Module: Roda::RodaPlugins::Component::InstanceMethods

Defined in:
lib/roda/plugins/component.rb

Instance Method Summary collapse

Instance Method Details

#component(name, options = {}, &block) ⇒ Object Also known as: comp, roda_component 



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# File 'lib/roda/plugins/component.rb', line 145

def component name, options = {}, &block
  action        = options.delete(:call)
  trigger       = options.delete(:trigger)
  js            = options.delete(:js)
  args          = options.delete(:args)

  action = :display if js && !action

  comp = load_component name, options

  # call action
  # TODO: make sure the single method parameter isn't a block
  if trigger
    if args
      comp_response = comp.trigger trigger, *args
    else
      comp_response = comp.trigger trigger, options
    end
  elsif action
    # We want to make sure it's not a method that already exists in ruba
    # otherwise that would give us a false positive.
    if comp.respond_to?(action) && !"#{comp.method(action)}"[/\(Kernel\)/]
      if comp.method(action).parameters.length > 0
        if args
          comp_response = comp.send(action, *args, &block)
        else
          comp_response = comp.send(action, options, &block)
        end
      else
        comp_response = comp.send(action, &block)
      end
    else
      fail "##{action} doesn't exist for #{comp.class}"
    end
  end

  if trigger || action
    load_component_js comp, action, options

    if js && comp_response.is_a?(Roda::Component::DOM)
      comp_response = comp_response.to_html
    end

    comp_response = '' if js && !comp_response.is_a?(String)

    if comp_response.is_a?(String) && js
      comp_response << component_js
    end

    comp_response
  else
    comp
  end
end

#component_js ⇒ Object 



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# File 'lib/roda/plugins/component.rb', line 202

def component_js
  loaded_component_js.join(' ').to_s
end

#component_opts ⇒ Object 



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# File 'lib/roda/plugins/component.rb', line 62

def component_opts
  @_component_opts || self.class.component_opts.dup
end

#load_component(name, options = {}) ⇒ Object 



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# File 'lib/roda/plugins/component.rb', line 70

def load_component name, options = {}
  c = Object.const_get(
    component_opts[:class_name][name.to_s]
  )

  c.new self, options
end

#load_component_js(comp, action = false, options = {}) ⇒ Object 



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# File 'lib/roda/plugins/component.rb', line 78

def load_component_js comp, action = false, options = {}
  if comp.is_a? Roda::Component
    comp.class.comp_requires.each do |c|
      load_component_js(load_component(c), false, js: true)
    end
  end

  # grab a copy of the cache
  cache = comp.cache.dup
  # remove html and dom cache as we don't need that for the client
  cache.delete :html
  cache.delete :dom
  cache.delete :cache

  cache      = Base64.encode64 cache.to_json
  options    = Base64.encode64 options.to_json
  comp_name  = comp.class._name
  class_name = Base64.encode64 component_opts[:class_name].to_json

  file_path = comp.class.file_location.gsub("#{Dir.pwd}/#{component_opts[:path]}", '').gsub(/\.rb\Z/, '.js')

  js = <<-EOF
    action = '#{action || 'false'}'

    unless $faye
      $faye = Roda::Component::Faye.new('/faye')
    end

    unless $component_opts[:class_name]
      $component_opts[:class_name] = JSON.parse(Base64.decode64('#{class_name}'))
    end

    if !$component_opts[:comp][:"#{comp_name}"]
      $component_opts[:faye] ||= {}
      $component_opts[:comp][:"#{comp_name}"] = {cache: {}}
      `jQuery.ajaxSetup({ cache: true })`
      `$.getScript("/#{component_opts[:assets_route]}#{file_path}").done(function(){`
        if action != 'false'
          c = $component_opts[:comp][:"#{comp_name}"][:class] = #{comp.class}.new
        else
          c = $component_opts[:comp][:"#{comp_name}"][:class] = #{comp.class}.new(JSON.parse(Base64.decode64('#{options}')))
        end
        c.instance_variable_set(:@_cache, ($component_opts[:comp][:"#{comp_name}"][:cache] = JSON.parse(Base64.decode64('#{cache}'))))

        Document.ready? do
          c.events.trigger_jquery_events
          c.#{action}(JSON.parse(Base64.decode64('#{options}'))) if !(c.class._on_server_methods || []).include?('#{action}') && action != 'false'
        end

        Document.on 'page:load' do
          c.#{action}(JSON.parse(Base64.decode64('#{options}'))) if !(c.class._on_server_methods || []).include?('#{action}') && action != 'false'
        end
      `}).fail(function(jqxhr, settings, exception){ window.console.log(exception); });`
    elsif $component_opts[:comp][:"#{comp_name}"] && $component_opts[:comp][:"#{comp_name}"][:class]
      if action != 'false'
        c = $component_opts[:comp][:"#{comp_name}"][:class] = #{comp.class}.new
      else
        c = $component_opts[:comp][:"#{comp_name}"][:class] = #{comp.class}.new(JSON.parse(Base64.decode64('#{options}')))
      end
      c.instance_variable_set(:@_cache, $component_opts[:comp][:"#{comp_name}"][:cache])
      c.#{action}(JSON.parse(Base64.decode64('#{options}'))) if !(c.class._on_server_methods || []).include?('#{action}') && action != 'false'
    end
  EOF

  loaded_component_js << ("<script>#{Opal.compile(js)}</script>")
end

#loaded_component_js ⇒ Object 



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# File 'lib/roda/plugins/component.rb', line 66

def loaded_component_js
  request ? (request.env['loaded_component_js'] ||= []) : (@_loaded_component_js ||= [])
end