@Override
public void contentsChanged(VirtualFileEvent event) {
if (event.isFromSave()) return;
final VirtualFile file = event.getFile();
final Document document = getCachedDocument(file);
if (document == null) {
myMultiCaster.fileWithNoDocumentChanged(file);
return;
}
if (isBinaryWithDecompiler(file)) {
myMultiCaster.fileWithNoDocumentChanged(
file); // This will generate PSI event at FileManagerImpl
}
long documentStamp = document.getModificationStamp();
long oldFileStamp = event.getOldModificationStamp();
if (documentStamp != oldFileStamp) {
LOG.info("reload from disk?");
LOG.info(" documentStamp:" + documentStamp);
LOG.info(" oldFileStamp:" + oldFileStamp);
if (file.isValid() && askReloadFromDisk(file, document)) {
reloadFromDisk(document);
}
} else {
reloadFromDisk(document);
}
}
@Override
public void saveAllDocuments() {
ApplicationManager.getApplication().assertIsDispatchThread();
myMultiCaster.beforeAllDocumentsSaving();
if (myUnsavedDocuments.isEmpty()) return;
final Map<Document, IOException> failedToSave = new HashMap<Document, IOException>();
final Set<Document> vetoed = new HashSet<Document>();
while (true) {
int count = 0;
for (Document document : myUnsavedDocuments) {
if (failedToSave.containsKey(document)) continue;
if (vetoed.contains(document)) continue;
try {
doSaveDocument(document);
} catch (IOException e) {
//noinspection ThrowableResultOfMethodCallIgnored
failedToSave.put(document, e);
} catch (SaveVetoException e) {
vetoed.add(document);
}
count++;
}
if (count == 0) break;
}
if (!failedToSave.isEmpty()) {
handleErrorsOnSave(failedToSave);
}
}
@Override
@Nullable
public Document getDocument(@NotNull final VirtualFile file) {
DocumentEx document = (DocumentEx) getCachedDocument(file);
if (document == null) {
if (file.isDirectory()
|| isBinaryWithoutDecompiler(file)
|| SingleRootFileViewProvider.isTooLargeForContentLoading(file)) {
return null;
}
final CharSequence text = LoadTextUtil.loadText(file);
synchronized (lock) {
document = (DocumentEx) getCachedDocument(file);
if (document != null) return document; // Double checking
document = (DocumentEx) createDocument(text);
document.setModificationStamp(file.getModificationStamp());
final FileType fileType = file.getFileType();
document.setReadOnly(!file.isWritable() || fileType.isBinary());
file.putUserData(DOCUMENT_KEY, new WeakReference<Document>(document));
document.putUserData(FILE_KEY, file);
if (!(file instanceof LightVirtualFile
|| file.getFileSystem() instanceof DummyFileSystem)) {
document.addDocumentListener(
new DocumentAdapter() {
@Override
public void documentChanged(DocumentEvent e) {
final Document document = e.getDocument();
myUnsavedDocuments.add(document);
final Runnable currentCommand =
CommandProcessor.getInstance().getCurrentCommand();
Project project =
currentCommand == null
? null
: CommandProcessor.getInstance().getCurrentCommandProject();
String lineSeparator = CodeStyleFacade.getInstance(project).getLineSeparator();
document.putUserData(LINE_SEPARATOR_KEY, lineSeparator);
// avoid documents piling up during batch processing
if (areTooManyDocumentsInTheQueue(myUnsavedDocuments)) {
saveAllDocumentsLater();
}
}
});
}
}
myMultiCaster.fileContentLoaded(file, document);
}
return document;
}
private boolean fireBeforeFileContentReload(final VirtualFile file, @NotNull Document document) {
for (FileDocumentSynchronizationVetoer vetoer :
Extensions.getExtensions(FileDocumentSynchronizationVetoer.EP_NAME)) {
try {
if (!vetoer.mayReloadFileContent(file, document)) {
return false;
}
} catch (Exception e) {
LOG.error(e);
}
}
myMultiCaster.beforeFileContentReload(file, document);
return true;
}
@Override
public void reloadFromDisk(@NotNull final Document document) {
ApplicationManager.getApplication().assertIsDispatchThread();
final VirtualFile file = getFile(document);
assert file != null;
if (!fireBeforeFileContentReload(file, document)) {
return;
}
final Project project = ProjectLocator.getInstance().guessProjectForFile(file);
CommandProcessor.getInstance()
.executeCommand(
project,
new Runnable() {
@Override
public void run() {
ApplicationManager.getApplication()
.runWriteAction(
new ExternalChangeAction.ExternalDocumentChange(document, project) {
@Override
public void run() {
boolean wasWritable = document.isWritable();
DocumentEx documentEx = (DocumentEx) document;
documentEx.setReadOnly(false);
LoadTextUtil.setCharsetWasDetectedFromBytes(file, null);
documentEx.replaceText(
LoadTextUtil.loadText(file), file.getModificationStamp());
documentEx.setReadOnly(!wasWritable);
}
});
}
},
UIBundle.message("file.cache.conflict.action"),
null,
UndoConfirmationPolicy.REQUEST_CONFIRMATION);
myUnsavedDocuments.remove(document);
myMultiCaster.fileContentReloaded(file, document);
}
private void doSaveDocumentInWriteAction(@NotNull Document document, @NotNull VirtualFile file)
throws IOException {
if (!file.isValid()) {
removeFromUnsaved(document);
return;
}
if (!file.equals(getFile(document))) {
registerDocument(document, file);
}
if (!isSaveNeeded(document, file)) {
if (document instanceof DocumentEx) {
((DocumentEx) document).setModificationStamp(file.getModificationStamp());
}
removeFromUnsaved(document);
updateModifiedProperty(file);
return;
}
myMultiCaster.beforeDocumentSaving(document);
LOG.assertTrue(file.isValid());
String text = document.getText();
String lineSeparator = getLineSeparator(document, file);
if (!lineSeparator.equals("\n")) {
text = StringUtil.convertLineSeparators(text, lineSeparator);
}
Project project = ProjectLocator.getInstance().guessProjectForFile(file);
LoadTextUtil.write(project, file, this, text, document.getModificationStamp());
myUnsavedDocuments.remove(document);
LOG.assertTrue(!myUnsavedDocuments.contains(document));
myTrailingSpacesStripper.clearLineModificationFlags(document);
}
private void fireUnsavedDocumentsDropped() {
myMultiCaster.unsavedDocumentsDropped();
}