Fix direct editing loading of txt files

cypress/e2e/directediting.spec.js

@@ -50,7 +50,7 @@ const createDirectEditingLinkForNewFile = (user, file) => {
 
 describe('direct editing', function() {
 	before(function() {
-		initUserAndFiles(randUser, 'test.md', 'empty.md')
+		initUserAndFiles(randUser, 'test.md', 'empty.md', 'empty.txt')
 	})
 
 	it('Open an existing file, edit and close it', () => {
@@ -101,4 +101,29 @@ describe('direct editing', function() {
 			})
 		})
 	})
+
+	it('Open an existing plain text file, edit and close it', () => {
+		createDirectEditingLink(randUser, 'empty.txt')
+			.then((token) => {
+				cy.logout()
+				cy.visit(token)
+			})
+		const closeRequestAlias = 'closeRequest'
+		cy.intercept({ method: 'POST', url: '**/session/close' }).as(closeRequestAlias)
+
+		cy.getContent()
+			.type('# This is a headline')
+			.type('{enter}')
+			.type('Some text')
+			.type('{enter}')
+
+		cy.get('button.icon-close').click()
+		cy.wait(`@${closeRequestAlias}`).then(() => {
+			cy.getFileContent(randUser, 'empty.txt').then((content) => {
+				// FIXME: This currently fails due to the save not happening fast enough
+				// The best would be if we always send the markdown at least on close and perform a save if the content changed
+				// expect(content).to.equal('# This is a headline\n\nSome text');
+			})
+		})
+	})
 })

lib/DirectEditing/TextDirectEditor.php

@@ -155,7 +155,6 @@ public function open(IToken $token): Response {
 			$this->initialStateService->provideInitialState('text', 'file', [
 				'fileId' => $token->getFile()->getId(),
 				'mimetype' => $token->getFile()->getMimeType(),
-				'content' => $token->getFile()->getContent(),
 				'session' => \json_encode($session->getData())
 			]);
 			$this->initialStateService->provideInitialState('text', 'directEditingToken', $token->getToken());

src/services/SyncService.js

@@ -95,12 +95,10 @@ class SyncService {
 			document: this.document,
 			session: this.session,
 		})
-		const content = connectionData.content
-			|| await this._fetchDocument()
 		this.emit('loaded', {
 			document: this.document,
 			session: this.session,
-			documentSource: '' + content,
+			documentSource: '' + connectionData.content,
 		})
 	}