//*****************************************************************************
//
// Beenish Chaudry, Geetika Tewari, Elif Tosun and
// Ileana Streinu
//
// Summer 1999, Fall 1999, Spring 2000
//
//*****************************************************************************
//
// HandlerMousePoint.java
//
//*****************************************************************************

import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.io.*;
import java.util.*;


class HandlerMousePoint extends MouseAdapter{

FramePoint bf;

public HandlerMousePoint(FramePoint bff) 
  {
    super();
    bf = bff;
  }
  
  //***************************************
  //
  // MousePressed
  //
  //***************************************

public void mousePressed(MouseEvent e) {

Point pt = e.getPoint();  

//
// if mouse click is meant for setting the origin
//

if (bf.state.stateMouse == StateMouse.originP)
  {
    bf.ps.changeOrigin(pt);      
  }//end originP

//
// else, if mouse click is meant for working with a point object
//


if (bf.state.stateMouse == StateMouse.insertP) 
  {
    if (bf.state.stateAppearanceP == StateAppearance.defaultP)
      bf.crtPt = bf.state.defPoint;
    else  bf.crtPt = bf.state.point;
    
    bf.crtPt.setPointCoord(pt);
    bf.selNode = bf.ps.addPoint(bf.crtPt.Duplicate());
    
  } //end insertP


if (bf.state.stateMouse == StateMouse.moveP ||
    bf.state.stateMouse == StateMouse.deleteP ||
    bf.state.stateMouse == StateMouse.selectP ||
    bf.state.stateMouse == StateMouse.elabelP ||
    bf.state.stateMouse == StateMouse.moveLP ||
    bf.state.stateMouse == StateMouse.moveCP
     )
  {
    if (bf.ps.ptList != Constants.nullCell) 
      {
	bf.crtPt = bf.state.defPoint;
	bf.crtPt.setPointCoord(pt);
	bf.selNode = bf.ps.ptList.LSearch(bf.crtPt);
	if (bf.selNode == null && bf.state.stateMouse == StateMouse.selectP) 
	  // if not clicked on point, use rectangle selection 
	  {
	    bf.state.stateMouse = StateMouse.selectR;
	    bf.p1.x = pt.x; 
	    bf.p1.y = pt.y;
	    bf.p2.x = pt.x; 
	    bf.p2.y = pt.y;

	  }
      }
    else bf.selNode = null; 
    
    if(bf.state.stateMouse == StateMouse.selectP) 
      {
	if(bf.selNode != null ) 
	  {	
	    // deselect, if already selected
	    if(bf.selNode.data.selected == StateSelect.yes)
	      { 
		bf.selNode.data.selected = StateSelect.not;
		bf.selNode = null;
	    }	  
	    else bf.selNode.data.selected = StateSelect.yes;
	  }
      } //end selectP


    else if (bf.state.stateMouse == StateMouse.deleteP) 
      {
	// if current point is present in ps
	if (bf.selNode != null)
	  {
	    // one point only, or all selected points?
	    if(bf.selNode.data.selected == StateSelect.yes)
	      // if selected, delete all selected points
	      {
		bf.ps.DeleteSelected();
	      }
	    else
	      // if present but not selected, delete only one point
	      bf.ps.DeletePoint(bf.crtPt);
	  }
	
	bf.crtPt = null;
	
	bf.pc.repaint();
	bf.ps.notifyObservers();
	
      }// end deleteP
    
    
    else if(bf.state.stateMouse == StateMouse.elabelP) 
      {
	/*
	if(bf.selNode != null ) 
	  {
	    // edit label of point
	  }
	  */


	  if (bf.ps.ptList != Constants.nullCell)
	      {bf.crtPt = bf.state.defPoint;
	       bf.crtPt.setPointCoord(pt);
	       PointObj sNode = bf.ps.LSearch(bf.crtPt);
	       bf.crtPt = null;
	       if (sNode != null)
		   bf.ft.EditLabel(sNode);
		   
	      }
	 bf.pc.repaint();
      } //end elabelP

  }// end if moveP, selectP and labelP

bf.pc.repaint();

if (bf.lf != null) bf.lf.lc.repaint();

}// ends mousePressed
  
  
  //*****************************************
  //
  //  MouseReleased
  //
  //*****************************************

public void mouseReleased( MouseEvent e) 
{
  Point pt = e.getPoint();
  bf.displacement.x = bf.displacement.y = 0;

  if(bf.selNode != null)
    {
      bf.displacement.x = pt.x - bf.selNode.data.x; 
      bf.displacement.y = pt.y - bf.selNode.data.y;
    };
  
  // if the mouse click was for setting the origin, restore state
  
  if (bf.state.stateMouse == StateMouse.originP) 
    bf.state.RestoreStateMouse();
  
  // if the point is meant to be inserted
  
  else if(bf.state.stateMouse == StateMouse.insertP) 
    {
      if (bf.selNode != null)  bf.selNode.data.setPointCoord(pt);
    }
  
  // if the point was meant to be moved
  
  else if(bf.state.stateMouse == StateMouse.moveP)
    {
      if (bf.selNode != null)
	{
	  // one point only, or all selected points?
	  if(bf.selNode.data.selected == StateSelect.not)
	    {
	      bf.selNode.data.setPointCoord(pt);
	      bf.ps.MovePoint(bf.selNode.data);
	    }
	  else
	    {
	      bf.ps.TranslateSelected(bf.displacement);

	    }
	}
    }



  // if the label of the point was meant to be moved

  else if(bf.state.stateMouse == StateMouse.moveLP)
    {
      if (bf.selNode != null)
	{
	  // one point only, or all selected points?
	  if(bf.selNode.data.selected == StateSelect.not)
	    {
	      bf.selNode.data.MoveLabelPoint(pt);
	    }
	  else
	    {
	      bf.ps.TranslateLPSelected(bf.displacement);

	    }
	}
    }


  // if the coordinates of the point were meant to be moved

  else if(bf.state.stateMouse == StateMouse.moveCP)
    {
      if (bf.selNode != null)
	{
	  // one point only, or all selected points?
	  if(bf.selNode.data.selected == StateSelect.not)
	    {
	      bf.selNode.data.MoveCoordPoint(pt);
	    }
	  else
	    {
	      bf.ps.TranslateCPSelected(bf.displacement);

	    }
	}
    }


  // if selecting a rectangle of points 
  // ???

  else if(bf.state.stateMouse == StateMouse.selectR)
    {
      bf.p2.x = pt.x;
      bf.p2.y = pt.y;

      // p1 is first corner of rectangle
      // p2 is second corner of rectangle
      // look into the set of points, at all points with coordinates
      // inside rectangle p1, p2
      // select them with point.selected = StateSelect.yes

      bf.state.stateMouse = StateMouse.selectP;
      bf.ps.RectSelect();
    }

  
  bf.selNode = null;
  bf.crtPt = null;
  bf.pc.repaint();
  
  if(bf.lf != null) bf.lf.lc.repaint();   
  
}// ends mouseReleased

}//end class PointDownHandler