Untitled

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.*;
import java.util.Stack;

public class DrawingPanel extends JPanel {
    private Shape currentShape;
    private MyMenu menu;
    private Point startingPoint;
    private Point endingPoint;
    private Point startPoint;//pointClicked
    private Point endPoint;
    private boolean loadSelected;
    private boolean deleteSelected;
    private Stack<Shape> shapeStack = new Stack<>();
    private Color borderColor;

    public DrawingPanel() {
    }

    public DrawingPanel(MyMenu menu) {
        this();
        this.menu = menu;
        addMouseListener(new DrawingListener());
        addMouseMotionListener(new DrawingListener());
    }

    class DrawingListener extends MouseAdapter {

        @Override
        public void mousePressed(MouseEvent e) {
            startingPoint = new Point(e.getX(), e.getY());
            startPoint = new Point(e.getX(), e.getY());
            repaint();
        }

        @Override
        public void mouseClicked(MouseEvent e) {
            //startPoint = new Point(e.getX(), e.getY());
            //deleteSelected = menu.isDeletePressed();


        }

        @Override
        public void mouseDragged(MouseEvent e) {
            endingPoint = new Point(e.getX(), e.getY());

            String shapeSelected = menu.getShapeSelected();

            if (shapeSelected.equals("Line"))
                currentShape = new Line(startingPoint.x, startingPoint.y, endingPoint.x, endingPoint.y, borderColor);
            if (shapeSelected.equals("Oval"))
                currentShape = new Oval(startingPoint.x, startingPoint.y, endingPoint.x, endingPoint.y, borderColor);
            if (shapeSelected.equals("Rectangle"))
                currentShape = new Rectangle(startingPoint.x, startingPoint.y, endingPoint.x, endingPoint.y,borderColor);
            if (shapeSelected.equals("Square"))
                currentShape = new Square(startingPoint.x, startingPoint.y, endingPoint.x, endingPoint.y, borderColor);
            if (shapeSelected.equals("Circle"))
                currentShape = new Circle(startingPoint.x, startingPoint.y, endingPoint.x, endingPoint.y,borderColor);
//            if (shapeSelected.equals("Rectangle"))
//                currentShape = new Rectangle(startingPoint.x, startingPoint.y, endingPoint.x, endingPoint.y);

            repaint();
        }

        @Override
        public void mouseReleased(MouseEvent e) {
            if(currentShape != null) {
                MyMenu.getShapeList().add(currentShape);
                repaint();
            }
           //currentShape = null;
        }
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g1 = (Graphics2D) g;
        //deleteSelected = menu.isDeletePressed();
        borderColor = menu.getBorderColor();
        deleteSelected = menu.isDeletePressed();

        if (currentShape != null) {//toDO:solve null pointer exception
//            g1.setColor(Color.green);
//            g1.fillRect(currentShape.startingPoint.x , currentShape.startingPoint.y, currentShape.endingPoint.x, currentShape.endingPoint.y);
//            g1.setColor(Color.RED);
//            g1.drawRect(currentShape.startingPoint.x, currentShape.startingPoint.y, currentShape.endingPoint.x, currentShape.endingPoint.y);
            currentShape.drawShape(g1, currentShape.startingPoint, currentShape.endingPoint);//draw the current then the rest
            for (Shape s : MyMenu.getShapeList()) {
                //g1.setStroke(new BasicStroke(2));
                drawingShape(g1, s);
            }
        }
        //System.out.println(currentShape);
        loadSelected = menu.isLoadFile();
        if(loadSelected) {
            load(g);
        }

        if(deleteSelected) {
            delete(g);
            for (Shape s : MyMenu.getShapeList()) {
                //g1.setStroke(new BasicStroke(2));
                drawingShape(g1, s);
//            }
        }}

        }


    public void drawingShape(Graphics g, Shape s) {
        s.drawShape(g, s.startingPoint, s.endingPoint);
    }

    public void load(Graphics g) {
        ObjectInputStream in;
        Shape s;

        try {
            in = new ObjectInputStream(new FileInputStream("Shapes.txt"));

            while ((s = (Shape) in.readObject()) != null) {
                drawingShape(g, s);
                MyMenu.getShapeList().add(s);
                repaint();
            }
            loadSelected = false;

        } catch (EOFException eof) {
            return;
        } catch (IOException | ClassNotFoundException e) {
            e.printStackTrace();
        }
    }


    public void delete(Graphics g) {
           Shape s = selectedShape(startPoint);
           if(currentShape == s)
               remove(currentShape);
           remove(s);
           currentShape = null;
           repaint();
//
//           }
        }

        public void remove(Shape s) {
            MyMenu.getShapeList().remove(s);
        }

        public Shape selectedShape(Point pointClicked) {
            Shape q = null;
            for (Shape s : MyMenu.getShapeList()) {
                if (s.contains(pointClicked)) {
                    q = s;
                    shapeStack.push(s);
                    break;
                }
            }
            return q;
        }
}