From 3ae4454e2a1a6d88e67a48f1c9cce3ce571f47c1 Mon Sep 17 00:00:00 2001
From: Ting-Yu Lin <tlin@mozilla.com>
Date: Wed, 9 Sep 2015 16:47:20 +0800
Subject: [PATCH] Bug 1200194 - Make Appearance convertible to string
 representation. r=roc

--HG--
extra : commitid : KCG4QMsPhdY
extra : rebase_source : ebad97bf4ed57a5f532f94074c035ddb3dabaf47
---
 layout/base/AccessibleCaret.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/layout/base/AccessibleCaret.cpp b/layout/base/AccessibleCaret.cpp
index 8433b509b3e2..64144e67a9b2 100644
--- a/layout/base/AccessibleCaret.cpp
+++ b/layout/base/AccessibleCaret.cpp
@@ -8,6 +8,7 @@
 
 #include "AccessibleCaretLogger.h"
 #include "mozilla/Preferences.h"
+#include "mozilla/ToString.h"
 #include "nsCanvasFrame.h"
 #include "nsCaret.h"
 #include "nsDOMTokenList.h"
@@ -31,6 +32,24 @@ float AccessibleCaret::sHeight = 0.0f;
 float AccessibleCaret::sMarginLeft = 0.0f;
 float AccessibleCaret::sBarWidth = 0.0f;
 
+std::ostream&
+operator<<(std::ostream& aStream, const AccessibleCaret::Appearance& aAppearance)
+{
+  using Appearance = AccessibleCaret::Appearance;
+
+#define AC_PROCESS_APPEARANCE_TO_STREAM(e) case(e): aStream << #e; break;
+  switch (aAppearance) {
+    AC_PROCESS_APPEARANCE_TO_STREAM(Appearance::None);
+    AC_PROCESS_APPEARANCE_TO_STREAM(Appearance::Normal);
+    AC_PROCESS_APPEARANCE_TO_STREAM(Appearance::NormalNotShown);
+    AC_PROCESS_APPEARANCE_TO_STREAM(Appearance::Left);
+    AC_PROCESS_APPEARANCE_TO_STREAM(Appearance::Right);
+  }
+#undef AC_PROCESS_APPEARANCE_TO_STREAM
+
+  return aStream;
+}
+
 // -----------------------------------------------------------------------------
 // Implementation of AccessibleCaret methods
 
@@ -75,6 +94,9 @@ AccessibleCaret::SetAppearance(Appearance aAppearance)
   CaretElement()->ClassList()->Add(AppearanceString(aAppearance), rv);
   MOZ_ASSERT(!rv.Failed(), "Add new appearance failed!");
 
+  AC_LOG("%s: %s -> %s", __FUNCTION__, ToString(mAppearance).c_str(),
+         ToString(aAppearance).c_str());
+
   mAppearance = aAppearance;
 
   // Need to reset rect since the cached rect will be compared in SetPosition.