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# frozen_string_literal: true
module TabHelper
# Navigation link helper
#
# Returns an `li` element with an 'active' class if the supplied
# controller(s) and/or action(s) are currently active. The content of the
# element is the value passed to the block.
#
# options - The options hash used to determine if the element is "active" (default: {})
# :controller - One or more controller names to check, use path notation when namespaced (optional).
# :action - One or more action names to check (optional).
# :path - A shorthand path, such as 'dashboard#index', to check (optional).
# :html_options - Extra options to be passed to the list element (optional).
# :unless - Callable object to skip rendering the 'active' class on `li` element (optional).
# block - An optional block that will become the contents of the returned
# `li` element.
#
# When both :controller and :action are specified, BOTH must match in order
# to be marked as active. When only one is given, either can match.
#
# Examples
#
# # Assuming we're on TreeController#show
#
# # Controller matches, but action doesn't
# nav_link(controller: [:tree, :refs], action: :edit) { "Hello" }
# # => '<li>Hello</li>'
#
# # Controller matches
# nav_link(controller: [:tree, :refs]) { "Hello" }
# # => '<li class="active">Hello</li>'
#
# # Several paths
# nav_link(path: ['tree#show', 'profile#show']) { "Hello" }
# # => '<li class="active">Hello</li>'
#
# # Shorthand path
# nav_link(path: 'tree#show') { "Hello" }
# # => '<li class="active">Hello</li>'
#
# # Supplying custom options for the list element
# nav_link(controller: :tree, html_options: {class: 'home'}) { "Hello" }
# # => '<li class="home active">Hello</li>'
#
# # For namespaced controllers like Admin::AppearancesController#show
#
# # Controller and namespace matches
# nav_link(controller: 'admin/appearances') { "Hello" }
# # => '<li class="active">Hello</li>'
#
# # Controller and namespace matches but action doesn't
# nav_link(controller: 'admin/appearances', action: :edit) { "Hello" }
# # => '<li>Hello</li>'
#
# # Shorthand path with namespace
# nav_link(path: 'admin/appearances#show') { "Hello"}
# # => '<li class="active">Hello</li>'
#
# # Shorthand path + unless
# # Add `active` class when TreeController is requested, except the `index` action.
# nav_link(controller: 'tree', unless: -> { action_name?('index') }) { "Hello" }
# # => '<li class="active">Hello</li>'
#
# # When `TreeController#index` is requested
# # => '<li>Hello</li>'
#
# # Paths, controller and actions can be used at the same time
# nav_link(path: 'tree#show', controller: 'admin/appearances') { "Hello" }
#
# nav_link(path: 'foo#bar', controller: 'tree') { "Hello" }
# nav_link(path: 'foo#bar', controller: 'tree', action: 'show') { "Hello" }
# nav_link(path: 'foo#bar', action: 'show') { "Hello" }
#
# Returns a list item element String
def nav_link(options = {}, &block)
klass = active_nav_link?(options) ? 'active' : ''
# Add our custom class into the html_options, which may or may not exist
# and which may or may not already have a :class key
o = options.delete(:html_options) || {}
o[:class] = [*o[:class], klass].join(' ')
o[:class].strip!
if block_given?
content_tag(:li, capture(&block), o)
else
content_tag(:li, nil, o)
end
end
def active_nav_link?(options)
return false if options[:unless]&.call
controller = options.delete(:controller)
action = options.delete(:action)
route_matches_paths?(options.delete(:path)) ||
route_matches_pages?(options.delete(:page)) ||
route_matches_controllers_and_or_actions?(controller, action)
end
def current_path?(path)
c, a, _ = path.split('#')
current_controller?(c) && current_action?(a)
end
def branches_tab_class
if current_controller?(:protected_branches) ||
current_controller?(:branches) ||
current_page?(project_repository_path(@project))
'active'
end
end
private
def route_matches_paths?(paths)
Array(paths).compact.any? do |single_path|
current_path?(single_path)
end
end
def route_matches_pages?(pages)
Array(pages).compact.any? do |single_page|
current_page?(single_page)
end
end
def route_matches_controllers_and_or_actions?(controller, action)
if controller && action
current_controller?(*controller) && current_action?(*action)
else
current_controller?(*controller) || current_action?(*action)
end
end
end
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