content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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 org.apache.causeway.viewer.wicket.model.models;
  
  import org.apache.wicket.Component;
  import org.apache.wicket.Page;
  import org.apache.wicket.ajax.AjaxRequestTarget;
  
  import org.apache.causeway.applib.annotation.PromptStyle;
  import org.apache.causeway.applib.services.metamodel.BeanSort;
  
  public interface ActionPromptProvider {
  
      public static ActionPromptProvider getFrom(final Component component) {
          final Page page = component.getPage();
          if(page == null) {
              throw new IllegalArgumentException("Programming error: component must be added to a page "
                      + "in order to locate the ActionPromptProvider");
          }
          return getFrom(page);
      }
  
      public static ActionPromptProvider getFrom(final Page page) {
          if(page instanceof ActionPromptProvider) {
              return (ActionPromptProvider) page;
          }
          // else
          throw new IllegalArgumentException("Programming error: all pages should inherit from PageAbstract, "
                  + "which serves as the ActionPromptProvider");
      }
  
      public ActionPrompt getActionPrompt(
              final PromptStyle promptStyle,
              final BeanSort sort);
  
      void closePrompt(final AjaxRequestTarget target);
  }
  