Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.swt / src / org / simantics / browsing / ui / swt / StandardContextTypesQueryProcessor.java

diff --git a/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/StandardContextTypesQueryProcessor.java b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/StandardContextTypesQueryProcessor.java
new file mode 100644 (file)
index 0000000..c8ad0fa
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/StandardContextTypesQueryProcessor.java
@@ -0,0 +1,56 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2012 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.swt;\r
+\r
+import java.util.Collections;\r
+import java.util.Set;\r
+\r
+import org.simantics.browsing.ui.NodeContext;\r
+import org.simantics.browsing.ui.NodeContext.PrimitiveQueryKey;\r
+import org.simantics.browsing.ui.common.node.StandardNodes;\r
+import org.simantics.browsing.ui.graph.impl.CommonKeys;\r
+import org.simantics.browsing.ui.graph.impl.LazyGraphQueryProcessor;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.ui.utils.ResourceAdaptionUtils;\r
+import org.simantics.utils.Container;\r
+\r
+public class StandardContextTypesQueryProcessor extends LazyGraphQueryProcessor<Set<Resource>> {\r
+\r
+    @Override\r
+    public String toString() {\r
+        return "Standard Context Types";\r
+    }\r
+\r
+    @Override\r
+    public Object getIdentifier() {\r
+        return CommonKeys.STANDARD_CONTEXT_TYPES;\r
+    }\r
+\r
+    @Override\r
+    protected Set<Resource> initial() {\r
+        return Collections.emptySet();\r
+    }\r
+\r
+    @Override\r
+    protected Set<Resource> compute(ReadGraph graph, NodeContext context, PrimitiveQueryKey<Container<Set<Resource>>> key) throws DatabaseException {\r
+        Object input = context.getConstant(StandardNodes.CONTEXT);\r
+        Resource resource = ResourceAdaptionUtils.toSingleResource(input);\r
+        if(resource != null) {\r
+            return graph.getTypes(resource);\r
+        } else {\r
+            return Collections.emptySet();\r
+        }\r
+    }\r
+\r
+}\r