Add permission self check

/*

 * Copyright 2013-2016 microG Project Team

 *

 * 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 org.microg.tools.selfcheck;

import android.annotation.TargetApi;

import android.content.Context;

import android.content.pm.PackageManager;

import android.content.pm.PermissionGroupInfo;

import android.content.pm.PermissionInfo;

import android.support.v4.app.Fragment;

import android.util.Log;

import org.microg.tools.ui.R;

import static android.os.Build.VERSION_CODES.M;

import static org.microg.tools.selfcheck.SelfCheckGroup.Result.Negative;

import static org.microg.tools.selfcheck.SelfCheckGroup.Result.Positive;

@TargetApi(M)

public class PermissionCheckGroup implements SelfCheckGroup {

    private static final String TAG = "SelfCheckPerms";

    private String[] permissions;

    public PermissionCheckGroup(String... permissions) {

        this.permissions = permissions;

    }

    @Override

    public String getGroupName(Context context) {

        return context.getString(R.string.self_check_cat_permissions);

    }

    @Override

    public void doChecks(Context context, ResultCollector collector) {

        for (String permission : permissions) {

            doPermissionCheck(context, collector, permission);

        }

    }

    private void doPermissionCheck(Context context, ResultCollector collector, final String permission) {

        PackageManager pm = context.getPackageManager();

        try {

            PermissionInfo info = pm.getPermissionInfo(permission, 0);

            PermissionGroupInfo groupInfo = info.group != null ? pm.getPermissionGroupInfo(info.group, 0) : null;

            CharSequence permLabel = info.loadLabel(pm);

            CharSequence groupLabel = groupInfo != null ? groupInfo.loadLabel(pm) : permLabel;

            collector.addResult(context.getString(R.string.self_check_name_permission, permLabel),

                    context.checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED ? Positive : Negative,

                    context.getString(R.string.self_check_resolution_permission, groupLabel),

                    new SelfCheckGroup.CheckResolver() {

                        @Override

                        public void tryResolve(Fragment fragment) {

                            fragment.requestPermissions(new String[]{permission}, 0);

                        }

                    });

        } catch (PackageManager.NameNotFoundException e) {

            Log.w(TAG, e);

        }

    }

}

        android:paddingRight="?attr/listPreferredItemPaddingRight"

        android:paddingTop="16dip"

        android:textAppearance="@style/TextAppearance.AppCompat.Body2"

        android:text="@+id/about_root_libraries"

        android:text="@string/about_root_libraries"

        android:textColor="?attr/colorAccent"/>

    <ListView

  <string name="self_check_title">микроГ самопровера</string>

  <string name="self_check_desc">Провера исправности подешавања система за коришћење микроГ услуга.</string>

  <string name="self_check_cat_permissions">Дозволе одобрене</string>

  <string name="self_check_name_permission">Дозволе за %1$s:</string>

  <string name="self_check_resolution_permission">Тапните овде да одобрите дозволе за %1$s. Не одобравање дозвола може да резултира чудним понашањем апликација.</string>

</resources>

    <string name="self_check_title">Self-Check</string>

    <string name="self_check_desc">Check if the system is correctly set up to use microG.</string>

    <string name="self_check_cat_permissions">Permissions granted</string>

    <string name="self_check_name_permission">Permission to %1$s:</string>

    <string name="self_check_resolution_permission">Touch here to grant permission to %1$s. Not granting the permission can result in misbehaving applications.</string>

    <string name="about_root_title">microG UI Demo</string>

    <string name="about_root_summary">Summary</string>

    <string name="about_root_version">Version v0.1.0</string>