winrt: Launch default program if unviewable content is loaded

If a file type that cannot be shown in a webview, is passed via setUrl,
the user should be asked what to do/the default program should be
opened. This behavior matches what is done, when an unknown URL scheme
is passed.

Change-Id: Ia318f14d9dcdeb8f3bbb734b342eb38a02fb3dc4
Reviewed-by: Miguel Costa <miguel.costa@qt.io>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>

2 files changed, 23 insertions, 0 deletions

diff --git a/src/plugins/winrt/qwinrtwebview.cpp b/src/plugins/winrt/qwinrtwebview.cpp
index a9ae659..0faf7d1 100644
--- a/src/plugins/winrt/qwinrtwebview.cpp
+++ b/src/plugins/winrt/qwinrtwebview.cpp
@@ -279,6 +279,7 @@ struct WinRTWebView
 
     EventRegistrationToken navigationStartingToken;
     EventRegistrationToken navigationCompletedToken;
+    EventRegistrationToken unviewableContentToken;
     bool isLoading : 1;
 };
 
@@ -320,6 +321,10 @@ QWinRTWebViewPrivate::QWinRTWebViewPrivate(QObject *parent)
                     Callback<ITypedEventHandler<WebView *, WebViewNavigationCompletedEventArgs *>>(this, &QWinRTWebViewPrivate::onNavigationCompleted).Get(),
                     &d->navigationCompletedToken);
         Q_ASSERT_SUCCEEDED(hr);
+        hr = d->ext->add_UnviewableContentIdentified(
+                    Callback<ITypedEventHandler<WebView *, WebViewUnviewableContentIdentifiedEventArgs *>>(this, &QWinRTWebViewPrivate::onUnviewableContent).Get(),
+                    &d->unviewableContentToken);
+        Q_ASSERT_SUCCEEDED(hr);
 
         ComPtr<IDisplayInformationStatics> displayInformationStatics;
         hr = RoGetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Graphics_Display_DisplayInformation).Get(),
@@ -347,6 +352,9 @@ QWinRTWebViewPrivate::~QWinRTWebViewPrivate()
         Q_ASSERT_SUCCEEDED(hr);
         hr = d->ext->remove_NavigationCompleted(d->navigationCompletedToken);
         Q_ASSERT_SUCCEEDED(hr);
+        hr = d->ext->remove_UnviewableContentIdentified(d->unviewableContentToken);
+        Q_ASSERT_SUCCEEDED(hr);
+
         ComPtr<IVector<UIElement *>> children;
         hr = d->host->get_Children(&children);
         Q_ASSERT_SUCCEEDED(hr);
@@ -680,3 +688,15 @@ HRESULT QWinRTWebViewPrivate::onNavigationCompleted(IWebView *, IWebViewNavigati
     emit loadProgressChanged(100);
     return S_OK;
 }
+
+HRESULT QWinRTWebViewPrivate::onUnviewableContent(IWebView *, IWebViewUnviewableContentIdentifiedEventArgs *args)
+{
+    HRESULT hr;
+    ComPtr<IUriRuntimeClass> uri;
+    hr = args->get_Uri(&uri);
+    Q_ASSERT_SUCCEEDED(hr);
+    ComPtr<IAsyncOperation<bool>> op;
+    hr = d->launcherStatics->LaunchUriAsync(uri.Get(), &op);
+    Q_ASSERT_SUCCEEDED(hr);
+    return S_OK;
+}
diff --git a/src/plugins/winrt/qwinrtwebview_p.h b/src/plugins/winrt/qwinrtwebview_p.h
index 2b7d937..3756b7d 100644
--- a/src/plugins/winrt/qwinrtwebview_p.h
+++ b/src/plugins/winrt/qwinrtwebview_p.h
@@ -58,6 +58,7 @@ namespace ABI {
                     struct IWebView;
                     struct IWebViewNavigationStartingEventArgs;
                     struct IWebViewNavigationCompletedEventArgs;
+                    struct IWebViewUnviewableContentIdentifiedEventArgs;
                 }
             }
         }
@@ -101,6 +102,8 @@ protected:
 private:
     HRESULT onNavigationStarted(ABI::Windows::UI::Xaml::Controls::IWebView *, ABI::Windows::UI::Xaml::Controls::IWebViewNavigationStartingEventArgs *);
     HRESULT onNavigationCompleted(ABI::Windows::UI::Xaml::Controls::IWebView *, ABI::Windows::UI::Xaml::Controls::IWebViewNavigationCompletedEventArgs *);
+    HRESULT onUnviewableContent(ABI::Windows::UI::Xaml::Controls::IWebView *,
+                             ABI::Windows::UI::Xaml::Controls::IWebViewUnviewableContentIdentifiedEventArgs *);
     QScopedPointer<WinRTWebView> d;
 };