Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/GetEnumerationValue.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/GetEnumerationValue.java
new file mode 100644 (file)
index 0000000..d9c729c
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/GetEnumerationValue.java
@@ -0,0 +1,92 @@
+/*******************************************************************************\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
+import java.util.List;\r
+import java.util.Set;\r
+\r
+import org.simantics.browsing.ui.common.modifiers.EnumeratedValue;\r
+import org.simantics.browsing.ui.common.modifiers.Enumeration;\r
+import org.simantics.browsing.ui.common.modifiers.EnumerationValue;\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.request.ResourceRead;\r
+import org.simantics.db.common.utils.NameUtils;\r
+import org.simantics.db.exception.AdaptionException;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.layer0.Layer0;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class GetEnumerationValue extends ResourceRead<EnumerationValue<Resource>> {\r
+\r
+    public GetEnumerationValue(Resource resource) {\r
+        super(resource);\r
+    }\r
+\r
+    @Override\r
+    public EnumerationValue<Resource> perform(ReadGraph graph) throws DatabaseException {\r
+        return enumerate(graph, resource);\r
+    }\r
+\r
+    public static EnumerationValue<Resource> enumerate(ReadGraph graph, Resource resource) throws DatabaseException {\r
+        Layer0 l0 = Layer0.getInstance(graph);\r
+        Set<Resource> types = graph.getTypes(resource);\r
+\r
+        // FIXME: this is a hack to make boolean values editable through a combo-box like other enumerations\r
+        if (types.contains(l0.Boolean)) {\r
+            List<EnumeratedValue<Resource>> values = new ArrayList<EnumeratedValue<Resource>>(2);\r
+            values.add(new EnumeratedValue<Resource>(Boolean.FALSE.toString(), l0.False));\r
+            values.add(new EnumeratedValue<Resource>(Boolean.TRUE.toString(), l0.True));\r
+            Boolean currentValue = graph.getPossibleValue(resource, Bindings.BOOLEAN);\r
+            Enumeration<Resource> enumeration = new Enumeration<Resource>(values);\r
+            EnumeratedValue<Resource> current = Boolean.TRUE.equals(currentValue) ? values.get(1) : values.get(0);\r
+            return new EnumerationValue<Resource>(enumeration, current);\r
+        } else {\r
+            for (Resource type : types) {\r
+                if (graph.hasStatement(type, l0.Enumeration, type)) {\r
+                    Collection<Resource> values = graph.getObjects(type, l0.ConsistsOf);\r
+                    List<EnumeratedValue<Resource>> result = new ArrayList<EnumeratedValue<Resource>>(values.size());\r
+                    for (Resource value : values) {\r
+                        result.add(new EnumeratedValue<Resource>(safeName(graph, value), value));\r
+                    }\r
+                    Enumeration<Resource> enumeration = new Enumeration<Resource>(result);\r
+                    return new EnumerationValue<Resource>(enumeration, enumeration.find(resource));\r
+                }\r
+            }\r
+        }\r
+        return null;\r
+    }\r
+\r
+    private static String safeName(ReadGraph graph, Resource value) throws DatabaseException {\r
+        return graph.syncRequest(new NameRequest(value));\r
+    }\r
+\r
+    public static class NameRequest extends ResourceRead<String> {\r
+        public NameRequest(Resource resource) {\r
+            super(resource);\r
+        }\r
+        @Override\r
+        public String perform(ReadGraph graph) throws DatabaseException {\r
+            try {\r
+                return graph.adapt(resource, String.class);\r
+            } catch (AdaptionException e) {\r
+                return NameUtils.getSafeName(graph, resource);\r
+            }\r
+        }\r
+    }\r
+\r
+}\r