private VirtualFileSystemEntry applyEvent(@NotNull VFileEvent event) {
try {
if (event instanceof VFileCreateEvent) {
final VFileCreateEvent createEvent = (VFileCreateEvent) event;
return executeCreateChild(createEvent.getParent(), createEvent.getChildName());
} else if (event instanceof VFileDeleteEvent) {
final VFileDeleteEvent deleteEvent = (VFileDeleteEvent) event;
executeDelete(deleteEvent.getFile());
} else if (event instanceof VFileContentChangeEvent) {
final VFileContentChangeEvent contentUpdateEvent = (VFileContentChangeEvent) event;
executeTouch(
contentUpdateEvent.getFile(),
contentUpdateEvent.isFromRefresh(),
contentUpdateEvent.getModificationStamp());
} else if (event instanceof VFileCopyEvent) {
final VFileCopyEvent copyEvent = (VFileCopyEvent) event;
return executeCreateChild(copyEvent.getNewParent(), copyEvent.getNewChildName());
} else if (event instanceof VFileMoveEvent) {
final VFileMoveEvent moveEvent = (VFileMoveEvent) event;
executeMove(moveEvent.getFile(), moveEvent.getNewParent());
} else if (event instanceof VFilePropertyChangeEvent) {
final VFilePropertyChangeEvent propertyChangeEvent = (VFilePropertyChangeEvent) event;
if (VirtualFile.PROP_NAME.equals(propertyChangeEvent.getPropertyName())) {
executeRename(propertyChangeEvent.getFile(), (String) propertyChangeEvent.getNewValue());
} else if (VirtualFile.PROP_WRITABLE.equals(propertyChangeEvent.getPropertyName())) {
executeSetWritable(
propertyChangeEvent.getFile(),
((Boolean) propertyChangeEvent.getNewValue()).booleanValue());
} else if (VirtualFile.PROP_HIDDEN.equals(propertyChangeEvent.getPropertyName())) {
executeSetHidden(
propertyChangeEvent.getFile(),
((Boolean) propertyChangeEvent.getNewValue()).booleanValue());
} else if (VirtualFile.PROP_SYMLINK_TARGET.equals(propertyChangeEvent.getPropertyName())) {
executeSetTarget(
propertyChangeEvent.getFile(), (String) propertyChangeEvent.getNewValue());
}
}
} catch (Exception e) {
// Exception applying single event should not prevent other events from applying.
LOG.error(e);
}
return null;
}
@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;
}