class Product {
    name: String
    color: String
    function label(self: Product): String { return self.name }
    function shade(self: Product): String { return self.color }
    function update(self: Product, event: Event): Unit {
        self.name = "原业务对象已更新"
        self.color = "#237A45"
    }
    function present(self: Product, window: Window): Block {
        title = TextBlock(self.name)
        swatch = RectBlock(180,48,8,self.color)
        titleBinding = title.bind("text",self.label)
        colorBinding = swatch.bind("color",self.shade)
        button = Button("调用业务对象方法")
        connection = button.on("click",self.update)
        result = Column(24,16,title,swatch,button)
        result.source = self
        result.contextWindow = window.id()
        return result
    }
}
ui.implement(Product,Presentable)
product = Product("普通对象的显式展示能力", "#526AC7")
view = ui.present(product)
page = ui.open(view)
page.title = "Presentable"