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1
2 package org.roller.presentation.tags.menu;
3
4 import java.util.ArrayList  ;
5 import java.util.Arrays ;
6 import java.util.List ;
7 import java.util.Vector ;
8
9 import javax.servlet.http.HttpServletRequest ;
10 import javax.servlet.http.HttpSession ;
11 import javax.servlet.jsp.PageContext ;
12
13 import org.roller.RollerException;
14 import org.roller.util.Utilities;
15
16
18
19 public class MenuImpl extends BaseRollerMenu implements Menu
20 {
21 private String mMenuId = null;
22
23
24 Vector mMenuItems = new Vector ();
25
26
27 boolean mDefault = false;
28
29 public MenuImpl() {}
30
31
32 public MenuImpl(String n) { super(n); }
33
34
35 public void addItem( MenuItemImpl item ) { mMenuItems.addElement(item); };
36
37
38 public void setMenuId( String v ) { mMenuId = v; }
39
40
41 public String getMenuId() { return mMenuId; }
42
43
44 public Vector getMenuItems() { return mMenuItems; }
45
46
48 public MenuItem getSelectedMenuItem( HttpServletRequest req ) throws RollerException
49 {
50 return getSelectedMenuItem( req, true ) ;
51 }
52
53
57 public MenuItem getSelectedMenuItem( HttpServletRequest req,
58 boolean returnDefault ) throws RollerException
59 {
60 MenuItemImpl def = null;
61 MenuItemImpl selected = null;
62 for ( int i=0; i<mMenuItems.size(); i++ )
63 {
64 MenuItemImpl item = (MenuItemImpl)mMenuItems.elementAt(i);
65 if ( item.isSelected( req ) )
66 {
67 selected = item;
68 break;
69 }
70 if ( item.isPermitted(req) && def == null)
72 {
73 def = item;
74 }
75 }
76 if ( selected != null )
77 {
78 return selected;
79 }
80 else if ( returnDefault )
81 {
82 return def;
83 }
84 else
85 {
86 return null;
87 }
88 }
89
90
94 public MenuItem getDefaultMenuItem( HttpServletRequest req )
95 throws RollerException
96 {
97 MenuItemImpl def = null;
98 MenuItemImpl selected = null;
99 for ( int i=0; i<mMenuItems.size(); i++ )
100 {
101 MenuItemImpl item = (MenuItemImpl)mMenuItems.elementAt(i);
103 if (item.isPermitted(req) && def == null)
104 {
105 def = item;
106 }
107 }
108 return def;
109 }
110
111
115 public boolean isSelected( HttpServletRequest req ) throws RollerException
116 {
117 boolean selected = false;
118 HttpSession ses = req.getSession(false);
119
120 String menuKey = req.getParameter(RollerMenuModel.MENU_KEY );
121 if (null == menuKey)
122 {
123 menuKey = (String )req.getAttribute(RollerMenuModel.MENU_KEY);
124 }
125 if (null == menuKey)
126 {
127 menuKey = (String )ses.getAttribute(mMenuId+"_"+RollerMenuModel.MENU_KEY);
128 }
129
130 if (menuKey != null && menuKey.equals(mName))
131 {
132 selected = true;
133 }
134 else
135 {
136 if ( getSelectedMenuItem( req, false ) != null )
137 {
138 selected = true;
139 }
140 }
141
142 if ( ses != null && selected )
143 {
144 ses.setAttribute(mMenuId + "_" + RollerMenuModel.MENU_KEY, mName);
145 }
146
147 return selected;
148 }
149
150
151 public String getUrl( PageContext pctx )
152 {
153 String url = null;
154 try
155 {
156 HttpServletRequest req = (HttpServletRequest )pctx.getRequest();
157 String surl = getDefaultMenuItem( req ).getUrl( pctx );
158 StringBuffer sb = new StringBuffer ( surl );
159 if ( surl.indexOf("?") == -1 )
160 {
161 sb.append( "?" );
162 }
163 else
164 {
165 sb.append( "&" );
166 }
167 sb.append( RollerMenuModel.MENU_KEY );
168 sb.append( "=" );
169 sb.append( getName() );
170 url = sb.toString();
171 }
172 catch (Exception e)
173 {
174 pctx.getServletContext().log(
175 "ERROR in menu creating URL",e);
176 }
177 return url;
178 }
179
180 }
181
182 |
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