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

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


public class State
{

// Mouse Click state

int stateMouse; 
int oldStateMouse; // old state - restore edit state after setting the origin

// Key State

int stateKey;
int oldStateKey;

// current object settings, for selected and new objects

PointObj defPoint;  // a temporary point with default settings
PointObj point; //a temporary point used to store the information while
                   // a point is clicked on, or dragged 
                   //so that a new PointObj will not be
                   //created every time the mouse is clicked

  /*
  // For further extensions

  LineObj line; //a temporary line used to store the information while
                   // a new line is being created -  clicked on, or dragged 
                   //so that a new pt will not be
                   //created every time the mouse is clicked

  */

int stateAppearanceP; // whether to use default or current settings
  // when inserting new points

int stateAppearanceL; // whether to use default or current settings
  // when inserting new lines


// Resizing 

  int stateResize; 

// Origin

int stateOrigin;

// Frame of Reference, Grid, Parabola

  // for points

int stateFrameRefer;
int stateGrid;
int stateParabola;
int stateAxes;
int stateOrCoord;

// Colors, various general

Color background;
Color grid_line_color;
Color parabola_color;
Color axes_color;
Color frame_of_ref_color;
Color or_coord_color;

// Labels, Coordinates

int stateLabel;  // controls how the point labels are displayed, 
                   // for the whole set of points
int stateCoord; // controls how the coordinates of the points are displayed
int stateEquation; // controls how the equation of a line is displayed



//*************************
//
// State Constructor
//
//*************************

public State() {

// mouse

stateMouse = StateMouse.insertP;
oldStateMouse = stateMouse;

// key state

stateKey = StateKey.inactive;
oldStateKey = StateKey.inactive;

// appearance

defPoint = new PointObj(); 
point = new PointObj();

stateAppearanceP = StateAppearance.currentP;
stateAppearanceL = StateAppearance.currentL;

// line = new LineObj(); // later



// is window resizable ?

stateResize = StateResize.not;

// origin

stateOrigin = StateOrigin.standard;

// Drawing states for windows

// frame of reference, grid, parabola

stateFrameRefer = StateFrameRefer.not;
stateGrid   = StateGrid.not;
stateParabola = StateParabola.not;
stateAxes = StateAxes.yes;
stateOrCoord = StateOrCoord.not;

// Colors for window options

background = Constants.backgroundP;
grid_line_color = Constants.gridC;
parabola_color = Constants.paraC;
axes_color = Constants.axesC;
frame_of_ref_color = Constants.frameC;
or_coord_color = Constants.orcoordC;

// Labels

stateLabel = StateLabel.insert;
stateCoord = StateCoord.without;
stateEquation = StateEquation.without;


}// end constructor


//*************************
//
// Reset
//
//*************************

public void Reset() {

// mouse

stateMouse = StateMouse.insertP;
oldStateMouse = stateMouse;

// key state

stateKey = StateKey.inactive;
oldStateKey = StateKey.inactive;


// appearance

defPoint.Reset(); // theoretically, the appearance of this point 
                  // never changes, but the x y coord are used
point.Reset();

stateAppearanceP = StateAppearance.currentP;
stateAppearanceL = StateAppearance.currentL;

          // line.Reset(); // later

// window resizable ?

stateResize = StateResize.not;

// origin

stateOrigin = StateOrigin.standard;

// frame of reference, grid, parabola, axes

stateFrameRefer = StateFrameRefer.not;
stateGrid   = StateGrid.not;
stateParabola = StateParabola.not;
stateAxes = StateAxes.yes;
stateOrCoord = StateOrCoord.not;

// labels, coordinates

stateLabel = StateLabel.insert;
stateCoord = StateCoord.without;
stateEquation = StateEquation.without;

// Colors for window options

background = Constants.backgroundP;
grid_line_color = Constants.gridC;
parabola_color = Constants.paraC;
axes_color = Constants.axesC;
frame_of_ref_color = Constants.frameC;
or_coord_color = Constants.orcoordC;

}//end Reset


//************************************
//
// SaveStateMouse
//
// save the state of the mouse
// used in mouseHandler while setting the origin
//
//************************************

public void SaveStateMouse() {

oldStateMouse = stateMouse;

}//end SaveStateMouse



//************************************
//
// RestoreStateMouse
//
// restore the old state of the mouse
// used in mouseHandler after setting the origin
//
//************************************

public void RestoreStateMouse() {

stateMouse = oldStateMouse;

}//end RestoreStateMouse



}//end of class State