/**
* Copyright 2010 Daniel Guermeur and Amy Unruh
*
* 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://connectrapp.appspot.com/ for a demo, and links to more information
* about this app and the book that it accompanies.
*/
package com.metadot.book.connectr.client.presenter;
import java.util.Set;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.HasClickHandlers;
import com.google.gwt.event.shared.SimpleEventBus;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.HasValue;
import com.google.gwt.user.client.ui.HasWidgets;
import com.google.gwt.user.client.ui.Widget;
import com.metadot.book.connectr.client.event.FriendEditCancelledEvent;
import com.metadot.book.connectr.client.event.FriendUpdatedEvent;
import com.metadot.book.connectr.client.helper.RPCCall;
import com.metadot.book.connectr.client.service.FriendsServiceAsync;
import com.metadot.book.connectr.shared.FriendDTO;
public class FriendEditPresenter implements Presenter {
public interface Display {
HasClickHandlers getAddUrlButton();
HasClickHandlers getCancelButton();
String getDeletedUrl(ClickEvent event);
HasValue<String> getEmailAddress();
HasValue<String> getFirstName();
HasValue<String> getLastName();
HasClickHandlers getList();
HasClickHandlers getSaveButton();
HasValue<String> getUrl();
void setData(Set<String> urls);
Widget asWidget();
}
private FriendDTO friend;
private final FriendsServiceAsync rpcService;
private final SimpleEventBus eventBus;
private final Display display;
public FriendEditPresenter(FriendsServiceAsync rpcService, SimpleEventBus eventBus, Display display) {
this.rpcService = rpcService;
this.eventBus = eventBus;
this.display = display;
this.friend = new FriendDTO();
bind();
}
public FriendEditPresenter(final FriendsServiceAsync rpcService, SimpleEventBus eventBus, Display display, final String id) {
this(rpcService, eventBus, display);
if (id == null)
return;
new RPCCall<FriendDTO>() {
@Override
protected void callService(AsyncCallback<FriendDTO> cb) {
rpcService.getFriend(id, cb);
}
@Override
public void onSuccess(FriendDTO result) {
friend = result;
FriendEditPresenter.this.display.getFirstName().setValue(friend.getFirstName());
FriendEditPresenter.this.display.getLastName().setValue(friend.getLastName());
FriendEditPresenter.this.display.getEmailAddress().setValue(friend.getEmailAddress());
FriendEditPresenter.this.display.setData(friend.getUrls());
}
@Override
public void onFailure(Throwable caught) {
Window.alert("Error retrieving friend...");
}
}.retry(3);
}
public void bind() {
this.display.getSaveButton().addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
doSave();
}
});
this.display.getAddUrlButton().addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
addURL();
}
});
this.display.getCancelButton().addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
GWT.log("FriendEditPresenter: Firing FriendEditCancelledEvent");
eventBus.fireEvent(new FriendEditCancelledEvent());
}
});
if (display.getList() != null)
display.getList().addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
String url = display.getDeletedUrl(event);
if (url != null) {
deleteUrl(url);
}
}
private void deleteUrl(String url) {
friend.getUrls().remove(url);
display.setData(friend.getUrls());
}
});
}
public void go(final HasWidgets container) {
container.clear();
container.add(display.asWidget());
}
private void addURL() {
String url = display.getUrl().getValue().trim();
if (url.equals(""))
return;
friend.addUrl(url);
display.setData(friend.getUrls());
}
private void doSave() {
friend.setFirstName(display.getFirstName().getValue().trim());
friend.setLastName(display.getLastName().getValue().trim());
friend.setEmailAddress(display.getEmailAddress().getValue().trim());
new RPCCall<FriendDTO>() {
@Override
protected void callService(AsyncCallback<FriendDTO> cb) {
rpcService.updateFriend(friend, cb);
}
@Override
public void onSuccess(FriendDTO result) {
GWT.log("FriendEditPresenter: Firing FriendUpdateEvent");
eventBus.fireEvent(new FriendUpdatedEvent(result));
}
@Override
public void onFailure(Throwable caught) {
Window.alert("Error retrieving friend...");
}
}.retry(3);
}
}