99 lines
3.6 KiB
Java
99 lines
3.6 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.telephony;
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import android.text.Editable;
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import android.text.Selection;
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import android.text.TextWatcher;
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import android.widget.TextView;
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import java.util.Locale;
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/**
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* Watches a {@link TextView} and if a phone number is entered will format it using
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* {@link PhoneNumberUtils#formatNumber(Editable, int)}. The formatting is based on
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* the current system locale when this object is created and future locale changes
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* may not take effect on this instance.
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*/
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public class PhoneNumberFormattingTextWatcher implements TextWatcher {
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static private int sFormatType;
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static private Locale sCachedLocale;
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private boolean mFormatting;
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private boolean mDeletingHyphen;
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private int mHyphenStart;
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private boolean mDeletingBackward;
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public PhoneNumberFormattingTextWatcher() {
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if (sCachedLocale == null || sCachedLocale != Locale.getDefault()) {
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sCachedLocale = Locale.getDefault();
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sFormatType = PhoneNumberUtils.getFormatTypeForLocale(sCachedLocale);
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}
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}
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public synchronized void afterTextChanged(Editable text) {
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// Make sure to ignore calls to afterTextChanged caused by the work done below
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if (!mFormatting) {
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mFormatting = true;
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// If deleting the hyphen, also delete the char before or after that
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if (mDeletingHyphen && mHyphenStart > 0) {
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if (mDeletingBackward) {
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if (mHyphenStart - 1 < text.length()) {
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text.delete(mHyphenStart - 1, mHyphenStart);
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}
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} else if (mHyphenStart < text.length()) {
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text.delete(mHyphenStart, mHyphenStart + 1);
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}
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}
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PhoneNumberUtils.formatNumber(text, sFormatType);
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mFormatting = false;
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}
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}
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public void beforeTextChanged(CharSequence s, int start, int count, int after) {
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// Check if the user is deleting a hyphen
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if (!mFormatting) {
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// Make sure user is deleting one char, without a selection
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final int selStart = Selection.getSelectionStart(s);
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final int selEnd = Selection.getSelectionEnd(s);
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if (s.length() > 1 // Can delete another character
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&& count == 1 // Deleting only one character
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&& after == 0 // Deleting
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&& s.charAt(start) == '-' // a hyphen
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&& selStart == selEnd) { // no selection
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mDeletingHyphen = true;
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mHyphenStart = start;
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// Check if the user is deleting forward or backward
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if (selStart == start + 1) {
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mDeletingBackward = true;
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} else {
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mDeletingBackward = false;
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}
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} else {
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mDeletingHyphen = false;
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}
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}
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}
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public void onTextChanged(CharSequence s, int start, int before, int count) {
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// Does nothing
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}
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}
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