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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one
    3    * or more contributor license agreements.  See the NOTICE file
    4    * distributed with this work for additional information
    5    * regarding copyright ownership.  The ASF licenses this file
    6    * to you under the Apache License, Version 2.0 (the
    7    * "License"); you may not use this file except in compliance
    8    * with the License.  You may obtain a copy of the License at
    9    *
    10   *   http://www.apache.org/licenses/LICENSE-2.0
    11   *
    12   * Unless required by applicable law or agreed to in writing,
    13   * software distributed under the License is distributed on an
    14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    15   * KIND, either express or implied.  See the License for the
    16   * specific language governing permissions and limitations
    17   * under the License.
    18   */
    19  package org.apache.myfaces.shared_orchestra.el;
    20
    21  import javax.faces.component.StateHolder;
    22  import javax.faces.context.FacesContext;
    23  import javax.faces.el.EvaluationException;
    24  import javax.faces.el.MethodBinding;
    25  import javax.faces.el.MethodNotFoundException;
    26
    27  /**
    28   * Convenient method binding that does nothing other than returning a fixed outcome String when invoked.
    29   *
    30   * @author Manfred Geiler
    31   */
    32  public class SimpleActionMethodBinding
    33          extends MethodBinding
    34          implements StateHolder
    35  {
    36      private String _outcome;
    37
    38      public SimpleActionMethodBinding(String outcome)
    39      {
    40          _outcome = outcome;
    41      }
    42
    43      public Object invoke(FacesContext facescontext, Object aobj[]) throws EvaluationException, MethodNotFoundException
    44      {
    45          return _outcome;
    46      }
    47
    48      public Class getType(FacesContext facescontext) throws MethodNotFoundException
    49      {
    50          return String.class;
    51      }
    52
    53
    54      //~ StateHolder support ----------------------------------------------------------------------------
    55
    56      private boolean _transient = false;
    57
    58      /**
    59       * Empty constructor, so that new instances can be created when restoring state.
    60       */
    61      public SimpleActionMethodBinding()
    62      {
    63          _outcome = null;
    64      }
    65
    66      public Object saveState(FacesContext facescontext)
    67      {
    68          return _outcome;
    69      }
    70
    71      public void restoreState(FacesContext facescontext, Object obj)
    72      {
    73          _outcome = (String)obj;
    74      }
    75
    76      public boolean isTransient()
    77      {
    78          return _transient;
    79      }
    80
    81      public void setTransient(boolean flag)
    82      {
    83          _transient = flag;
    84      }
    85
    86      public String toString()
    87      {
    88          return _outcome;
    89      }
    90  }