private void page_BackKeyPress(object sender, System.ComponentModel.CancelEventArgs e)
{
var evnt = NavigationEvent.FromCancelEventArgs(sender as PhoneApplicationPage, e);
if (evnt.FromUri == null)
{
evnt.FromUri = currentPageUri;
}
MessageTopicProvider <NavigationEvent> .Instance.Send(NavigationEvent.BackKeyPress, evnt);
e.Cancel = evnt.Cancel;
}
internal static NavigationEvent FromNavigationEventArgs(System.Windows.Navigation.NavigationService navigationService, NavigationEventArgs e)
{
var evnt = new NavigationEvent()
{
IsCancelable = false,
IsNavigationInitiator = e.IsNavigationInitiator,
NavigationMode = (AdysTech.FeatherLite.Navigation.NavigationMode)e.NavigationMode,
FromUri = navigationService.BackStack.Any() ? UriWithoutQUeryParam(navigationService.BackStack.FirstOrDefault().Source) : null,
ToUri = UriWithoutQUeryParam(e.Uri),
NavigationContext = new NavigationContext(e.Uri)
};
return(evnt);
}
internal static NavigationEvent FromCancelEventArgs(Microsoft.Phone.Controls.PhoneApplicationPage phoneApplicationPage, System.ComponentModel.CancelEventArgs e)
{
var evnt = new NavigationEvent()
{
IsCancelable = true,
IsNavigationInitiator = true,
NavigationMode = NavigationMode.Back,
FromUri = null,
ToUri = null,
NavigationContext = null
};
return(evnt);
}
internal static NavigationEvent FromNavigatingCancelEventArgs(System.Windows.Navigation.NavigationService navigationService, NavigatingCancelEventArgs e)
{
var evnt = new NavigationEvent()
{
IsCancelable = e.IsCancelable,
IsNavigationInitiator = e.IsNavigationInitiator,
FromUri = UriWithoutQUeryParam(navigationService.CurrentSource),
NavigationMode = (AdysTech.FeatherLite.Navigation.NavigationMode)e.NavigationMode,
Cancel = e.Cancel,
ToUri = UriWithoutQUeryParam(e.Uri),
NavigationContext = new NavigationContext(e.Uri)
};
return(evnt);
}
private bool HookupEvents()
{
if (_mainFrame != null)
{
// Could be null if the app runs inside a design tool
_mainFrame.Navigating += (s, e) =>
{
//No need to propagate event when its already cancelled.
if (e.Cancel)
{
return;
}
var service = s as System.Windows.Navigation.NavigationService;
var evnt = NavigationEvent.FromNavigatingCancelEventArgs(service, e);
lastPageUri = evnt.FromUri;
MessageTopicProvider <NavigationEvent> .Instance.Send(NavigationEvent.Navigating, evnt);
e.Cancel = evnt.Cancel;
};
_mainFrame.Navigated += (s, e) =>
{
var evnt = NavigationEvent.FromNavigationEventArgs(s as System.Windows.Navigation.NavigationService, e);
if (evnt.FromUri == null)
{
evnt.FromUri = lastPageUri;
}
currentPageUri = evnt.ToUri;
var page = e.Content as PhoneApplicationPage;
if (page != null)
{
if (lastPage != null && lastPage != page)
{
lastPage.BackKeyPress -= page_BackKeyPress;
}
lastPage = page;
page.BackKeyPress += page_BackKeyPress;
}
MessageTopicProvider <NavigationEvent> .Instance.Send(NavigationEvent.Navigated, evnt);
};
return(true);
}
return(false);
}
