package com.jeecms.cms.action.directive;
import static com.jeecms.common.web.freemarker.DirectiveUtils.OUT_BEAN;
import static freemarker.template.ObjectWrapper.DEFAULT_WRAPPER;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import com.jeecms.cms.entity.main.CmsSite;
import com.jeecms.cms.entity.main.Content;
import com.jeecms.cms.manager.main.ContentMng;
import com.jeecms.cms.web.FrontUtils;
import com.jeecms.common.web.freemarker.DirectiveUtils;
import com.jeecms.common.web.freemarker.ParamsRequiredException;
import freemarker.core.Environment;
import freemarker.template.TemplateDirectiveBody;
import freemarker.template.TemplateDirectiveModel;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;
/**
* 内容对象标签
*
* @author liufang
*
*/
public class ContentDirective implements TemplateDirectiveModel {
/**
* 输入参数，栏目ID。
*/
public static final String PARAM_ID = "id";
/**
* 输入参数，下一篇。
*/
public static final String PRAMA_NEXT = "next";
/**
* 输入参数，栏目ID。
*/
public static final String PARAM_CHANNEL_ID = "channelId";
@SuppressWarnings("unchecked")
public void execute(Environment env, Map params, TemplateModel[] loopVars,
TemplateDirectiveBody body) throws TemplateException, IOException {
Integer id = getId(params);
Boolean next = DirectiveUtils.getBool(PRAMA_NEXT, params);
Content content;
if (next == null) {
content = contentMng.findById(id);
} else {
CmsSite site = FrontUtils.getSite(env);
Integer channelId = DirectiveUtils.getInt(PARAM_CHANNEL_ID, params);
content = contentMng.getSide(id, site.getId(), channelId, next);
}
Map<String, TemplateModel> paramWrap = new HashMap<String, TemplateModel>(
params);
paramWrap.put(OUT_BEAN, DEFAULT_WRAPPER.wrap(content));
Map<String, TemplateModel> origMap = DirectiveUtils
.addParamsToVariable(env, paramWrap);
body.render(env.getOut());
DirectiveUtils.removeParamsFromVariable(env, paramWrap, origMap);
}
private Integer getId(Map<String, TemplateModel> params)
throws TemplateException {
Integer id = DirectiveUtils.getInt(PARAM_ID, params);
if (id != null) {
return id;
} else {
throw new ParamsRequiredException(PARAM_ID);
}
}
@Autowired
private ContentMng contentMng;
}