Module: Pakyow::Presenter::Renderer::Behavior::RenderComponents Private

Extended by:
Support::Extension
Defined in:
lib/pakyow/presenter/renderer/behavior/render_components.rb

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Class Method Summary collapse

Class Method Details

.find_compound_presenter(app, component_classes) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/pakyow/presenter/renderer/behavior/render_components.rb', line 194

def self.find_compound_presenter(app, component_classes)
  compound_name = component_classes.map { |component_class|
    component_class.__object_name.name.to_s
  }.join("_")

  object_name = Support::ObjectName.namespace(
    app.class.__object_name.namespace.parts[0], :components, compound_name, :presenter
  )

  if const_defined?(object_name.constant)
    const_get(object_name.constant)
  else
    nil
  end
end

.find_or_build_compound_presenter(app, component_classes) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/pakyow/presenter/renderer/behavior/render_components.rb', line 212

def self.find_or_build_compound_presenter(app, component_classes)
  compound_name = component_classes.map { |component_class|
    component_class.__object_name.name.to_s
  }.join("_")

  object_name = Support::ObjectName.namespace(
    app.class.__object_name.namespace.parts[0], :components, compound_name, :presenter
  )

  if const_defined?(object_name.constant)
    const_get(object_name.constant)
  else
    component_presenter = Class.new(app.isolated(:Presenter))
    Support::ObjectMaker.define_const_for_object_with_name(component_presenter, object_name)

    component_classes.each do |component_class|
      # Copy unique attached renders.
      #
      component_class.__presenter_class.__attached_renders.each_with_index do |attached_render, i|
        component_presenter.__attached_renders.insert(i, {
          binding_path: attached_render[:binding_path],
          channel: attached_render[:channel],
          node: attached_render[:node],
          priority: attached_render[:priority],
          block: wrap_block(attached_render[:block], component_class),
        })
      end

      # Copy unique global options.
      #
      component_class.__presenter_class.__global_options.each do |form_binding, field_binding_values|
        field_binding_values.each do |field_binding, field_binding_value|
          component_presenter.options_for(
            form_binding,
            field_binding,
            field_binding_value[:options],
            &wrap_block(field_binding_value[:block], component_class)
          )
        end
      end

      # Copy unique presentation logic.
      #
      component_class.__presenter_class.__presentation_logic.each do |binding_name, logic_arr|
        unless component_presenter.__presentation_logic.include?(binding_name)
          component_presenter.__presentation_logic[binding_name] = []
        end

        logic_arr.each_with_index do |logic, i|
          component_presenter.__presentation_logic[binding_name].insert(i, {
            block: wrap_block(logic[:block], component_class),
            channel: logic[:channel]
          })
        end
      end

      # Copy unique versioning logic.
      #
      component_class.__presenter_class.__versioning_logic.each do |binding_name, logic_arr|
        unless component_presenter.__versioning_logic.include?(binding_name)
          component_presenter.__versioning_logic[binding_name] = []
        end

        logic_arr.each_with_index do |logic, i|
          component_presenter.__versioning_logic[binding_name].insert(i, {
            block: wrap_block(logic[:block], component_class)
          })
        end
      end
    end

    component_presenter
  end
end

.find_renderable_components(view, components = []) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/pakyow/presenter/renderer/behavior/render_components.rb', line 172

def self.find_renderable_components(view, components = [])
  view.components.each do |component_view|
    find_renderable_components(component_view, components)

    if component_view.object.label(:components).any? { |c| c[:renderable] }
      components << component_view
    end
  end

  components
end

.initialize_renderable_components(view, app:, composer:, modes:, path: []) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/pakyow/presenter/renderer/behavior/render_components.rb', line 50

def self.initialize_renderable_components(view, app:, composer:, modes:, path: [])
  view.components.each_with_index do |component_view, i|
    current_path = path.dup
    current_path << i

    # If view will be rendered from the app, look for the component on the app.
    #
    component_state = if app.is_a?(Plugin) && app.parent.view?(composer.view_path)
      app.parent.state(:component)
    else
      app.state(:component)
    end

    components = component_view.object.label(:components).each_with_object([]) { |component_label, arr|
      component_class = component_state.find { |component|
        component.__object_name.name == component_label[:name]
      }

      if component_class
        # Turn the component into a renderable component. Once an instance is attached on the
        # backend, the component will not be traversed by renders from its parent instead being
        # rendered by its own renderer instance.
        #
        # We don't want the same restriction for non-renderable components because a change to
        # the view should not affect how things work on the backend.
        #
        component_label[:renderable] = true

        arr << {
          class: component_class,
          config: component_label[:config]
        }
      end
    }

    if components.any?
      # Since one or more attached components is renderable, we no longer want to descend.
      #
      component_view.object.set_label(:descend, false)

      # Define the render function that calls the component and renders it at render time.
      #
      component_render = app.isolated(:Presenter).send(:render_proc, component_view) { |node, _context, string|
        presentable_component_connection = presentables[:__component_connection]
        component_connection = presentable_component_connection.dup

        components.each do |component|
          presentables.each do |key, value|
            if key.to_s.start_with?("__")
              component_connection.set(key, value)
            end
          end

          # If the component was defined in an app but being called inside a plugin, set the app to the app instead of the plugin.
          #
          if component_connection.app.is_a?(Plugin) && component[:class].ancestors.include?(component_connection.app.parent.isolated(:Component))
            component_connection = component_connection.class.from_connection(component_connection, :@app => component_connection.app.parent)
          end

          unless component[:class].inherit_values == true
            component_connection.values.each_key do |key|
              unless key.to_s.start_with?("__") || (component[:class].inherit_values && component[:class].inherit_values.include?(key))
                component_connection.values.delete(key)
              end
            end
          end

          component_instance = component[:class].new(
            connection: component_connection,
            config: component[:config]
          )

          # Call the component.
          #
          component_instance.perform
        end

        # Build a compound component presenter.
        #
        component_presenter = if components.length > 1
          RenderComponents.find_compound_presenter(
            app, components.map { |c| c[:class] }
          )
        else
          components.first[:class].__presenter_class
        end

        # Setup the renderer for the component.
        #
        renderer = app.isolated(:Renderer).new(
          app: app,
          presentables: component_connection.values,
          presenter_class: component_presenter,
          composer: Composers::Component.new(
            composer.view_path, current_path, app: app, labels: node.labels
          ),
          modes: modes
        )

        # Render to the main buffer.
        #
        renderer.perform(string)

        # Return nil so nothing else gets written.
        #
        nil
      }

      # Attach the above render function to the render node.
      #
      component_view.object.transform do |node, context, string|
        component_render.call(node, context, string); nil
      end
    else
      initialize_renderable_components(
        component_view, app: app, composer: composer, modes: modes, path: current_path
      )
    end
  end
end

.wrap_block(block, context_class) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/pakyow/presenter/renderer/behavior/render_components.rb', line 185

def self.wrap_block(block, context_class)
  Proc.new do
    @app.presenter_for_context(
      context_class.__presenter_class, self
    ).instance_eval(&block)
  end
end