public void run0() {
FileSystemView fileSystem = filechooser.getFileSystemView();
if (loadThread.isInterrupted()) {
return;
}
File[] list = fileSystem.getFiles(currentDirectory, filechooser.isFileHidingEnabled());
if (loadThread.isInterrupted()) {
return;
}
final Vector<File> newFileCache = new Vector<File>();
Vector<File> newFiles = new Vector<File>();
// run through the file list, add directories and selectable files to fileCache
// Note that this block must be OUTSIDE of Invoker thread because of
// deadlock possibility with custom synchronized FileSystemView
for (File file : list) {
if (filechooser.accept(file)) {
boolean isTraversable = filechooser.isTraversable(file);
if (isTraversable) {
newFileCache.addElement(file);
} else if (filechooser.isFileSelectionEnabled()) {
newFiles.addElement(file);
}
if (loadThread.isInterrupted()) {
return;
}
}
}
// First sort alphabetically by filename
sort(newFileCache);
sort(newFiles);
newFileCache.addAll(newFiles);
// To avoid loads of synchronizations with Invoker and improve performance we
// execute the whole block on the COM thread
DoChangeContents doChangeContents =
ShellFolder.invoke(
new Callable<DoChangeContents>() {
public DoChangeContents call() {
int newSize = newFileCache.size();
int oldSize = fileCache.size();
if (newSize > oldSize) {
// see if interval is added
int start = oldSize;
int end = newSize;
for (int i = 0; i < oldSize; i++) {
if (!newFileCache.get(i).equals(fileCache.get(i))) {
start = i;
for (int j = i; j < newSize; j++) {
if (newFileCache.get(j).equals(fileCache.get(i))) {
end = j;
break;
}
}
break;
}
}
if (start >= 0
&& end > start
&& newFileCache
.subList(end, newSize)
.equals(fileCache.subList(start, oldSize))) {
if (loadThread.isInterrupted()) {
return null;
}
return new DoChangeContents(
newFileCache.subList(start, end), start, null, 0, fid);
}
} else if (newSize < oldSize) {
// see if interval is removed
int start = -1;
int end = -1;
for (int i = 0; i < newSize; i++) {
if (!newFileCache.get(i).equals(fileCache.get(i))) {
start = i;
end = i + oldSize - newSize;
break;
}
}
if (start >= 0
&& end > start
&& fileCache
.subList(end, oldSize)
.equals(newFileCache.subList(start, newSize))) {
if (loadThread.isInterrupted()) {
return null;
}
return new DoChangeContents(
null, 0, new Vector<>(fileCache.subList(start, end)), start, fid);
}
}
if (!fileCache.equals(newFileCache)) {
if (loadThread.isInterrupted()) {
cancelRunnables(runnables);
}
return new DoChangeContents(newFileCache, 0, fileCache, 0, fid);
}
return null;
}
});
if (doChangeContents != null) {
runnables.addElement(doChangeContents);
SwingUtilities.invokeLater(doChangeContents);
}
}
