[WICKET-5603] OnChangeAjaxBehavior attached to DropDownChoice produces two Ajax requests in Chrome v35

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.9.1, 7.0.0-M1
• Fix Version/s: 7.0.0-M3, 6.17.0
• Component/s: wicket
• Environment: Chrome 35.0.1916.114
• Assignee: Andrea Del Bene
• Reporter: Andrey Krasnopolsky
• Created: 28/May/14 19:49
• Updated: 30/Sep/14 12:42
• Resolved: 30/Sep/14 12:32

Description

I have a DropDownChoice with attached OnChangeAjaxBehavior, like this:

new DropDownChoice<>("dd", new Model<>(), Arrays.asList( "First", "Second"))
    .add( new OnChangeAjaxBehavior() {
        @Override
        protected void onUpdate(AjaxRequestTarget target) {
            System.out.println( "update" );
        }
});

When selecting any of drop down options, two Ajax requests being generated.
It behaves OK in IE, FF and Chrome v34, only Chrome v35 is affected

Issue Links

• breaks: WICKET-5711 OnChangeAjaxBehavior should listen for both 'inputchange' and 'change' events for TextField and TextArea
• is related to: WICKET-5611 Add AjaxChannel.DEFAULT constant = "0" and type "Queue"