/**
* Copyright 2010 Google Inc.
*
* 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.
*/
package com.google.livingstories.client.contentmanager;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.MultiWordSuggestOracle;
import com.google.gwt.user.client.ui.SuggestBox;
import com.google.gwt.user.client.ui.TextBoxBase;
import com.google.livingstories.client.BaseContentItem;
import com.google.livingstories.client.ContentRpcServiceAsync;
import com.google.livingstories.client.PlayerContentItem;
import java.util.HashMap;
import java.util.Map;
/**
* A text-box that suggests existing unassigned player names and lets you select one of them
* or add a new one.
*/
public class PlayerSuggestAndAddPanel extends Composite {
private Map<String, PlayerContentItem> nameToPlayerMap;
private MultiWordSuggestOracle oracle;
private SuggestBox suggestBox;
private Button addOrCreateButton;
private TextBoxBase textBox;
private Label problemLabel;
private HorizontalPanel panel;
public PlayerSuggestAndAddPanel(ContentRpcServiceAsync contentService, boolean isContributor,
AsyncCallback<BaseContentItem> callbackWork) {
this.nameToPlayerMap = new HashMap<String, PlayerContentItem>();
this.oracle = new MultiWordSuggestOracle();
this.suggestBox = new SuggestBox(oracle);
this.addOrCreateButton = new Button("Create or Add");
this.textBox = suggestBox.getTextBox();
this.problemLabel = new Label();
problemLabel = new Label("Selection did not succeed. Please try again.");
problemLabel.setStylePrimaryName("serverResponseLabelError");
problemLabel.setVisible(false);
addClickHandlerForButton(contentService, isContributor, callbackWork);
addEnterKeyHandlerForSuggestBox(callbackWork);
this.panel = new HorizontalPanel();
this.panel.add(suggestBox);
this.panel.add(addOrCreateButton);
this.panel.add(problemLabel);
initWidget(panel);
}
/**
* If the user clicks on the button, either they selected an existing player which will be
* returned to the caller. Or they entered a new name, in which case, they will be presented
* with a popup to enter the information for the new player.
*/
private void addClickHandlerForButton(ContentRpcServiceAsync contentService,
boolean isContributor, final AsyncCallback<BaseContentItem> callbackWork) {
final OnTheFlyPlayerBox onTheFlyPlayerBox = new OnTheFlyPlayerBox(contentService, isContributor,
new AsyncCallback<BaseContentItem>() {
@Override
public void onFailure(Throwable caught) {
problemLabel.setVisible(true);
}
@Override
public void onSuccess(BaseContentItem result) {
problemLabel.setVisible(false);
addPlayer((PlayerContentItem) result);
callbackWork.onSuccess(result);
clear();
}
});
addOrCreateButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
String playerName = textBox.getText();
PlayerContentItem selectedPlayer = nameToPlayerMap.get(playerName);
if (selectedPlayer == null) {
onTheFlyPlayerBox.open(playerName, addOrCreateButton);
} else {
callbackWork.onSuccess(selectedPlayer);
clear();
}
}
});
}
/**
* Pressing 'enter' after selecting an item from the suggest list or after entering a new name
* in the text box acts the same as clicking on the button.
*/
private void addEnterKeyHandlerForSuggestBox(final AsyncCallback<BaseContentItem> callbackWork) {
textBox.addKeyUpHandler(new KeyUpHandler() {
@Override
public void onKeyUp(KeyUpEvent event) {
if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER) {
addOrCreateButton.click();
}
}
});
}
public void addPlayer(PlayerContentItem player) {
nameToPlayerMap.put(player.getName(), player);
oracle.add(player.getName());
}
public void removePlayer(String playerName) {
if (nameToPlayerMap.containsKey(playerName)) {
nameToPlayerMap.remove(playerName);
// MultiWordSuggestOracle doesn't have the ability to remove suggestions one at a time. Boo!
oracle.clear();
oracle.addAll(nameToPlayerMap.keySet());
}
}
public void clear() {
textBox.setText("");
}
}