Add developer option to opt-in updatable graphics driver.

To facilitate developers to develop their applications against the updated
graphics driver, we provide a developer option to select one application to
opt-in. The selected application will always use updated graphics driver by
default.

BUG: 119221883
Test: Build, flash, boot, select a game and verify with prototype.
Change-Id: I8c3905fd5c1cbfb3ce12e589b48f57396c7776e3

res/values/strings.xml

@@ -9964,6 +9964,13 @@
     <!-- UI debug setting: ANGLE enabled app has been set [CHAR LIMIT=NONE] -->
     <string name="angle_enabled_app_set">ANGLE enabled application: <xliff:g id="app_name" example="com.company.app">%1$s</xliff:g></string>
 
+    <!-- UI debug setting: select an app to use updated graphics driver [CHAR LIMIT=100] -->
+    <string name="updated_gfx_driver_dev_opt_in_app">Select app to use updated graphics driver</string>
+    <!-- UI debug setting: no app selected to use updated GPU driver [CHAR LIMIT=100] -->
+    <string name="updated_gfx_driver_dev_opt_in_app_not_set">No selected app to use updated graphics driver</string>
+    <!-- UI debug setting: app selected to use updated graphics driver [CHAR LIMIT=NONE] -->
+    <string name="updated_gfx_driver_dev_opt_in_app_set">Opt in application: <xliff:g id="app_name" example="com.company.app">%1$s</xliff:g></string>
+
     <!-- Slices Strings -->
 
     <!-- Summary text on a card explaining that a setting does not exist / is not supported on the device [CHAR_LIMIT=NONE]-->

res/xml/development_settings.xml

@@ -422,6 +422,10 @@
         <Preference android:key="angle_enabled_app"
             android:title="@string/angle_enabled_app" />
 
+        <Preference android:key="updated_gfx_driver_dev_opt_in_app"
+            android:summary="@string/updated_gfx_driver_dev_opt_in_app_summary"
+            android:title="@string/updated_gfx_driver_dev_opt_in_app" />
+
     </PreferenceCategory>
 
     <PreferenceCategory

src/com/android/settings/development/DevelopmentOptionsActivityRequestCodes.java

@@ -27,4 +27,6 @@ public interface DevelopmentOptionsActivityRequestCodes {
     int REQUEST_MOCK_LOCATION_APP = 2;
 
     int REQUEST_CODE_ANGLE_ENABLED_APP = 3;
+
+    int REQUEST_CODE_UPDATED_GFX_DRIVER_DEV_OPT_IN_APP = 4;
 }

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -406,6 +406,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new WaitForDebuggerPreferenceController(context));
         controllers.add(new EnableGpuDebugLayersPreferenceController(context));
         controllers.add(new AngleEnabledAppPreferenceController(context, fragment));
+        controllers.add(new UpdatedGfxDriverDevOptInPreferenceController(context, fragment));
         controllers.add(new VerifyAppsOverUsbPreferenceController(context));
         controllers.add(new LogdSizePreferenceController(context));
         controllers.add(new LogPersistPreferenceController(context, fragment, lifecycle));

src/com/android/settings/development/UpdatedGfxDriverDevOptInPreferenceController.java

@@ -0,0 +1,124 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.development;
+
+import static com.android.settings.development.DevelopmentOptionsActivityRequestCodes
+        .REQUEST_CODE_UPDATED_GFX_DRIVER_DEV_OPT_IN_APP;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.provider.Settings;
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+// TODO(b/119221883): Need to override isAvailable() to return false when updatable graphics driver is not supported.
+public class UpdatedGfxDriverDevOptInPreferenceController
+        extends DeveloperOptionsPreferenceController
+        implements PreferenceControllerMixin, OnActivityResultListener {
+
+    private static final String UPDATED_GFX_DRIVER_DEV_OPT_IN_APP_KEY =
+            "updated_gfx_driver_dev_opt_in_app";
+
+    private final DevelopmentSettingsDashboardFragment mFragment;
+    private final PackageManager mPackageManager;
+
+    public UpdatedGfxDriverDevOptInPreferenceController(Context context,
+            DevelopmentSettingsDashboardFragment fragment) {
+        super(context);
+        mFragment = fragment;
+        mPackageManager = mContext.getPackageManager();
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return UPDATED_GFX_DRIVER_DEV_OPT_IN_APP_KEY;
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (UPDATED_GFX_DRIVER_DEV_OPT_IN_APP_KEY.equals(preference.getKey())) {
+            // pass it on to settings
+            final Intent intent = getActivityStartIntent();
+            mFragment.startActivityForResult(intent,
+                    REQUEST_CODE_UPDATED_GFX_DRIVER_DEV_OPT_IN_APP);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        updatePreferenceSummary();
+    }
+
+    @Override
+    public boolean onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (requestCode != REQUEST_CODE_UPDATED_GFX_DRIVER_DEV_OPT_IN_APP
+                || resultCode != Activity.RESULT_OK) {
+            return false;
+        }
+        Settings.Global.putString(mContext.getContentResolver(),
+                Settings.Global.UPDATED_GFX_DRIVER_DEV_OPT_IN_APP, data.getAction());
+        updatePreferenceSummary();
+        return true;
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        super.onDeveloperOptionsSwitchDisabled();
+        mPreference.setSummary(mContext.getResources().getString(
+                R.string.updated_gfx_driver_dev_opt_in_app_not_set));
+    }
+
+    @VisibleForTesting
+    Intent getActivityStartIntent() {
+        Intent intent = new Intent(mContext, AppPicker.class);
+        intent.putExtra(AppPicker.EXTRA_NON_SYSTEM, true /* value */);
+        return intent;
+    }
+
+    private void updatePreferenceSummary() {
+        final String updatedGfxDriverDevOptInApp = Settings.Global.getString(
+                mContext.getContentResolver(), Settings.Global.UPDATED_GFX_DRIVER_DEV_OPT_IN_APP);
+        if (updatedGfxDriverDevOptInApp != null && !updatedGfxDriverDevOptInApp.isEmpty()) {
+            mPreference.setSummary(mContext.getResources().getString(
+                    R.string.updated_gfx_driver_dev_opt_in_app_set,
+                    getAppLabel(updatedGfxDriverDevOptInApp)));
+        } else {
+            mPreference.setSummary(mContext.getResources().getString(
+                    R.string.updated_gfx_driver_dev_opt_in_app_not_set));
+        }
+    }
+
+    private String getAppLabel(String applicationPackageName) {
+        try {
+            final ApplicationInfo ai = mPackageManager.getApplicationInfo(applicationPackageName,
+                    PackageManager.GET_DISABLED_COMPONENTS);
+            final CharSequence lab = mPackageManager.getApplicationLabel(ai);
+            return lab != null ? lab.toString() : applicationPackageName;
+        } catch (PackageManager.NameNotFoundException e) {
+            return applicationPackageName;
+        }
+    }
+}

tests/robotests/src/com/android/settings/development/UpdatedGfxDriverDevOptInPreferenceControllerTest.java

@@ -0,0 +1,131 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.development;
+
+import static com.android.settings.development.DevelopmentOptionsActivityRequestCodes.REQUEST_CODE_UPDATED_GFX_DRIVER_DEV_OPT_IN_APP;
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.Activity;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.provider.Settings;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.util.ReflectionHelpers;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class UpdatedGfxDriverDevOptInPreferenceControllerTest {
+
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+    @Mock
+    private DevelopmentSettingsDashboardFragment mFragment;
+
+    private Context mContext;
+    private Preference mPreference;
+    private UpdatedGfxDriverDevOptInPreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = spy(new UpdatedGfxDriverDevOptInPreferenceController(mContext, mFragment));
+        mPreference = new Preference(mContext);
+        mPreference.setKey(mController.getPreferenceKey());
+
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey()))
+            .thenReturn(mPreference);
+        mController.displayPreference(mPreferenceScreen);
+    }
+
+    @Test
+    public void handlePreferenceTreeClick_preferenceClicked_launchActivity() {
+        final Intent activityStartIntent = new Intent(mContext, AppPicker.class);
+        final String preferenceKey = mController.getPreferenceKey();
+        doReturn(activityStartIntent).when(mController).getActivityStartIntent();
+        mController.handlePreferenceTreeClick(mPreference);
+
+        verify(mFragment).startActivityForResult(activityStartIntent,
+                REQUEST_CODE_UPDATED_GFX_DRIVER_DEV_OPT_IN_APP);
+    }
+
+    @Test
+    public void updateState_foobarAppSelected_shouldUpdateSummaryWithUpdatedDriverDevOptInAppLabel() {
+        final String selectedApp = "foobar";
+        final ContentResolver contentResolver = mContext.getContentResolver();
+        Settings.Global.putString(contentResolver,
+                Settings.Global.UPDATED_GFX_DRIVER_DEV_OPT_IN_APP, selectedApp);
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.getSummary()).isEqualTo(mContext.getString(R.string.updated_gfx_driver_dev_opt_in_app_set, selectedApp));
+    }
+
+    @Test
+    public void updateState_noAppSelected_shouldUpdateSummaryWithNoAppSelected() {
+        final String selectedApp = null;
+        final ContentResolver contentResolver = mContext.getContentResolver();
+        Settings.Global.putString(contentResolver,
+                Settings.Global.UPDATED_GFX_DRIVER_DEV_OPT_IN_APP, selectedApp);
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.getSummary()).isEqualTo(mContext.getString(R.string.updated_gfx_driver_dev_opt_in_app_not_set));
+    }
+
+    @Test
+    public void onActivityResult_foobarAppSelected_shouldUpdateSummaryWithUpdatedDriverDevOptInLabel() {
+        Intent activityResultIntent = new Intent(mContext, AppPicker.class);
+        final String appLabel = "foobar";
+        activityResultIntent.setAction(appLabel);
+        final boolean result = mController
+            .onActivityResult(REQUEST_CODE_UPDATED_GFX_DRIVER_DEV_OPT_IN_APP, Activity.RESULT_OK,
+                    activityResultIntent);
+
+        assertThat(result).isTrue();
+        assertThat(mPreference.getSummary()).isEqualTo(mContext.getString(R.string.updated_gfx_driver_dev_opt_in_app_set, appLabel));
+    }
+
+    @Test
+    public void onActivityResult_badRequestCode_shouldReturnFalse() {
+        assertThat(mController.onActivityResult(
+                -1 /* requestCode */, -1 /* resultCode */, null /* intent */)).isFalse();
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsSwitchDisabled();
+
+        assertThat(mPreference.isEnabled()).isFalse();
+        assertThat(mPreference.getSummary()).isEqualTo(mContext.getString(R.string.updated_gfx_driver_dev_opt_in_app_not_set));
+    }
+}