Load PDF viewer only in public share pages

The PDF viewer is initialized only in public share pages for PDF files,
but it was loaded in all public pages (for example, in the public
profile page). To reduce the number of unneeded loads now it is loaded
only in public share pages instead.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

Author: danxuliu

lib/AppInfo/Application.php

@@ -31,13 +31,13 @@
 use OCA\Files_PDFViewer\Listeners\LoadPublicViewerListener;
 use OCA\Files_PDFViewer\Listeners\LoadViewerListener;
 
+use OCA\Files_Sharing\Event\BeforeTemplateRenderedEvent;
 use OCA\Viewer\Event\LoadViewer;
 
 use OCP\AppFramework\App;
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
-use OCP\AppFramework\Http\Events\BeforeTemplateRenderedEvent;
 use OCP\Security\CSP\AddContentSecurityPolicyEvent;
 
 class Application extends App implements IBootstrap {

lib/Listeners/LoadPublicViewerListener.php

@@ -27,8 +27,7 @@
 namespace OCA\Files_PDFViewer\Listeners;
 
 use OCA\Files_PDFViewer\AppInfo\Application;
-use OCP\AppFramework\Http\Events\BeforeTemplateRenderedEvent;
-use OCP\AppFramework\Http\TemplateResponse;
+use OCA\Files_Sharing\Event\BeforeTemplateRenderedEvent;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventListener;
 use OCP\Util;
@@ -39,10 +38,12 @@ public function handle(Event $event): void {
 			return;
 		}
 
-		// Make sure we are on a public page rendering
-		if ($event->getResponse()->getRenderAs() !== TemplateResponse::RENDER_AS_PUBLIC) {
+		// If the event has a scope it is not the default share page but, for
+		// example, the authentication page
+		if ($event->getScope() !== null) {
 			return;
 		}
+
 		Util::addScript(Application::APP_ID, 'files_pdfviewer-public');
 	}
 }