hello mario, @cagatay: thank you for your answer – it was the reason why i recognized that my answer wasn't delivered (my answer included basically the same statement as yours) – with this mail i try to resend my previous mail. (without links – maybe it's the reason for the lost mail?!???) -> @mario: you are welcome to visit the irian website -> products / jtracc for further information - and follow the links.
(*sorry* if sooner or later my first mail will be delivered and the answer is duplicated) my previous answer: there is also a second possible solution for this problem. advantage: you don't have to walk through the component tree once more. (if i got the idea mentioned by cagatay right) disadvantage: it's maybe a bit more work than the PhaseListener approach mentioned by cagatay. you can decorate all renderers and manually add (it is real adding - no replacement) your ValueChangeListener. if you would like to choose this solution you are welcome to look at the implementation of jtracc (see info above) - there i implemented such a wrapper (TranslationRendererWrapper). it's an other domain so you can ignore what's going on in this wrapper in detail. in your case you have to add a ValueChangeListener manually by using code like: ( (EditableValueHolder) component ).addValueChangeListener(...) before you do that you have to check if the component is a component which implements the EditableValueHolder interface! after adding the listener you can simply delegate to the decorated renderer. regards, gerhard 2007/11/12, Cagatay Civici <[EMAIL PROTECTED]>: > > Hi, > > From the docs; > > addValueChangeListener(javax.faces.event.ValueChangeListener listener) > Add a new ValueChangeListener to the set of listeners interested in > being notified when ValueChangeEvents occur. > > In addition check if the listener is not already added to the > listeners list before using this. > > Cagatay > > On Nov 12, 2007 4:10 PM, <[EMAIL PROTECTED]> wrote: > > Hi Cheers, but if a componenet already has a ValueChangeListener setted > > by the programmer for other reasons? The new ValueChangeListener si > > added or replace existings? > > > > Thank, Mario > > > > > > -----Original Message----- > > From: Cagatay Civici [mailto:[EMAIL PROTECTED] > > Sent: 12 novembre 2007 14.50 > > To: MyFaces Discussion > > Subject: Re: How know witch data in changed > > > > Hi, > > > > A phaselistener may work here, in after phase of restore view, > > traverse the component tree, if the component is an > > editablevalueholder, > > cast the component to editablevalueholder and add the > > valuechangelistener by addValueChangeListener or > > setValueChangeListener. > > > > A valuechangelistener implementation needs a processValueChange method > > or it can be a method binding, in your case the first option is a > > better alternative > > > > See editableValueHolder for more info. > > > > Cheers, > > > > Cagatay Civici > > [EMAIL PROTECTED] > > ps3 network id : facescontext > > > > On Nov 12, 2007 3:06 PM, <[EMAIL PROTECTED]> wrote: > > > > > > > > > > > > > > > Is there a way to set the same ValueChangeListener to all component of > > all > > > view without specific code in the page? I don't want leave my > > programmers > > > manage the logic to know witch component is changed, because I need to > > > managed this kind of problem in the framework code. > > > > > > > > > > > > Any suggestions? > > > > > > > > > > > > Thanks, M. > > > > > > > > > > > > ________________________________ > > > > > > > > > From: Gerhard Petracek [mailto:[EMAIL PROTECTED] > > > Sent: 12 novembre 2007 13.34 > > > To: MyFaces Discussion > > > Subject: Re: How know witch data in changed > > > > > > > > > > > > > > > hello mario, > > > > > > sounds like you are searching for the mechanism of > > ValueChangeListeners. > > > > > > regards, > > > gerhard > > > > > > > > > > > > > > > > > > 2007/11/12, [EMAIL PROTECTED] > > <[EMAIL PROTECTED]>: > > > > > > > > > > > > Hello, I need to know witch data of a view is changed. Is there a way > > to do > > > that with no specific code? I'm going to do it in a PhaseListener that > > > compare data of each component before and after "apply Request" phase. > > > > > > > > > > > > What do you think? > > > > > > > > > > > > Any suggestion is Appreciated. > > > > > > > > > > > > Regards > > > > > > Mario > > > > > > > > > > > > ________________________________ > > > > > > > > > This message is for the designated recipient only and may contain > > > privileged, proprietary, or otherwise private information. If you have > > > received it in error, please notify the sender immediately and delete > > the > > > original. Any other use of the email by you is prohibited. > > > > > > > > > > > > > > > -- > > > > > > http://www.irian.at > > > > > > Your JSF powerhouse - > > > JSF Consulting, Development and > > > Courses in English and German > > > > > > Professional Support for Apache MyFaces > > > > > > > > > > > > > > > > > > This message is for the designated recipient only and may contain > > > privileged, proprietary, or otherwise private information. If you have > > > received it in error, please notify the sender immediately and delete > > the > > > original. Any other use of the email by you is prohibited. > > > > > > This message is for the designated recipient only and may contain > privileged, proprietary, or otherwise private information. If you have > received it in error, please notify the sender immediately and delete the > original. Any other use of the email by you is prohibited. > > > -- http://www.irian.at Your JSF powerhouse - JSF Consulting, Development and Courses in English and German Professional Support for Apache MyFaces
