package org.jrest4guice.rest.writer.renderer;
import java.io.OutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.commontemplate.core.Context;
import org.commontemplate.core.Template;
import org.commontemplate.engine.Engine;
import org.jrest4guice.rest.ServiceResult;
import org.jrest4guice.rest.annotations.PageFlow;
import org.jrest4guice.rest.writer.HtmlResponseWriter;
import org.jrest4guice.security.SecurityContext;
import org.jrest4guice.security.UserRole;
import com.google.inject.Inject;
/**
* CTL（commontemplate）的渲染器
* @author <a href="mailto:zhangyouqun@gmail.com">cnoss (QQ:86895156)</a>
*/
public class CTLViewRender implements ViewRender {
@Inject(optional=true)
private HttpServletRequest request;
@Inject(optional=true)
private Engine engine;
@Inject(optional=true)
private Context context;
@Inject(optional=true)
private SecurityContext securityContext;
/* (non-Javadoc)
* @see org.jrest4guice.rest.render.ViewRender#render(java.io.OutputStream, org.jrest4guice.rest.annotations.PageFlow, org.jrest4guice.rest.ServiceResult)
*/
@Override
public void render(OutputStream out, PageFlow annotation, ServiceResult result,String charset)
throws Exception {
try {
String url = annotation.success().value();
Boolean inChain = result.isInChain();
if((inChain==null || !inChain) &&(result.getErrorType() != null || result.getInvalidValues() != null)){
url = annotation.error().value();
}
HttpSession session = this.request.getSession();
url = session.getServletContext().getRealPath("/")+url;
//获取模板
Template template = this.engine.getTemplate(url);
//往上下文中填入数据
this.context.put("ctxPath", this.request.getContextPath());
UserRole userPrincipal = this.securityContext.getUserPrincipal();
this.context.put(SecurityContext.CURRENT_USER_ROlE, userPrincipal);
this.context.put(SecurityContext.USER_IS_LOGIN, userPrincipal!=null);
this.context.put("ctx", result);
this.context.put("xctx",session.getAttribute(HtmlResponseWriter.OPTION_KEY));
template.render(this.context);
String content = this.context.getOut().toString();
//输出到页面
out.write(content.getBytes("utf-8"));
}finally{
this.context.clear();
}
}
/* (non-Javadoc)
* @see org.jrest4guice.rest.render.ViewRender#getRenderType()
*/
@Override
public String getRenderType() {
return ResultType.CTL;
}
@Override
public String getRenderTypeShortName() {
return ".ctl";
}
}