Bug 302193. Tabbing gets stuck for print preview when webpage focuses an element in onload, or if user clicks in textfield with mouse. r=mats, sr=neil, a=bsmedberg

content/events/src/nsEventStateManager.cpp

@@ -4289,6 +4289,12 @@ nsEventStateManager::GetFocusedContent(nsIContent** aContent)
 NS_IMETHODIMP
 nsEventStateManager::SetFocusedContent(nsIContent* aContent)
 {
+
+  if (aContent &&
+      (!mPresContext || mPresContext->Type() == nsPresContext::eContext_PrintPreview)) {
+    return NS_OK;
+  }
+
   mCurrentFocus = aContent;
   if (mCurrentFocus)
     mLastFocus = mCurrentFocus;