public void replacePrefix(final String presentPrefix, final String newPrefix) {
if (!performGuardedChange(
new Runnable() {
@Override
public void run() {
EditorModificationUtil.deleteSelectedText(myEditor);
int offset = myEditor.getCaretModel().getOffset();
final int start = offset - presentPrefix.length();
myEditor.getDocument().replaceString(start, offset, newPrefix);
Map<LookupElement, PrefixMatcher> newMatchers =
new HashMap<LookupElement, PrefixMatcher>();
for (LookupElement item : getItems()) {
if (item.isValid()) {
PrefixMatcher matcher = itemMatcher(item).cloneWithPrefix(newPrefix);
if (matcher.prefixMatches(item)) {
newMatchers.put(item, matcher);
}
}
}
myMatchers.clear();
myMatchers.putAll(newMatchers);
myOffsets.clearAdditionalPrefix();
myEditor.getCaretModel().moveToOffset(start + newPrefix.length());
}
})) {
return;
}
synchronized (myList) {
myPresentableArranger.prefixChanged(this);
}
refreshUi(true, 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;
}
}
public void resort(boolean addAgain) {
final List<LookupElement> items = getItems();
synchronized (myList) {
myPresentableArranger.prefixChanged(this);
getListModel().removeAll();
}
if (addAgain) {
for (final LookupElement item : items) {
addItem(item, itemMatcher(item));
}
}
refreshUi(true, true);
}
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;
}
