+++ /dev/null
-# RequireResource v.1.4 by Duane Johnson
-#
-# Makes inclusion of javascript and stylesheet resources easier via automatic or explicit
-# calls. e.g. require_javascript 'popup' is an explicit call.
-#
-# The simplest way to make use of this functionality is to add
-# <%= resource_tags %>
-# to your layout (usually in the <head></head> section). This will automatically add
-# bundle support to your application, as well as enable simple javascript and stylesheet
-# dependencies for your views.
-#
-# Note that this can easily be turned in to a helper on its own.
-module RequireResource
- mattr_accessor :path_prefix
-
- # Write out all javascripts & stylesheets, including default javascripts (unless :defaults => false)
- def resource_tags(options = {})
- options = {:auto => true, :defaults => true}.update(options)
- require_defaults if options[:defaults]
- stylesheet_auto_link_tags(:auto => options[:auto]) +
- javascript_auto_include_tags(:auto => options[:auto])
- end
-
- # Write out the <link> tags themselves based on the array of stylesheets to be included
- def stylesheet_auto_link_tags(options = {})
- options = {:auto => true}.update(options)
- ensure_resource_is_initialized(:stylesheet)
- autorequire(:stylesheet) if options[:auto]
- @stylesheets.uniq.inject("") do |buffer, css|
- buffer << stylesheet_link_tag(css) + "\n "
- end
- end
-
- # Write out the <script> tags themselves based on the array of javascripts to be included
- def javascript_auto_include_tags(options = {})
- options = {:auto => true}.update(options)
- ensure_resource_is_initialized(:javascript)
- autorequire(:javascript) if options[:auto]
- @javascripts.uniq.inject("") do |buffer, js|
- buffer << javascript_include_tag(js) + "\n "
- end
- end
-
- # Bundle the defaults together for easy inclusion
- def require_defaults
- require_javascript(:prototype)
- require_javascript(:controls)
- require_javascript(:effects)
- require_javascript(:dragdrop)
- end
-
- # Adds a javascript to the array of javascripts that will be included in the layout by
- # either your call to 'javascript_auto_include_tags' or 'resource_tags'.
- def require_javascript(*scripts)
- scripts.each do |script|
- require_resource(:javascript, RequireResource.path_prefix.to_s + script.to_s)
- end
- end
-
- # Adds a stylesheet to the array of stylesheets that will be included in the layout by
- # either your call to 'stylesheet_auto_link_tags' or 'resource_tags'.
- def require_stylesheet(*sheets)
- sheets.each do |sheet|
- require_resource(:stylesheet, RequireResource.path_prefix.to_s + sheet.to_s)
- end
- end
-
- # Changes the RequireResource.path_prefix within the scope of a block. This is
- # particularly useful when requiring several resources within a directory. For example,
- # bundles can take advantage of this by calling
- # require_relative_to Engines.current.public_dir do
- # require_javascript '...'
- # require_stylesheet '...'
- # # ...
- # end
- def require_relative_to(path)
- former_prefix = RequireResource.path_prefix
- RequireResource.path_prefix = path
- yield
- RequireResource.path_prefix = former_prefix
- end
-
- protected
- # Adds resources such as stylesheet or javascript files to the corresponding array of
- # resources that will be 'required' by the layout. The +resource_type+ is either
- # :javascript or :stylesheet. The +extension+ is optional, and should normally correspond
- # with the resource type, e.g. 'css' for :stylesheet and 'js' for :javascript.
- def autorequire(resource_type, extension = nil)
- extensions = {:stylesheet => 'css', :javascript => 'js'}
- extension ||= extensions[resource_type]
- candidates = []
- class_iterator = controller.class
- resource_path = "#{RAILS_ROOT}/public/#{resource_type.to_s.pluralize}/"
-
- while ![ActionController::Base].include? class_iterator
- controller_path = class_iterator.to_s.underscore.sub('controllers/', '').sub('_controller', '')
- candidates |= [ "#{controller_path}", "#{controller_path}/#{controller.action_name}" ]
- class_iterator = class_iterator.superclass
- end
-
- for candidate in candidates
- if FileTest.exist?("#{resource_path}/#{candidate}.#{extension}")
- require_resource(resource_type, candidate)
- end
- end
- end
-
- # Adds a resource (e.g. a javascript) to the appropriate array (e.g. @javascripts)
- # ONLY if the resource is not already included.
- def require_resource(type, name)
- variable = type.to_s.pluralize
- new_resource_array = (instance_variable_get("@#{variable}") || []) | [name.to_s]
- instance_variable_set("@#{variable}", new_resource_array)
- end
-
- # Ensures that a resource array (e.g. @javascripts) is not nil--uses [] if so
- def ensure_resource_is_initialized(type)
- variable = type.to_s.pluralize
- new_resource_array = (instance_variable_get("@#{variable}") || [])
- instance_variable_set("@#{variable}", new_resource_array)
- end
-end
-
-ActionView::Base.send(:include, RequireResource)
projects / selectricity-live / blobdiff