SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// Multi-Phasic Applications: SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package cc.squirreljme.debugger;

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.util.Objects;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

/**
 * Shown context frame.
 *
 * @since 2024/01/25
 */
public class ShownContextFrame
    extends JPanel
    implements ContextThreadFrameListener
{
    /** The current context. */
    protected final ContextThreadFrame context;
    
    /** The current frame. */
    protected final InfoFrame frame;
    
    /** The current button text. */
    protected final JButton text;
    
    /** The active pointer button. */
    protected final JButton pointer;
    
    /**
     * Initializes the context frame.
     *
     * @param __frame The current frame.
     * @param __context The context of the frame.
     * @throws NullPointerException On null arguments.
     * @since 2024/01/25
     */
    public ShownContextFrame(InfoFrame __frame, ContextThreadFrame __context)
        throws NullPointerException
    {
        if (__frame == null || __context == null)
            throw new NullPointerException("NARG");
        
        // Store for later
        this.frame = __frame;
        this.context = __context;
        
        // Use basic flow layout
        FlowLayout layout = new FlowLayout(FlowLayout.LEADING);
        layout.setHgap(0);
        layout.setVgap(0);
        this.setLayout(layout);
        
        // Add current frame pointer button
        JButton pointer = new JButton();
        this.pointer = pointer;
        Utils.prettyTextButton(pointer);
        pointer.setIcon(Utils.tangoIcon("-"));
        this.add(pointer);
        
        // Setup a nice text button
        JButton text = new JButton(__frame.toString());
        this.text = text;
        Utils.prettyTextButton(text);
        this.add(text);
        
        // Set context when clicked
        text.addActionListener(this::__changeContext);
        
        // Called when context updates
        __context.addListener(this);
        
        // Request that everything gets updated
        Utils.swingInvoke(this::update);
    }
    
    /**
     * {@inheritDoc}
     * @since 2024/01/25
     */
    @Override
    public void contextChanged(InfoThread __oldThread, InfoFrame __oldFrame,
        FrameLocation __oldLocation, InfoThread __newThread,
        InfoFrame __newFrame, FrameLocation __newLocation)
    {
        // Update
        this.update();
    }
    
    /**
     * Updates the context.
     *
     * @since 2024/01/26
     */
    public void update()
    {
        // Is this selected?
        JButton pointer = this.pointer;
        InfoFrame inFrame = this.context.getFrame();
        if (Objects.equals(this.frame, inFrame))
            pointer.setIcon(Utils.tangoIcon("go-next"));
        else
            pointer.setIcon(Utils.tangoIcon("-"));
        
        // Repaint
        Utils.revalidate(this);
    }
    
    /**
     * Changes the current context.
     *
     * @param __event Ignored.
     * @since 2024/01/25
     */
    private void __changeContext(ActionEvent __event)
    {
        // Set new context
        this.context.set(this.frame);
    }
}