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[#43] App: Use FileSystemWatcher to renew contexts on demand

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This commit is contained in:
Lorenz Stechauner
2024-03-19 13:17:06 +01:00
parent 98688168b8
commit 1806b02039
13 changed files with 51 additions and 66 deletions
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10
Elwig/App.xaml.cs
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@ -60,6 +60,10 @@ namespace Elwig {
public static ClientParameters Client { get; set; }
public static Dispatcher MainDispatcher { get; private set; }
private readonly FileSystemWatcher Watcher = new(Path.GetDirectoryName(Config.DatabaseFile) ?? "C:\\") {
NotifyFilter = NotifyFilters.LastWrite,
Filter = "*.sqlite3",
};
public App() : base() {
System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
@ -69,6 +73,12 @@ namespace Elwig {
Scales = [];
CurrentApp = this;
OverrideCulture();
Watcher.Changed += new FileSystemEventHandler(OnChanged);
Watcher.EnableRaisingEvents = true;
}
private void OnChanged(object source, FileSystemEventArgs e) {
MainDispatcher.BeginInvoke(async () => await HintContextChange());
}
private static void OverrideCulture() {

1
Elwig/Helpers/ClientParameters.cs
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@ -171,7 +171,6 @@ namespace Elwig.Helpers {
}
await cmd.ExecuteNonQueryAsync();
await App.HintContextChange();
}
}
}

2
Elwig/Windows/AdministrationWindow.cs
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@ -103,7 +103,7 @@ namespace Elwig.Windows {
abstract protected void UpdateButtons();
protected override async Task OnRenewContext() {
protected override async Task OnRenewContext(AppDbContext ctx) {
for (int i = 0; i < PlzInputs.Length; i++)
await UpdatePlz(PlzInputs[i], PlzOrtInputs[i]);
}

5
Elwig/Windows/AreaComAdminWindow.xaml.cs
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@ -189,9 +189,8 @@ namespace Elwig.Windows {
ValidateRequiredInputs();
}
protected override async Task OnRenewContext() {
await base.OnRenewContext();
using var ctx = new AppDbContext();
protected override async Task OnRenewContext(AppDbContext ctx) {
await base.OnRenewContext(ctx);
ControlUtils.RenewItemsSource(KgInput, await ctx.WbKgs
.Include(k => k.AtKg.WbKg!.Rds)
.Select(k => k.AtKg)

5
Elwig/Windows/BaseDataWindow.xaml.cs
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@ -131,9 +131,8 @@ namespace Elwig.Windows {
LockInputs();
}
protected override async Task OnRenewContext() {
await base.OnRenewContext();
using var ctx = new AppDbContext();
protected override async Task OnRenewContext(AppDbContext ctx) {
await base.OnRenewContext(ctx);
FillInputs(App.Client);
ControlUtils.RenewItemsSource(SeasonList, await ctx.Seasons
.OrderByDescending(s => s.Year)

7
Elwig/Windows/ChartWindow.xaml.cs
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@ -100,8 +100,7 @@ namespace Elwig.Windows {
SaveButton.IsEnabled = hasChanged;
}
private async Task RefreshGraphList() {
using var ctx = new AppDbContext();
private async Task RefreshGraphList(AppDbContext ctx) {
PaymentVar = await ctx.PaymentVariants.FindAsync(Year, AvNr) ?? throw new ArgumentException("PaymentVar not found");
Season = await ctx.Seasons.FindAsync(Year) ?? throw new ArgumentException("Season not found");
@ -201,8 +200,8 @@ namespace Elwig.Windows {
FillingInputs = false;
}
protected override async Task OnRenewContext() {
await RefreshGraphList();
protected override async Task OnRenewContext(AppDbContext ctx) {
await RefreshGraphList(ctx);
}
private void InitPlot() {

25
Elwig/Windows/ContextWindow.cs
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@ -2,25 +2,14 @@ using Elwig.Helpers;
using System;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Threading;
namespace Elwig.Windows {
public abstract class ContextWindow : Window {
public static readonly int RenewSec = 10;
protected AppDbContext Context { get; private set; }
protected bool LockContext { get; set; } = false;
private readonly DispatcherTimer _timer;
private bool _renewPending = false;
public ContextWindow() : base() {
_timer = new DispatcherTimer();
_timer.Tick += new EventHandler(OnShouldRenewContext);
_timer.Interval = new TimeSpan(0, 0, RenewSec);
_timer.Start();
Context = new();
Loaded += OnLoaded;
}
@ -30,22 +19,18 @@ namespace Elwig.Windows {
await RenewContext();
}
private async void OnShouldRenewContext(object? sender, EventArgs? evt) {
if (!Context.HasBackendChanged) return;
await HintContextChange();
}
protected async void OnLoaded(object? sender, RoutedEventArgs? evt) {
await OnRenewContext();
using var ctx = new AppDbContext();
await OnRenewContext(ctx);
}
protected async Task RenewContext() {
if (!_renewPending) return;
Context = new();
await OnRenewContext();
using var ctx = new AppDbContext();
await OnRenewContext(ctx);
_renewPending = false;
}
abstract protected Task OnRenewContext();
abstract protected Task OnRenewContext(AppDbContext ctx);
}
}

5
Elwig/Windows/DeliveryAdminWindow.xaml.cs
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@ -795,9 +795,8 @@ namespace Elwig.Windows {
StatusVarieties.ToolTip = StatusVarieties.Text;
}
protected override async Task OnRenewContext() {
await base.OnRenewContext();
using var ctx = new AppDbContext();
protected override async Task OnRenewContext(AppDbContext ctx) {
await base.OnRenewContext(ctx);
if (Member != null) {
if (await GetMemberAsync(Member.MgNr) is not Member m) {

3
Elwig/Windows/MailWindow.xaml.cs
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@ -127,8 +127,7 @@ namespace Elwig.Windows {
EmailBodyInput.Text = App.Client.TextEmailBody ?? "Sehr geehrtes Mitglied,\n\nim Anhang finden Sie das aktuelle Rundschreiben.\n\nIhre Winzergenossenschaft\n";
}
protected override async Task OnRenewContext() {
using var ctx = new AppDbContext();
protected override async Task OnRenewContext(AppDbContext ctx) {
var season = await ctx.Seasons.FindAsync(Year);
var l = new List<string> {
MemberDataSheet.Name

5
Elwig/Windows/MemberAdminWindow.xaml.cs
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@ -264,9 +264,8 @@ namespace Elwig.Windows {
ValidateRequiredInputs();
}
protected override async Task OnRenewContext() {
await base.OnRenewContext();
using var ctx = new AppDbContext();
protected override async Task OnRenewContext(AppDbContext ctx) {
await base.OnRenewContext(ctx);
ControlUtils.RenewItemsSource(BranchInput, await ctx.Branches.OrderBy(b => b.Name).ToListAsync());
ControlUtils.RenewItemsSource(DefaultKgInput, await ctx.WbKgs.Select(k => k.AtKg).OrderBy(k => k.Name).ToListAsync());
await RefreshMemberList();

4
Elwig/Windows/OriginHierarchyWindow.xaml.cs
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@ -20,8 +20,7 @@ namespace Elwig.Windows {
DeactivateKgButton.IsEnabled = false;
}
protected override async Task OnRenewContext() {
using (var ctx = new AppDbContext()) {
protected override async Task OnRenewContext(AppDbContext ctx) {
var origins = (await ctx.WineOrigins
.Include("Gems.AtGem.Kgs.WbKg.Gl")
.AsSplitQuery()
@ -44,7 +43,6 @@ namespace Elwig.Windows {
.AsSplitQuery()
.ToListAsync();
ControlUtils.RenewItemsSource(WbGls, gls, WbGls_SelectionChanged, ControlUtils.RenewSourceDefault.First);
}
UpdateWbGems();
UpdateWbKgs();
UpdateWbGlKgs();

3
Elwig/Windows/PaymentVariantsWindow.xaml.cs
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@ -36,8 +36,7 @@ namespace Elwig.Windows {
}
}
protected override async Task OnRenewContext() {
using var ctx = new AppDbContext();
protected override async Task OnRenewContext(AppDbContext ctx) {
ControlUtils.RenewItemsSource(PaymentVariantList, await ctx.PaymentVariants
.Where(v => v.Year == Year)
.OrderBy(v => v.AvNr)

2
Elwig/Windows/SeasonFinishWindow.xaml.cs
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@ -19,7 +19,7 @@ namespace Elwig.Windows {
SeasonInput.Value = Utils.CurrentLastSeason;
}
protected override Task OnRenewContext() {
protected override Task OnRenewContext(AppDbContext ctx) {
SeasonInput_ValueChanged(null, null);
return Task.CompletedTask;
}