WriterNode.java :  » Music-Sound » musikcube » doep » xml » Android Open Source

package doep.xml;

import java.util.ListIterator;
import java.util.Map;

public class WriterNode {
  public final String name;
  public String content  = "";
  protected WriterNode parent;
  protected Writer writer;
  private final java.util.List<WriterNode> children  = new java.util.LinkedList<WriterNode>();
  public final java.util.SortedMap<String,String> attributes = new java.util.TreeMap<String,String>();
  
  protected int state  = 0;
  
  protected WriterNode(String name,WriterNode parent){
    this.name  = name;
    this.parent  = parent;
    if(parent!=null){
      this.writer  = parent.writer;
    }
  }
  
  public final WriterNode ChildNode(String name){
    final WriterNode newNode  = new WriterNode(name,this);
    this.children.add(newNode);
    return newNode;
  }
  
  public final void End()
    throws java.io.IOException
  {
    if(this.parent.state==0){
      // Parent node start-tag needs to be written first
      this.parent.WriteStartTag();
    }
    if(this.state==0){
      // Start tag has not been written yet
      this.WriteStartTag();
    }
    if(this.state==1){
      // Start tag has been written, lets "End" all children
      ListIterator<WriterNode> it  = this.children.listIterator();
      while(it.hasNext()){
        WriterNode child  = it.next();
        child.End();
      }
      // Remove the ended children
      this.children.clear();
      
      // Next: Write the content and the end-tag
      this.writer.Write(this.content+"</"+this.name+">");
      
      // If this is the root node, lets write a NULL and Flush
      if(this.parent==this.writer){
        this.writer.Flush(true);
      }
      
      // Finished
      this.state  = 2;
    }
  }
  
  protected final void WriteStartTag()
    throws java.io.IOException
  {
    if(this.state==0){
      String tag  = "<"+this.name;
      for(Map.Entry<String,String> entry : this.attributes.entrySet()){
        tag  += " "+entry.getKey()+"=\""+entry.getValue()+"\"";
      }
      // Clear the attributes
      this.attributes.clear();
      
      tag  += ">";
  
      // Start tag written
      this.state  = 1;
      
      this.writer.Write(tag);
    }
  }
  
  
}