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Java > Open Source Codes > org > apache > cocoon > woody > formmodel > ContainerWidget


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.cocoon.woody.formmodel;
17 import java.util.Iterator JavaDoc;
18
19 /**
20  * Interface to be implemented by Widgets which contain other widgets.
21  *
22  * @author Timothy Larson
23  * @version $Id: ContainerWidget.java 30932 2004-07-29 17:35:38Z vgritsenko $
24  */
25 public interface ContainerWidget extends Widget {
26     
27     /**
28      * Adds a child widget.
29      */
30     public void addWidget(Widget widget);
31
32     /**
33      * Checks if there is a child widget with the given id.
34      */
35     public boolean hasWidget(String JavaDoc id);
36
37     /**
38      * Gets the child widget with the given id.
39      * Returns null if there is no child with the given id.
40      */
41     public Widget getWidget(String JavaDoc id);
42
43     /**
44      * Returns an iterator over the widgets this object contains
45      */
46     public Iterator JavaDoc getChildren();
47
48 }
49
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