public AuthorizationContentLoader(Frame frame, INavigationContentLoader loader)
{
if (frame == null)
{
throw new ArgumentNullException("frame");
}
if (loader == null)
{
throw new ArgumentNullException("loader");
}
this._frame = frame;
this._loader = loader;
}
public override void Load(Uri targetUri, Uri currentUri)
{
_loader = _parent.ContentLoader;
try
{
if (!_loader.CanLoad(targetUri, currentUri))
{
throw new CannotLoadException(_loader, targetUri, currentUri);
}
_result = _loader.BeginLoad(targetUri, currentUri, res =>
{
try
{
LoadResult lr = _loader.EndLoad(res);
if (lr.LoadedContent != null)
{
if (!(lr.LoadedContent is UserControl))
{
throw new InvalidContentException(
lr.LoadedContent);
}
Complete(lr.LoadedContent);
return;
}
Complete(lr.RedirectUri);
return;
}
catch (Exception e)
{
var ep = GetErrorPage(e);
if (ep == null)
{
Error(e);
return;
}
ErrorLoad(ep.Map(e), currentUri, e);
}
}, null);
}
catch (Exception e)
{
var ep = GetErrorPage(e);
if (ep == null)
{
Error(e);
return;
}
ErrorLoad(ep.Map(e), currentUri, e);
}
}
public override void Load(Uri targetUri, Uri currentUri)
{
_loader = _parent.ContentLoader ?? _defaultLoader;
if (_parent.Authorizer != null)
{
try
{
_parent.Authorizer.CheckAuthorization(_parent.Principal, targetUri, currentUri);
}
catch (Exception e)
{
Error(e);
return;
}
}
try
{
_result = _loader.BeginLoad(targetUri, currentUri, res =>
{
try
{
var loadResult = _loader.EndLoad(res);
if (loadResult.RedirectUri != null)
{
Complete(loadResult.RedirectUri);
}
else
{
Complete(loadResult.LoadedContent);
}
return;
}
catch (Exception e)
{
Error(e);
return;
}
}, null);
}
catch (Exception e)
{
Error(e);
return;
}
}
private static void ContentLoaderPropertyChanged(DependencyObject depObj, DependencyPropertyChangedEventArgs e)
{
Frame frame = (Frame)depObj;
INavigationContentLoader contentLoader = (INavigationContentLoader)e.NewValue;
if (contentLoader == null)
{
throw new ArgumentNullException("ContentLoader");
}
if (frame.NavigationService.IsNavigating)
{
throw new InvalidOperationException(String.Format(Resource.Frame_CannotSetLoaderWhenLoading, "ContentLoader"));
}
else
{
frame.NavigationService.ContentLoader = contentLoader;
}
}
private void ErrorLoad(Uri errorTarget, Uri currentUri, Exception ex)
{
_loader = _parent.ErrorContentLoader ?? _parent.ContentLoader;
try
{
_result = _loader.BeginLoad(errorTarget, currentUri, res =>
{
try
{
LoadResult lr = _loader.EndLoad(res);
if (lr.LoadedContent != null)
{
if (lr.LoadedContent is DependencyObject)
{
SetError(
(lr.LoadedContent as DependencyObject),
ex);
}
Complete(lr.LoadedContent);
return;
}
Complete(lr.RedirectUri);
return;
}
catch (Exception e)
{
Error(e);
return;
}
}, null);
}
catch (Exception e)
{
Error(e);
return;
}
}
public void TestInitialize()
{
this.PageResourceContentLoader = new PageResourceContentLoader();
}
private void ErrorLoad(Uri errorTarget, Uri currentUri, Exception ex)
{
_loader = _parent.ErrorContentLoader ?? _parent.ContentLoader;
try
{
_result = _loader.BeginLoad(errorTarget, currentUri, res =>
{
try
{
LoadResult lr = _loader.EndLoad(res);
if (lr.LoadedContent != null)
{
if (lr.LoadedContent is DependencyObject)
SetError(
(lr.LoadedContent as DependencyObject),
ex);
Complete(lr.LoadedContent);
return;
}
Complete(lr.RedirectUri);
return;
}
catch (Exception e)
{
Error(e);
return;
}
}, null);
}
catch (Exception e)
{
Error(e);
return;
}
}
public override void Load(Uri targetUri, Uri currentUri)
{
_loader = _parent.ContentLoader;
try
{
if (!_loader.CanLoad(targetUri, currentUri))
throw new CannotLoadException(_loader, targetUri, currentUri);
_result = _loader.BeginLoad(targetUri, currentUri, res =>
{
try
{
LoadResult lr = _loader.EndLoad(res);
if (lr.LoadedContent != null)
{
if (!(lr.LoadedContent is UserControl))
throw new InvalidContentException(
lr.LoadedContent);
Complete(lr.LoadedContent);
return;
}
Complete(lr.RedirectUri);
return;
}
catch (Exception e)
{
var ep = GetErrorPage(e);
if (ep == null)
{
Error(e);
return;
}
ErrorLoad(ep.Map(e), currentUri, e);
}
}, null);
}
catch (Exception e)
{
var ep = GetErrorPage(e);
if (ep == null)
{
Error(e);
return;
}
ErrorLoad(ep.Map(e), currentUri, e);
}
}
public Loader(ErrorPageLoader parent)
{
_loader = parent.ContentLoader;
_parent = parent;
_errorPages = parent.ErrorPages;
}
public Loader(ErrorPageLoader parent)
{
_loader = parent.ContentLoader;
_parent = parent;
_errorPages = parent.ErrorPages;
}
public override void Load(Uri targetUri, Uri currentUri)
{
_loader = _parent.ContentLoader ?? _defaultLoader;
if (_parent.Authorizer != null)
{
try
{
_parent.Authorizer.CheckAuthorization(_parent.Principal, targetUri, currentUri);
}
catch (Exception e)
{
Error(e);
return;
}
}
try
{
_result = _loader.BeginLoad(targetUri, currentUri, res =>
{
try
{
var loadResult = _loader.EndLoad(res);
if (loadResult.RedirectUri != null)
Complete(loadResult.RedirectUri);
else
Complete(loadResult.LoadedContent);
return;
}
catch (Exception e)
{
Error(e);
return;
}
}, null);
}
catch (Exception e)
{
Error(e);
return;
}
}
public void TestInitialize()
{
this.PageResourceContentLoader = new PageResourceContentLoader();
}
/// <summary>
/// Constructs a CannotLoadException.
/// </summary>
/// <param name = "loader">The loader whose CanLoad method returned false.</param>
/// <param name = "targetUri">The targetUri passed into CanLoad.</param>
/// <param name = "currentUri">The currentUri passed into CanLoad.</param>
public CannotLoadException(INavigationContentLoader loader, Uri targetUri, Uri currentUri)
{
Loader = loader;
TargetUri = targetUri;
CurrentUri = currentUri;
}
public Shell(INavigationContentLoader contentLoader)
{
InitializeComponent();
this.ContentFrame.ContentLoader = contentLoader;
}
/// <summary>
/// Constructs a CannotLoadException.
/// </summary>
/// <param name = "loader">The loader whose CanLoad method returned false.</param>
/// <param name = "targetUri">The targetUri passed into CanLoad.</param>
/// <param name = "currentUri">The currentUri passed into CanLoad.</param>
public CannotLoadException(INavigationContentLoader loader, Uri targetUri, Uri currentUri)
{
Loader = loader;
TargetUri = targetUri;
CurrentUri = currentUri;
}
