WebviewRenderer.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.classic.internal.render;

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

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

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

    /**
     * {@inheritDoc}
     */
    @Override
    public EList<Widget> renderWidget(Widget w, StringBuilder sb) throws RenderException {
        Webview webview = (Webview) w;
        String snippet = getSnippet("webview");

        int height = webview.getHeight();
        if (height == 0) {
            height = 1;
        }

        snippet = StringUtils.replace(snippet, "%url%", webview.getUrl());
        snippet = StringUtils.replace(snippet, "%height%", Integer.toString(height * 36));

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