ListRenderer.java

/**
 * Copyright (c) 2014-2017 by the respective copyright holders.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.eclipse.smarthome.ui.basic.internal.render;

import org.apache.commons.lang.StringUtils;
import org.eclipse.emf.common.util.EList;
import org.eclipse.smarthome.model.sitemap.List;
import org.eclipse.smarthome.model.sitemap.Widget;
import org.eclipse.smarthome.ui.basic.render.RenderException;
import org.eclipse.smarthome.ui.basic.render.WidgetRenderer;

/**
 * This is an implementation of the {@link WidgetRenderer} interface, which
 * can produce HTML code for List widgets.
 *
 * @author Kai Kreuzer - Initial contribution and API
 * @author Vlad Ivanov - BasicUI changes
 *
 */
public class ListRenderer extends AbstractWidgetRenderer {

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean canRender(Widget w) {
        return w instanceof List;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public EList<Widget> renderWidget(Widget w, StringBuilder sb) throws RenderException {
        String snippet = getSnippet("list");
        snippet = snippet.replaceAll("%label%", getLabel(w));

        String rowSnippet = getSnippet("list_row");
        String state = itemUIRegistry.getState(w).toString();
        String[] rowContents = state.split(((List) w).getSeparator());
        StringBuilder rowSB = new StringBuilder();
        for (String row : rowContents) {
            rowSB.append(StringUtils.replace(rowSnippet, "%title%", escapeHtml(row)));
        }
        snippet = StringUtils.replace(snippet, "%rows%", rowSB.toString());

        // Process the color tags
        snippet = processColor(w, snippet);

        sb.append(snippet);
        return null;
    }
}