ViewProvider.java

/*
 * The MIT License
 *
 * Copyright 2015 nikku.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package support.web;

import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.SecurityContext;
import kickr.db.entity.user.User;
import support.web.view.AbstractView;

/**
 *
 * @author nikku
 */
public class ViewProvider {

  @Context
  private SecurityContext securityContext;

  @Context
  private HttpServletRequest request;

  protected <T extends AbstractView> T createView(Class<T> cls) {
    boolean layout = request.getHeader("X-PJAX") == null;

    try {
      T view = (T) cls.newInstance();

      return (T) view.useLayout(layout).withUser((User) securityContext.getUserPrincipal());
    } catch (InstantiationException | IllegalAccessException e) {
      throw new IllegalArgumentException("Failed to instantiate view", e);
    }
  }
}