public static Task <FeedCompletedArgs> FeedFacebookAsync(this WebBrowser browser, Uri uri)
{
CurrentState = FacebookSDKState.FeedDialog;
feedTaskCompletionSource = new TaskCompletionSource <FeedCompletedArgs>();
onFeedCompleted = null;
onFeedCompleted = (object sender, NavigationEventArgs e) =>
{
FeedCompletedArgs result;
FeedNavigationCallBack(e, out result);
if (result != null)
{
browser.Navigated -= onFeedCompleted;
feedTaskCompletionSource.SetResult(result);
}
};
onFeedFailed = null;
onFeedFailed = (object sender, NavigationFailedEventArgs e) =>
{
browser.NavigationFailed -= onFeedFailed;
feedTaskCompletionSource.SetResult(new FeedCompletedArgs(false));
};
browser.Navigated += onFeedCompleted;
browser.NavigationFailed += onFeedFailed;
browser.Navigate(uri);
return(feedTaskCompletionSource.Task);
}
public static Task <AppRequestsCompletedArgs> AppRequestFacebookAsync(this WebBrowser browser, Uri uri)
{
CurrentState = FacebookSDKState.AppRequestDialog;
appRequestTaskCompletionSource = new TaskCompletionSource <AppRequestsCompletedArgs>();
onRequestCompleted = null;
onRequestCompleted = (object sender, NavigationEventArgs e) =>
{
AppRequestsCompletedArgs result;
RequestNavigationCallBack(e, out result);
if (result != null)
{
browser.Navigated -= onRequestCompleted;
appRequestTaskCompletionSource.SetResult(result);
}
};
onRequestFailed = null;
onRequestFailed = (object sender, NavigationFailedEventArgs e) =>
{
browser.NavigationFailed -= onRequestFailed;
appRequestTaskCompletionSource.SetResult(new AppRequestsCompletedArgs(false));
};
browser.Navigated += onRequestCompleted;
browser.NavigationFailed += onRequestFailed;
browser.Navigate(uri);
return(appRequestTaskCompletionSource.Task);
}
public static Task <LoginCompletedArgs> LoginFacebookAsync(this WebBrowser browser, Uri uri, string fbAppId, string extendedPermissions)
{
CurrentState = FacebookSDKState.Login;
loginTaskCompletionSource = new TaskCompletionSource <LoginCompletedArgs>();
onLoginCompleted = null;
onLoginCompleted = (object sender, NavigationEventArgs e) =>
{
LoginCompletedArgs result;
LoginNavigationCallBack(e, fbAppId, extendedPermissions, out result);
if (result != null)
{
browser.Navigated -= onLoginCompleted;
loginTaskCompletionSource.SetResult(result);
}
};
onLoginFailed = null;
onLoginFailed = (object sender, NavigationFailedEventArgs e) =>
{
browser.NavigationFailed -= onLoginFailed;
loginTaskCompletionSource.SetResult(new LoginCompletedArgs(false));
};
browser.Navigated += onLoginCompleted;
browser.NavigationFailed += onLoginFailed;
browser.Navigate(uri);
return(loginTaskCompletionSource.Task);
}
private void AddHandler()
{
NavigatedEventHandler successHandler = null;
NavigationFailedEventHandler failureHandler = null;
NavigatingCancelEventHandler beforeHandler = null;
successHandler = (s, e) =>
{
Frame.Navigated -= successHandler;
Frame.NavigationFailed -= failureHandler;
AfterNavigation(null, e.Content as UserControl);
};
failureHandler = (s, e) =>
{
Frame.Navigated -= successHandler;
Frame.NavigationFailed -= failureHandler;
AfterNavigation(e.Exception, null);
};
beforeHandler = (s, e) =>
{
Frame.Navigating -= beforeHandler;
BeforeNavigation();
};
Frame.Navigated += successHandler;
Frame.NavigationFailed += failureHandler;
Frame.Navigating += beforeHandler;
}
public Task LogoutAsync(Uri logoutUri)
{
var frame = new Frame();
var tcs = new TaskCompletionSource <bool>();
LoadCompletedEventHandler loadCompletedHandler = null;
NavigationFailedEventHandler failedHandler = null;
Action unsubscribe = () =>
{
// ReSharper disable AccessToModifiedClosure
frame.LoadCompleted -= loadCompletedHandler;
frame.NavigationFailed -= failedHandler;
// ReSharper restore AccessToModifiedClosure
};
loadCompletedHandler =
(sender, e) =>
{
unsubscribe();
tcs.SetResult(true);
};
failedHandler =
(sender, e) =>
{
unsubscribe();
tcs.SetException(e.Exception);
};
frame.LoadCompleted += loadCompletedHandler;
frame.NavigationFailed += failedHandler;
frame.Navigate(logoutUri);
return(tcs.Task);
}
/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// navigationfailedeventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this NavigationFailedEventHandler navigationfailedeventhandler, Object sender, NavigationFailedEventArgs e, AsyncCallback callback)
{
if (navigationfailedeventhandler == null)
{
throw new ArgumentNullException("navigationfailedeventhandler");
}
return(navigationfailedeventhandler.BeginInvoke(sender, e, callback, null));
}
/// <summary>
/// Raises the Failed event synchronously.
/// </summary>
/// <param name="uri">A URI value representing the navigation content.</param>
/// <param name="exception">The error that occurred</param>
/// <returns>true if the the exception should be re-thrown, false if it was handled</returns>
private bool RaiseNavigationFailed(Uri uri, Exception exception)
{
NavigationFailedEventHandler eventHandler = this.NavigationFailed;
NavigationFailedEventArgs eventArgs = new NavigationFailedEventArgs(uri, exception);
if (eventHandler != null)
{
eventHandler(this, eventArgs);
}
return(!eventArgs.Handled);
}
public static void Initialize<T>(List<NavMenuItem> list, NavigationFailedEventHandler OnNavigationFailed, LaunchActivatedEventArgs e)
{
AppShell shell = Window.Current.Content as AppShell;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (shell == null)
{
// Create a AppShell to act as the navigation context and navigate to the first page
shell = new AppShell();
shell.NavigationList = list;
try
{
shell.CurrentItem = list.First(i => i.DestPage == typeof(T));
}
catch
{
}
// Set the default language
shell.Language = Windows.Globalization.ApplicationLanguages.Languages[0];
shell.AppFrame.NavigationFailed += OnNavigationFailed;
if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
{
//TODO: Load state from previously suspended application
}
}
// Place our app shell in the current Window
Window.Current.Content = shell;
if (shell.AppFrame.Content == null)
{
// When the navigation stack isn't restored, navigate to the first page
// suppressing the initial entrance animation.
shell.AppFrame.Navigate(typeof(T), e.Arguments, new Windows.UI.Xaml.Media.Animation.SuppressNavigationTransitionInfo());
}
// Ensure the current window is active
Window.Current.Activate();
}
private void AddHandler()
{
NavigatedEventHandler successHandler = null;
NavigationFailedEventHandler failureHandler = null;
successHandler = (s, e) =>
{
Frame.Navigated -= successHandler;
Frame.NavigationFailed -= failureHandler;
AfterNavigation();
};
failureHandler = (s, e) =>
{
Frame.Navigated -= successHandler;
Frame.NavigationFailed -= failureHandler;
AfterNavigation();
};
Frame.Navigated += successHandler;
Frame.NavigationFailed += failureHandler;
}
private void AddHandler()
{
NavigatedEventHandler successHandler = null;
NavigationFailedEventHandler failureHandler = null;
successHandler = (s, e) =>
{
_rootFrame.Navigated -= successHandler;
_rootFrame.NavigationFailed -= failureHandler;
AfterNavigation(null, e.Content as UserControl);
};
failureHandler = (s, e) =>
{
_rootFrame.Navigated -= successHandler;
_rootFrame.NavigationFailed -= failureHandler;
AfterNavigation(e.Exception, null);
};
_rootFrame.Navigated += successHandler;
_rootFrame.NavigationFailed += failureHandler;
}
