package com.google.gwt.sample.contacts.client;
import com.google.gwt.sample.contacts.client.event.AddContactEvent;
import com.google.gwt.sample.contacts.client.event.AddContactEventHandler;
import com.google.gwt.sample.contacts.client.event.ContactUpdatedEvent;
import com.google.gwt.sample.contacts.client.event.ContactUpdatedEventHandler;
import com.google.gwt.sample.contacts.client.event.EditContactEvent;
import com.google.gwt.sample.contacts.client.event.EditContactEventHandler;
import com.google.gwt.sample.contacts.client.event.EditContactCancelledEvent;
import com.google.gwt.sample.contacts.client.event.EditContactCancelledEventHandler;
import com.google.gwt.sample.contacts.client.presenter.ContactsPresenter;
import com.google.gwt.sample.contacts.client.presenter.EditContactPresenter;
import com.google.gwt.sample.contacts.client.presenter.Presenter;
import com.google.gwt.sample.contacts.client.view.ContactsView;
import com.google.gwt.sample.contacts.client.view.EditContactView;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.ui.HasWidgets;
public class AppController implements Presenter, ValueChangeHandler<String> {
private final HandlerManager eventBus;
private final ContactsServiceAsync rpcService;
private HasWidgets container;
public AppController(ContactsServiceAsync rpcService, HandlerManager eventBus) {
this.eventBus = eventBus;
this.rpcService = rpcService;
bind();
}
private void bind() {
History.addValueChangeHandler(this);
eventBus.addHandler(AddContactEvent.TYPE,
new AddContactEventHandler() {
public void onAddContact(AddContactEvent event) {
doAddNewContact();
}
});
eventBus.addHandler(EditContactEvent.TYPE,
new EditContactEventHandler() {
public void onEditContact(EditContactEvent event) {
doEditContact(event.getId());
}
});
eventBus.addHandler(EditContactCancelledEvent.TYPE,
new EditContactCancelledEventHandler() {
public void onEditContactCancelled(EditContactCancelledEvent event) {
doEditContactCancelled();
}
});
eventBus.addHandler(ContactUpdatedEvent.TYPE,
new ContactUpdatedEventHandler() {
public void onContactUpdated(ContactUpdatedEvent event) {
doContactUpdated();
}
});
}
private void doAddNewContact() {
History.newItem("add");
}
private void doEditContact(String id) {
History.newItem("edit", false);
Presenter presenter = new EditContactPresenter(rpcService, eventBus, new EditContactView(), id);
presenter.go(container);
}
private void doEditContactCancelled() {
History.newItem("list");
}
private void doContactUpdated() {
History.newItem("list");
}
public void go(final HasWidgets container) {
this.container = container;
if ("".equals(History.getToken())) {
History.newItem("list");
}
else {
History.fireCurrentHistoryState();
}
}
public void onValueChange(ValueChangeEvent<String> event) {
String token = event.getValue();
if (token != null) {
Presenter presenter = null;
if (token.equals("list")) {
presenter = new ContactsPresenter(rpcService, eventBus, new ContactsView());
}
else if (token.equals("add")) {
presenter = new EditContactPresenter(rpcService, eventBus, new EditContactView());
}
else if (token.equals("edit")) {
presenter = new EditContactPresenter(rpcService, eventBus, new EditContactView());
}
if (presenter != null) {
presenter.go(container);
}
}
}
}