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      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 
     17 package com.android.contacts.util;
     18 
     19 import android.content.Context;
     20 import android.os.AsyncTask;
     21 import android.telephony.PhoneNumberFormattingTextWatcher;
     22 import android.widget.TextView;
     23 
     24 import com.android.contacts.GeoUtil;
     25 import com.android.contacts.compat.PhoneNumberFormattingTextWatcherCompat;
     26 
     27 public 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