ButtonGroupComponentRenderer.java

/**
 * <a href="http://www.openolat.org">
 * OpenOLAT - Online Learning and Training</a><br>
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License"); <br>
 * you may not use this file except in compliance with the License.<br>
 * You may obtain a copy of the License at the
 * <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
 * <p>
 * Unless required by applicable law or agreed to in writing,<br>
 * software distributed under the License is distributed on an "AS IS" BASIS, <br>
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
 * See the License for the specific language governing permissions and <br>
 * limitations under the License.
 * <p>
 * Initial code contributed and copyrighted by<br>
 * frentix GmbH, http://www.frentix.com
 * <p>
 */
package org.olat.core.gui.components.stack;

import java.util.List;

import org.olat.core.gui.components.Component;
import org.olat.core.gui.components.DefaultComponentRenderer;
import org.olat.core.gui.components.link.Link;
import org.olat.core.gui.render.RenderResult;
import org.olat.core.gui.render.Renderer;
import org.olat.core.gui.render.StringOutput;
import org.olat.core.gui.render.URLBuilder;
import org.olat.core.gui.translator.Translator;
import org.olat.core.util.StringHelper;

/**
 * 
 * Initial date: 07.06.2016<br>
 * @author srosse, stephane.rosse@frentix.com, http://www.frentix.com
 *
 */
public class ButtonGroupComponentRenderer extends DefaultComponentRenderer {

	@Override
	public void render(Renderer renderer, StringOutput sb, Component source, URLBuilder ubu, Translator translator,
			RenderResult renderResult, String[] args) {
		
		ButtonGroupComponent cmp = (ButtonGroupComponent)source;
		sb.append("<div id='o_c").append(cmp.getDispatchID()).append("' class='btn-group btn-group-sm");
		if(StringHelper.containsNonWhitespace(cmp.getElementCssClass())) {
			sb.append(" ").append(cmp.getElementCssClass());
		}
		sb.append("'>");
		List<Link> buttons = cmp.getButtons();
		for(Link button:buttons) {
			if(cmp.getSelectedButton() == button) {
				button.setCustomEnabledLinkCSS("btn btn-primary");
			} else {
				button.setCustomEnabledLinkCSS("btn btn-default");
			}
			renderer.render(button, sb, args);
		}
		sb.append("</div>");
	}
}