From 91b0b6583428edaec1507c8dbfccfb2056bdedb4 Mon Sep 17 00:00:00 2001 From: Josh Kalderimis Date: Sun, 14 Nov 2010 16:14:26 +0100 Subject: split the javascript and stylesheet tag helpers into separate files as a precusor before removing the duplication between the two --- .../asset_tag_helpers/stylesheet_tag_helpers.rb | 164 +++++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb (limited to 'actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb') diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb new file mode 100644 index 0000000000..6ae4792b70 --- /dev/null +++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb @@ -0,0 +1,164 @@ +module ActionView + module Helpers + module AssetTagHelper + module StylesheetTagHelpers + extend ActiveSupport::Concern + + included do + mattr_accessor :stylesheet_expansions + self.stylesheet_expansions = { } + end + + 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) + self.stylesheet_expansions.merge!(expansions) + 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) + compute_public_path(source, 'stylesheets', 'css') + 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) + options = sources.extract_options!.stringify_keys + concat = options.delete("concat") + cache = concat || options.delete("cache") + recursive = options.delete("recursive") + + if concat || (config.perform_caching && cache) + joined_stylesheet_name = (cache == true ? "all" : cache) + ".css" + joined_stylesheet_path = File.join(joined_stylesheet_name[/^#{File::SEPARATOR}/] ? config.assets_dir : config.stylesheets_dir, joined_stylesheet_name) + + unless config.perform_caching && File.exists?(joined_stylesheet_path) + write_asset_file_contents(joined_stylesheet_path, compute_stylesheet_paths(sources, recursive)) + end + stylesheet_tag(joined_stylesheet_name, options) + else + sources = expand_stylesheet_sources(sources, recursive) + ensure_stylesheet_sources!(sources) if cache + sources.collect { |source| stylesheet_tag(source, options) }.join("\n").html_safe + end + end + + private + + def stylesheet_tag(source, options) + tag("link", { "rel" => "stylesheet", "type" => Mime::CSS, "media" => "screen", "href" => ERB::Util.html_escape(path_to_stylesheet(source)) }.merge(options), false, false) + end + + def compute_stylesheet_paths(*args) + expand_stylesheet_sources(*args).collect { |source| compute_public_path(source, 'stylesheets', 'css', false) } + end + + def expand_stylesheet_sources(sources, recursive) + if sources.first == :all + collect_asset_files(config.stylesheets_dir, ('**' if recursive), '*.css') + else + sources.collect do |source| + determine_source(source, self.stylesheet_expansions) + end.flatten + end + end + + def ensure_stylesheet_sources!(sources) + sources.each do |source| + asset_file_path!(path_to_stylesheet(source)) + end + return sources + end + + end + end + end +end \ No newline at end of file -- cgit v1.2.3