Add a ControlObject::setReadOnly method.

Supports the common use-case of setting a control read-only by attaching a no-op change request handler.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/control/controlobject.cpp b/src/control/controlobject.cpp
index c82038d165..e61146242a 100644
--- a/src/control/controlobject.cpp
+++ b/src/control/controlobject.cpp
@@ -135,3 +135,12 @@ bool ControlObject::connectValueChangeRequest(const QObject* receiver,
     }
     return ret;
 }
+
+void ControlObject::setReadOnly() {
+    connectValueChangeRequest(this, SLOT(readOnlyHandler(double)),
+                              Qt::DirectConnection);
+}
+
+void ControlObject::readOnlyHandler(double v) {
+    qWarning() << m_key << "is read-only. Ignoring set of value:" << v;
+}