public void invoke(
@NotNull Project project, @NotNull final Editor editor, @NotNull PsiFile file) {
if (!CodeInsightUtilBase.prepareFileForWrite(file)) return;
LookupManager.getInstance(project).hideActiveLookup();
final CharSequence charsSequence = editor.getDocument().getCharsSequence();
final CompletionData data = computeData(editor, charsSequence);
String currentPrefix = data.myPrefix;
final CompletionState completionState = getCompletionState(editor);
String oldPrefix = completionState.oldPrefix;
CompletionVariant lastProposedVariant = completionState.lastProposedVariant;
if (lastProposedVariant == null
|| oldPrefix == null
|| !new CamelHumpMatcher(oldPrefix).prefixMatches(currentPrefix)
|| // oldPrefix.length() == 0 ||
!currentPrefix.equals(lastProposedVariant.variant)) {
// we are starting over
oldPrefix = currentPrefix;
completionState.oldPrefix = oldPrefix;
lastProposedVariant = null;
}
CompletionVariant nextVariant =
computeNextVariant(editor, oldPrefix, lastProposedVariant, data);
if (nextVariant == null) return;
int replacementEnd = data.startOffset + data.myWordUnderCursor.length();
editor.getDocument().replaceString(data.startOffset, replacementEnd, nextVariant.variant);
editor.getCaretModel().moveToOffset(data.startOffset + nextVariant.variant.length());
completionState.lastProposedVariant = nextVariant;
highlightWord(editor, nextVariant, project, data);
}
