1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.settings.print;
18
19import android.content.ComponentName;
20import android.content.Context;
21import android.provider.Settings;
22import android.text.TextUtils.SimpleStringSplitter;
23
24import java.util.ArrayList;import java.util.List;
25
26/**
27 * Helper methods for reading and writing to print settings.
28 */
29public class SettingsUtils {
30
31    private static final char ENABLED_PRINT_SERVICES_SEPARATOR = ':';
32
33    private SettingsUtils() {
34        /* do nothing */
35    }
36
37    public static List<ComponentName> readEnabledPrintServices(Context context) {
38        List<ComponentName> enabledServices = new ArrayList<ComponentName>();
39
40        String enabledServicesSetting = Settings.Secure.getString(context
41                .getContentResolver(), Settings.Secure.ENABLED_PRINT_SERVICES);
42        if (enabledServicesSetting == null) {
43            return enabledServices;
44        }
45
46        SimpleStringSplitter colonSplitter = new SimpleStringSplitter(
47                ENABLED_PRINT_SERVICES_SEPARATOR);
48        colonSplitter.setString(enabledServicesSetting);
49
50        while (colonSplitter.hasNext()) {
51            String componentNameString = colonSplitter.next();
52            ComponentName enabledService = ComponentName.unflattenFromString(
53                    componentNameString);
54            enabledServices.add(enabledService);
55        }
56
57        return enabledServices;
58    }
59
60    public static void writeEnabledPrintServices(Context context,
61            List<ComponentName> services) {
62        StringBuilder builder = new StringBuilder();
63        final int serviceCount = services.size();
64        for (int i = 0; i < serviceCount; i++) {
65            ComponentName service = services.get(i);
66            if (builder.length() > 0) {
67                builder.append(ENABLED_PRINT_SERVICES_SEPARATOR);
68            }
69            builder.append(service.flattenToString());
70        }
71        Settings.Secure.putString(context.getContentResolver(),
72                Settings.Secure.ENABLED_PRINT_SERVICES,
73                builder.toString());
74    }
75}
76