Slices feature supports device model.

- Migrate DeviceModelPreferenceController to BasePreferenceController
- Because Slice feature enables strict mode,
  we can't do I/O(DeviceInfoUtils.getMsvSuffix) on main thread.

  Using FutureTask to get around the foreground thread restriction.

- Modify test case for new device model controller.

Test: slice uri > content://android.settings.slices/intent/my_device_model
Test: make RunSettingsRoboTests -j
      atest UniquePreferenceTest SettingsGatewayTest

Change-Id: Idafc132dfa14138ad5a7edd58e63c4b0f644c994

src/com/android/settings/deviceinfo/DeviceInfoSettings.java

@@ -21,7 +21,6 @@ import android.app.Fragment;
 import android.content.Context;
 import android.content.Intent;
 import android.provider.SearchIndexableResource;
-import androidx.annotation.VisibleForTesting;
 import android.telephony.TelephonyManager;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
@@ -41,6 +40,8 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
+import androidx.annotation.VisibleForTesting;
+
 @SearchIndexable
 public class DeviceInfoSettings extends DashboardFragment implements Indexable {
 
@@ -57,6 +58,7 @@ public class DeviceInfoSettings extends DashboardFragment implements Indexable {
     public void onAttach(Context context) {
         super.onAttach(context);
         use(FirmwareVersionPreferenceController.class).setHost(this /*parent*/);
+        use(DeviceModelPreferenceController.class).setHost(this /* parent */);
     }
 
     @Override
@@ -134,7 +136,6 @@ public class DeviceInfoSettings extends DashboardFragment implements Indexable {
         final List<AbstractPreferenceController> controllers = new ArrayList<>();
         controllers.add(new PhoneNumberPreferenceController(context));
         controllers.add(new SimStatusPreferenceController(context, fragment));
-        controllers.add(new DeviceModelPreferenceController(context, fragment));
         controllers.add(new ImeiInfoPreferenceController(context, fragment));
         controllers.add(new IpAddressPreferenceController(context, lifecycle));
         controllers.add(new WifiMacAddressPreferenceController(context, lifecycle));

src/com/android/settings/deviceinfo/DeviceModelPreferenceController.java

@@ -18,50 +18,54 @@ package com.android.settings.deviceinfo;
 import android.app.Fragment;
 import android.content.Context;
 import android.os.Build;
-import androidx.preference.Preference;
-import androidx.preference.PreferenceScreen;
 import android.text.TextUtils;
+import android.util.Log;
 
 import com.android.settings.R;
-import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settings.core.BasePreferenceController;
 import com.android.settingslib.DeviceInfoUtils;
-import com.android.settingslib.core.AbstractPreferenceController;
 
-public class DeviceModelPreferenceController extends AbstractPreferenceController implements
-        PreferenceControllerMixin {
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.FutureTask;
 
-    private static final String KEY_DEVICE_MODEL = "device_model";
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
 
-    private final Fragment mHost;
 
-    public DeviceModelPreferenceController(Context context, Fragment host) {
-        super(context);
-        mHost = host;
+public class DeviceModelPreferenceController extends BasePreferenceController {
+
+    private static final String TAG = "DeviceModelPrefCtrl";
+
+    private Fragment mHost;
+
+    public DeviceModelPreferenceController(Context context, String key) {
+        super(context, key);
     }
 
-    @Override
-    public boolean isAvailable() {
-        return mContext.getResources().getBoolean(R.bool.config_show_device_model);
+    public void setHost(Fragment fragment) {
+        mHost = fragment;
     }
 
     @Override
     public void displayPreference(PreferenceScreen screen) {
         super.displayPreference(screen);
-        final Preference pref = screen.findPreference(KEY_DEVICE_MODEL);
-        if (pref != null) {
-            pref.setSummary(mContext.getResources().getString(R.string.model_summary,
-                    getDeviceModel()));
-        }
     }
 
     @Override
-    public String getPreferenceKey() {
-        return KEY_DEVICE_MODEL;
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_device_model)
+                ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        return mContext.getResources().getString(R.string.model_summary, getDeviceModel());
     }
 
     @Override
     public boolean handlePreferenceTreeClick(Preference preference) {
-        if (!TextUtils.equals(preference.getKey(), KEY_DEVICE_MODEL)) {
+        if (!TextUtils.equals(preference.getKey(), getPreferenceKey())) {
             return false;
         }
         final HardwareInfoDialogFragment fragment = HardwareInfoDialogFragment.newInstance();
@@ -70,6 +74,25 @@ public class DeviceModelPreferenceController extends AbstractPreferenceControlle
     }
 
     public static String getDeviceModel() {
-        return Build.MODEL + DeviceInfoUtils.getMsvSuffix();
+        FutureTask<String> msvSuffixTask = new FutureTask<String>(new Callable<String>() {
+            @Override
+            public String call() {
+                return DeviceInfoUtils.getMsvSuffix();
+            }
+        });
+
+        msvSuffixTask.run();
+        try {
+            // Wait for msv suffix value.
+            final String msvSuffix = msvSuffixTask.get();
+            return Build.MODEL + msvSuffix;
+        } catch (ExecutionException e) {
+            Log.e(TAG, "Execution error, so we only show model name");
+        } catch (InterruptedException e) {
+            Log.e(TAG, "Interruption error, so we only show model name");
+        }
+        // If we can't get an msv suffix value successfully,
+        // it's better to return model name.
+        return Build.MODEL;
     }
 }

src/com/android/settings/deviceinfo/aboutphone/MyDeviceInfoFragment.java

@@ -82,6 +82,7 @@ public class MyDeviceInfoFragment extends DashboardFragment
     public void onAttach(Context context) {
         super.onAttach(context);
         use(FirmwareVersionPreferenceController.class).setHost(this /*parent*/);
+        use(DeviceModelPreferenceController.class).setHost(this /* parent */);
     }
 
     @Override
@@ -122,7 +123,6 @@ public class MyDeviceInfoFragment extends DashboardFragment
         }
         controllers.add(deviceNamePreferenceController);
         controllers.add(new SimStatusPreferenceController(context, fragment));
-        controllers.add(new DeviceModelPreferenceController(context, fragment));
         controllers.add(new ImeiInfoPreferenceController(context, fragment));
         controllers.add(new IpAddressPreferenceController(context, lifecycle));
         controllers.add(new WifiMacAddressPreferenceController(context, lifecycle));