| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.telephony; |
| |
| import com.android.i18n.phonenumbers.AsYouTypeFormatter; |
| import com.android.i18n.phonenumbers.PhoneNumberUtil; |
| |
| import android.telephony.PhoneNumberUtils; |
| import android.text.Editable; |
| import android.text.Selection; |
| import android.text.TextWatcher; |
| |
| import java.util.Locale; |
| |
| /** |
| * Watches a {@link android.widget.TextView} and if a phone number is entered |
| * will format it. |
| * <p> |
| * Stop formatting when the user |
| * <ul> |
| * <li>Inputs non-dialable characters</li> |
| * <li>Removes the separator in the middle of string.</li> |
| * </ul> |
| * <p> |
| * The formatting will be restarted once the text is cleared. |
| */ |
| public class PhoneNumberFormattingTextWatcher implements TextWatcher { |
| |
| /** |
| * Indicates the change was caused by ourselves. |
| */ |
| private boolean mSelfChange = false; |
| |
| /** |
| * Indicates the formatting has been stopped. |
| */ |
| private boolean mStopFormatting; |
| |
| private AsYouTypeFormatter mFormatter; |
| |
| /** |
| * The formatting is based on the current system locale and future locale changes |
| * may not take effect on this instance. |
| */ |
| public PhoneNumberFormattingTextWatcher() { |
| this(Locale.getDefault().getCountry()); |
| } |
| |
| /** |
| * The formatting is based on the given <code>countryCode</code>. |
| * |
| * @param countryCode the ISO 3166-1 two-letter country code that indicates the country/region |
| * where the phone number is being entered. |
| */ |
| public PhoneNumberFormattingTextWatcher(String countryCode) { |
| if (countryCode == null) throw new IllegalArgumentException(); |
| mFormatter = PhoneNumberUtil.getInstance().getAsYouTypeFormatter(countryCode); |
| } |
| |
| @Override |
| public void beforeTextChanged(CharSequence s, int start, int count, |
| int after) { |
| if (mSelfChange || mStopFormatting) { |
| return; |
| } |
| // If the user manually deleted any non-dialable characters, stop formatting |
| if (count > 0 && hasSeparator(s, start, count)) { |
| stopFormatting(); |
| } |
| } |
| |
| @Override |
| public void onTextChanged(CharSequence s, int start, int before, int count) { |
| if (mSelfChange || mStopFormatting) { |
| return; |
| } |
| // If the user inserted any non-dialable characters, stop formatting |
| if (count > 0 && hasSeparator(s, start, count)) { |
| stopFormatting(); |
| } |
| } |
| |
| @Override |
| public synchronized void afterTextChanged(Editable s) { |
| if (mStopFormatting) { |
| // Restart the formatting when all texts were clear. |
| mStopFormatting = !(s.length() == 0); |
| return; |
| } |
| if (mSelfChange) { |
| // Ignore the change caused by s.replace(). |
| return; |
| } |
| String formatted = reformat(s, Selection.getSelectionEnd(s)); |
| if (formatted != null) { |
| int rememberedPos = mFormatter.getRememberedPosition(); |
| mSelfChange = true; |
| s.replace(0, s.length(), formatted, 0, formatted.length()); |
| // The text could be changed by other TextWatcher after we changed it. If we found the |
| // text is not the one we were expecting, just give up calling setSelection(). |
| if (formatted.equals(s.toString())) { |
| Selection.setSelection(s, rememberedPos); |
| } |
| mSelfChange = false; |
| } |
| PhoneNumberUtils.ttsSpanAsPhoneNumber(s, 0, s.length()); |
| } |
| |
| /** |
| * Generate the formatted number by ignoring all non-dialable chars and stick the cursor to the |
| * nearest dialable char to the left. For instance, if the number is (650) 123-45678 and '4' is |
| * removed then the cursor should be behind '3' instead of '-'. |
| */ |
| private String reformat(CharSequence s, int cursor) { |
| // The index of char to the leftward of the cursor. |
| int curIndex = cursor - 1; |
| String formatted = null; |
| mFormatter.clear(); |
| char lastNonSeparator = 0; |
| boolean hasCursor = false; |
| int len = s.length(); |
| for (int i = 0; i < len; i++) { |
| char c = s.charAt(i); |
| if (PhoneNumberUtils.isNonSeparator(c)) { |
| if (lastNonSeparator != 0) { |
| formatted = getFormattedNumber(lastNonSeparator, hasCursor); |
| hasCursor = false; |
| } |
| lastNonSeparator = c; |
| } |
| if (i == curIndex) { |
| hasCursor = true; |
| } |
| } |
| if (lastNonSeparator != 0) { |
| formatted = getFormattedNumber(lastNonSeparator, hasCursor); |
| } |
| return formatted; |
| } |
| |
| private String getFormattedNumber(char lastNonSeparator, boolean hasCursor) { |
| return hasCursor ? mFormatter.inputDigitAndRememberPosition(lastNonSeparator) |
| : mFormatter.inputDigit(lastNonSeparator); |
| } |
| |
| private void stopFormatting() { |
| mStopFormatting = true; |
| mFormatter.clear(); |
| } |
| |
| private boolean hasSeparator(final CharSequence s, final int start, final int count) { |
| for (int i = start; i < start + count; i++) { |
| char c = s.charAt(i); |
| if (!PhoneNumberUtils.isNonSeparator(c)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |