KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > riotfamily > riot > list > command > core > DeleteCommand


1 /* ***** BEGIN LICENSE BLOCK *****
2  * Version: MPL 1.1
3  * The contents of this file are subject to the Mozilla Public License Version
4  * 1.1 (the "License"); you may not use this file except in compliance with
5  * the License. You may obtain a copy of the License at
6  * http://www.mozilla.org/MPL/
7  *
8  * Software distributed under the License is distributed on an "AS IS" basis,
9  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
10  * for the specific language governing rights and limitations under the
11  * License.
12  *
13  * The Original Code is Riot.
14  *
15  * The Initial Developer of the Original Code is
16  * Neteye GmbH.
17  * Portions created by the Initial Developer are Copyright (C) 2006
18  * the Initial Developer. All Rights Reserved.
19  *
20  * Contributor(s):
21  * Felix Gnass [fgnass at neteye dot de]
22  *
23  * ***** END LICENSE BLOCK ***** */
24 package org.riotfamily.riot.list.command.core;
25
26 import org.riotfamily.riot.editor.EditorDefinitionUtils;
27 import org.riotfamily.riot.editor.ListDefinition;
28 import org.riotfamily.riot.list.command.CommandContext;
29 import org.riotfamily.riot.list.command.CommandResult;
30 import org.riotfamily.riot.list.command.result.ShowListResult;
31 import org.springframework.web.util.HtmlUtils;
32
33 /**
34  * Command that deletes an item. To prevent accidental deletion a confirmation
35  * message is displayed.
36  */
37 public class DeleteCommand extends AbstractCommand {
38
39     public static final String JavaDoc ACTION_DELETE = "delete";
40     
41     public DeleteCommand() {
42         setShowOnForm(true);
43     }
44     
45     protected String JavaDoc getAction(CommandContext context) {
46         return ACTION_DELETE;
47     }
48     
49     protected boolean isEnabled(CommandContext context, String JavaDoc action) {
50         return context.getObjectId() != null;
51     }
52         
53     public String JavaDoc getConfirmationMessage(CommandContext context) {
54         
55         Class JavaDoc clazz = context.getListDefinition().getBeanClass();
56         Object JavaDoc item = context.getBean();
57         
58         String JavaDoc type = context.getMessageResolver().getClassLabel(null, clazz);
59         String JavaDoc label = HtmlUtils.htmlEscape(context.getListDefinition()
60                 .getDisplayDefinition().getLabel(item));
61         
62         Object JavaDoc[] args = new Object JavaDoc[] {label, type, context.getObjectId()};
63         
64         return context.getMessageResolver().getMessage("confirm.delete", args,
65                 "Do you really want to delete this element?");
66     }
67     
68     public CommandResult execute(CommandContext context) {
69         ListDefinition listDef = context.getListDefinition();
70         String JavaDoc parentId = context.getParentId();
71         Object JavaDoc parent = EditorDefinitionUtils.loadParent(listDef, parentId);
72         
73         Object JavaDoc item = context.getBean();
74         context.getDao().delete(item, parent);
75         return new ShowListResult(context);
76     }
77
78 }
79
Popular Tags