Feature/batch2

ActionMenu/ActionMenuDemo.cs

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+// Examples~/ActionMenu/ActionMenuDemo.cs
+// Demonstrates: DropDownMenuControl, PillButton
+//
+// Scene setup:
+//   A scene for this example is provided. The demo grabs the UIDocument from the same
+//   GameObject via GetComponent<UIDocument>(), so no manual assignment is needed.
+//      - Three content rows each expose a "···" overflow button; tapping it opens a
+//        DropDownMenuControl anchored to the button (AnchorRight) with View / Edit /
+//        Remove options. Remove really removes the row.
+//      - The "Card actions" PillButton opens the same menu centered on itself
+//        (CenteredOnAnchor) with card-level actions.
+//      - The status line reports the chosen action, or notes when a menu is
+//        dismissed by tapping the backdrop.
+
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace UnityUIToolkit.Extensions.Examples
+{
+    /// <summary>
+    /// Demonstrates <see cref="DropDownMenuControl"/> opened from per-row overflow
+    /// buttons and from a centered card-level trigger.
+    /// </summary>
+    public class ActionMenuDemo : MonoBehaviour
+    {
+        private static readonly string[] ItemNames =
+        {
+            "Quarterly report.pdf",
+            "Team photo.png",
+            "Product roadmap.fig",
+        };
+
+        private const string IdleStatusText = "Open an item's ··· menu, or the card actions menu.";
+
+        private UIDocument uiDocument;
+        // Constructed in Start — VisualElements must not be created from a MonoBehaviour
+        // constructor or field initializer.
+        private DropDownMenuControl actionMenu;
+        private VisualElement itemList;
+        private PillButton cardActionsButton;
+        private Label statusLabel;
+
+        private void Start()
+        {
+            uiDocument = GetComponent<UIDocument>();
+            if (uiDocument == null)
+            {
+                Debug.LogError("ActionMenuDemo requires a UIDocument on the same GameObject.", this);
+                return;
+            }
+
+            actionMenu = new DropDownMenuControl();
+
+            VisualElement root = uiDocument.rootVisualElement;
+            root.Clear();
+            BuildUI(root);
+        }
+
+        private void BuildUI(VisualElement root)
+        {
+            VisualElement screen = UIToolkitExtensions.CreateVisualElement(root, "actionMenuExample__screen");
+            VisualElement card = UIToolkitExtensions.CreateVisualElement(screen, "actionMenuExample__card");
+
+            Label eyebrow = UIToolkitExtensions.CreateVisualElement<Label>(card, "actionMenuExample__eyebrow");
+            eyebrow.text = "Toolkit Sample";
+
+            Label title = UIToolkitExtensions.CreateVisualElement<Label>(card, "actionMenuExample__title");
+            title.text = "ACTION MENU";
+
+            Label description = UIToolkitExtensions.CreateVisualElement<Label>(card, "actionMenuExample__description");
+            description.text = "Each item hides its actions behind a ··· overflow menu. Choosing an option runs that option's callback; tapping the backdrop dismisses the menu without acting.";
+
+            itemList = UIToolkitExtensions.CreateVisualElement(card, "actionMenuExample__itemList");
+            foreach (string itemName in ItemNames)
+            {
+                AddItemRow(itemName);
+            }
+
+            cardActionsButton = UIToolkitExtensions.CreateVisualElement<PillButton>(card, "actionMenuExample__centeredButton");
+            cardActionsButton.Text = "Card actions";
+            cardActionsButton.SetInnerColor("#4A90E2");
+            cardActionsButton.SetOuterColor("#7B68EE");
+            cardActionsButton.SetTextColor(Color.white);
+            cardActionsButton.Clicked += OpenCardMenu;
+
+            statusLabel = UIToolkitExtensions.CreateVisualElement<Label>(card, "actionMenuExample__status");
+            statusLabel.text = IdleStatusText;
+        }
+
+        private void AddItemRow(string itemName)
+        {
+            VisualElement row = UIToolkitExtensions.CreateVisualElement(itemList, "actionMenuExample__itemRow");
+
+            Label itemLabel = UIToolkitExtensions.CreateVisualElement<Label>(row, "actionMenuExample__itemLabel");
+            itemLabel.text = itemName;
+
+            Label menuButton = UIToolkitExtensions.CreateVisualElement<Label>(row, "actionMenuExample__itemMenuButton");
+            menuButton.text = "···";
+            menuButton.RegisterCallback<ClickEvent>(evt =>
+            {
+                evt.StopPropagation();
+                OpenItemMenu(menuButton, row, itemName);
+            });
+        }
+
+        private void OpenItemMenu(VisualElement anchor, VisualElement row, string itemName)
+        {
+            actionMenu.Open(anchor, new List<DropDownMenuControl.DropDownOption>
+            {
+                new DropDownMenuControl.DropDownOption("View", () => statusLabel.text = $"Viewing '{itemName}'."),
+                new DropDownMenuControl.DropDownOption("Edit", () => statusLabel.text = $"Editing '{itemName}'."),
+                new DropDownMenuControl.DropDownOption("Remove", () => RemoveItem(row, itemName)),
+            },
+            DropDownMenuControl.Placement.AnchorRight,
+            onDismissed: () => statusLabel.text = "Menu dismissed — no action taken.");
+        }
+
+        private void OpenCardMenu()
+        {
+            actionMenu.Open(cardActionsButton, new List<DropDownMenuControl.DropDownOption>
+            {
+                new DropDownMenuControl.DropDownOption("Share card", () => statusLabel.text = "Sharing this card."),
+                new DropDownMenuControl.DropDownOption("Duplicate card", () => statusLabel.text = "Card duplicated."),
+                new DropDownMenuControl.DropDownOption("Archive card", () => statusLabel.text = "Card archived."),
+            },
+            DropDownMenuControl.Placement.CenteredOnAnchor,
+            onDismissed: () => statusLabel.text = "Menu dismissed — no action taken.");
+        }
+
+        private void RemoveItem(VisualElement row, string itemName)
+        {
+            row.RemoveFromHierarchy();
+            statusLabel.text = itemList.childCount == 0
+                ? $"Removed '{itemName}'. All items removed — restart Play Mode to reset."
+                : $"Removed '{itemName}'.";
+        }
+    }
+}