第 3 周 代码重构：代码重构能力是架构师最基本的能力

<?php
interface DomInterface
{
    public function draw();
}
abstract class Dom implements DomInterface
{
    protected $name;
    public function __construct($name)
    {
        $this->name = $name;
    }
}
class ContainerDom extends Dom
{
    /** @var DomInterface[] doms */
    private $doms = [];
    public function draw()
    {
        foreach ($this->doms as $dom) {
            $dom->draw();
        }
    }
    public function addDom($dom)
    {
        $this->doms[] = $dom;
    }
}
class WinFormDom extends ContainerDom
{
    public function draw()
    {
        echo sprintf("print WinForm(%s)\n", $this->name);
        parent::draw();
    }
}
class FrameDom extends ContainerDom
{
    public function draw()
    {
        echo sprintf("print Frame(%s)\n", $this->name);
        parent::draw();
    }
}
class PictureDom extends Dom
{
    public function draw()
    {
        echo sprintf("print Picture(%s)\n", $this->name);
    }
}
class ButtonDom extends Dom
{
    public function draw()
    {
        echo sprintf("print Button(%s)\n", $this->name);
    }
}
class LabelDom extends Dom
{
    public function draw()
    {
        echo sprintf("print Label(%s)\n", $this->name);
    }
}
class TextBoxDom extends Dom
{
    public function draw()
    {
        echo sprintf("print TextBox(%s)\n", $this->name);
    }
}
class PasswordDom extends Dom
{
    public function draw()
    {
        echo sprintf("print Password(%s)\n", $this->name);
    }
}
class CheckBoxDom extends Dom
{
    public function draw()
    {
        echo sprintf("print CheckBox(%s)\n", $this->name);
    }
}
class LinkLabelDom extends Dom
{
    public function draw()
    {
        echo sprintf("print LinkLabel(%s)\n", $this->name);
    }
}
$winForm = new WinFormDom('WINDOW窗口');
$winForm->addDom(new PictureDom('LOGO图片'));
$winForm->addDom(new ButtonDom('登录'));
$winForm->addDom(new ButtonDom('注册'));
$frame = new FrameDom('FRAME1');
$frame->addDom(new LabelDom('用户名'));
$frame->addDom(new TextBoxDom('文本框'));
$frame->addDom(new LabelDom('密码'));
$frame->addDom(new PasswordDom('密码框'));
$frame->addDom(new CheckBoxDom('复选框'));
$frame->addDom(new TextBoxDom('记住用户名'));
$frame->addDom(new LinkLabelDom('忘记密码'));
$winForm->addDom($frame);
$winForm->draw();