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Using CancellationToken

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This commit is contained in:
Ádám Kovács
2022-02-04 00:17:03 +01:00
parent 3f8309dc0f
commit 2e832f72d2
23 changed files with 1509 additions and 147 deletions
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30
src/GuiApp/FileTime.Avalonia/ViewModels/ContainerViewModel.cs
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@@ -10,6 +10,7 @@ using System.Linq;
using System.Text;
using System.Threading.Tasks;
using FileTime.Avalonia.Application;
using System.Threading;
namespace FileTime.Avalonia.ViewModels
{
@@ -130,21 +131,22 @@ namespace FileTime.Avalonia.ViewModels
public void InvalidateDisplayName() => OnPropertyChanged(nameof(DisplayName));
public async Task Init(bool initializeChildren = true)
public async Task Init(bool initializeChildren = true, CancellationToken token = default)
{
await Refresh(initializeChildren);
await Refresh(initializeChildren, token);
}
private async Task Container_Refreshed(object? sender, AsyncEventArgs e)
private async Task Container_Refreshed(object? sender, AsyncEventArgs e, CancellationToken token = default)
{
await Refresh(false);
await Refresh(false, token);
}
[Obsolete($"Use the parametrizable version of {nameof(Refresh)}.")]
private async Task Refresh()
{
await Refresh(true);
}
private async Task Refresh(bool initializeChildren)
private async Task Refresh(bool initializeChildren, CancellationToken token = default)
{
if (_isRefreshing) return;
@@ -157,6 +159,9 @@ namespace FileTime.Avalonia.ViewModels
var containers = (await _container.GetContainers())!.Select(c => AdoptOrReuseOrCreateItem(c, (c2) => new ContainerViewModel(_newItemProcessor, this, c2, ItemNameConverterService))).ToList();
var elements = (await _container.GetElements())!.Select(e => AdoptOrReuseOrCreateItem(e, (e2) => new ElementViewModel(e2, this, ItemNameConverterService))).ToList();
if (token.IsCancellationRequested) return;
Exceptions = new List<Exception>(_container.Exceptions);
foreach (var containerToRemove in _containers.Except(containers))
@@ -168,7 +173,8 @@ namespace FileTime.Avalonia.ViewModels
{
foreach (var container in containers)
{
await container.Init(false);
if (token.IsCancellationRequested) return;
await container.Init(false, token);
}
}
@@ -220,21 +226,21 @@ namespace FileTime.Avalonia.ViewModels
_items = new ObservableCollection<IItemViewModel>();
}
public async Task<ObservableCollection<ContainerViewModel>> GetContainers()
public async Task<ObservableCollection<ContainerViewModel>> GetContainers(CancellationToken token = default)
{
if (!_isInitialized) await Task.Run(Refresh);
if (!_isInitialized) await Task.Run(async () => await Refresh(false, token), token);
return _containers;
}
public async Task<ObservableCollection<ElementViewModel>> GetElements()
public async Task<ObservableCollection<ElementViewModel>> GetElements(CancellationToken token = default)
{
if (!_isInitialized) await Task.Run(Refresh);
if (!_isInitialized) await Task.Run(async () => await Refresh(false, token), token);
return _elements;
}
public async Task<ObservableCollection<IItemViewModel>> GetItems()
public async Task<ObservableCollection<IItemViewModel>> GetItems(CancellationToken token = default)
{
if (!_isInitialized) await Task.Run(Refresh);
if (!_isInitialized) await Task.Run(async () => await Refresh(false, token), token);
return _items;
}