Aha, got it ! On May 2, 2:14 am, Jambi <michael.lukaszc...@googlemail.com> wrote: > Seems that the onAddButtonClicked and onItemClicked methods perform some > actions that involve other Presenters/Views that listen to those kinds of > events. deleteSelectedContacts is just performing local changes that don´t > affect other views. If there would be a different view that is showing a > (for example) contact count and this view needs to know about some changes > in your contacts, you would fire an event in deleteSelectedContacts. > > Am Dienstag, 1. Mai 2012 15:01:20 UTC+2 schrieb Adio: > > > > > > > > > > > Hi everyone, now that i am working with GWT i am facing a problem with > > the event handling mechanism the first problem was ( > > >http://groups.google.com/group/google-web-toolkit/browse_thread/threa... > > ), but when i read this article MVP II ( > >https://developers.google.com/web-toolkit/articles/mvp-architecture-2 > > ) - actually i read it several times - i still don't understand when u > > to use EventBus mechanism and when not ? and if i have to use when u > > use EventBus Handler and HandlerManage ?. > > Here is what confuses me: > > > public class ContactsPresenter implements Presenter, > > ContactsView.Presenter<ContactDetails> { > > ...... > > public void onAddButtonClicked() { > > eventBus.fireEvent(new AddContactEvent()); > > } > > > public void onDeleteButtonClicked() { > > deleteSelectedContacts(); > > } > > > public void onItemClicked(ContactDetails contactDetails) { > > eventBus.fireEvent(new EditContactEvent(contactDetails.getId())); > > } > > > .... > > } > > > Why one method fires and event and the other just do some logic witch > > is defined the class ? > > > Thank you all for your replies. > > > the source code of the example is here : > >http://google-web-toolkit.googlecode.com/files/Tutorial-Contacts2.zip
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