BlockUninstallationInfoArrayAdapter.java

/*
 * Copyright (C) 2015 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.afwsamples.testdpc.policy.blockuninstallation;

import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;

import com.afwsamples.testdpc.DeviceAdminReceiver;
import com.afwsamples.testdpc.R;
import com.afwsamples.testdpc.common.ToggleComponentsArrayAdapter;

import java.util.ArrayList;
import java.util.List;

/**
 * Displays a list of installed apps with a checkbox for disabling the uninstallation.
 */
public class BlockUninstallationInfoArrayAdapter extends ToggleComponentsArrayAdapter {

    public BlockUninstallationInfoArrayAdapter(Context context, int resource,
            List<ResolveInfo> resolveInfoList) {
        super(context, resource, resolveInfoList);
        setIsComponentEnabledList(createIsComponentEnabledList());
    }

    @Override
    public boolean isComponentEnabled(ResolveInfo resolveInfo) {
        return mDevicePolicyManager.isUninstallBlocked(
                DeviceAdminReceiver.getComponentName(getContext()),
                resolveInfo.resolvePackageName);
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        View view = super.getView(position, convertView, parent);
        view.findViewById(R.id.enable_component_checkbox).setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        boolean isBlocked = ((CheckBox) v).isChecked();
                        mIsComponentCheckedList.set(position, isBlocked);
                        mDevicePolicyManager.setUninstallBlocked(
                                DeviceAdminReceiver.getComponentName(getContext()),
                                getItem(position).resolvePackageName, isBlocked);
                    }
                }
        );
        return view;
    }

    @Override
    protected ApplicationInfo getApplicationInfo(int position) {
        try {
            return mPackageManager.getApplicationInfo(getItem(position).resolvePackageName,
                    0 /* Default flags */);
        } catch (PackageManager.NameNotFoundException e) {
            Log.e(TAG, "getApplicationInfo: ", e);
        }
        return null;
    }

    private List<Boolean> createIsComponentEnabledList() {
        List<Boolean> isComponentEnabledList = new ArrayList<>();
        int size = getCount();
        for (int i = 0; i < size; i++) {
            isComponentEnabledList.add(isComponentEnabled(getItem(i)));
        }
        return isComponentEnabledList;
    }

    @Override
    protected boolean canModifyComponent(int position) {
        // Uninstallation of all apps can be blocked.
        return true;
    }

    /**
     * Stores whether installation is blocked for a package.
     */
    public class BlockUninstallationAppInfo {
        public boolean isUninstallationBlocked;
        public String pkgName;
    }

    @Override
    public CharSequence getDisplayName(int position) {
        return mPackageManager.getApplicationLabel(getApplicationInfo(position));
    }
}