Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/UserSelectedViewpointFactoryQueryProcessor.java b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/UserSelectedViewpointFactoryQueryProcessor.java
new file mode 100644 (file)
index 0000000..30e5ca8
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/UserSelectedViewpointFactoryQueryProcessor.java
@@ -0,0 +1,77 @@
+/*******************************************************************************\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.Collection;\r
+import java.util.HashMap;\r
+\r
+import org.simantics.browsing.ui.BuiltinKeys;\r
+import org.simantics.browsing.ui.NodeContext;\r
+import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
+import org.simantics.browsing.ui.BuiltinKeys.SelectedViewpointFactoryKey;\r
+import org.simantics.browsing.ui.NodeContext.PrimitiveQueryKey;\r
+import org.simantics.browsing.ui.content.ViewpointFactory;\r
+import org.simantics.utils.datastructures.Pair;\r
+\r
+public class UserSelectedViewpointFactoryQueryProcessor extends AbstractPrimitiveQueryProcessor<ViewpointFactory> {\r
+\r
+    HashMap<NodeContext, ViewpointFactory> selections = new HashMap<NodeContext, ViewpointFactory>();\r
+    HashMap<NodeContext, Pair<PrimitiveQueryKey<?>, PrimitiveQueryUpdater>> updaters = new HashMap<NodeContext, Pair<PrimitiveQueryKey<?>, PrimitiveQueryUpdater>>();\r
+\r
+    @Override\r
+    public String toString() {\r
+        return "UserSelectedViewpointFactoryProcessor";\r
+    }\r
+\r
+    @Override\r
+    public Object getIdentifier() {\r
+        return BuiltinKeys.SelectedViewpointFactoryKey.class;\r
+    }\r
+\r
+    @Override\r
+    public ViewpointFactory query(PrimitiveQueryUpdater updater, NodeContext context,\r
+            PrimitiveQueryKey<ViewpointFactory> key) {\r
+\r
+        updaters.put(context, new Pair<PrimitiveQueryKey<?>, PrimitiveQueryUpdater>(key, updater));\r
+        ViewpointFactory result = selections.get(context);\r
+        if (result != null)\r
+            return result;\r
+\r
+        SelectedViewpointFactoryKey k = (SelectedViewpointFactoryKey) key;\r
+        Collection<ViewpointFactory> factories = k.getParameter(0);\r
+\r
+        if (factories.isEmpty())\r
+            return null;\r
+\r
+        return factories.iterator().next();\r
+    }\r
+\r
+    public ViewpointFactory getSelection(NodeContext context) {\r
+        return selections.get(context);\r
+    }\r
+\r
+    /**\r
+     * Invoked by the user interfaces for selecting viewpoints.\r
+     * \r
+     * @param context\r
+     * @param factory\r
+     */\r
+    @SuppressWarnings("unchecked")\r
+    public void select(NodeContext context, ViewpointFactory factory) {\r
+        selections.put(context, factory);\r
+        Pair<PrimitiveQueryKey<?>, PrimitiveQueryUpdater> p = updaters.get(context);\r
+        if (p.second == null)\r
+            throw new IllegalArgumentException("context not found in cache");\r
+        p.second.scheduleReplace(context, (PrimitiveQueryKey<ViewpointFactory>) p.first, factory);\r
+    }\r
+\r
+}\r