1/*
2 * Copyright (C) 2011 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.contacts.common.util;
18
19import android.content.Context;
20import android.os.AsyncTask;
21import android.telephony.PhoneNumberFormattingTextWatcher;
22import android.widget.TextView;
23
24import com.android.contacts.common.GeoUtil;
25import com.android.contacts.common.compat.PhoneNumberFormattingTextWatcherCompat;
26
27public final class PhoneNumberFormatter {
28    private PhoneNumberFormatter() {}
29
30    /**
31     * Load {@link TextWatcherLoadAsyncTask} in a worker thread and set it to a {@link TextView}.
32     */
33    private static class TextWatcherLoadAsyncTask extends
34            AsyncTask<Void, Void, PhoneNumberFormattingTextWatcher> {
35        private final String mCountryCode;
36        private final TextView mTextView;
37        private final boolean mFormatAfterWatcherSet;
38
39        public TextWatcherLoadAsyncTask(
40                String countryCode, TextView textView, boolean formatAfterWatcherSet) {
41            mCountryCode = countryCode;
42            mTextView = textView;
43            mFormatAfterWatcherSet = formatAfterWatcherSet;
44        }
45
46        @Override
47        protected PhoneNumberFormattingTextWatcher doInBackground(Void... params) {
48            return PhoneNumberFormattingTextWatcherCompat.newInstance(mCountryCode);
49        }
50
51        @Override
52        protected void onPostExecute(PhoneNumberFormattingTextWatcher watcher) {
53            if (watcher == null || isCancelled()) {
54                return; // May happen if we cancel the task.
55            }
56
57            // Setting a text changed listener is safe even after the view is detached.
58            mTextView.addTextChangedListener(watcher);
59
60            // Forcing formatting the existing phone number
61            if (mFormatAfterWatcherSet) {
62                watcher.afterTextChanged(mTextView.getEditableText());
63            }
64        }
65    }
66
67    /**
68     * Delay-set {@link PhoneNumberFormattingTextWatcher} to a {@link TextView}.
69     */
70    public static final void setPhoneNumberFormattingTextWatcher(Context context,
71            TextView textView) {
72        setPhoneNumberFormattingTextWatcher(context, textView,
73                /* formatAfterWatcherSet =*/ false);
74    }
75
76    /**
77     * Delay-sets {@link PhoneNumberFormattingTextWatcher} to a {@link TextView}
78     * and formats the number immediately if formatAfterWaterSet is true.
79     * In some cases, formatting before user editing might cause unwanted results
80     * (e.g. the editor thinks the user changed the content, and would save
81     * when closed even when the user didn't make other changes.)
82     */
83    public static final void setPhoneNumberFormattingTextWatcher(
84            Context context, TextView textView, boolean formatAfterWatcherSet) {
85        new TextWatcherLoadAsyncTask(GeoUtil.getCurrentCountryIso(context),
86                textView, formatAfterWatcherSet)
87                .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void[]) null);
88    }
89}
90