Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.common / src / org / simantics / browsing / ui / common / processors / DefaultPrunedChildrenProcessor.java

diff --git a/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/DefaultPrunedChildrenProcessor.java b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/DefaultPrunedChildrenProcessor.java
new file mode 100644 (file)
index 0000000..e7b9e04
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/DefaultPrunedChildrenProcessor.java
@@ -0,0 +1,100 @@
+/*******************************************************************************\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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