From: Marko Luukkainen <marko.luukkainen@semantum.fi>
Date: Tue, 10 Nov 2020 15:58:24 +0000 (+0200)
Subject: SCLScenegraph: Use diagram resource as a prefix for generated IDs.
X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=commitdiff_plain;h=0ba7fe0bd44607e9016a131cd94bdd24e48f5823

SCLScenegraph: Use diagram resource as a prefix for generated IDs.

gitlab #641

Change-Id: I07c0aa70f3023a34fdbacb6a1ca6e70bd37d23c0
---

diff --git a/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java b/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
index 559469d4a..c8fd242a2 100644
--- a/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
+++ b/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
@@ -31,6 +31,7 @@ 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.apache.batik.svggen.SVGIDGenerator;
 import org.simantics.Simantics;
 import org.simantics.datatypes.literal.GUID;
 import org.simantics.db.ReadGraph;
@@ -46,6 +47,7 @@ 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.diagram.ui.DiagramModelHints;
 import org.simantics.g2d.canvas.Hints;
 import org.simantics.g2d.canvas.ICanvasContext;
 import org.simantics.g2d.diagram.DiagramHints;
@@ -399,6 +401,22 @@ public class SCLScenegraph {
 		return true;
     }
 
+    
+    static class UniqueIDGenerator extends SVGIDGenerator{
+    	
+    	String overallId;
+    	public UniqueIDGenerator(String overallId) {
+    		super();
+    		this.overallId = overallId;
+    	}
+    	
+    	@Override
+    	public String generateID(String prefix) {
+    		return super.generateID(overallId+prefix);
+    	}
+
+    }
+
 	static class Generator extends SVGGraphics2D {
 
 		int elemLevel = 0;
@@ -412,9 +430,14 @@ public class SCLScenegraph {
 		}
 
 		public Generator(Document document) {
+			this(document,null);
+		}
+		public Generator(Document document, String id) {
 			super(document);
 			// prevent batik comment in each g-element
 			getGeneratorContext().setComment(null);
+			if (id != null)
+				getGeneratorContext().setIDGenerator(new UniqueIDGenerator(id));
 		}
 
 		@Override
@@ -640,6 +663,8 @@ public class SCLScenegraph {
     	
     }
     
+    
+    
 	private static String renderSVG0(double width, double height, ICanvasContext ctx, Function1<Set<?>, Map<?, ?>> mappingFunction) {
 
 		// Get a DOMImplementation.
@@ -650,7 +675,13 @@ public class SCLScenegraph {
 		Document document = domImpl.createDocument(svgNS, "svg", null);
 
 		// Create an instance of the SVG Generator.
-		SVGGraphics2D svgGenerator = new Generator(document);
+		IDiagram d = ctx.getDefaultHintContext().getHint(DiagramHints.KEY_DIAGRAM);
+		Resource r = d.getHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE);
+		SVGGraphics2D svgGenerator;
+		if (r != null)
+			svgGenerator = new Generator(document,r.toString());
+		else
+			svgGenerator = new Generator(document);
 
 		RenderSVGContext result = new RenderSVGContext();
 
@@ -661,8 +692,7 @@ public class SCLScenegraph {
             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());
+            	selection.setSelection(0, d.getElements());
             }
 
 			G2DSceneGraph sg = ctx.getSceneGraph();