/*
* Copyright 2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.springsource.greenhouse.home;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import com.springsource.greenhouse.utils.Location;
/**
* Resolves the user's geo location from client-submitted query parameters, if present in the request.
* @author Keith Donald
*/
public class UserLocationHandlerInterceptor implements HandlerInterceptor {
public static final String USER_LOCATION_ATTRIBUTE = "userLocation";
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
Double latitude = ServletRequestUtils.getDoubleParameter(request, "latitude");
Double longitude = ServletRequestUtils.getDoubleParameter(request, "longitude");
if (latitude != null && longitude != null) {
request.setAttribute(USER_LOCATION_ATTRIBUTE, new Location(latitude, longitude));
}
return true;
}
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
}
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
}