From e8253dd8b3701bc81aa1f2b0cc6ac0988a32a3fc Mon Sep 17 00:00:00 2001
From: Svetoslav <svetoslavganov@google.com>
Date: Tue, 30 Apr 2013 15:57:40 -0700
Subject: [PATCH] Remove Auto-rotate screen setting if a required feature is
 missing.

It is possible that a device running Android does not support rotation,
for example a Google TV box. The change adds a check to the rotation
policy to take this into account.

bug:8051556

Change-Id: I60a2a35da148271a18873f6c70556dacab29dae9
---
 .../android/settings/AccessibilitySettings.java   | 15 +++++++++++----
 src/com/android/settings/DisplaySettings.java     |  6 ++++--
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/src/com/android/settings/AccessibilitySettings.java b/src/com/android/settings/AccessibilitySettings.java
index a4438d056a0..4ca98d8eeee 100644
--- a/src/com/android/settings/AccessibilitySettings.java
+++ b/src/com/android/settings/AccessibilitySettings.java
@@ -200,16 +200,20 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
 
         mSettingsPackageMonitor.register(getActivity(), getActivity().getMainLooper(), false);
         mSettingsContentObserver.register(getContentResolver());
-        RotationPolicy.registerRotationPolicyListener(getActivity(),
-                mRotationPolicyListener);
+        if (RotationPolicy.isRotationSupported(getActivity())) {
+            RotationPolicy.registerRotationPolicyListener(getActivity(),
+                    mRotationPolicyListener);
+        }
     }
 
     @Override
     public void onPause() {
         mSettingsPackageMonitor.unregister();
-        RotationPolicy.unregisterRotationPolicyListener(getActivity(),
-                mRotationPolicyListener);
         mSettingsContentObserver.unregister(getContentResolver());
+        if (RotationPolicy.isRotationSupported(getActivity())) {
+            RotationPolicy.unregisterRotationPolicyListener(getActivity(),
+                    mRotationPolicyListener);
+        }
         super.onPause();
     }
 
@@ -320,6 +324,9 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
         // Lock screen rotation.
         mToggleLockScreenRotationPreference =
                 (CheckBoxPreference) findPreference(TOGGLE_LOCK_SCREEN_ROTATION_PREFERENCE);
+        if (!RotationPolicy.isRotationSupported(getActivity())) {
+            mSystemsCategory.removePreference(mToggleLockScreenRotationPreference);
+        }
 
         // Speak passwords.
         mToggleSpeakPasswordPreference =
diff --git a/src/com/android/settings/DisplaySettings.java b/src/com/android/settings/DisplaySettings.java
index fb839a716ad..6c3a990efcc 100644
--- a/src/com/android/settings/DisplaySettings.java
+++ b/src/com/android/settings/DisplaySettings.java
@@ -95,9 +95,11 @@ public class DisplaySettings extends SettingsPreferenceFragment implements
 
         mAccelerometer = (CheckBoxPreference) findPreference(KEY_ACCELEROMETER);
         mAccelerometer.setPersistent(false);
-        if (RotationPolicy.isRotationLockToggleSupported(getActivity())) {
+        if (!RotationPolicy.isRotationSupported(getActivity())
+                || RotationPolicy.isRotationLockToggleSupported(getActivity())) {
             // If rotation lock is supported, then we do not provide this option in
-            // Display settings.  However, is still available in Accessibility settings.
+            // Display settings.  However, is still available in Accessibility settings,
+            // if the device supports rotation.
             getPreferenceScreen().removePreference(mAccelerometer);
         }