The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 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 android.text.method; |
| 18 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 19 | /** |
| 20 | * This transformation method causes any carriage return characters (\r) |
| 21 | * to be hidden by displaying them as zero-width non-breaking space |
| 22 | * characters (\uFEFF). |
| 23 | */ |
| 24 | public class HideReturnsTransformationMethod |
| 25 | extends ReplacementTransformationMethod { |
| 26 | private static char[] ORIGINAL = new char[] { '\r' }; |
| 27 | private static char[] REPLACEMENT = new char[] { '\uFEFF' }; |
| 28 | |
| 29 | /** |
| 30 | * The character to be replaced is \r. |
| 31 | */ |
| 32 | protected char[] getOriginal() { |
| 33 | return ORIGINAL; |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * The character that \r is replaced with is \uFEFF. |
| 38 | */ |
| 39 | protected char[] getReplacement() { |
| 40 | return REPLACEMENT; |
| 41 | } |
| 42 | |
| 43 | public static HideReturnsTransformationMethod getInstance() { |
| 44 | if (sInstance != null) |
| 45 | return sInstance; |
| 46 | |
| 47 | sInstance = new HideReturnsTransformationMethod(); |
| 48 | return sInstance; |
| 49 | } |
| 50 | |
| 51 | private static HideReturnsTransformationMethod sInstance; |
| 52 | } |