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##
# This class represents a field in a form. It handles the following input
# tags found in a form:
#
# * text
# * password
# * hidden
# * int
# * textarea
# * keygen
#
# To set the value of a field, just use the value method:
#
# field.value = "foo"
class Mechanize::Form::Field
extend Forwardable
attr_accessor :name, :value, :node, :type
# This fields value before it's sent through Util.html_unescape.
attr_reader :raw_value
# index is used to maintain order for fields with Hash nodes
attr_accessor :index
def initialize node, value = node['value']
@node = node
@name = Mechanize::Util.html_unescape(node['name'])
@raw_value = value
@value = if value.is_a? String
Mechanize::Util.html_unescape(value)
else
value
end
@type = node['type']
end
def query_value
[[@name, @value || '']]
end
def <=> other
return 0 if self == other
# If both are hashes, sort by index
if Hash === node && Hash === other.node && index
return index <=> other.index
end
# Otherwise put Hash based fields at the end
return 1 if Hash === node
return -1 if Hash === other.node
# Finally let nokogiri determine sort order
node <=> other.node
end
# This method is a shortcut to get field's DOM id.
# Common usage: form.field_with(:dom_id => "foo")
def dom_id
node['id']
end
# This method is a shortcut to get field's DOM class.
# Common usage: form.field_with(:dom_class => "foo")
def dom_class
node['class']
end
##
# :method: search
#
# Shorthand for +node.search+.
#
# See Nokogiri::XML::Node#search for details.
##
# :method: css
#
# Shorthand for +node.css+.
#
# See also Nokogiri::XML::Node#css for details.
##
# :method: xpath
#
# Shorthand for +node.xpath+.
#
# See also Nokogiri::XML::Node#xpath for details.
##
# :method: at
#
# Shorthand for +node.at+.
#
# See also Nokogiri::XML::Node#at for details.
##
# :method: at_css
#
# Shorthand for +node.at_css+.
#
# See also Nokogiri::XML::Node#at_css for details.
##
# :method: at_xpath
#
# Shorthand for +node.at_xpath+.
#
# See also Nokogiri::XML::Node#at_xpath for details.
def_delegators :node, :search, :css, :xpath, :at, :at_css, :at_xpath
def inspect # :nodoc:
"[%s:0x%x type: %s name: %s value: %s]" % [
self.class.name.sub(/Mechanize::Form::/, '').downcase,
object_id, type, name, value
]
end
end
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