Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / flag / AbstractFlagType.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/flag/AbstractFlagType.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/flag/AbstractFlagType.java
new file mode 100644 (file)
index 0000000..0f1a965
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+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/flag/AbstractFlagType.java
@@ -0,0 +1,67 @@
+/*******************************************************************************\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.diagram.flag;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.diagram.stubs.DiagramResource;\r
+import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;\r
+import org.simantics.g2d.elementclass.FlagClass;\r
+import org.simantics.g2d.elementclass.FlagClass.Mode;\r
+import org.simantics.g2d.elementclass.FlagClass.Type;\r
+import org.simantics.structural2.modelingRules.IModelingRules;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public abstract class AbstractFlagType implements IFlagType {\r
+\r
+    protected final Resource flag;\r
+    protected final IModelingRules modelingRules;\r
+\r
+    public AbstractFlagType(Resource flag, IModelingRules modelingRules) {\r
+        if (flag == null)\r
+            throw new NullPointerException("null flag");\r
+        if (modelingRules == null)\r
+            throw new NullPointerException("null modeling rules");\r
+        this.flag = flag;\r
+        this.modelingRules = modelingRules;\r
+    }\r
+\r
+    protected Type getType(ReadGraph graph) throws DatabaseException {\r
+        DiagramResource dr = DiagramResource.getInstance(graph);\r
+        FlagClass.Type t = DiagramGraphUtil.toFlagType(dr, graph.getPossibleObject(flag, dr.HasFlagType));\r
+        return t;\r
+    }\r
+\r
+    protected Mode getMode(ReadGraph graph) throws DatabaseException {\r
+        return getMode(graph, flag);\r
+    }\r
+\r
+    public static Mode getMode(ReadGraph graph, Resource flag) throws DatabaseException {\r
+        int joinCount = graph.getObjects(flag, DiagramResource.getInstance(graph).FlagIsJoinedBy).size();\r
+        if(joinCount == 0)\r
+            return FlagClass.Mode.Internal;\r
+        else if(joinCount == 1) {\r
+            Resource otherFlag = FlagUtil.getPossibleCounterpart(graph, flag);\r
+            if(otherFlag == null /* FIXME just to get around npe */ || \r
+                    DiagramGraphUtil.onSameDiagram(graph, flag, otherFlag))\r
+                return FlagClass.Mode.Internal;\r
+            else\r
+                return FlagClass.Mode.External;\r
+        }\r
+        else\r
+            return new FlagClass.External(joinCount);\r
+    }\r
+\r
+}
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