java - Eclipse DatabindingContext valuechange Listener => dirty -

i have dialog show values. need know if user has changed something.

all fields wrapped in eclipse databindingcontext.

... bindingcontext.bindvalue(process_observable_milage, process_bean_mileage, new updatevaluestrategy(), null); ... 

if change fields, propertychangesupport listener inside model gets fired. (setter of property called).

this.firepropertychange(signalentity.signalname, this.signalname, this.signalname = name); 

now need global listener detect if value changed.

i tried following without success:

    iobservablevalue globalvalidity = new writablevalue();     globalvalidity.addchangelistener(new ichangelistener() {         @override         public void handlechange(changeevent event) {              dirty = true;         }     });     bindingcontext.bindvalue(globalvalidity, new aggregatevalidationstatus(bindingcontext.getbindings(), aggregatevalidationstatus.max_severity), null, null); 

this class afterconvertvalidators added. thought have use "addvaluechangelistener" instead not working.

    iobservablevalue globalvalidity = new writablevalue();     globalvalidity.addvaluechangelistener(new ivaluechangelistener() {         @override         public void handlevaluechange(valuechangeevent event) {             dirty = true;         }     });     bindingcontext.bindvalue(globalvalidity, new aggregatevalidationstatus(bindingcontext.getbindings(), aggregatevalidationstatus.max_severity), null, null); 

any ideas how achieve this?

best regards

i use:

iobservablevalue seterror = pojoproperties.value("error").observe(new seterror());  bindingcontext.bindvalue(seterror, new aggregatevalidationstatus(bindingcontext.getbindings(), aggregatevalidationstatus.max_severity));   private class seterror {   public istatus geterror()   {      return validationstatus.ok();   }    public void seterror(final istatus status)   {     final string msg = status.isok() ? null : status.getmessage();      // todo deal message / status   } }