Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / synchronization / graph / RemoveBranchpoint.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/RemoveBranchpoint.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/RemoveBranchpoint.java
new file mode 100644 (file)
index 0000000..5251fc4
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/RemoveBranchpoint.java
@@ -0,0 +1,57 @@
+/*******************************************************************************\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.synchronization.graph;\r
+\r
+import java.util.Collection;\r
+import java.util.Iterator;\r
+\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.diagram.content.ConnectionUtil;\r
+import org.simantics.diagram.stubs.DiagramResource;\r
+import org.simantics.diagram.synchronization.ModificationAdapter;\r
+import org.simantics.g2d.element.ElementHints;\r
+import org.simantics.g2d.element.IElement;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class RemoveBranchpoint extends ModificationAdapter {\r
+\r
+    Resource element;\r
+\r
+    public RemoveBranchpoint(IElement element) {\r
+        super(REMOVE_BRANCH_PRIORITY);\r
+        this.element = element.getHint(ElementHints.KEY_OBJECT);\r
+        assert element != null;\r
+    }\r
+\r
+    @Override\r
+    public void perform(WriteGraph g) throws DatabaseException {\r
+        DiagramResource dr = DiagramResource.getInstance(g);\r
+        Collection<Resource> connectors = g.getObjects(element, dr.AreConnected);\r
+\r
+        ConnectionUtil cu = new ConnectionUtil(g);\r
+        cu.removeConnectionPart(element);\r
+\r
+        // If this *was* a route point, reconnect the connectors previously\r
+        // connected to the route point. Otherwise just leave it.\r
+        if (connectors.size() == 2) {\r
+            Iterator<Resource> it = connectors.iterator();\r
+            Resource c1 = it.next();\r
+            Resource c2 = it.next();\r
+            cu.connect(c1, c2);\r
+        }\r
+    }\r
+\r
+}\r