public Icon getFileIcon(AbstractFile originalFile, Dimension preferredResolution) {
// Specified file is a LocalFile or a ProxyFile proxying a LocalFile (e.g. an archive file):
// let's simply get
// the icon using #getLocalFileIcon(LocalFile)
AbstractFile topFile = originalFile.getTopAncestor();
Icon icon;
if (topFile instanceof LocalFile) {
icon = getLocalFileIcon((LocalFile) topFile, originalFile, preferredResolution);
}
// File is a remote file: create a temporary local file (or directory) with the same extension
// to grab the icon
// and then delete the file. This operation is I/O bound and thus expensive, so an LRU is used
// to cache
// frequently-accessed file extensions.
else {
// create the temporary, local file
LocalFile tempFile = createTempLocalFile(topFile);
if (tempFile == null) {
// No temp file, no icon!
return null;
}
// Get the file icon
icon = getLocalFileIcon(tempFile, originalFile, preferredResolution);
// Delete the temporary file
try {
tempFile.delete();
} catch (IOException e) {
// Not much to do
}
}
return icon;
}
