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 | |
| 19 | import android.graphics.Rect; |
| 20 | import android.text.Editable; |
| 21 | import android.text.GetChars; |
| 22 | import android.text.Spannable; |
| 23 | import android.text.Spanned; |
| 24 | import android.text.SpannedString; |
| 25 | import android.text.TextUtils; |
| 26 | import android.view.View; |
| 27 | |
| 28 | /** |
| 29 | * This transformation method causes any newline characters (\n) to be |
| 30 | * displayed as spaces instead of causing line breaks, and causes |
| 31 | * carriage return characters (\r) to have no appearance. |
| 32 | */ |
| 33 | public class SingleLineTransformationMethod |
| 34 | extends ReplacementTransformationMethod { |
| 35 | private static char[] ORIGINAL = new char[] { '\n', '\r' }; |
| 36 | private static char[] REPLACEMENT = new char[] { ' ', '\uFEFF' }; |
| 37 | |
| 38 | /** |
| 39 | * The characters to be replaced are \n and \r. |
| 40 | */ |
| 41 | protected char[] getOriginal() { |
| 42 | return ORIGINAL; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * The character \n is replaced with is space; |
| 47 | * the character \r is replaced with is FEFF (zero width space). |
| 48 | */ |
| 49 | protected char[] getReplacement() { |
| 50 | return REPLACEMENT; |
| 51 | } |
| 52 | |
| 53 | public static SingleLineTransformationMethod getInstance() { |
| 54 | if (sInstance != null) |
| 55 | return sInstance; |
| 56 | |
| 57 | sInstance = new SingleLineTransformationMethod(); |
| 58 | return sInstance; |
| 59 | } |
| 60 | |
| 61 | private static SingleLineTransformationMethod sInstance; |
| 62 | } |