Revert "MOBILE-4842 chore: Remove uneeded code from MOBILE-4075"

This reverts commit dbed0e7.

Author: crazyserver

src/core/features/course/pages/index/index.html

@@ -1,4 +1,4 @@
-<ion-header [collapsible]="(tabsComponent()?.selectedIndex === 0 || tabsComponent()?.selectedIndex === undefined)">
+<ion-header [collapsible]="(tabsComponent()?.selectedIndex === 0 || tabsComponent()?.selectedIndex === undefined) && !fullScreenEnabled">
     <ion-toolbar>
         <ion-buttons slot="start">
             <ion-back-button [text]="'core.back' | translate" />

src/core/features/course/pages/index/index.ts

@@ -53,8 +53,10 @@ export default class CoreCourseIndexPage implements OnInit, OnDestroy {
     tabs: CourseTab[] = [];
     loaded = false;
     progress?: number;
+    fullScreenEnabled = false;
 
     protected currentPagePath = '';
+    protected fullScreenObserver: CoreEventObserver;
     protected selectTabObserver: CoreEventObserver;
     protected progressObserver: CoreEventObserver;
     protected sections: CoreCourseWSSection[] = []; // List of course sections.
@@ -104,6 +106,9 @@ export default class CoreCourseIndexPage implements OnInit, OnDestroy {
             this.updateProgress();
         }, siteId);
 
+        this.fullScreenObserver = CoreEvents.on(CoreEvents.FULL_SCREEN_CHANGED, (event: { enabled: boolean }) => {
+            this.fullScreenEnabled = event.enabled;
+        });
     }
 
     /**
@@ -250,6 +255,7 @@ export default class CoreCourseIndexPage implements OnInit, OnDestroy {
         CoreNavigator.decreaseRouteDepth(path.replace(/(\/deep)+/, ''));
         this.selectTabObserver?.off();
         this.progressObserver?.off();
+        this.fullScreenObserver?.off();
     }
 
     /**

src/core/singletons/events.ts

@@ -122,9 +122,6 @@ export class CoreEvents {
     static readonly COURSE_MODULE_VIEWED = 'course_module_viewed';
     static readonly COMPLETE_REQUIRED_PROFILE_DATA_FINISHED = 'complete_required_profile_data_finished';
     static readonly MAIN_HOME_LOADED = 'main_home_loaded';
-    /**
-     * @deprecated since 5.1.0. Not used anymore.
-     */
     static readonly FULL_SCREEN_CHANGED = 'full_screen_changed';
 
     protected static logger = CoreLogger.getInstance('CoreEvents');