css

Documentation

Index

• func Inherited(prop string) bool
• type AttributeSelector
  • func (attr *AttributeSelector) String() string
• type BySpecificity
  • func (s BySpecificity) Len() int
  • func (s BySpecificity) Less(i, j int) bool
  • func (s BySpecificity) Swap(i, j int)
• type Color
  • func (c Color) RGBA() (r, g, b, a uint32)
  • func (c Color) String() string
• type Current
  • func (c Current) String() string
• type Declaration
  • func ParseDeclarations(r io.Reader) ([]Declaration, error)
  • func (decl *Declaration) String() string
• type EmLength
  • func (l EmLength) String() string
• type Identifier
  • func (i Identifier) String() string
• type List
  • func (l List) String() string
• type LoadingStylesheet
  • func LoadStylesheet(r io.Reader) LoadingStylesheet
  • func (l *LoadingStylesheet) Get() *Stylesheet
• type LoadingStylesheets
  • func (l *LoadingStylesheets) Add(r io.Reader)
  • func (l *LoadingStylesheets) Collect() *Stylesheet
• type Not
• type Number
  • func (n Number) String() string
• type NumberedPC
• type Origin
• type Percentage
  • func (p Percentage) String() string
• type PseudoClass
• type PxLength
  • func (l PxLength) String() string
• type QuotedString
  • func (s QuotedString) String() string
• type Rule
  • func (r *Rule) String() string
• type Selector
  • func (sel *Selector) Specificity() Specificity
  • func (sel *Selector) String() string
• type SimplePC
• type SimpleSelector
  • func (sel *SimpleSelector) Specificity() Specificity
  • func (sel *SimpleSelector) String() string
• type Specificity
  • func (a Specificity) Add(b Specificity) Specificity
  • func (a Specificity) LessThan(b Specificity) bool
• type Stylesheet
  • func Parse(r io.Reader) (*Stylesheet, error)
  • func (ss *Stylesheet) String() string
• type Value
  • func InitialValue(prop string) Value

Functions

func Inherited

func Inherited(prop string) bool

Inherited returns true, if prop is inherited.

Types

type AttributeSelector

type AttributeSelector struct {
	Name  string
	Op    rune
	Value string
}

An AttributeSelector is the square-bracket-thing.

func (*AttributeSelector) String

func (attr *AttributeSelector) String() string

type BySpecificity

type BySpecificity []Selector

BySpecificity impelments sort.Interface

func (BySpecificity) Len

func (s BySpecificity) Len() int

func (BySpecificity) Less

func (s BySpecificity) Less(i, j int) bool

func (BySpecificity) Swap

func (s BySpecificity) Swap(i, j int)

type Color

type Color struct{ R, G, B, A uint8 }

A Color is any color, in RGBA format. It doesn't matter in which way the color was specified. The value 'transparent' is also a Color.

func (Color) RGBA

func (c Color) RGBA() (r, g, b, a uint32)

RGBA as specified by color.Color.

func (Color) String

func (c Color) String() string

type Current

type Current string

Current tells the user agent to look up another property. A typical use case is Current("color") as an initial value.

func (Current) String

func (c Current) String() string

type Declaration

type Declaration struct {
	Name      string
	Value     Value
	Important bool
}

A Declaration is a name-value pair, e.g. "position: fixed"

func ParseDeclarations

func ParseDeclarations(r io.Reader) ([]Declaration, error)

ParseDeclarations parses a CSS declaration block, expands shorthand rules,

func (*Declaration) String

func (decl *Declaration) String() string

type EmLength

type EmLength float64

An EmLength is a length given in ems, such as 0.5em

func (EmLength) String

func (l EmLength) String() string

type Identifier

type Identifier string

An Identifier is any non-numeric, non-quoted word on the right side in a CSS declaration.

func (Identifier) String

func (i Identifier) String() string

type List

type List []Value

List is a list of other Values

func (List) String

func (l List) String() string

type LoadingStylesheet

type LoadingStylesheet struct {
	// contains filtered or unexported fields
}

func LoadStylesheet

func LoadStylesheet(r io.Reader) LoadingStylesheet

func (*LoadingStylesheet) Get

func (l *LoadingStylesheet) Get() *Stylesheet

type LoadingStylesheets

type LoadingStylesheets []LoadingStylesheet

func (*LoadingStylesheets) Add

func (l *LoadingStylesheets) Add(r io.Reader)

func (*LoadingStylesheets) Collect

func (l *LoadingStylesheets) Collect() *Stylesheet

type Not

type Not struct {
	Sel *SimpleSelector
}

Not is the :not(...) pseudo class This type implements the PseudoClass interface.

type Number

type Number float64

A Number is just a number

func (Number) String

func (n Number) String() string

type NumberedPC

type NumberedPC struct {
	Name     string
	Mul, Add float64
}

A NumberedPC is a pseudo class with an index, like :nth-child(an+b). This type implements the PseudoClass interface.

type Origin

type Origin int

Origin specifies the kind of stylesheet a rule can come from.

const (
	Default Origin = iota
	User
	Author
)

Default is a rule implied by the definition of HTML, User is a rule specified by the user and Author is any rule that was specified by the page author.

type Percentage

type Percentage float64

A Percentage is any numeric value that was followed by a % sign.

func (Percentage) String

func (p Percentage) String() string

type PseudoClass

type PseudoClass interface {
	// contains filtered or unexported methods
}

A PseudoClass is either a SimplePC or Not or a NumberedPC.

type PxLength

type PxLength float64

A PxLength is a length given in pixels, such as 12px

func (PxLength) String

func (l PxLength) String() string

type QuotedString

type QuotedString string

A QuotedString is a value like in font-face: "Times New Roman".

func (QuotedString) String

func (s QuotedString) String() string

type Rule

type Rule struct {
	Selectors    []Selector
	Declarations []Declaration
}

A Rule is a CSS rule.

func (*Rule) String

func (r *Rule) String() string

type Selector

type Selector struct {
	Final      SimpleSelector
	Combinator rune
	Condition  *Selector
}

A Selector is a full CSS selector

func (*Selector) Specificity

func (sel *Selector) Specificity() Specificity

Specificity calculates the selector's specificity.

func (*Selector) String

func (sel *Selector) String() string

type SimplePC

type SimplePC string

A SimplePC is a pseudo class without an argument, e.g. :hover, :link. This type implements the PseudoClass interface.

type SimpleSelector

type SimpleSelector struct {
	Tag           string // empty for none
	ID            string // ditto
	Class         []string
	AttrSel       []AttributeSelector
	PseudoClasses []PseudoClass
	PseudoElement string // non-empty if this is a pseudo-element; only valid for final (rightmost) selector
}

A SimpleSelector is a selector without any combinators, e.g. div.foo#bar:hover

func (*SimpleSelector) Specificity

func (sel *SimpleSelector) Specificity() Specificity

Specificity returns the specificity of the selector.

func (*SimpleSelector) String

func (sel *SimpleSelector) String() string

type Specificity

type Specificity struct{ A, B, C, D int }

Specificity as in http://www.w3.org/TR/CSS2/cascade.html#specificity

func (Specificity) Add

func (a Specificity) Add(b Specificity) Specificity

Add adds two specificities.

func (Specificity) LessThan

func (a Specificity) LessThan(b Specificity) bool

LessThan checks if a < b.

type Stylesheet

type Stylesheet struct {
	Rules       []Rule
	BeforeRules []Rule
	AfterRules  []Rule
}

A Stylesheet is a collection of rules.

func Parse

func Parse(r io.Reader) (*Stylesheet, error)

Parse parses a complete CSS stylesheet. TODO either check for errors or don't return an error; probably not returning an error is better, since CSS simly ignores anything it doesn't understand.

func (*Stylesheet) String

func (ss *Stylesheet) String() string

type Value

type Value interface {
	String() string
}

A Value is anything that can be on the right side of a CSS declaration.

func InitialValue

func InitialValue(prop string) Value

InitialValue returns the initial value of the property prop.