com.linkcorp.mvp.client.AppController.java Source code

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Here is the source code for com.linkcorp.mvp.client.AppController.java

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/** 
 *   MVPGettingStarted Application.
 *
 *   Copyright 2011 Harmonic-Pharma
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 *   See http://www.harmonic-pharma.com/ for more information 
 *   about this app.
 */
package com.linkcorp.mvp.client;

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;
import com.linkcorp.mvp.client.event.AddConctactEventHandler;
import com.linkcorp.mvp.client.event.AddContactEvent;
import com.linkcorp.mvp.client.event.UpdatedContactEvent;
import com.linkcorp.mvp.client.event.UpdatedContactEventHandler;
import com.linkcorp.mvp.client.event.EditContactEvent;
import com.linkcorp.mvp.client.event.EditContactEventHandler;
import com.linkcorp.mvp.client.presenter.ContactsPresenter;
import com.linkcorp.mvp.client.presenter.EditContactPresenter;
import com.linkcorp.mvp.client.presenter.Presenter;
import com.linkcorp.mvp.client.service.ContactServiceAsync;
import com.linkcorp.mvp.client.view.ContactsView;
import com.linkcorp.mvp.client.view.EditContactView;
import com.linkcorp.mvp.shared.ContactDTO;

/**
 * @author Nelson Lionel KEMINSE
 * 18 juil. 2011 19:10:19
 */
public class AppController implements Presenter, ValueChangeHandler<String> {
    private final HandlerManager eventBus;
    private final ContactServiceAsync rpcService;
    private HasWidgets container;
    private ContactDTO contact;

    public AppController(ContactServiceAsync rpcService, HandlerManager eventBus) {
        this.rpcService = rpcService;
        this.eventBus = eventBus;
        bind();
    }

    @Override
    public void go(final HasWidgets container) {
        this.container = container;
        if ("".equals(History.getToken())) {
            History.newItem("list");
        } else {
            History.fireCurrentHistoryState();
        }
    }

    @Override
    public void bind() {
        History.addValueChangeHandler(this);

        this.eventBus.addHandler(AddContactEvent.TYPE, new AddConctactEventHandler() {
            @Override
            public void onAddContactEvent(AddContactEvent event) {
                doAddNewContact();
            }
        });

        this.eventBus.addHandler(EditContactEvent.TYPE, new EditContactEventHandler() {
            @Override
            public void onEditContact(EditContactEvent event) {
                contact = event.getContact();
                doEditContact(event.getContact());
            }
        });

        this.eventBus.addHandler(UpdatedContactEvent.TYPE, new UpdatedContactEventHandler() {

            public void onUpdatedContact(UpdatedContactEvent event) {
                doUpdatedContact();
            }
        });
    }

    private void doAddNewContact() {
        History.newItem("add");
    }

    private void doEditContact(ContactDTO contact) {
        History.newItem("edit", false);
        Presenter presenter = new EditContactPresenter(rpcService, this.eventBus, new EditContactView(), contact);
        presenter.go(this.container);
    }

    private void doUpdatedContact() {
        History.newItem("list");
    }

    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(), new ContactDTO());
            } else if (token.equals("edit")) {
                presenter = new EditContactPresenter(rpcService, eventBus, new EditContactView(), contact);
            }

            if (presenter != null) {
                presenter.go(container);
            }
        }
    }

    public AppController asWidget() {
        return this;
    }
}