/**
* Removes a root from the cache.
*
* @param root path to be removed
*/
static synchronized void removeRoot(String root) {
RootCache cache = RootCache.getInstance();
if (cache.isRoot(root)) {
cache.removeRoot(root);
notifyListeners(FileSystemListener.ROOT_REMOVED, root);
}
}
/**
* Adds a root to the cache.
*
* @param root path to add to roots
*/
static synchronized void addRoot(String root) {
RootCache cache = RootCache.getInstance();
if (!cache.isRoot(root)) {
cache.addRoot(root);
notifyListeners(FileSystemListener.ROOT_ADDED, root);
}
}
// JAVADOC COMMENT ELIDED
public static boolean addFileSystemListener(FileSystemListener listener) {
if (listener == null) {
throw new NullPointerException();
}
checkReadPermission();
// Create and register file system events listener in MIDP event system
// (if there is no registered yet)
if (!isListenerRegistered) {
// Create root cache object and fill it's internal cache with
// currently mounted roots.
// Cache is used to determine which roots were mounted/unmounted
// if EventTypes.FC_DISKS_CHANGED_EVENT event arrives.
RootCache.initialize();
FileSystemEventHandler.setListener(new FileSystemEventHandler());
isListenerRegistered = true;
}
fileSystemListeners.addElement(listener);
return true;
}