content: /*******************************************************************************
   * Software Name : RCS IMS Stack
   *
   * Copyright (C) 2010-2016 Orange.
   *
   * 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 com.gsma.rcs.ri.utils;
  
  import android.content.Context;
  import android.text.Spannable;
  import android.text.SpannableStringBuilder;
  import android.text.style.ImageSpan;
  
  import java.util.ArrayList;
  
  /**
   * Parses a text message typed by the user looking for smileys.
   */
  public class SmileyParser extends AbstractMessageParser {
  
      private Smileys mRes;
  
      public SmileyParser(String text, Smileys res) {
          super(text, true, // smileys
                  false, // acronyms
                  false, // formatting
                  false, // urls
                  false, // music
                  false // me text
          );
          mRes = res;
      }
  
      @Override
      protected Resources getResources() {
          return mRes;
      }
  
      /**
       * Retrieves the parsed text as a spannable string object.
       * 
       * @param context the context for fetching smiley resources.
       * @return the spannable string as CharSequence.
       */
      public CharSequence getSpannableString(Context context) {
          SpannableStringBuilder builder = new SpannableStringBuilder();
  
          if (getPartCount() == 0) {
              return "";
          }
  
          // should have only one part since we parse smiley only
          Part part = getPart(0);
          ArrayList<Token> tokens = part.getTokens();
          int len = tokens.size();
          for (int i = 0; i < len; i++) {
              Token token = tokens.get(i);
              int start = builder.length();
              builder.append(token.getRawText());
              if (token.getType() == AbstractMessageParser.Token.Type.SMILEY) {
                  int resid = mRes.getSmileyRes(token.getRawText());
                  if (resid != -1) {
                      builder.setSpan(new ImageSpan(context, resid), start, builder.length(),
                              Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                  }
              }
          }
          return builder;
      }
  
  }
  