Add isSliceable API to BasePrefController

Only support explicitly approved Settings Slices,
dictated by controllers which return true for the new
method isSliceable.

Updating the supported settings to a whitelist means that
the method to return all available slices must be updated,
and checking slicability when we index slices.

Test: robotests
Change-Id: I85848c2cdf3e151fa94b33dd1dc5c0374ef94b5b
Merged-In: Ib2b9690cdd0036b5cc4a1cb846c52bce7c824ab9
Fixes: 79779103

src/com/android/settings/display/AmbientDisplayAlwaysOnPreferenceController.java

@@ -19,6 +19,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.os.UserHandle;
 import android.provider.Settings;
+import android.text.TextUtils;
 
 import com.android.internal.hardware.AmbientDisplayConfiguration;
 import com.android.settings.R;
@@ -53,6 +54,11 @@ public class AmbientDisplayAlwaysOnPreferenceController extends TogglePreference
         return isAvailable(mConfig) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
     }
 
+    @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), "ambient_display_always_on");
+    }
+
     @Override
     public boolean isChecked() {
         return mConfig.alwaysOnEnabled(MY_USER);

src/com/android/settings/display/AmbientDisplayNotificationsPreferenceController.java

@@ -23,6 +23,7 @@ import android.os.UserHandle;
 import android.provider.Settings;
 import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
+import android.text.TextUtils;
 
 import com.android.internal.hardware.AmbientDisplayConfiguration;
 import com.android.settings.R;
@@ -89,6 +90,11 @@ public class AmbientDisplayNotificationsPreferenceController extends
         return mConfig.pulseOnNotificationAvailable() ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
     }
 
+    @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), "ambient_display_notification");
+    }
+
     @Override
     //TODO (b/69808376): Remove result payload
     public ResultPayload getResultPayload() {

src/com/android/settings/display/AutoBrightnessPreferenceController.java

@@ -16,6 +16,7 @@ package com.android.settings.display;
 import android.content.Context;
 import android.content.Intent;
 import android.provider.Settings;
+import android.text.TextUtils;
 
 import com.android.settings.DisplaySettings;
 import com.android.settings.core.TogglePreferenceController;
@@ -60,6 +61,11 @@ public class AutoBrightnessPreferenceController extends TogglePreferenceControll
                 : UNSUPPORTED_ON_DEVICE;
     }
 
+    @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), "auto_brightness");
+    }
+
     @Override
     public ResultPayload getResultPayload() {
         // TODO remove result payload

src/com/android/settings/display/AutoRotatePreferenceController.java

@@ -15,6 +15,7 @@ package com.android.settings.display;
 
 import android.content.Context;
 import android.support.v7.preference.Preference;
+import android.text.TextUtils;
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.internal.view.RotationPolicy;
@@ -71,7 +72,12 @@ public class AutoRotatePreferenceController extends TogglePreferenceController i
     @Override
     public int getAvailabilityStatus() {
         return RotationPolicy.isRotationLockToggleVisible(mContext)
-                ? AVAILABLE : CONDITIONALLY_UNAVAILABLE;
+                ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), "auto_rotate");
     }
 
     @Override

src/com/android/settings/display/NightDisplayActivationPreferenceController.java

@@ -19,6 +19,7 @@ package com.android.settings.display;
 import android.content.Context;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceScreen;
+import android.text.TextUtils;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
@@ -53,6 +54,11 @@ public class NightDisplayActivationPreferenceController extends TogglePreference
         return ColorDisplayController.isAvailable(mContext) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
     }
 
+    @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), "night_display_activated");
+    }
+
     @Override
     public void displayPreference(PreferenceScreen screen) {
         super.displayPreference(screen);

src/com/android/settings/display/NightDisplayIntensityPreferenceController.java

@@ -19,6 +19,8 @@ package com.android.settings.display;
 import android.content.Context;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceScreen;
+import android.text.TextUtils;
+
 import com.android.internal.app.ColorDisplayController;
 import com.android.settings.core.SliderPreferenceController;
 import com.android.settings.widget.SeekBarPreference;
@@ -42,6 +44,11 @@ public class NightDisplayIntensityPreferenceController extends SliderPreferenceC
         return AVAILABLE;
     }
 
+    @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), "night_display_temperature");
+    }
+
     @Override
     public void displayPreference(PreferenceScreen screen) {
         super.displayPreference(screen);