From 2307e2060e3b39e09d75fbe61e578ccb5ce99221 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pwalton@mozilla.com>
Date: Tue, 3 Jan 2012 22:52:20 -0800
Subject: [PATCH] Bug 709492 - Part 1: Add a paintingSuppressed getter to
 nsIDOMWindowUtils. r=bz

---
 dom/base/nsDOMWindowUtils.cpp             | 16 ++++++++++++++++
 dom/interfaces/base/nsIDOMWindowUtils.idl |  8 +++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/dom/base/nsDOMWindowUtils.cpp b/dom/base/nsDOMWindowUtils.cpp
index 28275f3b055a..72f6a027e225 100644
--- a/dom/base/nsDOMWindowUtils.cpp
+++ b/dom/base/nsDOMWindowUtils.cpp
@@ -2039,3 +2039,19 @@ nsDOMWindowUtils::GetPCCountScriptContents(PRInt32 script, JSContext* cx, nsAStr
   result = str;
   return NS_OK;
 }
+
+NS_IMETHODIMP
+nsDOMWindowUtils::GetPaintingSuppressed(bool *aPaintingSuppressed)
+{
+  NS_ENSURE_TRUE(mWindow, NS_ERROR_FAILURE);
+  nsIDocShell *docShell = mWindow->GetDocShell();
+  NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
+
+  nsCOMPtr<nsIPresShell> presShell;
+  docShell->GetPresShell(getter_AddRefs(presShell));
+  NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
+
+  *aPaintingSuppressed = presShell->IsPaintingSuppressed();
+  return NS_OK;
+}
+
diff --git a/dom/interfaces/base/nsIDOMWindowUtils.idl b/dom/interfaces/base/nsIDOMWindowUtils.idl
index 0ab427c52f0b..1dba3ca2d980 100644
--- a/dom/interfaces/base/nsIDOMWindowUtils.idl
+++ b/dom/interfaces/base/nsIDOMWindowUtils.idl
@@ -69,7 +69,7 @@ interface nsIDOMBlob;
 interface nsIDOMFile;
 interface nsIFile;
 
-[scriptable, uuid(9df58cf3-7094-4c8d-96f2-bebd765099fe)]
+[scriptable, uuid(c1fa9c82-acf2-4b27-8ca7-7d1864e606af)]
 interface nsIDOMWindowUtils : nsISupports {
 
   /**
@@ -981,4 +981,10 @@ interface nsIDOMWindowUtils : nsISupports {
    */
   [implicit_jscontext]
   AString getPCCountScriptContents(in long script);
+
+  /**
+   * Returns true if painting is suppressed for this window and false
+   * otherwise.
+   */
+  readonly attribute boolean paintingSuppressed;
 };