Added isSystemLayoutDirectionRtl() function.

BUG=150137

Review URL: https://chromiumcodereview.appspot.com/13865002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@193082 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 17 insertions, 0 deletions

diff --git a/base/android/java/src/org/chromium/base/LocaleUtils.java b/base/android/java/src/org/chromium/base/LocaleUtils.java
index e0f1829..1aa4aa8 100644
--- a/base/android/java/src/org/chromium/base/LocaleUtils.java
+++ b/base/android/java/src/org/chromium/base/LocaleUtils.java
@@ -4,6 +4,10 @@
 
 package org.chromium.base;
 
+import android.os.Build;
+import android.text.TextUtils;
+import android.view.View;
+
 import java.util.Locale;
 
 /**
@@ -54,6 +58,19 @@ public class LocaleUtils {
     }
 
     /**
+     * @return true if the system default layout direction is RTL, false otherwise.
+     *         RTL layout support is from Jelly Bean MR1, so if the version is lower
+     *         than that, it is always false.
+     */
+    public static boolean isSystemLayoutDirectionRtl() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return TextUtils.getLayoutDirectionFromLocale(Locale.getDefault())
+                    == View.LAYOUT_DIRECTION_RTL;
+        }
+        return false;
+    }
+
+    /**
      * Jni binding to base::i18n::IsRTL.
      * @return true if the current locale is right to left.
      */