module.pandabox.presentation.Segment.java Source code

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Here is the source code for module.pandabox.presentation.Segment.java

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/*
 * @(#)Segment.java
 *
 * Copyright 2011 Instituto Superior Tecnico
 * Founding Authors: Pedro Santos
 * 
 *      https://fenix-ashes.ist.utl.pt/
 * 
 *   This file is part of the Pandabox Module.
 *
 *   The Pandabox Module is free software: you can
 *   redistribute it and/or modify it under the terms of the GNU Lesser General
 *   Public License as published by the Free Software Foundation, either version 
 *   3 of the License, or (at your option) any later version.
 *
 *   The Pandabox Module is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *   GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with the Pandabox Module. If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package module.pandabox.presentation;

import java.util.Iterator;

import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Component;
import com.vaadin.ui.HorizontalLayout;

@SuppressWarnings("serial")
/**
 * 
 * @author Pedro Santos
 * 
 */
public class Segment extends HorizontalLayout {

    public Segment() {
        addStyleName("segment");
    }

    public Segment addButton(Button b) {
        addComponent(b);
        b.addListener(new Button.ClickListener() {
            public void buttonClick(ClickEvent event) {
                if (event.getButton().getStyleName().indexOf("down") == -1) {
                    event.getButton().addStyleName("down");
                } else {
                    event.getButton().removeStyleName("down");
                }
            }
        });
        updateButtonStyles();
        return this;
    }

    private void updateButtonStyles() {
        int i = 0;
        Component c = null;
        for (Iterator<Component> iterator = getComponentIterator(); iterator.hasNext();) {
            c = iterator.next();
            c.removeStyleName("first");
            c.removeStyleName("last");
            if (i == 0) {
                c.addStyleName("first");
            }
            i++;
        }
        if (c != null) {
            c.addStyleName("last");
        }
    }
}