Module: Phlex::SGML::Elements

Included in:
HTML, HTML::StandardElements, HTML::VoidElements, Phlex::SVG::StandardElements
Defined in:
lib/phlex/sgml/elements.rb

Instance Method Summary collapse

Instance Method Details

#__register_void_element__(method_name, tag: method_name.name.tr("_", "-")) ⇒ Object 



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# File 'lib/phlex/sgml/elements.rb', line 103

def __register_void_element__(method_name, tag: method_name.name.tr("_", "-"))
	class_eval(<<~RUBY, __FILE__, __LINE__ + 1)
		# frozen_string_literal: true

		def #{method_name}(**attributes)
			state = @_state

			return unless state.should_render?

			buffer = state.buffer

			if attributes.length > 0 # with attributes
				buffer << "<#{tag}"
				begin
					buffer << (::Phlex::ATTRIBUTE_CACHE[attributes] ||= __attributes__(attributes))
				ensure
					buffer << ">"
				end
			else # without attributes
				buffer << "<#{tag}>"
			end

			nil
		end
	RUBY

	__registered_elements__[method_name] = tag

	method_name
end

#__registered_elements__ ⇒ Object 



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# File 'lib/phlex/sgml/elements.rb', line 4

def __registered_elements__
	@__registered_elements__ ||= {}
end

#register_element(method_name, tag: method_name.name.tr("_", "-")) ⇒ Object 



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# File 'lib/phlex/sgml/elements.rb', line 8

def register_element(method_name, tag: method_name.name.tr("_", "-"))
	class_eval(<<~RUBY, __FILE__, __LINE__ + 1)
		# frozen_string_literal: true

		def #{method_name}(**attributes)
			state = @_state
			buffer = state.buffer
			block_given = block_given?

			unless state.should_render?
				yield(self) if block_given
				return nil
			end

			if attributes.length > 0 # with attributes
				if block_given # with content block
					buffer << "<#{tag}"
					begin
						buffer << (Phlex::ATTRIBUTE_CACHE[attributes] ||= __attributes__(attributes))
					ensure
						buffer << ">"
					end

					begin
						original_length = buffer.bytesize
						content = yield(self)
						if original_length == buffer.bytesize
							case content
							when ::Phlex::SGML::SafeObject
								buffer << content.to_s
							when String
								buffer << ::Phlex::Escape.html_escape(content)
							when Symbol
								buffer << ::Phlex::Escape.html_escape(content.name)
							when nil
								nil
							else
								if (formatted_object = format_object(content))
									buffer << ::Phlex::Escape.html_escape(formatted_object)
								end
							end
						end
					ensure
						buffer << "</#{tag}>"
					end
				else # without content
					buffer << "<#{tag}"
					begin
						buffer << (::Phlex::ATTRIBUTE_CACHE[attributes] ||= __attributes__(attributes))
					ensure
						buffer << "></#{tag}>"
					end
				end
			else # without attributes
				if block_given # with content block
					buffer << "<#{tag}>"

					begin
						original_length = buffer.bytesize
						content = yield(self)
						if original_length == buffer.bytesize
							case content
							when ::Phlex::SGML::SafeObject
								buffer << content.to_s
							when String
								buffer << ::Phlex::Escape.html_escape(content)
							when Symbol
								buffer << ::Phlex::Escape.html_escape(content.name)
							when nil
								nil
							else
								if (formatted_object = format_object(content))
									buffer << ::Phlex::Escape.html_escape(formatted_object)
								end
							end
						end
					ensure
						buffer << "</#{tag}>"
					end
				else # without content
					buffer << "<#{tag}></#{tag}>"
				end
			end

			#{'flush' if tag == 'head'}

			nil
		end
	RUBY

	__registered_elements__[method_name] = tag

	method_name
end