node: implemented bypassing

app/node/node.cpp

@@ -42,6 +42,8 @@ namespace olive {
 
 #define super QObject
 
+const QString Node::kEnabledInput = QStringLiteral("enabled_in");
+
 Node::Node() :
   can_be_deleted_(true),
   override_color_(-1),
@@ -49,9 +51,9 @@ Node::Node() :
   operation_stack_(0),
   cache_result_(false),
   flags_(kNone),
-  effect_element_(-1),
-  bypass_(false)
+  effect_element_(-1)
 {
+  AddInput(kEnabledInput, NodeValue::kBoolean, true);
 }
 
 Node::~Node()
@@ -105,6 +107,7 @@ QString Node::Description() const
 
 void Node::Retranslate()
 {
+  SetInputName(kEnabledInput, tr("Enabled"));
 }
 
 QIcon Node::icon() const