Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / element / handler / impl / StaticObjectAdapter.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/StaticObjectAdapter.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/StaticObjectAdapter.java
new file mode 100644 (file)
index 0000000..ff6b935
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/element/handler/impl/StaticObjectAdapter.java
@@ -0,0 +1,62 @@
+/*******************************************************************************\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.element.handler.impl;\r
+\r
+import org.simantics.g2d.element.ElementClass;\r
+import org.simantics.g2d.element.handler.Adapter;\r
+import org.simantics.utils.ObjectUtils;\r
+\r
+/**\r
+ * A generic single object adapter handler for use with {@link ElementClass}.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class StaticObjectAdapter implements Adapter {\r
+\r
+    private static final long serialVersionUID = -8713272704786672656L;\r
+\r
+    private final Object object;\r
+\r
+    public StaticObjectAdapter(Object object) {\r
+        if (object == null)\r
+            throw new IllegalArgumentException("null object");\r
+        this.object = object;\r
+    }\r
+\r
+    @SuppressWarnings("unchecked")\r
+    @Override\r
+    public <T> T adapt(Class<T> toClass) {\r
+        if (toClass == null)\r
+            throw new IllegalArgumentException("null class");\r
+        if (toClass.isInstance(object))\r
+            return (T) object;\r
+        return null;\r
+    }\r
+\r
+    @Override\r
+    public int hashCode() {\r
+        return ObjectUtils.hashCode(object);\r
+    }\r
+\r
+    @Override\r
+    public boolean equals(Object obj) {\r
+        if (this == obj)\r
+            return true;\r
+        if (obj == null)\r
+            return false;\r
+        if (getClass() != obj.getClass())\r
+            return false;\r
+        StaticObjectAdapter other = (StaticObjectAdapter) obj;\r
+        return ObjectUtils.objectEquals(object, other.object);\r
+    }\r
+\r
+}
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