Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scenegraph / src / org / simantics / scenegraph / g2d / nodes / provisional / GraphPropertyNode.java

diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/provisional/GraphPropertyNode.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/provisional/GraphPropertyNode.java
new file mode 100644 (file)
index 0000000..4a6962f
--- /dev/null
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/provisional/GraphPropertyNode.java
@@ -0,0 +1,120 @@
+/*******************************************************************************\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