Add ANGLE enable to Developer Options

Allows selecting a single app to use ANGLE instead
of native drivers via Developer Options. Only non-system
apps will be listed via this interface.

Bug: 80239516
Test: make ROBOTEST_FILTER=AngleEnabledAppPreferenceControllerTest RunSettingsRoboTests
Change-Id: Iddf800cdc1a2607757ee165c456357e041c47ce5
(cherry picked from commit a3ed8214bf5903e4dea8df5f3516a95d81d8c485)

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

@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 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_ANGLE_ENABLED_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;
+
+public class AngleEnabledAppPreferenceController extends DeveloperOptionsPreferenceController
+        implements PreferenceControllerMixin, OnActivityResultListener {
+
+    private static final String ANGLE_ENABLED_APP_KEY = "angle_enabled_app";
+
+    private final DevelopmentSettingsDashboardFragment mFragment;
+    private final PackageManager mPackageManager;
+
+    public AngleEnabledAppPreferenceController(Context context,
+            DevelopmentSettingsDashboardFragment fragment) {
+        super(context);
+        mFragment = fragment;
+        mPackageManager = mContext.getPackageManager();
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return ANGLE_ENABLED_APP_KEY;
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (ANGLE_ENABLED_APP_KEY.equals(preference.getKey())) {
+            // pass it on to settings
+            final Intent intent = getActivityStartIntent();
+            mFragment.startActivityForResult(intent, REQUEST_CODE_ANGLE_ENABLED_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_ANGLE_ENABLED_APP || resultCode != Activity.RESULT_OK) {
+            return false;
+        }
+        Settings.Global.putString(mContext.getContentResolver(), Settings.Global.ANGLE_ENABLED_APP,
+                data.getAction());
+        updatePreferenceSummary();
+        return true;
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        super.onDeveloperOptionsSwitchDisabled();
+        mPreference.setSummary(mContext.getResources().getString(
+                R.string.angle_enabled_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 angleEnabledApp = Settings.Global.getString(
+                mContext.getContentResolver(), Settings.Global.ANGLE_ENABLED_APP);
+        if (angleEnabledApp != null && angleEnabledApp.length() > 0) {
+            mPreference.setSummary(mContext.getResources().getString(
+                    R.string.angle_enabled_app_set,
+                    getAppLabel(angleEnabledApp)));
+        } else {
+            mPreference.setSummary(mContext.getResources().getString(
+                    R.string.angle_enabled_app_not_set));
+        }
+    }
+
+    private String getAppLabel(String angleEnabledApp) {
+        try {
+            final ApplicationInfo ai = mPackageManager.getApplicationInfo(angleEnabledApp,
+                    PackageManager.GET_DISABLED_COMPONENTS);
+            final CharSequence lab = mPackageManager.getApplicationLabel(ai);
+            return lab != null ? lab.toString() : angleEnabledApp;
+        } catch (PackageManager.NameNotFoundException e) {
+            return angleEnabledApp;
+        }
+    }
+}

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

@@ -25,4 +25,6 @@ public interface DevelopmentOptionsActivityRequestCodes {
     int REQUEST_CODE_DEBUG_APP = 1;
 
     int REQUEST_MOCK_LOCATION_APP = 2;
+
+    int REQUEST_CODE_ANGLE_ENABLED_APP = 3;
 }

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

@@ -405,6 +405,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new SelectDebugAppPreferenceController(context, fragment));
         controllers.add(new WaitForDebuggerPreferenceController(context));
         controllers.add(new EnableGpuDebugLayersPreferenceController(context));
+        controllers.add(new AngleEnabledAppPreferenceController(context, fragment));
         controllers.add(new VerifyAppsOverUsbPreferenceController(context));
         controllers.add(new LogdSizePreferenceController(context));
         controllers.add(new LogPersistPreferenceController(context, fragment, lifecycle));