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fix: fix scroll button memory leakage.

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This commit is contained in:
Dong Bin
2025-03-19 20:32:08 +08:00
parent fac49a660e
commit 38dd4642d1
1 changed files with 11 additions and 5 deletions
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16
src/Ursa/Controls/ScrollTo/ScrollToButton.cs
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@@ -2,6 +2,7 @@ using Avalonia;
using Avalonia.Controls; using Avalonia.Controls;
using Avalonia.Interactivity; using Avalonia.Interactivity;
using Avalonia.VisualTree; using Avalonia.VisualTree;
using Irihi.Avalonia.Shared.Helpers;
using Ursa.Common; using Ursa.Common;
namespace Ursa.Controls; namespace Ursa.Controls;
@@ -54,11 +55,17 @@ public class ScrollToButton: Button
} }
_scroll = scroll; _scroll = scroll;
_disposable = ScrollViewer.OffsetProperty.Changed.AddClassHandler<ScrollViewer, Vector>(OnScrollChanged); _disposable = _scroll?.GetObservable(ScrollViewer.OffsetProperty).Subscribe(OnScrollChanged);
SetVisibility(Direction, _scroll?.Offset); SetVisibility(Direction, _scroll?.Offset);
} }
} }
protected override void OnUnloaded(RoutedEventArgs e)
{
base.OnUnloaded(e);
_disposable?.Dispose();
}
protected override void OnClick() protected override void OnClick()
{ {
if (_scroll is null) return; if (_scroll is null) return;
@@ -83,14 +90,13 @@ public class ScrollToButton: Button
_scroll = null; _scroll = null;
} }
_scroll = scroll; _scroll = scroll;
_disposable = ScrollViewer.OffsetProperty.Changed.AddClassHandler<ScrollViewer, Vector>(OnScrollChanged); _disposable = _scroll?.GetObservable(ScrollViewer.OffsetProperty).Subscribe(OnScrollChanged);
SetVisibility(Direction, _scroll?.Offset); SetVisibility(Direction, _scroll?.Offset);
} }
private void OnScrollChanged(ScrollViewer arg1, AvaloniaPropertyChangedEventArgs<Vector> arg2) private void OnScrollChanged(Vector arg2)
{ {
if (arg1 != _scroll) return; SetVisibility(Direction, arg2);
SetVisibility(Direction, arg2.NewValue.Value);
} }
private void SetVisibility(Position direction, Vector? vector) private void SetVisibility(Position direction, Vector? vector)