Allow to set and change values of value nodes.

code/studio/src/plugins/gui_editor/expression_editor.cpp

@@ -101,6 +101,12 @@ void ExpressionEditor::contextMenuEvent( QContextMenuEvent *e )
 					a = menu.addAction( "Change slot count" );
 					connect( a, SIGNAL( triggered() ), this, SLOT( onChangeSlotCount() ) );
 				}
+
+				if( node->isValue() )
+				{
+					a = menu.addAction( "Change value" );
+					connect( a, SIGNAL( triggered() ), this, SLOT( onChangeValue() ) );
+				}
 			}
 		}
 		else
@@ -219,6 +225,11 @@ void ExpressionEditor::onItemDblClicked( QTreeWidgetItem *item )
 	node->setFlags( QGraphicsItem::ItemIsSelectable | QGraphicsItem::ItemIsMovable );
 	node->setSlotNames( info->slotNames );
 	node->setVariable( info->variable );
+	node->setIsValue( info->value );
+	if( node->isValue() )
+	{
+		node->setValue( "Value" );
+	}
 	m_scene->addItem( node );
 }
 
@@ -241,6 +252,28 @@ void ExpressionEditor::onChangeSlotCount()
 	node->changeSlotCount( c );
 }
 
+void ExpressionEditor::onChangeValue()
+{
+	QList< QGraphicsItem* > l = m_scene->selectedItems();
+	ExpressionNode *node = static_cast< ExpressionNode* >( l[ 0 ] );
+
+	QString oldValue = node->getValue();
+
+	QString newValue = QInputDialog::getText( this,
+										tr( "Change value" ),
+										tr( "Enter new value" ),
+										QLineEdit::Normal,
+										oldValue );
+
+	if( newValue.isEmpty() )
+		return;
+	if( newValue == oldValue )
+		return;
+
+	node->setValue( newValue );
+	node->update();
+}
+
 void ExpressionEditor::addExpression( const ExpressionInfo *info )
 {
 	QTreeWidgetItem *item = findTopLevelItem( info->category );

code/studio/src/plugins/gui_editor/expression_editor.h

@@ -46,6 +46,7 @@ private Q_SLOTS:
 	void onUnLinkItems();
 	void onItemDblClicked( QTreeWidgetItem *item );
 	void onChangeSlotCount();
+	void onChangeValue();
 
 private:
 	void addExpression( const ExpressionInfo *info );

code/studio/src/plugins/gui_editor/expression_info.h

@@ -25,9 +25,16 @@
 struct ExpressionInfo
 {
 	QString name;
+	bool value;
 	QString category;
 	bool variable;
 	QStringList slotNames;
+
+	ExpressionInfo()
+	{
+		value = false;
+		variable = false;
+	}
 };
 
 #endif

code/studio/src/plugins/gui_editor/expression_loader.cpp

@@ -37,6 +37,20 @@ public:
 		return true;
 	}
 
+	bool parseValue()
+	{
+		QString text = reader.readElementText( QXmlStreamReader::ErrorOnUnexpectedElement );
+		if( reader.hasError() )
+			return false;
+
+		if( text.toLower() == "true" )
+			m_info->value = true;
+		else
+			m_info->value = false;
+
+		return true;
+	}
+
 	bool parseCategory()
 	{
 		QString text = reader.readElementText( QXmlStreamReader::ErrorOnUnexpectedElement );
@@ -136,6 +150,9 @@ public:
 				if( name == "name" )
 					error = !parseName();
 				else
+				if( name == "value" )
+					error = !parseValue();
+				else
 				if( name == "category" )
 					error = !parseCategory();
 				else

code/studio/src/plugins/gui_editor/expression_node.cpp

@@ -106,6 +106,7 @@ QGraphicsItem( parent )
 	m_hh = 20.0;
 
 	m_variable = false;
+	m_isValue = false;
 
 	m_name = name;
 
@@ -152,6 +153,20 @@ void ExpressionNode::paint( QPainter *painter, const QStyleOptionGraphicsItem *o
 	painter->setPen( p );
 	painter->drawText( header, Qt::AlignCenter, m_name );
 
+	// Draw value if applicable
+	if( m_isValue )
+	{
+		QRectF vbox;
+		vbox.setTopLeft( QPoint( 0.0, 20.0 ) );
+		vbox.setWidth( header.width() );
+		vbox.setHeight( header.height() );
+		QPen vpen;
+		vpen.setColor( Qt::red );
+		painter->setPen( vpen );
+		painter->drawText( vbox, Qt::AlignCenter, m_value );
+		painter->setPen( p );
+	}
+
 	if( option->state & QStyle::State_Selected )
 	{
 		p.setStyle( Qt::DotLine );

code/studio/src/plugins/gui_editor/expression_node.h

@@ -58,6 +58,12 @@ public:
 	void setVariable( bool b ){ m_variable = b; }
 	bool variable() const{ return m_variable; }
 
+	void setValue( const QString &value ){ m_value = value; }
+	QString getValue() const{ return m_value; }
+
+	bool isValue() const{ return m_isValue; }
+	void setIsValue( bool b ){ m_isValue = b; }
+
 protected:
 	void mouseMoveEvent( QGraphicsSceneMouseEvent *e );
 
@@ -75,6 +81,9 @@ private:
 	QString m_name;
 
 	bool m_variable;
+
+	QString m_value;
+	bool m_isValue;
 };
 
 #endif