Composite__

Purpose

To treat a group of objects the same way as a single instance of the object.

Examples

• a form class instance handles all its form elements like a single instance of the form, when render() is called, it subsequently runs through all its child elements and calls render() on them

UML Diagram

.. image:: uml/uml.png :alt: Alt Composite UML Diagram :align: center

Code

You can also find this code on GitHub_

Renderable.php

.. literalinclude:: Renderable.php :language: php :linenos:

Form.php

.. literalinclude:: Form.php :language: php :linenos:

InputElement.php

.. literalinclude:: InputElement.php :language: php :linenos:

TextElement.php

.. literalinclude:: TextElement.php :language: php :linenos:

Test

Tests/CompositeTest.php

.. literalinclude:: Tests/CompositeTest.php :language: php :linenos:

.. _GitHub: https://github.com/DesignPatternsPHP/DesignPatternsPHP/tree/main/Structural/Composite .. __: http://en.wikipedia.org/wiki/Composite_pattern