Class: Dommy::CSSNamespace

Inherits:
Object
  • Object
show all
Includes:
Bridge::Methods
Defined in:
lib/dommy/css.rb

Overview

‘window.CSS` namespace object — `escape()` for safe selector building (used by Turbo and friends) and a `supports()` stub (no CSS engine).

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Bridge::Methods

included

Class Method Details

.escape(value) ⇒ Object

CSSOM ‘CSS.escape` — escape a string for use as an identifier in a selector. Follows the spec’s char rules closely enough for selectors.



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# File 'lib/dommy/css.rb', line 307

def self.escape(value)
  str = value.to_s
  out = +""
  str.each_char.with_index do |ch, i|
    code = ch.ord
    if code.zero?
      out << "\uFFFD"
    elsif (code >= 0x01 && code <= 0x1F) || code == 0x7F ||
          (i.zero? && code >= 0x30 && code <= 0x39) ||
          (i == 1 && code >= 0x30 && code <= 0x39 && str[0] == "-")
      out << "\\#{code.to_s(16)} "
    elsif code >= 0x80 || code == 0x2D || code == 0x5F ||
          (code >= 0x30 && code <= 0x39) ||
          (code >= 0x41 && code <= 0x5A) || (code >= 0x61 && code <= 0x7A)
      out << ch
    else
      out << "\\#{ch}"
    end
  end
  out
end

Instance Method Details

#__js_call__(method, args) ⇒ Object 



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# File 'lib/dommy/css.rb', line 296

def __js_call__(method, args)
  case method
  when "escape"
    self.class.escape(args[0])
  when "supports"
    false
  end
end

#__js_get__(_key) ⇒ Object 



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# File 'lib/dommy/css.rb', line 291

def __js_get__(_key) = nil

#__js_set__(_key, _value) ⇒ Object 



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# File 'lib/dommy/css.rb', line 292

def __js_set__(_key, _value) = Bridge::UNHANDLED