content: /*
   * 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;
  
  /**
   * This transformation method causes any newline characters (\n) to be
   * displayed as spaces instead of causing line breaks, and causes
   * carriage return characters (\r) to have no appearance.
   */
  public class SingleLineTransformationMethod
  extends ReplacementTransformationMethod {
      private static char[] ORIGINAL = new char[] { '\n', '\r' };
      private static char[] REPLACEMENT = new char[] { ' ', '\uFEFF' };
  
      /**
       * The characters to be replaced are \n and \r.
       */
      protected char[] getOriginal() {
          return ORIGINAL;
      }
  
      /**
       * The character \n is replaced with is space;
       * the character \r is replaced with is FEFF (zero width space).
       */
      protected char[] getReplacement() {
          return REPLACEMENT;
      }
  
      public static SingleLineTransformationMethod getInstance() {
          if (sInstance != null)
              return sInstance;
  
          sInstance = new SingleLineTransformationMethod();
          return sInstance;
      }
  
      private static SingleLineTransformationMethod sInstance;
  }
  