-/*******************************************************************************\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.Collection;\r
-\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.content.Viewpoint;\r
-import org.simantics.browsing.ui.content.ViewpointFactory;\r
-import org.simantics.db.ReadGraph;\r
-import org.simantics.db.exception.DatabaseException;\r
-\r
-/**\r
- * Extend and implement {@link #getChildren(ReadGraph, NodeContext)} to create a\r
- * viewpoint factory that reads from the graph database.\r
- * \r
- * @author Antti Villberg\r
- */\r
-public abstract class LazyViewpointFactory implements ViewpointFactory {\r
-\r
- @Override\r
- public Viewpoint create(PrimitiveQueryUpdater updater,\r
- NodeContext context, ViewpointKey key) {\r
- return new LazyViewpoint(updater, context, key) {\r
- @Override\r
- public NodeContext[] children(ReadGraph graph) throws DatabaseException {\r
- return toContextsWithInput(LazyViewpointFactory.this.\r
- getChildren(graph, context));\r
- }\r
-\r
- @Override\r
- public Boolean hasChildren(ReadGraph graph) throws DatabaseException {\r
- return children(graph).length > 0;\r
- }\r
-\r
- @Override\r
- public String toString() {\r
- return LazyViewpointFactory.this.toString();\r
- }\r
-\r
- @Override\r
- public Object getIdentity() {\r
- return LazyViewpointFactory.this.getClass();\r
- }\r
- };\r
- }\r
-\r
- abstract protected Collection<?> getChildren(ReadGraph g, NodeContext context) throws DatabaseException;\r
-\r
- protected boolean hasChildren(ReadGraph g, NodeContext context) throws DatabaseException {\r
- return !getChildren(g, context).isEmpty();\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.browsing.ui.graph.impl;
+
+import java.util.Collection;
+
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.PrimitiveQueryUpdater;
+import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;
+import org.simantics.browsing.ui.content.Viewpoint;
+import org.simantics.browsing.ui.content.ViewpointFactory;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.exception.DatabaseException;
+
+/**
+ * Extend and implement {@link #getChildren(ReadGraph, NodeContext)} to create a
+ * viewpoint factory that reads from the graph database.
+ *
+ * @author Antti Villberg
+ */
+public abstract class LazyViewpointFactory implements ViewpointFactory {
+
+ @Override
+ public Viewpoint create(PrimitiveQueryUpdater updater,
+ NodeContext context, ViewpointKey key) {
+ return new LazyViewpoint(updater, context, key) {
+ @Override
+ public NodeContext[] children(ReadGraph graph) throws DatabaseException {
+ return toContextsWithInput(LazyViewpointFactory.this.
+ getChildren(graph, context));
+ }
+
+ @Override
+ public Boolean hasChildren(ReadGraph graph) throws DatabaseException {
+ return children(graph).length > 0;
+ }
+
+ @Override
+ public String toString() {
+ return LazyViewpointFactory.this.toString();
+ }
+
+ @Override
+ public Object getIdentity() {
+ return LazyViewpointFactory.this.getClass();
+ }
+ };
+ }
+
+ abstract protected Collection<?> getChildren(ReadGraph g, NodeContext context) throws DatabaseException;
+
+ protected boolean hasChildren(ReadGraph g, NodeContext context) throws DatabaseException {
+ return !getChildren(g, context).isEmpty();
+ }
+
+}