protected void updateTitle(@Nullable V variable, String value) {
if (variable == null) return;
final String variableText = variable.getText();
final PsiElement identifier = variable.getNameIdentifier();
if (identifier != null) {
final int startOffsetInParent = identifier.getStartOffsetInParent();
setPreviewText(
variableText.substring(0, startOffsetInParent)
+ value
+ variableText.substring(startOffsetInParent + identifier.getTextLength()));
} else {
setPreviewText(variableText.replaceFirst(variable.getName(), value));
}
revalidate();
}
