1 /* 2 * Copyright (C) 2008 Esmertec AG. 3 * Copyright (C) 2008 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package com.android.mms.model; 19 20 import java.io.UnsupportedEncodingException; 21 22 import org.w3c.dom.events.Event; 23 import org.w3c.dom.smil.ElementTime; 24 25 import android.content.Context; 26 import android.util.Log; 27 28 import com.android.mms.dom.smil.SmilMediaElementImpl; 29 import com.google.android.mms.pdu.CharacterSets; 30 31 public class TextModel extends RegionMediaModel { 32 private static final String TAG = "Mms/text"; 33 34 private CharSequence mText; 35 private final int mCharset; 36 TextModel(Context context, String contentType, String src, RegionModel region)37 public TextModel(Context context, String contentType, String src, RegionModel region) { 38 this(context, contentType, src, CharacterSets.UTF_8, new byte[0], region); 39 } 40 TextModel(Context context, String contentType, String src, int charset, byte[] data, RegionModel region)41 public TextModel(Context context, String contentType, String src, 42 int charset, byte[] data, RegionModel region) { 43 super(context, SmilHelper.ELEMENT_TAG_TEXT, contentType, src, 44 data != null ? data : new byte[0], region); 45 46 if (charset == CharacterSets.ANY_CHARSET) { 47 // By default, we use ISO_8859_1 to decode the data 48 // which character set wasn't set. 49 charset = CharacterSets.ISO_8859_1; 50 } 51 mCharset = charset; 52 mText = extractTextFromData(data); 53 } 54 extractTextFromData(byte[] data)55 private CharSequence extractTextFromData(byte[] data) { 56 if (data != null) { 57 try { 58 if (CharacterSets.ANY_CHARSET == mCharset) { 59 return new String(data); // system default encoding. 60 } else { 61 String name = CharacterSets.getMimeName(mCharset); 62 return new String(data, name); 63 } 64 } catch (UnsupportedEncodingException e) { 65 Log.e(TAG, "Unsupported encoding: " + mCharset, e); 66 return new String(data); // system default encoding. 67 } 68 } 69 return ""; 70 } 71 getText()72 public String getText() { 73 if (mText == null) { 74 mText = extractTextFromData(getData()); 75 } 76 77 // If our internal CharSequence is not already a String, 78 // re-save it as a String so subsequent calls to getText will 79 // be less expensive. 80 if (!(mText instanceof String)) { 81 mText = mText.toString(); 82 } 83 84 return mText.toString(); 85 } 86 setText(CharSequence text)87 public void setText(CharSequence text) { 88 mText = text; 89 notifyModelChanged(true); 90 } 91 cloneText()92 public void cloneText() { 93 mText = new String(mText.toString()); 94 } 95 getCharset()96 public int getCharset() { 97 return mCharset; 98 } 99 100 // EventListener Interface handleEvent(Event evt)101 public void handleEvent(Event evt) { 102 if (evt.getType().equals(SmilMediaElementImpl.SMIL_MEDIA_START_EVENT)) { 103 mVisible = true; 104 } else if (mFill != ElementTime.FILL_FREEZE) { 105 mVisible = false; 106 } 107 108 notifyModelChanged(false); 109 } 110 } 111