+/*******************************************************************************\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.common.processors;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.HashSet;\r
+import java.util.Set;\r
+\r
+import org.simantics.browsing.ui.BuiltinKeys;\r
+import org.simantics.browsing.ui.NodeContext;\r
+import org.simantics.browsing.ui.NodeQueryManager;\r
+import org.simantics.browsing.ui.SelectionRequest;\r
+import org.simantics.browsing.ui.Tester;\r
+import org.simantics.browsing.ui.NodeContext.QueryKey;\r
+import org.simantics.browsing.ui.content.PrunedChildrenResult;\r
+import org.simantics.browsing.ui.content.ViewpointContribution;\r
+\r
+public class DefaultPrunedChildrenProcessor extends AbstractNodeQueryProcessor<PrunedChildrenResult> {\r
+\r
+ @Override\r
+ public QueryKey<PrunedChildrenResult> getIdentifier() {\r
+ return BuiltinKeys.PRUNED_CHILDREN;\r
+ }\r
+\r
+ @Override\r
+ public PrunedChildrenResult query(NodeQueryManager manager, NodeContext context) {\r
+\r
+ Collection<ViewpointContribution> contributions = manager.query(context, BuiltinKeys.VIEWPOINT_CONTRIBUTIONS);\r
+ if (contributions == null)\r
+ return PrunedChildrenResult.EMPTY;\r
+\r
+ Set<NodeContext> childSet = new HashSet<NodeContext>();\r
+ ArrayList<NodeContext> children = new ArrayList<NodeContext>();\r
+\r
+ // Gather NodeContexts from all viewpoint contributions\r
+ // into the 'children' result list to preserve the order.\r
+ // 'childSet' is used to prevent duplicate contributions.\r
+ for (ViewpointContribution contribution : contributions) {\r
+ Class<?> clazz = contribution.getInputClass();\r
+ if (clazz.isInstance(context.getConstant(BuiltinKeys.INPUT))) {\r
+ Tester test = contribution.getNodeContextTester();\r
+ if (test == null || test.test(manager, context)) {\r
+ Collection<NodeContext> contrib = contribution.getContribution();\r
+ children.ensureCapacity(children.size() + contrib.size());\r
+ for (NodeContext nc : contrib)\r
+ if (childSet.add(nc))\r
+ children.add(nc);\r
+ }\r
+ }\r
+ }\r
+\r
+// Viewpoint viewpoint = manager.query(context, BuiltinKeys.SELECTED_VIEWPOINT);\r
+// if (viewpoint == null)\r
+// return PrunedChildrenResult.EMPTY;\r
+//\r
+// INodeContext[] children = viewpoint.getChildren();\r
+\r
+ Collection<SelectionRequest> selectionRequests = manager.query(context, BuiltinKeys.SELECTION_REQUESTS);\r
+ if (selectionRequests == null)\r
+ return new PrunedChildrenResult(children.size(), children.toArray(NodeContext.NONE));\r
+\r
+ SelectionRequest[] reqs = selectionRequests.toArray(new SelectionRequest[selectionRequests.size()]);\r
+\r
+ ArrayList<NodeContext> pruned = new ArrayList<NodeContext>();\r
+ for (NodeContext ctx : children) {\r
+ boolean add = true;\r
+\r
+ if (selectionRequests != null) {\r
+ for(SelectionRequest req : reqs) {\r
+ if (req.getRequest() == SelectionRequest.Request.FILTER) {\r
+ if (req.isIncluded(manager, ctx)) {\r
+ add = false;\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ if (add)\r
+ pruned.add(ctx);\r
+ }\r
+ return new PrunedChildrenResult(children.size(), pruned.toArray(NodeContext.NONE));\r
+ }\r
+\r
+ @Override\r
+ public String toString() {\r
+ return "PrunedChildrenProcessor";\r
+ }\r
+\r
+}
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