protected void refreshCacheTab() {
// refresh list of cache hosts
cacheBox.removeAll();
ArrayList<JLabel> labels = new ArrayList<JLabel>();
File cache = ResourceLoader.getOSPCache();
File[] hosts = cache == null ? new File[0] : cache.listFiles(ResourceLoader.OSP_CACHE_FILTER);
clearCacheButton.setEnabled(hosts.length > 0);
if (hosts.length == 0) {
JLabel label = new JLabel(ToolsRes.getString("LibraryManager.Cache.IsEmpty")); // $NON-NLS-1$
label.setBorder(BorderFactory.createEmptyBorder(0, 2, 0, 0));
Box box = Box.createHorizontalBox();
box.add(label);
box.add(Box.createHorizontalGlue());
cacheBox.add(box);
return;
}
for (File hostFile : hosts) {
// eliminate the "osp-" that starts all cache host filenames
String hostText = hostFile.getName().substring(4).replace('_', '.');
long bytes = getFileSize(hostFile);
long size = bytes / (1024 * 1024);
if (bytes > 0) {
if (size > 0) hostText += " (" + size + " MB)"; // $NON-NLS-1$ //$NON-NLS-2$
else hostText += " (" + bytes / 1024 + " kB)"; // $NON-NLS-1$ //$NON-NLS-2$
}
JLabel label = new JLabel(hostText);
label.setToolTipText(hostFile.getAbsolutePath());
labels.add(label);
ClearHostButton button = new ClearHostButton(hostFile);
Box bar = Box.createHorizontalBox();
bar.add(label);
bar.add(button);
bar.add(Box.createHorizontalGlue());
cacheBox.add(bar);
FontSizer.setFonts(cacheBox, FontSizer.getLevel());
}
// set label sizes
FontRenderContext frc = new FontRenderContext(null, false, false);
Font font = labels.get(0).getFont();
int w = 0;
for (JLabel next : labels) {
Rectangle2D rect = font.getStringBounds(next.getText(), frc);
w = Math.max(w, (int) rect.getWidth());
}
Dimension labelSize = new Dimension(w + 48, 20);
for (JLabel next : labels) {
next.setBorder(BorderFactory.createEmptyBorder(0, 2, 0, 0));
next.setPreferredSize(labelSize);
}
}
/**
* Gets the total size of a folder.
*
* @param folder the folder
* @return the size in bytes
*/
private long getFileSize(File folder) {
if (folder == null) return 0;
long foldersize = 0;
File[] files =
folder.equals(ResourceLoader.getOSPCache())
? folder.listFiles(ResourceLoader.OSP_CACHE_FILTER)
: folder.listFiles();
if (files == null) return 0;
for (int i = 0; i < files.length; i++) {
if (files[i].isDirectory()) {
foldersize += getFileSize(files[i]);
} else {
foldersize += files[i].length();
}
}
return foldersize;
}
