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