Class: Protos::Theme

Inherits:
Object
  • Object
show all
Defined in:
lib/protos/theme.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(theme = {}, tailwind_merge: true, **kwargs) ⇒ Theme

Returns a new instance of Theme.



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# File 'lib/protos/theme.rb', line 19

def initialize(theme = {}, tailwind_merge: true, **kwargs)
  @should_merge = tailwind_merge

  @theme = Hash.new do |hash, key|
    hash[key] = TokenList.new
  end

  return if kwargs.empty? && theme.empty?

  theme.merge!(kwargs).each do |key, value|
    @theme[key].add(value)
  end
end

Class Method Details

.merger ⇒ Object 



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# File 'lib/protos/theme.rb', line 11

def merger
  # This could be a class variable to save memory for subclasses being
  # used along side this class, but seeing as how its an
  # internal class I don't see much benefit at the moment.
  @merger ||= TailwindMerge.new
end

Instance Method Details

#[](*keys) ⇒ Object

Key can be a symbol or string, they will be merged together for the final css class.

  • A symbol will be used to fetch a ‘TokenList` from the theme at that key.

  • A string is used as a plain css value



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# File 'lib/protos/theme.rb', line 37

def [](*keys)
  symbols, strings = keys.partition { |key| key.instance_of?(Symbol) }
  values = @theme.values_at(*symbols).map!(&:to_s).reject(&:empty?)
  values.concat(strings) unless strings.empty?

  return nil if values.empty?
  return values unless @should_merge

  self.class.merger.merge(values)
end

#add(key, value) ⇒ Object 



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# File 'lib/protos/theme.rb', line 52

def add(key, value)
  return if value.nil?

  @theme[key].add(value)
end

#key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/protos/theme.rb', line 48

def key?(key)
  @theme.key?(key)
end

#merge(hash) ⇒ Object 



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# File 'lib/protos/theme.rb', line 73

def merge(hash)
  return self unless hash

  hash.each do |key, value|
    next add(key, value) if key?(key.to_sym)
    # Handle negation
    next remove(key[1..].to_sym, value) if key.start_with?("!")
    # handle override
    next set(key[..-2].to_sym, value) if key.end_with?("!")

    set(key.to_sym, value)
  end

  self
end

#remove(key, value) ⇒ Object 



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# File 'lib/protos/theme.rb', line 58

def remove(key, value)
  token_list = @theme[key].remove(value)
  @theme.delete(key) if token_list.empty?
end

#set(key, value) ⇒ Object 



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# File 'lib/protos/theme.rb', line 63

def set(key, value)
  return if value.nil?

  if @theme.key?(key)
    @theme[key].clear.add(value)
  else
    @theme[key].add(value)
  end
end