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 */ getOriginal()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 */ getReplacement()49 protected char[] getReplacement() { 50 return REPLACEMENT; 51 } 52 getInstance()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 } 63