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


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) 2007
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.dao.ListParams;
27 import org.riotfamily.riot.dao.RiotDao;
28 import org.riotfamily.riot.editor.EditorDefinition;
29 import org.riotfamily.riot.editor.ListDefinition;
30 import org.riotfamily.riot.list.command.CommandContext;
31 import org.riotfamily.riot.list.command.CommandResult;
32 import org.riotfamily.riot.list.command.result.GotoUrlResult;
33 import org.riotfamily.riot.list.support.ListParamsImpl;
34
35 /**
36  * @author Felix Gnass [fgnass at neteye dot de]
37  */
38 public class DescendCommand extends AbstractCommand {
39
40     public static final String JavaDoc ID = "descend";
41     
42     private ListDefinition nextListDefinition;
43     
44     private EditorDefinition targetDefinition;
45     
46     private static ListParams params = new ListParamsImpl();
47     
48     public DescendCommand(ListDefinition listDefinition,
49             EditorDefinition targetDefinition) {
50         
51         this.nextListDefinition = listDefinition;
52         this.targetDefinition = targetDefinition;
53     }
54
55     public String JavaDoc getId() {
56         return ID;
57     }
58     
59     protected boolean isEnabled(CommandContext context, String JavaDoc action) {
60         RiotDao dao = nextListDefinition.getListConfig().getDao();
61         int size = dao.getListSize(context.getBean(), params);
62         if (size == -1) {
63             size = dao.list(context.getBean(), params).size();
64         }
65         return size > 0;
66     }
67     
68     public CommandResult execute(CommandContext context) {
69         return new GotoUrlResult(context, nextListDefinition.getEditorUrl(
70                 null, context.getObjectId()) + "?choose="
71                 + targetDefinition.getId());
72     }
73 }
74
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