Merge pull request pwlin#1 from alena-n/bugfix/297-dialog-default-pos…

…ition

Fix for App crashes when trying to open a file using modal with alrea…

www/plugins.FileOpener2.js

@@ -34,7 +34,7 @@ FileOpener2.prototype.open = function (fileName, contentType, callbackContext) {
 
 FileOpener2.prototype.showOpenWithDialog = function (fileName, contentType, callbackContext) {
     contentType = contentType || '';
-    callbackContext = callbackContext || {};
+    callbackContext = {...callbackContext, position: callbackContext.position ? callbackContext.position : [0, 0]};
     exec(callbackContext.success || null, callbackContext.error || null, 'FileOpener2', 'open', [fileName, contentType, false, callbackContext.position]);
 };