1 /*
2  * Copyright (C) 2015 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 
17 package com.android.messaging.ui.appsettings;
18 
19 import android.content.Context;
20 import android.preference.EditTextPreference;
21 import android.support.v4.text.BidiFormatter;
22 import android.support.v4.text.TextDirectionHeuristicsCompat;
23 import android.text.InputType;
24 import android.text.TextUtils;
25 import android.util.AttributeSet;
26 import android.view.View;
27 
28 import com.android.messaging.R;
29 import com.android.messaging.util.PhoneUtils;
30 
31 /**
32  * Preference that displays a phone number and allows editing via a dialog.
33  * <p>
34  * A default number can be assigned, which is shown in the preference view and
35  * used to populate the dialog editor when the preference value is not set. If
36  * the user sets the preference to a number equivalent to the default, the
37  * underlying preference is cleared.
38  */
39 public class PhoneNumberPreference extends EditTextPreference {
40 
41     private String mDefaultPhoneNumber;
42     private int mSubId;
43 
PhoneNumberPreference(final Context context, final AttributeSet attrs)44     public PhoneNumberPreference(final Context context, final AttributeSet attrs) {
45         super(context, attrs);
46         mDefaultPhoneNumber = "";
47     }
48 
setDefaultPhoneNumber(final String phoneNumber, final int subscriptionId)49     public void setDefaultPhoneNumber(final String phoneNumber, final int subscriptionId) {
50         mDefaultPhoneNumber = phoneNumber;
51         mSubId = subscriptionId;
52     }
53 
54     @Override
onBindView(final View view)55     protected void onBindView(final View view) {
56         // Show the preference value if it's set, or the default number if not.
57         // If we don't have a default, fall back to a static string (e.g. Unknown).
58         String value = getText();
59         if (TextUtils.isEmpty(value)) {
60           value = mDefaultPhoneNumber;
61         }
62         final String displayValue = (!TextUtils.isEmpty(value))
63                 ? PhoneUtils.get(mSubId).formatForDisplay(value)
64                 : getContext().getString(R.string.unknown_phone_number_pref_display_value);
65         final BidiFormatter bidiFormatter = BidiFormatter.getInstance();
66         final String phoneNumber = bidiFormatter.unicodeWrap
67                         (displayValue, TextDirectionHeuristicsCompat.LTR);
68         // Set the value as the summary and let the superclass populate the views
69         setSummary(phoneNumber);
70         super.onBindView(view);
71     }
72 
73     @Override
onBindDialogView(final View view)74     protected void onBindDialogView(final View view) {
75         super.onBindDialogView(view);
76 
77         final String value = getText();
78 
79         // If the preference is empty, populate the EditText with the default number instead.
80         if (TextUtils.isEmpty(value) && !TextUtils.isEmpty(mDefaultPhoneNumber)) {
81             final BidiFormatter bidiFormatter = BidiFormatter.getInstance();
82             final String phoneNumber = bidiFormatter.unicodeWrap
83                 (PhoneUtils.get(mSubId).getCanonicalBySystemLocale(mDefaultPhoneNumber),
84                             TextDirectionHeuristicsCompat.LTR);
85             getEditText().setText(phoneNumber);
86         }
87         getEditText().setInputType(InputType.TYPE_CLASS_PHONE);
88     }
89 
90     @Override
onDialogClosed(final boolean positiveResult)91     protected void onDialogClosed(final boolean positiveResult) {
92         if (positiveResult && mDefaultPhoneNumber != null) {
93             final String value = getEditText().getText().toString();
94             final PhoneUtils phoneUtils = PhoneUtils.get(mSubId);
95             final String phoneNumber = phoneUtils.getCanonicalBySystemLocale(value);
96             final String defaultPhoneNumber = phoneUtils.getCanonicalBySystemLocale(
97                     mDefaultPhoneNumber);
98 
99             // If the new value is the default, clear the preference.
100             if (phoneNumber.equals(defaultPhoneNumber)) {
101                 setText("");
102                 return;
103             }
104         }
105         super.onDialogClosed(positiveResult);
106     }
107 
108     @Override
setText(final String text)109     public void setText(final String text) {
110         super.setText(text);
111 
112         // EditTextPreference doesn't show the value on the preference view, but we do.
113         // We thus need to force a rebind of the view when a new value is set.
114         notifyChanged();
115     }
116 }
117