JRComboBox.java

package org.rr.commons.swing.components;

import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;

import javax.swing.JComboBox;

public class JRComboBox<E> extends JComboBox<E> {

	private String type;
	private boolean layingOut = false;
	private int widestLengh = 0;
	private boolean wide = false;

	public JRComboBox(E[] objs) {
		super(objs);
	}

	public JRComboBox() {
		super();
	}

	public boolean isWide() {
		return wide;
	}

	// Setting the JComboBox wide
	public void setWide(boolean wide) {
		this.wide = wide;
		this.widestLengh = getWidestItemWidth();

	}

	public Dimension getSize() {
		Dimension dim = super.getSize();
		if (!layingOut && isWide())
			dim.width = Math.max(widestLengh, dim.width);
		return dim;
	}

	public int getWidestItemWidth() {
		int numOfItems = this.getItemCount();
		Font font = this.getFont();
		FontMetrics metrics = this.getFontMetrics(font);
		int widest = 0;
		for (int i = 0; i < numOfItems; i++) {
			Object item = this.getItemAt(i);
			int lineWidth = metrics.stringWidth(item.toString());
			widest = Math.max(widest, lineWidth);
		}

		return widest + 10;
	}

	public void doLayout() {
		try {
			layingOut = true;
			super.doLayout();
		} finally {
			layingOut = false;
		}
	}

	public String getType() {
		return type;
	}

	public void setType(String t) {
		type = t;
	}

}