91 lines
2.9 KiB
C#
91 lines
2.9 KiB
C#
using Avalonia;
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using Avalonia.Controls;
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using Avalonia.Controls.Metadata;
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using Avalonia.Controls.Primitives;
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using Avalonia.Controls.Templates;
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using Avalonia.Layout;
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using Ursa.Common;
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namespace Ursa.Controls;
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[PseudoClasses(PC_Right, PC_Left, PC_Top, PC_Bottom, PC_Empty)]
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public class IconButton: Button
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{
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public const string PC_Right = ":right";
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public const string PC_Left = ":left";
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public const string PC_Top = ":top";
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public const string PC_Bottom = ":bottom";
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public const string PC_Empty = ":empty";
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public static readonly StyledProperty<object?> IconProperty = AvaloniaProperty.Register<IconButton, object?>(
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nameof(Icon));
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public object? Icon
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{
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get => GetValue(IconProperty);
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set => SetValue(IconProperty, value);
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}
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public static readonly StyledProperty<IDataTemplate?> IconTemplateProperty = AvaloniaProperty.Register<IconButton, IDataTemplate?>(
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nameof(IconTemplate));
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public IDataTemplate? IconTemplate
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{
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get => GetValue(IconTemplateProperty);
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set => SetValue(IconTemplateProperty, value);
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}
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public static readonly StyledProperty<bool> IsLoadingProperty = AvaloniaProperty.Register<IconButton, bool>(
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nameof(IsLoading));
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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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public static readonly StyledProperty<Position> IconPlacementProperty = AvaloniaProperty.Register<IconButton, Position>(
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nameof(IconPlacement), defaultValue: Position.Left);
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public Position IconPlacement
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{
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get => GetValue(IconPlacementProperty);
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set => SetValue(IconPlacementProperty, value);
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}
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static IconButton()
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{
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IconPlacementProperty.Changed.AddClassHandler<IconButton, Position>((o, e) =>
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{
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o.SetPlacement(e.NewValue.Value, o.Icon);
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});
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IconProperty.Changed.AddClassHandler<IconButton, object?>((o, e) =>
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{
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o.SetPlacement(o.IconPlacement, e.NewValue.Value);
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});
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}
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protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
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{
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base.OnApplyTemplate(e);
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SetPlacement(IconPlacement, Icon);
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}
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private void SetPlacement(Position placement, object? icon)
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{
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if (icon is null)
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{
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PseudoClasses.Set(PC_Empty, true);
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PseudoClasses.Set(PC_Left, false);
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PseudoClasses.Set(PC_Right, false);
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PseudoClasses.Set(PC_Top, false);
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PseudoClasses.Set(PC_Bottom, false);
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return;
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}
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PseudoClasses.Set(PC_Empty, false);
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PseudoClasses.Set(PC_Left, placement == Position.Left);
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PseudoClasses.Set(PC_Right, placement == Position.Right);
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PseudoClasses.Set(PC_Top, placement == Position.Top);
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PseudoClasses.Set(PC_Bottom, placement == Position.Bottom);
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}
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} |