basicInfo" />
 
         <ng-container *ngIf="access && (access.canedititems || !access.isempty)">

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

@@ -38,7 +38,12 @@ import {
     AddonModFeedbackSyncResult,
 } from '../../services/feedback-sync';
 import { AddonModFeedbackPrefetchHandler } from '../../services/handlers/prefetch';
-import { ADDON_MOD_FEEDBACK_COMPONENT, ADDON_MOD_FEEDBACK_FORM_SUBMITTED, ADDON_MOD_FEEDBACK_PAGE_NAME } from '../../constants';
+import {
+    ADDON_MOD_FEEDBACK_COMPONENT,
+    ADDON_MOD_FEEDBACK_FORM_SUBMITTED,
+    ADDON_MOD_FEEDBACK_PAGE_NAME,
+    AddonModFeedbackIndexTabName,
+} from '../../constants';
 
 /**
  * Component that displays a feedback index page.
@@ -51,7 +56,7 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
 
     @ViewChild(CoreTabsComponent) tabsComponent?: CoreTabsComponent;
 
-    @Input() tab = 'overview';
+    @Input() selectedTab: AddonModFeedbackIndexTabName = AddonModFeedbackIndexTabName.OVERVIEW;
     @Input() group = 0;
 
     component = ADDON_MOD_FEEDBACK_COMPONENT;
@@ -75,9 +80,9 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
         closeTimeReadable: '',
     };
 
-    tabsLoaded = {
+    tabs = {
-        overview: false,
+        overview: { name: AddonModFeedbackIndexTabName.OVERVIEW, label: 'addon.mod_feedback.overview', loaded: false },
-        analysis: false,
+        analysis: { name: AddonModFeedbackIndexTabName.ANALYSIS, label: 'addon.mod_feedback.analysis', loaded: false },
     };
 
     protected submitObserver: CoreEventObserver;
@@ -92,12 +97,12 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
 
         // Listen for form submit events.
         this.submitObserver = CoreEvents.on(ADDON_MOD_FEEDBACK_FORM_SUBMITTED, async (data) => {
-            if (!this.feedback || data.feedbackId != this.feedback.id) {
+            if (!this.feedback || data.feedbackId !== this.feedback.id) {
                 return;
             }
 
-            this.tabsLoaded.analysis = false;
+            this.tabs.analysis.loaded = false;
-            this.tabsLoaded.overview = false;
+            this.tabs.overview.loaded = false;
             this.showLoading = true;
 
             // Prefetch data if needed.
@@ -110,7 +115,7 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
             }
 
             // Load the right tab.
-            if (data.tab != this.tab) {
+            if (data.tab !== this.selectedTab) {
                 this.tabChanged(data.tab);
             } else {
                 this.loadContent(true);
@@ -149,7 +154,9 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
      */
     protected callAnalyticsLogEvent(): void {
         this.analyticsLogEvent('mod_feedback_view_feedback', {
-            url: this.tab === 'analysis' ? `/mod/feedback/analysis.php?id=${this.module.id}` : undefined,
+            url: this.selectedTab === AddonModFeedbackIndexTabName.ANALYSIS
+                ? `/mod/feedback/analysis.php?id=${this.module.id}`
+                : undefined,
         });
     }
 
@@ -168,8 +175,8 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
             promises.push(AddonModFeedback.invalidateResumePageData(this.feedback.id));
         }
 
-        this.tabsLoaded.analysis = false;
+        this.tabs.analysis.loaded = false;
-        this.tabsLoaded.overview = false;
+        this.tabs.overview.loaded = false;
 
         await Promise.all(promises);
     }
@@ -178,7 +185,7 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
      * @inheritdoc
      */
     protected isRefreshSyncNeeded(syncEventData: AddonModFeedbackAutoSyncData): boolean {
-        if (this.feedback && syncEventData.feedbackId == this.feedback.id) {
+        if (syncEventData.feedbackId === this.feedback?.id) {
             // Refresh the data.
             this.content?.scrollToTop();
 
@@ -207,12 +214,17 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
             this.access = await AddonModFeedback.getFeedbackAccessInformation(this.feedback.id, { cmId: this.module.id });
 
             this.showAnalysis = (this.access.canviewreports || this.access.canviewanalysis) && !this.access.isempty;
+
+            this.tabs.analysis.label = this.access.canviewreports
+                ? 'addon.mod_feedback.analysis'
+                : 'addon.mod_feedback.completed_feedbacks';
+
             this.firstSelectedTab = 0;
             if (!this.showAnalysis) {
-                this.tab = 'overview';
+                this.selectedTab = AddonModFeedbackIndexTabName.OVERVIEW;
             }
 
-            if (this.tab == 'analysis') {
+            if (this.selectedTab === AddonModFeedbackIndexTabName.ANALYSIS) {
                 this.firstSelectedTab = 1;
 
                 return await this.fetchFeedbackAnalysisData();
@@ -227,34 +239,36 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
 
             if (this.tabsReady) {
                 // Make sure the right tab is selected.
-                this.tabsComponent?.selectTab(this.tab || 'overview');
+                this.tabsComponent?.selectTab(this.selectedTab ?? AddonModFeedbackIndexTabName.OVERVIEW);
             }
         }
     }
 
     /**
      * Convenience function to get feedback overview data.
-     *
-     * @returns Resolved when done.
      */
     protected async fetchFeedbackOverviewData(): Promise<void> {
+        if (!this.access || !this.feedback) {
+            return;
+        }
+
         const promises: Promise<void>[] = [];
 
-        if (this.access!.cancomplete && this.access!.cansubmit && this.access!.isopen) {
+        if (this.access.cancomplete && this.access.cansubmit && this.access.isopen) {
-            promises.push(AddonModFeedback.getResumePage(this.feedback!.id, { cmId: this.module.id }).then((goPage) => {
+            promises.push(AddonModFeedback.getResumePage(this.feedback.id, { cmId: this.module.id }).then((goPage) => {
                 this.goPage = goPage > 0 ? goPage : undefined;
 
                 return;
             }));
         }
 
-        if (this.access!.canedititems) {
+        if (this.access.canedititems) {
-            this.overview.timeopen = (this.feedback!.timeopen || 0) * 1000;
+            this.overview.timeopen = (this.feedback.timeopen || 0) * 1000;
             this.overview.openTimeReadable = this.overview.timeopen ? CoreTimeUtils.userDate(this.overview.timeopen) : '';
-            this.overview.timeclose = (this.feedback!.timeclose || 0) * 1000;
+            this.overview.timeclose = (this.feedback.timeclose || 0) * 1000;
             this.overview.closeTimeReadable = this.overview.timeclose ? CoreTimeUtils.userDate(this.overview.timeclose) : '';
         }
-        if (this.access!.canviewanalysis) {
+        if (this.access.canviewanalysis) {
             // Get groups (only for teachers).
             promises.push(this.fetchGroupInfo(this.module.id));
         }
@@ -262,7 +276,7 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
         try {
             await Promise.all(promises);
         } finally {
-            this.tabsLoaded.overview = true;
+            this.tabs.overview.loaded = true;
         }
     }
 
@@ -273,15 +287,14 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
      */
     protected async fetchFeedbackAnalysisData(): Promise<void> {
         try {
-            if (this.access!.canviewanalysis) {
+            if (this.access?.canviewanalysis) {
                 // Get groups (only for teachers).
                 await this.fetchGroupInfo(this.module.id);
             } else {
-                this.tabChanged('overview');
+                this.tabChanged(AddonModFeedbackIndexTabName.OVERVIEW);
             }
-
         } finally {
-            this.tabsLoaded.analysis = true;
+            this.tabs.analysis.loaded = true;
         }
     }
 
@@ -419,7 +432,7 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
      * Open attempts page.
      */
     openAttempts(): void {
-        if (!this.access!.canviewreports || this.completedCount <= 0) {
+        if (!this.access || !this.access.canviewreports || this.completedCount <= 0) {
             return;
         }
 
@@ -438,11 +451,11 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
      *
      * @param tabName New tab name.
      */
-    tabChanged(tabName: string): void {
+    tabChanged(tabName: AddonModFeedbackIndexTabName): void {
-        const tabHasChanged = this.tab !== undefined && this.tab !== tabName;
+        const tabHasChanged = this.selectedTab !== undefined && this.selectedTab !== tabName;
-        this.tab = tabName;
+        this.selectedTab = tabName;
 
-        if (!this.tabsLoaded[this.tab]) {
+        if (!this.tabs[this.selectedTab].loaded) {
             this.loadContent(false, false, true);
         }
 
@@ -455,17 +468,20 @@ export class AddonModFeedbackIndexComponent extends CoreCourseModuleMainActivity
      * Set group to see the analysis.
      *
      * @param groupId Group ID.
-     * @returns Resolved when done.
      */
     async setGroup(groupId: number): Promise<void> {
+        if (!this.feedback) {
+            return;
+        }
+
         this.group = groupId;
 
-        const analysis = await AddonModFeedback.getAnalysis(this.feedback!.id, { groupId, cmId: this.module.id });
+        const analysis = await AddonModFeedback.getAnalysis(this.feedback.id, { groupId, cmId: this.module.id });
 
         this.completedCount = analysis.completedcount;
         this.itemsCount = analysis.itemscount;
 
-        if (this.tab == 'analysis') {
+        if (this.selectedTab === AddonModFeedbackIndexTabName.ANALYSIS) {
             let num = 1;
 
             this.items = <AddonModFeedbackItem[]> analysis.itemsdata.map((itemData) => {

src/addons/mod/feedback/constants.ts

@@ -24,3 +24,11 @@ export const ADDON_MOD_FEEDBACK_MULTICHOICE_HIDENOSELECT = 'h';
 export const ADDON_MOD_FEEDBACK_MULTICHOICERATED_VALUE_SEP = '####';
 
 export const ADDON_MOD_FEEDBACK_PER_PAGE = 20;
+
+/**
+ * Index Tabs.
+ */
+export enum AddonModFeedbackIndexTabName {
+    OVERVIEW = 'overview',
+    ANALYSIS = 'analysis',
+}

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

@@ -36,8 +36,14 @@ import {
 import { AddonModFeedbackFormItem, AddonModFeedbackHelper } from '../../services/feedback-helper';
 import { AddonModFeedbackSync } from '../../services/feedback-sync';
 import { CoreAnalytics, CoreAnalyticsEventType } from '@services/analytics';
-import { ADDON_MOD_FEEDBACK_COMPONENT, ADDON_MOD_FEEDBACK_FORM_SUBMITTED, ADDON_MOD_FEEDBACK_PAGE_NAME } from '../../constants';
+import {
+    ADDON_MOD_FEEDBACK_COMPONENT,
+    ADDON_MOD_FEEDBACK_FORM_SUBMITTED,
+    ADDON_MOD_FEEDBACK_PAGE_NAME,
+    AddonModFeedbackIndexTabName,
+} from '../../constants';
 import { CoreLoadings } from '@services/loadings';
+import { CoreError } from '@classes/errors/error';
 
 /**
  * Page that displays feedback form.
@@ -117,14 +123,14 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
             return;
         }
 
-        if (!this.feedback) {
+        if (!this.feedback || !this.module) {
             return;
         }
 
         try {
             await AddonModFeedback.logView(this.feedback.id, true);
 
-            CoreCourse.checkModuleCompletion(this.courseId, this.module!.completiondata);
+            CoreCourse.checkModuleCompletion(this.courseId, this.module.completiondata);
         } catch {
             // Ignore errors.
         }
@@ -183,7 +189,7 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
 
             let page = 0;
 
-            if (!this.preview && this.access!.cansubmit && !this.access!.isempty) {
+            if (!this.preview && this.access?.cansubmit && !this.access?.isempty) {
                 page = this.currentPage ?? await this.fetchResumePage(options);
             } else {
                 this.preview = true;
@@ -203,11 +209,14 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
      * Fetch access information.
      *
      * @param options Options.
-     * @returns Promise resolved when done.
      */
     protected async fetchAccessData(options: CoreCourseCommonModWSOptions): Promise<void> {
+        if (!this.feedback) {
+            return;
+        }
+
         try {
-            this.access = await AddonModFeedback.getFeedbackAccessInformation(this.feedback!.id, options);
+            this.access = await AddonModFeedback.getFeedbackAccessInformation(this.feedback.id, options);
         } catch (error) {
             if (this.offline || CoreUtils.isWebServiceError(error)) {
                 // Already offline or shouldn't go offline, fail.
@@ -218,7 +227,7 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
             this.offline = true;
             options.readingStrategy = CoreSitesReadingStrategy.PREFER_CACHE;
 
-            this.access = await AddonModFeedback.getFeedbackAccessInformation(this.feedback!.id, options);
+            this.access = await AddonModFeedback.getFeedbackAccessInformation(this.feedback.id, options);
         }
     }
 
@@ -229,8 +238,12 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
      * @returns Promise resolved with the page to resume.
      */
     protected async fetchResumePage(options: CoreCourseCommonModWSOptions): Promise<number> {
+        if (!this.feedback) {
+            throw new CoreError('Cannot fetch resume page: missing feedback');
+        }
+
         try {
-            return await AddonModFeedback.getResumePage(this.feedback!.id, options);
+            return await AddonModFeedback.getResumePage(this.feedback.id, options);
         } catch (error) {
             if (this.offline || CoreUtils.isWebServiceError(error)) {
                 // Already offline or shouldn't go offline, fail.
@@ -241,7 +254,7 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
             this.offline = true;
             options.readingStrategy = CoreSitesReadingStrategy.PREFER_CACHE;
 
-            return AddonModFeedback.getResumePage(this.feedback!.id, options);
+            return AddonModFeedback.getResumePage(this.feedback.id, options);
         }
     }
 
@@ -249,7 +262,6 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
      * Fetch page data.
      *
      * @param page Page to load.
-     * @returns Promise resolved when done.
      */
     protected async fetchFeedbackPageData(page: number = 0): Promise<void> {
         this.items = [];
@@ -274,6 +286,10 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
      * @returns Promise resolved with WS response.
      */
     protected async fetchPageItems(page: number): Promise<AddonModFeedbackPageItems> {
+        if (!this.feedback) {
+            throw new CoreError('Cannot fetch page items: missing feedback');
+        }
+
         const options = {
             cmId: this.cmId,
             readingStrategy: this.offline ? CoreSitesReadingStrategy.PREFER_CACHE : CoreSitesReadingStrategy.ONLY_NETWORK,
@@ -281,7 +297,7 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
         };
 
         if (this.preview) {
-            const response = await AddonModFeedback.getItems(this.feedback!.id, options);
+            const response = await AddonModFeedback.getItems(this.feedback.id, options);
 
             return {
                 items: response.items,
@@ -295,7 +311,7 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
         let response: AddonModFeedbackPageItems;
 
         try {
-            response = await AddonModFeedback.getPageItemsWithValues(this.feedback!.id, page, options);
+            response = await AddonModFeedback.getPageItemsWithValues(this.feedback.id, page, options);
         } catch (error) {
             if (this.offline || CoreUtils.isWebServiceError(error)) {
                 // Already offline or shouldn't go offline, fail.
@@ -306,7 +322,7 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
             this.offline = true;
             options.readingStrategy = CoreSitesReadingStrategy.PREFER_CACHE;
 
-            response = await AddonModFeedback.getPageItemsWithValues(this.feedback!.id, page, options);
+            response = await AddonModFeedback.getPageItemsWithValues(this.feedback.id, page, options);
         }
 
         this.hasPrevPage = !!response.hasprevpage;
@@ -319,9 +335,12 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
      * Function to allow page navigation through the questions form.
      *
      * @param goPrevious If true it will go back to the previous page, if false, it will go forward.
-     * @returns Resolved when done.
      */
     async gotoPage(goPrevious: boolean): Promise<void> {
+        if (!this.feedback || this.currentPage === undefined) {
+            return;
+        }
+
         this.content?.scrollToTop();
         this.feedbackLoaded = false;
 
@@ -330,9 +349,9 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
 
         try {
             // Sync other pages first.
-            await CoreUtils.ignoreErrors(AddonModFeedbackSync.syncFeedback(this.feedback!.id));
+            await CoreUtils.ignoreErrors(AddonModFeedbackSync.syncFeedback(this.feedback.id));
 
-            const response = await AddonModFeedback.processPage(this.feedback!.id, this.currentPage!, responses, {
+            const response = await AddonModFeedback.processPage(this.feedback.id, this.currentPage, responses, {
                 goPrevious,
                 formHasErrors,
                 courseId: this.courseId,
@@ -351,14 +370,14 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
 
                 // Invalidate access information so user will see home page updated (continue form or completion messages).
                 await Promise.all([
-                    AddonModFeedback.invalidateFeedbackAccessInformationData(this.feedback!.id),
+                    AddonModFeedback.invalidateFeedbackAccessInformationData(this.feedback.id),
-                    AddonModFeedback.invalidateResumePageData(this.feedback!.id),
+                    AddonModFeedback.invalidateResumePageData(this.feedback.id),
                 ]);
 
                 // If form has been submitted, the info has been already invalidated but we should update index view.
                 CoreEvents.trigger(ADDON_MOD_FEEDBACK_FORM_SUBMITTED, {
-                    feedbackId: this.feedback!.id,
+                    feedbackId: this.feedback.id,
-                    tab: 'overview',
+                    tab: AddonModFeedbackIndexTabName.OVERVIEW,
                     offline: this.completedOffline,
                 });
 
@@ -371,11 +390,11 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
                 // Errors on questions, stay in page.
             } else {
                 // Invalidate access information so user will see home page updated (continue form).
-                await AddonModFeedback.invalidateResumePageData(this.feedback!.id);
+                await AddonModFeedback.invalidateResumePageData(this.feedback.id);
 
                 CoreEvents.trigger(ADDON_MOD_FEEDBACK_FORM_SUBMITTED, {
-                    feedbackId: this.feedback!.id,
+                    feedbackId: this.feedback.id,
-                    tab: 'overview',
+                    tab: AddonModFeedbackIndexTabName.OVERVIEW,
                     offline: this.completedOffline,
                 });
 
@@ -393,11 +412,15 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
      * Function to link implemented features.
      */
     showAnalysis(): void {
+        if (!this.feedback) {
+            return;
+        }
+
         if (this.fromIndex) {
             // Previous page is the index page, go back.
             CoreEvents.trigger(ADDON_MOD_FEEDBACK_FORM_SUBMITTED, {
-                feedbackId: this.feedback!.id,
+                feedbackId: this.feedback.id,
-                tab: 'analysis',
+                tab: AddonModFeedbackIndexTabName.ANALYSIS,
                 offline: this.completedOffline,
             });
 
@@ -409,7 +432,7 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
         CoreNavigator.navigateToSitePath(ADDON_MOD_FEEDBACK_PAGE_NAME + `/${this.courseId}/${this.cmId}`, {
             params: {
                 module: this.module,
-                tab: 'analysis',
+                tab: AddonModFeedbackIndexTabName.ANALYSIS,
             },
         });
     }

src/addons/mod/feedback/pages/index/index.html

@@ -16,6 +16,6 @@
         <ion-refresher-content pullingText="{{ 'core.pulltorefresh' | translate }}" />
     </ion-refresher>
 
-    <addon-mod-feedback-index [module]="module" [courseId]="courseId" [group]="selectedGroup" [tab]="selectedTab"
+    <addon-mod-feedback-index [module]="module" [courseId]="courseId" [group]="selectedGroup" [selectedTab]="selectedTab"
         (dataRetrieved)="updateData($event)" />
 </ion-content>

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

@@ -16,6 +16,7 @@ import { Component, OnInit, ViewChild } from '@angular/core';
 import { CoreCourseModuleMainActivityPage } from '@features/course/classes/main-activity-page';
 import { CoreNavigator } from '@services/navigator';
 import { AddonModFeedbackIndexComponent } from '../../components/index/index';
+import { AddonModFeedbackIndexTabName } from '../../constants';
 
 /**
  * Page that displays a feedback.
@@ -28,7 +29,7 @@ export class AddonModFeedbackIndexPage extends CoreCourseModuleMainActivityPage<
 
     @ViewChild(AddonModFeedbackIndexComponent) activityComponent?: AddonModFeedbackIndexComponent;
 
-    selectedTab?: string;
+    selectedTab?: AddonModFeedbackIndexTabName;
     selectedGroup?: number;
 
     /**

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

@@ -34,6 +34,7 @@ import {
     ADDON_MOD_FEEDBACK_MULTICHOICE_TYPE_SEP,
     ADDON_MOD_FEEDBACK_MULTICHOICERATED_VALUE_SEP,
     ADDON_MOD_FEEDBACK_PER_PAGE,
+    AddonModFeedbackIndexTabName,
 } from '../constants';
 
 /**
@@ -1263,7 +1264,7 @@ declare module '@singletons/events' {
  */
 export type AddonModFeedbackFormSubmittedData = {
     feedbackId: number;
-    tab: string;
+    tab: AddonModFeedbackIndexTabName;
     offline: boolean;
 };
 

src/addons/mod/feedback/services/handlers/analysis-link.ts

@@ -19,7 +19,7 @@ import { CoreCourse } from '@features/course/services/course';
 import { CoreNavigator } from '@services/navigator';
 import { CoreDomUtils } from '@services/utils/dom';
 import { makeSingleton } from '@singletons';
-import { ADDON_MOD_FEEDBACK_PAGE_NAME } from '../../constants';
+import { ADDON_MOD_FEEDBACK_PAGE_NAME, AddonModFeedbackIndexTabName } from '../../constants';
 import { CoreLoadings } from '@services/loadings';
 
 /**
@@ -59,7 +59,7 @@ export class AddonModFeedbackAnalysisLinkHandlerService extends CoreContentLinks
                         {
                             params: {
                                 module,
-                                tab: 'analysis',
+                                tab: AddonModFeedbackIndexTabName.ANALYSIS,
                             },
                             siteId,
                         },

src/core/classes/tabs.ts

@@ -221,7 +221,7 @@ export class CoreTabsBaseComponent<T extends CoreTabBase> implements AfterViewIn
         this.swiper.update();
         await CoreWait.nextTick();
 
-        if (!this.hasSliddenToInitial && this.selectedIndex && this.selectedIndex >= this.swiper.slidesPerViewDynamic()) {
+        if (!this.hasSliddenToInitial && this.selectedIndex >= this.swiper.slidesPerViewDynamic()) {
             this.hasSliddenToInitial = true;
             this.shouldSlideToInitial = true;
 
@@ -233,7 +233,7 @@ export class CoreTabsBaseComponent<T extends CoreTabBase> implements AfterViewIn
             }, 400);
 
             return;
-        } else if (this.selectedIndex) {
+        } else {
             this.hasSliddenToInitial = true;
         }
 
@@ -301,21 +301,21 @@ export class CoreTabsBaseComponent<T extends CoreTabBase> implements AfterViewIn
      * @returns Initial tab, undefined if no valid tab found.
      */
     protected calculateInitialTab(): T | undefined {
-        const selectedTab: T | undefined = this.tabs[this.selectedIndex || 0] || undefined;
+        const selectedTab: T | undefined = this.tabs[this.selectedIndex] || undefined;
 
-        if (selectedTab && selectedTab.enabled) {
+        if (selectedTab?.enabled) {
             return selectedTab;
         }
 
         // The tab is not enabled or not shown. Get the first tab that is enabled.
-        return this.tabs.find((tab) => tab.enabled) || undefined;
+        return this.tabs.find((tab) => tab.enabled);
     }
 
     /**
      * Method executed when the slides are changed.
      */
     slideChanged(): void {
-        if (!this.swiper) {
+        if (!this.swiper || this.swiper.destroyed) {
             return;
         }
 
@@ -340,7 +340,7 @@ export class CoreTabsBaseComponent<T extends CoreTabBase> implements AfterViewIn
      * Calculate the number of slides that can fit on the screen.
      */
     protected async calculateMaxSlides(): Promise<void> {
-        if (!this.swiper) {
+        if (!this.swiper || this.swiper.destroyed) {
             return;
         }
 
@@ -456,7 +456,7 @@ export class CoreTabsBaseComponent<T extends CoreTabBase> implements AfterViewIn
             return;
         }
 
-        if (this.selected && this.swiper) {
+        if (this.selected && this.swiper && !this.swiper.destroyed) {
             // Check if we need to slide to the tab because it's not visible.
             const firstVisibleTab = this.swiper.activeIndex;
             const lastVisibleTab = firstVisibleTab + this.swiper.slidesPerViewDynamic() - 1;