feat: add more properties.

2024-02-18 17:10:59 +08:00
parent 14c7e6b21f
commit 66835a8efa
8 changed files with 232 additions and 127 deletions
--- a/src/Ursa/Controls/Form/Form.cs
+++ b/src/Ursa/Controls/Form/Form.cs
@@ -1,59 +1,65 @@
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Controls.Metadata;
+using Avalonia.Layout;
 using Ursa.Common;

 namespace Ursa.Controls;

+[PseudoClasses(PC_FixedWidth)]
 public class Form: ItemsControl
 {
-    #region Attached Properties
-
-    public static readonly AttachedProperty<object?> LabelProperty =
-        AvaloniaProperty.RegisterAttached<Form, Control, object?>("Label");
-    public static void SetLabel(Control obj, object? value) => obj.SetValue(LabelProperty, value);
-    public static object? GetLabel(Control obj) => obj.GetValue(LabelProperty);
+    public const string PC_FixedWidth = ":fixed-width";
    
+    public static readonly StyledProperty<GridLength> LabelWidthProperty = AvaloniaProperty.Register<Form, GridLength>(
+        nameof(LabelWidth));

-    public static readonly AttachedProperty<bool> IsRequiredProperty =
-        AvaloniaProperty.RegisterAttached<Form, Control, bool>("IsRequired");
-    public static void SetIsRequired(Control obj, bool value) => obj.SetValue(IsRequiredProperty, value);
-    public static bool GetIsRequired(Control obj) => obj.GetValue(IsRequiredProperty);
-
-    public static readonly AttachedProperty<GridLength> LabelWidthProperty =
-        AvaloniaProperty.RegisterAttached<Form, Control, GridLength>("LabelWidth");
-
-    public static void SetLabelWidth(Control obj, GridLength value) => obj.SetValue(LabelWidthProperty, value);
-    public static GridLength GetLabelWidth(Control obj) => obj.GetValue(LabelWidthProperty);
-
-    #endregion
-    
+    /// <summary>
+    /// Behavior:
+    /// <para>Fixed Width: all labels are with fixed length. </para>
+    /// <para>Star: all labels are aligned by max length. </para>
+    /// <para>Auto: labels are not aligned. </para>
+    /// </summary>
+    public GridLength LabelWidth
+    {
+        get => GetValue(LabelWidthProperty);
+        set => SetValue(LabelWidthProperty, value);
+    }

    public static readonly StyledProperty<Position> LabelPositionProperty = AvaloniaProperty.Register<Form, Position>(
-        nameof(LabelPosition));
-    /// <summary>
-    /// Only Left and Top work.
-    /// </summary>
+        nameof(LabelPosition), defaultValue: Position.Top);
+
    public Position LabelPosition
    {
        get => GetValue(LabelPositionProperty);
        set => SetValue(LabelPositionProperty, value);
    }

-    public static readonly StyledProperty<Position> LabelAlignmentProperty = AvaloniaProperty.Register<Form, Position>(
-        nameof(LabelAlignment));
-    /// <summary>
-    /// Only Left and Right work. 
-    /// </summary>
-    public Position LabelAlignment
+    public static readonly StyledProperty<HorizontalAlignment> LabelAlignmentProperty = AvaloniaProperty.Register<Form, HorizontalAlignment>(
+        nameof(LabelAlignment), defaultValue: HorizontalAlignment.Left);
+
+    public HorizontalAlignment LabelAlignment
    {
        get => GetValue(LabelAlignmentProperty);
        set => SetValue(LabelAlignmentProperty, value);
    }

+    static Form()
+    {
+        LabelWidthProperty.Changed.AddClassHandler<Form, GridLength>((x, args) => x.LabelWidthChanged(args));
+    }
+
+    private void LabelWidthChanged(AvaloniaPropertyChangedEventArgs<GridLength> args)
+    {
+        var newValue = args.NewValue.Value;
+        bool isFixed = newValue.IsStar || newValue.IsAbsolute;
+        PseudoClasses.Set(PC_FixedWidth, isFixed);
+    }
+
    protected override bool NeedsContainerOverride(object? item, int index, out object? recycleKey)
    {
        recycleKey = null;
-        return item is FormItem or FormGroup;
+        return item is not FormItem && item is not FormGroup;
    }
    
    protected override Control CreateContainerForItemOverride(object? item, int index, object? recycleKey)
@@ -62,27 +68,8 @@ public class Form: ItemsControl
        return new FormItem()
        {
            Content = control,
-            [!LabelProperty] = control.GetObservable(Form.LabelProperty).ToBinding(),
-            [!IsRequiredProperty] = control.GetObservable(Form.IsRequiredProperty).ToBinding(),
+            [!FormItem.LabelProperty] = control[!FormItem.LabelProperty],
+            [!FormItem.IsRequiredProperty] = control[!FormItem.IsRequiredProperty],
        };
    }
-
-    protected override void PrepareContainerForItemOverride(Control container, object? item, int index)
-    {
-        base.PrepareContainerForItemOverride(container, item, index);
-        if (container is FormGroup group)
-        {
-            if (!group.IsSet(FormGroup.LabelWidthProperty))
-            {
-                group[!LabelWidthProperty] = this.GetObservable(LabelWidthProperty).ToBinding();
-            }
-        }
-        else if (container is FormItem formItem)
-        {
-            if(!formItem.IsSet(FormItem.LabelWidthProperty))
-            {
-                formItem[!LabelWidthProperty] = this.GetObservable(LabelWidthProperty).ToBinding();
-            }
-        }
-    }
 }
--- a/src/Ursa/Controls/Form/FormGroup.cs
+++ b/src/Ursa/Controls/Form/FormGroup.cs
@@ -6,13 +6,6 @@ namespace Ursa.Controls;

 public class FormGroup: HeaderedItemsControl
 {
-    public static readonly StyledProperty<GridLength> LabelWidthProperty = Form.LabelWidthProperty.AddOwner<FormGroup>();
-
-    public GridLength LabelWidth
-    {
-        get => GetValue(LabelWidthProperty);
-        set => SetValue(LabelWidthProperty, value);
-    }
    protected override bool NeedsContainerOverride(object? item, int index, out object? recycleKey)
    {
        recycleKey = null;
@@ -25,17 +18,9 @@ public class FormGroup: HeaderedItemsControl
        return new FormItem
        {
            Content = control,
-            [!FormItem.LabelProperty] = control.GetObservable(Form.LabelProperty).ToBinding(),
-            [!FormItem.IsRequiredProperty] = control.GetObservable(Form.IsRequiredProperty).ToBinding(),
+            [!FormItem.LabelProperty] = control[!FormItem.LabelProperty],
+            [!FormItem.IsRequiredProperty] = control[!FormItem.IsRequiredProperty],
        };
    }
-
-    protected override void PrepareContainerForItemOverride(Control container, object? item, int index)
-    {
-        base.PrepareContainerForItemOverride(container, item, index);
-        if (container is FormItem formItem)
-        {
-            formItem.LabelWidth = LabelWidth;
-        }
-    }
+    
 }
--- a/src/Ursa/Controls/Form/FormItem.cs
+++ b/src/Ursa/Controls/Form/FormItem.cs
@@ -1,46 +1,93 @@
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Controls.Metadata;
 using Avalonia.Controls.Primitives;
+using Avalonia.Layout;
+using Avalonia.Reactive;
+using Avalonia.VisualTree;
+using Irihi.Avalonia.Shared.Helpers;
+using Ursa.Common;

 namespace Ursa.Controls;

+[PseudoClasses(PC_Horizontal, PC_NoLabel)]
 public class FormItem: ContentControl
 {
-    public static readonly StyledProperty<object?> LabelProperty = AvaloniaProperty.Register<FormItem, object?>(
-        nameof(Label));
+    public const string PC_Horizontal = ":horizontal";
+    public const string PC_NoLabel = ":no-label";
+    
+    #region Attached Properties
+    public static readonly AttachedProperty<object?> LabelProperty =
+        AvaloniaProperty.RegisterAttached<FormItem, Control, object?>("Label");
+    public static void SetLabel(Control obj, object? value) => obj.SetValue(LabelProperty, value);
+    public static object? GetLabel(Control obj) => obj.GetValue(LabelProperty);
+    

-    public object? Label
-    {
-        get => GetValue(LabelProperty);
-        set => SetValue(LabelProperty, value);
-    }
+    public static readonly AttachedProperty<bool> IsRequiredProperty =
+        AvaloniaProperty.RegisterAttached<FormItem, Control, bool>("IsRequired");
+    public static void SetIsRequired(Control obj, bool value) => obj.SetValue(IsRequiredProperty, value);
+    public static bool GetIsRequired(Control obj) => obj.GetValue(IsRequiredProperty);

-    public static readonly StyledProperty<bool> IsRequiredProperty = AvaloniaProperty.Register<FormItem, bool>(
-        nameof(IsRequired));
+    public static readonly AttachedProperty<bool> NoLabelProperty =
+        AvaloniaProperty.RegisterAttached<FormItem, Control, bool>("NoLabel");

-    public bool IsRequired
-    {
-        get => GetValue(IsRequiredProperty);
-        set => SetValue(IsRequiredProperty, value);
-    }
+    public static void SetNoLabel(Control obj, bool value) => obj.SetValue(NoLabelProperty, value);
+    public static bool GetNoLabel(Control obj) => obj.GetValue(NoLabelProperty);
+    #endregion
+    
+    private List<IDisposable> _formSubscriptions = new List<IDisposable>();

-    public static readonly StyledProperty<GridLength> LabelWidthProperty = AvaloniaProperty.Register<FormItem, GridLength>(
+    public static readonly StyledProperty<double> LabelWidthProperty = AvaloniaProperty.Register<FormItem, double>(
        nameof(LabelWidth));

-    public GridLength LabelWidth
+    public double LabelWidth
    {
        get => GetValue(LabelWidthProperty);
        set => SetValue(LabelWidthProperty, value);
    }
+
+    public static readonly StyledProperty<HorizontalAlignment> LabelAlignmentProperty = AvaloniaProperty.Register<FormItem, HorizontalAlignment>(
+        nameof(LabelAlignment));
+
+    public HorizontalAlignment LabelAlignment
+    {
+        get => GetValue(LabelAlignmentProperty);
+        set => SetValue(LabelAlignmentProperty, value);
+    }
    
    static FormItem()
    {
-        LabelWidthProperty.Changed.AddClassHandler<FormItem, GridLength>((x, args) => x.LabelWidthChanged(args));
+        PropertyToPseudoClassMixin.Attach<FormItem>(NoLabelProperty, PC_NoLabel);
    }

-    private void LabelWidthChanged(AvaloniaPropertyChangedEventArgs<GridLength> args)
+    protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
    {
-        GridLength? length = args.GetNewValue<GridLength>();
-        
+        base.OnAttachedToVisualTree(e);
+        var form = this.GetVisualAncestors().OfType<Form>().FirstOrDefault();
+        if (form is not null)
+        {
+            _formSubscriptions.Clear();
+            var labelSubscription = form
+                .GetObservable(Form.LabelWidthProperty)
+                .Subscribe(new AnonymousObserver<GridLength>(length => { LabelWidth = length.IsAbsolute ? length.Value : double.NaN; }));
+            var positionSubscription = form
+                .GetObservable(Form.LabelPositionProperty)
+                .Subscribe(new AnonymousObserver<Position>(position => { PseudoClasses.Set(PC_Horizontal, position == Position.Left);}));
+            var alignmentSubscription = form
+                .GetObservable(Form.LabelAlignmentProperty)
+                .Subscribe(new AnonymousObserver<HorizontalAlignment>(alignment => { LabelAlignment = alignment; }));
+            _formSubscriptions.Add(labelSubscription);
+            _formSubscriptions.Add(positionSubscription);
+            _formSubscriptions.Add(alignmentSubscription);
+        }
+    }
+
+    protected override void OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs e)
+    {
+        base.OnDetachedFromVisualTree(e);
+        foreach (var subscription in _formSubscriptions)
+        {
+            subscription.Dispose();
+        }
    }
 }
--- a/src/Ursa/Controls/Form/FormPanel.cs
+++ b/src/Ursa/Controls/Form/FormPanel.cs
@@ -1,6 +0,0 @@
-namespace Ursa.Controls;
-
-public class FormPanel
-{
-    
-}