package com.opensymphony.workflow.designer;import java.awt.Point;import java.awt.geom.Point2D;import java.io.*;import java.util.*;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import com.opensymphony.workflow.loader.XMLUtil;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.NodeList;public class Layout{  private String url;  private Collection entries = new ArrayList();  private Map allCells = new HashMap();  private Map results = new HashMap();  /**   * A Map of Maps, with keys being type names.   * Values are a map of id/bounds   */  private Map cellsByType = new HashMap();  private static class ResultLayout  {    float lineWidth;    int color;    int from;    int to;    Point2D labelPosition;    java.util.List routingPoints = new ArrayList();    ResultLayout(Point2D labelPosition, float lineWidth, int color, int from, int to)    {      if(labelPosition != null)        this.labelPosition = labelPosition;      this.lineWidth = lineWidth;      this.color = color;      this.from = from;      this.to = to;    }  }  public Layout()  {  }  public void setAllEntries(Collection entries)  {    this.entries = entries;  }  public String getUrl()  {    return url;  }  public void setUrl(String url)  {    this.url = url;  }  public Layout(InputStream in)  {    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();    dbf.setNamespaceAware(true);    DocumentBuilder db;    try    {      db = dbf.newDocumentBuilder();      Document doc;      doc = db.parse(in);      NodeList mActivitycell = doc.getElementsByTagName("cell");      for(int k = 0; k < mActivitycell.getLength(); k++)      {        Element element = (Element)mActivitycell.item(k);        CellPosition pos = new CellPosition(element);        double[] bound = pos.getBounds2D();        allCells.put(new Integer(pos.getId()), bound);        Map map = (Map)cellsByType.get(pos.getType());        if(map == null)        {          map = new HashMap();          cellsByType.put(pos.getType(), map);        }        map.put(new Integer(pos.getId()), bound);      }      NodeList list = doc.getElementsByTagName("connector");      for(int k = 0; k < list.getLength(); k++)      {        Element element = (Element)list.item(k);        ResultPosition pos = new ResultPosition(element);        ResultLayout r = new ResultLayout(pos.getLabelPosition(), pos.getLineWidth(), pos.getColor(), pos.getFrom(), pos.getTo());        results.put(new Integer(pos.getId()), r);      }      NodeList routing = doc.getElementsByTagName("routing");      for(int k = 0; k < routing.getLength(); k++)      {        Element element = (Element)routing.item(k);        try        {          int id = Integer.parseInt(element.getAttribute("id"));          int x = Integer.parseInt(element.getAttribute("x"));          int y = Integer.parseInt(element.getAttribute("y"));          ResultLayout result = (ResultLayout)results.get(new Integer(id));          if(result != null)          {            result.routingPoints.add(new Point(x, y));          }        }        catch(Exception e)        {          System.out.println("Error parsing routing position:" + e);        }      }    }    catch(Exception e)    {      e.printStackTrace();    }  }	public Layout(String in)	{    this(new ByteArrayInputStream(in.getBytes()));	}	  public void writeXML(PrintWriter out, int indent, WorkflowGraph graph)  {    out.println("<?xml version=\"1.0\"?>");    XMLUtil.printIndent(out, indent++);    out.println("<layout>");    Iterator it = entries.iterator();    while(it.hasNext())    {      Object next = it.next();      if(next instanceof WorkflowCell)      {        WorkflowCell cell = (WorkflowCell)next;        CellPosition pos = new CellPosition(cell);        pos.writeXML(out, indent);      }      else      {        ResultEdge edge = (ResultEdge)next;        ResultPosition pos = new ResultPosition(graph, edge);        pos.writeXML(out, indent);      }    }    XMLUtil.printIndent(out, --indent);    out.println("</layout>");    out.flush();    out.close();  }  /**   * Get the boounds for the specified key/type.   * @param key   * @param type   * @return double[] an array of 4 ints containing x, y, width, and height.   */  public double[] getBounds(int key, String type)  {    if(type == null)      return (double[])allCells.get(new Integer(key));    Map typeMap = (Map)cellsByType.get(type);    if(typeMap == null)    {      return null;    }    double[] bounds = (double[])typeMap.get(new Integer(key));    return bounds;  }  public int getColor(int resultKey)  {    ResultLayout rl = ((ResultLayout)results.get(new Integer(resultKey)));    return rl != null  ? rl.color : 0;  }  public int getFromPort(int resultKey)  {    ResultLayout rl = ((ResultLayout)results.get(new Integer(resultKey)));    return rl != null  ? rl.from : 0;  }  public int getToPort(int resultKey)  {    ResultLayout rl = ((ResultLayout)results.get(new Integer(resultKey)));    return rl != null  ? rl.to : 0;  }  public float getLineWidth(int resultKey)  {    ResultLayout resultLayout = (ResultLayout)results.get(new Integer(resultKey));    return resultLayout != null ? resultLayout.lineWidth : 2;  }  public Point2D getLabelPosition(int resultKey)  {    ResultLayout rl = ((ResultLayout)results.get(new Integer(resultKey)));    return rl != null && rl.labelPosition != null ? rl.labelPosition : null;  }  public java.util.List getRoutingPoints(int resultKey)  {    ResultLayout rl = ((ResultLayout)results.get(new Integer(resultKey)));    return rl != null && rl.routingPoints != null ? rl.routingPoints : Collections.EMPTY_LIST;  }}