From 50a6b24222642353201b7f74035f9d59f18af3a4 Mon Sep 17 00:00:00 2001
From: Console Chen <consolechen@google.com>
Date: Fri, 11 Jan 2019 14:50:51 +0800
Subject: [PATCH] Gives unvailable slice of Night Light a customized subtitle

When a slice depends on some setting and the setting is off,
it shows "depends on another setting".
Base on the new introduced attribute on ag/5843828 , assigns
customized subtitle for showing the unavailabe slice when the
Night Light is off.

Change-Id: I5c3530281fac4ef63caf2d3ac8e2be872d704bcb
Fixes: 118399193
Test: Manual
---
 res/values/strings.xml             | 2 ++
 res/xml/night_display_settings.xml | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/res/values/strings.xml b/res/values/strings.xml
index c6aded35479..f45bd9e0d8e 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2715,6 +2715,8 @@
     <string name="night_display_activation_on_custom">Turn on until <xliff:g name="time" example="6 AM">%1$s</xliff:g></string>
     <!-- Display settings screen, deactivation button action for custom schedule [CHAR LIMIT=40] -->
     <string name="night_display_activation_off_custom">Turn off until <xliff:g name="time" example="10 PM">%1$s</xliff:g></string>
+    <!-- Night display slice screen, subtitle of intensity setting when night light is off. [CHAR LIMIT=30] -->
+    <string name="night_display_not_currently_on">Night Light not currently on</string>
 
     <!-- Sound & display settings screen, setting option name to change screen timeout -->
     <string name="screen_timeout">Sleep</string>
diff --git a/res/xml/night_display_settings.xml b/res/xml/night_display_settings.xml
index b6f625174f2..07687eae5ba 100644
--- a/res/xml/night_display_settings.xml
+++ b/res/xml/night_display_settings.xml
@@ -41,7 +41,8 @@
         android:key="night_display_temperature"
         android:title="@string/night_display_temperature_title"
         settings:keywords="@string/keywords_display_night_display"
-        settings:controller="com.android.settings.display.NightDisplayIntensityPreferenceController" />
+        settings:controller="com.android.settings.display.NightDisplayIntensityPreferenceController"
+        settings:unavailableSliceSubtitle="@string/night_display_not_currently_on" />
 
     <com.android.settingslib.widget.LayoutPreference
         android:key="night_display_activated"