LoanCalculator-Java/Background_Panel.java at master · alan459/LoanCalculator-Java · GitHub

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


/*****************************************************************************************************
* Represents an instance of a background on the JFrame to be the main layout container to hold items
* displayed to the user.
*****************************************************************************************************/
public class Background_Panel extends JPanel
{
	/* Pointer to the main java window to access its get() methods for other panels */
	protected JFrame outerFrame;

	/* Current Screen displayed to the user */
	private JPanel currentScreen;


	/*********************************************************************************
	* Main constructor used when creating a the background panel.
	*********************************************************************************/
	public Background_Panel(JFrame frame)
	{
		//setLayout(new GridLayout(2, 4));
		setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));

		// establish a reference to the frame to change the displayed panel
		this.outerFrame = frame;

		add(currentScreen = new Welcome_Screen(this));

	}

	/*********************************************************************************
	* Switches the current main panel to the passed in one.
	*********************************************************************************/
	protected void changeCurrentPanel(JPanel panel)
	{
		//removeAll();
		remove(currentScreen);

		add(currentScreen = panel);

		revalidate();
		repaint();

	} // end changeCurrentPanel()


} // end Background_Panel class