From 980959a1a0a650aa797b70805eecff14a1ffab26 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Wed, 11 Oct 2017 10:43:53 +0200
Subject: [PATCH] Bug 1170242 - On accessibility SetSelectionRange, scroll the
 selection into view. r=surkov

---
 accessible/generic/HyperTextAccessible.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/accessible/generic/HyperTextAccessible.cpp b/accessible/generic/HyperTextAccessible.cpp
index 95b04a7a601c..29551353af32 100644
--- a/accessible/generic/HyperTextAccessible.cpp
+++ b/accessible/generic/HyperTextAccessible.cpp
@@ -1336,6 +1336,13 @@ HyperTextAccessible::SetSelectionRange(int32_t aStartPos, int32_t aEndPos)
     domSel->RemoveRange(domSel->GetRangeAt(idx));
   SetSelectionBoundsAt(0, aStartPos, aEndPos);
 
+  // Make sure it is visible
+  domSel->ScrollIntoView(nsISelectionController::SELECTION_FOCUS_REGION,
+                         nsIPresShell::ScrollAxis(),
+                         nsIPresShell::ScrollAxis(),
+                         dom::Selection::SCROLL_FOR_CARET_MOVE |
+                             dom::Selection::SCROLL_OVERFLOW_HIDDEN);
+
   // When selection is done, move the focus to the selection if accessible is
   // not focusable. That happens when selection is set within hypertext
   // accessible.