- Some helpers for the body attributes

- Move the blueprint reference content to the blueprint tutorial
- Made new blueprint reference content that is actually reference
  content.
- Some basic helpers for accessing a sass stylesheet and extracting info
  from it.

doc-src/content/reference/blueprint.haml

@@ -0,0 +1,14 @@
+%h1= item[:title]
+
+%p
+  The blueprint module is a simple way of importing all of the most
+  commonly used blueprint modules. In addition, it provides
+  a single mixin, <code class="mixin">+blueprint</code>, that
+  can be used to generate the blueprint css styles.
+
+%h2 Imports
+
+%ol
+  - imports(@item).each do |import|
+    %li= import
+

doc-src/content/reference/blueprint.yaml

@@ -0,0 +1,6 @@
+--- 
+title: Blueprint Module
+framework: blueprint
+stylesheet: _blueprint.sass
+classnames:
+  - reference

doc-src/content/tutorials/blueprint.haml

@@ -0,0 +1,68 @@
+%h1= item[:title]
+
+%h2#semantic-blueprint Semantic Blueprint Template
+
+%p
+  The semantic template assumes that you will write your own selectors
+  and apply the blueprint mixins to them to achieve a design that does
+  not use any presentational classes. This is the preferred approach for
+  using Blueprint with compass, but if you want a more traditional
+  approach, consider the <a href="#basic-blueprint">Basic
+  Blueprint Template</a>.
+
+%h2 Getting Started with Semantic Blueprint
+
+%p
+  Once you get Compass installed, you are ready to create a new
+  blueprint project. In your terminal enter the following commands:
+
+  %code.shell
+    %pre
+      %span.prompt<> $&nbsp;
+      compass create my_project --using blueprint/semantic
+      %br>
+      %span.prompt<> $&nbsp;
+      cd my_project
+
+%hr
+
+%h2#basic-blueprint Basic Blueprint Template
+
+%p
+  The basic template is the starting point for working with blueprint
+  in compass. It can be used to generate CSS that is virtually identical
+  to the Blueprint CSS. If all you want is an easy way to customize the
+  grid or typography, you’ll be using these libraries. Since the basic
+  library is built on top of the blueprint modules, customization will
+  require that you refer to the particular module you want to customize.
+
+%p
+  If you want to get started with the Basic Template because it feels
+  more familiar to you, that's fine. It's very easy to transition to
+  <a href="#semantic-blueprint">semantic selectors</a> when you're ready.
+  
+
+%h2 Getting Started with Basic Blueprint
+
+%p
+  Once you get Compass installed, you are ready to create a new
+  blueprint project. In your terminal enter the following commands:
+  
+  %code.shell
+    %pre
+      %span.prompt<> $&nbsp;
+      compass create my_project --using blueprint/basic
+
+%h2 Blueprint Plugins
+
+%p
+  The core blueprint plugins are available, but must be installed
+  into your project. Follow the instructions below:
+
+%ul
+  %li
+    %a(href="#") Blueprint Buttons
+  %li
+    %a(href="#") Blueprint Link Icons
+
+

doc-src/content/tutorials/blueprint.yaml

@@ -0,0 +1,4 @@
+--- 
+title: Blueprint Framework
+classnames:
+  - tutorial

doc-src/layouts/default.haml

@@ -5,7 +5,7 @@
       #{@item[:title]} - Compass
     %meta{ :content => "text/html; charset=utf-8", "http-equiv" => "Content-Type" }
     %link{ :href => "/stylesheets/main.css", :rel => "stylesheet", :type => "text/css", :media => "screen" }
-  %body
+  %body{body_attributes(@item)}
     #container
       #main
         = yield

doc-src/lib/default.rb

@@ -1,4 +1,19 @@
 # All files in the 'lib' directory will be loaded
 # before nanoc starts compiling.
 
-include Nanoc3::Helpers::LinkTo
+include Nanoc3::Helpers::LinkTo
+
+def body_class(item)
+  (item[:classnames] || []).join(" ")
+end
+
+def body_id(item)
+  item.identifier.chop[1..-1].gsub(/\/|_/, "-")
+end
+
+def body_attributes(item)
+  {
+    :id => body_id(item),
+    :class => body_class(item)
+  }
+end

doc-src/lib/stylesheets.rb

@@ -0,0 +1,28 @@
+
+def stylesheets_dir(framework)
+  Compass::Frameworks[framework].stylesheets_directory
+end
+
+def stylesheet_key(item)
+  [item[:framework], item[:stylesheet]].join("/")
+end
+
+def tree(item)
+  @stylesheets ||= {}
+  @stylesheets[stylesheet_key(item)] ||= begin
+    file = File.join(stylesheets_dir(item[:framework]), item[:stylesheet])
+    contents = File.read(file)
+    Sass::Engine.new(contents).send :to_tree
+  end
+end
+
+def imports(item)
+  sass_tree = tree(item)
+  imports = []
+  sass_tree.children.each do |child|
+    if child.is_a?(Sass::Tree::ImportNode)
+      imports << child.imported_filename
+    end
+  end
+  imports
+end

doc-src/lib/stylesheets/sass_extensions.rb

@@ -0,0 +1,14 @@
+module Sass
+  module Tree
+    class VariableNode < Node
+      attr_accessor :name unless method_defined? :name
+    end
+    class MixinDefNode < Node
+      attr_accessor :name unless method_defined? :name
+      attr_accessor :args unless method_defined? :args
+    end
+    class ImportNode < Node
+      attr_accessor :imported_filename unless method_defined? :imported_filename
+    end
+  end
+end