component.puml

' Begin duplicate inclusion protection header.
!if %true() != $CLASSY_C4_COMPONENT_PUML
!$CLASSY_C4_COMPONENT_PUML = %true()
' End duplicate inclusion protection header.

' Defines a class that wraps the C4 Component function.
!include <C4/C4_Component>
!include <classy/types/element-renderer>
!include <classy/types/technical-descriptor>
!include <classy-c4/externalizable-element>

$class(Component)
  $classImplements(ElementRenderer)
  $classImplements(ExternalizableElement, 'externalizer')
  $classImplements(TechnicalDescriptor, 'tech')

  ' Constructor that first calls our parent Element Renderer constructor then
  ' sets an Element Renderer callback.
  !function Component($this)
    !$parent = $getInstanceVar($this, 'parent')
    ElementRenderer($parent)

    !$cbElement = $new('Callback')
    $call($cbElement, 'setContext', $this)
    $call($cbElement, 'setMethod', 'Component__renderElement')

    $call($this, 'setElementRendererCallback', $cbElement)

    !return $this
  !endfunction

  ' This method is an Element Renderer callback. We determine the relevant name,
  ' technology, and description values to submit to the C4 Component function as
  ' well as if we should render it standard or as an external Component.
  !procedure Component__renderElement($this, $alias)
    !$name = $call($this, 'getName')
    !$desc = $call($this, 'getDescription')
    !$tech = $call($this, 'getTechnology')

    !if '' == $tech
      !$tech = 'N/A'
    !endif

    !if $call($this, 'isExternal')
      Component_Ext($alias, $name, $tech, $desc)
    !else
      Component($alias, $name, $tech, $desc)
    !endif
  !endprocedure
$endclass(Component)

' Terminate duplicate inclusion enclosure.
!endif