QmlDesigner: Support aliases in Connection View

 - Allows user to select aliases in connections view
 - Seeks signals for aliases

Task: QDS-2411

Change-Id: I69eb875eb99cbf8cd6a842d5f7e166d9990bb255
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

2 files changed, 14 insertions, 0 deletions

diff --git a/src/plugins/qmldesigner/designercore/include/bindingproperty.h b/src/plugins/qmldesigner/designercore/include/bindingproperty.h
index cea09aeb19..c0442a678d 100644
--- a/src/plugins/qmldesigner/designercore/include/bindingproperty.h
+++ b/src/plugins/qmldesigner/designercore/include/bindingproperty.h
@@ -56,8 +56,10 @@ public:
     static void deleteAllReferencesTo(const ModelNode &modelNode);
 
 
+    bool isAlias() const;
     bool isAliasExport() const;
 
+
 protected:
     BindingProperty(const PropertyName &propertyName, const Internal::InternalNodePointer &internalNode, Model* model, AbstractView *view);
 };
diff --git a/src/plugins/qmldesigner/designercore/model/bindingproperty.cpp b/src/plugins/qmldesigner/designercore/model/bindingproperty.cpp
index a6b332eb6e..f08c3962ae 100644
--- a/src/plugins/qmldesigner/designercore/model/bindingproperty.cpp
+++ b/src/plugins/qmldesigner/designercore/model/bindingproperty.cpp
@@ -277,6 +277,18 @@ void BindingProperty::deleteAllReferencesTo(const ModelNode &modelNode)
     }
 }
 
+bool BindingProperty::isAlias() const
+{
+    if (!isValid())
+        throw InvalidModelNodeException(__LINE__, __FUNCTION__, __FILE__);
+
+    return isDynamic()
+            && dynamicTypeName() == "alias"
+            && !expression().isNull()
+            && !expression().isEmpty()
+            && parentModelNode().view()->modelNodeForId(expression()).isValid();
+}
+
 bool BindingProperty::isAliasExport() const
 {
     if (!isValid())