MOBILE-3980 book: Add index page for book

scripts/langindex.json

@@ -450,6 +450,7 @@
   "addon.mod_bigbluebuttonbn.view_message_session_started_at": "bigbluebuttonbn",
   "addon.mod_bigbluebuttonbn.view_message_viewer": "bigbluebuttonbn",
   "addon.mod_bigbluebuttonbn.view_message_viewers": "bigbluebuttonbn",
+  "addon.mod_book.book:read": "book",
   "addon.mod_book.errorchapter": "book",
   "addon.mod_book.modulenameplural": "book",
   "addon.mod_book.navnexttitle": "book",

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

@@ -23,6 +23,10 @@ const routes: Routes = [
         path: ':courseId/:cmId',
         component: AddonModBookIndexPage,
     },
+    {
+        path: ':courseId/:cmId/contents',
+        loadChildren: () => import('./pages/contents/contents.module').then(m => m.AddonModBookContentsPageModule),
+    },
 ];
 
 @NgModule({

src/addons/mod/book/components/components.module.ts

@@ -16,7 +16,6 @@ import { NgModule } from '@angular/core';
 
 import { CoreSharedModule } from '@/core/shared.module';
 import { CoreCourseComponentsModule } from '@features/course/components/components.module';
-import { CoreTagComponentsModule } from '@features/tag/components/components.module';
 
 import { AddonModBookIndexComponent } from './index/index';
 import { AddonModBookTocComponent } from './toc/toc';
@@ -29,7 +28,6 @@ import { AddonModBookTocComponent } from './toc/toc';
     imports: [
         CoreSharedModule,
         CoreCourseComponentsModule,
-        CoreTagComponentsModule,
     ],
     exports: [
         AddonModBookIndexComponent,

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

@@ -1,8 +1,5 @@
 <!-- Buttons to add to the header. -->
 <core-navbar-buttons slot="end">
-    <ion-button (click)="showToc()" [attr.aria-label]="'addon.mod_book.toc' | translate" aria-haspopup="true" *ngIf="loaded">
-        <ion-icon name="fas-bookmark" slot="icon-only" aria-hidden="true"></ion-icon>
-    </ion-button>
     <core-context-menu>
         <core-context-menu-item *ngIf="externalUrl" [priority]="900" [content]="'core.openinbrowser' | translate" [href]="externalUrl"
             iconAction="fas-external-link-alt" [showBrowserWarning]="false"></core-context-menu-item>
@@ -28,31 +25,30 @@
         [courseId]="courseId">
     </core-course-module-info>
 
-    <ion-card class="core-warning-card" *ngIf="warning">
+    <ion-list>
         <ion-item>
-            <ion-icon name="fas-exclamation-triangle" slot="start" aria-hidden="true"></ion-icon>
+            <ion-label>
-            <ion-label><span [innerHTML]="warning"></span></ion-label>
+                <h2>{{ 'addon.mod_book.toc' | translate }}</h2>
+            </ion-label>
         </ion-item>
-    </ion-card>
 
-    <div class="safe-area-padding-horizontal">
+        <ion-item class="ion-text-wrap" *ngFor="let chapter of chapters" [class.item-dimmed]="chapter.hidden" button detail="true"
-        <core-navigation-bar *ngIf="displayNavBar" [items]="navigationItems" [showTitles]="displayTitlesInNavBar"
+            (click)="openBook(chapter.id)">
-            previousTranslate="addon.mod_book.navprevtitle" nextTranslate="addon.mod_book.navnexttitle" (action)="changeChapter($event.id)">
+            <ion-label>
-        </core-navigation-bar>
+                <p [class.ion-padding-start]="addPadding && chapter.level == 1 ? true : null">
+                    <span *ngIf="showNumbers" class="addon-mod-book-number">{{chapter.indexNumber}}&nbsp;</span>
+                    <span *ngIf="showBullets" class="addon-mod-book-bullet">&bull;&nbsp;</span>
+                    <core-format-text [text]="chapter.title" contextLevel="module" [contextInstanceId]="module.id" [courseId]="courseId">
+                    </core-format-text>
+                </p>
+            </ion-label>
+        </ion-item>
 
-        <core-swipe-slides [manager]="manager" [options]="slidesOpts">
+        <ion-button class="ion-margin" expand="block" (click)="openBook()">
-            <ng-template let-chapter="item">
+            {{ 'addon.mod_book.book:read' | translate }}
-                <div class="ion-padding">
+        </ion-button>
-                    <core-format-text [component]="component" [componentId]="componentId" [text]="chapter.content" contextLevel="module"
+
-                        [contextInstanceId]="module.id" [courseId]="courseId"></core-format-text>
+    </ion-list>
-                    <div class="ion-margin-top" *ngIf="chapter.tags?.length > 0">
-                        <strong>{{ 'core.tag.tags' | translate }}: </strong>
-                        <core-tag-list [tags]="chapter.tags"></core-tag-list>
-                    </div>
-                </div>
-            </ng-template>
-        </core-swipe-slides>
-    </div>
 
 </core-loading>
 

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

@@ -12,33 +12,15 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { Component, Optional, Input, OnInit, ViewChild, ElementRef, OnDestroy } from '@angular/core';
+import { Component, Optional, OnInit, OnDestroy } from '@angular/core';
 import { CoreCourseModuleMainResourceComponent } from '@features/course/classes/main-resource-component';
-import {
+import { AddonModBook, AddonModBookBookWSData, AddonModBookNumbering, AddonModBookTocChapter } from '../../services/book';
-    AddonModBookProvider,
-    AddonModBookContentsMap,
-    AddonModBookTocChapter,
-    AddonModBookNavStyle,
-    AddonModBook,
-    AddonModBookBookWSData,
-} from '../../services/book';
-import { CoreTag, CoreTagItem } from '@features/tag/services/tag';
-import { CoreDomUtils } from '@services/utils/dom';
 import { CoreCourseContentsPage } from '@features/course/pages/contents/contents';
-import { CoreUtils } from '@services/utils/utils';
 import { CoreCourse } from '@features/course/services/course';
-import { AddonModBookTocComponent } from '../toc/toc';
+import { CoreNavigator } from '@services/navigator';
-import { CoreNavigationBarItem } from '@components/navigation-bar/navigation-bar';
-import { CoreError } from '@classes/errors/error';
-import { Translate } from '@singletons';
-import { CoreSwipeSlidesComponent, CoreSwipeSlidesOptions } from '@components/swipe-slides/swipe-slides';
-import { CoreSwipeSlidesItemsManagerSource } from '@classes/items-management/swipe-slides-items-manager-source';
-import { CoreCourseModule } from '@features/course/services/course-helper';
-import { CoreSwipeSlidesItemsManager } from '@classes/items-management/swipe-slides-items-manager';
-import { CoreTextUtils } from '@services/utils/text';
 
 /**
- * Component that displays a book.
+ * Component that displays a book entry page.
  */
 @Component({
     selector: 'addon-mod-book-index',
@@ -46,191 +28,63 @@ import { CoreTextUtils } from '@services/utils/text';
 })
 export class AddonModBookIndexComponent extends CoreCourseModuleMainResourceComponent implements OnInit, OnDestroy {
 
-    @ViewChild(CoreSwipeSlidesComponent) slides?: CoreSwipeSlidesComponent;
+    showNumbers = true;
+    addPadding = true;
+    showBullets = false;
+    chapters: AddonModBookTocChapter[] = [];
 
-    @Input() initialChapterId?: number; // The initial chapter ID to load.
+    protected book?: AddonModBookBookWSData;
 
-    component = AddonModBookProvider.COMPONENT;
+    constructor( @Optional() courseContentsPage?: CoreCourseContentsPage) {
-    manager?: CoreSwipeSlidesItemsManager<LoadedChapter, AddonModBookSlidesItemsManagerSource>;
-    warning = '';
-    displayNavBar = true;
-    navigationItems: CoreNavigationBarItem<AddonModBookTocChapter>[] = [];
-    displayTitlesInNavBar = false;
-    slidesOpts: CoreSwipeSlidesOptions = {
-        autoHeight: true,
-        scrollOnChange: 'top',
-    };
-
-    protected firstLoad = true;
-    protected element: HTMLElement;
-    protected managerUnsubscribe?: () => void;
-
-    constructor(
-        elementRef: ElementRef,
-        @Optional() courseContentsPage?: CoreCourseContentsPage,
-    ) {
         super('AddonModBookIndexComponent', courseContentsPage);
-
-        this.element = elementRef.nativeElement;
     }
 
     /**
-     * Component being initialized.
+     * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
         super.ngOnInit();
 
-        const source = new AddonModBookSlidesItemsManagerSource(
-            this.courseId,
-            this.module,
-            CoreTag.areTagsAvailableInSite(),
-            this.initialChapterId,
-        );
-        this.manager = new CoreSwipeSlidesItemsManager(source);
-        this.managerUnsubscribe = this.manager.addListener({
-            onSelectedItemUpdated: (item) => {
-                this.onChapterViewed(item.id);
-            },
-        });
-
         this.loadContent();
     }
 
-    get book(): AddonModBookBookWSData | undefined {
+    /**
-        return this.manager?.getSource().book;
+     * @inheritdoc
+     */
+    protected async fetchContent(refresh?: boolean): Promise<void> {
+        try {
+            this.book = await AddonModBook.getBook(this.courseId, this.module.id);
+
+            if (this.book) {
+                this.dataRetrieved.emit(this.book);
+
+                this.description = this.book.intro;
+                this.showNumbers = this.book.numbering == AddonModBookNumbering.NUMBERS;
+                this.showBullets = this.book.numbering == AddonModBookNumbering.BULLETS;
+                this.addPadding = this.book.numbering != AddonModBookNumbering.NONE;
             }
 
-    get chapters(): AddonModBookTocChapter[] {
+            const contents = await CoreCourse.getModuleContents(this.module, this.courseId);
-        return this.manager?.getSource().chapters || [];
+
+            this.chapters = AddonModBook.getTocList(contents);
+        } finally {
+            this.fillContextMenu(refresh);
+        }
     }
 
     /**
-     * Show the TOC.
+     * Open the book in a certain chapter.
+     *
+     * @param chapterId Chapter to open, undefined for first chapter.
      */
-    async showToc(): Promise<void> {
+    openBook(chapterId?: number): void {
-        // Create the toc modal.
+        CoreNavigator.navigate('contents', {
-        const visibleChapter = this.manager?.getSelectedItem();
+            params: {
-
+                cmId: this.module.id,
-        const modalData = await CoreDomUtils.openSideModal<number>({
-            component: AddonModBookTocComponent,
-            componentProps: {
-                moduleId: this.module.id,
-                chapters: this.chapters,
-                selected: visibleChapter,
                 courseId: this.courseId,
-                book: this.book,
+                chapterId,
             },
         });
-
-        if (modalData) {
-            this.changeChapter(modalData);
-        }
-    }
-
-    /**
-     * Change the current chapter.
-     *
-     * @param chapterId Chapter to load.
-     * @return Promise resolved when done.
-     */
-    changeChapter(chapterId: number): void {
-        if (!chapterId) {
-            return;
-        }
-
-        this.slides?.slideToItem({ id: chapterId });
-    }
-
-    /**
-     * Perform the invalidate content function.
-     *
-     * @return Resolved when done.
-     */
-    protected async invalidateContent(): Promise<void> {
-        await this.manager?.getSource().invalidateContent();
-    }
-
-    /**
-     * Download book contents and load the current chapter.
-     *
-     * @param refresh Whether we're refreshing data.
-     * @return Promise resolved when done.
-     */
-    protected async fetchContent(refresh = false): Promise<void> {
-        try {
-            const source = this.manager?.getSource();
-            if (!source) {
-                return;
-            }
-
-            const downloadResult = await this.downloadResourceIfNeeded(refresh);
-
-            const book = await source.loadBookData();
-
-            if (book) {
-                this.dataRetrieved.emit(book);
-
-                this.description = book.intro;
-                this.displayNavBar = book.navstyle != AddonModBookNavStyle.TOC_ONLY;
-                this.displayTitlesInNavBar = book.navstyle == AddonModBookNavStyle.TEXT;
-            }
-
-            // Get contents. No need to refresh, it has been done in downloadResourceIfNeeded.
-            await source.loadContents();
-
-            await source.load();
-
-            this.warning = downloadResult?.failed ? this.getErrorDownloadingSomeFilesMessage(downloadResult.error || '') : '';
-        } finally {
-            // Pass false because downloadResourceIfNeeded already invalidates and refresh data if refresh=true.
-            this.fillContextMenu(false);
-        }
-    }
-
-    /**
-     * Update data related to chapter being viewed.
-     *
-     * @param chapterId Chapter viewed.
-     * @return Promise resolved when done.
-     */
-    protected async onChapterViewed(chapterId: number): Promise<void> {
-        // Don't log the chapter ID when the user has just opened the book.
-        const logChapterId = this.firstLoad;
-        this.firstLoad = false;
-
-        if (this.displayNavBar) {
-            this.navigationItems = this.getNavigationItems(chapterId);
-        }
-
-        // Chapter loaded, log view.
-        await CoreUtils.ignoreErrors(AddonModBook.logView(
-            this.module.instance,
-            logChapterId ? chapterId : undefined,
-            this.module.name,
-        ));
-
-        const currentChapterIndex = this.chapters.findIndex((chapter) => chapter.id == chapterId);
-        const isLastChapter = currentChapterIndex < 0 || this.chapters[currentChapterIndex + 1] === undefined;
-
-        // Module is completed when last chapter is viewed, so we only check completion if the last is reached.
-        if (isLastChapter) {
-            CoreCourse.checkModuleCompletion(this.courseId, this.module.completiondata);
-        }
-    }
-
-    /**
-     * Converts chapters to navigation items.
-     *
-     * @param chapterId Current chapter Id.
-     * @return Navigation items.
-     */
-    protected getNavigationItems(chapterId: number): CoreNavigationBarItem<AddonModBookTocChapter>[] {
-        return this.chapters.map((chapter) => ({
-            item: chapter,
-            title: chapter.title,
-            current: chapter.id == chapterId,
-            enabled: true,
-        }));
     }
 
     /**
@@ -238,99 +92,6 @@ export class AddonModBookIndexComponent extends CoreCourseModuleMainResourceComp
      */
     ngOnDestroy(): void {
         super.ngOnDestroy();
-
-        this.managerUnsubscribe && this.managerUnsubscribe();
-    }
-
-}
-
-type LoadedChapter = {
-    id: number;
-    content?: string;
-    tags?: CoreTagItem[];
-};
-
-/**
- * Helper to manage swiping within a collection of chapters.
- */
-class AddonModBookSlidesItemsManagerSource extends CoreSwipeSlidesItemsManagerSource<LoadedChapter> {
-
-    readonly COURSE_ID: number;
-    readonly MODULE: CoreCourseModule;
-    readonly TAGS_ENABLED: boolean;
-
-    book?: AddonModBookBookWSData;
-    chapters: AddonModBookTocChapter[] = [];
-    contentsMap: AddonModBookContentsMap = {};
-
-    constructor(courseId: number, module: CoreCourseModule, tagsEnabled: boolean, initialChapterId?: number) {
-        super(initialChapterId ? { id: initialChapterId } : undefined);
-
-        this.COURSE_ID = courseId;
-        this.MODULE = module;
-        this.TAGS_ENABLED = tagsEnabled;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    getItemId(item: LoadedChapter): string | number {
-        return item.id;
-    }
-
-    /**
-     * Load book data from WS.
-     *
-     * @return Promise resolved when done.
-     */
-    async loadBookData(): Promise<AddonModBookBookWSData> {
-        this.book = await AddonModBook.getBook(this.COURSE_ID, this.MODULE.id);
-
-        return this.book;
-    }
-
-    /**
-     * Load module contents.
-     */
-    async loadContents(): Promise<void> {
-        const contents = await CoreCourse.getModuleContents(this.MODULE, this.COURSE_ID);
-
-        this.contentsMap = AddonModBook.getContentsMap(contents);
-        this.chapters = AddonModBook.getTocList(contents);
-    }
-
-    /**
-     * @inheritdoc
-     */
-    protected async loadItems(): Promise<LoadedChapter[]> {
-        try {
-            const newChapters = await Promise.all(this.chapters.map(async (chapter) => {
-                const content = await AddonModBook.getChapterContent(this.contentsMap, chapter.id, this.MODULE.id);
-
-                return {
-                    id: chapter.id,
-                    content,
-                    tags: this.TAGS_ENABLED ? this.contentsMap[chapter.id].tags : [],
-                };
-            }));
-
-            return newChapters;
-        } catch (error) {
-            if (!CoreTextUtils.getErrorMessageFromError(error)) {
-                throw new CoreError(Translate.instant('addon.mod_book.errorchapter'));
-            }
-
-            throw error;
-        }
-    }
-
-    /**
-     * Perform the invalidate content function.
-     *
-     * @return Resolved when done.
-     */
-    invalidateContent(): Promise<void> {
-        return AddonModBook.invalidateContent(this.MODULE.id, this.COURSE_ID);
     }
 
 }

src/addons/mod/book/lang.json

@@ -1,4 +1,5 @@
 {
+    "book:read": "View book",
     "errorchapter": "Error reading chapter of book.",
     "modulenameplural": "Books",
     "navnexttitle": "Next: {{$a}}",

src/addons/mod/book/pages/contents/contents.html

@@ -0,0 +1,53 @@
+<ion-header>
+    <ion-toolbar>
+        <ion-buttons slot="start">
+            <ion-back-button [text]="'core.back' | translate"></ion-back-button>
+        </ion-buttons>
+        <ion-title>
+            <h1>
+                <core-format-text [text]="title" contextLevel="module" [contextInstanceId]="cmId" [courseId]="courseId">
+                </core-format-text>
+            </h1>
+        </ion-title>
+        <ion-buttons slot="end">
+            <ion-button (click)="showToc()" [attr.aria-label]="'addon.mod_book.toc' | translate" aria-haspopup="true" *ngIf="loaded">
+                <ion-icon name="fas-bookmark" slot="icon-only" aria-hidden="true"></ion-icon>
+            </ion-button>
+        </ion-buttons>
+    </ion-toolbar>
+</ion-header>
+<ion-content>
+    <ion-refresher slot="fixed" [disabled]="!loaded" (ionRefresh)="doRefresh($event.target)">
+        <ion-refresher-content pullingText="{{ 'core.pulltorefresh' | translate }}"></ion-refresher-content>
+    </ion-refresher>
+
+    <core-loading [hideUntil]="loaded">
+
+        <ion-card class="core-warning-card" *ngIf="warning">
+            <ion-item>
+                <ion-icon name="fas-exclamation-triangle" slot="start" aria-hidden="true"></ion-icon>
+                <ion-label><span [innerHTML]="warning"></span></ion-label>
+            </ion-item>
+        </ion-card>
+
+        <div class="safe-area-padding-horizontal">
+            <core-navigation-bar *ngIf="displayNavBar" [items]="navigationItems" [showTitles]="displayTitlesInNavBar"
+                previousTranslate="addon.mod_book.navprevtitle" nextTranslate="addon.mod_book.navnexttitle"
+                (action)="changeChapter($event.id)">
+            </core-navigation-bar>
+
+            <core-swipe-slides [manager]="manager" [options]="slidesOpts">
+                <ng-template let-chapter="item">
+                    <div class="ion-padding">
+                        <core-format-text [component]="component" [componentId]="cmId" [text]="chapter.content" contextLevel="module"
+                            [contextInstanceId]="cmId" [courseId]="courseId"></core-format-text>
+                        <div class="ion-margin-top" *ngIf="chapter.tags?.length > 0">
+                            <strong>{{ 'core.tag.tags' | translate }}: </strong>
+                            <core-tag-list [tags]="chapter.tags"></core-tag-list>
+                        </div>
+                    </div>
+                </ng-template>
+            </core-swipe-slides>
+        </div>
+    </core-loading>
+</ion-content>

src/addons/mod/book/pages/contents/contents.module.ts

@@ -0,0 +1,40 @@
+// (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 { NgModule } from '@angular/core';
+import { RouterModule, Routes } from '@angular/router';
+
+import { CoreSharedModule } from '@/core/shared.module';
+import { AddonModBookContentsPage } from './contents';
+import { CoreTagComponentsModule } from '@features/tag/components/components.module';
+
+const routes: Routes = [
+    {
+        path: '',
+        component: AddonModBookContentsPage,
+    },
+];
+
+@NgModule({
+    imports: [
+        RouterModule.forChild(routes),
+        CoreSharedModule,
+        CoreTagComponentsModule,
+    ],
+    declarations: [
+        AddonModBookContentsPage,
+    ],
+    exports: [RouterModule],
+})
+export class AddonModBookContentsPageModule {}

src/addons/mod/book/pages/contents/contents.ts

@@ -0,0 +1,428 @@
+// (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 { CoreConstants } from '@/core/constants';
+import { Component, OnDestroy, OnInit, ViewChild } from '@angular/core';
+import { CoreError } from '@classes/errors/error';
+import { CoreSwipeSlidesItemsManager } from '@classes/items-management/swipe-slides-items-manager';
+import { CoreSwipeSlidesItemsManagerSource } from '@classes/items-management/swipe-slides-items-manager-source';
+import { CoreNavigationBarItem } from '@components/navigation-bar/navigation-bar';
+import { CoreSwipeSlidesComponent, CoreSwipeSlidesOptions } from '@components/swipe-slides/swipe-slides';
+import { CoreCourseResourceDownloadResult } from '@features/course/classes/main-resource-component';
+import { CoreCourse } from '@features/course/services/course';
+import { CoreCourseModuleData } from '@features/course/services/course-helper';
+import { CoreCourseModulePrefetchDelegate } from '@features/course/services/module-prefetch-delegate';
+import { CoreTag, CoreTagItem } from '@features/tag/services/tag';
+import { IonRefresher } from '@ionic/angular';
+import { CoreApp } from '@services/app';
+import { CoreNavigator } from '@services/navigator';
+import { CoreDomUtils } from '@services/utils/dom';
+import { CoreTextUtils } from '@services/utils/text';
+import { CoreUtils } from '@services/utils/utils';
+import { Translate } from '@singletons';
+import { AddonModBookTocComponent } from '../../components/toc/toc';
+import {
+    AddonModBook,
+    AddonModBookBookWSData,
+    AddonModBookContentsMap,
+    AddonModBookNavStyle,
+    AddonModBookProvider,
+    AddonModBookTocChapter,
+} from '../../services/book';
+
+/**
+ * Page that displays a book contents.
+ */
+@Component({
+    selector: 'page-addon-mod-book-contents',
+    templateUrl: 'contents.html',
+})
+export class AddonModBookContentsPage implements OnInit, OnDestroy {
+
+    @ViewChild(CoreSwipeSlidesComponent) slides?: CoreSwipeSlidesComponent;
+
+    title!: string;
+    cmId!: number;
+    courseId!: number;
+    initialChapterId?: number;
+    component = AddonModBookProvider.COMPONENT;
+    manager?: CoreSwipeSlidesItemsManager<LoadedChapter, AddonModBookSlidesItemsManagerSource>;
+    warning = '';
+    displayNavBar = true;
+    navigationItems: CoreNavigationBarItem<AddonModBookTocChapter>[] = [];
+    displayTitlesInNavBar = false;
+    slidesOpts: CoreSwipeSlidesOptions = {
+        autoHeight: true,
+        scrollOnChange: 'top',
+    };
+
+    loaded = false;
+
+    protected firstLoad = true;
+    protected managerUnsubscribe?: () => void;
+
+    /**
+     * @inheritdoc
+     */
+    ngOnInit(): void {
+        try {
+            this.cmId = CoreNavigator.getRequiredRouteNumberParam('cmId');
+            this.courseId = CoreNavigator.getRequiredRouteNumberParam('courseId');
+            this.initialChapterId = CoreNavigator.getRouteNumberParam('chapterId');
+        } catch (error) {
+            CoreDomUtils.showErrorModal(error);
+
+            CoreNavigator.back();
+
+            return;
+        }
+
+        const source = new AddonModBookSlidesItemsManagerSource(
+            this.courseId,
+            this.cmId,
+            CoreTag.areTagsAvailableInSite(),
+            this.initialChapterId,
+        );
+        this.manager = new CoreSwipeSlidesItemsManager(source);
+        this.managerUnsubscribe = this.manager.addListener({
+            onSelectedItemUpdated: (item) => {
+                this.onChapterViewed(item.id);
+            },
+        });
+
+        this.fetchContent();
+    }
+
+    get module(): CoreCourseModuleData | undefined {
+        return this.manager?.getSource().module;
+    }
+
+    get book(): AddonModBookBookWSData | undefined {
+        return this.manager?.getSource().book;
+    }
+
+    get chapters(): AddonModBookTocChapter[] {
+        return this.manager?.getSource().chapters || [];
+    }
+
+    /**
+     * Download book contents and load the current chapter.
+     *
+     * @param refresh Whether we're refreshing data.
+     * @return Promise resolved when done.
+     */
+    protected async fetchContent(refresh = false): Promise<void> {
+        try {
+            const source = this.manager?.getSource();
+            if (!source) {
+                return;
+            }
+
+            const { module, book } = await source.loadBookData();
+
+            const downloadResult = await this.downloadResourceIfNeeded(module, refresh);
+
+            if (book) {
+                this.displayNavBar = book.navstyle != AddonModBookNavStyle.TOC_ONLY;
+                this.displayTitlesInNavBar = book.navstyle == AddonModBookNavStyle.TEXT;
+                this.title = book.name;
+            } else {
+                this.title = this.title || Translate.instant('addon.mod_book.book:read');
+            }
+
+            // Get contents. No need to refresh, it has been done in downloadResourceIfNeeded.
+            await source.loadContents();
+
+            await source.load();
+
+            if (downloadResult?.failed) {
+                const error = CoreTextUtils.getErrorMessageFromError(downloadResult.error) || downloadResult.error;
+                this.warning = Translate.instant('core.errordownloadingsomefiles') + (error ? ' ' + error : '');
+            } else {
+                this.warning = '';
+            }
+        } finally {
+            this.loaded = true;
+        }
+    }
+
+    /**
+     * Download a resource if needed.
+     * If the download call fails the promise won't be rejected, but the error will be included in the returned object.
+     * If module.contents cannot be loaded then the Promise will be rejected.
+     *
+     * @param refresh Whether we're refreshing data.
+     * @return Promise resolved when done.
+     */
+    protected async downloadResourceIfNeeded(
+        module: CoreCourseModuleData,
+        refresh = false,
+    ): Promise<CoreCourseResourceDownloadResult> {
+
+        const result: CoreCourseResourceDownloadResult = {
+            failed: false,
+        };
+        let contentsAlreadyLoaded = false;
+
+        // Get module status to determine if it needs to be downloaded.
+        const status = await CoreCourseModulePrefetchDelegate.getModuleStatus(module, this.courseId, undefined, refresh);
+
+        if (status !== CoreConstants.DOWNLOADED) {
+            // Download content. This function also loads module contents if needed.
+            try {
+                await CoreCourseModulePrefetchDelegate.downloadModule(module, this.courseId);
+
+                // If we reach here it means the download process already loaded the contents, no need to do it again.
+                contentsAlreadyLoaded = true;
+            } catch (error) {
+                // Mark download as failed but go on since the main files could have been downloaded.
+                result.failed = true;
+                result.error = error;
+            }
+        }
+
+        if (!module.contents?.length || (refresh && !contentsAlreadyLoaded)) {
+            // Try to load the contents.
+            const ignoreCache = refresh && CoreApp.isOnline();
+
+            try {
+                await CoreCourse.loadModuleContents(module, undefined, undefined, false, ignoreCache);
+            } catch (error) {
+                // Error loading contents. If we ignored cache, try to get the cached value.
+                if (ignoreCache && !module.contents) {
+                    await CoreCourse.loadModuleContents(module);
+                } else if (!module.contents) {
+                    // Not able to load contents, throw the error.
+                    throw error;
+                }
+            }
+        }
+
+        return result;
+    }
+
+    /**
+     * Change the current chapter.
+     *
+     * @param chapterId Chapter to load.
+     * @return Promise resolved when done.
+     */
+    changeChapter(chapterId: number): void {
+        if (!chapterId) {
+            return;
+        }
+
+        this.slides?.slideToItem({ id: chapterId });
+    }
+
+    /**
+     * Refresh the data.
+     *
+     * @param refresher Refresher.
+     * @return Promise resolved when done.
+     */
+    async doRefresh(refresher?: IonRefresher): Promise<void> {
+        if (this.manager) {
+            await CoreUtils.ignoreErrors(Promise.all([
+                this.manager.getSource().invalidateContent(),
+                CoreCourseModulePrefetchDelegate.invalidateCourseUpdates(this.courseId), // To detect if book was updated.
+            ]));
+        }
+
+        await CoreUtils.ignoreErrors(this.fetchContent(true));
+
+        refresher?.complete();
+    }
+
+    /**
+     * Show the TOC.
+     */
+    async showToc(): Promise<void> {
+        // Create the toc modal.
+        const visibleChapter = this.manager?.getSelectedItem();
+
+        const modalData = await CoreDomUtils.openSideModal<number>({
+            component: AddonModBookTocComponent,
+            componentProps: {
+                moduleId: this.cmId,
+                chapters: this.chapters,
+                selected: visibleChapter,
+                courseId: this.courseId,
+                book: this.book,
+            },
+        });
+
+        if (modalData) {
+            this.changeChapter(modalData);
+        }
+    }
+
+    /**
+     * Update data related to chapter being viewed.
+     *
+     * @param chapterId Chapter viewed.
+     * @return Promise resolved when done.
+     */
+    protected async onChapterViewed(chapterId: number): Promise<void> {
+        // Don't log the chapter ID when the user has just opened the book.
+        const logChapterId = this.firstLoad;
+        this.firstLoad = false;
+
+        if (this.displayNavBar) {
+            this.navigationItems = this.getNavigationItems(chapterId);
+        }
+
+        if (!this.module) {
+            return;
+        }
+
+        // Chapter loaded, log view.
+        await CoreUtils.ignoreErrors(AddonModBook.logView(
+            this.module.instance,
+            logChapterId ? chapterId : undefined,
+            this.module.name,
+        ));
+
+        const currentChapterIndex = this.chapters.findIndex((chapter) => chapter.id == chapterId);
+        const isLastChapter = currentChapterIndex < 0 || this.chapters[currentChapterIndex + 1] === undefined;
+
+        // Module is completed when last chapter is viewed, so we only check completion if the last is reached.
+        if (isLastChapter) {
+            CoreCourse.checkModuleCompletion(this.courseId, this.module.completiondata);
+        }
+    }
+
+    /**
+     * Converts chapters to navigation items.
+     *
+     * @param chapterId Current chapter Id.
+     * @return Navigation items.
+     */
+    protected getNavigationItems(chapterId: number): CoreNavigationBarItem<AddonModBookTocChapter>[] {
+        return this.chapters.map((chapter) => ({
+            item: chapter,
+            title: chapter.title,
+            current: chapter.id == chapterId,
+            enabled: true,
+        }));
+    }
+
+    /**
+     * @inheritdoc
+     */
+    ngOnDestroy(): void {
+        this.managerUnsubscribe && this.managerUnsubscribe();
+    }
+
+}
+
+type LoadedChapter = {
+    id: number;
+    content?: string;
+    tags?: CoreTagItem[];
+};
+
+/**
+ * Helper to manage swiping within a collection of chapters.
+ */
+class AddonModBookSlidesItemsManagerSource extends CoreSwipeSlidesItemsManagerSource<LoadedChapter> {
+
+    readonly COURSE_ID: number;
+    readonly CM_ID: number;
+    readonly TAGS_ENABLED: boolean;
+
+    module?: CoreCourseModuleData;
+    book?: AddonModBookBookWSData;
+    chapters: AddonModBookTocChapter[] = [];
+    contentsMap: AddonModBookContentsMap = {};
+
+    constructor(courseId: number, cmId: number, tagsEnabled: boolean, initialChapterId?: number) {
+        super(initialChapterId ? { id: initialChapterId } : undefined);
+
+        this.COURSE_ID = courseId;
+        this.CM_ID = cmId;
+        this.TAGS_ENABLED = tagsEnabled;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    getItemId(item: LoadedChapter): string | number {
+        return item.id;
+    }
+
+    /**
+     * Load book data from WS.
+     *
+     * @return Promise resolved when done.
+     */
+    async loadBookData(): Promise<{ module: CoreCourseModuleData; book: AddonModBookBookWSData }> {
+        this.module = await CoreCourse.getModule(this.CM_ID, this.COURSE_ID);
+        this.book = await AddonModBook.getBook(this.COURSE_ID, this.CM_ID);
+
+        return {
+            module: this.module,
+            book: this.book,
+        };
+    }
+
+    /**
+     * Load module contents.
+     */
+    async loadContents(): Promise<void> {
+        if (!this.module) {
+            return;
+        }
+
+        const contents = await CoreCourse.getModuleContents(this.module, this.COURSE_ID);
+
+        this.contentsMap = AddonModBook.getContentsMap(contents);
+        this.chapters = AddonModBook.getTocList(contents);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected async loadItems(): Promise<LoadedChapter[]> {
+        try {
+            const newChapters = await Promise.all(this.chapters.map(async (chapter) => {
+                const content = await AddonModBook.getChapterContent(this.contentsMap, chapter.id, this.CM_ID);
+
+                return {
+                    id: chapter.id,
+                    content,
+                    tags: this.TAGS_ENABLED ? this.contentsMap[chapter.id].tags : [],
+                };
+            }));
+
+            return newChapters;
+        } catch (error) {
+            if (!CoreTextUtils.getErrorMessageFromError(error)) {
+                throw new CoreError(Translate.instant('addon.mod_book.errorchapter'));
+            }
+
+            throw error;
+        }
+    }
+
+    /**
+     * Perform the invalidate content function.
+     *
+     * @return Resolved when done.
+     */
+    invalidateContent(): Promise<void> {
+        return AddonModBook.invalidateContent(this.CM_ID, this.COURSE_ID);
+    }
+
+}

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

@@ -19,6 +19,6 @@
         <ion-refresher-content pullingText="{{ 'core.pulltorefresh' | translate }}"></ion-refresher-content>
     </ion-refresher>
 
-    <addon-mod-book-index [module]="module" [courseId]="courseId" [initialChapterId]="chapterId" (dataRetrieved)="updateData($event)">
+    <addon-mod-book-index [module]="module" [courseId]="courseId" (dataRetrieved)="updateData($event)">
     </addon-mod-book-index>
 </ion-content>

src/addons/mod/book/pages/index/index.page.ts

@@ -12,30 +12,19 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { Component, OnInit, ViewChild } from '@angular/core';
+import { Component, ViewChild } from '@angular/core';
 import { CoreCourseModuleMainActivityPage } from '@features/course/classes/main-activity-page';
-import { CoreNavigator } from '@services/navigator';
 import { AddonModBookIndexComponent } from '../../components/index/index';
 
 /**
- * Page that displays a book.
+ * Page that displays a book entry page.
  */
 @Component({
     selector: 'page-addon-mod-book-index',
     templateUrl: 'index.html',
 })
-export class AddonModBookIndexPage extends CoreCourseModuleMainActivityPage<AddonModBookIndexComponent> implements OnInit {
+export class AddonModBookIndexPage extends CoreCourseModuleMainActivityPage<AddonModBookIndexComponent> {
 
     @ViewChild(AddonModBookIndexComponent) activityComponent?: AddonModBookIndexComponent;
 
-    chapterId?: number;
-
-    /**
-     * Component being initialized.
-     */
-    ngOnInit(): void {
-        super.ngOnInit();
-        this.chapterId = CoreNavigator.getRouteNumberParam('chapterId');
-    }
-
 }