1 /* 2 * Copyright (C) 2007 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 com.google.android.util; 18 19 import android.content.Context; 20 import android.text.Spannable; 21 import android.text.SpannableStringBuilder; 22 import android.text.style.ImageSpan; 23 24 import java.util.ArrayList; 25 26 /** 27 * Parses a text message typed by the user looking for smileys. 28 */ 29 public class SmileyParser extends AbstractMessageParser { 30 31 private SmileyResources mRes; 32 33 public SmileyParser(String text, SmileyResources res) { 34 super(text, 35 true, // smilies 36 false, // acronyms 37 false, // formatting 38 false, // urls 39 false, // music 40 false // me text 41 ); 42 mRes = res; 43 } 44 45 @Override 46 protected Resources getResources() { 47 return mRes; 48 } 49 50 /** 51 * Retrieves the parsed text as a spannable string object. 52 * @param context the context for fetching smiley resources. 53 * @return the spannable string as CharSequence. 54 */ 55 public CharSequence getSpannableString(Context context) { 56 SpannableStringBuilder builder = new SpannableStringBuilder(); 57 58 if (getPartCount() == 0) { 59 return ""; 60 } 61 62 // should have only one part since we parse smiley only 63 Part part = getPart(0); 64 ArrayList<Token> tokens = part.getTokens(); 65 int len = tokens.size(); 66 for (int i = 0; i < len; i++) { 67 Token token = tokens.get(i); 68 int start = builder.length(); 69 builder.append(token.getRawText()); 70 if (token.getType() == AbstractMessageParser.Token.Type.SMILEY) { 71 int resid = mRes.getSmileyRes(token.getRawText()); 72 if (resid != -1) { 73 builder.setSpan(new ImageSpan(context, resid), 74 start, 75 builder.length(), 76 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 77 } 78 } 79 } 80 return builder; 81 } 82 83 } 84