+/*******************************************************************************\r
+ * Copyright (c) 2010 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.scenegraph.g2d.nodes.provisional;\r
+\r
+import java.awt.geom.Rectangle2D;\r
+import java.beans.PropertyChangeEvent;\r
+import java.beans.PropertyChangeListener;\r
+import java.lang.reflect.Field;\r
+import java.lang.reflect.Modifier;\r
+import java.util.HashMap;\r
+import java.util.Map;\r
+import java.util.concurrent.ConcurrentHashMap;\r
+\r
+import org.simantics.scenegraph.g2d.G2DNode;\r
+\r
+/**\r
+ * @author Antti Villberg\r
+ */\r
+public abstract class GraphPropertyNode extends G2DNode {\r
+\r
+ private static final long serialVersionUID = 245761992671850588L;\r
+\r
+ private static Map<Class<? extends GraphPropertyNode>, Map<String, Field>> fieldCache = new ConcurrentHashMap<Class<? extends GraphPropertyNode>, Map<String, Field>>();\r
+\r
+ protected transient final Map<String, Field> fields;\r
+\r
+ private PropertyChangeListener fieldListener = null;\r
+\r
+ protected GraphPropertyNode() {\r
+ this.fields = getFields(getClass());\r
+ }\r
+\r
+ @Override\r
+ public void init() {\r
+ super.init();\r
+ addEventHandler(this);\r
+ }\r
+\r
+ @Override\r
+ public void cleanup() {\r
+ removeEventHandler(this);\r
+ super.cleanup();\r
+ }\r
+\r
+ public void setFieldListener(PropertyChangeListener listener) {\r
+ this.fieldListener = listener;\r
+ }\r
+\r
+ public void propertyChange(String field, Object value) {\r
+ }\r
+\r
+ public void setProperty(String field, Object value) {\r
+ Field f = fields.get(field);\r
+ if (f == null) {\r
+ System.err.println("GraphPropertyNode tried to set undefined property '" + field + "'");\r
+ return;\r
+ }\r
+ try {\r
+ //System.out.println("setting field '" + field + "'");\r
+ f.set(this, value);\r
+ propertyChange(field, value);\r
+ } catch (IllegalArgumentException e) {\r
+ e.printStackTrace();\r
+ } catch (IllegalAccessException e) {\r
+ e.printStackTrace();\r
+ }\r
+ }\r
+\r
+ public void commitProperty(String field, Object value) {\r
+ if (fieldListener != null) {\r
+ fieldListener.propertyChange(new PropertyChangeEvent(this, field, null, value));\r
+ }\r
+ }\r
+\r
+ public boolean hitTest(double x, double y, double tolerance) {\r
+ return false;\r
+ }\r
+\r
+ @Override\r
+ public Rectangle2D getBoundsInLocal() {\r
+ return null;\r
+ }\r
+\r
+ private static Map<String, Field> getFields(Class<? extends GraphPropertyNode> clazz) {\r
+ Map<String, Field> fields = fieldCache.get(clazz);\r
+ if (fields != null)\r
+ return fields;\r
+ fields = calculateFields(clazz);\r
+ fieldCache.put(clazz, fields);\r
+ return fields;\r
+ }\r
+\r
+ private static Map<String, Field> calculateFields(Class<? extends GraphPropertyNode> clazz) {\r
+ Map<String, Field> result = new HashMap<String, Field>();\r
+ for (Class<?> cls = clazz; cls != null && !GraphPropertyNode.class.equals(cls); cls = clazz.getSuperclass()) {\r
+ for (Field f : cls.getFields()) {\r
+ int mod = f.getModifiers();\r
+ if (Modifier.isStatic(mod))\r
+ continue;\r
+ if (Modifier.isTransient(mod))\r
+ continue;\r
+ if (Modifier.isFinal(mod))\r
+ continue;\r
+ if (!result.containsKey(f.getName()))\r
+ result.put(f.getName(), f);\r
+ }\r
+ }\r
+ return result;\r
+ }\r
+\r
+}\r