@Override
public void beforeCompletion(@NotNull final CompletionInitializationContext context) {
final PsiFile file = context.getFile();
if (file instanceof PsiJavaFile) {
JavaCompletionUtil.initOffsets(file, context.getOffsetMap());
autoImport(file, context.getStartOffset() - 1, context.getEditor());
if (context.getCompletionType() == CompletionType.BASIC) {
if (semicolonNeeded(context.getEditor(), file, context.getStartOffset())) {
context.setDummyIdentifier(CompletionInitializationContext.DUMMY_IDENTIFIER.trim() + ";");
return;
}
final PsiJavaCodeReferenceElement ref =
PsiTreeUtil.findElementOfClassAtOffset(
file, context.getStartOffset(), PsiJavaCodeReferenceElement.class, false);
if (ref != null && !(ref instanceof PsiReferenceExpression)) {
if (ref.getParent() instanceof PsiTypeElement) {
context.setDummyIdentifier(
CompletionInitializationContext.DUMMY_IDENTIFIER.trim() + ";");
}
if (JavaSmartCompletionContributor.AFTER_NEW.accepts(ref)) {
final PsiReferenceParameterList paramList = ref.getParameterList();
if (paramList != null && paramList.getTextLength() > 0) {
context
.getOffsetMap()
.addOffset(
ConstructorInsertHandler.PARAM_LIST_START,
paramList.getTextRange().getStartOffset());
context
.getOffsetMap()
.addOffset(
ConstructorInsertHandler.PARAM_LIST_END,
paramList.getTextRange().getEndOffset());
}
}
return;
}
final PsiElement element = file.findElementAt(context.getStartOffset());
if (psiElement().inside(PsiAnnotation.class).accepts(element)) {
return;
}
context.setDummyIdentifier(CompletionInitializationContext.DUMMY_IDENTIFIER_TRIMMED);
}
}
}
private void insertDummyIdentifier(
final CompletionInitializationContext initContext,
final boolean hasModifiers,
final int invocationCount) {
final PsiFile originalFile = initContext.getFile();
InjectedLanguageManager manager =
InjectedLanguageManager.getInstance(originalFile.getProject());
final PsiFile hostFile = manager.getTopLevelFile(originalFile);
final Editor hostEditor = InjectedLanguageUtil.getTopLevelEditor(initContext.getEditor());
final OffsetMap hostMap =
translateOffsetMapToHost(initContext, originalFile, hostFile, hostEditor);
final PsiFile[] hostCopy = {null};
DocumentUtil.writeInRunUndoTransparentAction(
new Runnable() {
@Override
public void run() {
hostCopy[0] =
createFileCopy(
hostFile, initContext.getStartOffset(), initContext.getSelectionEndOffset());
}
});
final Document copyDocument = hostCopy[0].getViewProvider().getDocument();
assert copyDocument != null : "no document";
final OffsetTranslator translator =
new OffsetTranslator(hostEditor.getDocument(), initContext.getFile(), copyDocument);
CompletionAssertions.checkEditorValid(initContext.getEditor());
CommandProcessor.getInstance()
.runUndoTransparentAction(
new Runnable() {
@Override
public void run() {
ApplicationManager.getApplication()
.runWriteAction(
new Runnable() {
@Override
public void run() {
String dummyIdentifier = initContext.getDummyIdentifier();
if (StringUtil.isEmpty(dummyIdentifier)) return;
int startOffset =
hostMap.getOffset(CompletionInitializationContext.START_OFFSET);
int endOffset =
hostMap.getOffset(
CompletionInitializationContext.SELECTION_END_OFFSET);
copyDocument.replaceString(startOffset, endOffset, dummyIdentifier);
}
});
}
});
CompletionAssertions.checkEditorValid(initContext.getEditor());
final Project project = originalFile.getProject();
if (!synchronous) {
if (CompletionServiceImpl.isPhase(CompletionPhase.NoCompletion.getClass())
|| !CompletionServiceImpl.assertPhase(CompletionPhase.CommittingDocuments.class)) {
Disposer.dispose(translator);
return;
}
final CompletionPhase.CommittingDocuments phase =
(CompletionPhase.CommittingDocuments) CompletionServiceImpl.getCompletionPhase();
CompletionAutoPopupHandler.runLaterWithCommitted(
project,
copyDocument,
new Runnable() {
@Override
public void run() {
if (phase.checkExpired()) {
Disposer.dispose(translator);
return;
}
doComplete(
initContext, hasModifiers, invocationCount, hostCopy[0], hostMap, translator);
}
});
} else {
PsiDocumentManager.getInstance(project).commitDocument(copyDocument);
doComplete(initContext, hasModifiers, invocationCount, hostCopy[0], hostMap, translator);
}
}
private void doComplete(
CompletionInitializationContext initContext,
boolean hasModifiers,
int invocationCount,
PsiFile hostCopy,
OffsetMap hostMap,
OffsetTranslator translator) {
final Editor editor = initContext.getEditor();
CompletionAssertions.checkEditorValid(editor);
CompletionContext context =
createCompletionContext(
hostCopy,
hostMap.getOffset(CompletionInitializationContext.START_OFFSET),
hostMap,
initContext.getFile());
LookupImpl lookup = obtainLookup(editor);
CompletionParameters parameters = createCompletionParameters(invocationCount, context, editor);
CompletionPhase phase = CompletionServiceImpl.getCompletionPhase();
if (phase instanceof CompletionPhase.CommittingDocuments) {
if (phase.indicator != null) {
phase.indicator.closeAndFinish(false);
}
((CompletionPhase.CommittingDocuments) phase).replaced = true;
} else {
CompletionServiceImpl.assertPhase(CompletionPhase.NoCompletion.getClass());
}
final Semaphore freezeSemaphore = new Semaphore();
freezeSemaphore.down();
final CompletionProgressIndicator indicator =
new CompletionProgressIndicator(
editor,
parameters,
this,
freezeSemaphore,
initContext.getOffsetMap(),
hasModifiers,
lookup);
Disposer.register(indicator, hostMap);
Disposer.register(indicator, context.getOffsetMap());
Disposer.register(indicator, translator);
CompletionServiceImpl.setCompletionPhase(
synchronous
? new CompletionPhase.Synchronous(indicator)
: new CompletionPhase.BgCalculation(indicator));
final AtomicReference<LookupElement[]> data = indicator.startCompletion(initContext);
if (!synchronous) {
return;
}
if (freezeSemaphore.waitFor(2000)) {
final LookupElement[] allItems = data.get();
if (allItems != null
&& !indicator.isRunning()
&& !indicator
.isCanceled()) { // the completion is really finished, now we may auto-insert or show
// lookup
completionFinished(
initContext.getStartOffset(),
initContext.getSelectionEndOffset(),
indicator,
allItems,
hasModifiers);
checkNotSync(indicator, allItems);
return;
}
}
CompletionServiceImpl.setCompletionPhase(new CompletionPhase.BgCalculation(indicator));
indicator.showLookup();
}