1/**
2 * Copyright (C) 2014 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.phone;
18
19import android.app.ActionBar;
20import android.content.Context;
21import android.content.Intent;
22import android.content.res.Resources;
23import android.telephony.SubscriptionInfo;
24import android.telephony.SubscriptionManager;
25import android.telephony.TelephonyManager;
26import android.text.TextUtils;
27
28import com.android.phone.PhoneGlobals;
29import com.android.internal.telephony.Phone;
30import com.android.internal.telephony.PhoneFactory;
31
32/**
33 * Helper for manipulating intents or components with subscription-related information.
34 *
35 * In settings, subscription ids and labels are passed along to indicate that settings
36 * are being changed for particular subscriptions. This helper provides functions for
37 * helping extract this info and perform common operations using this info.
38 */
39public class SubscriptionInfoHelper {
40    public static final int NO_SUB_ID = -1;
41
42    // Extra on intent containing the id of a subscription.
43    public static final String SUB_ID_EXTRA =
44            "com.android.phone.settings.SubscriptionInfoHelper.SubscriptionId";
45    // Extra on intent containing the label of a subscription.
46    private static final String SUB_LABEL_EXTRA =
47            "com.android.phone.settings.SubscriptionInfoHelper.SubscriptionLabel";
48
49    private static Context mContext;
50
51    private static int mSubId = NO_SUB_ID;
52    private static String mSubLabel;
53
54    /**
55     * Instantiates the helper, by extracting the subscription id and label from the intent.
56     */
57    public SubscriptionInfoHelper(Context context, Intent intent) {
58        mContext = context;
59        mSubId = intent.getIntExtra(SUB_ID_EXTRA, NO_SUB_ID);
60        mSubLabel = intent.getStringExtra(SUB_LABEL_EXTRA);
61    }
62
63    /**
64     * @param newActivityClass The class of the activity for the intent to start.
65     * @return Intent containing extras for the subscription id and label if they exist.
66     */
67    public Intent getIntent(Class newActivityClass) {
68        Intent intent = new Intent(mContext, newActivityClass);
69
70        if (hasSubId()) {
71            intent.putExtra(SUB_ID_EXTRA, mSubId);
72        }
73
74        if (!TextUtils.isEmpty(mSubLabel)) {
75            intent.putExtra(SUB_LABEL_EXTRA, mSubLabel);
76        }
77
78        return intent;
79    }
80
81    public static void addExtrasToIntent(Intent intent, SubscriptionInfo subscription) {
82        if (subscription == null) {
83            return;
84        }
85
86        intent.putExtra(SubscriptionInfoHelper.SUB_ID_EXTRA, subscription.getSubscriptionId());
87        intent.putExtra(
88                SubscriptionInfoHelper.SUB_LABEL_EXTRA, subscription.getDisplayName().toString());
89    }
90
91    /**
92     * @return Phone object. If a subscription id exists, it returns the phone for the id.
93     */
94    public Phone getPhone() {
95        return hasSubId()
96                ? PhoneFactory.getPhone(SubscriptionManager.getPhoneId(mSubId))
97                : PhoneGlobals.getPhone();
98    }
99
100    /**
101     * Sets the action bar title to the string specified by the given resource id, formatting
102     * it with the subscription label. This assumes the resource string is formattable with a
103     * string-type specifier.
104     *
105     * If the subscription label does not exists, leave the existing title.
106     */
107    public void setActionBarTitle(ActionBar actionBar, Resources res, int resId) {
108        if (actionBar == null || TextUtils.isEmpty(mSubLabel)) {
109            return;
110        }
111
112        if (!TelephonyManager.from(mContext).isMultiSimEnabled()) {
113            return;
114        }
115
116        String title = String.format(res.getString(resId), mSubLabel);
117        actionBar.setTitle(title);
118    }
119
120    public boolean hasSubId() {
121        return mSubId != NO_SUB_ID;
122    }
123
124    public int getSubId() {
125        return mSubId;
126    }
127}
128