package org.focusns.web.widget.interceptor;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.focusns.common.web.page.config.PageConfig;
import org.focusns.web.widget.constraint.AnnotationConstraint;
import org.focusns.web.widget.constraint.PageAnnotationConstraint;
import org.focusns.web.widget.constraint.ProjectUserAnnotationConstraint;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.context.request.ServletWebRequest;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import org.springframework.web.util.WebUtils;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.List;
public class AnnotationConstraintWidgetInterceptor extends HandlerInterceptorAdapter {
private static final Log log = LogFactory.getLog(AnnotationConstraintWidgetInterceptor.class);
//
private List<AnnotationConstraint> annotationConstraints = new ArrayList<AnnotationConstraint>();
public AnnotationConstraintWidgetInterceptor() {
this.annotationConstraints.add(new ProjectUserAnnotationConstraint());
this.annotationConstraints.add(new PageAnnotationConstraint());
}
public void setAnnotationConstraints(List<AnnotationConstraint> annotationConstraints) {
this.annotationConstraints.addAll(annotationConstraints);
}
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//
NativeWebRequest webRequest = new ServletWebRequest(request);
//
if (WebUtils.isIncludeRequest(request)) {
PageConfig pageConfig = (PageConfig) request.getAttribute("pageConfig");
if (pageConfig!=null) {
//
for(AnnotationConstraint annotationConstraint : annotationConstraints) {
if(annotationConstraint.support(handler)) {
if(annotationConstraint.canHandle(webRequest, handler)==false) {
if(log.isDebugEnabled()) {
log.debug(String.format("Widget Handler [%s] 受到约束，将被忽略...", handler));
}
return false;
}
}
}
}
}
//
return true;
}
}