class Model {
    width: Number
    color: String
    label: String
    function getWidth(self: Model): Number { return self.width }
    function getColor(self: Model): String { return self.color }
    function getLabel(self: Model): String { return self.label }
    function expand(self: Model, event: Event): Unit {
        self.width = 260
        self.color = "#237A45"
        self.label = "绑定已更新"
    }
}
model = Model(120, "#526AC7", "点击更新共享对象")
rect = RectBlock(120, 40, 8, "#526AC7")
label = TextBlock("初始化")
widthBinding = rect.bind("width", model.getWidth)
colorBinding = rect.bind("color", model.getColor)
labelBinding = label.bind("text", model.getLabel)
button = Button("更新宽度、颜色和文字")
clickConnection = button.on("click", model.expand)
root = Column(24, 16, label, rect, button)
page = Page()
page.title = "通用属性绑定"
page.render(root)
second = Page()
second.title = "同一组 Block"
second.render(root)
page.activate()