moved examples under doc per Erik

1 files changed, 93 insertions, 0 deletions

diff --git a/docs/dist/doc/examples/bean/BoundPoint.java b/docs/dist/doc/examples/bean/BoundPoint.java
new file mode 100644
index 000000000..c247ca9cd
--- /dev/null
+++ b/docs/dist/doc/examples/bean/BoundPoint.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 1998-2002 Xerox Corporation.  All rights reserved.
+ *
+ * Use and copying of this software and preparation of derivative works based
+ * upon this software are permitted.  Any distribution of this software or
+ * derivative works must comply with all applicable United States export
+ * control laws.
+ *
+ * This software is made available AS IS, and Xerox Corporation makes no
+ * warranty about the software, its performance or its conformity to any
+ * specification.
+ */
+package bean;
+
+import java.beans.*;
+import java.io.Serializable;
+
+/*
+ * Add bound properties and serialization to point objects 
+ */
+
+aspect BoundPoint {
+  /*
+   * privately introduce a field into Point to hold the property
+   * change support object.  `this' is a reference to a Point object. 
+   */
+  private PropertyChangeSupport Point.support = new PropertyChangeSupport(this);
+
+  /*
+   * Introduce the property change registration methods into Point.
+   * also introduce implementation of the Serializable interface.
+   */
+  public void Point.addPropertyChangeListener(PropertyChangeListener listener){
+    support.addPropertyChangeListener(listener);
+  }
+
+  public void Point.addPropertyChangeListener(String propertyName, 
+                                              PropertyChangeListener listener){
+	
+    support.addPropertyChangeListener(propertyName, listener);
+  }
+
+  public void Point.removePropertyChangeListener(String propertyName, 
+                                                 PropertyChangeListener listener) {
+    support.removePropertyChangeListener(propertyName, listener);
+  }
+
+  public void Point.removePropertyChangeListener(PropertyChangeListener listener) {
+    support.removePropertyChangeListener(listener);
+  }
+
+  public void Point.hasListeners(String propertyName) {
+    support.hasListeners(propertyName);
+  }
+
+  declare parents: Point implements Serializable;
+
+  /**
+   * Pointcut describing the set<property> methods on Point.
+   * (uses a wildcard in the method name)
+   */
+  pointcut setter(Point p): call(void Point.set*(*)) && target(p);
+
+  /**
+   * Advice to get the property change event fired when the
+   * setters are called. It's around advice because you need 
+   * the old value of the property.
+   */
+  void around(Point p): setter(p) {
+	String propertyName = 
+      thisJoinPointStaticPart.getSignature().getName().substring("set".length());
+	int oldX = p.getX();
+	int oldY = p.getY();
+	proceed(p);
+	if (propertyName.equals("X")){
+      firePropertyChange(p, propertyName, oldX, p.getX());
+	} else {
+      firePropertyChange(p, propertyName, oldY, p.getY());
+	} 
+  }
+
+  /*
+   * Utility to fire the property change event.
+   */
+  void firePropertyChange(Point p, 
+                          String property, 
+                          double oldval, 
+                          double newval) {
+	p.support.firePropertyChange(property, 
+                                 new Double(oldval), 
+                                 new Double(newval));
+  }
+}