/*
* Copyright (C) 2013 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;
import android.app.Activity;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.UserInfo;
import android.content.res.Resources;
import android.graphics.ColorFilter;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.UserManager;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceGroup;
import android.support.v7.preference.PreferenceViewHolder;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.RadioButton;
import com.android.internal.logging.MetricsProto.MetricsEvent;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.search.Index;
import com.android.settings.search.Indexable;
import com.android.settings.search.SearchIndexableRaw;
import java.util.ArrayList;
import java.util.List;
public class HomeSettings extends SettingsPreferenceFragment implements Indexable {
static final String TAG = "HomeSettings";
// Boolean extra, indicates only launchers that support managed profiles should be shown.
// Note: must match the constant defined in ManagedProvisioning
private static final String EXTRA_SUPPORT_MANAGED_PROFILES = "support_managed_profiles";
static final int REQUESTING_UNINSTALL = 10;
public static final String HOME_PREFS = "home_prefs";
public static final String HOME_PREFS_DO_SHOW = "do_show";
public static final String HOME_SHOW_NOTICE = "show";
private class HomePackageReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
buildHomeActivitiesList();
Index.getInstance(context).updateFromClassNameResource(
HomeSettings.class.getName(), true, true);
}
}
private PreferenceGroup mPrefGroup;
private PackageManager mPm;
private ComponentName[] mHomeComponentSet;
private ArrayList<HomeAppPreference> mPrefs;
private HomeAppPreference mCurrentHome = null;
private final IntentFilter mHomeFilter;
private boolean mShowNotice;
private HomePackageReceiver mHomePackageReceiver = new HomePackageReceiver();
public HomeSettings() {
mHomeFilter = new IntentFilter(Intent.ACTION_MAIN);
mHomeFilter.addCategory(Intent.CATEGORY_HOME);
mHomeFilter.addCategory(Intent.CATEGORY_DEFAULT);
}
OnClickListener mHomeClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
int index = (Integer)v.getTag();
HomeAppPreference pref = mPrefs.get(index);
if (!pref.isChecked) {
makeCurrentHome(pref);
}
}
};
OnClickListener mDeleteClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
int index = (Integer)v.getTag();
uninstallApp(mPrefs.get(index));
}
};
void makeCurrentHome(HomeAppPreference newHome) {
if (mCurrentHome != null) {
mCurrentHome.setChecked(false);
}
newHome.setChecked(true);
mCurrentHome = newHome;
mPm.replacePreferredActivity(mHomeFilter, IntentFilter.MATCH_CATEGORY_EMPTY,
mHomeComponentSet, newHome.activityName);
getActivity().setResult(Activity.RESULT_OK);
}
void uninstallApp(HomeAppPreference pref) {
// Uninstallation is done by asking the OS to do it
Uri packageURI = Uri.parse("package:" + pref.uninstallTarget);
Intent uninstallIntent = new Intent(Intent.ACTION_UNINSTALL_PACKAGE, packageURI);
uninstallIntent.putExtra(Intent.EXTRA_UNINSTALL_ALL_USERS, false);
int requestCode = REQUESTING_UNINSTALL + (pref.isChecked ? 1 : 0);
startActivityForResult(uninstallIntent, requestCode);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Rebuild the list now that we might have nuked something
buildHomeActivitiesList();
// if the previous home app is now gone, fall back to the system one
if (requestCode > REQUESTING_UNINSTALL) {
// if mCurrentHome has gone null, it means we didn't find the previously-
// default home app when rebuilding the list, i.e. it was the one we
// just uninstalled. When that happens we make the system-bundled
// home app the active default.
if (mCurrentHome == null) {
for (int i = 0; i < mPrefs.size(); i++) {
HomeAppPreference pref = mPrefs.get(i);
if (pref.isSystem) {
makeCurrentHome(pref);
break;
}
}
}
}
}
private void buildHomeActivitiesList() {
ArrayList<ResolveInfo> homeActivities = new ArrayList<ResolveInfo>();
ComponentName currentDefaultHome = mPm.getHomeActivities(homeActivities);
Context context = getPrefContext();
mCurrentHome = null;
mPrefGroup.removeAll();
mPrefs = new ArrayList<HomeAppPreference>();
mHomeComponentSet = new ComponentName[homeActivities.size()];
int prefIndex = 0;
boolean supportManagedProfilesExtra =
getActivity().getIntent().getBooleanExtra(EXTRA_SUPPORT_MANAGED_PROFILES, false);
boolean mustSupportManagedProfile = hasManagedProfile()
|| supportManagedProfilesExtra;
for (int i = 0; i < homeActivities.size(); i++) {
final ResolveInfo candidate = homeActivities.get(i);
final ActivityInfo info = candidate.activityInfo;
ComponentName activityName = new ComponentName(info.packageName, info.name);
mHomeComponentSet[i] = activityName;
try {
Drawable icon = info.loadIcon(mPm);
CharSequence name = info.loadLabel(mPm);
HomeAppPreference pref;
if (mustSupportManagedProfile && !launcherHasManagedProfilesFeature(candidate)) {
pref = new HomeAppPreference(context, activityName, prefIndex,
icon, name, this, info, false /* not enabled */,
getResources().getString(R.string.home_work_profile_not_supported));
} else {
pref = new HomeAppPreference(context, activityName, prefIndex,
icon, name, this, info, true /* enabled */, null);
}
mPrefs.add(pref);
mPrefGroup.addPreference(pref);
if (activityName.equals(currentDefaultHome)) {
mCurrentHome = pref;
}
prefIndex++;
} catch (Exception e) {
Log.v(TAG, "Problem dealing with activity " + activityName, e);
}
}
if (mCurrentHome != null) {
if (mCurrentHome.isEnabled()) {
getActivity().setResult(Activity.RESULT_OK);
}
new Handler().post(new Runnable() {
public void run() {
mCurrentHome.setChecked(true);
}
});
}
}
private boolean hasManagedProfile() {
Context context = getActivity();
UserManager userManager = (UserManager) getSystemService(Context.USER_SERVICE);
List<UserInfo> profiles = userManager.getProfiles(context.getUserId());
for (UserInfo userInfo : profiles) {
if (userInfo.isManagedProfile()) return true;
}
return false;
}
private boolean launcherHasManagedProfilesFeature(ResolveInfo resolveInfo) {
try {
ApplicationInfo appInfo = getPackageManager().getApplicationInfo(
resolveInfo.activityInfo.packageName, 0 /* default flags */);
return versionNumberAtLeastL(appInfo.targetSdkVersion);
} catch (PackageManager.NameNotFoundException e) {
return false;
}
}
private boolean versionNumberAtLeastL(int versionNumber) {
return versionNumber >= Build.VERSION_CODES.LOLLIPOP;
}
@Override
protected int getMetricsCategory() {
return MetricsEvent.HOME;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.home_selection);
mPm = getPackageManager();
mPrefGroup = (PreferenceGroup) findPreference("home");
Bundle args = getArguments();
mShowNotice = (args != null) && args.getBoolean(HOME_SHOW_NOTICE, false);
}
@Override
public void onResume() {
super.onResume();
final IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
filter.addDataScheme("package");
getActivity().registerReceiver(mHomePackageReceiver, filter);
buildHomeActivitiesList();
}
@Override
public void onPause() {
super.onPause();
getActivity().unregisterReceiver(mHomePackageReceiver);
}
private class HomeAppPreference extends Preference {
ComponentName activityName;
int index;
HomeSettings fragment;
final ColorFilter grayscaleFilter;
boolean isChecked;
boolean isSystem;
String uninstallTarget;
public HomeAppPreference(Context context, ComponentName activity,
int i, Drawable icon, CharSequence title, HomeSettings parent, ActivityInfo info,
boolean enabled, CharSequence summary) {
super(context);
setLayoutResource(R.layout.preference_home_app);
setIcon(icon);
setTitle(title);
setEnabled(enabled);
setSummary(summary);
activityName = activity;
fragment = parent;
index = i;
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.setSaturation(0f);
float[] matrix = colorMatrix.getArray();
matrix[18] = 0.5f;
grayscaleFilter = new ColorMatrixColorFilter(colorMatrix);
determineTargets(info);
}
// Check whether this activity is bundled on the system, with awareness
// of the META_HOME_ALTERNATE mechanism.
private void determineTargets(ActivityInfo info) {
final Bundle meta = info.metaData;
if (meta != null) {
final String altHomePackage = meta.getString(ActivityManager.META_HOME_ALTERNATE);
if (altHomePackage != null) {
try {
final int match = mPm.checkSignatures(info.packageName, altHomePackage);
if (match >= PackageManager.SIGNATURE_MATCH) {
PackageInfo altInfo = mPm.getPackageInfo(altHomePackage, 0);
final int altFlags = altInfo.applicationInfo.flags;
isSystem = (altFlags & ApplicationInfo.FLAG_SYSTEM) != 0;
uninstallTarget = altInfo.packageName;
return;
}
} catch (Exception e) {
// e.g. named alternate package not found during lookup
Log.w(TAG, "Unable to compare/resolve alternate", e);
}
}
}
// No suitable metadata redirect, so use the package's own info
isSystem = (info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
uninstallTarget = info.packageName;
}
@Override
public void onBindViewHolder(PreferenceViewHolder view) {
super.onBindViewHolder(view);
RadioButton radio = (RadioButton) view.findViewById(R.id.home_radio);
radio.setChecked(isChecked);
Integer indexObj = new Integer(index);
ImageView icon = (ImageView) view.findViewById(R.id.home_app_uninstall);
if (isSystem) {
icon.setEnabled(false);
icon.setColorFilter(grayscaleFilter);
} else {
icon.setEnabled(true);
icon.setOnClickListener(mDeleteClickListener);
icon.setTag(indexObj);
}
View v = view.findViewById(R.id.home_app_pref);
v.setTag(indexObj);
v.setOnClickListener(mHomeClickListener);
}
void setChecked(boolean state) {
if (state != isChecked) {
isChecked = state;
notifyChanged();
}
}
}
/**
* For search
*/
public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
new BaseSearchIndexProvider() {
@Override
public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) {
final List<SearchIndexableRaw> result = new ArrayList<SearchIndexableRaw>();
final PackageManager pm = context.getPackageManager();
final ArrayList<ResolveInfo> homeActivities = new ArrayList<ResolveInfo>();
pm.getHomeActivities(homeActivities);
final SharedPreferences sp = context.getSharedPreferences(
HomeSettings.HOME_PREFS, Context.MODE_PRIVATE);
final boolean doShowHome = sp.getBoolean(HomeSettings.HOME_PREFS_DO_SHOW, false);
// We index Home Launchers only if there are more than one or if we are showing the
// Home tile into the Dashboard
if (homeActivities.size() > 1 || doShowHome) {
final Resources res = context.getResources();
// Add fragment title
SearchIndexableRaw data = new SearchIndexableRaw(context);
data.title = res.getString(R.string.home_settings);
data.screenTitle = res.getString(R.string.home_settings);
data.keywords = res.getString(R.string.keywords_home);
result.add(data);
for (int i = 0; i < homeActivities.size(); i++) {
final ResolveInfo resolveInfo = homeActivities.get(i);
final ActivityInfo activityInfo = resolveInfo.activityInfo;
CharSequence name;
try {
name = activityInfo.loadLabel(pm);
if (TextUtils.isEmpty(name)) {
continue;
}
} catch (Exception e) {
Log.v(TAG, "Problem dealing with Home " + activityInfo.name, e);
continue;
}
data = new SearchIndexableRaw(context);
data.title = name.toString();
data.screenTitle = res.getString(R.string.home_settings);
result.add(data);
}
}
return result;
}
};
}