Handle error when loading PDF.

static/js/directives/pdfcanvas.js

@@ -22,7 +22,7 @@ define(['require', 'underscore', 'jquery', 'pdf'], function(require, _, $, pdf)
 
 	pdf.workerSrc = require.toUrl('pdf.worker') + ".js";
 
-	return ["$compile", function($compile) {
+	return ["$compile", "translation", function($compile, translation) {
 
 		var controller = ['$scope', '$element', '$attrs', function($scope, $element, $attrs) {
 
@@ -91,6 +91,26 @@ define(['require', 'underscore', 'jquery', 'pdf'], function(require, _, $, pdf)
 						console.log("PDF loaded", doc);
 						scope.$emit("pdfLoaded", source, doc);
 					}, this));
+				}, this), _.bind(function(error) {
+					var loadErrorMessage;
+					switch (error) {
+					case "InvalidPDFException":
+						loadErrorMessage = translation._("Could not load PDF: Invalid or corrupted PDF file.");
+						break;
+					case "MissingPDFException":
+						loadErrorMessage = translation._("'Could not load PDF: Missing PDF file.");
+						break;
+					default:
+						if (error) {
+							loadErrorMessage = translation._("An error occurred while loading the PDF (%s).", error);
+						} else {
+							loadErrorMessage = translation._("An unknown error occurred while loading the PDF.");
+						}
+						break;
+					}
+					this.scope.$apply(_.bind(function(scope) {
+						scope.$emit("pdfLoadError", source, loadErrorMessage);
+					}, this));
 				}, this));
 			};
 

static/js/directives/presentation.js

@@ -50,6 +50,7 @@ define(['jquery', 'underscore', 'text!partials/presentation.html'], function($,
 
 			$scope.$on("pdfLoaded", function(event, source, doc) {
 				$scope.downloading = false;
+				$scope.hideControlsBar = !$scope.isPresenter;
 				$scope.currentPageNumber = -1;
 				if ($scope.isPresenter) {
 					$scope.$emit("showPdfPage", 1);
@@ -62,6 +63,11 @@ define(['jquery', 'underscore', 'text!partials/presentation.html'], function($,
 				$scope.presentationLoaded = true;
 			});
 
+			$scope.$on("pdfLoadError", function(event, source, errorMessage, moreInfo) {
+				$scope.downloading = false;
+				alertify.dialog.alert(errorMessage);
+			});
+
 			$scope.$watch("currentPageNumber", function(newval, oldval) {
 				$scope.$emit("showPdfPage", newval);
 			});
@@ -285,7 +291,6 @@ define(['jquery', 'underscore', 'text!partials/presentation.html'], function($,
 				});
 				uploadPresentation(fileInfo);
 				$scope.isPresenter = true;
-				$scope.hideControlsBar = false;
 				$scope.currentFileInfo = fileInfo;
 				$scope.receivedPage = null;
 				$scope.$emit("openPdf", file);