On add friend clicked pastes Tox Id from clipboard if there is one

src/widget/form/addfriendform.cpp

@@ -19,6 +19,7 @@
 #include <QFont>
 #include <QMessageBox>
 #include <QErrorMessage>
+#include <QClipboard>
 #include <tox/tox.h>
 #include "ui_mainwindow.h"
 #include "src/nexus.h"
@@ -67,6 +68,7 @@ void AddFriendForm::show(Ui::MainWindow &ui)
     ui.mainHead->layout()->addWidget(head);
     main->show();
     head->show();
+    setIdFromClipboard();
 }
 
 QString AddFriendForm::getMessage() const
@@ -115,3 +117,13 @@ Ignore the proxy and connect to the Internet directly?"), QMessageBox::Yes|QMess
         this->message.clear();
     }
 }
+
+void AddFriendForm::setIdFromClipboard()
+{
+    QClipboard* clipboard = QApplication::clipboard();
+    QString id = clipboard->text().trimmed();
+    if (Core::getInstance()->isReady() && !id.isEmpty() && ToxID::isToxId(id)) {
+        if (!ToxID::fromString(id).isMine())
+            toxId.setText(id);
+    }
+}

src/widget/form/addfriendform.h

@@ -45,6 +45,7 @@ private slots:
     void onSendTriggered();
 
 private:
+    void setIdFromClipboard();
     QLabel headLabel, toxIdLabel, messageLabel;
     QPushButton sendButton;
     QLineEdit toxId;