Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||
DialogListener |
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| 1.0;1 |
1 | /* |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to you under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | ||
18 | package org.apache.shale.dialog; |
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19 | ||
20 | ||
21 | /** |
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22 | * <p>JavaBeans listener for a single instance of a Shale dialog.</p> |
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23 | * |
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24 | * <p><strong>IMPLEMENTATION NOTE</strong> - Implementations of this interface |
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25 | * will be stored in session scope, so they should be serializable.</p> |
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26 | * |
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27 | * @since 1.0.4 |
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28 | */ |
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29 | public interface DialogListener { |
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30 | ||
31 | ||
32 | //----------------------------------------------- Coarse grained callbacks |
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33 | ||
34 | /** |
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35 | * <p>Handle the starting of the dialog instance.</p> |
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36 | */ |
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37 | public void onStart(); |
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38 | ||
39 | ||
40 | /** |
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41 | * <p>Handle the stopping of the dialog instance.</p> |
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42 | */ |
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43 | public void onStop(); |
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44 | ||
45 | ||
46 | /** |
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47 | * <p>Handle an unexpected failure during the execution of this dialg |
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48 | * instance.</p> |
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49 | * |
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50 | * @param exception A potentially implementation specific exception |
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51 | * during the execution of this dialog instance |
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52 | */ |
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53 | public void onException(Exception exception); |
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54 | ||
55 | ||
56 | //------------------------------------------------- Fine grained callbacks |
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57 | ||
58 | /** |
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59 | * <p>Handle an entry into a dialog state.</p> |
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60 | * |
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61 | * @param stateId Implementation specific identifier of the state |
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62 | * that has been entered |
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63 | */ |
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64 | public void onEntry(String stateId); |
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65 | ||
66 | ||
67 | /** |
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68 | * <p>Handle an exit from a dialog state.</p> |
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69 | * |
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70 | * @param stateId Implementation specific identifier of the state |
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71 | * that has been exited |
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72 | */ |
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73 | public void onExit(String stateId); |
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74 | ||
75 | ||
76 | /** |
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77 | * <p>Handle a transition being followed.</p> |
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78 | * |
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79 | * @param fromStateId Implementation specific identifier of the source |
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80 | * state for the transition that has been followed |
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81 | * @param toStateId Implementation specific identifier of the target |
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82 | * state for the transition that has been followed |
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83 | */ |
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84 | public void onTransition(String fromStateId, String toStateId); |
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85 | ||
86 | ||
87 | //-------------------------------------------------------------- Ownership |
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88 | ||
89 | /** |
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90 | * <p>Return the {@link DialogContext} instance associated with this |
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91 | * {@link DialogListener}.</p> |
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92 | * |
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93 | * @return The {@link DialogContext} whose execution we are listening to |
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94 | */ |
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95 | public DialogContext getDialogContext(); |
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96 | ||
97 | ||
98 | /** |
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99 | * <p>Set the {@link DialogContext} instance associated with this |
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100 | * {@link DialogListener}.</p> |
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101 | * |
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102 | * @param dialogContext The {@link DialogContext} whose execution we |
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103 | * will track |
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104 | */ |
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105 | public void setDialogContext(DialogContext dialogContext); |
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106 | ||
107 | ||
108 | } |