Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.modeling / src / org / simantics / modeling / adapters / TerminalRemover.java

diff --git a/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/TerminalRemover.java b/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/TerminalRemover.java
new file mode 100644 (file)
index 0000000..6af06b1
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+++ b/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/TerminalRemover.java
@@ -0,0 +1,75 @@
+/*******************************************************************************\r
+ * Copyright (c) 2012 Association for Decentralized Information Management in\r
+ * 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.modeling.adapters;\r
+\r
+import java.util.Map;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.diagram.stubs.DiagramResource;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.modeling.ModelingResources;\r
+import org.simantics.modeling.adapters.Removers.ValidationResult;\r
+\r
+/**\r
+ * A remover implementation for symbol terminals.\r
+ * \r
+ * <p>\r
+ * Contrary to ConnectionRelationRemover, this remover will only remove the\r
+ * diagram side connection relations in addition to removing the terminal\r
+ * itself. Deleting a terminal from the symbol does not imply that the whole\r
+ * connection point needs to be removed from the component type configuration,\r
+ * only that the graphical representation of the connection point is removed.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ * @see ConnectionRelationRemover\r
+ */\r
+public class TerminalRemover extends ElementRemover {\r
+\r
+    public TerminalRemover(Resource terminal) {\r
+        super(terminal);\r
+    }\r
+\r
+    @Override\r
+    public String canRemove(ReadGraph graph, Map<Object, Object> aux) throws DatabaseException {\r
+        DiagramResource DIA = DiagramResource.getInstance(graph);\r
+        ModelingResources MOD = ModelingResources.getInstance(graph);\r
+\r
+        for (Resource diagramConnectionRelation : graph.getObjects(resource, DIA.HasConnectionPoint)) {\r
+            for (Resource connectionRelation : graph.getObjects(diagramConnectionRelation, MOD.DiagramConnectionRelationToConnectionRelation)) {\r
+                ValidationResult result = Removers.validateConnectionRelationRemoval(graph, connectionRelation, diagramConnectionRelation);\r
+                if (result.inUse())\r
+                    return Removers.formatError(graph, result);\r
+            }\r
+        }\r
+\r
+        return null;\r
+    }\r
+\r
+    @Override\r
+    public void remove(WriteGraph graph) throws DatabaseException {\r
+        Layer0 L0 = Layer0.getInstance(graph);\r
+        DiagramResource DIA = DiagramResource.getInstance(graph);\r
+\r
+        for (Resource diagramConnectionPoint : graph.getObjects(resource, DIA.HasConnectionPoint)) {\r
+            Resource diagramConnectionPointInverse = graph.getPossibleObject(diagramConnectionPoint, L0.InverseOf);\r
+            graph.deny(diagramConnectionPoint);\r
+            if (diagramConnectionPointInverse != null)\r
+                graph.deny(diagramConnectionPointInverse);\r
+        }\r
+\r
+        removeElement(graph);\r
+    }\r
+\r
+}\r