/*
 * FigureWindow.java
 *
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.Graphics.*;

public class FigureWindow extends JPanel{

	// components of the panel
	FigurePanel mFigurePanel;
	JLabel mLabel1, mLabel2;
	JComboBox mComboBox;
	JTextField mTextfield;
	
	// Constructor
	public FigureWindow(){
		super(new BorderLayout()); // calls the constructor of JPanel with BorderLayout

		
		// add components to FigureWindow's container
		Box box = Box.createHorizontalBox();

		mLabel1 = new JLabel("Kies figuur: ");
		box.add(mLabel1);
		
		String types[] = {"Vierkant", "Rechthoek", "Circel", "Driehoek"};
		mComboBox = new JComboBox(types);
		box.add(mComboBox);
		
		mLabel2 = new JLabel("Grootte: ");
		box.add(mLabel2);
		mTextfield = new JTextField("10", 5);
		box.add(mTextfield);
		add( box, BorderLayout.NORTH);
		
		mFigurePanel = new FigurePanel();
		add(mFigurePanel, BorderLayout.CENTER);

	}

	// HOOFDPROGRAMMA
	public static void main( String[] args)	{ // called at program start
		JFrame frame = new JFrame("FigureWindow");
		
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // when cross at top right is pressed

		FigureWindow window = new FigureWindow();
		frame.setContentPane(window);

		// figuren toevoegen aan de panel
	   	Quadrangle q = new Quadrangle(50, 50, 30);
	   	window.mFigurePanel.AddFigure(q);
	   	Rectangle r = new Rectangle(150, 100, 50, 30);
	   	window.mFigurePanel.AddFigure(r);
	   	Circle c = new Circle(50, 80, 30);	   
		window.mFigurePanel.AddFigure(c);
		Triangle t = new Triangle(200, 200, 60);
		window.mFigurePanel.AddFigure(t);

		frame.pack(); // berekent grootte vd frame adhv groottes vd componenten (preferred sizes)
		frame.show(); // should be the last operation

	}
	
	// inner class
	class FigurePanel extends JPanel {
	
		Figure mFigures[];// array
		final int MAX_NBR_FIGURES = 20; // constante
		int mNbrFigures;
		
	    FigurePanel()
	     {
	     	setBackground(Color.white);
		   	setPreferredSize( new Dimension(400, 400)); // constructor: Dimension(int width, int height); 
		   
		   	mNbrFigures = 0;
		   	mFigures = new Figure[MAX_NBR_FIGURES]; // aanmaken array
	
	    	enableEvents(AWTEvent.MOUSE_EVENT_MASK); // noodzakelijk om processMouseEvent mogelijk te maken
	    }
	    
		void AddFigure(Figure figure){
			if (mNbrFigures < MAX_NBR_FIGURES){
				mFigures[mNbrFigures] = figure;
				mNbrFigures++; // + 1
			} else {
				JOptionPane.showMessageDialog(this, "Maximum number of figures ("+MAX_NBR_FIGURES+") reached!", "Error adding figures", JOptionPane.ERROR_MESSAGE);
			}
		}
		
	  	// overriding the processMouseEvent of JPanel to handle the mouse events
	  	public void processMouseEvent(MouseEvent e) 
		 { 
		 	if (e.getID() == MouseEvent.MOUSE_CLICKED)
		 	{
		 		int x = e.getX();
		 		int y = e.getY();
		 		System.out.println("Button " + e.getButton() + " clicked in panel at point (" + x + ", " + y + ")");
			    
			    for (int i = 0; i < mNbrFigures; i++)
			    {
			    	if (mFigures[i].IsPointInFigure(x,y))
			    		mFigures[i].mColor = Color.blue;
			    }
			    
			    String item = (String) mComboBox.getSelectedItem(); // cast van Object naar String  
			    String text = mTextfield.getText();
			    int size;
			    try{
			    
			    	size = Integer.parseInt(text); // omzetten van text naar integer
			    }
			     catch (NumberFormatException exception){
					JOptionPane.showMessageDialog(this, "Please give a number!", "Error with size", JOptionPane.ERROR_MESSAGE);
			     	return;
			    }
			    System.out.println("Selected Item: "+item + "Size: "+size);

			    if (item == "Vierkant"){
	   				Quadrangle q = new Quadrangle(x, y, size);
	   				AddFigure(q);
	   			} else if (item == "Rechthoek"){
	   				Rectangle r = new Rectangle(x, y, 2*size, size);
	   				AddFigure(r);
	   			} else if (item == "Circel"){
				   	Circle c = new Circle(x, y, size);	   
					AddFigure(c);
			    } else if (item == "Driehoek"){
					Triangle t = new Triangle(x, y, size);
					AddFigure(t);
				}
				
			    repaint(); // om het geheel te hertekenen
		 	}
		  }
	
	 	public void paintComponent(Graphics g) 
	 	{
	 		super.paintComponent(g); // to draw background colors etc
	 		g.clearRect(0, 0, 400, 400); // clear screen
	 		for (int i = 0; i < mNbrFigures; i++)
	 			mFigures[i].Draw(g);
	    }
	        
	 }
 }