private void SetContent(Uri newSource, NavigationType navigationType, object newContent, bool contentIsError)
{
var oldContent = this.Content as IContent;
// assign content
this.Content = newContent;
// do not raise navigated event when error
if (!contentIsError) {
var args = new NavigationEventArgs {
Frame = this,
Source = newSource,
Content = newContent,
NavigationType = navigationType
};
OnNavigated(oldContent, newContent as IContent, args);
}
// set IsLoadingContent to false
SetValue(IsLoadingContentPropertyKey, false);
if (!contentIsError) {
// and raise optional fragment navigation events
string fragment;
NavigationHelper.RemoveFragment(newSource, out fragment);
if (fragment != null) {
// fragment navigation
var fragmentArgs = new FragmentNavigationEventArgs {
Fragment = fragment
};
OnFragmentNavigation(newContent as IContent, fragmentArgs);
}
}
}
private void OnNavigated(IContent oldContent, IContent newContent, NavigationEventArgs e)
{
// invoke IContent.OnNavigatedFrom and OnNavigatedTo
if (oldContent != null) {
oldContent.OnNavigatedFrom(e);
}
if (newContent != null) {
newContent.OnNavigatedTo(e);
}
// raise the Navigated event
if (Navigated != null) {
Navigated(this, e);
}
}