/*
* This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
*
* Copyright 2008-2011 Geosparc nv, http://www.geosparc.com/, Belgium.
*
* The program is available in open source according to the GNU Affero
* General Public License. All contributions in this program are covered
* by the Geomajas Contributors License Agreement. For full licensing
* details, see LICENSE.txt in the project root.
*/
package org.geomajas.widget.utility.smartgwt.client.widget;
import java.util.HashMap;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.layout.VLayout;
import org.geomajas.annotation.Api;
/**
* Layout behaving like a deck of cards. Only one card visible at a time.
*
* @param <KEY_TYPE> type for the card key
*
* @author Jan De Moerloose
* @since 1.0.0
*/
@Api
public class CardLayout<KEY_TYPE> extends VLayout {
private HashMap<KEY_TYPE, Canvas> cards = new HashMap<KEY_TYPE, Canvas>();
private Canvas currentCard;
/**
* Add a card to the deck and associate it with the specified key.
*
* @param key key associated to the card
* @param card the card
* @since 1.0.0
*/
@Api
public void addCard(KEY_TYPE key, Canvas card) {
if (currentCard != null) {
currentCard.hide();
}
addMember(card);
currentCard = card;
cards.put(key, card);
}
/**
* Show the card associated with the specified key.
*
* @param key key associated to the card that should be shown
* @since 1.0.0
*/
@Api
public void showCard(KEY_TYPE key) {
Canvas newCurrent = cards.get(key);
if (null != newCurrent) {
if (newCurrent != currentCard && null != currentCard) {
currentCard.hide();
}
currentCard = newCurrent;
currentCard.show();
}
}
/**
* Returns the current card.
*
* @return the current card.
* @since 1.0.0
*/
@Api
public Canvas getCurrentCard() {
return currentCard;
}
}