/// <internalonly />
protected override IAsyncResult BeginLoadUri(Uri uri, Page uriContext, AsyncCallback callback, object asyncState)
{
if (_currentController != null) {
throw new InvalidOperationException();
}
UriData uriData = new UriData(uri);
IList<string> path = uriData.GetPath();
int minimumCount = _controllerType != null ? 1 : 2;
if ((path != null) && (path.Count >= minimumCount)) {
Controller controller = null;
Type controllerType = _controllerType;
if (controllerType == null) {
Type appType = Application.Current.GetType();
_currentControllerName = path[0];
path.RemoveAt(0);
string controllerTypeName =
appType.Namespace + ".Controllers." + _currentControllerName + "Controller";
controllerType = appType.Assembly.GetType(controllerTypeName, /* throwOnError */ false);
if (typeof(Controller).IsAssignableFrom(controllerType) == false) {
controllerType = null;
}
}
if (controllerType != null) {
controller = CreateController(controllerType);
}
if (controller != null) {
_currentController = controller;
_currentActionName = path[0];
path.RemoveAt(0);
ActionInvocation action = new ActionInvocation(_currentActionName);
foreach (string parameterItem in path) {
action.Parameters.Add(parameterItem);
}
IDictionary<string, string> queryString = uriData.GetQueryString();
if (queryString != null) {
foreach (KeyValuePair<string, string> parameterItem in queryString) {
action.NamedParameters[parameterItem.Key] = parameterItem.Value;
}
}
return ((IController)controller).BeginExecute(action, callback, asyncState);
}
}
return base.BeginLoadUri(uri, uriContext, callback, asyncState);
}
public void AddPageReference(Page page)
{
if (page.KeepAlive == false) {
return;
}
string cacheKey = GetCacheKey(page.Uri);
if ((_pages.ContainsKey(cacheKey) == false) &&
(_keepAlivePages.ContainsKey(cacheKey) == false)) {
if (_keys.Count >= _cacheSize) {
string evictCacheKey = _keys[_keys.Count - 1];
_pages.Remove(evictCacheKey);
}
_pages[cacheKey] = page;
_keys.Add(cacheKey);
}
}
public void AddPage(Page page, Uri pageUri)
{
if (page.Cache.HasValue && (page.Cache == false)) {
return;
}
string cacheKey = GetCacheKey(pageUri);
if (page.Cache.HasValue && (page.Cache == true)) {
_keepAlivePages.Add(cacheKey, page);
return;
}
if (_keys.Count >= _cacheSize) {
_pages.Remove(_keys[_keys.Count - 1]);
_keys.RemoveAt(_keys.Count - 1);
}
_keys.Insert(0, cacheKey);
_pages.Add(cacheKey, page);
}
public void RemovePageReference(Page page)
{
string cacheKey = GetCacheKey(page.Uri);
if (page.KeepAlive == true) {
if (_pages.ContainsKey(cacheKey)) {
_pages.Remove(cacheKey);
_keys.Remove(cacheKey);
}
_keepAlivePages[cacheKey] = page;
}
}