################################################################################
# Form Classifier
# Adds helpful class names to HTML form elements
################################################################################
# Overrides commonly-used Rails form methods in order to add descriptive
# class names for use in CSS.
################################################################################
 
module FormClassifier
 
	# Methods from FormHelper
	# http://api.rubyonrails.com/classes/ActionView/Helpers/FormHelper.html
 
	# Class: "check_box"
	def check_box(object_name, method, options = {}, checked_value = "1", unchecked_value = "0") 
		options = check_options(options)
		options[:class] << 'check_box'
		super(object_name, method, options, checked_value, unchecked_value)
	end
 
	# Class: "file_field text_field" 
	def file_field(object_name, method, options = {}) 
		options = check_options(options)
		options[:class] << 'file_field'
		super(object_name, method, options)
	end
 
	# Class: "hidden_field text_field"
	def hidden_field(object_name, method, options = {}) 
		options = check_options(options)
		options[:class] << 'hidden_field'
		super(object_name, method, options)
	end
 
	# Class: "password_field text_field"
	def password_field(object_name, method, options = {}) 
		options = check_options(options)
		options[:class] << 'password_field'
		super(object_name, method, options)
	end
 
	# Class: "radio"
	def radio_button(object_name, method, tag_value, options = {}) 
		options = check_options(options)
		options[:class] << 'radio'
		super(object_name, method, tag_value, options)
	end
 
	# Class: "text_area"
	def text_area(object_name, method, options = {}) 
		options = check_options(options)
		options[:class] << 'text_area'
		super(object_name, method, options)
	end
 
	# Class: "text_field"
	def text_field(object_name, method, options = {}) 
		options = check_options(options)
		options[:class] << 'text_field'
		super(object_name, method, options)
	end
 
 
	# Methods from FormTagHelper
	# http://api.rubyonrails.com/classes/ActionView/Helpers/FormTagHelper.html
 
	# Class: "check_box"
	def check_box_tag(name, value = "1", checked = false, options = {}) 
		options = check_options(options)
		options[:class] << 'check_box'
		super(name, value, checked, options)
	end
 
	# Class: "file_field text_field"
	def file_field_tag(name, options = {}) 
 
 
		options = check_options(options)
		options[:class] << 'file_field'
		super(name, options)
	end
 
	# Class: "hidden_field text_field"
	def hidden_field_tag(name, value = nil, options = {}) 
		options = check_options(options)
		options[:class] << 'hidden_field'
		super(name, value, options)
	end
 
	# Class: "image_submit"
	def image_submit_tag(source, options = {}) 
		options = check_options(options)
		options[:class] << 'image_submit'
		super(source, options)
	end
 
	# Class: "password_field text_field"
	def password_field_tag(name = "password", value = nil, options = {}) 
		options = check_options(options)
		options[:class] << 'password_field'
		super(name, value, options)
	end
 
	# Class: "radio"
	def radio_button_tag(name, value, checked = false, options = {}) 
		options = check_options(options)
		options[:class] << 'radio'
		super(name, value, checked, options)
	end
 
	# Class: "select"
	def select_tag(name, option_tags = nil, options = {}) 
		options = check_options(options)
		options[:class] << 'select'
		super(name, option_tags, options)
	end
 
	# Class: "button"
	def submit_tag(value = "Save changes", options = {}) 
		options = check_options(options)
		options[:class] << 'button'
		super(value, options)
	end
 
	# Class: "text_area"
	def text_area_tag(name, content = nil, options = {}) 
		options = check_options(options)
		options[:class] << 'text_area'
		super(name, content, options)
	end
 
	# Class: "text_field"
	def text_field_tag(name, value = nil, options = {}) 
		options = check_options(options)
		options[:class] << 'text_field'
		super(name, value, options)
	end
 
 
	# Methods from UrlHelper
	# http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html
 
	# Class: "button"
	def button_to(name, options = {}, html_options = {}) 
		html_options = check_options(html_options)
		html_options[:class] << 'button'
		super(name, options, html_options)
	end
 
 
	# Methods from PrototypeHelper
	# http://api.rubyonrails.org/classes/ActionView/Helpers/PrototypeHelper.html
 
	# Class: "button"
	def submit_to_remote(name, value, options = {}) 		
		options[:html] ||= Hash.new
		options[:html] = check_options(options[:html])
		options[:html][:class] << 'button'
		super(name, value, options) 
	end
 
 
	private
 
	def check_options(options)
		# Make sure :class key exists in hash, append space if it does
		options[:class] ||= String.new
		options[:class] += options[:class].length == 0 ? '' : ' '
		return options
	end
 
end