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Code Issues Projects Releases Packages Wiki Activity Actions

Use a lock when opening dialogs

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This commit is contained in:
Oleksii Holub 2022-04-09 03:17:30 +03:00
parent 0e138bac7d
commit a44d43eefc
1 changed files with 20 additions and 7 deletions
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27
DiscordChatExporter.Gui/ViewModels/Framework/DialogManager.cs
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@ -1,5 +1,6 @@
using System; using System;
using System.IO; using System.IO;
using System.Threading;
using System.Threading.Tasks; using System.Threading.Tasks;
using MaterialDesignThemes.Wpf; using MaterialDesignThemes.Wpf;
using Microsoft.Win32; using Microsoft.Win32;
@ -8,9 +9,10 @@ using Stylet;
namespace DiscordChatExporter.Gui.ViewModels.Framework; namespace DiscordChatExporter.Gui.ViewModels.Framework;
public class DialogManager public class DialogManager : IDisposable
{ {
private readonly IViewManager _viewManager; private readonly IViewManager _viewManager;
private readonly SemaphoreSlim _dialogLock = new(1, 1);
public DialogManager(IViewManager viewManager) public DialogManager(IViewManager viewManager)
{ {
@ -21,20 +23,26 @@ public class DialogManager
{ {
var view = _viewManager.CreateAndBindViewForModelIfNecessary(dialogScreen); var view = _viewManager.CreateAndBindViewForModelIfNecessary(dialogScreen);
void OnDialogOpened(object? sender, DialogOpenedEventArgs openArgs) void OnDialogOpened(object? openSender, DialogOpenedEventArgs openArgs)
{ {
void OnScreenClosed(object? o, EventArgs closeArgs) void OnScreenClosed(object? closeSender, EventArgs args)
{ {
openArgs.Session.Close(); openArgs.Session.Close();
dialogScreen.Closed -= OnScreenClosed; dialogScreen.Closed -= OnScreenClosed;
} }
dialogScreen.Closed += OnScreenClosed; dialogScreen.Closed += OnScreenClosed;
} }
await DialogHost.Show(view, OnDialogOpened); await _dialogLock.WaitAsync();
try
return dialogScreen.DialogResult; {
await DialogHost.Show(view, OnDialogOpened);
return dialogScreen.DialogResult;
}
finally
{
_dialogLock.Release();
}
} }
public string? PromptSaveFilePath(string filter = "All files|*.*", string defaultFilePath = "") public string? PromptSaveFilePath(string filter = "All files|*.*", string defaultFilePath = "")
@ -59,4 +67,9 @@ public class DialogManager
return dialog.ShowDialog() == true ? dialog.SelectedPath : null; return dialog.ShowDialog() == true ? dialog.SelectedPath : null;
} }
public void Dispose()
{
_dialogLock.Dispose();
}
} }