2020-03-25 10:55:02 +08:00
|
|
|
|
// <copyright file="ShellViewModel.cs" company="Microsoft Corp">
|
|
|
|
|
// Copyright (c) Microsoft Corp. All rights reserved.
|
|
|
|
|
// </copyright>
|
2020-03-12 01:43:32 +08:00
|
|
|
|
|
|
|
|
|
namespace Microsoft.PowerToys.Settings.UI.ViewModels
|
|
|
|
|
{
|
2020-03-25 10:55:02 +08:00
|
|
|
|
using System;
|
|
|
|
|
using System.Collections.Generic;
|
|
|
|
|
using System.Linq;
|
|
|
|
|
using System.Threading.Tasks;
|
|
|
|
|
using System.Windows.Input;
|
|
|
|
|
using Microsoft.PowerToys.Settings.UI.Helpers;
|
|
|
|
|
using Microsoft.PowerToys.Settings.UI.Services;
|
|
|
|
|
using Windows.System;
|
|
|
|
|
using Windows.UI.Xaml.Controls;
|
|
|
|
|
using Windows.UI.Xaml.Input;
|
|
|
|
|
using Windows.UI.Xaml.Navigation;
|
|
|
|
|
using WinUI = Microsoft.UI.Xaml.Controls;
|
|
|
|
|
|
2020-03-12 01:43:32 +08:00
|
|
|
|
public class ShellViewModel : Observable
|
|
|
|
|
{
|
|
|
|
|
private readonly KeyboardAccelerator _altLeftKeyboardAccelerator = BuildKeyboardAccelerator(VirtualKey.Left, VirtualKeyModifiers.Menu);
|
2020-03-25 10:55:02 +08:00
|
|
|
|
|
2020-03-12 01:43:32 +08:00
|
|
|
|
private readonly KeyboardAccelerator _backKeyboardAccelerator = BuildKeyboardAccelerator(VirtualKey.GoBack);
|
|
|
|
|
|
|
|
|
|
private bool _isBackEnabled;
|
|
|
|
|
private IList<KeyboardAccelerator> _keyboardAccelerators;
|
|
|
|
|
private WinUI.NavigationView _navigationView;
|
|
|
|
|
private WinUI.NavigationViewItem _selected;
|
|
|
|
|
private ICommand _loadedCommand;
|
|
|
|
|
private ICommand _itemInvokedCommand;
|
|
|
|
|
|
|
|
|
|
public bool IsBackEnabled
|
|
|
|
|
{
|
|
|
|
|
get { return _isBackEnabled; }
|
|
|
|
|
set { Set(ref _isBackEnabled, value); }
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public WinUI.NavigationViewItem Selected
|
|
|
|
|
{
|
|
|
|
|
get { return _selected; }
|
|
|
|
|
set { Set(ref _selected, value); }
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public ICommand LoadedCommand => _loadedCommand ?? (_loadedCommand = new RelayCommand(OnLoaded));
|
|
|
|
|
|
|
|
|
|
public ICommand ItemInvokedCommand => _itemInvokedCommand ?? (_itemInvokedCommand = new RelayCommand<WinUI.NavigationViewItemInvokedEventArgs>(OnItemInvoked));
|
|
|
|
|
|
|
|
|
|
public ShellViewModel()
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public void Initialize(Frame frame, WinUI.NavigationView navigationView, IList<KeyboardAccelerator> keyboardAccelerators)
|
|
|
|
|
{
|
|
|
|
|
_navigationView = navigationView;
|
|
|
|
|
_keyboardAccelerators = keyboardAccelerators;
|
|
|
|
|
NavigationService.Frame = frame;
|
|
|
|
|
NavigationService.NavigationFailed += Frame_NavigationFailed;
|
|
|
|
|
NavigationService.Navigated += Frame_Navigated;
|
|
|
|
|
_navigationView.BackRequested += OnBackRequested;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private async void OnLoaded()
|
|
|
|
|
{
|
|
|
|
|
// Keyboard accelerators are added here to avoid showing 'Alt + left' tooltip on the page.
|
|
|
|
|
// More info on tracking issue https://github.com/Microsoft/microsoft-ui-xaml/issues/8
|
|
|
|
|
_keyboardAccelerators.Add(_altLeftKeyboardAccelerator);
|
|
|
|
|
_keyboardAccelerators.Add(_backKeyboardAccelerator);
|
|
|
|
|
await Task.CompletedTask;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private void OnItemInvoked(WinUI.NavigationViewItemInvokedEventArgs args)
|
|
|
|
|
{
|
|
|
|
|
var item = _navigationView.MenuItems
|
|
|
|
|
.OfType<WinUI.NavigationViewItem>()
|
|
|
|
|
.First(menuItem => (string)menuItem.Content == (string)args.InvokedItem);
|
|
|
|
|
var pageType = item.GetValue(NavHelper.NavigateToProperty) as Type;
|
|
|
|
|
NavigationService.Navigate(pageType);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private void OnBackRequested(WinUI.NavigationView sender, WinUI.NavigationViewBackRequestedEventArgs args)
|
|
|
|
|
{
|
|
|
|
|
NavigationService.GoBack();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private void Frame_NavigationFailed(object sender, NavigationFailedEventArgs e)
|
|
|
|
|
{
|
|
|
|
|
throw e.Exception;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private void Frame_Navigated(object sender, NavigationEventArgs e)
|
|
|
|
|
{
|
|
|
|
|
IsBackEnabled = NavigationService.CanGoBack;
|
|
|
|
|
Selected = _navigationView.MenuItems
|
|
|
|
|
.OfType<WinUI.NavigationViewItem>()
|
|
|
|
|
.FirstOrDefault(menuItem => IsMenuItemForPageType(menuItem, e.SourcePageType));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private bool IsMenuItemForPageType(WinUI.NavigationViewItem menuItem, Type sourcePageType)
|
|
|
|
|
{
|
|
|
|
|
var pageType = menuItem.GetValue(NavHelper.NavigateToProperty) as Type;
|
|
|
|
|
return pageType == sourcePageType;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private static KeyboardAccelerator BuildKeyboardAccelerator(VirtualKey key, VirtualKeyModifiers? modifiers = null)
|
|
|
|
|
{
|
|
|
|
|
var keyboardAccelerator = new KeyboardAccelerator() { Key = key };
|
|
|
|
|
if (modifiers.HasValue)
|
|
|
|
|
{
|
|
|
|
|
keyboardAccelerator.Modifiers = modifiers.Value;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
keyboardAccelerator.Invoked += OnKeyboardAcceleratorInvoked;
|
|
|
|
|
return keyboardAccelerator;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private static void OnKeyboardAcceleratorInvoked(KeyboardAccelerator sender, KeyboardAcceleratorInvokedEventArgs args)
|
|
|
|
|
{
|
|
|
|
|
var result = NavigationService.GoBack();
|
|
|
|
|
args.Handled = result;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|