From 7dd9579f2b8e3eabdad63c8cce46d5c7ff2e42fd Mon Sep 17 00:00:00 2001
From: =?utf8?q?Hannu=20Niemist=C3=B6?= <hannu.niemisto@semantum.fi>
Date: Sun, 29 Oct 2017 01:11:15 +0300
Subject: [PATCH] Means to handle connection selections without configuration
 component

refs #7583

Change-Id: I7e8f77aaf54156bdb187f3220d0191db0a77f7e8
---
 .../DiagramViewerSelectionProvider.java       | 28 +++++++++++++++++++
 .../AbstractVariableTabContribution.java      |  2 +-
 .../ui/selection/ParentVariable.java          | 14 ++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 bundles/org.simantics.ui/src/org/simantics/ui/selection/ParentVariable.java

diff --git a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewerSelectionProvider.java b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewerSelectionProvider.java
index 4ef86b753..154d8d4c7 100644
--- a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewerSelectionProvider.java
+++ b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewerSelectionProvider.java
@@ -31,6 +31,7 @@ import org.simantics.modeling.ModelingResources;
 import org.simantics.ui.SimanticsUI;
 import org.simantics.ui.selection.AnyResource;
 import org.simantics.ui.selection.AnyVariable;
+import org.simantics.ui.selection.ParentVariable;
 import org.simantics.ui.selection.WorkbenchSelectionContentType;
 import org.simantics.utils.DataContainer;
 import org.simantics.utils.threads.IThreadWorkQueue;
@@ -109,7 +110,34 @@ public class DiagramViewerSelectionProvider extends WorkbenchSelectionProvider {
                 } catch (DatabaseException e) {
                     Logger.defaultLogError(e);
                 }
+            }
+            else if(contentType instanceof ParentVariable) {
+                ParentVariable type = (ParentVariable)contentType;
+                try {
+                    return (T) type.processor.sync(new ResourceRead2<Variable>(runtime, element) {
+                        @Override
+                        public Variable perform(ReadGraph graph) throws DatabaseException {
+
+                            DiagramResource DIA = DiagramResource.getInstance(graph);
+                            ModelingResources MOD = ModelingResources.getInstance(graph);
+                            Layer0 L0 = Layer0.getInstance(graph);
+
+                            String uri = graph.getPossibleRelatedValue(resource, DIA.RuntimeDiagram_HasVariable);
+                            if (uri == null)
+                                return null;
+
+                            Variable var = Variables.getPossibleVariable(graph, uri);
+                            if (var == null)
+                                return null;
+
+                            return var;
+                        }
+                    });
+                } catch (DatabaseException e) {
+                    Logger.defaultLogError(e);
+                }
             } 
+
             return null;
         }
 
diff --git a/bundles/org.simantics.selectionview/src/org/simantics/selectionview/AbstractVariableTabContribution.java b/bundles/org.simantics.selectionview/src/org/simantics/selectionview/AbstractVariableTabContribution.java
index 8063eb3c1..76f49af30 100644
--- a/bundles/org.simantics.selectionview/src/org/simantics/selectionview/AbstractVariableTabContribution.java
+++ b/bundles/org.simantics.selectionview/src/org/simantics/selectionview/AbstractVariableTabContribution.java
@@ -69,7 +69,7 @@ abstract public class AbstractVariableTabContribution implements TabContribution
 	} 
 	
 	@Override
-	final public void contribute(ReadGraph graph, final Object selection, Collection<ComparableTabContributor> result) throws DatabaseException {
+	public void contribute(ReadGraph graph, final Object selection, Collection<ComparableTabContributor> result) throws DatabaseException {
 		
 		Variable variable = getPossibleVariable(graph, selection);
 		if(variable == null) return;
diff --git a/bundles/org.simantics.ui/src/org/simantics/ui/selection/ParentVariable.java b/bundles/org.simantics.ui/src/org/simantics/ui/selection/ParentVariable.java
new file mode 100644
index 000000000..39c919798
--- /dev/null
+++ b/bundles/org.simantics.ui/src/org/simantics/ui/selection/ParentVariable.java
@@ -0,0 +1,14 @@
+package org.simantics.ui.selection;
+
+import org.simantics.db.RequestProcessor;
+import org.simantics.db.layer0.variable.Variable;
+
+public class ParentVariable implements WorkbenchSelectionContentType<Variable>  {
+
+	public RequestProcessor processor;
+	
+	public ParentVariable(RequestProcessor processor) {
+		this.processor = processor;
+	}
+	
+}
-- 
2.47.1