建立可扩展的silverlight 应用框架 step-5

我和未来有约会发布于2010-02-22 01:31 | 87次阅读 | 字体:大小打印预览

阅读: 563 评论: 2 作者: 王喆(nasa) 发表于 2010-02-22 01:31 原文链接

整理Module

在第三节里边，建立了一个最简单的Module。这里要对其再进行整理。之前我写过一篇《简练的视图模型 ViewModel》这里就讲述了一个最最基本的运用视图与模型的例子。用模型来控制视图的呈现在很早的时候就提出来了。当然Prism这个框架也包括了这一点。这里就要为Module加入Model。

这里记录下整理步骤

1.在Module项目中新建立一个Models文件夹，用来存放数据模型。在文件下新建立一个HelloPrismModel类继承自INotifyPropertyChanged。

在构造函数中将视图作为参数传入将视图和模型相绑定。

public class HelloPrismModel : INotifyPropertyChanged { public HelloPrismView view { get; private set; } public HelloPrismModel(HelloPrismView view) { this.view = view; view.model = this; } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; private void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = this.PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } #endregion }
2.在Views文件下新建立一个IHelloPrismView接口。在接口中声明其模型属性

public interface IHelloPrismView { HelloPrismModel model { get; set; } }
3.修改原来的HelloPrismView.xaml继承自IHelloPrismView接口并且实现接口。

public partial class HelloPrismView : UserControl, IHelloPrismView { private readonly IModuleManager moduleManager; public HelloPrismView() { InitializeComponent(); } public HelloPrismView(IModuleManager moduleManager):this() { this.moduleManager = moduleManager; } #region IHelloPrismView Members public HelloPrismModel model { get { return this.DataContext as HelloPrismModel; } set { this.DataContext = value; } } #endregion } 4.最后重构一下HelloPrismModule类

public class HelloPrismModule : IModule { private readonly IRegionManager regionManager; private readonly IUnityContainer container; private readonly IModuleManager moduleManager; public HelloPrismModule(IUnityContainer container, IRegionManager regionManager, IModuleManager moduleManager) { this.container = container; this.regionManager = regionManager; this.moduleManager = moduleManager; } public void Initialize() { HelloPrismModel helloPrismModel = this.container.Resolve(); IRegion mainRegion = this.regionManager.Regions["MainRegion"]; object view = mainRegion.GetView("mainCurrView"); if (view != null) mainRegion.Remove(view); mainRegion.Add(helloPrismModel.view, "mainCurrView"); } }