verticalalignpanel.java

真正的网络爬虫的源代码啊,希望大家好好阅读,写出心得体会啊

package net.matuschek.swing;

import java.awt.*;
import javax.swing.*;
/*********************************************
    Copyright (c) 2001 by Daniel Matuschek
 *********************************************/


/**
 * This is a JPanel object that allows "stacking" of components without
 * explicit use of the GridBagLayout. Simply create that panel and add
 * components to it.
 * 
 * @author Daniel Matuschek
 * @version $Revision: 1.4 $
 */
public class VerticalAlignPanel extends JPanel {

	private static final long serialVersionUID = -5964950356897442955L;

	private int count=0;
	private int inset=2;

	/**
	 * Initializes a new VerticalAlignPanel object.
	 */
	public VerticalAlignPanel() {
		super();
		setLayout(new GridBagLayout());
	}

	/**
	 * Initializes a new VerticalAlignPanel object and sets the inset value.
	 * The inset is used to have some space around the components
	 */
	public VerticalAlignPanel(int inset) {
		this();
		this.inset = inset;
	}

	/**
	 * adds a new line to the VerticalAlignPanel
	 * with the given Component
	 * @param comp a JComponent object that should be added in the next line
	 * @param fill can be java.awt.GridBagConstraints. 
	 * NONE|HORIZONTAL|VERTICAL|BOTH and describes if the component should
	 * fill the place at the right side or keep its defaults size
	 */
	public void add(JComponent comp, int fill) {
		GridBagConstraints consRight  = new GridBagConstraints();
		consRight.gridx = 0;
		consRight.gridy = count;
		consRight.insets = new Insets(inset,inset,inset,inset);
		consRight.fill = fill;
		consRight.anchor = GridBagConstraints.CENTER;

		this.add(comp, consRight);

		count++;
	}

	/**
	 * adds a new line to the VerticalAlignPanel
	 * with the given Component
	 * @param comp a JComponent object that should be added in the next line
	 * @see #add(JComponent, int) (fill will be set to NONE)
	 */
	public void add(JComponent comp) {
		add(comp,GridBagConstraints.NONE);
	}


} // VerticalAlignPanel