private static boolean undoEvents(
LookupImpl lookup, @NotNull final LinkedList<EditorChangeAction> events) {
AccessToken token = WriteAction.start();
try {
return lookup.performGuardedChange(
new Runnable() {
@Override
public void run() {
for (EditorChangeAction event : events) {
event.performUndo();
}
}
},
events.toString());
} finally {
token.finish();
}
}
@SuppressWarnings("AssignmentToStaticFieldFromInstanceMethod")
@Override
public Result beforeCharTyped(
final char charTyped, Project project, final Editor editor, PsiFile file, FileType fileType) {
assert !inside;
inside = true;
try {
final LookupImpl lookup = (LookupImpl) LookupManager.getActiveLookup(editor);
if (lookup == null) {
return Result.CONTINUE;
}
if (charTyped == ' '
&& ChooseItemReplaceAction.hasTemplatePrefix(lookup, TemplateSettings.SPACE_CHAR)) {
return Result.CONTINUE;
}
final CharFilter.Result result = getLookupAction(charTyped, lookup);
if (lookup.isLookupDisposed()) {
return Result.CONTINUE;
}
if (!lookup.performGuardedChange(
new Runnable() {
@Override
public void run() {
EditorModificationUtil.deleteSelectedText(editor);
}
})) {
return Result.STOP;
}
if (result == CharFilter.Result.ADD_TO_PREFIX) {
Document document = editor.getDocument();
long modificationStamp = document.getModificationStamp();
if (!lookup.performGuardedChange(
new Runnable() {
@Override
public void run() {
EditorModificationUtil.typeInStringAtCaretHonorBlockSelection(
editor, String.valueOf(charTyped), true);
}
})) {
return Result.STOP;
}
lookup.appendPrefix(charTyped);
if (lookup.isStartCompletionWhenNothingMatches() && lookup.getItems().isEmpty()) {
final CompletionProgressIndicator completion =
CompletionServiceImpl.getCompletionService().getCurrentCompletion();
if (completion != null) {
completion.scheduleRestart();
} else {
AutoPopupController.getInstance(editor.getProject()).scheduleAutoPopup(editor, null);
}
}
AutoHardWrapHandler.getInstance()
.wrapLineIfNecessary(
editor,
DataManager.getInstance().getDataContext(editor.getContentComponent()),
modificationStamp);
final CompletionProgressIndicator completion =
CompletionServiceImpl.getCompletionService().getCurrentCompletion();
if (completion != null) {
completion.prefixUpdated();
}
return Result.STOP;
}
if (result == CharFilter.Result.SELECT_ITEM_AND_FINISH_LOOKUP && lookup.isFocused()) {
LookupElement item = lookup.getCurrentItem();
if (item != null) {
if (completeTillTypedCharOccurrence(charTyped, lookup, item)) {
return Result.STOP;
}
inside = false;
((CommandProcessorEx) CommandProcessor.getInstance()).enterModal();
try {
finishLookup(charTyped, lookup);
} finally {
((CommandProcessorEx) CommandProcessor.getInstance()).leaveModal();
}
return Result.STOP;
}
}
lookup.hide();
TypedHandler.autoPopupCompletion(editor, charTyped, project);
return Result.CONTINUE;
} finally {
inside = false;
}
}