CopyToClipboard Cross-Platform Utility/Extension

Author: 0xFirekeeper

Assets/Thirdweb/Examples/Scripts/PlaygroundManager.cs

@@ -125,6 +125,7 @@ private async void ConnectWallet(WalletOptions options)
             currentPanel.Action1Button.onClick.AddListener(async () =>
             {
                 var address = await wallet.GetAddress();
+                address.CopyToClipboard();
                 Log(currentPanel.LogText, $"Address: {address}");
             });
 

Assets/Thirdweb/Runtime/Unity/ThirdwebUnityExtensions.cs

@@ -1,13 +1,44 @@
+using System;
 using System.Numerics;
 using System.Threading.Tasks;
 using UnityEngine;
 using ZXing;
 using ZXing.QrCode;
 
+#if UNITY_WEBGL
+using System.Runtime.InteropServices;
+#endif
+
 namespace Thirdweb.Unity
 {
     public static class ThirdwebUnityExtensions
     {
+#if UNITY_WEBGL
+        [DllImport("__Internal")]
+        private static extern string ThirdwebCopyBuffer(string text);
+#endif
+
+        public static void CopyToClipboard(this string text)
+        {
+            try
+            {
+                if (Application.platform == RuntimePlatform.WebGLPlayer)
+                {
+#if UNITY_WEBGL
+                    ThirdwebCopyBuffer(text);
+#endif
+                }
+                else
+                {
+                    GUIUtility.systemCopyBuffer = text;
+                }
+            }
+            catch (Exception e)
+            {
+                ThirdwebDebug.LogWarning($"Failed to copy to clipboard: {e}");
+            }
+        }
+
         public static async Task<Sprite> GetNFTSprite(this NFT nft, ThirdwebClient client)
         {
             var bytes = await nft.GetNFTImageBytes(client);

Assets/Thirdweb/Runtime/Unity/WebGL/WebGLCopyBuffer.jslib

@@ -0,0 +1,31 @@
+mergeInto(LibraryManager.library, {
+  ThirdwebCopyBuffer: function (textPtr) {
+    var text = UTF8ToString(textPtr);
+
+    if (navigator.clipboard && navigator.clipboard.writeText) {
+      navigator.clipboard
+        .writeText(text)
+        .then(function () {
+          console.log("Copied to clipboard:", text);
+        })
+        .catch(function (err) {
+          console.warn("Failed to copy text with navigator.clipboard:", err);
+          fallbackCopyText(text);
+        });
+    } else {
+      fallbackCopyText(text);
+    }
+
+    function fallbackCopyText(textToCopy) {
+      var input = document.createElement("textarea");
+      input.value = textToCopy;
+      input.style.position = "absolute";
+      input.style.left = "-9999px";
+      document.body.appendChild(input);
+      input.select();
+      document.execCommand("copy");
+      document.body.removeChild(input);
+      console.log("Copied to clipboard using fallback:", textToCopy);
+    }
+  },
+});