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Added in generic ViewModel

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This commit is contained in:
Clint Rutkas
2020-03-11 10:43:32 -07:00
committed by Lavius Motileng
parent e2c7941542
commit 3f5a54f9f1
43 changed files with 1305 additions and 23 deletions
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102
src/core/Microsoft.PowerToys.Settings.UI/Services/NavigationService.cs Normal file
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using System;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media.Animation;
using Windows.UI.Xaml.Navigation;
namespace Microsoft.PowerToys.Settings.UI.Services
{
public static class NavigationService
{
public static event NavigatedEventHandler Navigated;
public static event NavigationFailedEventHandler NavigationFailed;
private static Frame _frame;
private static object _lastParamUsed;
public static Frame Frame
{
get
{
if (_frame == null)
{
_frame = Window.Current.Content as Frame;
RegisterFrameEvents();
}
return _frame;
}
set
{
UnregisterFrameEvents();
_frame = value;
RegisterFrameEvents();
}
}
public static bool CanGoBack => Frame.CanGoBack;
public static bool CanGoForward => Frame.CanGoForward;
public static bool GoBack()
{
if (CanGoBack)
{
Frame.GoBack();
return true;
}
return false;
}
public static void GoForward() => Frame.GoForward();
public static bool Navigate(Type pageType, object parameter = null, NavigationTransitionInfo infoOverride = null)
{
// Don't open the same page multiple times
if (Frame.Content?.GetType() != pageType || (parameter != null && !parameter.Equals(_lastParamUsed)))
{
var navigationResult = Frame.Navigate(pageType, parameter, infoOverride);
if (navigationResult)
{
_lastParamUsed = parameter;
}
return navigationResult;
}
else
{
return false;
}
}
public static bool Navigate<T>(object parameter = null, NavigationTransitionInfo infoOverride = null)
where T : Page
=> Navigate(typeof(T), parameter, infoOverride);
private static void RegisterFrameEvents()
{
if (_frame != null)
{
_frame.Navigated += Frame_Navigated;
_frame.NavigationFailed += Frame_NavigationFailed;
}
}
private static void UnregisterFrameEvents()
{
if (_frame != null)
{
_frame.Navigated -= Frame_Navigated;
_frame.NavigationFailed -= Frame_NavigationFailed;
}
}
private static void Frame_NavigationFailed(object sender, NavigationFailedEventArgs e) => NavigationFailed?.Invoke(sender, e);
private static void Frame_Navigated(object sender, NavigationEventArgs e) => Navigated?.Invoke(sender, e);
}
}