class Hamloft::StyleBuilder
Attributes
options[RW]
styles[RW]
Public Class Methods
new(options, styles = [])
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# File lib/hamloft/style_builder.rb, line 6 def initialize(options, styles = []) @options = {} @styles = {} # expand margins if styles.include?(:margin) styles |= %i[margin_top margin_right margin_bottom margin_left] styles.reject! { |_style| styles === :margin } end # expand paddings if styles.include?(:padding) styles |= %i[padding_top padding_right padding_bottom padding_left] styles.reject! { |_style| styles === :padding } end # build sanitized options options.each do |k, v| @options[sanitize_style(k)] = v end # add initial styles add_multi(styles) end
Public Instance Methods
add(style, value = nil, template = nil)
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# File lib/hamloft/style_builder.rb, line 43 def add(style, value = nil, template = nil) style = sanitize_style(style) # handle empty value field if (!value || value.empty?) && !(!(@options[style]) || @options[style].empty?) value = @options[style] end # apply template if value && !value.empty? && template && !template.empty? value = ERB.new(template).result(binding) end @styles[style] = value if value && !value.empty? end
add_multi(styles)
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# File lib/hamloft/style_builder.rb, line 37 def add_multi(styles) styles.each do |style| add(style) end end
process(block = nil)
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# File lib/hamloft/style_builder.rb, line 31 def process(block = nil) block.call(self) if block result = @styles.map { |k, v| "#{k}: #{v};" }.join(' ') result.empty? ? nil : result end
sanitize_style(value)
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# File lib/hamloft/style_builder.rb, line 59 def sanitize_style(value) value.to_s.gsub(/([A-Z]+)([A-Z][a-z])/, '\1-\2') .gsub(/([a-z\d])([A-Z])/, '\1-\2') .tr('_', '-').downcase end