//Author: ^-^Veerle^-^
import java.awt.Color;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JTextField;
import javax.swing.JPanel;
import javax.swing.ImageIcon;
import javax.swing.JTabbedPane;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.BorderFactory;
import javax.swing.JOptionPane;

public class calc2GUI extends JPanel implements ActionListener
{
	
	private final Color clrMainBackground = new Color(75,141,221); //Light blue
	private final Color clrPadBackground = new Color(0,0,0); //Black
	private final int width = 420, height = 260;
	
	private calc2Int calcObject;
	
	private JButton[] cmdOperations, cmdMemory;
	private JButton cmdRestart;
	private JTextField txtAnswer;
	private JPanel panRoot, panNorthArea, panAnswerArea, panInputArea;
	private calcNumPad panNumPad;
	private calcOppPad panOperationPad;
	private calcMemoryPad panMemoryPad;
	private calculatorPanCurrency panCurrencyPad;
	private calcMenu menuSystem;
			
	public calc2GUI ()
	{
		
		this.setLayout(new BorderLayout());
		
		menuSystem = new calcMenu(this, new Color(0,0,64), new Color(255,255,255));
		this.setPreferredSize(new Dimension(width, height));
		
		calcObject = new calc2Int();
			
		panRoot = new JPanel(new BorderLayout()); //panRoot is used so I can add some padding to the root container
		panNorthArea = new JPanel(new BorderLayout());
		panAnswerArea = new JPanel(new BorderLayout());
		panInputArea = new JPanel(new BorderLayout());
		panNumPad = new calcNumPad(this);
		panMemoryPad = new calcMemoryPad(this);
		panOperationPad = new calcOppPad(this);
		panCurrencyPad = new calculatorPanCurrency(this);
		JTabbedPane tabPane = new JTabbedPane();
		tabPane.setPreferredSize(new Dimension(210, 170));

		txtAnswer = new JTextField("0.", 15);
		txtAnswer.setEditable(false);
		
		cmdRestart = new JButton("Restart");
		cmdRestart.addActionListener(this);
		cmdRestart.setActionCommand("Restart"); //Changing the language changes the caption, but won't change this
		
		panAnswerArea.add(txtAnswer, BorderLayout.WEST);
		panAnswerArea.add(cmdRestart, BorderLayout.EAST);
		
		try //Tries to get the images for the square root/power buttons
		{
			
			ImageIcon[] imgIcon = new ImageIcon[2];
			String[] strKeys = {"Sq","v"};
			
			for (int i = 0; i < imgIcon.length; i++)
			{
				imgIcon[i] = dataManager.createImageIcon(this, "images/" + strKeys[i] + ".gif", strKeys[i]);
			}
			
			panOperationPad.setupImages(imgIcon, strKeys);			
			
		}
		catch (Exception ex) //It doesn't matter to much if they can not be found
		{
			JOptionPane.showMessageDialog(null, ex.getMessage(), "Error when loading images", JOptionPane.WARNING_MESSAGE);			
		}
		
		this.add(panRoot, BorderLayout.CENTER);
			panRoot.add(panNorthArea, BorderLayout.NORTH);
				panNorthArea.add(panMemoryPad, BorderLayout.NORTH);
				panNorthArea.add(panAnswerArea, BorderLayout.SOUTH);
			panRoot.add(panInputArea, BorderLayout.SOUTH);
				panInputArea.add(panNumPad, BorderLayout.WEST);
				panInputArea.add(tabPane, BorderLayout.EAST);
					tabPane.add("Calculator", panOperationPad);
					tabPane.add("Currency", panCurrencyPad);
		
		this.setBackground(clrMainBackground);
		panRoot.setBackground(clrMainBackground);
		panNorthArea.setBackground(clrMainBackground);
		panAnswerArea.setBackground(clrMainBackground);
		panMemoryPad.setBackground(clrMainBackground);
		panInputArea.setBackground(clrMainBackground);

		txtAnswer.setBackground(new Color(133,133,133));
		
		panNumPad.setBackground(clrPadBackground);	
		panOperationPad.setBackground(clrPadBackground);		
		
		panRoot.setBorder(BorderFactory.createEmptyBorder(4,4,4,4));
		panNumPad.setBorder(BorderFactory.createEmptyBorder(4,4,4,4));
		panOperationPad.setBorder(BorderFactory.createEmptyBorder(4,4,4,4));
		panAnswerArea.setBorder(BorderFactory.createEmptyBorder(4,4,4,4));
		
		setLanguage("English");
		
	}
	
	public Container getGUI ()
    {
	    return this;
    }

    public JMenuBar getMenu ()
    {		
		return menuSystem;		
	}
	
	private void setLanguage (String strLanguage)
	{
		
		if (strLanguage.equalsIgnoreCase("Dutch"))
		{
			
			cmdRestart.setToolTipText("start een nieuwe berekening");			
			cmdRestart.setText("Restart");
		
		}
		else if (strLanguage.equalsIgnoreCase("Spanish"))
		{
			
			cmdRestart.setToolTipText("Comience un nuevo calculo");			
			cmdRestart.setText("Reiniciar");
			
		}
		else //English or not reconised, set as English
		{
			
			cmdRestart.setToolTipText("Start a new calculation");			
			cmdRestart.setText("Restart");
			
		}
		
		panNumPad.setLanguage(strLanguage);
		panMemoryPad.setLanguage(strLanguage);
		panOperationPad.setLanguage(strLanguage);
		panCurrencyPad.setLanguage(strLanguage);
		menuSystem.setLanguage(strLanguage);
		
	}
	
	public void actionPerformed (ActionEvent e)
	{
		
		String strAction = e.getActionCommand();
		
		if (e.getSource() instanceof JMenuItem) //If a menu item was clicked
		{
			setLanguage(strAction);
		}
		else if (e.getActionCommand().equalsIgnoreCase("Currency"))
		{
			
			try
			{
				
				float amount = Float.parseFloat(txtAnswer.getText());
				
				if (amount != 0)
				{
					calcObject.setCurrentNum(panCurrencyPad.performConversion(amount));
				}
				
			}
			catch (NumberFormatException ex)
			{
			}

			txtAnswer.setText(calcObject.getDisplayString());
			
		}
		else
		{
			
			calcObject.handleButton(strAction);
			txtAnswer.setText(calcObject.getDisplayString());
			
		}
		
	}
	
}