package org.g4studio.core.web.taglib.html;
import java.io.IOException;
import java.io.StringWriter;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.g4studio.core.metatype.Dto;
import org.g4studio.core.metatype.impl.BaseDto;
import org.g4studio.core.tplengine.DefaultTemplate;
import org.g4studio.core.tplengine.StringTemplate;
import org.g4studio.core.tplengine.TemplateEngine;
import org.g4studio.core.tplengine.TemplateEngineFactory;
import org.g4studio.core.tplengine.TemplateType;
import org.g4studio.core.util.G4Constants;
import org.g4studio.core.web.taglib.util.TagHelper;
/**
* Div标签
* @author XiongChun
* @since 2010-01-30
*/
public class DivTag extends TagSupport{
private static Log log = LogFactory.getLog(DivTag.class);
private String key;
private String cls;
private String style;
private String any;
/**
* 标签开始
*/
public int doStartTag() throws JspException{
Dto dto = new BaseDto();
dto.put("key", key);
dto.put("any", TagHelper.checkEmpty(any));
dto.put("style", TagHelper.checkEmpty(style));
dto.put("cls", TagHelper.checkEmpty(cls));
String tpl = "<div id=*$key* #if(${cls}!=*off*)class=*${cls}*#end #if(${style}!=*off*)style=*${style}*#end #if(${any}!=*off*)${any}#end>";
TemplateEngine engine = TemplateEngineFactory.getTemplateEngine(TemplateType.VELOCITY);
DefaultTemplate template = new StringTemplate(TagHelper.replaceStringTemplate(tpl));
StringWriter writer = engine.mergeTemplate(template, dto);
try {
pageContext.getOut().write(writer.toString());
} catch (IOException e) {
log.error(G4Constants.Exception_Head + e.getMessage());
e.printStackTrace();
}
return super.EVAL_BODY_INCLUDE;
}
/**
* 标签结束
*/
public int doEndTag() throws JspException{
try {
pageContext.getOut().write("</div>");
} catch (IOException e) {
log.error(G4Constants.Exception_Head + e.getMessage());
e.printStackTrace();
}
return super.EVAL_PAGE;
}
/**
* 释放资源
*/
public void release(){
key = null;
cls = null;
style = null;
any = null;
super.release();
}
public void setCls(String cls) {
this.cls = cls;
}
public void setStyle(String style) {
this.style = style;
}
public void setAny(String any) {
this.any = any;
}
public void setKey(String key) {
this.key = key;
}
}