1 /*
2 * Copyright (c) 2002-2014, Mairie de Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.plugins.childpages.business.portlet;
35
36 import java.util.ArrayList;
37 import java.util.List;
38
39 import fr.paris.lutece.portal.business.page.Page;
40 import fr.paris.lutece.portal.business.page.PageHome;
41 import fr.paris.lutece.portal.business.portlet.Portlet;
42 import fr.paris.lutece.portal.business.portlet.PortletHome;
43 import fr.paris.lutece.portal.service.page.PageEvent;
44 import fr.paris.lutece.portal.service.page.PageEventListener;
45 import fr.paris.lutece.portal.service.page.PageService;
46
47 /**
48 * Listener to invalidate the portlets on page events
49 */
50 public class EventListener implements PageEventListener
51 {
52 /**
53 * flag to detect event processing reentry
54 */
55 private final ThreadLocal<Boolean> secondaryEvent;
56
57 /**
58 * Constructor; registers the listener
59 */
60 public EventListener( )
61 {
62 secondaryEvent = new ThreadLocal<Boolean>( ) {
63
64 @Override
65 protected Boolean initialValue( )
66 {
67 return false;
68 }
69
70 };
71 PageService.addPageEventListener( this );
72 }
73
74 /**
75 * Invalidate childpages portlets if a relevant page is changed
76 * @param event the page event
77 */
78 @Override
79 public void processPageEvent( PageEvent event )
80 {
81 if ( secondaryEvent.get( ) )
82 {
83 // this event was generated by us invalidating a portlet;
84 // ignore
85 return;
86 }
87 // from now on, events processed on this thread are generated by
88 // us invalidating portlets
89 secondaryEvent.set( true );
90 try {
91 int parentPageId = event.getPage( ).getParentPageId( );
92 if ( parentPageId == 0 )
93 {
94 // we reached the root
95 return;
96 }
97 List<Integer> parentPageIds = new ArrayList<Integer>( 2 );
98 parentPageIds.add( parentPageId );
99 if ( parentPageId != event.getPage( ).getOrigParentPageId( ) )
100 {
101 parentPageIds.add( event.getPage( ).getOrigParentPageId( ) );
102 }
103 for ( Integer pageId : parentPageIds )
104 {
105 // invalidate portlets with the default parent page
106 Page parentPage = PageHome.findByPrimaryKey( pageId );
107 List<Portlet> portlets = parentPage.getPortlets( );
108 String childPagesPortletId = ChildPagesPortletHome.getInstance( ).getPortletTypeId( );
109 for ( Portlet aPortlet : portlets )
110 {
111 if ( aPortlet.getPortletTypeId( ).equals( childPagesPortletId ) )
112 {
113 ChildPagesPortlet../../fr/paris/lutece/plugins/childpages/business/portlet/ChildPagesPortlet.html#ChildPagesPortlet">ChildPagesPortlet cpPortlet = ( ChildPagesPortlet ) aPortlet;
114 if ( cpPortlet.getParentPageId( ) == 0 )
115 {
116 PortletHome.invalidate( aPortlet );
117 }
118 }
119 }
120 // invalidate portlets with custom parent page
121 List<ChildPagesPortlet> childPagesportlets = ChildPagesPortletHome.getChildPagesPortlets( pageId );
122 for ( ChildPagesPortlet aPortlet : childPagesportlets )
123 {
124 PortletHome.invalidate( aPortlet );
125 }
126 }
127 } finally
128 {
129 // we've finished processing the event
130 secondaryEvent.set( false );
131 }
132 }
133 }