Clicking a users name copies it to the users clipboard and also displays an alert to the user that this has happened.

Plugins/Mineplex.ChatSnapManager/web/main.js

@@ -6,14 +6,51 @@ for (var i = 0; i < elements.length; i++)
 {
     var element = elements.item(i);
 
-    // TODO: This is temporary, hopefully we'll have a better solution, some sort of hover tooltip
     element.addEventListener("click", (function(element)
     {
         return function(e)
         {
             var uuid = element.getAttribute("data-player-uuid");
-            alert("UUID: " + uuid);
+            copy(uuid);
+            alertElement('<b>Copied UUID to clipboard.</b>', element, 1500);
         }
     })(element));
 
+}
+
+/**
+ * Attempts to copy the supplied text into the users clipboard.
+ * If this fails they are presented with a box allowing them to copy and paste the text.
+ * This will only work on a supported browser and if this action is caused by some sort of player input.
+ *
+ * @param text the text to put in the users clipboard
+ */
+function copy(text)
+{
+    var copyElement = document.createElement('input');
+    copyElement.setAttribute('type', 'text');
+    copyElement.setAttribute('value', text);
+    copyElement = document.body.appendChild(copyElement);
+    copyElement.select();
+
+    try
+    {
+        document.execCommand('copy');
+    }
+    catch (e)
+    {
+        console.log("document.execCommand('copy'); is not supported by this browser.");
+        prompt('Copy the value below. (CTRL + C, ENTER)', text);
+    }
+    finally
+    {
+        copyElement.remove();
+    }
+}
+
+function alertElement(html, element, millis)
+{
+    var original = element.innerHTML;
+    element.innerHTML = html;
+    setTimeout(function() { element.innerHTML = original; }, millis);
 }