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This commit is contained in:
Tommy Öman
2025-10-12 08:39:06 +02:00
parent c00819bec6
commit 02a26871c6
15 changed files with 85 additions and 30 deletions
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29
GreadyPoang.Common/Specifics/EventToCommandBehavior.cs
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@ -4,7 +4,7 @@ using System.Windows.Input;
namespace GreadyPoang.Common;
public class EventToCommandBehavior : BehaviorBase<VisualElement>
{
public string EventName { get; set; }
public required string EventName { get; set; }
public static readonly BindableProperty CommandProperty =
BindableProperty.Create(nameof(Command), typeof(ICommand), typeof(EventToCommandBehavior));
@ -15,8 +15,9 @@ public class EventToCommandBehavior : BehaviorBase<VisualElement>
set => SetValue(CommandProperty, value);
}
private EventInfo eventInfo;
private Delegate eventHandler;
// Fix for CS8618: Make the field nullable and fix IDE1006: Add '_' prefix
private EventInfo? _eventInfo;
private Delegate? _eventHandler;
protected override void OnAttachedTo(VisualElement bindable)
{
@ -25,21 +26,29 @@ public class EventToCommandBehavior : BehaviorBase<VisualElement>
if (bindable == null || string.IsNullOrEmpty(EventName))
return;
eventInfo = bindable.GetType().GetRuntimeEvent(EventName);
if (eventInfo == null)
var runtimeEvent = bindable.GetType().GetRuntimeEvent(EventName);
if (runtimeEvent == null)
throw new ArgumentException($"Event '{EventName}' not found on type '{bindable.GetType().Name}'");
MethodInfo methodInfo = typeof(EventToCommandBehavior).GetTypeInfo().GetDeclaredMethod(nameof(OnEvent));
eventHandler = methodInfo.CreateDelegate(eventInfo.EventHandlerType, this);
eventInfo.AddEventHandler(bindable, eventHandler);
_eventInfo = runtimeEvent;
MethodInfo? methodInfo = typeof(EventToCommandBehavior).GetTypeInfo().GetDeclaredMethod(nameof(OnEvent));
if (methodInfo == null)
throw new InvalidOperationException($"Method '{nameof(OnEvent)}' not found on type '{typeof(EventToCommandBehavior).Name}'");
if (_eventInfo.EventHandlerType == null)
throw new InvalidOperationException($"EventHandlerType for event '{EventName}' is null on type '{bindable.GetType().Name}'");
_eventHandler = methodInfo.CreateDelegate(_eventInfo.EventHandlerType, this);
_eventInfo.AddEventHandler(bindable, _eventHandler);
}
protected override void OnDetachingFrom(VisualElement bindable)
{
base.OnDetachingFrom(bindable);
if (eventInfo != null && eventHandler != null)
eventInfo.RemoveEventHandler(bindable, eventHandler);
if (_eventInfo != null && _eventHandler != null)
_eventInfo.RemoveEventHandler(bindable, _eventHandler);
}
private void OnEvent(object sender, object eventArgs)