src/com/android/settings/notification/HeaderPreferenceController.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 static com.android.settings.widget.EntityHeaderController.PREF_KEY_APP_HEADER;

import android.content.Context;
import android.support.v14.preference.PreferenceFragment;
import android.support.v7.preference.Preference;
import android.text.BidiFormatter;
import android.text.SpannableStringBuilder;
import android.text.TextUtils;
import android.view.View;

import com.android.settings.R;
import com.android.settings.applications.LayoutPreference;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settings.widget.EntityHeaderController;

public class HeaderPreferenceController extends NotificationPreferenceController
        implements PreferenceControllerMixin {

    private final PreferenceFragment mFragment;

    public HeaderPreferenceController(Context context, PreferenceFragment fragment) {
        super(context, null);
        mFragment = fragment;
    }

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

    @Override
    public boolean isAvailable() {
        return mAppRow != null;
    }

    public void updateState(Preference preference) {
        if (mAppRow != null && mFragment != null) {
            LayoutPreference pref = (LayoutPreference) preference;
            EntityHeaderController controller = EntityHeaderController
                    .newInstance(mFragment.getActivity(), mFragment,
                            pref.findViewById(R.id.entity_header));
            pref = controller.setIcon(mAppRow.icon)
                    .setLabel(getLabel())
                    .setSummary(getSummary())
                    .setPackageName(mAppRow.pkg)
                    .setUid(mAppRow.uid)
                    .setButtonActions(EntityHeaderController.ActionType.ACTION_NOTIF_PREFERENCE,
                            EntityHeaderController.ActionType.ACTION_NONE)
                    .setHasAppInfoLink(true)
                    .done(mFragment.getActivity(), mContext);
            pref.findViewById(R.id.entity_header).setVisibility(View.VISIBLE);
        }
    }

    CharSequence getLabel() {
        return mChannel != null ? mChannel.getName()
                : mChannelGroup != null && mChannelGroup.getGroup() != null
                        ? mChannelGroup.getGroup().getName()
                        : mAppRow.label;
    }

    CharSequence getSummary() {
        if (mChannel != null) {
           if (mChannelGroup != null && mChannelGroup.getGroup() != null
                && !TextUtils.isEmpty(mChannelGroup.getGroup().getName())) {
               final SpannableStringBuilder summary = new SpannableStringBuilder();
               BidiFormatter bidi = BidiFormatter.getInstance();
               summary.append(bidi.unicodeWrap(mAppRow.label.toString()));
               summary.append(bidi.unicodeWrap(mContext.getText(
                       R.string.notification_header_divider_symbol_with_spaces)));
               summary.append(bidi.unicodeWrap(mChannelGroup.getGroup().getName().toString()));
               return summary;
           } else {
               return mAppRow.label;
           }
        } else if (mChannelGroup != null && mChannelGroup.getGroup() != null) {
            return mAppRow.label;
        } else {
            return "";
        }
    }
}