Kawai Tags

You can easily code new tags to be used with Kawai by implementing the KCode interface. Then all you have to do is register your new tag in the WEB-INF/conf/default/appManager.properties file:

# kCodes Tags
kcodes = Code, ContextPath, PageLink, Image, Download

Below is the source code of the Image tag to give you an idea:

package org.kawai.tag.kcode;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;

public class Image implements KCode {
	
	@Override
	public String getTag() {
		return "img";
	}
	
	@Override
	public boolean hasBody() {
		return false;
	}
	
	@Override
	public String process(PageContext pageContext, Map<String, String> attributes, String body) throws JspException {
		if (body != null) throw new JspException("contextPath tag cannot have a body!");
		
		String filename = attributes.get("file");
		
		if (filename == null) throw new JspException("file attribute is mandatory!");
		
		HttpServletRequest req = (HttpServletRequest) pageContext.getRequest();
		String cp = req.getContextPath();
		
		return "<img src=\"" + cp + "/uploads/images/" + filename + "\" border=\"0\" />";
	}
}