MOBILE-3099 fab: Adapt fab to add correct paddings

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

@@ -22,6 +22,7 @@
     .menu,
     .content-outlet {
         top: var(--offset-top);
+        height: calc(100% - var(--offset-top));
         right: 0;
         bottom: 0;
         left: 0;

src/core/directives/fab.ts

@@ -12,8 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { Directive, ElementRef, OnDestroy } from '@angular/core';
+import { Directive, ElementRef, OnDestroy, OnInit } from '@angular/core';
-import { IonContent } from '@ionic/angular';
+import { CoreUtils } from '@services/utils/utils';
 
 /**
  * Directive to move ion-fab components as direct children of the nearest ion-content.
@@ -25,47 +25,50 @@ import { IonContent } from '@ionic/angular';
 @Directive({
     selector: 'ion-fab[core-fab]',
 })
-export class CoreFabDirective implements OnDestroy {
+export class CoreFabDirective implements OnInit, OnDestroy {
 
-    protected static readonly PADDINGBOTTOM = 56;
-
-    protected scrollElement?: HTMLElement;
-    protected done = false;
     protected element: HTMLElement;
+    protected content?: HTMLIonContentElement | null;
+    protected initialPaddingBottom = 0;
 
-    constructor(el: ElementRef, protected content: IonContent) {
+    constructor(el: ElementRef) {
         this.element = el.nativeElement;
-        this.asyncInit();
+        this.element.setAttribute('slot', 'fixed');
     }
 
     /**
-     * Initialize Component.
+     * @inheritdoc
      */
-    async asyncInit(): Promise<void> {
+    async ngOnInit(retries = 3): Promise<void> {
-        if (this.content) {
+        this.content = this.element.closest('ion-content');
-            this.scrollElement = await this.content.getScrollElement();
+        if (!this.content) {
-            if (!this.done) {
+            if(retries > 0) {
-                // Move element to the nearest ion-content if it's not the parent
+                await CoreUtils.nextTicks(50);
-                if (this.element.parentElement?.nodeName != 'ION-CONTENT') {
-                    const ionContent = this.element.closest('ion-content');
-                    ionContent?.appendChild(this.element);
-                }
 
-                // Add space at the bottom to let the user see the whole content.
+                this.ngOnInit(retries - 1);
-                const bottom = parseInt(this.scrollElement.style.paddingBottom, 10) || 0;
-                this.scrollElement.style.paddingBottom = (bottom + CoreFabDirective.PADDINGBOTTOM) + 'px';
-                this.done = true;
             }
+
+            return;
         }
+
+        const initialHeight = this.element.getBoundingClientRect().height || 56;
+
+        // Move element to the nearest ion-content if it's not the parent
+        if (this.element.parentElement?.nodeName != 'ION-CONTENT') {
+            this.content.appendChild(this.element);
+        }
+
+        // Add space at the bottom to let the user see the whole content.
+        this.initialPaddingBottom = parseFloat(this.content.style.getPropertyValue('--padding-bottom') || '0');
+        this.content.style.setProperty('--padding-bottom', this.initialPaddingBottom + initialHeight + 'px');
     }
 
     /**
-     * Destroy component.
+     * @inheritdoc
      */
     ngOnDestroy(): void {
-        if (this.done && this.scrollElement) {
+        if (this.content) {
-            const bottom = parseInt(this.scrollElement.style.paddingBottom, 10) || 0;
+            this.content.style.setProperty('--padding-bottom', this.initialPaddingBottom + 'px');
-            this.scrollElement.style.paddingBottom = (bottom - CoreFabDirective.PADDINGBOTTOM) + 'px';
         }
     }
 

src/theme/theme.base.scss

@@ -906,13 +906,16 @@ ion-back-button.md::part(text) {
     display: none;
 }
 
+// Hide close button because when present is read on voice over.
 ion-fab[core-fab] {
-    position: fixed;
-    
-    // Hide close button because when present is read on voice over.
     ion-fab-button::part(close-icon) {
         display: none;
     }
+} 
+
+core-course-module-navigation + ion-fab {
+    bottom: calc(var(--core-course-module-navigation-height, 0px) + 10px);
+    @include core-transition(all, 200ms);
 }
 
 .core-media-adapt-width {