src/com/android/settings/notification/DescriptionPreferenceController.java

/*
 * 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.notification;

import android.content.Context;
import androidx.preference.Preference;
import android.text.TextUtils;

import com.android.settings.core.PreferenceControllerMixin;

public class DescriptionPreferenceController extends NotificationPreferenceController
        implements PreferenceControllerMixin {

    private static final String KEY_DESC = "desc";

    public DescriptionPreferenceController(Context context) {
        super(context, null);
    }

    @Override
    public String getPreferenceKey() {
        return KEY_DESC;
    }

    @Override
    public boolean isAvailable() {
        if (!super.isAvailable()) {
            return false;
        }
        if (mChannel == null && !hasValidGroup()) {
            return false;
        }
        if (mChannel != null && !TextUtils.isEmpty(mChannel.getDescription())) {
            return true;
        }
        if (hasValidGroup() && !TextUtils.isEmpty(mChannelGroup.getDescription())) {
            return true;
        }
        return false;
    }

    public void updateState(Preference preference) {
        if (mAppRow != null) {
            if (mChannel != null) {
                preference.setTitle(mChannel.getDescription());
            } else if (hasValidGroup()) {
                preference.setTitle(mChannelGroup.getDescription());
            }
        }
        preference.setEnabled(false);
        preference.setSelectable(false);
    }
}