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/*
* Copyright (C) 2018 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.packageinstaller.permission.ui.handheld;
import android.content.Context;
import android.text.TextUtils;
import android.util.Pair;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.DrawableRes;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.preference.Preference;
import androidx.preference.PreferenceGroup;
import androidx.preference.PreferenceViewHolder;
import com.android.permissioncontroller.R;
import java.util.ArrayList;
import java.util.List;
/**
* A preference group that expands/collapses its children when clicked.
*/
public class ExpandablePreferenceGroup extends PreferenceGroup {
private @NonNull Context mContext;
private @NonNull List<Preference> mPreferences;
private @NonNull List<Pair<Integer, CharSequence>> mSummaryIcons;
private boolean mExpanded;
public ExpandablePreferenceGroup(@NonNull Context context) {
super(context, null);
mContext = context;
mPreferences = new ArrayList<>();
mSummaryIcons = new ArrayList<>();
mExpanded = false;
setLayoutResource(R.layout.preference_usage);
setWidgetLayoutResource(R.layout.image_view);
setOnPreferenceClickListener(preference -> {
if (!mExpanded) {
int numPreferences = mPreferences.size();
for (int i = 0; i < numPreferences; i++) {
super.addPreference(mPreferences.get(i));
}
} else {
removeAll();
}
mExpanded = !mExpanded;
return true;
});
}
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
ImageView icon = (ImageView) holder.findViewById(android.R.id.icon);
int rightIconSize = mContext.getResources().getDimensionPixelSize(
R.dimen.secondary_app_icon_size);
icon.setMaxWidth(rightIconSize);
icon.setMaxHeight(rightIconSize);
super.onBindViewHolder(holder);
TextView summary = (TextView) holder.findViewById(android.R.id.summary);
summary.setMaxLines(1);
summary.setEllipsize(TextUtils.TruncateAt.END);
ImageView rightImageView = holder.findViewById(
android.R.id.widget_frame).findViewById(R.id.icon);
if (mExpanded) {
rightImageView.setImageResource(R.drawable.ic_arrow_up);
} else {
rightImageView.setImageResource(R.drawable.ic_arrow_down);
}
holder.setDividerAllowedAbove(false);
holder.setDividerAllowedBelow(false);
holder.findViewById(R.id.title_widget_frame).setVisibility(View.GONE);
ViewGroup summaryFrame = (ViewGroup) holder.findViewById(R.id.summary_widget_frame);
if (mSummaryIcons.isEmpty()) {
summaryFrame.setVisibility(View.GONE);
} else {
summaryFrame.removeAllViews();
int numIcons = mSummaryIcons.size();
for (int i = 0; i < numIcons; i++) {
LayoutInflater inflater = mContext.getSystemService(LayoutInflater.class);
ViewGroup group = (ViewGroup) inflater.inflate(R.layout.title_summary_image_view,
null);
ImageView imageView = group.requireViewById(R.id.icon);
Pair<Integer, CharSequence> summaryIcons = mSummaryIcons.get(i);
imageView.setImageResource(summaryIcons.first);
if (summaryIcons.second != null) {
imageView.setContentDescription(summaryIcons.second);
}
summaryFrame.addView(group);
}
}
}
@Override
public boolean addPreference(Preference preference) {
mPreferences.add(preference);
return true;
}
/**
* Show the given icon next to this preference's summary.
*
* @param resId the resourceId of the drawable to use as the icon.
*/
public void addSummaryIcon(@DrawableRes int resId, @Nullable CharSequence contentDescription) {
mSummaryIcons.add(Pair.create(resId, contentDescription));
}
}
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