Tests/VSXaml/App.xaml.cpp

   1 //
   2 // App.xaml.cpp
   3 // Implementation of the App class.
   4 //
   5
   6 #include "MainPage.xaml.h"
   7 #include "pch.h"
   8
   9 using namespace VSXaml;
  10
  11 using namespace Platform;
  12 using namespace Windows::ApplicationModel;
  13 using namespace Windows::ApplicationModel::Activation;
  14 using namespace Windows::Foundation;
  15 using namespace Windows::Foundation::Collections;
  16 using namespace Windows::UI::Xaml;
  17 using namespace Windows::UI::Xaml::Controls;
  18 using namespace Windows::UI::Xaml::Controls::Primitives;
  19 using namespace Windows::UI::Xaml::Data;
  20 using namespace Windows::UI::Xaml::Input;
  21 using namespace Windows::UI::Xaml::Interop;
  22 using namespace Windows::UI::Xaml::Media;
  23 using namespace Windows::UI::Xaml::Navigation;
  24
  25 // The Blank Application template is documented at
  26 // http://go.microsoft.com/fwlink/?LinkId=234227
  27
  28 /// <summary>
  29 /// Initializes the singleton application object.  This is the first line of
  30 /// authored code executed, and as such is the logical equivalent of main()
  31 /// or WinMain().
  32 /// </summary>
  33 App::App()
  34 {
  35   InitializeComponent();
  36   Suspending += ref new SuspendingEventHandler(this, &App::OnSuspending);
  37 }
  38
  39 /// <summary>
  40 /// Invoked when the application is launched normally by the end user.
  41 /// Other entry points will be used such as when the application is
  42 /// launched to open a specific file.
  43 /// </summary>
  44 /// <param name="e">Details about the launch request and process.</param>
  45 void App::OnLaunched(
  46   Windows::ApplicationModel::Activation::LaunchActivatedEventArgs ^ e)
  47 {
  48
  49 #if _DEBUG
  50   // Show graphics profiling information while debugging.
  51   if (IsDebuggerPresent()) {
  52     // Display the current frame rate counters
  53     DebugSettings->EnableFrameRateCounter = true;
  54   }
  55 #endif
  56
  57   auto rootFrame = dynamic_cast<Frame ^>(Window::Current->Content);
  58
  59   // Do not repeat app initialization when the Window already has content,
  60   // just ensure that the window is active
  61   if (rootFrame == nullptr) {
  62     // Create a Frame to act as the navigation context and associate it with
  63     // a SuspensionManager key
  64     rootFrame = ref new Frame();
  65
  66     // Set the default language
  67     rootFrame->Language =
  68       Windows::Globalization::ApplicationLanguages::Languages->GetAt(0);
  69
  70     rootFrame->NavigationFailed +=
  71       ref new Windows::UI::Xaml::Navigation::NavigationFailedEventHandler(
  72         this, &App::OnNavigationFailed);
  73
  74     if (e->PreviousExecutionState == ApplicationExecutionState::Terminated) {
  75       // TODO: Restore the saved session state only when appropriate,
  76       // scheduling the
  77       // final launch steps after the restore is complete
  78     }
  79
  80     if (rootFrame->Content == nullptr) {
  81       // When the navigation stack isn't restored navigate to the first page,
  82       // configuring the new page by passing required information as a
  83       // navigation
  84       // parameter
  85       rootFrame->Navigate(TypeName(MainPage::typeid), e->Arguments);
  86     }
  87     // Place the frame in the current Window
  88     Window::Current->Content = rootFrame;
  89     // Ensure the current window is active
  90     Window::Current->Activate();
  91   } else {
  92     if (rootFrame->Content == nullptr) {
  93       // When the navigation stack isn't restored navigate to the first page,
  94       // configuring the new page by passing required information as a
  95       // navigation
  96       // parameter
  97       rootFrame->Navigate(TypeName(MainPage::typeid), e->Arguments);
  98     }
  99     // Ensure the current window is active
 100     Window::Current->Activate();
 101   }
 102 }
 103
 104 /// <summary>
 105 /// Invoked when application execution is being suspended.  Application state
 106 /// is saved without knowing whether the application will be terminated or
 107 /// resumed with the contents of memory still intact.
 108 /// </summary>
 109 /// <param name="sender">The source of the suspend request.</param>
 110 /// <param name="e">Details about the suspend request.</param>
 111 void App::OnSuspending(Object ^ sender, SuspendingEventArgs ^ e)
 112 {
 113   (void)sender; // Unused parameter
 114   (void)e;      // Unused parameter
 115
 116   // TODO: Save application state and stop any background activity
 117 }
 118
 119 /// <summary>
 120 /// Invoked when Navigation to a certain page fails
 121 /// </summary>
 122 /// <param name="sender">The Frame which failed navigation</param>
 123 /// <param name="e">Details about the navigation failure</param>
 124 void App::OnNavigationFailed(
 125   Platform::Object ^ sender,
 126   Windows::UI::Xaml::Navigation::NavigationFailedEventArgs ^ e)
 127 {
 128   throw ref new FailureException("Failed to load Page " +
 129                                  e->SourcePageType.Name);
 130 }