content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.ui.apps.util;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.util.Map;
  
  import com.google.common.collect.Maps;
  import com.vaadin.ui.Component;
  
  public class CmsReflectionAppAttributeProvider {
  
      public static Map<String, Object> getComponentAttributes(Component component) {
  
          Class<?> cls = component.getClass();
          Map<String, Object> result = Maps.newHashMap();
          for (Method method : cls.getDeclaredMethods()) {
              ProvidesAppAttribute annotation = method.getAnnotation(ProvidesAppAttribute.class);
              if (annotation != null) {
                  Object val = null;
                  try {
                      val = method.invoke(component);
                      result.put(annotation.name(), val);
                  } catch (InvocationTargetException e) {
                      Throwable cause = e.getCause();
                      if (cause instanceof Exception) {
                          throw new RuntimeException(cause);
                      } else if (cause instanceof RuntimeException) {
                          throw (RuntimeException)cause;
                      } else if (cause instanceof Error) {
                          throw (Error)cause;
                      }
                  } catch (Exception e) {
                      throw new RuntimeException(e);
                  }
              }
          }
          return result;
  
      }
  
  }
  