Merge "Introduce KeepActivitiesPreferenceController"

        controllers.add(new UsbAudioRoutingPreferenceController(context));

        controllers.add(new StrictModePreferenceController(context));

        // profile gpu rendering

        // don't keep activities

        controllers.add(new KeepActivitiesPreferenceController(context));

        // background process limit

        // background check

        // show all anrs

/*

 * Copyright (C) 2017 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 android.app.ActivityManager;

import android.app.IActivityManager;

import android.content.Context;

import android.os.RemoteException;

import android.provider.Settings;

import android.support.annotation.VisibleForTesting;

import android.support.v14.preference.SwitchPreference;

import android.support.v7.preference.Preference;

import android.support.v7.preference.PreferenceScreen;

public class KeepActivitiesPreferenceController extends DeveloperOptionsPreferenceController

        implements Preference.OnPreferenceChangeListener {

    private static final String IMMEDIATELY_DESTROY_ACTIVITIES_KEY =

            "immediately_destroy_activities";

    @VisibleForTesting

    static final int SETTING_VALUE_OFF = 0;

    private IActivityManager mActivityManager;

    private SwitchPreference mPreference;

    public KeepActivitiesPreferenceController(Context context) {

        super(context);

    }

    @Override

    public String getPreferenceKey() {

        return IMMEDIATELY_DESTROY_ACTIVITIES_KEY;

    }

    @Override

    public void displayPreference(PreferenceScreen screen) {

        super.displayPreference(screen);

        mPreference = (SwitchPreference) screen.findPreference(getPreferenceKey());

        mActivityManager = getActivityManager();

    }

    @Override

    public boolean onPreferenceChange(Preference preference, Object newValue) {

        final boolean isEnabled = (Boolean) newValue;

        writeImmediatelyDestroyActivitiesOptions(isEnabled);

        return true;

    }

    @Override

    public void updateState(Preference preference) {

        final int mode = Settings.Global.getInt(mContext.getContentResolver(),

                Settings.Global.ALWAYS_FINISH_ACTIVITIES, SETTING_VALUE_OFF);

        mPreference.setChecked(mode != SETTING_VALUE_OFF);

    }

    @Override

    protected void onDeveloperOptionsSwitchEnabled() {

        mPreference.setEnabled(true);

    }

    @Override

    protected void onDeveloperOptionsSwitchDisabled() {

        writeImmediatelyDestroyActivitiesOptions(false);

        mPreference.setEnabled(false);

        mPreference.setChecked(false);

    }

    private void writeImmediatelyDestroyActivitiesOptions(boolean isEnabled) {

        try {

            mActivityManager.setAlwaysFinish(isEnabled);

        } catch (RemoteException ex) {

            // intentional no-op

        }

    }

    @VisibleForTesting

    IActivityManager getActivityManager() {

        return ActivityManager.getService();

    }

}

/*

 * Copyright (C) 2017 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.KeepActivitiesPreferenceController.SETTING_VALUE_OFF;

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.IActivityManager;

import android.content.Context;

import android.os.RemoteException;

import android.provider.Settings;

import android.support.v14.preference.SwitchPreference;

import android.support.v7.preference.PreferenceScreen;

import com.android.settings.TestConfig;

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.annotation.Config;

@RunWith(SettingsRobolectricTestRunner.class)

@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)

public class KeepActivitiesPreferenceControllerTest {

    private static final int SETTING_VALUE_ON = 1;

    @Mock

    private SwitchPreference mPreference;

    @Mock

    private PreferenceScreen mPreferenceScreen;

    @Mock

    private IActivityManager mActivityManager;

    private Context mContext;

    private KeepActivitiesPreferenceController mController;

    @Before

    public void setup() {

        MockitoAnnotations.initMocks(this);

        mContext = RuntimeEnvironment.application;

        mController = spy(new KeepActivitiesPreferenceController(mContext));

        doReturn(mActivityManager).when(mController).getActivityManager();

        when(mPreferenceScreen.findPreference(mController.getPreferenceKey())).thenReturn(

                mPreference);

        mController.displayPreference(mPreferenceScreen);

    }

    @Test

    public void onPreferenceChanged_settingEnabled_turnOnDestroyActivities()

            throws RemoteException {

        mController.onPreferenceChange(mPreference, true /* new value */);

        verify(mActivityManager).setAlwaysFinish(true);

    }

    @Test

    public void onPreferenceChanged_settingDisabled_turnOffDestroyActivities()

            throws RemoteException {

        mController.onPreferenceChange(mPreference, false /* new value */);

        verify(mActivityManager).setAlwaysFinish(false);

    }

    @Test

    public void updateState_settingEnabled_preferenceShouldBeChecked() {

        Settings.System.putInt(mContext.getContentResolver(),

                Settings.Global.ALWAYS_FINISH_ACTIVITIES, SETTING_VALUE_ON);

        mController.updateState(mPreference);

        verify(mPreference).setChecked(true);

    }

    @Test

    public void updateState_settingDisabled_preferenceShouldNotBeChecked() {

        Settings.System.putInt(mContext.getContentResolver(),

                Settings.Global.ALWAYS_FINISH_ACTIVITIES, SETTING_VALUE_OFF);

        mController.updateState(mPreference);

        verify(mPreference).setChecked(false);

    }

    @Test

    public void onDeveloperOptionsDisabled_shouldDisablePreference() throws RemoteException {

        mController.onDeveloperOptionsSwitchDisabled();

        verify(mActivityManager).setAlwaysFinish(false);

        verify(mPreference).setEnabled(false);

        verify(mPreference).setChecked(false);

    }

    @Test

    public void onDeveloperOptionsEnabled_shouldEnablePreference() {

        mController.onDeveloperOptionsSwitchEnabled();

        verify(mPreference).setEnabled(true);

    }

}