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Progress bar for downloading/installing library.

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This commit is contained in:
pesckal
2011-06-21 05:14:42 +00:00
parent 44aca364eb
commit 80938d2e02
1 changed files with 152 additions and 38 deletions
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app/src/processing/app/LibraryManager.java
+152 -38
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@@ -27,19 +27,73 @@ import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.*;
import java.util.zip.*;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.event.*;
class ProgressMonitor {
JProgressBar progressBar;
boolean isCancelled = false;
public ProgressMonitor(JProgressBar progressBar) {
this.progressBar = progressBar;
}
public boolean isCanceled() {
return isCancelled;
}
public void cancel() {
isCancelled = true;
}
}
/**
*
*/
public class LibraryManager {
class LibraryDownloader implements Runnable {
URL url;
ProgressMonitor progressMonitor;
File libFile;
public LibraryDownloader(URL url, ProgressMonitor progressMonitor) {
this.url = url;
this.progressMonitor = progressMonitor;
libFile = null;
}
public void run() {
libraryUrl.setEnabled(false);
installButton.setEnabled(false);
progressMonitor.progressBar.setIndeterminate(false);
progressMonitor.progressBar.setString("Downloading");
libFile = downloadLibrary(url, progressMonitor);
if (libFile != null) {
progressMonitor.progressBar.setString("Installing");
progressMonitor.progressBar.setIndeterminate(true);
installLibrary(libFile);
}
libraryUrl.setEnabled(true);
installButton.setEnabled(true);
installProgressBar.setVisible(false);
dialog.pack();
}
public File getFile() {
return libFile;
}
}
/**
* true to use manual URL specification only
* false to use searchable library list
@@ -51,10 +105,12 @@ public class LibraryManager {
// Simple UI widgets:
JLabel urlLabel;
JTextField libraryUri;
JTextField libraryUrl;
JButton installButton;
JProgressBar installProgressBar;
// Non-simple UI widgets:
FilterField filterField;
@@ -62,7 +118,6 @@ public class LibraryManager {
JComboBox categoryChooser;
// the calling editor, so updates can be applied
Editor editor;
@@ -125,27 +180,74 @@ public class LibraryManager {
GridBagConstraints c;
if (USE_SIMPLE) {
dialog.setResizable(false);
urlLabel = new JLabel("Library URL:");
libraryUri = new JTextField();
libraryUrl = new JTextField();
installButton = new JButton("Install");
installProgressBar = new JProgressBar();
// Dimension d = installProgressBar.getSize();
// d.height = 2 * pane.getFontMetrics(installProgressBar.getFont()).getHeight();
// installProgressBar.setPreferredSize(d);
installProgressBar.setVisible(false);
installProgressBar.setString("");
installProgressBar.setStringPainted(true);
installButton.setEnabled(false);
libraryUrl.getDocument().addDocumentListener(new DocumentListener() {
private void checkUrl() {
try {
new URL(libraryUrl.getText());
installButton.setEnabled(true);
installButton.setToolTipText("");
} catch (MalformedURLException e) {
installButton.setEnabled(false);
installButton.setToolTipText("URL is malformed");
}
}
public void removeUpdate(DocumentEvent de) {
checkUrl();
}
public void insertUpdate(DocumentEvent de) {
checkUrl();
}
public void changedUpdate(DocumentEvent de) {
checkUrl();
}
});
ActionListener installLibAction = new ActionListener() {
public void actionPerformed(ActionEvent arg) {
try {
URL url = new URL(libraryUri.getText());
// System.out.println("Installing library: " + url);
File libFile = downloadLibrary(url);
if (libFile != null) {
installLibrary(libFile);
}
installProgressBar.setVisible(true);
dialog.pack();
URL url = new URL(libraryUrl.getText());
final ProgressMonitor pm = new ProgressMonitor(installProgressBar);
dialog.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
pm.cancel();
}
});
LibraryDownloader downloader = new LibraryDownloader(url, pm);
new Thread(downloader).start();
} catch (MalformedURLException e) {
System.err.println("Malformed URL");
}
libraryUri.setText("");
libraryUrl.setText("");
}
};
libraryUri.addActionListener(installLibAction);
libraryUrl.addActionListener(installLibAction);
installButton.addActionListener(installLibAction);
c = new GridBagConstraints();
@@ -160,7 +262,7 @@ public class LibraryManager {
c.gridy = 1;
c.weightx = 1;
c.fill = GridBagConstraints.HORIZONTAL;
pane.add(libraryUri, c);
pane.add(libraryUrl, c);
c = new GridBagConstraints();
c.gridx = 1;
@@ -168,6 +270,14 @@ public class LibraryManager {
c.anchor = GridBagConstraints.EAST;
pane.add(installButton, c);
c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 2;
c.weightx = 1;
c.fill = GridBagConstraints.HORIZONTAL;
pane.add(installProgressBar, c);
Dimension d = dialog.getSize();
d.width = 320;
dialog.setMinimumSize(d);
@@ -249,13 +359,15 @@ public class LibraryManager {
if (paths.length != 0) {
String fileName = paths[paths.length - 1];
int lastDot = fileName.lastIndexOf(".");
return fileName.substring(0, lastDot);
if (lastDot != -1) {
return fileName.substring(0, lastDot);
}
}
return null;
}
protected File downloadLibrary(URL url) {
protected File downloadLibrary(URL url, ProgressMonitor progressMonitor) {
try {
String libName = guessLibraryName(url.getFile());
if (libName != null) {
@@ -263,9 +375,14 @@ public class LibraryManager {
File libFile = new File(tmpFolder, libName + ".plb");
libFile.setWritable(true);
if (downloadFile(url, libFile)) {
return libFile;
try {
if (downloadFile(url, libFile, progressMonitor)) {
return libFile;
}
} catch (IOException e) {
Base.showError("Trouble downloading file",
"An error occured while downloading the library.", e);
}
}
} catch (IOException e) {
@@ -329,12 +446,13 @@ public class LibraryManager {
/**
* Returns true if the file was successfully downloaded, false otherwise
* @param progressMonitor
* @throws FileNotFoundException
*/
protected boolean downloadFile(URL source, File dest) {
try {
protected boolean downloadFile(URL source, File dest, ProgressMonitor progressMonitor) throws IOException, FileNotFoundException {
URLConnection urlConn = source.openConnection();
urlConn.setConnectTimeout(1000);
urlConn.setReadTimeout(1000);
urlConn.setReadTimeout(5000);
// String expectedType1 = "application/x-zip-compressed";
// String expectedType2 = "application/zip";
@@ -343,29 +461,25 @@ public class LibraryManager {
// }
int fileSize = urlConn.getContentLength();
progressMonitor.progressBar.setMaximum(fileSize);
InputStream in = urlConn.getInputStream();
FileOutputStream out = new FileOutputStream(dest);
byte[] b = new byte[256];
int bytesDownloaded = 0, len;
while ((len = in.read(b)) != -1) {
@SuppressWarnings("unused")
int progress = (int) (100.0 * bytesDownloaded / fileSize);
// System.out.println("Downloaded " + progress + "%");
while (!progressMonitor.isCanceled() && (len = in.read(b)) != -1) {
out.write(b, 0, len);
bytesDownloaded += len;
progressMonitor.progressBar.setValue(bytesDownloaded);
}
out.close();
// System.out.println("Done!");
return true;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
if (!progressMonitor.isCanceled()) {
return true;
}
return false;
}