Move PDFViewerApplication setup from helper script to Vue component

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

Author: danxuliu

src/views/PDFView.vue

@@ -35,8 +35,7 @@ export default {
 
 	computed: {
 		iframeSrc() {
-			return generateUrl('/apps/files_pdfviewer/?file={file}&hideDownload={hideDownload}', {
-				hideDownload: hideDownload() ? 1 : 0,
+			return generateUrl('/apps/files_pdfviewer/?file={file}', {
 				file: this.source ?? this.davPath,
 			})
 		},
@@ -184,6 +183,46 @@ export default {
 					this.getDownloadElement().removeAttribute('disabled')
 				}
 			})
+
+			if (hideDownload()) {
+				const pdfViewer = this.getIframeDocument().querySelector('.pdfViewer')
+
+				if (pdfViewer) {
+					pdfViewer.classList.add('disabledTextSelection')
+				}
+
+				// Disable download function when downloads are hidden, as even
+				// if the buttons in the UI are hidden the download could still
+				// be triggered with Ctrl|Meta+S.
+				this.PDFViewerApplication.download = () => {
+				}
+
+				// Disable printing service when downloads are hidden, as even
+				// if the buttons in the UI are hidden the printing could still
+				// be triggered with Ctrl|Meta+P.
+				// Abuse the "supportsPrinting" parameter, which signals that
+				// the browser does not fully support printing, to make
+				// PDFViewer disable the printing service.
+				// "supportsPrinting" is a getter function, so it needs to be
+				// deleted before replacing it with a simple value.
+				delete this.PDFViewerApplication.supportsPrinting
+				this.PDFViewerApplication.supportsPrinting = false
+
+				// When printing is not supported a warning is shown by the
+				// default "beforePrint" function when trying to print. That
+				// function needs to be replaced with an empty one to prevent
+				// that warning to be shown.
+				this.PDFViewerApplication.beforePrint = () => {
+				}
+
+				logger.info('Download, print and user interaction disabled')
+			} else {
+				logger.info('Download and print available')
+			}
+
+			const PDFViewerApplicationOptions = this.$refs.iframe.contentWindow.PDFViewerApplicationOptions
+
+			logger.debug('Initialized files_pdfviewer', PDFViewerApplicationOptions.getAll())
 		},
 
 		handleWebviewerloaded() {

src/workersrc.js

@@ -4,57 +4,7 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
-import logger from './services/logger.js'
 import redirectIfNotIframe from './utils/redirectIfNotIframe.js'
 
 // Checks if the page is displayed in an iframe. If not redirect to /.
 redirectIfNotIframe()
-
-// Retrieve the hideDownload from the url, this is
-// the most easy way to pass the prop to this iframe
-const queryString = window.location.search
-const urlParams = new URLSearchParams(queryString)
-const hideDownload = urlParams.get('hideDownload')
-
-function initializeCustomPDFViewerApplication() {
-	if (hideDownload === '1') {
-		const pdfViewer = window.document.querySelector('.pdfViewer')
-
-		if (pdfViewer) {
-			pdfViewer.classList.add('disabledTextSelection')
-		}
-
-		if (PDFViewerApplication) {
-			// Disable download function when downloads are hidden, as even if the
-			// buttons in the UI are hidden the download could still be triggered
-			// with Ctrl|Meta+S.
-			PDFViewerApplication.download = function() {
-			}
-
-			// Disable printing service when downloads are hidden, as even if the
-			// buttons in the UI are hidden the printing could still be triggered
-			// with Ctrl|Meta+P.
-			// Abuse the "supportsPrinting" parameter, which signals that the
-			// browser does not fully support printing, to make PDFViewer disable
-			// the printing service.
-			// "supportsPrinting" is a getter function, so it needs to be deleted
-			// before replacing it with a simple value.
-			delete PDFViewerApplication.supportsPrinting
-			PDFViewerApplication.supportsPrinting = false
-
-			// When printing is not supported a warning is shown by the default
-			// "beforePrint" function when trying to print. That function needs to
-			// be replaced with an empty one to prevent that warning to be shown.
-			PDFViewerApplication.beforePrint = function() {
-			}
-		}
-
-		logger.info('Download, print and user interaction disabled')
-	} else {
-		logger.info('Download and print available')
-	}
-
-	logger.debug('Initialized files_pdfviewer', PDFViewerApplicationOptions.getAll())
-}
-
-document.addEventListener('DOMContentLoaded', initializeCustomPDFViewerApplication, true)