KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > pluto > portalImpl > aggregation > navigation > AbstractNavigationFragment


1 /*
2  * Copyright 2003,2004 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 /*
17
18  */
19
20 package org.apache.pluto.portalImpl.aggregation.navigation;
21
22 import javax.servlet.ServletConfig JavaDoc;
23
24 import org.apache.pluto.portalImpl.aggregation.AbstractFragmentSingle;
25 import org.apache.pluto.portalImpl.core.PortalURL;
26
27 public abstract class AbstractNavigationFragment extends AbstractFragmentSingle
28 {
29
30     public AbstractNavigationFragment(String JavaDoc id,
31                                       ServletConfig JavaDoc config,
32                                       org.apache.pluto.portalImpl.aggregation.Fragment parent,
33                                       org.apache.pluto.portalImpl.om.page.Fragment fragDesc,
34                                       org.apache.pluto.portalImpl.aggregation.navigation.Navigation navigation)
35     throws Exception JavaDoc
36     {
37         super(id, config, parent, fragDesc, navigation);
38     }
39
40     public void createURL(PortalURL url)
41     {
42         getParent().createURL(url);
43         url.addGlobalNavigation(getId());
44     }
45
46     public boolean isPartOfURL(PortalURL url)
47     {
48         return url.isPartOfGlobalNavigation(getId());
49     }
50
51     public org.apache.pluto.portalImpl.aggregation.navigation.Navigation getRootNavigation()
52     {
53         org.apache.pluto.portalImpl.aggregation.Fragment returnvalue = this;
54         for (; returnvalue.getParent() != null; returnvalue = returnvalue.getParent()) {
55         }
56         return returnvalue.getNavigation();
57     }
58
59     /**
60      * If the given parent is NULL, the method returns the first fragment containing
61      * navigational information after the root element.
62      * <P>
63      * if the given parent points to a fragment, the method returns the first child
64      * fragment that contains navigational information
65      *
66      * @param parent the parent fragment or NULL
67      * @return Returns the first fragment that contains navigational information.
68      */
69 /*
70     public org.apache.pluto.portalImpl.aggregation.Fragment
71         getFirstNavigation(org.apache.pluto.portalImpl.aggregation.Fragment parent)
72     {
73         org.apache.pluto.portalImpl.aggregation.Fragment returnvalue = null;
74         if (parent==null)
75         {
76             returnvalue = this;
77             // get root fragment...this does not need to have a navigation
78             for (; returnvalue.getParent()!=null; returnvalue = returnvalue.getParent()) {}
79             
80             // root element does not have a navigation information
81             if (returnvalue.getNavigation()==null)
82             {
83                 returnvalue = getFirstNavigation(returnvalue);
84             }
85
86         }
87         else
88         {
89             Iterator iterator = parent.getChildFragments().iterator();
90             while (iterator.hasNext())
91             {
92                 org.apache.pluto.portalImpl.aggregation.Fragment fragment =
93                     (org.apache.pluto.portalImpl.aggregation.Fragment)iterator.next();
94                 if (fragment.getNavigation()!=null)
95                 {
96                     returnvalue = fragment;
97                     break;
98                 }
99             }
100
101             // no fragment with navigational information found yet, so try a deep search
102             if (returnvalue==null)
103             {
104                 iterator = parent.getChildFragments().iterator();
105                 while (iterator.hasNext())
106                 {
107                     org.apache.pluto.portalImpl.aggregation.Fragment fragment =
108                         (org.apache.pluto.portalImpl.aggregation.Fragment)iterator.next();
109
110                     returnvalue = getFirstNavigation(fragment);
111
112                     if (returnvalue!=null)
113                         break;
114
115                 }
116
117             }
118
119         }
120         return returnvalue;
121     }
122
123     public org.apache.pluto.portalImpl.aggregation.Fragment
124         getNextNavigation(org.apache.pluto.portalImpl.aggregation.Fragment previous)
125     {
126         if (previous==null)
127             throw new IllegalArgumentException("previous navigation mus not be null!");
128
129
130         return null;
131     }
132 */
133 }
134
Popular Tags