Noosfero/noosfero

class PjaxPlugin < Noosfero::Plugin
  def self.plugin_name
    _("Pjax plugin")
  end

  def self.plugin_description
    _("Use pjax for page's links")
  end

  def stylesheet?
    true
  end

  def js_files
    ["jquery.pjax.js", "patchwork.js", "loading-overlay", "pjax",].map { |j| "javascripts/#{j}" }
  end

  def head_ending
    # TODO: add pjax meta
  end

  def body_beginning
    lambda { render "pjax_layouts/load_state_script" }
  end

  PjaxCheck = lambda do
    return unless request.headers["X-PJAX"]
    # raise makes pjax fallback to a regular request
    raise "Pjax can't be used here" if params[:controller] == "account"

    @pjax = true
    @pjax_loaded_themes = request.headers["X-PJAX-Themes"].to_s.split(",") || []

    unless self.respond_to? :get_layout_with_pjax
      self.class.send :define_method, :get_layout_with_pjax do
        if @pjax then "pjax" else get_layout_without_pjax end
      end
      self.class.alias_method :get_layout, :pjax
    end
  end

  def application_controller_filters
    [{
      type: "before_action", method_name: "pjax_check",
      options: {}, block: PjaxCheck,
    }]
  end

  protected
end