# Class Rule

java.lang.Object
javafx.css.Rule

public final class Rule extends Object
A Rule is a collection of CSS `Selector`s and `Declaration`s.

Since:
  9

- ## Method Summary

  Modifier and Type
  Method
  Description
  `final ObservableList<Declaration>`
  `getDeclarations()`
  This method is to support tooling that may want to add declarations to or remove declarations from a Rule.
  `StyleOrigin`
  `getOrigin()`
  Get the `StyleOrigin` of this `Stylesheet`.
  `final ObservableList<Selector>`
  `getSelectors()`
  This method is to support tooling that may want to add selectors to or remove selectors from a Rule.
  `Stylesheet`
  `getStylesheet()`
  Gets the `Stylesheet` this `Rule` belongs to.
  `String`
  `toString()`
  Converts this object to a `String`.

  ### Methods declared in class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Method Details

  - ### getDeclarations

    public final ObservableList<Declaration> getDeclarations()
    This method is to support tooling that may want to add declarations to or remove declarations from a Rule. Changes to the list are tracked so that added declarations are tagged as belonging to this rule, and the rule for removed declarations is nulled out.
    Returns:
      a observable list of declarations

  - ### getSelectors

    public final ObservableList<Selector> getSelectors()
    This method is to support tooling that may want to add selectors to or remove selectors from a Rule. Changes to the list are tracked so that added selectors are tagged as belonging to this rule, and the rule for removed selectors is nulled out.
    Returns:
      an observable list of selectors

  - ### getStylesheet

    public Stylesheet getStylesheet()
    Gets the `Stylesheet` this `Rule` belongs to.
    Returns:
      the stylesheet

  - ### getOrigin

    public StyleOrigin getOrigin()
    Get the `StyleOrigin` of this `Stylesheet`.
    Returns:
      the origin of the stylesheet

  - ### toString

    public String toString()
    Converts this object to a `String`.
    Overrides:
      `toString` in class `Object`
    Returns:
      the converted `String`