/*
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 * and open the template in the editor.
 */
package org.autoplot.ascii;

import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;

/**
 * This allows colspan in a JTable.
 * @author jbf
 */
public class ColSpanTableCellRenderer extends DefaultTableCellRenderer {

    private int tableWidth;
    private int x;
    private boolean isColSpan;
    Color unselectedBackground;
    Color unselectedForeground;

    public interface ColSpanTableModel {

        boolean isColSpan(int row, int col);
    }

    public ColSpanTableCellRenderer() {
    }

    @Override
    public void setBounds(int x, int y, int width, int height) {
        if (!isColSpan) {
            this.x = 0;
            super.setBounds(x, y, width, height);
        } else {
            this.x = x;
            super.setBounds(0, y, tableWidth, height);
        }
    }

    @Override
    public void paint(Graphics g) {
        g.translate(-x, 0);
        super.paint(g);
    }

    @Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        this.tableWidth = table.getWidth();
        this.isColSpan = ((ColSpanTableModel) table.getModel()).isColSpan(row, column);
        Component ts = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
        //if (isColSpan) {
        //    ts.setBackground(Color.GRAY);
        //}


        if (isSelected) {
            super.setForeground( table.getSelectionForeground() );
            super.setBackground( table.getSelectionBackground() );
        } else if ( isColSpan ) {
            super.setForeground( table.getForeground());
            super.setBackground( table.getBackground().darker());
        } else {
            super.setForeground( table.getForeground());
            super.setBackground( table.getBackground());
        }
        return ts;
    }
}