svn-gvsig-desktop / branches / v2_0_0_prep / frameworks / _fwAndami / src / org / gvsig / andami / Utilities.java @ 30780
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004-2007 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.andami; |
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import java.awt.Component; |
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import java.awt.Container; |
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import java.io.BufferedInputStream; |
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import java.io.BufferedOutputStream; |
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import java.io.DataOutputStream; |
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import java.io.File; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.OutputStream; |
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import java.net.ConnectException; |
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import java.net.MalformedURLException; |
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import java.net.URL; |
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import java.net.UnknownHostException; |
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import java.util.Enumeration; |
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import java.util.Hashtable; |
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import java.util.zip.ZipEntry; |
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import java.util.zip.ZipException; |
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import java.util.zip.ZipFile; |
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import javax.swing.ImageIcon; |
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import javax.swing.RootPaneContainer; |
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import org.gvsig.andami.ui.mdiManager.IWindow; |
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import org.gvsig.andami.ui.splash.MultiSplashWindow; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/**
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* This class offers several general purpose method, to perform common
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* tasks in an easy way.
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*
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* @version $Revision: 29593 $
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*/
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public class Utilities { |
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/**
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* <b>key</b>: URL, <b>value</b>: path to the downloaded file.
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*/
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private static Hashtable downloadedFiles; |
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/** DOCUMENT ME! */
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private static Logger logger = LoggerFactory.getLogger(Utilities.class.getName()); |
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public static final String TEMPDIRECTORYPATH = System.getProperty("java.io.tmpdir")+"/tmp-andami"; |
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/**
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* Creates an icon from an image path.
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*
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* @param path Path to the image to be loaded
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*
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* @return ImageIcon if the image is found, null otherwise
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*/
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public static ImageIcon createImageIcon(String path) { |
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URL imgURL = null; |
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try {
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imgURL = new URL("file:" + path); |
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} catch (MalformedURLException e) { |
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e.printStackTrace(); |
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} |
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if (imgURL != null) { |
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return new ImageIcon(imgURL); |
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} else {
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return null; |
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} |
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} |
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/**
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* Method which frees the memory from JInternalFrames
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*
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* @param baseComponent JInternalFrame whose memory is to be
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* freed
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*/
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public static void cleanComponent(Component baseComponent) { |
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try {
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cleanComponent(baseComponent, 0);
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} catch (Exception ignore) { // give some exception handling... |
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} |
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} |
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/* * The "depth" parameter was being used for text output debugging. * But isn't essential now. I'll keep it anyways, as it avoids * calling the garbage collector every recursion. */
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protected static void cleanComponent(Component baseComponent, int depth) { |
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if (baseComponent == null) // recursion terminating clause |
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{ |
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return;
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} |
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if (baseComponent instanceof IWindow){ |
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return;
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} |
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Container cont;
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Component[] childComponents; |
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int numChildren; // clean up component containers |
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if (baseComponent instanceof Container) { // now clean up container instance variables |
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if (baseComponent instanceof RootPaneContainer) { // Swing specialised container |
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cont = (Container) baseComponent;
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numChildren = cont.getComponentCount(); |
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childComponents = cont.getComponents(); |
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for (int i = 0; i < numChildren; i++) { // remove each component from the current container |
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// each child component may be a container itself
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cleanComponent(childComponents[i], depth + 1);
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((RootPaneContainer) cont).getContentPane().remove(childComponents[i]);
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} |
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((RootPaneContainer) cont).getContentPane().setLayout(null); |
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} else { // General Swing, and AWT, Containers |
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cont = (Container) baseComponent;
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numChildren = cont.getComponentCount(); |
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childComponents = cont.getComponents(); |
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for (int i = 0; i < numChildren; i++) //for(int i = 0;i < numChildren;i++) |
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{ |
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// remove each component from the current container // each child component may be a container itself
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cleanComponent(childComponents[i], depth + 1);
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cont.remove(childComponents[i]); |
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} |
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cont.setLayout(null);
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} |
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} |
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// if component is also a container
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} |
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/**
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* Extracts a ZIP file in the provided directory
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*
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* @param file Compressed file
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* @param dir Directory to extract the files
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* @param splash The splash window to show the extraction progress
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*
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* @throws ZipException If there is some problem in the file format
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* @throws IOException If there is a problem reading the file
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*/
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public static void extractTo(File file, File dir, MultiSplashWindow splash) |
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throws ZipException, IOException { |
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ZipFile zip = new ZipFile(file); |
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Enumeration e = zip.entries();
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// Pasada para crear las carpetas
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while (e.hasMoreElements()) {
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ZipEntry entry = (ZipEntry) e.nextElement(); |
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if (entry.isDirectory()) {
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File directorio = new File(dir.getAbsolutePath() |
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+ File.separator + entry.getName());
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directorio.mkdirs(); |
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} |
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} |
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// Pasada para crear los ficheros
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e = zip.entries(); |
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while (e.hasMoreElements()) {
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ZipEntry entry = (ZipEntry) e.nextElement(); |
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splash.process(30, "Procesando " + entry.getName() + "..."); |
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if (!entry.isDirectory()) {
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InputStream in = zip.getInputStream(entry);
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OutputStream out = new FileOutputStream(dir + File.separator |
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+ entry.getName()); |
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BufferedInputStream bin = new BufferedInputStream(in); |
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BufferedOutputStream bout = new BufferedOutputStream(out); |
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int i;
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while ((i = bin.read()) != -1) { |
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bout.write(i); |
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} |
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bout.flush(); |
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bout.close(); |
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bin.close(); |
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} |
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} |
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zip.close(); |
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zip = null;
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System.gc();
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} |
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/**
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* Returns the content of this URL as a file from the file system.<br>
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* <p>
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* If the URL has been already downloaded in this session and notified
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* to the system using the static <b>Utilities.addDownloadedURL(URL)</b>
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* method, it can be restored faster from the file system avoiding to
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* download it again.
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* </p>
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* @param url
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* @return File containing this URL's content or null if no file was found.
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*/
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private static File getPreviousDownloadedURL(URL url){ |
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File f = null; |
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if (downloadedFiles!=null && downloadedFiles.containsKey(url)){ |
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String filePath = (String) downloadedFiles.get(url); |
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f = new File(filePath); |
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} |
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return f;
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} |
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/**
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* Adds an URL to the table of downloaded files for further uses. If the URL
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* already exists in the table its filePath value is updated to the new one and
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* the old file itself is removed from the file system.
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*
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* @param url
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* @param filePath
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*/
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private static void addDownloadedURL(URL url, String filePath){ |
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if (downloadedFiles==null) |
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downloadedFiles = new Hashtable(); |
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String fileName = (String) downloadedFiles.put(url, filePath); |
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//JMV: No se puede eliminar el anterior porque puede que alguien lo
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// este usando
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/*
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if (fileName!=null){
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File f = new File(fileName);
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if (f.exists())
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f.delete();
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}
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*/
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} |
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/**
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* Downloads an URL into a temporary file that is removed the next time the
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* tempFileManager class is called, which means the next time gvSIG is launched.
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*
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* @param url
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* @param name
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* @return
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* @throws IOException
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* @throws ServerErrorResponseException
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* @throws ConnectException
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* @throws UnknownHostException
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*/
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public static File downloadFile(URL url, String name) throws IOException,ConnectException, UnknownHostException{ |
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File f = null; |
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try{
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if ((f=getPreviousDownloadedURL(url))==null){ |
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File tempDirectory = new File(TEMPDIRECTORYPATH); |
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if (!tempDirectory.exists())
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tempDirectory.mkdir(); |
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f = new File(TEMPDIRECTORYPATH+"/"+name+System.currentTimeMillis()); |
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System.out.println("downloading '"+url.toString()+"' to: "+f.getAbsolutePath()); |
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f.deleteOnExit(); |
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DataOutputStream dos = new DataOutputStream( new BufferedOutputStream(new FileOutputStream(f))); |
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byte[] buffer = new byte[1024*256]; |
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InputStream is = url.openStream();
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long readed = 0; |
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for (int i = is.read(buffer); i>0; i = is.read(buffer)){ |
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dos.write(buffer, 0, i);
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readed += i; |
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} |
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dos.close(); |
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addDownloadedURL(url, f.getAbsolutePath()); |
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} |
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} catch (IOException io) { |
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io.printStackTrace(); |
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} |
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return f;
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} |
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/**
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* Cleans every temporal file previously downloaded.
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*/
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public static void cleanUpTempFiles() { |
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try{
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File tempDirectory = new File(TEMPDIRECTORYPATH); |
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File[] files = tempDirectory.listFiles(); |
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if (files!=null) { |
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for (int i = 0; i < files.length; i++) { |
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// s?lo por si en un futuro se necesitan crear directorios temporales
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if (files[i].isDirectory()) deleteDirectory(files[i]);
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files[i].delete(); |
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} |
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} |
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tempDirectory.delete(); |
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} catch (Exception e) { } |
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} |
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/**
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* Recursive directory delete.
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* @param f
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*/
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private static void deleteDirectory(File f) { |
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File[] files = f.listFiles(); |
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for (int i = 0; i < files.length; i++) { |
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if (files[i].isDirectory()) deleteDirectory(files[i]);
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files[i].delete(); |
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} |
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} |
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/**
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* Creates a temporary file with a the provided name and data. The file
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* will be automatically deleted when the application exits.
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*
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* @param fileName Name of the temporary file to create
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* @param data The data to store in the file
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*/
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public static File createTemp(String fileName, String data)throws IOException{ |
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File f = new File(fileName); |
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DataOutputStream dos = new DataOutputStream( new BufferedOutputStream(new FileOutputStream(f)) ); |
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dos.writeBytes(data); |
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dos.close(); |
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f.deleteOnExit(); |
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return f;
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} |
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/**
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* Remove an URL from the system cache. The file will remain in the file
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* system for further eventual uses.
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* @param request
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*/
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public static void removeURL(URL url) { |
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if (downloadedFiles != null && downloadedFiles.containsKey(url)) |
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downloadedFiles.remove(url); |
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} |
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/**
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* Creates the directory for temporary files, and returns the path of
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* this directory. If the directory already exists, it just returns
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* its path. Any file or directory created in this special directory
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* will be delete when the application finishes.
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*
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* @return An String containing the full path to the temporary directory
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*/
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public static String createTempDirectory(){ |
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File tempDirectory = new File(TEMPDIRECTORYPATH); |
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if (!tempDirectory.exists())
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tempDirectory.mkdir(); |
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return TEMPDIRECTORYPATH;
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} |
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} |