127 lines
3.1 KiB
C#
127 lines
3.1 KiB
C#
using System.Diagnostics.CodeAnalysis;
|
|
|
|
using Microsoft.UI.Xaml.Controls;
|
|
using Microsoft.UI.Xaml.Navigation;
|
|
|
|
using RustTools.Contracts.Services;
|
|
using RustTools.Contracts.ViewModels;
|
|
using RustTools.Helpers;
|
|
|
|
namespace RustTools.Services;
|
|
|
|
// For more information on navigation between pages see
|
|
// https://github.com/microsoft/TemplateStudio/blob/main/docs/WinUI/navigation.md
|
|
public class NavigationService : INavigationService
|
|
{
|
|
private readonly IPageService _pageService;
|
|
private object? _lastParameterUsed;
|
|
private Frame? _frame;
|
|
|
|
public event NavigatedEventHandler? Navigated;
|
|
|
|
public Frame? Frame
|
|
{
|
|
get
|
|
{
|
|
if (_frame == null)
|
|
{
|
|
_frame = App.MainWindow.Content as Frame;
|
|
RegisterFrameEvents();
|
|
}
|
|
|
|
return _frame;
|
|
}
|
|
|
|
set
|
|
{
|
|
UnregisterFrameEvents();
|
|
_frame = value;
|
|
RegisterFrameEvents();
|
|
}
|
|
}
|
|
|
|
[MemberNotNullWhen(true, nameof(Frame), nameof(_frame))]
|
|
public bool CanGoBack => Frame != null && Frame.CanGoBack;
|
|
|
|
public NavigationService(IPageService pageService)
|
|
{
|
|
_pageService = pageService;
|
|
}
|
|
|
|
private void RegisterFrameEvents()
|
|
{
|
|
if (_frame != null)
|
|
{
|
|
_frame.Navigated += OnNavigated;
|
|
}
|
|
}
|
|
|
|
private void UnregisterFrameEvents()
|
|
{
|
|
if (_frame != null)
|
|
{
|
|
_frame.Navigated -= OnNavigated;
|
|
}
|
|
}
|
|
|
|
public bool GoBack()
|
|
{
|
|
if (CanGoBack)
|
|
{
|
|
var vmBeforeNavigation = _frame.GetPageViewModel();
|
|
_frame.GoBack();
|
|
if (vmBeforeNavigation is INavigationAware navigationAware)
|
|
{
|
|
navigationAware.OnNavigatedFrom();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public bool NavigateTo(string pageKey, object? parameter = null, bool clearNavigation = false)
|
|
{
|
|
var pageType = _pageService.GetPageType(pageKey);
|
|
|
|
if (_frame != null && (_frame.Content?.GetType() != pageType || (parameter != null && !parameter.Equals(_lastParameterUsed))))
|
|
{
|
|
_frame.Tag = clearNavigation;
|
|
var vmBeforeNavigation = _frame.GetPageViewModel();
|
|
var navigated = _frame.Navigate(pageType, parameter);
|
|
if (navigated)
|
|
{
|
|
_lastParameterUsed = parameter;
|
|
if (vmBeforeNavigation is INavigationAware navigationAware)
|
|
{
|
|
navigationAware.OnNavigatedFrom();
|
|
}
|
|
}
|
|
|
|
return navigated;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private void OnNavigated(object sender, NavigationEventArgs e)
|
|
{
|
|
if (sender is Frame frame)
|
|
{
|
|
var clearNavigation = (bool)frame.Tag;
|
|
if (clearNavigation)
|
|
{
|
|
frame.BackStack.Clear();
|
|
}
|
|
|
|
if (frame.GetPageViewModel() is INavigationAware navigationAware)
|
|
{
|
|
navigationAware.OnNavigatedTo(e.Parameter);
|
|
}
|
|
|
|
Navigated?.Invoke(sender, e);
|
|
}
|
|
}
|
|
}
|