require 'active_support/concern'
require 'active_support/core_ext/file'
require 'action_view/helpers/tag_helper'
require 'action_view/helpers/asset_tag_helpers/asset_include_tag'
module ActionView
module Helpers
module AssetTagHelper
class StylesheetIncludeTag < AssetIncludeTag
include TagHelper
def asset_name
'stylesheet'
end
def extension
'css'
end
def asset_tag(source, options)
tag("link", { "rel" => "stylesheet", "type" => Mime::CSS, "media" => "screen", "href" => ERB::Util.html_escape(path_to_asset(source)) }.merge(options), false, false)
end
def custom_dir
config.stylesheets_dir
end
end
module StylesheetTagHelpers
extend ActiveSupport::Concern
module ClassMethods
# Register one or more stylesheet files to be included when symbol
# is passed to stylesheet_link_tag. This method is typically intended
# to be called from plugin initialization to register stylesheet files
# that the plugin installed in public/stylesheets.
#
# ActionView::Helpers::AssetTagHelper.register_stylesheet_expansion :monkey => ["head", "body", "tail"]
#
# stylesheet_link_tag :monkey # =>
#
#
#
def register_stylesheet_expansion(expansions)
style_expansions = StylesheetIncludeTag.expansions
expansions.each do |key, values|
style_expansions[key] = (style_expansions[key] || []) | Array(values)
end
end
end
# Computes the path to a stylesheet asset in the public stylesheets directory.
# If the +source+ filename has no extension, .css will be appended (except for explicit URIs).
# Full paths from the document root will be passed through.
# Used internally by +stylesheet_link_tag+ to build the stylesheet path.
#
# ==== Examples
# stylesheet_path "style" # => /stylesheets/style.css
# stylesheet_path "dir/style.css" # => /stylesheets/dir/style.css
# stylesheet_path "/dir/style.css" # => /dir/style.css
# stylesheet_path "http://www.railsapplication.com/css/style" # => http://www.railsapplication.com/css/style
# stylesheet_path "http://www.railsapplication.com/css/style.css" # => http://www.railsapplication.com/css/style.css
def stylesheet_path(source)
if config.use_sprockets
sprockets_stylesheet_path(source)
else
asset_paths.compute_public_path(source, 'stylesheets', 'css')
end
end
alias_method :path_to_stylesheet, :stylesheet_path # aliased to avoid conflicts with a stylesheet_path named route
# Returns a stylesheet link tag for the sources specified as arguments. If
# you don't specify an extension, .css will be appended automatically.
# You can modify the link attributes by passing a hash as the last argument.
#
# ==== Examples
# stylesheet_link_tag "style" # =>
#
#
# stylesheet_link_tag "style.css" # =>
#
#
# stylesheet_link_tag "http://www.railsapplication.com/style.css" # =>
#
#
# stylesheet_link_tag "style", :media => "all" # =>
#
#
# stylesheet_link_tag "style", :media => "print" # =>
#
#
# stylesheet_link_tag "random.styles", "/css/stylish" # =>
#
#
#
# You can also include all styles in the stylesheets directory using :all as the source:
#
# stylesheet_link_tag :all # =>
#
#
#
#
# If you want Rails to search in all the subdirectories under stylesheets, you should explicitly set :recursive:
#
# stylesheet_link_tag :all, :recursive => true
#
# == Caching multiple stylesheets into one
#
# You can also cache multiple stylesheets into one file, which requires less HTTP connections and can better be
# compressed by gzip (leading to faster transfers). Caching will only happen if config.perform_caching
# is set to true (which is the case by default for the Rails production environment, but not for the development
# environment). Examples:
#
# ==== Examples
# stylesheet_link_tag :all, :cache => true # when config.perform_caching is false =>
#
#
#
#
# stylesheet_link_tag :all, :cache => true # when config.perform_caching is true =>
#
#
# stylesheet_link_tag "shop", "cart", "checkout", :cache => "payment" # when config.perform_caching is false =>
#
#
#
#
# stylesheet_link_tag "shop", "cart", "checkout", :cache => "payment" # when config.perform_caching is true =>
#
#
# The :recursive option is also available for caching:
#
# stylesheet_link_tag :all, :cache => true, :recursive => true
#
# To force concatenation (even in development mode) set :concat to true. This is useful if
# you have too many stylesheets for IE to load.
#
# stylesheet_link_tag :all, :concat => true
#
def stylesheet_link_tag(*sources)
if config.use_sprockets
sprockets_stylesheet_link_tag(*sources)
else
@stylesheet_include ||= StylesheetIncludeTag.new(config, asset_paths)
@stylesheet_include.include_tag(*sources)
end
end
end
end
end
end