Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / diagram / impl / DummyDiagramMutator.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/impl/DummyDiagramMutator.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/impl/DummyDiagramMutator.java
new file mode 100644 (file)
index 0000000..c892c91
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/impl/DummyDiagramMutator.java
@@ -0,0 +1,120 @@
+/*******************************************************************************\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.g2d.diagram.impl;\r
+\r
+import java.util.HashMap;\r
+import java.util.Map;\r
+\r
+import org.simantics.g2d.diagram.DiagramMutator;\r
+import org.simantics.g2d.diagram.IDiagram;\r
+import org.simantics.g2d.diagram.handler.ElementFactory;\r
+import org.simantics.g2d.element.ElementClass;\r
+import org.simantics.g2d.element.ElementClassProviders;\r
+import org.simantics.g2d.element.ElementClasses;\r
+import org.simantics.g2d.element.ElementHints;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.IElementClassProvider;\r
+import org.simantics.g2d.element.handler.impl.StaticObjectAdapter;\r
+import org.simantics.g2d.element.impl.Element;\r
+import org.simantics.g2d.elementclass.FlagClass;\r
+import org.simantics.g2d.elementclass.connection.ConnectionClass;\r
+import org.simantics.utils.datastructures.cache.ProvisionException;\r
+\r
+/**\r
+ * Diagrams manipulation requires a DiagramMutator. This one works without any\r
+ * backend system.\r
+ * \r
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class DummyDiagramMutator implements DiagramMutator {\r
+\r
+    public static final IElementClassProvider DEFAULT_PROVIDER = ElementClassProviders.mappedProvider(\r
+            ElementClasses.CONNECTION, ConnectionClass.CLASS.newClassWith(new StaticObjectAdapter(new Object())),\r
+            ElementClasses.FLAG, FlagClass.FLAGCLASS.newClassWith(new StaticObjectAdapter(new Object()))\r
+    );\r
+\r
+    IElementClassProvider classProvider;\r
+\r
+    private final Map<IElement, Object> map = new HashMap<IElement, Object>();\r
+\r
+    private final IDiagram diagram;\r
+\r
+    public DummyDiagramMutator(IDiagram diagram) {\r
+        this(diagram, DEFAULT_PROVIDER);\r
+    }\r
+\r
+    public DummyDiagramMutator(IDiagram diagram, IElementClassProvider classProvider) {\r
+        this.diagram = diagram;\r
+        this.classProvider = classProvider;\r
+\r
+        ensureClassProvision(ElementClasses.CONNECTION);\r
+        ensureClassProvision(ElementClasses.FLAG);\r
+    }\r
+\r
+    private void ensureClassProvision(Object key) {\r
+        ElementClass ec = classProvider.get(key);\r
+        if (ec == null)\r
+            throw new ProvisionException();\r
+    }\r
+\r
+    @Override\r
+    public void synchronizeHintsToBackend(IElement element) {\r
+        // No backend, nothing to synchronize\r
+    }\r
+\r
+    @Override\r
+    public void synchronizeElementOrder() {\r
+        // No backend, nothing to synchronize\r
+    }\r
+\r
+    @Override\r
+    public void register(IElement element, Object object) {\r
+        // No point in registering anything.\r
+        map.put(element, object);\r
+    }\r
+\r
+    private IElement spawn(ElementClass clazz) {\r
+        ElementFactory ef = diagram.getDiagramClass().getAtMostOneItemOfClass(ElementFactory.class);\r
+        if (ef != null)\r
+            return ef.spawnNew(clazz);\r
+        return Element.spawnNew(clazz);\r
+    }\r
+\r
+    @Override\r
+    public IElement newElement(ElementClass clazz) {\r
+        IElement element = spawn(clazz);\r
+        element.setHint(ElementHints.KEY_OBJECT, new Object());\r
+        return element;\r
+    }\r
+\r
+    @Override\r
+    public void modifyTransform(IElement element) {\r
+    }\r
+\r
+    @Override\r
+    public void commit() {\r
+        map.clear();\r
+    }\r
+\r
+    @Override\r
+    public void clear() {\r
+        map.clear();\r
+    }\r
+\r
+    @SuppressWarnings("unchecked")\r
+    @Override\r
+    public <T> T backendObject(IElement element) {\r
+        return (T) map.get(element);\r
+    }\r
+\r
+}\r