java-util-graphics/src/main/lombok/org/leumasjaffe/graphics/MultiScrollable.java

package org.leumasjaffe.graphics;

import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

import javax.swing.JPanel;
import javax.swing.JScrollPane;

@SuppressWarnings("serial")
public class MultiScrollable extends JPanel {
	public MultiScrollable(Component...components) {
		GridBagLayout layout = new GridBagLayout();
		layout.columnWidths = new int[]{0, 0};
		layout.rowHeights = prepareInts(components.length);
		layout.columnWeights = new double[]{1.0, Double.MIN_VALUE};
		layout.rowWeights = prepareDoubles(components.length);
		setLayout(layout);
		for (int i = 0; i < components.length; ++i) {
			GridBagConstraints gbc_panel = new GridBagConstraints();
			gbc_panel.fill = GridBagConstraints.BOTH;
			gbc_panel.gridx = 0;
			gbc_panel.gridy = i;
			add(new JScrollPane(components[i]), gbc_panel);
		}
	}

	private double[] prepareDoubles(int length) {
		double[] dbls = new double[length+1];
		for (int i = 0; i < length; ++i) {
			dbls[i] = 1.0;
		}
		dbls[length] = Double.MIN_VALUE;
		return dbls;
	}

	private int[] prepareInts(int length) {
		int[] ints = new int[length+1];
		for (int i = 0; i < length+1; ++i) {
			ints[i] = 0;
		}
		return ints;
	}
}