private void NavigationFrame_FragmentNavigation(object sender, System.Windows.Navigation.FragmentNavigationEventArgs e)
{
var samplePage = NavigationFrame.Content as SamplePage;
if (samplePage != null)
{
samplePage.OnNavigatedTo(e.Fragment);
}
}
protected override void OnFragmentNavigation(FragmentNavigationEventArgs e)
{
switch (e.Fragment)
{
case "Coffee":
SetItemsCoffee();
break;
case "Tea":
SetItemsTea();
break;
}
}
/// <summary>
/// Called by NavigationService to let document content to handle the fragment first.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
internal static void FragmentHandler(object sender, FragmentNavigationEventArgs e)
{
NavigationService ns = sender as NavigationService;
if (ns != null)
{
string fragment = e.Fragment;
IFixedNavigate fixedNavigate = ns.Content as IFixedNavigate;
if (fixedNavigate != null)
{
fixedNavigate.NavigateAsync(e.Fragment);
e.Handled = true;
}
}
}
/// <summary>
/// Raises the Fragment Navigation event synchronously
/// </summary>
/// <param name="fragment">The fragment that was navigated to</param>
private void RaiseFragmentNavigation(string fragment)
{
FragmentNavigationEventHandler eventHandler = this.FragmentNavigation;
if (eventHandler != null)
{
FragmentNavigationEventArgs eventArgs = new FragmentNavigationEventArgs(fragment);
eventHandler(this, eventArgs);
}
Page p = this._host.Content as Page;
if (p != null)
{
FragmentNavigationEventArgs eventArgs = new FragmentNavigationEventArgs(fragment);
p.InternalOnFragmentNavigation(eventArgs);
}
}
private void OnSourceChanged(Uri oldValue, Uri newValue, Object parameter)
{
// if resetting source or old source equals new, don't do anything
if (this.IsResetSource || newValue != null && newValue.Equals(oldValue))
{
return;
}
// handle fragment navigation
string newFragment = null;
var oldValueNoFragment = NavigationManager.RemoveFragment(oldValue);
var newValueNoFragment = NavigationManager.RemoveFragment(newValue, out newFragment);
if (newValueNoFragment != null && newValueNoFragment.Equals(oldValueNoFragment))
{
// fragment navigation
FragmentNavigationEventArgs args = new FragmentNavigationEventArgs
{
Fragment = newFragment,
Parameter = parameter,
};
OnFragmentNavigation(this.Content as IContent, args);
}
else
{
var navType = this.IsNavigatingHistory ? NavigationType.Back : NavigationType.New;
// only invoke CanNavigate for new navigation
if (!this.IsNavigatingHistory && !CanNavigate(oldValue, newValue, navType))
{
return;
}
Navigate(oldValue, newValue, navType, parameter);
}
}
// Returns true if a listener has handled the fragment and no more processing is necessary
// False indicates that NavigationService should continue with the default behaviour
private bool FireFragmentNavigation(string fragment)
{
if (string.IsNullOrEmpty(fragment))
{
// A navigation to a null or empty fragment is a scroll to the top of the page.
// This is not intuitively a fragment navigation so we should not fire this event.
return false;
}
FragmentNavigationEventArgs e = new FragmentNavigationEventArgs(fragment, INavigatorHost);
// Event handler exception continuality: if exception occurs in FragmentNavigation event handler, the cleanup action is
// the same as StopLoading().
try
{
if (_fragmentNavigation != null)
{
_fragmentNavigation(this, e);
}
if (Application != null && Application.CheckAccess())
{
Application.FireFragmentNavigation(e);
}
}
catch
{
DoStopLoading(true, false);
throw;
}
return e.Handled;
}
private void ContentFrame_FragmentNavigation(object sender, FragmentNavigationEventArgs e)
{
}
/// <summary>
/// Raises the FragmentNavigation event.
/// </summary>
/// <param name="e">The arguments that describe this event.</param>
protected virtual void OnFragmentNavigation(FragmentNavigationEventArgs e)
{
if (FragmentNavigation != null)
{
FragmentNavigation(this, e);
}
}
private void Application_FragmentNavigation(object sender, FragmentNavigationEventArgs e)
{
System.Console.WriteLine("Application_FragmentNavigation, Fragment: {0}", e.Fragment);
}
internal void InternalOnFragmentNavigation(FragmentNavigationEventArgs e)
{
this.OnFragmentNavigation(e);
}
private void OnFragmentNavigation(IContent content, FragmentNavigationEventArgs e)
{
// invoke optional IContent.OnFragmentNavigation
if (content != null)
{
content.OnFragmentNavigation(e);
}
// raise the FragmentNavigation event
if (FragmentNavigation != null)
{
FragmentNavigation(this, e);
}
}
protected virtual void OnFragmentNavigation (FragmentNavigationEventArgs args)
{
if (FragmentNavigation != null)
FragmentNavigation (this, args);
}
// Called when navigating to a fragment on a page
protected override void OnFragmentNavigation(FragmentNavigationEventArgs e)
{
}
/// <summary>
/// This method fires the FragmentNavigation event
/// whenever a navigation to a uri containing a fragment
/// occurs.
/// </summary>
/// <remarks>
/// This method follows the .Net programming guideline of having a protected virtual
/// method that raises an event, to provide a convenience for developers that subclass
/// the event. If you override this method - you need to call Base.OnNavigationStopped(...) for
/// the corresponding event to be raised.
/// </remarks>
/// <param name="e">FragmentNavigationEventArgs</param>
protected virtual void OnFragmentNavigation(FragmentNavigationEventArgs e)
{
VerifyAccess();
if (FragmentNavigation != null)
{
FragmentNavigation(this, e);
}
}
void PART_Frame_FragmentNavigation(object sender, FragmentNavigationEventArgs e)
{
if (FragmentNavigation != null)
FragmentNavigation(this, e);
}
/// <summary>
/// Called when navigation to a content fragment begins.
/// </summary>
/// <param name="e">An object that contains the navigation data.</param>
public void OnFragmentNavigation(FragmentNavigationEventArgs e)
{
}
private void ContentFrame_FragmentNavigation(object sender, FragmentNavigationEventArgs e)
{
LayoutRoot.IsBusy = false;
}
/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// fragmentnavigationeventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this FragmentNavigationEventHandler fragmentnavigationeventhandler, Object sender, FragmentNavigationEventArgs e, AsyncCallback callback)
{
if(fragmentnavigationeventhandler == null) throw new ArgumentNullException("fragmentnavigationeventhandler");
return fragmentnavigationeventhandler.BeginInvoke(sender, e, callback, null);
}
/// <summary>
/// Fragmented Navigation is not supported in WP 7 (build 7004)
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void NonLinearNavigationService_FragmentNavigation(object sender, FragmentNavigationEventArgs e)
{
Debug.WriteLine("NonLinearNavigationService_FragmentNavigation");
}
protected override void OnFragmentNavigation(FragmentNavigationEventArgs e)
{
base.OnFragmentNavigation(e);
Model.FragmentNavigation(e.Fragment);
}
internal void FireFragmentNavigation(FragmentNavigationEventArgs e)
{
OnFragmentNavigation(e);
}
private void Application_FragmentNavigation(object sender, System.Windows.Navigation.FragmentNavigationEventArgs e)
{
logger.InfoFormat("{0:D3}.{1}", ++numberIndex, MethodBase.GetCurrentMethod().Name);
}
/// <summary>
/// Raises the Fragment Navigation event synchronously
/// </summary>
/// <param name="fragment">The fragment that was navigated to</param>
private void RaiseFragmentNavigation(string fragment)
{
FragmentNavigationEventHandler eventHandler = this.FragmentNavigation;
if (eventHandler != null)
{
FragmentNavigationEventArgs eventArgs = new FragmentNavigationEventArgs(fragment);
eventHandler(this, eventArgs);
}
Page p = this._host.Content as Page;
if (p != null)
{
FragmentNavigationEventArgs eventArgs = new FragmentNavigationEventArgs(fragment);
p.InternalOnFragmentNavigation(eventArgs);
}
}
/// <summary>
/// This method is called when fragment navigation occurs on a page - either because a fragment
/// was present in the original Uri that navigated to this page, or because a later fragment
/// navigation occurs.
/// </summary>
/// <remarks>
/// This should be used rather than signing up for NavigationService.FragmentNavigation
/// because that event may be difficult to sign up for in time to get the first fragment navigation.
/// </remarks>
/// <param name="e">The event arguments, containing the fragment navigated to</param>
protected virtual void OnFragmentNavigation(FragmentNavigationEventArgs e)
{
return;
}
void frame_FragmentNavigation(object sender, FragmentNavigationEventArgs e)
{
var handler = this.FragmentNavigation;
if (handler != null)
{
handler(sender, e);
}
}
private void SetContent(Uri newSource, NavigationType navigationType, object newContent, bool contentIsError, Object parameter)
{
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,
Parameter = parameter,
};
OnNavigated(oldContent, newContent as IContent, args);
}
// set IsLoadingContent to false
SetValue(IsLoadingContentPropertyKey, false);
if (!contentIsError)
{
// and raise optional fragment navigation events
string fragment;
NavigationManager.RemoveFragment(newSource, out fragment);
if (fragment != null)
{
// fragment navigation
var fragmentArgs = new FragmentNavigationEventArgs
{
Fragment = fragment
};
OnFragmentNavigation(newContent as IContent, fragmentArgs);
}
}
}
