private void loaded(LoadCompletedEventArgs e, LoadModuleCallback callback)
{
lock (e.Request.ModuleInfo)
{
(e.Request.ModuleInfo as ModuleInfo).Status = ModuleStatus.Loaded;
}
try
{
e.Request.ModuleInfo.Initialize();
}
catch (Exception ex)
{
(e.Request.ModuleInfo as ModuleInfo).Raise(this, new LoadCompletedEventArgs(e.Request, null, ex, e.Cancelled, e.UserState));
if (callback != null)
{
callback(this, new LoadedMoudleEventArgs(e.Request, ex, false, LoadModuleStatus.End, e.UserState));
}
else
{
throw new PageException(MessageResource.PageException_ModuleInitializeError_Ttitle,
MessageResource.PageException_ModuleInitializeError_Message, ex, e.Request);
}
}
(e.Request.ModuleInfo as ModuleInfo).Raise(this, e);
if (callback != null)
{
callback(this, new LoadedMoudleEventArgs(e.Request, null, false, LoadModuleStatus.End, e.UserState));
}
}
public void LoadModule(Request request, LoadModuleCallback callback)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
if (callback != null)
{
callback(this, new LoadedMoudleEventArgs(request, null, false, LoadModuleStatus.Begin, null));
}
if (request.ModuleInfo.Status == ModuleStatus.Preloading)
{
XapModuleLoader loader = new XapModuleLoader();
loader.LoadCompleted += new EventHandler <LoadCompletedEventArgs>(OnLoadModule);
loader.LoadProgress += new EventHandler <LoadProgressEventArgs>(OnLoadModuleProgress);
loader.UserState = callback;
loader.Load(request);
lock (request.ModuleInfo)
{
(request.ModuleInfo as ModuleInfo).Status = ModuleStatus.Loading;
}
}
else if (request.ModuleInfo.Status == ModuleStatus.Loading)
{
(request.ModuleInfo as ModuleInfo).RequestQueue.Enqueue(new KeyValuePair <Request, LoadModuleCallback>(request, callback));
}
else if (request.ModuleInfo.Status == ModuleStatus.Loaded)
{
OnLoadModule(this, new LoadCompletedEventArgs(request, null, null, false, callback));
}
else if (request.ModuleInfo.Status == ModuleStatus.Initialized)
{
(request.ModuleInfo as ModuleInfo).Raise(this, new LoadCompletedEventArgs(request, null, null, false, null));
if (callback != null)
{
callback(this, new LoadedMoudleEventArgs(request, null, false, LoadModuleStatus.End, null));
}
}
}
private void OnLoadModule(object sender, LoadCompletedEventArgs e)
{
LoadModuleCallback callback = e.UserState as LoadModuleCallback;
if (e.Error != null)
{
ModuleInfo module = e.Request.ModuleInfo as ModuleInfo;
lock (module)
{
module.Status = ModuleStatus.Preloading;
}
module.Raise(this, e);
if (callback != null)
{
callback(this, new LoadedMoudleEventArgs(e.Request, e.Error, false, LoadModuleStatus.End, e.UserState));
}
else
{
throw new PageException(MessageResource.PageException_PageLoadFailure_Title,
MessageResource.PageException_PageLoadFailure_Message, e.Error, e.Request);
}
}
/*
* 如果发生页面初始化失败的时候，会导致再次打开这个页面的时候一直处于Loading状态
* 原因是EntryPointType可能在第一次加载的时候已经初始化，导致第二次不能进行加载；
* (By Aaron.L.Zhou)
*/
if (e.Request.ModuleInfo.Status == ModuleStatus.Loading && e.Request.ModuleInfo.EntryPointType == null)
{
//是否所有的Xap Dll都已经加载完成;
bool m_isLoaded = false;
try
{
int loadedAssemblyCount = 0;
Stream stream = e.Result;
IEnumerable <AssemblyPart> parts = GetParts(stream, e.Request.ModuleInfo as ModuleInfo);
ModuleInfo module = e.Request.ModuleInfo as ModuleInfo;
string moduleFile = (module.m_entryPointType.Split(',')[1] + ".dll").ToLower();
module.m_stream = new StreamResourceInfo(stream, "xap");
LoadModuleConfig(module.m_stream, module.m_config);
foreach (AssemblyPart item in parts)
{
LoadAssembly(stream, item, (a) =>
{
Interlocked.Increment(ref loadedAssemblyCount);
if (item.Source.ToLower() == moduleFile)
{
module.m_entryPointType = string.Format("{0},Version={1}",
module.m_entryPointType, Regex.Match(a.FullName, @"Version=(?<version>[\d.]+)").Groups["version"].Value);
}
if (parts.Count() == loadedAssemblyCount)
{
m_isLoaded = true;
loaded(e, callback);
}
});
}
}
catch (Exception ex)
{
ModuleInfo module = e.Request.ModuleInfo as ModuleInfo;
if (!m_isLoaded)
{
lock (module)
{
module.Status = ModuleStatus.Preloading;
}
}
module.Raise(this, new LoadCompletedEventArgs(e.Request, null, ex, e.Cancelled, e.UserState));
if (callback != null)
{
callback(this, new LoadedMoudleEventArgs(e.Request, ex, false, LoadModuleStatus.End, e.UserState));
}
else
{
throw new PageException(MessageResource.PageException_ModuleInitializeError_Ttitle,
MessageResource.PageException_ModuleInitializeError_Message, ex, e.Request);
}
}
}
}
