improved clipboard handler

main.cpp

@@ -1,4 +1,6 @@
 #include <QApplication>
+#include <QClipboard>
+#include <QGuiApplication>
 #include <QButtonGroup>
 #include <QFont>
 #include <QGridLayout>
@@ -25,6 +27,48 @@
 #include "VersionsPanel.h"
 #include "WebSocketController.h"
 
+#ifdef __EMSCRIPTEN__
+#include <emscripten.h>
+#endif
+
+// ---------------------------------------------------------------------------
+// Copy text to the OS clipboard.
+// Uses navigator.clipboard (modern, async) with execCommand fallback (HTTP).
+// Falls back to Qt clipboard on non-WASM builds.
+// ---------------------------------------------------------------------------
+static void copyToClipboard(const QString &text)
+{
+#ifdef __EMSCRIPTEN__
+    QByteArray utf8 = text.toUtf8();
+    EM_ASM({
+        var txt = UTF8ToString($0, $1);
+        if (navigator.clipboard && navigator.clipboard.writeText) {
+            navigator.clipboard.writeText(txt).catch(function() {
+                var ta = document.createElement('textarea');
+                ta.value = txt;
+                ta.style.position = 'fixed';
+                ta.style.opacity  = '0';
+                document.body.appendChild(ta);
+                ta.focus(); ta.select();
+                document.execCommand('copy');
+                document.body.removeChild(ta);
+            });
+        } else {
+            var ta = document.createElement('textarea');
+            ta.value = txt;
+            ta.style.position = 'fixed';
+            ta.style.opacity  = '0';
+            document.body.appendChild(ta);
+            ta.focus(); ta.select();
+            document.execCommand('copy');
+            document.body.removeChild(ta);
+        }
+    }, utf8.constData(), utf8.size());
+#else
+    QGuiApplication::clipboard()->setText(text);
+#endif
+}
+
 static QWidget *makeGamesTab(WebSocketController *ctrl, QWidget *parent)
 {
     auto *panel = new GamesPanel(parent);
@@ -270,17 +314,27 @@ static QWidget *makeManualTab(WebSocketController *ctrl, QWidget *parent)
     }
     layout->addLayout(inputGrid);
 
-    // Log view + clear button
+    // Log view + action buttons
-    auto *clearBtn = new QPushButton("Clear Log", page);
-    clearBtn->setMaximumWidth(100);
     auto *log = new QTextEdit(page);
     log->setReadOnly(true);
     log->setFont(QFont("Courier", 9));
+
+    auto *logBtnRow  = new QHBoxLayout();
+    auto *copyLogBtn = new QPushButton("Copy Log", page);
+    auto *clearBtn   = new QPushButton("Clear Log", page);
+    copyLogBtn->setMaximumWidth(110);
+    clearBtn->setMaximumWidth(100);
+    logBtnRow->addWidget(copyLogBtn);
+    logBtnRow->addWidget(clearBtn);
+    logBtnRow->addStretch(1);
+
     layout->addWidget(log, 1);
-    layout->addWidget(clearBtn);
+    layout->addLayout(logBtnRow);
     ctrl->addLogView(log);
 
-    QObject::connect(clearBtn, &QPushButton::clicked, log, &QTextEdit::clear);
+    QObject::connect(clearBtn,   &QPushButton::clicked, log,  &QTextEdit::clear);
+    QObject::connect(copyLogBtn, &QPushButton::clicked, page,
+                     [log]() { copyToClipboard(log->toPlainText()); });
     return page;
 }