Class: Nitro::Element

Inherits:

Object

• Object
• Nitro::Element

Includes:

ElementMixin

Defined in:

lib/nitro/element.rb,
lib/nitro/element/javascript.rb

Overview

A programmatically generated element.

Usage

in the code

class Page < Nitro::Element

def render
  %{
  <div id="@id">#{content}</div>
  }
end

end

in your template

<Page>hello</Page>

> <div id=“page”>hello</div>

the id is automatically fille with the class name using class.method_name eg. MyModule::MyPage => my_module__my_page

you can override the id to use the element multiple times on the page

Sub Elements

Elements can be imbricated. To render the the child element in the parent’s template, use #:element_id

Design

An underscore is used for the standard attibutes to avoid name clashes. – TODO:

• separate ‘view’ template files.

++

Direct Known Subclasses

Control

Defined Under Namespace

Classes: Javascript

Instance Attribute Summary

Attributes included from ElementMixin

#_children, #_parent, #_text, #_view, #id

Class Method Summary

• .compile_template_elements ⇒ Object

  Compile the element templates into element classes.

Methods included from ElementMixin

#add_child, #close, #content, #initialize, #open, #render, #render_children

Class Method Details

.compile_template_elements ⇒ Object

Compile the element templates into element classes. Typically called at startup.

# File 'lib/nitro/element.rb', line 221

def compile_template_elements
  if File.exist? Element.template_root
    Dir.recurse(Element.template_root) do |filename| 
      if filename =~ /\.#{Nitro::Template.extension}$/
        name = File.basename(filename).split('.').first.camelize
        Nitro::Element.module_eval %{
          class #{name} < Nitro::Element
            def render
              <<-END_OF_TEMPLATE
              #{File.read(filename)}
              END_OF_TEMPLATE
            end
          end
        }
      end
    end         
  end
end