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/*
* Copyright (C) 2013 SlimRoms 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.privacyguard;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.SectionIndexer;
import android.widget.TextView;
import com.android.settings.R;
import com.android.settings.privacyguard.PrivacyGuardManager.AppInfo;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
public class PrivacyGuardAppListAdapter extends BaseAdapter implements SectionIndexer {
private LayoutInflater mInflater;
private PackageManager mPm;
private List<AppInfo> mApps;
private String[] mSections;
private int[] mPositions;
private ConcurrentHashMap<String, Drawable> mIcons;
private Drawable mDefaultImg;
private Context mContext;
//constructor
public PrivacyGuardAppListAdapter(Context context, List<AppInfo> apps,
List<String> sections, List<Integer> positions) {
mContext = context;
mInflater = LayoutInflater.from(mContext);
mPm = context.getPackageManager();
mApps = apps;
mSections = sections.toArray(new String[sections.size()]);
mPositions = new int[positions.size()];
for (int i = 0; i < positions.size(); i++) {
mPositions[i] = positions.get(i);
}
// set the default icon till the actual app icon is loaded in async task
mDefaultImg = mContext.getResources().getDrawable(android.R.mipmap.sym_def_app_icon);
mIcons = new ConcurrentHashMap<String, Drawable>();
new LoadIconsTask().execute(apps.toArray(new PrivacyGuardManager.AppInfo[]{}));
}
@Override
public int getCount() {
return mApps.size();
}
@Override
public Object getItem(int position) {
return mApps.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
PrivacyGuardAppViewHolder appHolder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.privacy_guard_manager_list_row, null);
// creates a ViewHolder and children references
appHolder = new PrivacyGuardAppViewHolder();
appHolder.title = (TextView) convertView.findViewById(R.id.app_title);
appHolder.icon = (ImageView) convertView.findViewById(R.id.app_icon);
appHolder.privacyGuardIcon = (ImageView) convertView.findViewById(R.id.app_privacy_guard_icon);
convertView.setTag(appHolder);
} else {
appHolder = (PrivacyGuardAppViewHolder) convertView.getTag();
}
PrivacyGuardManager.AppInfo app = mApps.get(position);
appHolder.title.setText(app.title);
Drawable icon = mIcons.get(app.packageName);
appHolder.icon.setImageDrawable(icon != null ? icon : mDefaultImg);
int privacyGuardDrawableResId = app.privacyGuardEnabled
? R.drawable.ic_privacy_guard_on :
R.drawable.ic_privacy_guard_off;
appHolder.privacyGuardIcon.setImageResource(privacyGuardDrawableResId);
return convertView;
}
@Override
public int getPositionForSection(int section) {
if (section < 0 || section >= mSections.length) {
return -1;
}
return mPositions[section];
}
@Override
public int getSectionForPosition(int position) {
if (position < 0 || position >= getCount()) {
return -1;
}
int index = Arrays.binarySearch(mPositions, position);
/*
* Consider this example: section positions are 0, 3, 5; the supplied
* position is 4. The section corresponding to position 4 starts at
* position 3, so the expected return value is 1. Binary search will not
* find 4 in the array and thus will return -insertPosition-1, i.e. -3.
* To get from that number to the expected value of 1 we need to negate
* and subtract 2.
*/
return index >= 0 ? index : -index - 2;
}
@Override
public Object[] getSections() {
return mSections;
}
/**
* An asynchronous task to load the icons of the installed applications.
*/
private class LoadIconsTask extends AsyncTask<PrivacyGuardManager.AppInfo, Void, Void> {
@Override
protected Void doInBackground(PrivacyGuardManager.AppInfo... apps) {
for (PrivacyGuardManager.AppInfo app : apps) {
try {
Drawable icon = mPm.getApplicationIcon(app.packageName);
mIcons.put(app.packageName, icon);
publishProgress();
} catch (PackageManager.NameNotFoundException e) {
// ignored; app will show up with default image
}
}
return null;
}
@Override
protected void onProgressUpdate(Void... progress) {
notifyDataSetChanged();
}
}
/**
* App view holder used to reuse the views inside the list.
*/
public static class PrivacyGuardAppViewHolder {
TextView title;
ImageView icon;
ImageView privacyGuardIcon;
}
}
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