LiveStyle.Property (LiveStyle v0.13.0)

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CSS property information and lookups.

This module provides compile-time generated function clauses for efficient property lookups, following the pattern used by the unicode library.

All property data is loaded from external files at compile time via LiveStyle.PropertyMetadata, enabling:

  • O(1) pattern-matched lookups instead of runtime lookups
  • Automatic recompilation when data files change
  • Single source of truth for property metadata

Property Categories

CSS properties are categorized by their specificity level:

  • :shorthands_of_shorthands - Affect many properties (e.g., margin, padding)
  • :shorthands_of_longhands - Expand to fewer properties (e.g., margin-block)
  • :longhand_logical - Logical longhand properties (default)
  • :longhand_physical - Physical longhand properties (e.g., margin-top)

Examples

iex> LiveStyle.Property.category("margin")
:shorthands_of_shorthands

iex> LiveStyle.Property.category("color")
:longhand_logical

Summary

Functions

category(arg1)

Returns the category of a CSS property.

disallowed_shorthand?(arg1)

Returns true if the property is a disallowed shorthand in strict mode.

position_try?(arg1)

Returns true if the property is allowed in @position-try rules.

position_try_properties()

Returns all position-try properties as a MapSet.

rtl_value?(arg1)

Returns true if the property needs value flipping in RTL mode.

unit_suffix(property)

Returns the appropriate unit suffix for a numeric value of this property.

Functions

category(arg1)

@spec category(String.t()) :: atom()

Returns the category of a CSS property.

Categories determine property priority in the generated CSS.

Categories

  • :shorthands_of_shorthands - Priority 1000 (e.g., margin, padding)
  • :shorthands_of_longhands - Priority 2000 (e.g., margin-block, border-color)
  • :longhand_logical - Priority 3000 (default for unlisted properties)
  • :longhand_physical - Priority 4000 (e.g., margin-top, width)

Examples

iex> LiveStyle.Property.category("margin")
:shorthands_of_shorthands

iex> LiveStyle.Property.category("border-color")
:shorthands_of_longhands

iex> LiveStyle.Property.category("color")
:longhand_logical

iex> LiveStyle.Property.category("width")
:longhand_physical

disallowed_shorthand?(arg1)

@spec disallowed_shorthand?(String.t()) :: boolean()

Returns true if the property is a disallowed shorthand in strict mode.

Examples

iex> LiveStyle.Property.disallowed_shorthand?("background")
true

iex> LiveStyle.Property.disallowed_shorthand?("margin")
false

position_try?(arg1)

@spec position_try?(String.t()) :: boolean()

Returns true if the property is allowed in @position-try rules.

Examples

iex> LiveStyle.Property.position_try?("top")
true

iex> LiveStyle.Property.position_try?("width")
true

iex> LiveStyle.Property.position_try?("color")
false

position_try_properties()

Returns all position-try properties as a MapSet.

rtl_value?(arg1)

@spec rtl_value?(String.t()) :: boolean()

Returns true if the property needs value flipping in RTL mode.

Properties like float, clear have values that need to be flipped (e.g., start -> right in RTL). Note that text-align is NOT included because browsers handle start/end natively.

Examples

iex> LiveStyle.Property.rtl_value?("float")
true

iex> LiveStyle.Property.rtl_value?("clear")
true

iex> LiveStyle.Property.rtl_value?("color")
false

unit_suffix(property)

@spec unit_suffix(String.t() | nil) :: String.t()

Returns the appropriate unit suffix for a numeric value of this property.

Examples

iex> LiveStyle.Property.unit_suffix("width")
"px"

iex> LiveStyle.Property.unit_suffix("opacity")
""

iex> LiveStyle.Property.unit_suffix("animation-duration")
"ms"