Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scenegraph.ui / src / org / simantics / scenegraph / ui / NodeProxy.java

diff --git a/bundles/org.simantics.scenegraph.ui/src/org/simantics/scenegraph/ui/NodeProxy.java b/bundles/org.simantics.scenegraph.ui/src/org/simantics/scenegraph/ui/NodeProxy.java
new file mode 100644 (file)
index 0000000..2b811c9
--- /dev/null
+++ b/bundles/org.simantics.scenegraph.ui/src/org/simantics/scenegraph/ui/NodeProxy.java
@@ -0,0 +1,106 @@
+/*******************************************************************************\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.scenegraph.ui;\r
+\r
+import java.lang.ref.WeakReference;\r
+\r
+import org.simantics.scenegraph.INode;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+class NodeProxy {\r
+\r
+    WeakReference<INode> ref;\r
+    String               id;\r
+\r
+    NodeProxy(INode n) {\r
+        this(n, null);\r
+    }\r
+\r
+    NodeProxy(INode n, String id) {\r
+        this.ref = new WeakReference<INode>(n);\r
+        this.id = id;\r
+    }\r
+\r
+    INode getNode() {\r
+        return ref.get();\r
+    }\r
+\r
+    @Override\r
+    public String toString() {\r
+        StringBuilder sb = new StringBuilder();\r
+        INode n = getNode();\r
+        if (id != null) {\r
+            sb.append("[");\r
+            sb.append(id);\r
+            sb.append("] ");\r
+        }\r
+        if (n == null) {\r
+            sb.append("(collected)");\r
+        } else {\r
+            sb.append(n.getSimpleClassName());\r
+        }\r
+        return sb.toString();\r
+    }\r
+\r
+    public String getTypeName() {\r
+        INode n = getNode();\r
+        return n == null ? "-" : n.getSimpleClassName();\r
+    }\r
+\r
+    public String getInternalId() {\r
+        INode n = getNode();\r
+        if (n == null)\r
+            return "-";\r
+        return n.getId().toString();\r
+    }\r
+\r
+    public String getId() {\r
+        return id;\r
+    }\r
+\r
+    @Override\r
+    public int hashCode() {\r
+        final int prime = 31;\r
+        int result = 1;\r
+        result = prime * result + ((id == null) ? 0 : id.hashCode());\r
+        INode node = getNode();\r
+        result = prime * result + ((node == null) ? 0 : node.hashCode());\r
+        return result;\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
+        NodeProxy other = (NodeProxy) obj;\r
+        if (id == null) {\r
+            if (other.id != null)\r
+                return false;\r
+        } else if (!id.equals(other.id))\r
+            return false;\r
+\r
+        INode node = getNode();\r
+        INode otherNode = other.getNode();\r
+        if (node == null || otherNode == null)\r
+            // Collected nodes are never equal to any other node\r
+            return false;\r
+\r
+        return node.equals(otherNode);\r
+    }\r
+\r
+}
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