-/*******************************************************************************\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.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.db.ReadGraph;\r
-import org.simantics.db.Resource;\r
-import org.simantics.db.exception.DatabaseException;\r
-import org.simantics.layer0.Layer0;\r
-\r
-/**\r
- * A very simple viewpoint that by default browses Consists Of relations and\r
- * accepts as objects any children that are of any of the specified accepted\r
- * types.\r
- * \r
- * <p>\r
- * The accepted types must be returned through {@link #getAcceptedTypes()}\r
- * </p>\r
- * \r
- * <p>\r
- * The children production can be customized by overriding\r
- * {@link #getPotentialChildren(ReadGraph, Resource)}. Whatever is produced by this\r
- * method will be filtered through the list of accepted resource types.\r
- * </p>\r
- * \r
- * <p>\r
- * IMPORTANT: it is vital to actually implement this class and override the\r
- * {@link #getAcceptedTypes(ReadGraph)} method in the process. Otherwise the\r
- * equality comparisons of the resource queries used within LazyViewpoint will\r
- * not work properly!\r
- * </p>\r
- * \r
- * @author Tuukka Lehtonen\r
- */\r
-public abstract class LazyTypeAcceptViewpoint extends LazyViewpoint {\r
- \r
- public LazyTypeAcceptViewpoint(PrimitiveQueryUpdater updater, NodeContext context, ViewpointKey key) {\r
- super(updater, context, key);\r
- }\r
-\r
- protected abstract Resource[] getAcceptedTypes(ReadGraph g);\r
- \r
- protected Collection<Resource> getPotentialChildren(ReadGraph g, Resource r) throws DatabaseException {\r
- Layer0 L0 = Layer0.getInstance(g);\r
- return g.getObjects(r, L0.ConsistsOf);\r
- }\r
-\r
- @Override\r
- public NodeContext[] children(ReadGraph g) throws DatabaseException {\r
- Resource input = getInput(Resource.class);\r
- Resource[] accepted = getAcceptedTypes(g);\r
- Collection<Resource> children = getPotentialChildren(g, input);\r
- ArrayList<NodeContext> resultContexts = new ArrayList<NodeContext>();\r
- for (Resource child : children) {\r
- for (Resource acc : accepted) {\r
- if (g.isInstanceOf(child, acc))\r
- resultContexts.add(NodeContextBuilder.buildWithInput(child));\r
- }\r
- }\r
- return resultContexts.toArray(new NodeContext[resultContexts.size()]);\r
- }\r
-\r
- @Override\r
- public Boolean hasChildren(ReadGraph g) throws DatabaseException {\r
- return Boolean.valueOf(children(g).length > 0);\r
- }\r
-\r
- /*\r
- public static class Stub extends LazyTypeAcceptViewpoint {\r
- Resource[] acceptedTypes;\r
- public Stub(PrimitiveQueryUpdater updater, INodeContext context, ViewpointKey key, Resource[] acceptedTypes) {\r
- super(updater, context, key);\r
- this.acceptedTypes = acceptedTypes;\r
- }\r
- @Override\r
- protected Resource[] getAcceptedTypes(Graph g) {\r
- return acceptedTypes;\r
- }\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.ArrayList;
+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.common.NodeContextBuilder;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.layer0.Layer0;
+
+/**
+ * A very simple viewpoint that by default browses Consists Of relations and
+ * accepts as objects any children that are of any of the specified accepted
+ * types.
+ *
+ * <p>
+ * The accepted types must be returned through {@link #getAcceptedTypes()}
+ * </p>
+ *
+ * <p>
+ * The children production can be customized by overriding
+ * {@link #getPotentialChildren(ReadGraph, Resource)}. Whatever is produced by this
+ * method will be filtered through the list of accepted resource types.
+ * </p>
+ *
+ * <p>
+ * IMPORTANT: it is vital to actually implement this class and override the
+ * {@link #getAcceptedTypes(ReadGraph)} method in the process. Otherwise the
+ * equality comparisons of the resource queries used within LazyViewpoint will
+ * not work properly!
+ * </p>
+ *
+ * @author Tuukka Lehtonen
+ */
+public abstract class LazyTypeAcceptViewpoint extends LazyViewpoint {
+
+ public LazyTypeAcceptViewpoint(PrimitiveQueryUpdater updater, NodeContext context, ViewpointKey key) {
+ super(updater, context, key);
+ }
+
+ protected abstract Resource[] getAcceptedTypes(ReadGraph g);
+
+ protected Collection<Resource> getPotentialChildren(ReadGraph g, Resource r) throws DatabaseException {
+ Layer0 L0 = Layer0.getInstance(g);
+ return g.getObjects(r, L0.ConsistsOf);
+ }
+
+ @Override
+ public NodeContext[] children(ReadGraph g) throws DatabaseException {
+ Resource input = getInput(Resource.class);
+ Resource[] accepted = getAcceptedTypes(g);
+ Collection<Resource> children = getPotentialChildren(g, input);
+ ArrayList<NodeContext> resultContexts = new ArrayList<NodeContext>();
+ for (Resource child : children) {
+ for (Resource acc : accepted) {
+ if (g.isInstanceOf(child, acc))
+ resultContexts.add(NodeContextBuilder.buildWithInput(child));
+ }
+ }
+ return resultContexts.toArray(new NodeContext[resultContexts.size()]);
+ }
+
+ @Override
+ public Boolean hasChildren(ReadGraph g) throws DatabaseException {
+ return Boolean.valueOf(children(g).length > 0);
+ }
+
+ /*
+ public static class Stub extends LazyTypeAcceptViewpoint {
+ Resource[] acceptedTypes;
+ public Stub(PrimitiveQueryUpdater updater, INodeContext context, ViewpointKey key, Resource[] acceptedTypes) {
+ super(updater, context, key);
+ this.acceptedTypes = acceptedTypes;
+ }
+ @Override
+ protected Resource[] getAcceptedTypes(Graph g) {
+ return acceptedTypes;
+ }
+ }
+ */
+}
Code Review / simantics / platform.git / blobdiff