Additional check to ensure pdfViewer object is defined before handleMouseWheel event accesses its property isInPresentationMode

This commit is contained in:
Shain Lafazan 2016-11-03 12:25:16 -07:00
parent 9f8d67475e
commit 7fec8de502

View File

@ -2000,7 +2000,7 @@ function webViewerPageChanging(e) {
var zoomDisabled = false, zoomDisabledTimeout; var zoomDisabled = false, zoomDisabledTimeout;
function handleMouseWheel(evt) { function handleMouseWheel(evt) {
var pdfViewer = PDFViewerApplication.pdfViewer; var pdfViewer = PDFViewerApplication.pdfViewer;
if (pdfViewer.isInPresentationMode) { if (!pdfViewer || pdfViewer.isInPresentationMode) {
return; return;
} }