RuleDSL

Part of the DSL (Domain Specific Language) for building Themes.

A theme contains top-level rules in the form :

SELECTOR { ... }

... is a block of code with RuleDSL as the receiver (i.e. this is RuleDSL)

Within the block, you can define property values :

"PROPERTY_NAME" ( PROPERTY_VALUE )

There are also convenience methods for common properties. e.g. :

textColor( color )

Which is equivalent to :

"textColor" ( color )

You can also define sub-rules :

child(SELECTOR) { ... }
descendant(SELECTOR) { ... }
SELECTOR { ... }

The new rule's selector will be either a ChildSelector, DescendantSelector or an AndSelector.

In the first two cases SELECTOR can be a String or a Selector. In the last case, it can also be an enum which implements WithPseudoStyle. e.g.

Orientation.HORIZONTAL { ... }

In this example, the rule matches a node if the Node's pseudoStyles contains the String ":horizontal". It is NOT checking the node's orientation property.