[GROOVY-97] fix toString() equals() and hashCode() for listener dynamic proxies

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0-beta-3
• Assignee: James Strachan
• Reporter: James Strachan
• Created: 30/Dec/03 04:32
• Updated: 05/Jan/04 01:14
• Resolved: 05/Jan/04 01:14

Description

Listeners print null by default when toString() is called, which is very confusing.

groovy> b = new javax.swing.JButton("foo")
groovy> b.actionPerformed = { println("Found ${it}") }
groovy> println(b.actionListeners)
groovy>
[null]

when its really a dynamic proxy

groovy> b = new javax.swing.JButton("foo")
groovy> b.actionPerformed = { println("Found ${it}") }
groovy> b.actionListeners.each

{ println(it.class) }

groovy>
class $Proxy0

also we can't remove these listeners...

groovy> import java.util.Arrays
groovy> b = new javax.swing.JButton("foo")
groovy> b.actionPerformed = { println("Found ${it}") }
groovy> l = Arrays.asList(b.actionListeners).get(0)
groovy> println(l)
groovy> b.removeActionListener(l)
groovy> b.actionListeners
groovy>
null
Caught: java.lang.NullPointerException
java.lang.NullPointerException
at $Proxy0.equals(Unknown Source)