Remove unused HelpMenuController

/*

 * 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.support.actionbar;

import static com.android.settings.support.actionbar.HelpResourceProvider.HELP_URI_RESOURCE_KEY;

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuInflater;

import androidx.annotation.NonNull;

import androidx.fragment.app.Fragment;

import com.android.settingslib.HelpUtils;

import com.android.settingslib.core.lifecycle.LifecycleObserver;

import com.android.settingslib.core.lifecycle.ObservableFragment;

import com.android.settingslib.core.lifecycle.ObservablePreferenceFragment;

import com.android.settingslib.core.lifecycle.events.OnCreateOptionsMenu;

/**

 * A controller that adds help menu to any Settings page.

 */

public class HelpMenuController implements LifecycleObserver, OnCreateOptionsMenu {

    private final Fragment mHost;

    public static void init(@NonNull ObservablePreferenceFragment host) {

        host.getSettingsLifecycle().addObserver(new HelpMenuController(host));

    }

    public static void init(@NonNull ObservableFragment host) {

        host.getSettingsLifecycle().addObserver(new HelpMenuController(host));

    }

    private HelpMenuController(@NonNull Fragment host) {

        mHost = host;

    }

    @Override

    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {

        final Bundle arguments = mHost.getArguments();

        int helpResourceId = 0;

        if (arguments != null && arguments.containsKey(HELP_URI_RESOURCE_KEY)) {

            helpResourceId = arguments.getInt(HELP_URI_RESOURCE_KEY);

        } else if (mHost instanceof HelpResourceProvider) {

            helpResourceId = ((HelpResourceProvider) mHost).getHelpResource();

        }

        String helpUri = null;

        if (helpResourceId != 0) {

            helpUri = mHost.getContext().getString(helpResourceId);

        }

        final Activity activity = mHost.getActivity();

        if (helpUri != null && activity != null) {

            HelpUtils.prepareHelpMenuItem(activity, menu, helpUri, mHost.getClass().getName());

        }

    }

}

/*

 * 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.support.actionbar;

import static org.mockito.Mockito.doReturn;

import static org.mockito.Mockito.spy;

import static org.mockito.Mockito.verify;

import android.content.Context;

import android.os.Bundle;

import com.android.settingslib.core.lifecycle.ObservablePreferenceFragment;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.Mock;

import org.mockito.MockitoAnnotations;

import org.robolectric.RobolectricTestRunner;

@RunWith(RobolectricTestRunner.class)

public class HelpMenuControllerTest {

    @Mock

    private Context mContext;

    private TestFragment mHost;

    @Before

    public void setUp() {

        MockitoAnnotations.initMocks(this);

        mHost = spy(new TestFragment());

        doReturn(mContext).when(mHost).getContext();

    }

    @Test

    public void onCreateOptionsMenu_withArgumentOverride_shouldPrepareHelpUsingOverride() {

        final Bundle bundle = new Bundle();

        bundle.putInt(HelpResourceProvider.HELP_URI_RESOURCE_KEY, 123);

        mHost.setArguments(bundle);

        HelpMenuController.init(mHost);

        mHost.getSettingsLifecycle().onCreateOptionsMenu(null /* menu */, null /* inflater */);

        verify(mContext).getString(123);

    }

    @Test

    public void onCreateOptionsMenu_noArgumentOverride_shouldPrepareHelpUsingProvider() {

        HelpMenuController.init(mHost);

        mHost.getSettingsLifecycle().onCreateOptionsMenu(null /* menu */, null /* inflater */);

        verify(mContext).getString(mHost.getHelpResource());

    }

    private static class TestFragment extends ObservablePreferenceFragment

        implements HelpResourceProvider {

        @Override

        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {

        }

    }

}