]> gerrit.simantics Code Review - simantics/platform.git/blobdiff - bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
Diagram to SVG enhancements and stabilization
[simantics/platform.git] / bundles / org.simantics.modeling / src / org / simantics / modeling / SCLScenegraph.java
index 33d7f06290e109e69fdc4ceff7afb00c8b7cd00a..bfab7fc6c0f7f8472a4c4158f547a0cf6acce68e 100644 (file)
@@ -1,15 +1,44 @@
 package org.simantics.modeling;
 
+import java.awt.BasicStroke;
+import java.awt.Dimension;
+import java.awt.RenderingHints;
+import java.awt.RenderingHints.Key;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Rectangle2D;
+import java.io.ByteArrayOutputStream;
+import java.io.OutputStreamWriter;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
+import java.util.Random;
 import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
 
+import javax.xml.transform.OutputKeys;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+
+import org.apache.batik.dom.GenericDOMImplementation;
+import org.apache.batik.svggen.SVGGeneratorContext;
+import org.apache.batik.svggen.SVGGraphics2D;
+import org.simantics.Simantics;
+import org.simantics.db.ReadGraph;
 import org.simantics.db.Resource;
+import org.simantics.db.common.request.UnaryRead;
 import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.exception.RuntimeDatabaseException;
 import org.simantics.diagram.elements.DiagramNodeUtil;
 import org.simantics.diagram.elements.TextGridNode;
 import org.simantics.diagram.elements.TextNode;
+import org.simantics.diagram.stubs.DiagramResource;
 import org.simantics.g2d.canvas.ICanvasContext;
 import org.simantics.g2d.diagram.DiagramHints;
 import org.simantics.g2d.diagram.IDiagram;
@@ -18,9 +47,14 @@ import org.simantics.g2d.diagram.participant.Selection;
 import org.simantics.g2d.element.IElement;
 import org.simantics.g2d.scenegraph.ICanvasSceneGraphProvider;
 import org.simantics.g2d.utils.CanvasUtils;
+import org.simantics.layer0.Layer0;
+import org.simantics.scenegraph.INode;
 import org.simantics.scenegraph.ParentNode;
 import org.simantics.scenegraph.g2d.G2DParentNode;
+import org.simantics.scenegraph.g2d.G2DRenderingHints;
 import org.simantics.scenegraph.g2d.G2DSceneGraph;
+import org.simantics.scenegraph.g2d.IG2DNode;
+import org.simantics.scenegraph.g2d.IG2DNodeVisitor;
 import org.simantics.scenegraph.g2d.events.command.Commands;
 import org.simantics.scenegraph.g2d.nodes.BackgroundNode;
 import org.simantics.scenegraph.g2d.nodes.BoundsNode;
@@ -28,13 +62,26 @@ import org.simantics.scenegraph.g2d.nodes.ConnectionNode;
 import org.simantics.scenegraph.g2d.nodes.DataNode;
 import org.simantics.scenegraph.g2d.nodes.DecorationSVGNode;
 import org.simantics.scenegraph.g2d.nodes.NavigationNode;
+import org.simantics.scenegraph.g2d.nodes.SVGNode;
+import org.simantics.scenegraph.g2d.nodes.SelectionNode;
 import org.simantics.scenegraph.g2d.nodes.SingleElementNode;
+import org.simantics.scenegraph.g2d.nodes.connection.RouteGraphNode;
+import org.simantics.scenegraph.g2d.nodes.spatial.RTreeNode;
 import org.simantics.scenegraph.utils.NodeUtil;
+import org.simantics.scl.runtime.function.Function1;
 import org.simantics.trend.impl.ItemNode;
 import org.simantics.utils.threads.ThreadUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.DOMImplementation;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
 
 public class SCLScenegraph {
-       
+
+       private static final Logger LOGGER = LoggerFactory.getLogger(SCLScenegraph.class);
+
        public static ICanvasSceneGraphProvider getICanvasSceneGraphProvider(Resource model, Resource diagram, String diagramRVI) throws DatabaseException, InterruptedException {
                ICanvasSceneGraphProvider provider = DiagramNodeUtil.loadSceneGraphProvider(model, diagram, diagramRVI);
                return provider;
@@ -44,13 +91,6 @@ public class SCLScenegraph {
                provider.dispose();
        }
        
-       //public static Resource getDiagramRuntime(Resource ) 
-       
-       
-//     public static String getNodeTransform(ICanvasContext ctx, String name) throws DatabaseException, InterruptedException {
-//             return getNodeTransform(ctx, name);
-//     }
-       
        public static String getNodeTransform(ICanvasContext ctx, String name) {
                
                Set<TextNode> texts = NodeUtil.collectNodes(ctx.getSceneGraph(), TextNode.class);
@@ -234,7 +274,7 @@ public class SCLScenegraph {
         }
     }
     
-     public static boolean copyPaste (final ICanvasContext source_ctx, final ICanvasContext target_ctx, List<Resource> modules) throws DatabaseException {
+    public static boolean copyPaste (final ICanvasContext source_ctx, final ICanvasContext target_ctx, List<Resource> modules) throws DatabaseException {
        
        IDiagram idiagram = source_ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
 
@@ -286,5 +326,497 @@ public class SCLScenegraph {
                return true;
     }
 
+       static class Generator extends SVGGraphics2D {
+
+               int elemLevel = 0;
+               String newElementId = null;
+               ArrayList<Element> elements = new ArrayList<Element>();
+
+               public static final String svgNS = "http://www.w3.org/2000/svg";
+
+               public Generator(SVGGeneratorContext ctx, boolean joku) {
+                       super(ctx, joku);
+               }
+
+               public Generator(Document document) {
+                       super(document);
+               }
+
+               @Override
+               public Element getRoot() {
+                       Element root = super.getRoot();
+                       for(Element e : elements) {
+                               root.appendChild(e);
+                       }
+                       return root;
+               }
+
+               @Override
+               public void setRenderingHint(Key arg0, Object arg1) {
+                       if(G2DRenderingHints.KEY_BEGIN_ELEMENT == arg0) {
+                               elemLevel++;
+                       }
+                       if(G2DRenderingHints.KEY_ELEMENT_ID == arg0) {
+                               if(arg1 != null)
+                                       newElementId = arg1.toString();
+                               else
+                                       newElementId = UUID.randomUUID().toString();
+                       }
+                       if(G2DRenderingHints.KEY_END_ELEMENT == arg0) {
+                               elemLevel--;
+                               if(elemLevel == 0) {
+                                       Element group = getDOMFactory().createElement(SVG_G_TAG);
+                                       //Element group = getDOMFactory().createElementNS(SVG_NAMESPACE_URI, SVG_G_TAG);
+                                       group.setAttributeNS(null, "id", newElementId);
+                                       group.setAttributeNS(null, "class", arg1.toString());
+                                       getRoot(group);
+                                       elements.add(group);
+                               }
+                       }
+                       super.setRenderingHint(arg0, arg1);
+               }
+
+       }
+
+       public static Element renderSVGNode(IG2DNode node) {
+
+               // Get a DOMImplementation.
+               DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
+
+               // Create an instance of org.w3c.dom.Document.
+               String svgNS = "http://www.w3.org/2000/svg";
+               Document document = domImpl.createDocument(svgNS, "svg", null);
+
+               SVGGeneratorContext ctx = SVGGeneratorContext.createDefault(document);
+               ctx.setComment(null);
+
+               // Create an instance of the SVG Generator.
+               SVGGraphics2D svgGenerator = new Generator(ctx, false);
+
+               try {
+
+                       svgGenerator.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+                       svgGenerator.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
+                       svgGenerator.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+
+                       node.render(svgGenerator);
+
+               } catch (Throwable t) {
+                       LOGGER.error("Problems rendering scene graph to SVG", t);
+               }
+
+               return svgGenerator.getRoot();
+       }
+
+       public static String printSVGDocument(Element doce) {
+
+               StringBuilder result = new StringBuilder();
+
+               NodeList nl =  doce.getChildNodes();
+
+               for(int i=0;i<nl.getLength();i++) {
+
+                       ByteArrayOutputStream os = new ByteArrayOutputStream();
+
+                       try {
+
+                               TransformerFactory tf = TransformerFactory.newInstance();
+                               Transformer transformer = tf.newTransformer();
+                               transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
+                               transformer.setOutputProperty(OutputKeys.STANDALONE, "no");
+                               transformer.setOutputProperty(OutputKeys.METHOD, "xml");
+                               transformer.setOutputProperty(OutputKeys.INDENT, "yes");
+                               transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
+                               transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
+
+                               transformer.transform(new DOMSource(nl.item(i)), 
+                                               new StreamResult(new OutputStreamWriter(os, "UTF-8")));
+
+                               os.flush();
+                               os.close();
+
+                       } catch (Throwable t) {
+                               LOGGER.error("Problems formatting SVGDocument to text.", t);
+                       }
+
+                       result.append(new String(os.toByteArray()));
+
+               }
+
+               return result.toString();
+
+       }
+
+       public static String renderSVG3(ICanvasContext ctx) {
+        return renderSVG0(ctx, p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2)));
+       }
+
+    /**
+     * @param graph
+     * @param component
+     * @throws DatabaseException
+     */
+    private static Object[] createURIBasedL0Identifier(ReadGraph graph, Resource component) throws DatabaseException {
+        String uri = graph.getPossibleURI(component);
+        int hashCode = uri.hashCode();
+        Random random = new Random(hashCode);
+        long l1 = random.nextLong();
+        long l2 = random.nextLong();
+        return new Object[] { l1, l2 };
+    }
+
+    /**
+     * Default no-op mapper
+     */
+    private static final Function1<Set<?>, Map<?, ?>> mapper = p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2));
+    
+    public static String renderSVG(ICanvasContext ctx) {
+        return renderSVG0(ctx, mapper);
+    }
+
+    /**
+     * Renders ICanvasContext into SVG by mapping the SVG id's into URI based
+     * GUID's
+     * 
+     * @param ctx
+     * @return
+     */
+    public static String renderSVGMapIdentifiers(ICanvasContext ctx) {
+        return renderSVG0(ctx, new Function1<Set<?>, Map<?, ?>>() {
+
+            @Override
+            public Map<?, ?> apply(Set<?> p0) {
+                try {
+                    return Simantics.getSession().syncRequest(new UnaryRead<Set<?>, Map<?, ?>>(p0) {
+
+                        @Override
+                        public Map<?, ?> perform(ReadGraph graph) throws DatabaseException {
+                            ModelingResources MOD = ModelingResources.getInstance(graph);
+                            DiagramResource DIA = DiagramResource.getInstance(graph);
+                            Layer0 L0 = Layer0.getInstance(graph);
+                            return parameter.stream().collect(Collectors.toMap(p -> p, p -> {
+                                try {
+                                    if (p instanceof Resource) {
+                                        Resource element = (Resource) p;
+                                        if (graph.isInstanceOf(element, DIA.Connection) || graph.isInstanceOf(element, DIA.Terminal)) {
+                                            // Ok, lets create a hashcode for connections and terminals as they do not have identifiers 
+                                            return graph.getURI(element).hashCode();
+                                        } else if (graph.isInstanceOf(element, DIA.Element)) {
+                                            Resource component = graph.getPossibleObject(element, MOD.ElementToComponent);
+                                            if (component != null) {
+                                                Object relatedValue = graph.getPossibleRelatedValue(component, L0.identifier);
+                                                if (relatedValue != null) {
+                                                    if (relatedValue instanceof Object[]) {
+                                                        // OK, found guid, lets generate new based on URI
+                                                        return Arrays.toString(createURIBasedL0Identifier(graph, component));
+                                                    } else {
+                                                        System.err.println("Component " + component + " identifeir is not normal: " + relatedValue);
+                                                    }
+                                                } else {
+                                                    System.err.println("Compoennt " + component + " dooes not have identifier");
+                                                }
+                                            } else {
+                                                System.err.println("Element " + element + " does not have component");
+                                            }
+                                        }
+                                    } else {
+                                        System.err.println("p is not resource but is " + p);
+                                    }
+                                    return p;
+                                } catch (DatabaseException e) {
+                                    throw new RuntimeDatabaseException(e);
+                                }
+                            }));
+                        }
+                    });
+                } catch (DatabaseException e) {
+                    LOGGER.error("Could not apply mappings", e);
+                    throw new RuntimeDatabaseException(e);
+                }
+            }
+        });
+       }
+       
+       private static String renderSVG0(ICanvasContext ctx, Function1<Set<?>, Map<?, ?>> mappingFunction) {
 
+               // Get a DOMImplementation.
+               DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
+
+               // Create an instance of org.w3c.dom.Document.
+               String svgNS = "http://www.w3.org/2000/svg";
+               Document document = domImpl.createDocument(svgNS, "svg", null);
+
+               // Create an instance of the SVG Generator.
+               SVGGraphics2D svgGenerator = new Generator(document);
+
+               StringBuilder result = new StringBuilder();
+
+               try {
+
+            Selection selection = ctx.getAtMostOneItemOfClass(Selection.class);
+            if (selection != null) {
+                // This prevents workbench selection from being left over.
+                // Also prevents scene graph crap from being left on the screen.
+               IDiagram d = ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
+                selection.setSelection(0, d.getElements());
+            }
+
+                       G2DSceneGraph sg = ctx.getSceneGraph();
+                       G2DParentNode root = (G2DParentNode) sg.getRootNode();
+
+                       // rtree is the actual content of the diagram
+                       RTreeNode rtree = NodeUtil.getNearestChildByClass(root, RTreeNode.class);
+                       Rectangle2D rtreeBounds = NodeUtil.getLocalBounds(rtree);
+
+                       // nav is a node that has zooming functionalities
+                       NavigationNode nav = NodeUtil.getNearestChildByClass(root, NavigationNode.class);
+                       nav.setZoomEnabled(true);
+
+                       // fit view with the contents of rtreeBounds
+                       nav.zoomTo(rtreeBounds);
+
+                       // get the bounds of the content
+                       Rectangle2D content = NodeUtil.getLocalBounds(nav);
+
+                       svgGenerator.scale(3,3);
+
+                       // translate svgGenerator to the x and y coordinates of current content
+                       svgGenerator.translate(-1 * content.getX(), (-1 * content.getY()));
+
+                       Rectangle2D destination = new Rectangle2D.Double(0,0,1000,1000);
+                       double sx = destination.getWidth() / content.getWidth();
+                       double sy = destination.getHeight() / content.getHeight();
+                       double scale = sx < sy ? sx : sy;
+
+                       // Set svgCanvasSize to the given size parameters
+                       svgGenerator.setSVGCanvasSize(new Dimension((int)(scale * content.getWidth()), (int)(scale * content.getHeight())));
+                       svgGenerator.setClip(content);
+
+                       double trX = -1 * content.getX();
+                       double trY = -1 * content.getY();
+
+                       result.append("<svg width=\"100%\" height=\"100%\" stroke=\"black\"><g transform=\"translate(").append(trX).append(' ').append(trY).append(")\">");
+
+                       KeyVisitor keyVisitor = new KeyVisitor();
+                       sg.accept(keyVisitor);
+                       
+                       Set<Object> keys = keyVisitor.getKeys();
+                       
+                       Map<?, ?> mappings = mappingFunction.apply(keys);
+
+                       IG2DNodeVisitor visitor = new PrintingVisitor(result, mappings);
+                       sg.accept(visitor);
+
+               } catch (Throwable t) {
+                       LOGGER.error("Problems rendering canvas context to SVG", t);
+               }
+
+               result.append("</g></svg>");
+               //System.err.println(" == FINAL RESULT == ");
+               //System.err.println(b);
+               return result.toString();
+       }
+       
+       
+       
+       private static class KeyVisitor implements IG2DNodeVisitor {
+
+        private Set<Object> keys = new HashSet<>();
+
+        @Override
+        public void enter(IG2DNode node) {
+            if (node instanceof SingleElementNode) {
+                Object key = ((SingleElementNode) node).getKey();
+                if (key != null) {
+                    keys.add(key);
+                }
+            }
+        }
+
+        @Override
+        public void leave(IG2DNode node) {
+            // Nothing to do
+        }
+
+        public Set<Object> getKeys() {
+            return keys;
+        }
+       }
+
+       private static class PrintingVisitor implements IG2DNodeVisitor {
+
+        int indent = 0;
+
+        HashMap<SingleElementNode,StringBuilder> senBuilders = new HashMap<>();
+
+        private StringBuilder result;
+
+        private Map<?, ?> mappings;
+
+        public PrintingVisitor(StringBuilder result, Map<?, ?> mappings) {
+            this.result = result;
+            this.mappings = mappings;
+        }
+
+        private String getKey(SingleElementNode node) {
+            String key;
+            if (mappings.containsKey(node.getKey()))
+                key = mappings.get(node.getKey()).toString();
+            else
+                key = node.getKey().toString();
+            return key;
+        }
+
+        @Override
+        public void enter(IG2DNode node) {
+            
+            StringBuilder parentBuilder = getParentBuilder(node);
+            
+            indent++;
+            if(node instanceof ConnectionNode) {
+                
+                for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
+                    n.setIgnoreSelection(true);
+                }
+
+                String key = getKey((ConnectionNode) node);
+                parentBuilder.append("\n<g class=\"connection\" id=\"" + key + "\">");
+                Element doc = renderSVGNode((IG2DNode)node);
+                String svg = printSVGDocument(doc);
+                parentBuilder.append(svg);
+
+                for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
+                    n.setIgnoreSelection(false);
+                }
+
+                parentBuilder.append("\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
+                doc = renderSVGNode((IG2DNode)node);
+                svg = printSVGDocument(doc);
+                parentBuilder.append(svg);
+                parentBuilder.append("\n</g>");
+
+                BasicStroke bs = new BasicStroke(5f);
+                
+                for(RouteGraphNode n : NodeUtil.collectNodes(node, RouteGraphNode.class)) {
+                    n.setDynamicStroke(bs);
+                }
+
+                parentBuilder.append("\n<g class=\"selectionMask\" opacity=\"0.001\" id=\"" + key + "\">");
+                doc = renderSVGNode((IG2DNode)node);
+                svg = printSVGDocument(doc);
+                parentBuilder.append(svg);
+                parentBuilder.append("\n</g>");
+
+                parentBuilder.append("\n</g>");
+                
+            } else if (node instanceof SelectionNode) {
+                
+                SelectionNode n = (SelectionNode)node;
+                SingleElementNode parentSEN = (SingleElementNode)NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
+                if(parentSEN != null && parentSEN.getKey() != null) {
+                    
+                    StringBuilder parentBuilder2 = getParentBuilder(parentSEN);
+                    
+                    String key = getKey(parentSEN);
+                    Element doc = renderSVGNode((IG2DNode)node);
+                    String svg = printSVGDocument(doc);
+                    parentBuilder2.append("\n<g style=\"visibility:hidden\" class=\"selection\" id=\"" + key + "\">");
+                    parentBuilder2.append(svg);
+                    parentBuilder2.append("\n</g>");
+                    parentBuilder2.append("\n<g class=\"selectionMask\" id=\"" + key + "\">");
+                    Rectangle2D rect = n.getRect();
+                    parentBuilder2.append("<rect style=\"fill:#fff\" opacity=\"0.001\"");
+                    parentBuilder2.append(" x=\"" + rect.getX() + "\" y=\"" + rect.getY() + "\"");
+                    parentBuilder2.append(" width=\"" + rect.getWidth() + "\" height=\"" + rect.getHeight() + "\"");
+                    parentBuilder2.append("></rect>");
+                    parentBuilder2.append("\n</g>");
+                }
+            } else if (node instanceof SVGNode) {
+                SVGNode svg = (SVGNode)node;
+                parentBuilder.append(svg.getSVGText());
+            } else if (node instanceof G2DParentNode) {
+                AffineTransform at = node.getTransform();
+                if(node instanceof SingleElementNode) {
+                    SingleElementNode sen = (SingleElementNode)node;
+                    if(sen.getKey() != null) {
+                        String key = getKey(sen);
+                        parentBuilder.append("\n<g class=\"definedElement\" id=\"" + key + "\">");
+                    }
+                    senBuilders.put(sen, new StringBuilder());
+                }
+                if(!at.isIdentity()) {
+                    if(at.getScaleX() == 1.0 && at.getScaleY() == 1.0 && at.getShearX() == 0.0 && at.getShearY() == 0.0) {
+                        String m = "translate(" + at.getTranslateX() + " " + at.getTranslateY() + ")";
+                        parentBuilder.append("\n<g transform=\"" + m + "\">");
+                    } else {
+                        double[] ds = new double[6];
+                        at.getMatrix(ds);
+                        String m = "matrix(" + ds[0] + " " + ds[1] + " " + ds[2] + " " + ds[3] + " " + ds[4] + " " + ds[5] + ")";
+                        parentBuilder.append("\n<g transform=\"" + m + "\">");
+                    }
+                }
+            }
+
+            //enters.put(node, b.length());
+
+        }
+        
+        private StringBuilder getParentBuilder(IG2DNode node) {
+            
+            INode parentSEN = NodeUtil.getNearestParentOfType(node, SingleElementNode.class);
+            if(parentSEN instanceof G2DSceneGraph) return result;
+
+            StringBuilder parentBuilder = senBuilders.get(parentSEN);
+            if(parentBuilder == null) return result;
+            
+            return parentBuilder;
+            
+        }
+
+        @Override
+        public void leave(IG2DNode node) {
+
+            if(node instanceof ConnectionNode || node instanceof SVGNode) {
+                // We are done
+            } else if (node instanceof G2DParentNode) {
+                
+                StringBuilder parentBuilder = getParentBuilder(node);
+                
+                if(node instanceof SingleElementNode) {
+                    SingleElementNode sen = (SingleElementNode)node;
+//                  if(sen.getKey() != null) {
+                        StringBuilder b = senBuilders.get(sen);
+                        String content = b.toString();
+                        if(content.isEmpty()) {
+                            if(sen.getKey() != null) {
+                                
+                                for(SelectionNode n : NodeUtil.collectNodes(node, SelectionNode.class)) {
+                                    n.setIgnore(true);
+                                }
+
+                                Element doc = renderSVGNode((IG2DNode)node);
+                                String svg = printSVGDocument(doc);
+                                parentBuilder.append(svg);
+                            }
+                        } else {
+                            parentBuilder.append(content);
+                        }
+//                  }
+                }
+
+                
+                AffineTransform at = node.getTransform();
+                if(!at.isIdentity()) {
+                    parentBuilder.append("</g>");
+                }
+                if(node instanceof SingleElementNode) {
+                    SingleElementNode sen = (SingleElementNode)node;
+                    if(sen.getKey() != null) {
+                        parentBuilder.append("</g>");
+                    }
+                }
+            }
+            indent --;
+        }
+       }
 }
\ No newline at end of file