public override void Load(Uri targetUri, Uri currentUri)
{
//tamper protection
Boolean isMatchRequired = targetUri.OriginalString.Contains(Constants.ADDNEW) && targetUri.OriginalString.Contains(Constants.TRACKING_KEY);
try
{
PersitableScreen viewmodel;
_conductor.ViewModels.TryGetValue(targetUri.OriginalString, out viewmodel);
if (isMatchRequired && viewmodel == null)
{
throw new InvalidOperationException("Uri missing from cache");
}
if (viewmodel != null)
{
Object result = viewmodel.GetView();
if (result is Uri)
base.Complete((Uri)result);
else
base.Complete(result);
}
else
{
_result = this.Loader.BeginLoad(targetUri, currentUri, (res) =>
{
try
{
LoadResult loadResult = this.Loader.EndLoad(res);
if (loadResult.RedirectUri != null)
base.Complete(loadResult.RedirectUri);
else
{
DependencyObject content = loadResult.LoadedContent as DependencyObject;
if (content != null)
{
String currentOriginalString = null;
if (currentUri == null || String.IsNullOrWhiteSpace(currentUri.OriginalString))
{
currentOriginalString = Constants.HOME_URI_STRING;
}
else
{
currentOriginalString = currentUri.OriginalString;
}
String targetUriString = targetUri.OriginalString;
String trackingKey = String.Empty;
if (targetUri.OriginalString.EndsWith(Constants.ADD_NEW_QUERYSTRING))
{
trackingKey = Guid.NewGuid().ToString();
targetUriString = String.Concat(targetUriString.Replace(Constants.ADD_NEW_QUERYSTRING, String.Empty), Constants.TRACKING_KEY_QUERYSTRING, trackingKey);
}
ViewLocator.InitializeComponent(content);
var vm = ViewModelLocator.LocateForView(content);
if (vm == null)
{
// to avoid shellviewmodel to be set on cild screens datacontext property
vm = new PersitableScreen();
}
viewmodel = vm as PersitableScreen;
if (viewmodel != null)
{
viewmodel.ViewType = content.GetType();
viewmodel.UriString = targetUriString;
viewmodel.ParentUriOriginalString = currentOriginalString;
viewmodel.TrackingKey = trackingKey;
// TODO: Add query string
Uri auri = new Uri("dummy://" + targetUriString, UriKind.Absolute);
string query = auri.Query;
// _conductor.NavigationService.TryInjectQueryString(viewmodel,content);
}
// dont rebind when you're bound to yourself
if (vm != content)
ViewModelBinder.Bind(vm, content, null);
base.Complete(content);
}
else
{
throw new InvalidOperationException("LoadedContent was null or not a DependencyObject");
}
return;
}
}
catch (Exception e)
{
base.Error(e);
return;
}
}, null);
}
}
catch (Exception e)
{
base.Error(e);
return;
}
}
public override void Load(Uri targetUri, Uri currentUri)
{
//tamper protection
Boolean isMatchRequired = targetUri.OriginalString.Contains(Constants.ADDNEW) && targetUri.OriginalString.Contains(Constants.TRACKING_KEY);
try
{
PersitableScreen viewmodel;
_conductor.ViewModels.TryGetValue(targetUri.OriginalString, out viewmodel);
if (isMatchRequired && viewmodel == null)
{
throw new InvalidOperationException("Uri missing from cache");
}
if (viewmodel != null)
{
Object result = viewmodel.GetView();
if (result is Uri)
{
base.Complete((Uri)result);
}
else
{
base.Complete(result);
}
}
else
{
_result = this.Loader.BeginLoad(targetUri, currentUri, (res) =>
{
try
{
LoadResult loadResult = this.Loader.EndLoad(res);
if (loadResult.RedirectUri != null)
{
base.Complete(loadResult.RedirectUri);
}
else
{
DependencyObject content = loadResult.LoadedContent as DependencyObject;
if (content != null)
{
String currentOriginalString = null;
if (currentUri == null || String.IsNullOrWhiteSpace(currentUri.OriginalString))
{
currentOriginalString = Constants.HOME_URI_STRING;
}
else
{
currentOriginalString = currentUri.OriginalString;
}
String targetUriString = targetUri.OriginalString;
String trackingKey = String.Empty;
if (targetUri.OriginalString.EndsWith(Constants.ADD_NEW_QUERYSTRING))
{
trackingKey = Guid.NewGuid().ToString();
targetUriString = String.Concat(targetUriString.Replace(Constants.ADD_NEW_QUERYSTRING, String.Empty), Constants.TRACKING_KEY_QUERYSTRING, trackingKey);
}
ViewLocator.InitializeComponent(content);
var vm = ViewModelLocator.LocateForView(content);
if (vm == null)
{
// to avoid shellviewmodel to be set on cild screens datacontext property
vm = new PersitableScreen();
}
viewmodel = vm as PersitableScreen;
if (viewmodel != null)
{
viewmodel.ViewType = content.GetType();
viewmodel.UriString = targetUriString;
viewmodel.ParentUriOriginalString = currentOriginalString;
viewmodel.TrackingKey = trackingKey;
// TODO: Add query string
Uri auri = new Uri("dummy://" + targetUriString, UriKind.Absolute);
string query = auri.Query;
// _conductor.NavigationService.TryInjectQueryString(viewmodel,content);
}
// dont rebind when you're bound to yourself
if (vm != content)
{
ViewModelBinder.Bind(vm, content, null);
}
base.Complete(content);
}
else
{
throw new InvalidOperationException("LoadedContent was null or not a DependencyObject");
}
return;
}
}
catch (Exception e)
{
base.Error(e);
return;
}
}, null);
}
}
catch (Exception e)
{
base.Error(e);
return;
}
}