/**
* @param primaryFileFilter this optional filter is immutable and supersedes any possible
* SearchConstraints.
* @param constraints this optional set of constraints is used to fine-tune what the primary
* FileFilter accepts.
*/
public FileList(FileFilter primaryFileFilter, SearchConstraints<File> constraints) {
this.fileFilter = primaryFileFilter == null ? ACCEPT_ALL_FILTER : primaryFileFilter;
setSearchConstraints(constraints);
constrainedList.addListDataListener(
new ListDataListener() {
@Override
public void intervalAdded(ListDataEvent e) {
contentsChanged(e);
}
@Override
public void intervalRemoved(ListDataEvent e) {
contentsChanged(e);
}
@Override
public void contentsChanged(ListDataEvent e) {
SwingUtilities.invokeLater(updateContentsRunnable);
}
});
setLayout(new GridBagLayout());
}
public synchronized boolean setSearchConstraints(SearchConstraints<File> constraints) {
if (this.searchConstraints == null && constraints == null) return false;
if (this.searchConstraints != null
&& constraints != null
&& this.searchConstraints.equals(constraints)) return false;
this.searchConstraints = constraints;
constrainedList.refresh(false);
return true;
}
protected synchronized void updateFileListComponents() {
throbber.setVisible(!finishedSearch);
removeAll();
GridBagConstraints c = new GridBagConstraints();
c.gridx = getColumnCount() - 1;
c.gridy = 0;
c.weightx = 0;
c.weighty = 0;
c.insets = new Insets(5, 5, 5, 5);
c.anchor = GridBagConstraints.EAST;
add(throbber, c);
c.gridx = 0;
c.weightx = 1;
c.anchor = GridBagConstraints.WEST;
c.fill = GridBagConstraints.BOTH;
if (constrainedList.getSize() == 0) {
if (finishedSearch) {
add(emptyLabel, c);
} else {
add(searchingLabel, c);
}
}
for (int a = 0; a < constrainedList.getSize(); a++) {
File file = constrainedList.getElementAt(a);
JComponent jc = componentCache.get(file);
if (jc == null) {
jc = createComponent(file);
jc.putClientProperty(KEY_FILE, file);
componentCache.put(file, jc);
}
add(jc, c);
c.gridx = (c.gridx + 1) % getColumnCount();
if (c.gridx == 0) c.gridy++;
}
c.gridy++;
c.weighty = 1;
add(fluff, c);
revalidate();
repaint();
}
/**
* Remove a ListDataListener.
*
* @param listListener
* @see #addListDataListener(ListDataListener)
*/
public void removeListDataListener(ListDataListener listListener) {
constrainedList.removeListDataListener(listListener);
}
/**
* Add a ListDataListener to be notified when the visible files change.
*
* @param listListener
* @see #removeListDataListener(ListDataListener)
*/
public void addListDataListener(ListDataListener listListener) {
constrainedList.addListDataListener(listListener);
}