Safe Haskell	None
Language	Haskell2010

Data.CSS.Preprocessor.Conditions

Description

Evaluates conditional CSS rules. Parse a CSS stylesheet to ConditionalStyles to evaluatedocument & supports rules. Call loadImports to resolve anyimport rules to media rules. And call resolve to convert into another StyleSheet instance whilst resolvingmedia rules.

Synopsis

data ConditionalStyles p = ConditionalStyles {
- hostURL :: URI
- mediaDocument :: String
- isUnstyled :: Bool
- rules :: [ConditionalRule p]
- propertyParser :: p
- layers :: Tree
- layerNamespace :: [Text]
- layerPath' :: [Int]
}
conditionalStyles :: PropertyParser p => URI -> String -> ConditionalStyles p
data ConditionalRule p
- = Priority [Int]
- | StyleRule' StyleRule
- | AtRule Text [Token]
- | External Expr URI
- | Internal Expr (ConditionalStyles p)
extractImports :: (Text -> Datum) -> (Token -> Datum) -> ConditionalStyles p -> [URI]
resolveImports :: ConditionalStyles p -> [(URI, ConditionalStyles p)] -> ConditionalStyles p
loadImports :: PropertyParser p => (URI -> IO Text) -> (Text -> Datum) -> (Token -> Datum) -> ConditionalStyles p -> [URI] -> IO (ConditionalStyles p)
resolve :: StyleSheet s => (Text -> Datum) -> (Token -> Datum) -> s -> ConditionalStyles p -> s
testIsStyled :: ConditionalStyles p -> ConditionalStyles p
data Datum
- = B Bool
- | N Float
- | R {
  - minv :: Float
  - maxv :: Float
  }

Documentation

data ConditionalStyles p Source #

Collects and evaluates conditional at-rules.

Constructors

ConditionalStyles

Fields

hostURL :: URI
The URL to the webpage being styled, for `@document` rules.
mediaDocument :: String
The type of document, `@document domain(...)` rules.
isUnstyled :: Bool
Whether the page provided any of it's own styling (valid or not)
rules :: [ConditionalRule p]
Queued style rules, to be evaluated later.
propertyParser :: p
PropertyParser to test against for `@supports` rules.
layers :: Tree
Known-named @layers.
layerNamespace :: [Text]
The current @layer, for resolving nesting
layerPath' :: [Int]
The integral path to the current @layer, for resolving nesting

Instances

Instances details

PropertyParser p => StyleSheet (ConditionalStyles p) Source #
Instance details Defined in Data.CSS.Preprocessor.Conditions Methods setPriority :: Int -> ConditionalStyles p -> ConditionalStyles p # setPriorities :: [Int] -> ConditionalStyles p -> ConditionalStyles p # addRule :: ConditionalStyles p -> StyleRule -> ConditionalStyles p # addAtRule :: ConditionalStyles p -> Text -> [Token] -> (ConditionalStyles p, [Token]) #

conditionalStyles :: PropertyParser p => URI -> String -> ConditionalStyles p Source #

Constructs an empty ConditionalStyles.

data ConditionalRule p Source #

Style rules that can be queued in a ConditionalStyles.

Constructors

Priority [Int]
StyleRule' StyleRule
AtRule Text [Token]
External Expr URI
Internal Expr (ConditionalStyles p)

extractImports :: (Text -> Datum) -> (Token -> Datum) -> ConditionalStyles p -> [URI] Source #

Returns `@import` URLs that need to be imported.

resolveImports :: ConditionalStyles p -> [(URI, ConditionalStyles p)] -> ConditionalStyles p Source #

Substitutes external values in for `@import` rules.

loadImports :: PropertyParser p => (URI -> IO Text) -> (Text -> Datum) -> (Token -> Datum) -> ConditionalStyles p -> [URI] -> IO (ConditionalStyles p) Source #

Evaluates a given "loader" to resolve any `@import` rules.

resolve :: StyleSheet s => (Text -> Datum) -> (Token -> Datum) -> s -> ConditionalStyles p -> s Source #

Evaluates any media queries, returning a new StyleSheet with the queued operations.

testIsStyled :: ConditionalStyles p -> ConditionalStyles p Source #

Flags whether any style rules have been applied yet, for the sake of evaluating "@document unstyled {...}".

data Datum Source #

Dynamic types for evaluating media queries.

Constructors

B Bool
N Float
R
Fields minv :: Float maxv :: Float

Instances

Instances details

Eq Datum Source #
Instance details Defined in Data.CSS.Preprocessor.Conditions.Expr Methods (==) :: Datum -> Datum -> Bool (/=) :: Datum -> Datum -> Bool