public FolderBrowser(FileSystemModel fsm) {
if (fsm == null) {
throw new NullPointerException("fsm");
}
this.fsm = fsm;
this.model = new FolderModel();
this.listbox = new ListBox<Object>(model);
this.curFolderGroup = new BoxLayout();
curFolderGroup.setTheme("currentpathbox");
curFolderGroup.setScroll(true);
curFolderGroup.setClip(true);
curFolderGroup.setAlignment(Alignment.BOTTOM);
listbox.addCallback(
new CallbackWithReason<ListBox.CallbackReason>() {
private Object lastSelection;
public void callback(ListBox.CallbackReason reason) {
if (listbox.getSelected() != ListBox.NO_SELECTION) {
if (reason.actionRequested()) {
setCurrentFolder(model.getFolder(listbox.getSelected()));
}
}
Object selection = getSelectedFolder();
if (selection != lastSelection) {
lastSelection = selection;
fireSelectionChangedCallback();
}
}
});
add(listbox);
add(curFolderGroup);
setCurrentFolder(null);
}
