Class: Capybara::Selector

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/capybara/selector/selector.rb,
lib/capybara/selector/css.rb,
lib/capybara/selector/filter_set.rb,
lib/capybara/selector/filters/base.rb,
lib/capybara/selector/filters/node_filter.rb,
lib/capybara/selector/filters/expression_filter.rb

Overview

Built-in Selectors

* **:xpath** - Select elements by XPath expression
* Locator: An XPath expression

* **:css** - Select elements by CSS selector
* Locator: A CSS selector

* **:id** - Select element by id
* Locator: The id of the element to match

* **:field** - Select field elements (input [not of type submit, image, or hidden], textarea, select)
* Locator: Matches against the id, name, or placeholder
* Filters:
  * :id (String)

Defined Under Namespace

Modules: Filters Classes: CSS, FilterSet

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, &block) ⇒ Selector

Returns a new instance of Selector.



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# File 'lib/capybara/selector/selector.rb', line 182

def initialize(name, &block)
  @name = name
  @filter_set = FilterSet.add(name) {}
  @match = nil
  @label = nil
  @failure_message = nil
  @description = nil
  @format = nil
  @expression = nil
  @expression_filters = {}
  @default_visibility = nil
  instance_eval(&block)
end

Instance Attribute Details

#format ⇒ Object (readonly)

Returns the value of attribute format.



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# File 'lib/capybara/selector/selector.rb', line 161

def format
  @format
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/capybara/selector/selector.rb', line 161

def name
  @name
end

Class Method Details

.add(name, &block) ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 169

def add(name, &block)
  all[name.to_sym] = Capybara::Selector.new(name.to_sym, &block)
end

.all ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 165

def all
  @selectors ||= {} # rubocop:disable Naming/MemoizedInstanceVariableName
end

.remove(name) ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 177

def remove(name)
  all.delete(name.to_sym)
end

.update(name, &block) ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 173

def update(name, &block)
  all[name.to_sym].instance_eval(&block)
end

Instance Method Details

#call(locator, **options) ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 290

def call(locator, **options)
  if format
    @expression.call(locator, options)
  else
    warn "Selector has no format"
  end
end

#css(*expression_filters) {|locator, options| ... } ⇒ #call #css ⇒ #call

Define a selector by a CSS selector

Overloads:

  • #css(*expression_filters) {|locator, options| ... } ⇒ #call

    Parameters:

    • expression_filters (Array<Symbol>) —

      ([]) Names of filters that can be implemented via this CSS selector

    Yields:

    • (locator, options) —

      The block to use to generate the CSS selector

    Yield Parameters:

    • locator (String) —

      The locator string passed to the query

    • options (Hash) —

      The options hash passed to the query

    Yield Returns:

    • (#to_s) —

      An object that can produce a CSS selector

Returns:

  • (#call) —

    The block that will be called to generate the CSS selector



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# File 'lib/capybara/selector/selector.rb', line 245

def css(*allowed_filters, &block)
  if block
    @format, @expression = :css, block
    allowed_filters.flatten.each { |ef| expression_filters[ef] = nil }
  end
  format == :css ? @expression : nil
end

#custom_filters ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 196

def custom_filters
  warn "Deprecated: Selector#custom_filters is not valid when same named expression and node filter exist - don't use"
  node_filters.merge(expression_filters).freeze
end

#default_visibility(fallback = Capybara.ignore_hidden_elements) ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 374

def default_visibility(fallback = Capybara.ignore_hidden_elements)
  return @default_visibility unless @default_visibility.nil?
  fallback
end

#description(options) ⇒ String

Returns Description of the selector when used with the options passed.

Parameters:

  • options (Hash) —

    The options of the query used to generate the description

Returns:

  • (String) —

    Description of the selector when used with the options passed



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# File 'lib/capybara/selector/selector.rb', line 288

def_delegator :@filter_set, :description

#expression_filter(name, *types, options = {}, &block) ⇒ Object

Parameters:

  • name (Symbol, Regexp) —

    The filter name

  • matcher (Regexp) —

    (nil) A Regexp used to check whether a specific option is handled by this filter

  • types (Array<Symbol>) —

    The types of the filter - currently valid types are [:boolean]

  • options (Hash) (defaults to: {}) —

    ({}) Options of the filter

Options Hash (options):

  • :valid_values (Array<>) —

    Valid values for this filter

  • :default (Object) —

    The default value of the filter (if any)

  • :skip_if (Object) —

    Value of the filter that will cause it to be skipped

  • :matcher (Regexp) — default: nil —

    A Regexp used to check whether a specific option is handled by this filter. If not provided the filter will be used for options matching the filter name.



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# File 'lib/capybara/selector/selector.rb', line 349

def_delegators :@filter_set, :node_filter, :expression_filter, :filter

#expression_filters ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 205

def expression_filters
  @filter_set.expression_filters
end

#filter ⇒ Object

See #node_filter




# File 'lib/capybara/selector/selector.rb', line 328

#filter_set(name, filters_to_use = nil) ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 351

def filter_set(name, filters_to_use = nil)
  f_set = FilterSet.all[name]
  filter_selector = filters_to_use.nil? ? ->(*) { true } : ->(n, _) { filters_to_use.include? n }
  @filter_set.expression_filters.merge!(f_set.expression_filters.select(&filter_selector))
  @filter_set.node_filters.merge!(f_set.node_filters.select(&filter_selector))
  f_set.descriptions.each { |desc| @filter_set.describe(&desc) }
end

#label(label) ⇒ String #label ⇒ String

Set/get a descriptive label for the selector

Overloads:

  • #label(label) ⇒ String

    Parameters:

    • label (String) —

      A descriptive label for this selector - used in error messages

Returns:

  • (String) —

    The currently set label



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# File 'lib/capybara/selector/selector.rb', line 276

def label(label = nil)
  @label = label if label
  @label
end

#match {|locator| ... } ⇒ #call

Automatic selector detection

Yields:

  • (locator) —

    This block takes the passed in locator string and returns whether or not it matches the selector

Yield Parameters:

  • , (String) —

    locator The locator string used to determin if it matches the selector

Yield Returns:

  • (Boolean) —

    Whether this selector matches the locator string

Returns:

  • (#call) —

    The block that will be used to detect selector match



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# File 'lib/capybara/selector/selector.rb', line 262

def match(&block)
  @match = block if block
  @match
end

#match?(locator) ⇒ Boolean

Should this selector be used for the passed in locator

This is used by the automatic selector selection mechanism when no selector type is passed to a selector query

Parameters:

  • locator (String) —

    The locator passed to the query

Returns:

  • (Boolean) —

    Whether or not to use this selector



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# File 'lib/capybara/selector/selector.rb', line 307

def match?(locator)
  @match&.call(locator)
end

#node_filter(name, *types, options = {}, &block) ⇒ Object

Parameters:

  • name (Symbol, Regexp) —

    The filter name

  • types (Array<Symbol>) —

    The types of the filter - currently valid types are [:boolean]

  • options (Hash) (defaults to: {}) —

    ({}) Options of the filter

Options Hash (options):

  • :valid_values (Array<>) —

    Valid values for this filter

  • :default (Object) —

    The default value of the filter (if any)

  • :skip_if (Object) —

    Value of the filter that will cause it to be skipped

  • :matcher (Regexp) — default: nil —

    A Regexp used to check whether a specific option is handled by this filter. If not provided the filter will be used for options matching the filter name.




# File 'lib/capybara/selector/selector.rb', line 311

#node_filters ⇒ Object 



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# File 'lib/capybara/selector/selector.rb', line 201

def node_filters
  @filter_set.node_filters
end

#visible(default_visibility) ⇒ Object

Set the default visibility mode that shouble be used if no visibile option is passed when using the selector. If not specified will default to the behavior indicated by Capybara.ignore_hidden_elements

Parameters:

  • default_visibility (Symbol) —

    Only find elements with the specified visibility:

    • :all - finds visible and invisible elements.
    • :hidden - only finds invisible elements.
    • :visible - only finds visible elements.


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# File 'lib/capybara/selector/selector.rb', line 370

def visible(default_visibility)
  @default_visibility = default_visibility
end

#xpath(*expression_filters) {|locator, options| ... } ⇒ #call #xpath ⇒ #call

Define a selector by an xpath expression

Overloads:

  • #xpath(*expression_filters) {|locator, options| ... } ⇒ #call

    Parameters:

    • expression_filters (Array<Symbol>) —

      ([]) Names of filters that can be implemented via this expression

    Yields:

    • (locator, options) —

      The block to use to generate the XPath expression

    Yield Parameters:

    • locator (String) —

      The locator string passed to the query

    • options (Hash) —

      The options hash passed to the query

    Yield Returns:

    • (#to_xpath, #to_s) —

      An object that can produce an xpath expression

Returns:

  • (#call) —

    The block that will be called to generate the XPath expression



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# File 'lib/capybara/selector/selector.rb', line 223

def xpath(*allowed_filters, &block)
  if block
    @format, @expression = :xpath, block
    allowed_filters.flatten.each { |ef| expression_filters[ef] = Filters::IdentityExpressionFilter.new }
  end
  format == :xpath ? @expression : nil
end