ProxyScanner.java

/*******************************************************************************
 * Copyright (c) 2003-2005, 2013 Till Zoppke.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Till Zoppke - initial API and implementation
 ******************************************************************************/
/*
 * Created on 24.02.2004
 */
package eniac.io;

import java.awt.event.ActionEvent;
import java.util.LinkedList;
import java.util.List;

import javax.swing.AbstractAction;

import eniac.lang.Dictionary;

/**
 * @author zoppke
 */
public class ProxyScanner extends AbstractAction {

	private String _path;

	private int _maxIndex;

	private String _text;

	private boolean _running = true;

	public ProxyScanner(String path, int maxIndex, String text) {
		super(Dictionary.CANCEL.getText());
		_path = path;
		_maxIndex = maxIndex;
		_text = text;
	}

	/**
	 * 
	 * @see java.lang.Runnable#run()
	 */
	public List<Proxy> getProxies() {

		// register cancel action at progressor
		Progressor.getInstance().setText(_text);
		Progressor.getInstance().setProgress(0, _maxIndex);
		Progressor.getInstance().setAction(this);

		// get ready to scan
		List<Proxy> v = new LinkedList<>();
		ProxyHandler handler = new ProxyHandler();
		String[] proxyFiles = IOUtil.addIndices(_path, 0, _maxIndex);

		// parse previews and collect them in a list
		for (int i = 0; i < proxyFiles.length && _running; ++i) {

			// update progressor to current search index
			Progressor.getInstance().incrementValue();

			// try to load proxy with given proxy
			Proxy proxy = IOUtil.loadProxy(proxyFiles[i], handler);
			if (proxy != null) {
				v.add(proxy);
			}

			// reset handler
			handler.reset();
		}
		// unregister cancel action and return
		Progressor.getInstance().setAction(this);
		return v;
	}

	/**
	 * @param e
	 * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
	 */
	public void actionPerformed(ActionEvent e) {
		_running = false;
	}
}