Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.graph.impl / src / org / simantics / browsing / ui / graph / impl / MultiInputPropertyViewpointFactory.java

diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/MultiInputPropertyViewpointFactory.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/MultiInputPropertyViewpointFactory.java
new file mode 100644 (file)
index 0000000..a76b427
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/MultiInputPropertyViewpointFactory.java
@@ -0,0 +1,97 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.browsing.ui.graph.impl;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+\r
+import org.simantics.browsing.ui.BuiltinKeys;\r
+import org.simantics.browsing.ui.NodeContext;\r
+import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
+import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;\r
+import org.simantics.browsing.ui.common.NodeContextBuilder;\r
+import org.simantics.browsing.ui.content.Viewpoint;\r
+import org.simantics.browsing.ui.content.ViewpointFactory;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Statement;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.layer0.Layer0;\r
+\r
+/**\r
+ * A first test version of a viewpoint that provides editing of the shared\r
+ * properties of multiple input resources.\r
+ */\r
+public class MultiInputPropertyViewpointFactory implements ViewpointFactory {\r
+\r
+    @Override\r
+    public Viewpoint create(PrimitiveQueryUpdater provider, final NodeContext context, ViewpointKey key) {\r
+\r
+        assert(provider != null);\r
+        assert(context != null);\r
+\r
+        return new LazyViewpoint(provider, context, key) {\r
+\r
+            @Override\r
+            public NodeContext[] children(ReadGraph graph) throws DatabaseException {\r
+                Resource[] rs = (Resource[]) context.getConstant(BuiltinKeys.INPUT);\r
+                if(rs.length == 0) return new NodeContext[0];\r
+                if(rs.length == 1) return new NodeContext[0];\r
+                Resource r = rs[0];\r
+                Layer0 l0 = Layer0.getInstance(graph);\r
+                Resource type = graph.getSingleType(r, l0.Entity);\r
+                for(int i=1;i<rs.length;i++) {\r
+                    Resource type2 = graph.getSingleType(rs[i], l0.Entity);\r
+                    if(!type.equals(type2)) return new NodeContext[0];\r
+                }\r
+\r
+                Collection<Statement> children = graph.getStatements(r, l0.HasProperty);\r
+\r
+                ArrayList<NodeContext> resultContexts = new ArrayList<NodeContext>();\r
+\r
+                for(Statement child : children) {\r
+\r
+                    ArrayList<Resource> objects = new ArrayList<Resource>();\r
+\r
+                    objects.add(child.getObject());\r
+\r
+                    boolean ok = true;\r
+                    for(int i=1;i<rs.length;i++) {\r
+                        Collection<Resource> objects2 = graph.getObjects(rs[1], child.getPredicate());\r
+                        if(objects2.size() != 1) {\r
+                            ok = false;\r
+                            break;\r
+                        }\r
+                        objects.add(objects2.iterator().next());\r
+                    }\r
+                    if(ok) {\r
+                        resultContexts.add(NodeContextBuilder.buildWithInput(new PropertyArray(child.getPredicate(), objects)));\r
+                    }\r
+\r
+                }\r
+\r
+                return resultContexts.toArray(new NodeContext[resultContexts.size()]);\r
+            }\r
+\r
+            @Override\r
+            public Boolean hasChildren(ReadGraph graph) throws DatabaseException {\r
+                return Boolean.valueOf(children(graph).length > 0);\r
+            }\r
+        };\r
+    }\r
+\r
+    @Override\r
+    public String toString() {\r
+        return "Properties";\r
+    }\r
+\r
+}\r