private void OnBrowserNavigated(object sender, System.Windows.Navigation.NavigationEventArgs e)
{
WebAddress = e.Uri == null ? "" : e.Uri.OriginalString;
var doc = Browser.Browser.Document as HTMLDocument;
Header = doc.title == "" ? Header : doc.title;
ForwardCommand.RaiseCanExecuteChanged();
BackCommand.RaiseCanExecuteChanged();
}
/// <inheritdoc/>
protected override void OnPropertyChanged(PropertyChangedEventArgs eventArgs)
{
if (InspectCommand != null) // Method is called in constructor before commands are set.
{
InspectCommand.RaiseCanExecuteChanged();
BackCommand.RaiseCanExecuteChanged();
RefreshCommand.RaiseCanExecuteChanged();
CopyValueCommand.RaiseCanExecuteChanged();
}
base.OnPropertyChanged(eventArgs);
}
private void SetFrame(Frame frame)
{
if (BackCommand != null)
{
BackCommand.CanExecuteChanged -= OnCanExecuteChanged;
}
BackCommand = new BackCommand(frame);
BackCommand.CanExecuteChanged += OnCanExecuteChanged;
BackCommand.RaiseCanExecuteChanged();
}
private void ExecuteNav(NavType navType)
{
var type = navType.Type;
_contentFrame.Navigate(navType.Type, navType.Parameter);
// when we nav home, clear history
if (type == typeof(HomePage))
{
_contentFrame.BackStack.Clear();
BackCommand?.RaiseCanExecuteChanged();
}
}
public async Task SetPage()
{
CollapseTab();
await Task.Factory.StartNew(() =>
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
if (CurrentPage != null)
{
CurrentPage.OnNavigatedFrom();
}
});
});
await Task.Delay(250);
await Task.Factory.StartNew(() =>
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
CurrentPage = _navigationHistory.Peek();
});
});
await Task.Delay(200);
ExpandTab();
await Task.Factory.StartNew(() =>
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
CurrentPage.OnNavigatedTo();
BackCommand.RaiseCanExecuteChanged();
OpenSettingsCommand.RaiseCanExecuteChanged();
});
});
}
public virtual void OnNavigatedTo(NavigationContext navigationContext)
{
RegionNavigationService = navigationContext.NavigationService;
BackCommand.RaiseCanExecuteChanged();
ForwardCommand.RaiseCanExecuteChanged();
}
private void Frame_Navigated(object sender, NavigationEventArgs e)
{
if (e.NavigationMode == Windows.UI.Xaml.Navigation.NavigationMode.Refresh)
{
return;
}
var frame = (Frame)sender;
BackCommand.RaiseCanExecuteChanged();
MyNavigtionView.IsPaneVisible = !MenuPaneHiddenPageTypes.Any(x => x == e.SourcePageType);
if (MyNavigtionView.IsPaneVisible)
{
var sourcePageTypeName = e.SourcePageType.Name;
if (e.SourcePageType == typeof(FolderListupPage))
{
sourcePageTypeName = nameof(Views.SourceStorageItemsPage);
}
var selectedMeuItemVM = ((List <object>)MyNavigtionView.MenuItemsSource).FirstOrDefault(x => (x as MenuItemViewModel)?.PageType == sourcePageTypeName);
if (selectedMeuItemVM != null)
{
MyNavigtionView.SelectedItem = selectedMeuItemVM;
}
}
// 戻れない設定のページではバックナビゲーションボタンを非表示に切り替え
var isCanGoBackPage = CanGoBackPageTypes.Contains(e.SourcePageType);
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility =
isCanGoBackPage
? AppViewBackButtonVisibility.Visible
: AppViewBackButtonVisibility.Collapsed
;
// 戻れない設定のページに到達したら Frame.BackStack から不要なPageEntryを削除する
if (!isCanGoBackPage)
{
ContentFrame.BackStack.Clear();
BackParametersStack.Clear();
if (e.NavigationMode == Windows.UI.Xaml.Navigation.NavigationMode.New)
{
ContentFrame.ForwardStack.Clear();
ForwardParametersStack.Clear();
}
_ = StoreNaviagtionParameterDelayed();
}
else if (!_isFirstNavigation)
{
// ここのFrame_Navigatedが呼ばれた後にViewModel側のNavigatingToが呼ばれる
// 順序重要
_Prev = PrimaryWindowCoreLayout.CurrentNavigationParameters;
// ビューワー系ページはバックスタックに積まれないようにする
// ビューワー系ページを開いてる状態でアプリ外部からビューワー系ページを開く操作があり得る
bool rememberBackStack = true;
if (ForgetOwnNavigationPageTypes.Any(type => type == e.SourcePageType))
{
var lastNavigatedPageEntry = frame.BackStack.LastOrDefault();
if (ForgetOwnNavigationPageTypes.Any(type => type == lastNavigatedPageEntry?.SourcePageType) &&
e.SourcePageType == lastNavigatedPageEntry?.SourcePageType
)
{
frame.BackStack.RemoveAt(frame.BackStackDepth - 1);
rememberBackStack = false;
}
}
if (e.NavigationMode != Windows.UI.Xaml.Navigation.NavigationMode.New)
{
rememberBackStack = false;
}
if (rememberBackStack)
{
ForwardParametersStack.Clear();
var parameters = new NavigationParameters();
if (_Prev != null)
{
foreach (var pair in _Prev)
{
if (pair.Key == PageNavigationConstants.Restored)
{
continue;
}
parameters.Add(pair.Key, pair.Value);
}
}
BackParametersStack.Add(parameters);
}
_ = StoreNaviagtionParameterDelayed();
}
_isFirstNavigation = false;
}
public AppShell(Frame frame)
{
_contentFrame = frame;
InitializeComponent();
ShellSplitView.Content = frame;
var update = new Action(() =>
{
// update radiobuttons after frame navigates
var type = frame.CurrentSourcePageType;
foreach (var radioButton in AllRadioButtons(this))
{
var target = radioButton.CommandParameter as NavType;
if (target == null)
{
continue;
}
radioButton.IsChecked = target.Type == type;
}
if (ShellSplitView.DisplayMode != SplitViewDisplayMode.CompactInline)
{
ShellSplitView.IsPaneOpen = false;
}
BackCommand.RaiseCanExecuteChanged();
});
frame.Navigated += (s, e) => update();
Loaded += delegate
{
Current = this;
update();
if (_isWindowsPhone)
{
btnHamburger.Background = null;
}
};
SizeChanged += AppShell_SizeChanged;
rbBack.Visibility = Visibility.Collapsed;
btnBack.Visibility = (_isWindowsPhone) ? Visibility.Collapsed : Visibility.Visible;
if (_isWindowsPhone)
{
HardwareButtons.BackPressed += delegate(object sender, BackPressedEventArgs e) { if (CanBack())
{
e.Handled = true; ExecuteBack();
}
};
ShellSplitView.DisplayMode = SplitViewDisplayMode.Overlay;
}
else
{
ShellSplitView.DisplayMode = SplitViewDisplayMode.CompactOverlay;
}
if (_isWindowsPhone)
{
btnHamburger.Foreground = new SolidColorBrush(Colors.Black);
}
DataContext = this;
}