package es.inteco.eni.swing;
   
   import java.awt.BasicStroke;
   import java.awt.Color;
   import java.awt.Dimension;
   import java.awt.Font;
   import java.awt.Graphics;
   import java.awt.Graphics2D;
   import java.awt.geom.RoundRectangle2D;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  import java.util.Map.Entry;
  
  import javax.swing.JPanel;
  
  import es.inteco.eni.commons.EniConstants;
  import es.inteco.eni.xml.XmlNode;
  import es.inteco.eni.xml.XmlTree;
  
  /**
   * Panel que representa la vista transformada
   * 
   * 
   *
   */
  public class TransformedViewPane extends JPanel{
  
  	/**
  	 * Version
  	 */
  	private static final long serialVersionUID = 1L;
  	/**
  	 * Longitud maxima de una etiqueta
  	 */
  	private static final int MAX_LENGTH_TAG = 24;
  	/**
  	 * Ancho de un nodo hoja
  	 */
  	public static final int LEAF_NODE_WIDTH = 140;
  	/**
  	 * Alto de un nodo hoja
  	 */
  	private static final int LEAF_NODE_HEIGHT = 13;
  	/**
  	 * Espacio entre nodos
  	 */
  	private static final int SPACE_NODES = 10;
  	/**
  	 * Ancho del arco de los nodos
  	 */
  	private static final int ARCW_NODE = 10;
  	/**
  	 * Alto del arco de los nodos
  	 */
  	private static final int ARCH_NODE = 10;
  	/**
  	 * Color del fondo de los nodos
  	 */
  	private static final Color BACKGROUND_NODE_COLOR = Color.WHITE;
  
  	/***
  	 * Lista de colores de los nodos
  	 */
  	private static final List<Color> COLOR_LIST = new ArrayList<Color>();
  	static{
  		COLOR_LIST.add(new Color(0,38,100));	
  		COLOR_LIST.add(new Color(0,90,140));	
  		COLOR_LIST.add(new Color(0,123,165));
  		COLOR_LIST.add(new Color(0,185,228)); 
  		COLOR_LIST.add(new Color(192,192,192));	 
  	}
  
  
  
  	/**
  	 * Arbol
  	 */
  	private XmlTree xmlTree;
  	/**
  	 * Ventana del validador
  	 */
  	private ENIValidator eniValidator;
  	/**
  	 * Posiciones de los nodos
  	 */
  	private List<XmlNodePosition> xmlNodePositions;
  
  	/**
  	 * Constructor
  	 * @param eniValidator Ventana del validador
  	 */
  	public TransformedViewPane(ENIValidator eniValidator){
  		this.eniValidator = eniValidator;
  		addMouseListener(new TransformedViewMouseListener(eniValidator, this));
  	}
  
  	/**
 	 * 
 	 * @see javax.swing.JComponent#paintComponent(java.awt.Graphics)
 	 */
 	protected void paintComponent(Graphics g) {
 		super.paintComponent(g);
 
 		//Inicializamos los nodos
 		xmlNodePositions = new ArrayList<XmlNodePosition>();
 		if(xmlTree!=null){
 			//Pintamos los nodos
 			paintNodes(xmlTree.getXmlNodes(), (Graphics2D)g, null);
 		}
 	}
 
 
 	private void paintNodes(Map<String, XmlNode> xmlNodes, Graphics2D graphics2, RoundRectangle2D parentRectangle) {
 		Iterator<Entry<String, XmlNode>> it = xmlNodes.entrySet().iterator();
 		int acumulativeLeafDescendent = 0;
 		while(it.hasNext()){
 			Entry<String, XmlNode> entry = it.next();
 			XmlNode xmlNode = entry.getValue();
 			RoundRectangle2D rectangle = paintXmlNode(xmlNode, graphics2, parentRectangle,acumulativeLeafDescendent);
 			paintNodes(xmlNode.getChilds(), graphics2, rectangle);
 			acumulativeLeafDescendent += xmlNode.getTotalLeafDescendants();
 		}
 
 	}
 
 
 	/**
 	 * Pinta un nodo XML en la vista transformada
 	 * @param xmlNode Nodo xml
 	 * @param graphics2 g
 	 * @param parentRectangle Rectangulo que representa el nodo padre
 	 * @param acumulativeLeafDescendent
 	 * @return Nodo pintado
 	 */
 	private RoundRectangle2D paintXmlNode(XmlNode xmlNode, Graphics2D graphics2, RoundRectangle2D parentRectangle, int acumulativeLeafDescendent){
 		int x = (LEAF_NODE_WIDTH + SPACE_NODES) * (xmlNode.getDeep()-1) + SPACE_NODES;
 		int parentY = parentRectangle!=null ? Double.valueOf(parentRectangle.getY()).intValue() : SPACE_NODES;
 		int y =  parentY + (LEAF_NODE_HEIGHT + SPACE_NODES) * acumulativeLeafDescendent;
 		int width = LEAF_NODE_WIDTH;
 		int height = (LEAF_NODE_HEIGHT + SPACE_NODES) * xmlNode.getTotalLeafDescendants() - SPACE_NODES;
 
 		//Color
 		int colorIndex = (xmlNode.getDeep() -1) % COLOR_LIST.size();
 		Color lineColor = COLOR_LIST.get(colorIndex);
 		
 		
 		graphics2.setColor(lineColor);
 		//Marcamos los elementos que representan ficheros
 		if(FileOpener.isFile(xmlNode)){
 			graphics2.setStroke(new BasicStroke(8.0f));
 		}else{
 			graphics2.setStroke(new BasicStroke(3.0f));
 		}
 		RoundRectangle2D roundedRectangleBorder = new RoundRectangle2D.Float(x, y, width, height, ARCW_NODE, ARCH_NODE);
 		graphics2.draw(roundedRectangleBorder);
 
 		graphics2.setColor(BACKGROUND_NODE_COLOR);
 		RoundRectangle2D roundedRectangleContent = new RoundRectangle2D.Float(x, y, width, height, ARCW_NODE, ARCH_NODE);
 		graphics2.fill(roundedRectangleContent);
 
 		graphics2.setFont(new Font("Arial", Font.PLAIN, 10));
 		graphics2.setColor(Color.black);
 		graphics2.drawString(getLName(xmlNode.getlName()), x+5 ,y+10);
 
 		//Añadimos nodo xml y su posicion
 		xmlNodePositions.add(new XmlNodePosition(x, y, width, height, xmlNode));
 		return roundedRectangleBorder;
 	}
 
 
 	private String getLName(String lName){
 		return lName.length()>MAX_LENGTH_TAG ? lName.substring(0, MAX_LENGTH_TAG-3) + "..." : lName;
 	}
 
 	/**
 	 * @return Devuelve el valor del campo xmlTree
 	 */
 	public XmlTree getXmlTree() {
 		return xmlTree;
 	}
 
 	/**
 	 * @param Asigna al campo xmlTree el valor del parámetro xmlTree
 	 */
 	public void setXmlTree(XmlTree xmlTree) {
 		this.xmlTree = xmlTree;
 		int deep = xmlTree!=null ? xmlTree.getDeep() : 0;
 		int leafsNum = xmlTree!=null ?  xmlTree.getLeafsNum() : 0;
 		//Establece el tamaño de la vista transformada en función de los nodos del árbol
 		int width = (LEAF_NODE_WIDTH + SPACE_NODES ) * deep + SPACE_NODES;
 		int height = (LEAF_NODE_HEIGHT + SPACE_NODES ) * leafsNum + SPACE_NODES;
 		setPreferredSize(new Dimension(width, height));
 		setSize(new Dimension(width, height));
 	}
 
 	/**
 	 * @return Devuelve el valor del campo eniValidator
 	 */
 	public ENIValidator getEniValidator() {
 		return eniValidator;
 	}
 
 	/**
 	 * @param Asigna al campo eniValidator el valor del parámetro eniValidator
 	 */
 	public void setEniValidator(ENIValidator eniValidator) {
 		this.eniValidator = eniValidator;
 	}
 
 	/**
 	 * @return Devuelve el valor del campo xmlNodePositions
 	 */
 	public List<XmlNodePosition> getXmlNodePositions() {
 		return xmlNodePositions;
 	}
 
 	/**
 	 * @param Asigna al campo xmlNodePositions el valor del parámetro xmlNodePositions
 	 */
 	public void setXmlNodePositions(List<XmlNodePosition> xmlNodePositions) {
 		this.xmlNodePositions = xmlNodePositions;
 	}
 }