package cn.org.rapid_framework.freemarker.directive;
import java.io.IOException;
import java.util.Map;
import cn.org.rapid_framework.freemarker.directive.OverrideDirective.TemplateDirectiveBodyOverrideWraper;
import freemarker.core.Environment;
import freemarker.template.TemplateDirectiveBody;
import freemarker.template.TemplateDirectiveModel;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;
/**
* @author badqiu
*/
public class BlockDirective implements TemplateDirectiveModel{
public final static String DIRECTIVE_NAME = "block";
public void execute(Environment env,
Map params, TemplateModel[] loopVars,
TemplateDirectiveBody body) throws TemplateException, IOException {
String name = DirectiveUtils.getRequiredParam(params, "name");
TemplateDirectiveBodyOverrideWraper overrideBody = DirectiveUtils.getOverrideBody(env, name);
if(overrideBody == null) {
if(body != null) {
body.render(env.getOut());
}
}else {
DirectiveUtils.setTopBodyForParentBody(env, new TemplateDirectiveBodyOverrideWraper(body,env), overrideBody);
overrideBody.render(env.getOut());
}
}
}