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); }