68 lines
1.9 KiB
C#
68 lines
1.9 KiB
C#
using System;
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using Avalonia;
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using Avalonia.Controls;
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using Avalonia.Interactivity;
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using ReactiveUI;
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namespace DispenserUI.Views.Controls;
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/// <summary>
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/// 按钮 with 加载中动画
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/// </summary>
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public class LoadingButton : Button
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{
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public static readonly StyledProperty<bool> IsLoadingProperty =
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AvaloniaProperty.Register<LoadingButton, bool>(nameof(IsLoading));
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private bool _isCommandExecuting;
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static LoadingButton()
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{
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// Register the IsLoading property to trigger a pseudo-class when it changes
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IsLoadingProperty.Changed.AddClassHandler<LoadingButton>((x, e) => x.UpdatePseudoClasses());
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}
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public LoadingButton()
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{
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// Assign the default style of the button from 'LoadingButton.xaml'
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this.GetObservable(ContentProperty).Subscribe(_ => UpdatePseudoClasses());
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ClickEvent.AddClassHandler<LoadingButton>((x, e) => x.OnDebounceClick(e), RoutingStrategies.Bubble);
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}
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public bool IsLoading
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{
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get => GetValue(IsLoadingProperty);
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set => SetValue(IsLoadingProperty, value);
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}
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private void UpdatePseudoClasses()
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{
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PseudoClasses.Set(":loading", IsLoading);
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}
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private void OnDebounceClick(RoutedEventArgs e)
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{
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if (Command is not IReactiveCommand command) return;
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if (_isCommandExecuting || Command == null) return;
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command.IsExecuting.Subscribe(x =>
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{
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if (x) return;
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_isCommandExecuting = false;
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SetCurrentValue(IsLoadingProperty, false);
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e.Handled = true;
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},
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ex => { },
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() => { });
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var commandParameter = CommandParameter;
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// 检查命令是否可以执行
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if (!Command.CanExecute(commandParameter)) return;
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_isCommandExecuting = true;
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SetCurrentValue(IsLoadingProperty, true);
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// 执行命令
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Command.Execute(commandParameter);
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}
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} |