Add base preference for new Bluetooth developer option

/*

 * Copyright (C) 2019 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.bluetooth;

import android.content.Context;

import android.util.AttributeSet;

import android.util.Log;

import android.view.View;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.TextView;

import com.android.settings.R;

import com.android.settingslib.CustomDialogPreferenceCompat;

import java.util.ArrayList;

import java.util.List;

/**

 * Abstract class for Bluetooth A2DP config preference in developer option.

 */

public abstract class BaseBluetoothDialogPreference extends CustomDialogPreferenceCompat implements

        RadioGroup.OnCheckedChangeListener{

    private static final String TAG = "BaseBluetoothDlgPref";

    protected List<Integer> mRadioButtonIds = new ArrayList<>();

    protected List<String> mRadioButtonStrings = new ArrayList<>();

    protected List<String> mSummaryStrings = new ArrayList<>();

    private Callback mCallback;

    public BaseBluetoothDialogPreference(Context context) {

        super(context);

    }

    public BaseBluetoothDialogPreference(Context context, AttributeSet attrs) {

        super(context, attrs);

    }

    public BaseBluetoothDialogPreference(Context context, AttributeSet attrs, int defStyleAttr) {

        super(context, attrs, defStyleAttr);

    }

    public BaseBluetoothDialogPreference(Context context, AttributeSet attrs, int defStyleAttr,

            int defStyleRes) {

        super(context, attrs, defStyleAttr, defStyleRes);

    }

    @Override

    protected void onBindDialogView(View view) {

        super.onBindDialogView(view);

        if (mCallback == null) {

            Log.e(TAG, "Unable to show dialog by the callback is null");

            return;

        }

        if (mRadioButtonStrings.size() != mRadioButtonIds.size()) {

            Log.e(TAG, "Unable to show dialog by the view and string size are not matched");

            return;

        }

        final int currentIndex = mCallback.getCurrentConfigIndex();

        if (currentIndex < 0 || currentIndex >= mRadioButtonIds.size()) {

            Log.e(TAG, "Unable to show dialog by the incorrect index: " + currentIndex);

            return;

        }

        // Initial radio button group

        final RadioGroup radioGroup = view.findViewById(getRadioButtonGroupId());

        if (radioGroup == null) {

            Log.e(TAG, "Unable to show dialog by no radio button group: "

                    + getRadioButtonGroupId());

            return;

        }

        radioGroup.check(mRadioButtonIds.get(currentIndex));

        radioGroup.setOnCheckedChangeListener(this);

        // Initial radio button

        final List<Integer> selectableIndex = mCallback.getSelectableIndex();

        RadioButton radioButton;

        for (int i = 0; i < mRadioButtonStrings.size(); i++) {

            radioButton = view.findViewById(mRadioButtonIds.get(i));

            if (radioButton == null) {

                Log.e(TAG, "Unable to show dialog by no radio button:" + mRadioButtonIds.get(i));

                return;

            }

            radioButton.setText(mRadioButtonStrings.get(i));

            radioButton.setEnabled(selectableIndex.contains(i));

        }

        // View will be invisible when all options are enabled.

        if (selectableIndex.size() == mRadioButtonIds.size()) {

            final TextView helpTextView = view.findViewById(R.id.bluetooth_audio_codec_help_info);

            helpTextView.setVisibility(View.GONE);

        }

    }

    @Override

    public void onCheckedChanged(RadioGroup group, int checkedId) {

        if (mCallback == null) {

            Log.e(TAG, "Callback is null");

            return;

        }

        mCallback.onIndexUpdated(mRadioButtonIds.indexOf(checkedId));

        getDialog().dismiss();

    }

    /**

     * Method to set callback.

     */

    public void setCallback(Callback callback) {

        mCallback = callback;

    }

    /**

     * Method to get summary strings by index.

     */

    protected String generateSummary(int index) {

        if (index > mSummaryStrings.size()) {

            Log.e(TAG, "Unable to get summary of " + index + ". Size is " + mSummaryStrings.size());

            return null;

        }

        return index == getDefaultIndex() ? mSummaryStrings.get(getDefaultIndex()) :

                String.format(getContext().getResources().getString(

                        R.string.bluetooth_select_a2dp_codec_streaming_label),

                        mSummaryStrings.get(index));

    }

    /**

     * Method to get default index.

     */

    protected int getDefaultIndex() {

        return 0;

    }

    /**

     * Method to get radio button group id.

     */

    protected abstract int getRadioButtonGroupId();

    /**

     * Callback interface for this class to manipulate data from controller.

     */

    public interface Callback {

        /**

         * Method to get current Bluetooth A2DP config index.

         */

        int getCurrentConfigIndex();

        /**

         * Method to get selectable config index which means supported by phone and device.

         *

         * @return the available {@link List} of the Bluetooth A2DP config.

         */

        List<Integer> getSelectableIndex();

        /**

         * Method to notify controller when user changes config.

         *

         * @param index for the selected index.

         */

        void onIndexUpdated(int index);

    }

}

/*

 * Copyright (C) 2019 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.bluetooth;

import static com.google.common.truth.Truth.assertThat;

import static org.mockito.Mockito.spy;

import static org.mockito.Mockito.verify;

import static org.mockito.Mockito.when;

import android.app.Dialog;

import android.content.Context;

import android.view.View;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.TextView;

import com.android.settings.R;

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;

import org.robolectric.RuntimeEnvironment;

import java.util.ArrayList;

import java.util.List;

@RunWith(RobolectricTestRunner.class)

public class BaseBluetoothDialogPreferenceTest {

    private static final int ID1 = 99;

    private static final int ID2 = 100;

    private static final int RADIOGROUP_ID = 101;

    private static final int TEXT_VIEW_ID = R.id.bluetooth_audio_codec_help_info;

    private static final String BUTTON1 = "Test button1";

    private static final String BUTTON2 = "Test button2";

    private static final String SUMMARY1 = "Test summary1";

    private static final String SUMMARY2 = "Test summary2";

    @Mock

    private BaseBluetoothDialogPreference.Callback mCallback;

    @Mock

    private Dialog mDialog;

    @Mock

    private View mView;

    private BaseBluetoothDialogPreference mPreference;

    private Context mContext;

    private RadioButton mRadioButton1;

    private RadioButton mRadioButton2;

    private RadioGroup mRadioGroup;

    private TextView mTextView;

    @Before

    public void setup() {

        MockitoAnnotations.initMocks(this);

        mContext = RuntimeEnvironment.application;

        mPreference = spy(new BaseBluetoothDialogPreferenceImpl(mContext));

        mRadioButton1 = new RadioButton(mContext);

        mRadioButton1.setId(ID1);

        mRadioButton2 = new RadioButton(mContext);

        mRadioButton2.setId(ID2);

        mRadioGroup = new RadioGroup(mContext);

        mRadioGroup.addView(mRadioButton1);

        mRadioGroup.addView(mRadioButton2);

        mTextView = new TextView(mContext);

        mPreference.mRadioButtonIds.add(ID1);

        mPreference.mRadioButtonIds.add(ID2);

        mPreference.mRadioButtonStrings.add(BUTTON1);

        mPreference.mRadioButtonStrings.add(BUTTON2);

        mPreference.mSummaryStrings.add(SUMMARY1);

        mPreference.mSummaryStrings.add(SUMMARY2);

        mPreference.setCallback(mCallback);

        when(mView.findViewById(mPreference.getRadioButtonGroupId())).thenReturn(mRadioGroup);

    }

    @Test

    public void onBindDialogView_checkRadioButtonsSelection() {

        when(mCallback.getCurrentConfigIndex()).thenReturn(1);

        assertThat(mRadioGroup.getCheckedRadioButtonId()).isNotEqualTo(ID2);

        mPreference.onBindDialogView(mView);

        assertThat(mRadioGroup.getCheckedRadioButtonId()).isEqualTo(ID2);

    }

    @Test

    public void onBindDialogView_checkRadioButtonsText() {

        when(mView.findViewById(ID1)).thenReturn(mRadioButton1);

        when(mView.findViewById(ID2)).thenReturn(mRadioButton2);

        assertThat(mRadioButton1.getText()).isNotEqualTo(BUTTON1);

        assertThat(mRadioButton2.getText()).isNotEqualTo(BUTTON2);

        mPreference.onBindDialogView(mView);

        assertThat(mRadioButton1.getText()).isEqualTo(BUTTON1);

        assertThat(mRadioButton2.getText()).isEqualTo(BUTTON2);

    }

    @Test

    public void onBindDialogView_checkRadioButtonsState() {

        when(mView.findViewById(ID1)).thenReturn(mRadioButton1);

        when(mView.findViewById(ID2)).thenReturn(mRadioButton2);

        List<Integer> indexes = new ArrayList<>();

        indexes.add(0);

        when(mCallback.getSelectableIndex()).thenReturn(indexes);

        assertThat(mRadioButton1.isEnabled()).isTrue();

        assertThat(mRadioButton2.isEnabled()).isTrue();

        mPreference.onBindDialogView(mView);

        assertThat(mRadioButton1.isEnabled()).isTrue();

        assertThat(mRadioButton2.isEnabled()).isFalse();

    }

    @Test

    public void onBindDialogView_allButtonsEnabled_hideHelpText() {

        when(mView.findViewById(ID1)).thenReturn(mRadioButton1);

        when(mView.findViewById(ID2)).thenReturn(mRadioButton2);

        when(mView.findViewById(TEXT_VIEW_ID)).thenReturn(mTextView);

        List<Integer> indexes = new ArrayList<>();

        indexes.add(0);

        indexes.add(1);

        when(mCallback.getSelectableIndex()).thenReturn(indexes);

        assertThat(mTextView.getVisibility()).isEqualTo(View.VISIBLE);

        mPreference.onBindDialogView(mView);

        assertThat(mTextView.getVisibility()).isEqualTo(View.GONE);

    }

    @Test

    public void onBindDialogView_buttonDisabled_showHelpText() {

        when(mView.findViewById(ID1)).thenReturn(mRadioButton1);

        when(mView.findViewById(ID2)).thenReturn(mRadioButton2);

        when(mView.findViewById(TEXT_VIEW_ID)).thenReturn(mTextView);

        List<Integer> indexes = new ArrayList<>();

        indexes.add(0);

        when(mCallback.getSelectableIndex()).thenReturn(indexes);

        mPreference.onBindDialogView(mView);

        assertThat(mTextView.getVisibility()).isEqualTo(View.VISIBLE);

    }

    @Test

    public void onCheckedChanged_verifyIndex() {

        when(mPreference.getDialog()).thenReturn(mDialog);

        mPreference.onCheckedChanged(mRadioGroup, ID2);

        verify(mCallback).onIndexUpdated(1);

    }

    @Test

    public void generateSummary_checkString() {

        final String summary = String.format(mContext.getResources().getString(

                R.string.bluetooth_select_a2dp_codec_streaming_label), SUMMARY2);

        assertThat(mPreference.generateSummary(1)).isEqualTo(summary);

    }

    private static class BaseBluetoothDialogPreferenceImpl extends BaseBluetoothDialogPreference {

        private BaseBluetoothDialogPreferenceImpl(Context context) {

            super(context);

        }

        @Override

        protected int getRadioButtonGroupId() {

            return RADIOGROUP_ID;

        }

    }

}