public boolean fillInCommonPrefix(boolean explicitlyInvoked) {
if (explicitlyInvoked) {
setFocusDegree(FocusDegree.FOCUSED);
}
if (explicitlyInvoked && myCalculating) return false;
if (!explicitlyInvoked && mySelectionTouched) return false;
ListModel listModel = getListModel();
if (listModel.getSize() <= 1) return false;
if (listModel.getSize() == 0) return false;
final LookupElement firstItem = (LookupElement) listModel.getElementAt(0);
if (listModel.getSize() == 1 && firstItem instanceof EmptyLookupItem) return false;
final PrefixMatcher firstItemMatcher = itemMatcher(firstItem);
final String oldPrefix = firstItemMatcher.getPrefix();
final String presentPrefix = oldPrefix + getAdditionalPrefix();
String commonPrefix = getCaseCorrectedLookupString(firstItem);
for (int i = 1; i < listModel.getSize(); i++) {
LookupElement item = (LookupElement) listModel.getElementAt(i);
if (item instanceof EmptyLookupItem) return false;
if (!oldPrefix.equals(itemMatcher(item).getPrefix())) return false;
final String lookupString = getCaseCorrectedLookupString(item);
final int length = Math.min(commonPrefix.length(), lookupString.length());
if (length < commonPrefix.length()) {
commonPrefix = commonPrefix.substring(0, length);
}
for (int j = 0; j < length; j++) {
if (commonPrefix.charAt(j) != lookupString.charAt(j)) {
commonPrefix = lookupString.substring(0, j);
break;
}
}
if (commonPrefix.length() == 0 || commonPrefix.length() < presentPrefix.length()) {
return false;
}
}
if (commonPrefix.equals(presentPrefix)) {
return false;
}
for (int i = 0; i < listModel.getSize(); i++) {
LookupElement item = (LookupElement) listModel.getElementAt(i);
if (!itemMatcher(item).cloneWithPrefix(commonPrefix).prefixMatches(item)) {
return false;
}
}
myOffsets.setInitialPrefix(presentPrefix, explicitlyInvoked);
replacePrefix(presentPrefix, commonPrefix);
return true;
}
void appendPrefix(char c) {
checkValid();
myOffsets.appendPrefix(c);
synchronized (myList) {
myPresentableArranger.prefixChanged(this);
}
requestResize();
refreshUi(false, true);
ensureSelectionVisible(true);
}
private boolean checkReused() {
synchronized (myList) {
if (myPresentableArranger != myArranger) {
myPresentableArranger = myArranger;
myOffsets.clearAdditionalPrefix();
myPresentableArranger.prefixChanged(this);
return true;
}
return false;
}
}
@Override
public void dispose() {
assert ApplicationManager.getApplication().isDispatchThread();
assert myHidden;
if (myDisposed) {
LOG.error(disposeTrace);
return;
}
myOffsets.disposeMarkers();
myDisposed = true;
disposeTrace = DebugUtil.currentStackTrace() + "\n============";
//noinspection AssignmentToStaticFieldFromInstanceMethod
staticDisposeTrace = disposeTrace;
}
private boolean updateList(boolean onExplicitAction, boolean reused) {
if (!ApplicationManager.getApplication().isUnitTestMode()) {
ApplicationManager.getApplication().assertIsDispatchThread();
}
checkValid();
CollectionListModel<LookupElement> listModel = getListModel();
Pair<List<LookupElement>, Integer> pair;
synchronized (myList) {
pair = myPresentableArranger.arrangeItems(this, onExplicitAction || reused);
}
List<LookupElement> items = pair.first;
Integer toSelect = pair.second;
if (toSelect == null || toSelect < 0 || items.size() > 0 && toSelect >= items.size()) {
LOG.error(
"Arranger "
+ myPresentableArranger
+ " returned invalid selection index="
+ toSelect
+ "; items="
+ items);
toSelect = 0;
}
myOffsets.checkMinPrefixLengthChanges(items, this);
List<LookupElement> oldModel = listModel.toList();
listModel.removeAll();
if (!items.isEmpty()) {
listModel.add(items);
} else {
addEmptyItem(listModel);
}
updateListHeight(listModel);
myList.setSelectedIndex(toSelect);
return !ContainerUtil.equalsIdentity(oldModel, items);
}
boolean truncatePrefix(boolean preserveSelection) {
if (!myOffsets.truncatePrefix()) {
return false;
}
if (preserveSelection) {
markSelectionTouched();
}
boolean shouldUpdate;
synchronized (myList) {
shouldUpdate = myPresentableArranger == myArranger;
myPresentableArranger.prefixChanged(this);
}
requestResize();
if (shouldUpdate) {
refreshUi(false, true);
ensureSelectionVisible(true);
}
return true;
}
public boolean performGuardedChange(Runnable change) {
checkValid();
assert !myChangeGuard : "already in change";
myEditor.getDocument().startGuardedBlockChecking();
myChangeGuard = true;
boolean result;
try {
result = myOffsets.performGuardedChange(change);
} finally {
myEditor.getDocument().stopGuardedBlockChecking();
myChangeGuard = false;
}
if (!result || myDisposed) {
hide();
return false;
}
if (isVisible()) {
HintManagerImpl.updateLocation(this, myEditor, myUi.calculatePosition().getLocation());
}
checkValid();
return true;
}
public int getLookupOriginalStart() {
return myOffsets.getLookupOriginalStart();
}
@Override
public int getLookupStart() {
return myOffsets.getLookupStart(disposeTrace);
}
public int getPrefixLength(LookupElement item) {
return myOffsets.getPrefixLength(item, this);
}
public String getAdditionalPrefix() {
return myOffsets.getAdditionalPrefix();
}
public void restorePrefix() {
myOffsets.restorePrefix();
}