1 files changed, 15 insertions, 6 deletions
diff --git a/sigscript/Config.cpp b/sigscript/Config.cpp
index 9daff0a8..d776956d 100644
--- a/sigscript/Config.cpp
+++ b/sigscript/Config.cpp
@@ -32,18 +32,24 @@ Config::Config(Config* parent) :
 
 bool Config::addValue(const QString& name, const QVariant& value, const Options options)
 {
-    if (!m_values.contains(name))
-    {
-        emit(valueAdded(name, value));
-        setValue(name, value, options);
-    }
+    if (!m_values.contains(name) || (m_values[name].second & Deleted))
+        return setValue(name, value, options);
+    return false;
 }
 
 bool Config::setValue(const QString& name, const QVariant& value, const Options options)
 {
     QWriteLocker locker(&m_lock);
+    if (m_values.contains(name) && (m_values[name].second & ReadOnly))
+        return false;
+    if (!m_values.contains(name) || (m_values[name].second & Deleted))
+    {
+        m_values[name].second &= ~Deleted;
+        emit(valueAdded(name, value));
+    }
     m_values[name] = Value(value, options);
     emit(valueChanged(name, value));
+    return true;
 }
 
 bool Config::removeValue(const QString& name, const bool shadow)
@@ -51,9 +57,12 @@ bool Config::removeValue(const QString& name, const bool shadow)
     QWriteLocker locker(&m_lock);
     if (shadow)
         m_values[name].second |= Deleted;
-    else
+    else if (m_values.contains(name))
         m_values.remove(name);
+    else
+        return false;
     emit(valueRemoved(name));
+    return true;
 }
 
 QVariant Config::value(const QString& name, const bool recursive) const