// File: Editor.java
// Classes: Editor
// Original Author:  Kedar Patankar
// Date 15 Jan 1997
// 

// Modified Authors:  Dave Boatwright and Kevin Carlson
// Date 22 Feb 1997

package uci.graphedit;

import java.util.Vector;
import java.util.Hashtable;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Panel;
import java.awt.CardLayout;
import java.awt.Scrollbar;
import java.awt.Dimension;

public class CdPanel extends Panel
{
  private UmlPalette _palette;
  private Editor _editor;

  private Panel _documentPanel;
  private Scrollpanel _documentScrollpanel;

  private int _documentCount;
  private int _noOfDocuments;

  private Vector _documentNames;
  private Vector _outStanding;

  private Hashtable _documentTable;
  private Document _document;

  private Dimension canvasSize;

  public Vector get_outStanding(){return _outStanding;}


  public void addInOutstanding(String s)
  {
	  if(_outStanding.contains(s))
		  return;
	  else
		  _outStanding.addElement(s);
  }

  public void removeFromOutstanding(String s)
  {
	  if(!_outStanding.contains(s))
		  return;
	  else
		  _outStanding.removeElement(s);
  }

  public int getNoOfOpenDocuments(){ return _noOfDocuments;}
  public void updateDocname(String previousName,String presentName)
  {
	  Document d=(Document)_documentTable.remove(previousName);
	  _documentNames.removeElement(previousName);
  	  _documentPanel.remove(d);
	  get_outStanding().removeElement(previousName);

	  d.setDocName(presentName);
	  _documentPanel.add(presentName,d);

	  _documentNames.addElement(presentName);
	  _documentTable.put(presentName,d);
  }

  public boolean isPresent(String s)
  {
	  Object o=_documentTable.get(s);
	  if(o==null)
		  return false;
	  else
		  return true;
  }

  public void showDocument(String s)
  {
       	  _documentPanel.remove(_document);
	  _document=(Document)_documentTable.get(s);
          _documentPanel.add(_document);
          _documentScrollpanel.home();
	  show();
	  _document.setCursorType(_editor);
  }
  public Document getDocument(String s){return (Document)_documentTable.get(s);}

  public void attach(String name,Document d)
  {
	  _documentPanel.add(name,d);
	  _documentNames.addElement(name);
	  _documentTable.put(name,d);
	  _noOfDocuments +=1;

	  _document=d;
          _document.resize(canvasSize.width, canvasSize.height);
          _document.setBackground( new Color(255,255,255) );
          _documentScrollpanel.home();
	  show();
  }
  public String detach(String name,Document d)
  {
	  _documentPanel.remove(d);
	  _documentTable.remove(name);
	  _documentNames.removeElement(name);
	  _noOfDocuments -=1;
	  get_outStanding().removeElement(name);
	  if(_noOfDocuments>=1)
	  {
		  String title=(String)_documentNames.elementAt(0);
		  _document=(Document)_documentTable.get(title);
                  _documentPanel.add(_document);
                  _documentScrollpanel.home();
		  return title;
	  }
	  else
	  {
		  _document=null;
		  return null;
	  }
  }

  public int nextDocumentNumber()
  {
	  _documentCount +=1;
	  return _documentCount;
  }

  public void resizeCanvas( int width, int height ){
       canvasSize.width = width;
       canvasSize.height = height;
       _documentScrollpanel.resizeCanvas( canvasSize );
       if( _document != null ){
         _document.resize( width, height );	
       }
  }

  public void refresh()
  {
	  _palette.refresh();
  }

  /** Construct a new Editor to edit the given NetList */
  public CdPanel(Editor editor)
  {
	  _editor=editor;
	  
         setLayout(new BorderLayout());

        canvasSize = new Dimension();

        _documentScrollpanel = new Scrollpanel(2000,2000);
        this.resizeCanvas(2000,2000);

        _documentPanel = _documentScrollpanel.getPanel();
        
	_documentPanel.setLayout( null );

	add("Center",_documentScrollpanel);

	_palette=new UmlPalette(_editor);
	_palette.setBackground(Color.gray);
	add("West",_palette);

	_documentNames=new Vector();
	_outStanding=new Vector();
	_documentTable=new Hashtable();
	_documentCount=0;
	_noOfDocuments=0;
   }


 public Document curDocument(){ return _document;}

}