| /* |
| * Copyright (C) 2006 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.text.method; |
| |
| import android.view.KeyEvent; |
| import android.view.KeyCharacterMap.KeyData; |
| import android.text.InputType; |
| import android.text.Spannable; |
| |
| /** |
| * For dialing-only text entry |
| * <p></p> |
| * As for all implementations of {@link KeyListener}, this class is only concerned |
| * with hardware keyboards. Software input methods have no obligation to trigger |
| * the methods in this class. |
| */ |
| public class DialerKeyListener extends NumberKeyListener |
| { |
| @Override |
| protected char[] getAcceptedChars() |
| { |
| return CHARACTERS; |
| } |
| |
| public static DialerKeyListener getInstance() { |
| if (sInstance != null) |
| return sInstance; |
| |
| sInstance = new DialerKeyListener(); |
| return sInstance; |
| } |
| |
| public int getInputType() { |
| return InputType.TYPE_CLASS_PHONE; |
| } |
| |
| /** |
| * Overrides the superclass's lookup method to prefer the number field |
| * from the KeyEvent. |
| */ |
| protected int lookup(KeyEvent event, Spannable content) { |
| int meta = event.getMetaState() | getMetaState(content); |
| int number = event.getNumber(); |
| |
| /* |
| * Prefer number if no meta key is active, or if it produces something |
| * valid and the meta lookup does not. |
| */ |
| if ((meta & (MetaKeyKeyListener.META_ALT_ON | MetaKeyKeyListener.META_SHIFT_ON)) == 0) { |
| if (number != 0) { |
| return number; |
| } |
| } |
| |
| int match = super.lookup(event, content); |
| |
| if (match != 0) { |
| return match; |
| } else { |
| /* |
| * If a meta key is active but the lookup with the meta key |
| * did not produce anything, try some other meta keys, because |
| * the user might have pressed SHIFT when they meant ALT, |
| * or vice versa. |
| */ |
| |
| if (meta != 0) { |
| KeyData kd = new KeyData(); |
| char[] accepted = getAcceptedChars(); |
| |
| if (event.getKeyData(kd)) { |
| for (int i = 1; i < kd.meta.length; i++) { |
| if (ok(accepted, kd.meta[i])) { |
| return kd.meta[i]; |
| } |
| } |
| } |
| } |
| |
| /* |
| * Otherwise, use the number associated with the key, since |
| * whatever they wanted to do with the meta key does not |
| * seem to be valid here. |
| */ |
| |
| return number; |
| } |
| } |
| |
| |
| /** |
| * The characters that are used. |
| * |
| * @see KeyEvent#getMatch |
| * @see #getAcceptedChars |
| */ |
| public static final char[] CHARACTERS = new char[] { |
| '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '#', '*', |
| '+', '-', '(', ')', ',', '/', 'N', '.', ' ', ';' |
| }; |
| |
| private static DialerKeyListener sInstance; |
| } |