MOBILE-4616 chore: Always use convertTextToHTMLElement to convert HTML

src/addons/filter/displayh5p/services/handlers/displayh5p.ts

@@ -20,7 +20,7 @@ import { makeSingleton } from '@singletons';
 import { CoreH5PPlayerComponent } from '@features/h5p/components/h5p-player/h5p-player';
 import { CoreUrl } from '@singletons/url';
 import { CoreH5PHelper } from '@features/h5p/classes/helper';
-import { CoreTemplateElement } from '@/core/utils/create-html-element';
+import { CoreText } from '@singletons/text';
 
 /**
  * Handler to support the Display H5P filter.
@@ -37,9 +37,8 @@ export class AddonFilterDisplayH5PHandlerService extends CoreFilterDefaultHandle
     filter(
         text: string,
     ): string | Promise<string> {
-        CoreTemplateElement.innerHTML = text;
+        return CoreText.processHTML(text, (element) => {
-
+            const h5pIframes = <HTMLIFrameElement[]> Array.from(element.querySelectorAll('iframe.h5p-iframe'));
-        const h5pIframes = <HTMLIFrameElement[]> Array.from(CoreTemplateElement.content.querySelectorAll('iframe.h5p-iframe'));
 
             // Replace all iframes with an empty div that will be treated in handleHtml.
             h5pIframes.forEach((iframe) => {
@@ -53,7 +52,7 @@ export class AddonFilterDisplayH5PHandlerService extends CoreFilterDefaultHandle
 
             // Handle H5P iframes embedded using the embed HTML code.
             const embeddedH5PIframes = <HTMLIFrameElement[]> Array.from(
-            CoreTemplateElement.content.querySelectorAll('iframe.h5p-player'),
+                element.querySelectorAll('iframe.h5p-player'),
             );
 
             embeddedH5PIframes.forEach((iframe) => {
@@ -70,8 +69,7 @@ export class AddonFilterDisplayH5PHandlerService extends CoreFilterDefaultHandle
                     iframe.style.height = '400px';
                 }
             });
-
+        });
-        return CoreTemplateElement.innerHTML;
     }
 
     /**

src/addons/filter/mediaplugin/services/handlers/mediaplugin.ts

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { CoreTemplateElement } from '@/core/utils/create-html-element';
+import { CoreText } from '@singletons/text';
 import { AddonFilterMediaPluginVideoJS } from '@addons/filter/mediaplugin/services/videojs';
 import { Injectable } from '@angular/core';
 
@@ -33,15 +33,13 @@ export class AddonFilterMediaPluginHandlerService extends CoreFilterDefaultHandl
      * @inheritdoc
      */
     filter(text: string): string | Promise<string> {
-        CoreTemplateElement.innerHTML = text;
+        return CoreText.processHTML(text, (element) => {
-
+            const videos = Array.from(element.querySelectorAll('video'));
-        const videos = Array.from(CoreTemplateElement.content.querySelectorAll('video'));
 
             videos.forEach((video) => {
                 AddonFilterMediaPluginVideoJS.treatYoutubeVideos(video);
             });
-
+        });
-        return CoreTemplateElement.innerHTML;
     }
 
     /**

src/core/services/utils/dom.ts

@@ -55,7 +55,7 @@ import { CorePopovers, OpenPopoverOptions } from '@services/popovers';
 import { CoreViewer } from '@features/viewer/services/viewer';
 import { CoreLoadings } from '@services/loadings';
 import { CoreErrorHelper, CoreErrorObject } from '@services/error-helper';
-import { convertTextToHTMLElement, CoreTemplateElement } from '@/core/utils/create-html-element';
+import { convertTextToHTMLElement } from '@/core/utils/create-html-element';
 import { CoreHTMLClasses } from '@singletons/html-classes';
 
 /*
@@ -197,7 +197,7 @@ export class CoreDomUtilsProvider {
      * @param html Text to convert.
      * @returns Element.
      *
-     * @deprecated since 4.5. Use convertToElement directly instead.
+     * @deprecated since 4.5. Use convertTextToHTMLElement directly instead.
      */
     convertToElement(html: string): HTMLElement {
         return convertTextToHTMLElement(html);
@@ -262,8 +262,7 @@ export class CoreDomUtilsProvider {
      * @returns Fixed HTML text.
      */
     fixHtml(html: string): string {
-        CoreTemplateElement.innerHTML = html;
+        return CoreText.processHTML(html, (element) => {
-
             // eslint-disable-next-line no-control-regex
             const attrNameRegExp = /[^\x00-\x20\x7F-\x9F"'>/=]+/;
             const fixElement = (element: Element): void => {
@@ -277,9 +276,9 @@ export class CoreDomUtilsProvider {
                 Array.from(element.children).forEach(fixElement);
             };
 
-        Array.from(CoreTemplateElement.content.children).forEach(fixElement);
+            Array.from(element.children).forEach(fixElement);
+        });
 
-        return CoreTemplateElement.innerHTML;
     }
 
     /**

src/core/singletons/dom.ts

@@ -17,7 +17,7 @@ import { CoreUtils } from '@services/utils/utils';
 import { CoreEventObserver } from '@singletons/events';
 import { CorePlatform } from '@services/platform';
 import { CoreWait } from './wait';
-import { CoreTemplateElement } from '../utils/create-html-element';
+import { convertTextToHTMLElement } from '../utils/create-html-element';
 
 /**
  * Singleton with helper functions for dom.
@@ -118,9 +118,9 @@ export class CoreDom {
             return true;
         }
 
-        CoreTemplateElement.innerHTML = content;
+        const element = convertTextToHTMLElement(content);
 
-        return !CoreDom.elementHasContent(CoreTemplateElement.content);
+        return !CoreDom.elementHasContent(element);
     }
 
     /**

src/core/utils/create-html-element.ts

@@ -12,18 +12,17 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// A template element to convert HTML to element.
-export const CoreTemplateElement: HTMLTemplateElement = document.createElement('template');
-
 /**
- * Convert some HTML as text into an HTMLElement. This HTML is put inside a div or a body.
+ * Convert some HTML as text into an HTMLElement. This HTML is put inside a div.
  *
  * @param html Text to convert.
  * @returns Element.
  */
 export function convertTextToHTMLElement(html: string): HTMLElement {
-   // Add a div to hold the content, that's the element that will be returned.
+    const element = document.createElement('template');
-   CoreTemplateElement.innerHTML = '<div>' + html + '</div>';
 
-   return <HTMLElement> CoreTemplateElement.content.children[0];
+    // Add a div to hold the content, that's the element that will be returned.
+    element.innerHTML = '<div>' + html + '</div>';
+
+    return <HTMLElement> element.content.children[0];
 }