X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fflag%2FAbstractFlagType.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fflag%2FAbstractFlagType.java;h=0f1a96563348b196f46bbab138d7d65c34cfe3a7;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..0f1a96563
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/flag/AbstractFlagType.java
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * 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.diagram.flag;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.diagram.stubs.DiagramResource;
+import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;
+import org.simantics.g2d.elementclass.FlagClass;
+import org.simantics.g2d.elementclass.FlagClass.Mode;
+import org.simantics.g2d.elementclass.FlagClass.Type;
+import org.simantics.structural2.modelingRules.IModelingRules;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public abstract class AbstractFlagType implements IFlagType {
+
+    protected final Resource flag;
+    protected final IModelingRules modelingRules;
+
+    public AbstractFlagType(Resource flag, IModelingRules modelingRules) {
+        if (flag == null)
+            throw new NullPointerException("null flag");
+        if (modelingRules == null)
+            throw new NullPointerException("null modeling rules");
+        this.flag = flag;
+        this.modelingRules = modelingRules;
+    }
+
+    protected Type getType(ReadGraph graph) throws DatabaseException {
+        DiagramResource dr = DiagramResource.getInstance(graph);
+        FlagClass.Type t = DiagramGraphUtil.toFlagType(dr, graph.getPossibleObject(flag, dr.HasFlagType));
+        return t;
+    }
+
+    protected Mode getMode(ReadGraph graph) throws DatabaseException {
+        return getMode(graph, flag);
+    }
+
+    public static Mode getMode(ReadGraph graph, Resource flag) throws DatabaseException {
+        int joinCount = graph.getObjects(flag, DiagramResource.getInstance(graph).FlagIsJoinedBy).size();
+        if(joinCount == 0)
+            return FlagClass.Mode.Internal;
+        else if(joinCount == 1) {
+            Resource otherFlag = FlagUtil.getPossibleCounterpart(graph, flag);
+            if(otherFlag == null /* FIXME just to get around npe */ || 
+                    DiagramGraphUtil.onSameDiagram(graph, flag, otherFlag))
+                return FlagClass.Mode.Internal;
+            else
+                return FlagClass.Mode.External;
+        }
+        else
+            return new FlagClass.External(joinCount);
+    }
+
+}
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