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      1 /*
      2  * Copyright (C) 2007-2008 Esmertec AG.
      3  * Copyright (C) 2007-2008 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.dom.smil.parser;
     19 
     20 import android.util.Config;
     21 import android.util.Log;
     22 
     23 import org.xml.sax.Attributes;
     24 import org.xml.sax.helpers.DefaultHandler;
     25 import org.w3c.dom.smil.SMILDocument;
     26 import org.w3c.dom.Element;
     27 import org.w3c.dom.Node;
     28 
     29 import com.android.mms.dom.smil.SmilDocumentImpl;
     30 
     31 public class SmilContentHandler extends DefaultHandler {
     32     private static final String TAG = "SmilContentHandler";
     33     private static final boolean DEBUG = false;
     34     private static final boolean LOCAL_LOGV = DEBUG ? Config.LOGD : Config.LOGV;
     35 
     36     private SMILDocument mSmilDocument;
     37     private Node mCurrentNode;
     38 
     39     /**
     40      * Resets this handler.
     41      *
     42      */
     43     public void reset() {
     44         mSmilDocument = new SmilDocumentImpl();
     45         mCurrentNode = mSmilDocument;
     46     }
     47 
     48     /**
     49      * Returns the SMILDocument.
     50      * @return The SMILDocument instance
     51      */
     52     public SMILDocument getSmilDocument() {
     53         return mSmilDocument;
     54     }
     55 
     56     @Override
     57     public void startElement(String uri, String localName, String qName, Attributes attributes) {
     58         if (LOCAL_LOGV) {
     59             Log.v(TAG, "SmilContentHandler.startElement. Creating element " + localName);
     60         }
     61         Element element = mSmilDocument.createElement(localName);
     62         if (attributes != null) {
     63             for (int i = 0; i < attributes.getLength(); i++) {
     64                 if (LOCAL_LOGV) {
     65                     Log.v(TAG, "Attribute " + i +
     66                         " lname = " + attributes.getLocalName(i) +
     67                         " value = " + attributes.getValue(i));
     68                 }
     69                 element.setAttribute(attributes.getLocalName(i),
     70                         attributes.getValue(i));
     71             }
     72         }
     73         if (LOCAL_LOGV) {
     74             Log.v(TAG, "Appending " + localName + " to " + mCurrentNode.getNodeName());
     75         }
     76         mCurrentNode.appendChild(element);
     77 
     78         mCurrentNode = element;
     79     }
     80 
     81     @Override
     82     public void endElement(String uri, String localName, String qName) {
     83         if (LOCAL_LOGV) {
     84             Log.v(TAG, "SmilContentHandler.endElement. localName " + localName);
     85         }
     86         mCurrentNode = mCurrentNode.getParentNode();
     87     }
     88 
     89     @Override
     90     public void characters(char[] ch, int start, int length) {
     91         if (LOCAL_LOGV) {
     92             Log.v(TAG, "SmilContentHandler.characters. ch = " + new String(ch, start, length));
     93         }
     94     }
     95 }
     96