1 files changed, 42 insertions, 0 deletions
diff --git a/src/helper/auto-connection.h b/src/helper/auto-connection.h
new file mode 100644
index 0000000..368db34
--- /dev/null
+++ b/src/helper/auto-connection.h
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#ifndef SEEN_AUTO_CONNECTION_H
+#define SEEN_AUTO_CONNECTION_H
+
+#include <sigc++/connection.h>
+
+namespace Inkscape {
+
+// class to simplify re-subsribing to connections; automates disconnecting
+
+class auto_connection {
+public:
+    auto_connection(const sigc::connection& c): _connection(c) {}
+
+    auto_connection() = default;
+
+    ~auto_connection() {
+        _connection.disconnect();
+    }
+
+    auto_connection(const auto_connection&) = delete;
+    auto_connection& operator = (const auto_connection&) = delete;
+
+    // re-assign
+    auto_connection& operator = (const sigc::connection& c) {
+        _connection.disconnect();
+        _connection = c;
+        return *this;
+    }
+
+    void disconnect() {
+        *this = sigc::connection();
+    }
+
+private:
+    sigc::connection _connection;
+};
+
+} // namespace
+
+#endif