JavaFX CSS Styling Plumbing

StyleableProperty1.java

    public final void setBackScale(double value) {
        backScaleProperty().set(value);
    }
    public final double getBackScale() {
        return backScale == null ? 0.7 : backScale.get();
    }

    public final DoubleProperty backScaleProperty() {
        if (backScale == null) {
            backScale = new StyleableDoubleProperty(0.7) {

                @Override
                protected void invalidated() {
                    styleablePropertyInvalidated();
                }

                @Override
                public StyleableProperty getStyleableProperty() {
                    return BACK_SCALE;
                }

                @Override
                public Object getBean() {
                    return ShelfDeckSkin.this;
                }

                @Override
                public String getName() {
                    return "backScale";
                }
            };
        }
        return backScale;
    }

StyleableProperty2.java

    private static final StyleableProperty<ShelfDeckSkin,Number> BACK_SCALE =
            new StyleableProperty<ShelfDeckSkin,Number>("-x-back-scale",
                    SizeConverter.getInstance(), 0.7) {

                @Override
                public boolean isSettable(ShelfDeckSkin deck) {
                    return deck.backScale == null || !deck.backScale.isBound();
                }

                @Override
                public WritableValue<Number> getWritableValue(ShelfDeckSkin deck) {
                    return deck.backScaleProperty();
                }
            };

StyleableProperty3.java

    private static List<StyleableProperty> STYLEABLES;

    @Override
    @Deprecated
    public List<StyleableProperty> impl_getStyleableProperties() {
        if (STYLEABLES == null) {
            final List<StyleableProperty> styleables = new ArrayList<StyleableProperty>(super.impl_getStyleableProperties());
            Collections.addAll(styleables,
                    BACK_ANGLE,
                    BACK_OFFSET,
                    BACK_SCALE,
                    BACK_SPACING);
            STYLEABLES = Collections.unmodifiableList(styleables);
        }
        return STYLEABLES;    //To change body of overridden methods use File | Settings | File Templates.
    }