I_CmsEventListener


1   /*
2    * File   : $Source: /usr/local/cvs/opencms/src/org/opencms/main/I_CmsEventListener.java,v $
3    * Date   : $Date: 2006/04/28 15:20:52 $
4    * Version: $Revision: 1.30 $
5    *
6    * This library is part of OpenCms -
7    * the Open Source Content Mananagement System
8    *
9    * Copyright (c) 2005 Alkacon Software GmbH (http://www.alkacon.com)
10   *
11   * This library is free software; you can redistribute it and/or
12   * modify it under the terms of the GNU Lesser General Public
13   * License as published by the Free Software Foundation; either
14   * version 2.1 of the License, or (at your option) any later version.
15   *
16   * This library is distributed in the hope that it will be useful,
17   * but WITHOUT ANY WARRANTY; without even the implied warranty of
18   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19   * Lesser General Public License for more details.
20   *
21   * For further information about Alkacon Software GmbH, please see the
22   * company website: http://www.alkacon.com
23   *
24   * For further information about OpenCms, please see the
25   * project website: http://www.opencms.org
26   * 
27   * You should have received a copy of the GNU Lesser General Public
28   * License along with this library; if not, write to the Free Software
29   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
30   */
31  
32  package org.opencms.main;
33  
34  /**
35   * Implement this interface in case your class has to react 
36   * to CmsEvents that are thrown by system.<p>
37   * 
38   * In order to recieve system events, your class must register with 
39   * the OpenCms event mechanism. This can be done in the constructor of a class
40   * like this:
41   * <pre>
42   * org.opencms.main.OpenCms.addCmsEventListener(this);
43   * </pre>
44   * 
45   * A typical implementation might look like this:
46   * <pre>
47   * public void cmsEvent(org.opencms.main.CmsEvent event) {
48   *     switch (event.getType()) {
49   *         case org.opencms.main.I_CmsEventListener.EVENT_PUBLISH_PROJECT:
50   *         case org.opencms.main.I_CmsEventListener.EVENT_CLEAR_CACHES:
51   *             // do something
52   *             break;
53   *         case org.opencms.main.I_CmsEventListener.EVENT_LOGIN_USER:
54   *            // do something else
55   *             break;
56   *         }
57   * }
58   * </pre>
59   * 
60   * @author  Alexander Kandzior 
61   * 
62   * @version $Revision: 1.30 $ 
63   * 
64   * @since 6.0.0 
65   * 
66   * @see CmsEvent
67   * @see org.opencms.main.OpenCms#addCmsEventListener(I_CmsEventListener)
68   * @see org.opencms.main.OpenCms#addCmsEventListener(I_CmsEventListener, int[])
69   */
70  public interface I_CmsEventListener {
71  
72      /** Key name for passing a report in the data map. */
73      String   KEY_REPORT = "report";
74  
75      /** Key name for passing a publish history id in the data map. */
76      String   KEY_PUBLISHID = "publishHistoryId";
77      
78      /** Key name for passing a publish list in the data map. */
79      String   KEY_PUBLISHLIST = "publishList";
80  
81      /** Key name for passing a project id in the data map. */
82      String   KEY_PROJECTID = "projectId";
83  
84      /** Key name for passing a database context in the data map. */
85      String   KEY_DBCONTEXT = "dbContext";
86  
87      /**
88       * Marker for "all events".<p>
89       */
90      Integer   LISTENERS_FOR_ALL_EVENTS = new Integer  (-1);
91  
92      /** 
93       * Event "user has logged in".<p>
94       *
95       * @see org.opencms.file.CmsObject#loginUser(String, String) 
96       */
97      int EVENT_LOGIN_USER = 1;
98  
99      /**
100      * Event "a project was published".<p>
101      * 
102      * Event data:
103      * <ul>
104      * <li><code>{@link #KEY_REPORT}</code>: a <code>{@link org.opencms.report.I_CmsReport}</code> to print output messages to</li>
105      * <li><code>{@link #KEY_PUBLISHID}</code>: the ID of the publish task in the publish history</li>
106      * <li><code>{@link #KEY_PROJECTID}</code>: the ID of the project that has been published</li>
107      * <li><code>{@link #KEY_DBCONTEXT}</code>: the current users database context</li>
108      * </ul>
109      * 
110      * @see org.opencms.file.CmsObject#publishProject()
111      * @see #EVENT_BEFORE_PUBLISH_PROJECT
112      */
113     int EVENT_PUBLISH_PROJECT = 2;
114     
115     /**
116      * Event "a project is to published" (but has not yet been published).<p>
117      * 
118      * Event data:
119      * <ul>
120      * <li><code>{@link #KEY_REPORT}</code>: a <code>{@link org.opencms.report.I_CmsReport}</code> to print output messages to</li>
121      * <li><code>{@link #KEY_PUBLISHLIST}</code>: a <code>{@link org.opencms.db.CmsPublishList}</code> that contains the resources that are to be published</li>
122      * <li><code>{@link #KEY_PROJECTID}</code>: the ID of the project that is to be published</li>
123      * <li><code>{@link #KEY_DBCONTEXT}</code>: the current users database context</li>
124      * </ul>
125      * 
126      * @see org.opencms.file.CmsObject#publishProject()
127      * @see #EVENT_PUBLISH_PROJECT
128      */
129     int EVENT_BEFORE_PUBLISH_PROJECT = 3;
130 
131     /** 
132      * Event "all caches must be cleared".<p>
133      *
134      * Not thrown by the core classes, but might be used in modules.
135      */
136     int EVENT_CLEAR_CACHES = 5;
137 
138     /** 
139      * Event "all caches related to user and groups must be cleared".<p>
140      *
141      * Not thrown by the core classes, but might be used in modules.
142      */
143     int EVENT_CLEAR_PRINCIPAL_CACHES = 6;
144 
145     /** 
146      * Event "delete all JSP pages in the "real" file system 
147      * (so they will be rebuild next time the JSP is requested)".<p>
148      * 
149      * This is thrown on the "FlexCache Administration" page if you press
150      * the button "Purge JSP repository", or if you use the <code>_flex=purge</code>
151      * request parameter.
152      */
153     int EVENT_FLEX_PURGE_JSP_REPOSITORY = 8;
154 
155     /** 
156      * Event "the FlexCache must be cleared".<p>
157      * 
158      * This is thrown on the "FlexCache Administration" page if you press
159      * one ot the "Clear cache" buttons, or if you use the <code>_flex=clearcache</code>
160      * request parameter.
161      */
162     int EVENT_FLEX_CACHE_CLEAR = 9;
163 
164     /** 
165      * Event "a single resource has been modified".<p>
166      * 
167      * Event data:
168      * <ul>
169      * <li>key "resource" (mandatory): the modified CmsResource</li>
170      * </ul>
171      */
172     int EVENT_RESOURCE_MODIFIED = 11;
173 
174     /** 
175      * Event "a bunch of resources has been modified".<p>
176      * 
177      * Event data:
178      * <ul>
179      * <li>key "resources" (mandatory): a List of modified CmsResources</li>
180      * </ul>
181      */
182     int EVENT_RESOURCES_MODIFIED = 12;
183 
184     /** 
185      * Event "the list of sub-resources of a folder has been modified", (e.g. a new resource has been created).<p>
186      * 
187      * Event data:
188      * <ul>
189      * <li>key "resource" (mandatory): the modified CmsResource (a folder)</li>
190      * </ul>
191      */
192     int EVENT_RESOURCE_LIST_MODIFIED = 13;
193 
194     /** 
195      * Event "a single property (and so the resource itself, too) have been modified".<p>
196      * 
197      * Event data:
198      * <ul>
199      * <li>key "resource" (mandatory): the CmsResource that has the modified property attached</li>
200      * <li>key "property" (mandatory): the modified property</li>
201      * </ul>
202      */
203     int EVENT_PROPERTY_MODIFIED = 14;
204 
205     /** 
206      * Event "all properties (and so the resource itself, too) have been modified".<p>
207      * 
208      * Event data:
209      * <ul>
210      * <li>key "resource" (mandatory): the CmsResource that has the modified properties attached</li>
211      * </ul>
212      */
213     int EVENT_RESOURCE_AND_PROPERTIES_MODIFIED = 15;
214 
215     /** 
216      * Event "clear all offline caches".<p>
217      * 
218      * Event data: none
219      */
220     int EVENT_CLEAR_OFFLINE_CACHES = 16;
221 
222     /** 
223      * Event "clear all online caches".<p>
224      * 
225      * Event data: none
226      */
227     int EVENT_CLEAR_ONLINE_CACHES = 17;
228 
229     /**
230      * Event "a project was modified" (e.g. a project has been deleted, 
231      * or the project resources have been changed).<p>
232      * 
233      * Event data:
234      * <ul>
235      * <li>key "project" (mandatory): the deleted CmsProject</li>
236      * </ul>
237      */
238     int EVENT_PROJECT_MODIFIED = 18;
239 
240     /**
241      * Event "update exported resources".<p>
242      * 
243      * This event updates all export points, deletes the content
244      * of the "export" folder, purges the JSP repository, and clears
245      * all caches.<p>
246      * 
247      * This event is for internal use.<p>
248      */
249     int EVENT_UPDATE_EXPORTS = 19;
250 
251     /**
252      * @see #EVENT_RESOURCE_AND_PROPERTIES_MODIFIED
253      */
254     int EVENT_RESOURCE_CREATED = 23;
255 
256     /**
257      * @see #EVENT_RESOURCES_MODIFIED
258      */
259     int EVENT_RESOURCE_COPIED = 24;
260 
261     /**
262      * @see #EVENT_RESOURCES_MODIFIED
263      */
264     int EVENT_RESOURCE_DELETED = 25;
265 
266     /**
267      * Event "a property definition has been modified".<p>
268      * 
269      * Event data:
270      * <ul>
271      * <li>key "propertyDefinition" (mandatory): the modified property definition</li>
272      * </ul>
273      */
274     int EVENT_PROPERTY_DEFINITION_MODIFIED = 26;
275 
276     /** 
277      * Event "a list of resources and their properties have been modified".<p>
278      * 
279      * Event data:
280      * <ul>
281      * <li>key "resources" (mandatory): a List of modified CmsResources</li>
282      * </ul>
283      */
284     int EVENT_RESOURCES_AND_PROPERTIES_MODIFIED = 27;
285 
286     /**
287      * Event "a property definition has been created".<p>
288      * 
289      * Event data:
290      * <ul>
291      * <li>key "propertyDefinition" (mandatory): the modified property definition</li>
292      * </ul>
293      */
294     int EVENT_PROPERTY_DEFINITION_CREATED = 28;
295 
296     /**
297      * Acknowledge the occurrence of the specified event, implement this 
298      * method to check for CmsEvents in your class.
299      *
300      * @param event CmsEvent that has occurred
301      */
302     void cmsEvent(CmsEvent event);
303 }
304
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