static void Main(string[] args)
{
/*
* More info: https://en.wikipedia.org/wiki/Composite_pattern
* What problems can the Composite design pattern solve?
*
* A part-whole hierarchy should be represented so that clients can treat part and whole objects uniformly.
* A part-whole hierarchy should be represented as tree structure.
*
* When defining (1) Part objects and (2) Whole objects that act as containers for Part objects,
* clients must treat them separately, which complicates client code.
*/
CompositeGraphic root = new CompositeGraphic("root");
root.Add(new Leaf("Leaf A"));
root.Add(new Leaf("Leaf B"));
CompositeGraphic comp = new CompositeGraphic("Composite X");
comp.AddRange(new Leaf("Leaf XA"), new Leaf("Leaf XB"));
root.Add(comp);
root.Add(new Leaf("Leaf C"));
Leaf leaf = new Leaf("Leaf D");
root.Add(leaf);
root.Remove(leaf);
root.Display(1);
Console.ReadKey();
}
static void Main(string[] args) {
var ellipse1 = new Ellipse();
var ellipse2 = new Ellipse();
var ellipse3 = new Ellipse();
var ellipse4 = new Ellipse();
var graphic = new CompositeGraphic();
var graphic1 = new CompositeGraphic();
var graphic2 = new CompositeGraphic();
graphic1.Add(ellipse1);
graphic1.Add(ellipse2);
graphic1.Add(ellipse3);
graphic2.Add(ellipse4);
graphic.Add(graphic1);
graphic.Add(graphic2);
graphic.Print();
Console.ReadKey();
}
private static void Example()
{
var composite1 = new CompositeGraphic();
composite1.Add(new Rectangle(new Point(3, 4), new Size(6, 1)));
composite1.Add(new Ellipse(new Point(7, 8), 1, 1)); // a circle
var composite2 = new CompositeGraphic();
composite2.AddRange(new IGraphic[] {
new Ellipse(new Point(1, 0), 6, 9),
new Ellipse(new Point(0, -4), 3, 7),
new Rectangle(new Point(5, 2), new Size(7, 4))
});
var composite3 = new CompositeGraphic();
composite3.AddRange(new IGraphic[] {
composite1,
composite2
});
composite3.Draw();
}
static void Main(string[] args)
{
var ellipse1 = new Ellipse();
var ellipse2 = new Ellipse();
var ellipse3 = new Ellipse();
var ellipse4 = new Ellipse();
var graphic = new CompositeGraphic();
var graphic1 = new CompositeGraphic();
var graphic2 = new CompositeGraphic();
graphic1.Add(ellipse1);
graphic1.Add(ellipse2);
graphic1.Add(ellipse3);
graphic2.Add(ellipse4);
graphic.Add(graphic1);
graphic.Add(graphic2);
graphic.Print();
Console.ReadKey();
}