完成基础的 DropdownButton

samples/AtomUI.Demo.Desktop/ShowCase/DropdownButtonShowCase.axaml

@@ -11,12 +11,19 @@
         <showcase:ShowCaseItem
             Title="Basic"
             Description="The most basic dropdown menu.">
-            <atom:DropdownButton ButtonType="Link" TriggerType="Focus">
+            <atom:DropdownButton ButtonType="Link" TriggerType="Hover">
                 Hover me
                 <atom:DropdownButton.DropdownFlyout>
-                    <atom:Flyout>
-                        <TextBlock Width="200" Height="100" Padding="20">The most basic example.</TextBlock>
-                    </atom:Flyout>
+                    <atom:MenuFlyout>
+                        <atom:MenuItem Header="Cut" InputGesture="Ctrl+X" Icon="{atom:IconProvider Kind=ScissorOutlined}" />
+                        <atom:MenuItem Header="Copy" InputGesture="Ctrl+C" Icon="{atom:IconProvider Kind=CopyOutlined}" />
+                        <atom:MenuItem Header="Delete" InputGesture="Ctrl+D" Icon="{atom:IconProvider Kind=DeleteOutlined}" />
+                        <atom:MenuItem Header="Paste">
+                            <atom:MenuItem Header="Paste" InputGesture="Ctrl+P"
+                                           Icon="{atom:IconProvider Kind=FileDoneOutlined}" />
+                            <atom:MenuItem Header="Paste from History" InputGesture="Ctrl+Shift+V" />
+                        </atom:MenuItem>
+                    </atom:MenuFlyout>
                 </atom:DropdownButton.DropdownFlyout>
             </atom:DropdownButton>
         </showcase:ShowCaseItem>

samples/AtomUI.Demo.Desktop/ShowCase/InfoFlyoutShowCase.axaml

@@ -35,14 +35,6 @@
                     </atom:FlyoutHost.Flyout>
                     <atom:Button>Hover me</atom:Button>
                 </atom:FlyoutHost>
-                <atom:FlyoutHost Trigger="Focus">
-                    <atom:FlyoutHost.Flyout>
-                        <atom:Flyout>
-                            <TextBlock Width="200" Height="100" Padding="20">The most basic example.</TextBlock>
-                        </atom:Flyout>
-                    </atom:FlyoutHost.Flyout>
-                    <atom:Button>Focus me</atom:Button>
-                </atom:FlyoutHost>
                 <atom:FlyoutHost Trigger="Click">
                     <atom:FlyoutHost.Flyout>
                         <atom:Flyout>

src/AtomUI.Controls/DropdownButton/DropdownButton.cs

@@ -15,14 +15,12 @@ using Avalonia.Threading;
 
 namespace AtomUI.Controls;
 
-using FlyoutControl = Flyout;
-
 public class DropdownButton : Button
 {
    #region 公共属性定义
 
-   public static readonly StyledProperty<FlyoutControl?> DropdownFlyoutProperty =
-      AvaloniaProperty.Register<DropdownButton, FlyoutControl?>(nameof(DropdownFlyout));
+   public static readonly StyledProperty<MenuFlyout?> DropdownFlyoutProperty =
+      AvaloniaProperty.Register<DropdownButton, MenuFlyout?>(nameof(DropdownFlyout));
 
    public static readonly StyledProperty<FlyoutTriggerType> TriggerTypeProperty =
       AvaloniaProperty.Register<DropdownButton, FlyoutTriggerType>(nameof(TriggerType), FlyoutTriggerType.Click);
@@ -51,7 +49,7 @@ public class DropdownButton : Button
    public static readonly StyledProperty<int> MouseLeaveDelayProperty =
       AvaloniaProperty.Register<DropdownButton, int>(nameof(MouseLeaveDelay), 100);
 
-   public FlyoutControl? DropdownFlyout
+   public MenuFlyout? DropdownFlyout
    {
       get => GetValue(DropdownFlyoutProperty);
       set => SetValue(DropdownFlyoutProperty, value);
@@ -117,6 +115,7 @@ public class DropdownButton : Button
    private DispatcherTimer? _mouseLeaveDelayTimer;
    private CompositeDisposable? _subscriptions;
    private PathIcon? _openIndicatorIcon;
+   private IDisposable? _flyoutCloseDetectDisposable;
 
    static DropdownButton()
    {
@@ -136,7 +135,7 @@ public class DropdownButton : Button
       
       base.OnApplyTemplate(e);
       TokenResourceBinder.CreateGlobalTokenBinding(this, MarginToAnchorProperty, GlobalTokenResourceKey.MarginXXS);
-      SetupTriggerHandler();
+      SetupFlyoutProperties();
    }
 
    protected override void OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs e)
@@ -162,6 +161,26 @@ public class DropdownButton : Button
          BindUtils.RelayBind(this, IsShowArrowProperty, DropdownFlyout);
          BindUtils.RelayBind(this, IsPointAtCenterProperty, DropdownFlyout);
          BindUtils.RelayBind(this, MarginToAnchorProperty, DropdownFlyout);
+
+         DropdownFlyout.Opened += HandleFlyoutOpened;
+      }
+   }
+
+   private void HandleFlyoutOpened(object? sender, EventArgs e)
+   {
+      if (DropdownFlyout is IPopupHostProvider popupHostProvider) {
+         var host = popupHostProvider.PopupHost;
+         if (host is PopupRoot popupRoot) {
+            // 这里 PopupRoot 关闭的时候会被关闭，所以这里的事件处理器是不是不需要删除
+            popupRoot.PointerMoved += (o, args) =>
+            {
+               StopMouseLeaveTimer();
+               if (_flyoutCloseDetectDisposable is null) {
+                  var inputManager = AvaloniaLocator.Current.GetService<IInputManager>()!;
+                  _flyoutCloseDetectDisposable = inputManager.Process.Subscribe(DetectWhenToClosePopup);
+               }
+            };
+         }
       }
    }
    
@@ -175,13 +194,6 @@ public class DropdownButton : Button
                HandleAnchorTargetHover(args);
             }
          }));
-      } else if (TriggerType == FlyoutTriggerType.Focus) {
-         _subscriptions.Add(IsFocusedProperty.Changed.Subscribe(args =>
-         {
-            if (args.Sender == this) {
-               HandleAnchorTargetFocus(args);
-            }
-         }));
       } else if (TriggerType == FlyoutTriggerType.Click) {
          var inputManager = AvaloniaLocator.Current.GetService<IInputManager>()!;
          _subscriptions.Add(inputManager.Process.Subscribe(HandleAnchorTargetClick));
@@ -199,15 +211,28 @@ public class DropdownButton : Button
       }
    }
 
-   private void HandleAnchorTargetFocus(AvaloniaPropertyChangedEventArgs<bool> e)
+   private void DetectWhenToClosePopup(RawInputEventArgs args)
    {
-      if (DropdownFlyout is not null) {
-         if (e.GetNewValue<bool>()) {
-            if (!DropdownFlyout.IsOpen) {
-               ShowFlyout();
+      if (args is RawPointerEventArgs pointerEventArgs) {
+         if (DropdownFlyout is null) {
+            return;
+         }
+         if (DropdownFlyout.IsOpen) {
+            var found = false;
+            if (pointerEventArgs.Root is PopupRoot popupRoot) {
+               var current = popupRoot.Parent;
+               while (current is not null) {
+                  if (current == this) {
+                     found = true;
+                  }
+                  current = current.Parent;
+               }
+            } else if (object.Equals(pointerEventArgs.Root, this)) {
+               found = true;
+            }
+            if (!found) {
+               HideFlyout();
             }
-         } else {
-            HideFlyout();
          }
       }
    }
@@ -215,11 +240,11 @@ public class DropdownButton : Button
    private void HandleAnchorTargetClick(RawInputEventArgs args)
    {
       if (args is RawPointerEventArgs pointerEventArgs) {
-         if (pointerEventArgs.Type == RawPointerEventType.LeftButtonUp) {
-            if (DropdownFlyout is null) {
-               return;
-            }
+         if (DropdownFlyout is null) {
+            return;
+         }
 
+         if (pointerEventArgs.Type == RawPointerEventType.LeftButtonUp) {
             if (!DropdownFlyout.IsOpen) {
                var pos = this.TranslatePoint(new Point(0, 0), TopLevel.GetTopLevel(this)!);
                if (!pos.HasValue) {
@@ -246,7 +271,8 @@ public class DropdownButton : Button
       if (DropdownFlyout is null) {
          return;
       }
-
+      // 防止干扰打开
+      _flyoutCloseDetectDisposable?.Dispose();
       StopMouseEnterTimer();
       StopMouseLeaveTimer();
       DropdownFlyout.Hide();
@@ -262,7 +288,8 @@ public class DropdownButton : Button
       if (DropdownFlyout is null) {
          return;
       }
-      
+      _flyoutCloseDetectDisposable?.Dispose();
+      _flyoutCloseDetectDisposable = null;
       StopMouseEnterTimer();
       
       if (MouseLeaveDelay == 0) {

src/AtomUI.Controls/Flyouts/FlyoutHost.cs

@@ -18,8 +18,7 @@ using FlyoutControl = Flyout;
 public enum FlyoutTriggerType
 {
    Hover,
-   Click,
-   Focus
+   Click
 }
 
 public class FlyoutHost : Control
@@ -212,13 +211,6 @@ public class FlyoutHost : Control
                HandleAnchorTargetHover(args);
             }
          });
-      } else if (Trigger == FlyoutTriggerType.Focus) {
-         _subscriptions.Add(IsFocusedProperty.Changed.Subscribe(args =>
-         {
-            if (args.Sender == AnchorTarget) {
-               HandleAnchorTargetFocus(args);
-            }
-         }));
       } else if (Trigger == FlyoutTriggerType.Click) {
          var inputManager = AvaloniaLocator.Current.GetService<IInputManager>()!;
          _subscriptions.Add(inputManager.Process.Subscribe(HandleAnchorTargetClick));
@@ -236,17 +228,6 @@ public class FlyoutHost : Control
       }
    }
 
-   private void HandleAnchorTargetFocus(AvaloniaPropertyChangedEventArgs<bool> e)
-   {
-      if (Flyout is not null) {
-         if (e.GetNewValue<bool>()) {
-            ShowFlyout();
-         } else {
-            HideFlyout();
-         }
-      }
-   }
-
    private void HandleAnchorTargetClick(RawInputEventArgs args)
    {
       if (args is RawPointerEventArgs pointerEventArgs) {

src/AtomUI.Controls/Flyouts/PopupFlyoutBase.cs

@@ -526,4 +526,19 @@ public abstract class PopupFlyoutBase : FlyoutBase, IPopupHostProvider
       //Add new classes
       presenter.Classes.AddRange(classes);
    }
+
+   internal bool InPopupRootBounds(Point position)
+   {
+      if (!IsOpen) {
+         return false;
+      }
+      // TODO 后期需要加入对 Overlay 的支持
+      if (Popup?.Host is PopupRoot root) {
+         // Get the popup root bounds and convert to screen coordinates
+
+         Console.WriteLine(position);
+      }
+
+      return true;
+   }
 }