From c67e7e8f85ae9c05d1a04715d2a9ce7e84a50a45 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Thu, 17 Dec 2015 09:32:18 -0500
Subject: [PATCH] Fix PDF support detection in Firefox > 19 (#1490610)

---
 program/js/app.js |   31 +++++++++++++++++++------------
 1 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index 5d39a0f..1d6bf22 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -8155,14 +8155,10 @@
     if (!this.env.browser_capabilities)
       this.env.browser_capabilities = {};
 
-    if (this.env.browser_capabilities.pdf === undefined)
-      this.env.browser_capabilities.pdf = this.pdf_support_check();
-
-    if (this.env.browser_capabilities.flash === undefined)
-      this.env.browser_capabilities.flash = this.flash_support_check();
-
-    if (this.env.browser_capabilities.tif === undefined)
-      this.tif_support_check();
+    $.each(['pdf', 'flash', 'tif'], function() {
+      if (ref.env.browser_capabilities[this] === undefined)
+        ref.env.browser_capabilities[this] = ref[this + '_support_check']();
+    });
   };
 
   // Returns browser capabilities string
@@ -8181,11 +8177,14 @@
 
   this.tif_support_check = function()
   {
-    var img = new Image();
+    window.setTimeout(function() {
+      var img = new Image();
+      img.onload = function() { ref.env.browser_capabilities.tif = 1; };
+      img.onerror = function() { ref.env.browser_capabilities.tif = 0; };
+      img.src = ref.assets_path('program/resources/blank.tif');
+    }, 10);
 
-    img.onload = function() { ref.env.browser_capabilities.tif = 1; };
-    img.onerror = function() { ref.env.browser_capabilities.tif = 0; };
-    img.src = this.assets_path('program/resources/blank.tif');
+    return 0;
   };
 
   this.pdf_support_check = function()
@@ -8221,6 +8220,14 @@
         return 1;
     }
 
+    window.setTimeout(function() {
+      $('<object>').css({position: 'absolute', left: '-10000px'})
+        .attr({data: ref.assets_path('program/resources/dummy.pdf'), width: 1, height: 1, type: 'application/pdf'})
+        .load(function() { ref.env.browser_capabilities.pdf = 1; })
+        .error(function() { ref.env.browser_capabilities.pdf = 0; })
+        .appendTo($('body'));
+      }, 10);
+
     return 0;
   };
 

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