ui: Added expand and collapse node actions to graph view context menu

* expand/collapse node via graph view context menu
* also possible with Shift + Left Click

src/lib_gui/qt/view/graphElements/QtGraphNode.cpp

@@ -11,7 +11,9 @@
 #include "qt/utility/utilityQt.h"
 #include "qt/view/graphElements/nodeComponents/QtGraphNodeComponent.h"
 #include "qt/view/graphElements/QtGraphEdge.h"
+#include "qt/view/graphElements/QtGraphNodeExpandToggle.h"
 #include "utility/messaging/type/code/MessageCodeShowDefinition.h"
+#include "utility/messaging/type/MessageGraphNodeExpand.h"
 #include "utility/messaging/type/MessageGraphNodeHide.h"
 #include "utility/messaging/type/MessageGraphNodeMove.h"
 #include "utility/ResourcePaths.h"
@@ -394,6 +396,23 @@ void QtGraphNode::onHide()
 	}
 }
 
+void QtGraphNode::onCollapseExpand()
+{
+	for (auto subNode : getSubNodes())
+	{
+		if (subNode->isExpandToggleNode())
+		{
+			MessageGraphNodeExpand(getTokenId(), !dynamic_cast<QtGraphNodeExpandToggle*>(subNode)->isExpanded()).dispatch();
+			return;
+		}
+	}
+
+	if (getParent())
+	{
+		getParent()->onCollapseExpand();
+	}
+}
+
 void QtGraphNode::onShowDefinition()
 {
 	Id tokenId = getTokenId();

src/lib_gui/qt/view/graphElements/QtGraphNode.h

@@ -95,8 +95,11 @@ public:
 	virtual void addSubNode(QtGraphNode* node);
 
 	virtual void onClick();
-	virtual void onHide();
-	virtual void onShowDefinition();
+
+	void onHide();
+	void onCollapseExpand();
+	void onShowDefinition();
+
 	virtual void moved(const Vec2i& oldPosition);
 
 	virtual void updateStyle() = 0;

src/lib_gui/qt/view/graphElements/QtGraphNodeExpandToggle.cpp

@@ -89,3 +89,8 @@ void QtGraphNodeExpandToggle::updateStyle()
 
 	m_icon->setPixmap(utility::colorizePixmap(m_icon->pixmap(), style.color.icon.c_str()));
 }
+
+bool QtGraphNodeExpandToggle::isExpanded() const
+{
+	return m_expanded;
+}

src/lib_gui/qt/view/graphElements/QtGraphNodeExpandToggle.h

@@ -19,6 +19,8 @@ public:
 	virtual void onClick();
 	virtual void updateStyle();
 
+	bool isExpanded() const;
+
 protected:
 	virtual void matchName(const std::wstring& query, std::vector<QtGraphNode*>* matchedNodes) {}
 

src/lib_gui/qt/view/graphElements/nodeComponents/QtGraphNodeComponentClickable.cpp

@@ -39,6 +39,10 @@ void QtGraphNodeComponentClickable::nodeMouseReleaseEvent(QGraphicsSceneMouseEve
 		{
 			m_graphNode->onHide();
 		}
+		else if (event->modifiers() & Qt::ShiftModifier)
+		{
+			m_graphNode->onCollapseExpand();
+		}
 		else if (event->modifiers() & Qt::ControlModifier)
 		{
 			m_graphNode->onShowDefinition();