@NotNull
private static VirtualFilePointer[] toPointers(@NotNull List<FilePointerPartNode> pointers) {
if (pointers.isEmpty()) return VirtualFilePointer.EMPTY_ARRAY;
List<VirtualFilePointer> list =
ContainerUtil.mapNotNull(
pointers,
new Function<FilePointerPartNode, VirtualFilePointer>() {
@Override
public VirtualFilePointer fun(FilePointerPartNode pair) {
return pair.leaf;
}
});
return list.toArray(new VirtualFilePointer[list.size()]);
}
@NotNull
private static List<VFileEvent> validateEvents(@NotNull List<VFileEvent> events) {
final List<EventWrapper> deletionEvents = ContainerUtil.newArrayList();
for (int i = 0, size = events.size(); i < size; i++) {
final VFileEvent event = events.get(i);
if (event instanceof VFileDeleteEvent && event.isValid()) {
deletionEvents.add(new EventWrapper((VFileDeleteEvent) event, i));
}
}
final TIntHashSet invalidIDs;
if (deletionEvents.isEmpty()) {
invalidIDs = EmptyIntHashSet.INSTANCE;
} else {
ContainerUtil.quickSort(deletionEvents, DEPTH_COMPARATOR);
invalidIDs = new TIntHashSet(deletionEvents.size());
final Set<VirtualFile> dirsToBeDeleted = new THashSet<VirtualFile>(deletionEvents.size());
nextEvent:
for (EventWrapper wrapper : deletionEvents) {
final VirtualFile candidate = wrapper.event.getFile();
VirtualFile parent = candidate;
while (parent != null) {
if (dirsToBeDeleted.contains(parent)) {
invalidIDs.add(wrapper.id);
continue nextEvent;
}
parent = parent.getParent();
}
if (candidate.isDirectory()) {
dirsToBeDeleted.add(candidate);
}
}
}
final List<VFileEvent> filtered = new ArrayList<VFileEvent>(events.size() - invalidIDs.size());
for (int i = 0, size = events.size(); i < size; i++) {
final VFileEvent event = events.get(i);
if (event.isValid() && !(event instanceof VFileDeleteEvent && invalidIDs.contains(i))) {
filtered.add(event);
}
}
return filtered;
}
@Override
public void after(@NotNull final List<? extends VFileEvent> events) {
cleanContainerCaches();
if (myUrlsToUpdate == null) {
return;
}
for (String url : myUrlsToUpdate) {
synchronized (VirtualFilePointerManagerImpl.this) {
for (TreeMap<String, VirtualFilePointerImpl> urlToPointer : myUrlToPointerMaps.values()) {
VirtualFilePointerImpl pointer = urlToPointer.remove(url);
if (pointer != null) {
String path = VfsUtil.urlToPath(pointer.getUrl());
urlToPointer.put(path, pointer);
}
}
}
}
for (VirtualFilePointer pointer : myPointersToUpdate) {
((VirtualFilePointerImpl) pointer).update();
}
for (EventDescriptor event : myEvents) {
event.fireAfter();
}
if (!myPointersToUpdate.isEmpty()) {
VirtualFilePointer[] arr =
myPointersToUpdate.toArray(new VirtualFilePointer[myPointersToUpdate.size()]);
myBus.syncPublisher(VirtualFilePointerListener.TOPIC).validityChanged(arr);
}
myUrlsToUpdate = null;
myEvents = null;
myPointersToUpdate = null;
}
@Override
public void before(@NotNull final List<? extends VFileEvent> events) {
cleanContainerCaches();
List<VirtualFilePointer> toFireEvents = new ArrayList<VirtualFilePointer>();
List<String> toUpdateUrl = new ArrayList<String>();
synchronized (VirtualFilePointerManagerImpl.this) {
for (VFileEvent event : events) {
if (event instanceof VFileDeleteEvent) {
final VFileDeleteEvent deleteEvent = (VFileDeleteEvent) event;
String url = deleteEvent.getFile().getPath();
addPointersUnder(url, true, toFireEvents);
} else if (event instanceof VFileCreateEvent) {
final VFileCreateEvent createEvent = (VFileCreateEvent) event;
String url = createEvent.getPath();
addPointersUnder(url, false, toFireEvents);
} else if (event instanceof VFileCopyEvent) {
final VFileCopyEvent copyEvent = (VFileCopyEvent) event;
String url = copyEvent.getNewParent().getPath() + "/" + copyEvent.getFile().getName();
addPointersUnder(url, false, toFireEvents);
} else if (event instanceof VFileMoveEvent) {
final VFileMoveEvent moveEvent = (VFileMoveEvent) event;
List<VirtualFilePointer> pointers = new ArrayList<VirtualFilePointer>();
addPointersUnder(moveEvent.getFile().getPath(), false, pointers);
for (VirtualFilePointer pointer : pointers) {
VirtualFile file = pointer.getFile();
if (file != null) {
toUpdateUrl.add(file.getPath());
}
}
} else if (event instanceof VFilePropertyChangeEvent) {
final VFilePropertyChangeEvent change = (VFilePropertyChangeEvent) event;
if (VirtualFile.PROP_NAME.equals(change.getPropertyName())) {
List<VirtualFilePointer> pointers = new ArrayList<VirtualFilePointer>();
addPointersUnder(change.getFile().getPath(), false, pointers);
for (VirtualFilePointer pointer : pointers) {
VirtualFile file = pointer.getFile();
if (file != null) {
toUpdateUrl.add(file.getPath());
}
}
}
}
}
myEvents = new ArrayList<EventDescriptor>();
for (VirtualFilePointerListener listener : myUrlToPointerMaps.keySet()) {
if (listener == null) continue;
EventDescriptor event = new EventDescriptor(listener, toFireEvents);
myEvents.add(event);
}
}
for (EventDescriptor event : myEvents) {
event.fireBefore();
}
if (!toFireEvents.isEmpty()) {
VirtualFilePointer[] arr =
toFireEvents.toArray(new VirtualFilePointer[toFireEvents.size()]);
myBus.syncPublisher(VirtualFilePointerListener.TOPIC).beforeValidityChanged(arr);
}
myPointersToUpdate = toFireEvents;
myUrlsToUpdate = toUpdateUrl;
}
@Override
public void before(@NotNull final List<? extends VFileEvent> events) {
List<FilePointerPartNode> toFireEvents = new ArrayList<FilePointerPartNode>();
List<FilePointerPartNode> toUpdateUrl = new ArrayList<FilePointerPartNode>();
VirtualFilePointer[] toFirePointers;
synchronized (this) {
incModificationCount();
for (VFileEvent event : events) {
if (event instanceof VFileDeleteEvent) {
final VFileDeleteEvent deleteEvent = (VFileDeleteEvent) event;
addPointersUnder(deleteEvent.getFile(), false, "", toFireEvents);
} else if (event instanceof VFileCreateEvent) {
final VFileCreateEvent createEvent = (VFileCreateEvent) event;
addPointersUnder(createEvent.getParent(), true, createEvent.getChildName(), toFireEvents);
} else if (event instanceof VFileCopyEvent) {
final VFileCopyEvent copyEvent = (VFileCopyEvent) event;
addPointersUnder(
copyEvent.getNewParent(), true, copyEvent.getFile().getName(), toFireEvents);
} else if (event instanceof VFileMoveEvent) {
final VFileMoveEvent moveEvent = (VFileMoveEvent) event;
VirtualFile eventFile = moveEvent.getFile();
addPointersUnder(moveEvent.getNewParent(), true, eventFile.getName(), toFireEvents);
List<FilePointerPartNode> nodes = new ArrayList<FilePointerPartNode>();
addPointersUnder(eventFile, false, "", nodes);
for (FilePointerPartNode pair : nodes) {
VirtualFile file = pair.leaf.getFile();
if (file != null) {
toUpdateUrl.add(pair);
}
}
} else if (event instanceof VFilePropertyChangeEvent) {
final VFilePropertyChangeEvent change = (VFilePropertyChangeEvent) event;
if (VirtualFile.PROP_NAME.equals(change.getPropertyName())) {
VirtualFile eventFile = change.getFile();
VirtualFile parent = eventFile.getParent(); // e.g. for LightVirtualFiles
addPointersUnder(parent, true, change.getNewValue().toString(), toFireEvents);
List<FilePointerPartNode> nodes = new ArrayList<FilePointerPartNode>();
addPointersUnder(eventFile, false, "", nodes);
for (FilePointerPartNode pair : nodes) {
VirtualFile file = pair.leaf.getFile();
if (file != null) {
toUpdateUrl.add(pair);
}
}
}
}
}
myEvents = new ArrayList<EventDescriptor>();
toFirePointers = toPointers(toFireEvents);
for (final VirtualFilePointerListener listener : myPointers.keySet()) {
if (listener == null) continue;
List<VirtualFilePointer> filtered =
ContainerUtil.filter(
toFirePointers,
new Condition<VirtualFilePointer>() {
@Override
public boolean value(VirtualFilePointer pointer) {
return ((VirtualFilePointerImpl) pointer).getListener() == listener;
}
});
if (!filtered.isEmpty()) {
EventDescriptor event =
new EventDescriptor(
listener, filtered.toArray(new VirtualFilePointer[filtered.size()]));
myEvents.add(event);
}
}
}
for (EventDescriptor descriptor : myEvents) {
descriptor.fireBefore();
}
if (!toFireEvents.isEmpty()) {
myBus.syncPublisher(VirtualFilePointerListener.TOPIC).beforeValidityChanged(toFirePointers);
}
myPointersToFire = toFireEvents;
myPointersToUpdateUrl = toUpdateUrl;
}