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Java > Open Source Codes > org > apache > directory > ldapstudio > browser > ui > views > modificationlogs > NewerAction


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  */

20
21 package org.apache.directory.ldapstudio.browser.ui.views.modificationlogs;
22
23
24 import org.apache.directory.ldapstudio.browser.common.actions.BrowserAction;
25 import org.apache.directory.ldapstudio.browser.ui.BrowserUIConstants;
26 import org.apache.directory.ldapstudio.browser.ui.BrowserUIPlugin;
27 import org.eclipse.jface.resource.ImageDescriptor;
28
29
30 /**
31  * Action to switch to a newer logfile.
32  *
33  * @author <a HREF="mailto:dev@directory.apache.org">Apache Directory Project</a>
34  * @version $Rev$, $Date$
35  */

36 public class NewerAction extends BrowserAction
37 {
38     
39     /** The modification logs view. */
40     private ModificationLogsView view;
41
42
43     /**
44      * Creates a new instance of NewerAction.
45      *
46      * @param view the modification logs view
47      */

48     public NewerAction( ModificationLogsView view )
49     {
50         this.view = view;
51     }
52
53
54     /**
55      * {@inheritDoc}
56      */

57     public void dispose()
58     {
59         super.dispose();
60     }
61
62
63     /**
64      * {@inheritDoc}
65      */

66     public void run()
67     {
68         ModificationLogsViewInput oldInput = ( ModificationLogsViewInput ) getInput();
69         ModificationLogsViewInput newInput = new ModificationLogsViewInput( oldInput.getConnection(), oldInput.getIndex() - 1 );
70         view.getUniversalListener().setInput( newInput );
71         view.getUniversalListener().scrollToOldest();
72
73         // go to top
74
view.getMainWidget().getSourceViewer().setTopIndex( 0 );
75     }
76
77
78     /**
79      * {@inheritDoc}
80      */

81     public String JavaDoc getText()
82     {
83         return "Newer";
84     }
85
86
87     /**
88      * {@inheritDoc}
89      */

90     public ImageDescriptor getImageDescriptor()
91     {
92         return BrowserUIPlugin.getDefault().getImageDescriptor( BrowserUIConstants.IMG_NEXT );
93     }
94
95
96     /**
97      * {@inheritDoc}
98      */

99     public String JavaDoc getCommandId()
100     {
101         return null;
102     }
103
104
105     /**
106      * {@inheritDoc}
107      */

108     public boolean isEnabled()
109     {
110         return getInput() != null && ( getInput() instanceof ModificationLogsViewInput )
111             && ( ( ModificationLogsViewInput ) getInput() ).getIndex() > 0;
112     }
113
114 }
115
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