69 lines
2 KiB
C#
69 lines
2 KiB
C#
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using System.Windows.Threading;
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namespace TeamsISO.App.ViewModels;
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/// <summary>
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/// Lightweight transient-notification view-model. The main view holds a single
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/// instance bound to a small overlay at the bottom of the content area.
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/// <see cref="Show"/> displays a message for a fixed duration before auto-hiding;
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/// successive Show calls reset the timer instead of stacking, so the user always
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/// sees the most recent action's feedback.
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/// </summary>
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public sealed class ToastViewModel : ObservableObject
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{
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private readonly DispatcherTimer _hideTimer;
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private string _message = string.Empty;
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private bool _isVisible;
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private string _accent = "Wd.Accent.Cyan";
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public ToastViewModel(Dispatcher dispatcher)
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{
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_hideTimer = new DispatcherTimer(DispatcherPriority.Background, dispatcher)
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{
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Interval = TimeSpan.FromSeconds(3),
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};
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_hideTimer.Tick += (_, _) =>
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{
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_hideTimer.Stop();
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IsVisible = false;
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};
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}
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public string Message
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{
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get => _message;
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private set => SetField(ref _message, value);
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}
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public bool IsVisible
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{
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get => _isVisible;
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private set => SetField(ref _isVisible, value);
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}
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/// <summary>
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/// Brush resource key for the accent dot. "Wd.Accent.Cyan" for success-style
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/// (default), "Wd.Accent.Coral" for warnings.
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/// </summary>
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public string Accent
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{
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get => _accent;
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private set => SetField(ref _accent, value);
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}
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/// <summary>Show a success-style toast for ~3 seconds.</summary>
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public void Show(string message) => ShowImpl(message, "Wd.Accent.Cyan");
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/// <summary>Show a warning-style toast (coral accent) for ~3 seconds.</summary>
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public void Warn(string message) => ShowImpl(message, "Wd.Accent.Coral");
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private void ShowImpl(string message, string accentKey)
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{
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Message = message;
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Accent = accentKey;
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IsVisible = true;
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_hideTimer.Stop();
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_hideTimer.Start();
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}
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}
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