Merge pull request #4103 from yurydelendik/issue3977

Introduces disableObjectCreateURL

src/core/worker.js

@@ -231,6 +231,7 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = {
       PDFJS.maxImageSize = data.maxImageSize === undefined ?
                            -1 : data.maxImageSize;
       PDFJS.disableFontFace = data.disableFontFace;
+      PDFJS.disableCreateObjectURL = data.disableCreateObjectURL;
       PDFJS.verbosity = data.verbosity;
 
       getPdfManager(data).then(function pdfManagerReady() {

src/display/api.js

@@ -94,6 +94,13 @@ PDFJS.pdfBug = PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug;
 PDFJS.postMessageTransfers = PDFJS.postMessageTransfers === undefined ?
                              true : PDFJS.postMessageTransfers;
 
+/**
+ * Disables URL.createObjectURL usage.
+ * @var {boolean}
+ */
+PDFJS.disableCreateObjectURL = PDFJS.disableCreateObjectURL === undefined ?
+                               false : PDFJS.disableCreateObjectURL;
+
 /**
  * Controls the logging level.
  * The constants from PDFJS.VERBOSITY_LEVELS should be used:
@@ -886,6 +893,7 @@ var WorkerTransport = (function WorkerTransportClosure() {
         disableRange: PDFJS.disableRange,
         maxImageSize: PDFJS.maxImageSize,
         disableFontFace: PDFJS.disableFontFace,
+        disableCreateObjectURL: PDFJS.disableCreateObjectURL,
         verbosity: PDFJS.verbosity
       });
     },

src/shared/util.js

@@ -1179,18 +1179,17 @@ PDFJS.createBlob = function createBlob(data, contentType) {
 };
 
 PDFJS.createObjectURL = (function createObjectURLClosure() {
-  if (typeof URL !== 'undefined' && URL.createObjectURL) {
-    return function createObjectURL(data, contentType) {
-      var blob = PDFJS.createBlob(data, contentType);
-      return URL.createObjectURL(blob);
-    };
-  }
-
   // Blob/createObjectURL is not available, falling back to data schema.
   var digits =
     'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
 
   return function createObjectURL(data, contentType) {
+    if (!PDFJS.disableCreateObjectURL &&
+        typeof URL !== 'undefined' && URL.createObjectURL) {
+      var blob = PDFJS.createBlob(data, contentType);
+      return URL.createObjectURL(blob);
+    }
+
     var buffer = 'data:' + contentType + ';base64,';
     for (var i = 0, ii = data.length; i < ii; i += 3) {
       var b1 = data[i] & 0xFF;

web/compatibility.js

@@ -442,6 +442,14 @@ if (typeof PDFJS === 'undefined') {
   }
 })();
 
+// Checks if possible to use URL.createObjectURL()
+(function checkOnBlobSupport() {
+  // sometimes IE loosing the data created with createObjectURL(), see #3977
+  if (navigator.userAgent.indexOf('Trident') >= 0) {
+    PDFJS.disableCreateObjectURL = true;
+  }
+})();
+
 // Checks if navigator.language is supported
 (function checkNavigatorLanguage() {
   if ('language' in navigator)