/**
* Copyright (c) 2010-2014, openHAB.org and others.
*
* 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.openhab.ui.webapp.internal.render;
import java.util.Date;
import org.apache.commons.lang.StringUtils;
import org.eclipse.emf.common.util.EList;
import org.openhab.model.sitemap.Image;
import org.openhab.model.sitemap.Widget;
import org.openhab.ui.webapp.render.RenderException;
import org.openhab.ui.webapp.render.WidgetRenderer;
/**
* This is an implementation of the {@link WidgetRenderer} interface, which
* can produce HTML code for Image widgets.
*
* @author Kai Kreuzer
* @since 0.6.0
*
*/
public class ImageRenderer extends AbstractWidgetRenderer {
/**
* {@inheritDoc}
*/
public boolean canRender(Widget w) {
return w instanceof Image;
}
/**
* {@inheritDoc}
*/
public EList<Widget> renderWidget(Widget w, StringBuilder sb) throws RenderException {
Image image = (Image) w;
String snippet = (image.getChildren().size() > 0) ?
getSnippet("image_link") : getSnippet("image");
if(image.getRefresh()>0) {
snippet = StringUtils.replace(snippet, "%setrefresh%", "<script type=\"text/javascript\">imagesToRefreshOnPage=1</script>");
snippet = StringUtils.replace(snippet, "%refresh%", "id=\"%id%\" onload=\"setTimeout('reloadImage(\\'%url%\\', \\'%id%\\')', " + image.getRefresh() + ")\"");
} else {
snippet = StringUtils.replace(snippet, "%setrefresh%", "");
snippet = StringUtils.replace(snippet, "%refresh%", "");
}
String widgetId = itemUIRegistry.getWidgetId(w);
snippet = StringUtils.replace(snippet, "%id%", widgetId);
String sitemap = w.eResource().getURI().path();
String url = "proxy?sitemap=" + sitemap + "&widgetId=" + widgetId + "&t=" + (new Date()).getTime();
snippet = StringUtils.replace(snippet, "%url%", url);
sb.append(snippet);
return null;
}
}