/34535288/bridge-pattern-double-bridge

<?php // http://stackoverflow.com/questions/34535288/bridge-pattern-double-bridge

// I need to draw a shape depending on the shape type, the colour and the wall where is going to be painted on.
// There are two shapes: Rectangle and Circle There are two colours: Red and Blue There are two walls: Wood wall and Concrete wall

/*
 * Need the Painter Factory...
 */
$factory = new PainterFactory();

/*
 * Create a 'Painter'
 */
$painter = $factory->make('Concrete', 'Rectangle', 'Blue');

/*
 * Get the painter to do the action...
 */
echo '<pre>';
echo $painter->paint();
echo '</pre>';

exit;

/* ---------------------------------------------------------------------------
 *  This makes 'Painters'. It tells a 'Painter' what Wall to paint with a Shape.
 *
 *  It may have to do checks.
 *
 *  This version doesn't.
 */
class PainterFactory {

    public function make($wallMaterial, $shapeName, $shapeColor)
    {
        $wall   = new Wall($wallMaterial);
        $shape  = new Shape($shapeName, $shapeColor);
        return new Painter($wall, $shape);
    }
}

/* ---------------------------------------------------------------------------
 * This is the thing which does the action of 'paint' the 'Wall' with the 'Shape'.
 *
 * It knows where to find the 'Wall'. It knows that the 'Shape' is to be sprayed on
 * the 'Wall'.
 *
 *   o It does not know about what the Wall is made of.
 *   o It does not know what the Shape is or the color.
 *
 *  It doesn't care.
 */
class Painter {

    protected $wall   = null;
    protected $shape  = null;

    public function __construct($wall, $shape)
    {
        $this->wall  = $wall;
        $this->shape = $shape;
    }

    public function __get($property)
    {
        return $this->$property;
    }

    public function paint()
    {
        return 'Painting on: '. PHP_EOL
                . $this->wall .' was painted with: '. $this->shape . PHP_EOL;
    }
}

/* ---------------------------------------------------------------------------
 * This is a surface to be 'painted on'. It doesn't  care how it happens
 * or who does it or why.
 *
 * It is made of a material
 */
class Wall {

    protected $material = null;

    public function __construct($material) {
        $this->material = $material;
    }

    public function __get($property)
    {
        return $this->$property;
    }

    public function __toString()
    {
        return ' Wall: Made of: '. $this->material . PHP_EOL;
    }
}

/* ---------------------------------------------------------------------------
 * This 'sprays' itself when asked... It has a color and name of the shape.
 * It doesn't know or care about where or why
 */
class Shape {

    protected $name = null;
    protected $color  = null;

    public function __construct($shape, $color) {
        $this->name = $shape;
        $this->color = $color;
    }

    public function __get($property)
    {
        return $this->$property;
    }

    public function __toString()
    {
        return 'Shape: '. $this->name .' of Color: '. $this->color . PHP_EOL;
    }
}