Silverlight Caliburn.Micro和WebService结果
我正在为Caliburn.Micro寻找这个类的正确版本 公共类WebServiceResult:IResult,其中T:new() 以上签名来自完整Caliburn框架中的ContactManager示例。Silverlight Caliburn.Micro和WebService结果,silverlight,mvvm,caliburn,caliburn.micro,Silverlight,Mvvm,Caliburn,Caliburn.micro,我正在为Caliburn.Micro寻找这个类的正确版本 公共类WebServiceResult:IResult,其中T:new() 以上签名来自完整Caliburn框架中的ContactManager示例。 它不会直接剪切和粘贴到基于Micro的项目中。缺少的类太多,无法直接使用它。思想?或者有谁知道这次更换?事件尽管Caliburn Micro(基于System.Windows.Interactive)的底层基础结构非常不同,但概念基本相同 以下是CM版本: public class Web
它不会直接剪切和粘贴到基于Micro的项目中。缺少的类太多,无法直接使用它。思想?或者有谁知道这次更换?事件尽管Caliburn Micro(基于System.Windows.Interactive)的底层基础结构非常不同,但概念基本相同 以下是CM版本:
public class WebServiceResult<T, K> : IResult
where T : new()
where K : EventArgs
{
readonly static Func<bool> ALWAYS_FALSE_GUARD= () => false;
readonly static Func<bool> ALWAYS_TRUE_GUARD = () => true;
private readonly Action<K> _callback;
private readonly Expression<Action<T>> _serviceCall;
private ActionExecutionContext _currentContext;
private Func<bool> _originalGuard;
public WebServiceResult(Expression<Action<T>> serviceCall)
{
_serviceCall = serviceCall;
}
public WebServiceResult(Expression<Action<T>> serviceCall, Action<K> callback)
{
_serviceCall = serviceCall;
_callback = callback;
}
public event EventHandler<ResultCompletionEventArgs> Completed = delegate { };
public void Execute(ActionExecutionContext context)
{
_currentContext = context;
//if you would to disable the control that caused the service to be called, you could do this:
ChangeAvailability(false);
var lambda = (LambdaExpression)_serviceCall;
var methodCall = (MethodCallExpression)lambda.Body;
var eventName = methodCall.Method.Name.Replace("Async", "Completed");
var eventInfo = typeof(T).GetEvent(eventName);
var service = new T();
eventInfo.AddEventHandler(service, new EventHandler<K>(OnEvent));
_serviceCall.Compile()(service);
}
public void OnEvent(object sender, K args)
{
//re-enable the control that caused the service to be called:
ChangeAvailability(true);
if (_callback != null)
_callback(args);
Completed(this, new ResultCompletionEventArgs());
}
private void ChangeAvailability(bool isAvailable)
{
if (_currentContext == null) return;
if (!isAvailable) {
_originalGuard = _currentContext.CanExecute;
_currentContext.CanExecute = ALWAYS_FALSE_GUARD;
}
else if (_currentContext.CanExecute == ALWAYS_FALSE_GUARD) {
_currentContext.CanExecute = _originalGuard ?? ALWAYS_TRUE_GUARD;
}
_currentContext.Message.UpdateAvailability();
}
}
公共类WebServiceResult:IResult
其中T:new()
其中K:EventArgs
{
只读静态函数总是\u FALSE\u GUARD=()=>FALSE;
只读静态函数总是_TRUE _GUARD=()=>TRUE;
私有只读操作\u回调;
私有只读表达式_serviceCall;
私有ActionExecutionContext\u currentContext;
私人Func_originalGuard;
公共WebServiceResult(表达式serviceCall)
{
_serviceCall=serviceCall;
}
公共WebServiceResult(表达式serviceCall、操作回调)
{
_serviceCall=serviceCall;
_回调=回调;
}
public event EventHandler Completed=委托{};
public void Execute(ActionExecutionContext上下文)
{
_currentContext=上下文;
//如果要禁用导致调用服务的控件,可以执行以下操作:
变更可用性(假);
var lambda=(LambdaExpression)\u serviceCall;
var methodCall=(MethodCallExpression)lambda.Body;
var eventName=methodCall.Method.Name.Replace(“异步”、“完成”);
var eventInfo=typeof(T).GetEvent(eventName);
var服务=新的T();
AddEventHandler(服务,新的EventHandler(OneEvent));
_serviceCall.Compile()(服务);
}
public void OnEvent(对象发送方,K参数)
{
//重新启用导致调用服务的控件:
变更可用性(真实);
如果(_callback!=null)
_回调(args);
已完成(这是新的ResultCompletionEventArgs());
}
私有无效更改可用性(bool可用)
{
if(_currentContext==null)返回;
如果(!i可用){
_originalGuard=\u currentContext.CanExecute;
_currentContext.CanExecute=始终\u假\u保护;
}
else if(\u currentContext.CanExecute==始终\u FALSE\u GUARD){
_currentContext.CanExecute=\u originalGuard??始终\u TRUE\u GUARD;
}
_currentContext.Message.UpdateAvailability();
}
}