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1
4 package fr.improve.struts.taglib.layout.treeview;
5
6 import java.util.Collections  ;
7 import java.util.HashSet ;
8 import java.util.Iterator ;
9 import java.util.Set ;
10 import java.util.StringTokenizer ;
11
12 import javax.servlet.http.Cookie ;
13 import javax.servlet.http.HttpServletRequest ;
14 import javax.servlet.http.HttpServletResponse ;
15
16 import org.apache.commons.logging.Log;
17 import org.apache.commons.logging.LogFactory;
18
19 import fr.improve.struts.taglib.layout.menu.MenuComponent;
20
21
22
27 public class TreeViewReconciler {
28 private static final String RECONCEILE_KEY = "fr.improve.struts.taglib.layout.treeview.TreeViewReconciler";
29 private static final Log Log = LogFactory.getLog(TreeViewReconciler.class);
30
31 public static void reconceileFromCookie(MenuComponent in_menu, HttpServletRequest in_request) {
32 if (!isReconcile(in_menu, in_request)) {
33 String lc_cookie = getTreeviewCookie(in_request);
34 Log.debug("Reconceiling menu " + in_menu.getName() + " from cookie value " + lc_cookie);
35 if (lc_cookie!=null) {
36 in_menu.closeAll();
37 StringTokenizer lc_tokenizer = new StringTokenizer (lc_cookie, "_");
38 while (lc_tokenizer.hasMoreTokens()) {
39 String lc_token = lc_tokenizer.nextToken();
40 if (lc_token.startsWith("treeView")) {
41 lc_token = lc_token.substring(8);
42 }
43 if (lc_token.startsWith(in_menu.getName() + "*")) {
44 MenuComponent lc_component = getComponentWithPath(in_menu, lc_token.substring(in_menu.getName().length()+1));
45 if (lc_component!=null) {
46 lc_component.setOpen(true);
47 }
48 }
49 }
50 setReconceile(in_menu, in_request);
51 }
52 }
53 }
54
55 private static void setReconceile(MenuComponent in_menu, HttpServletRequest in_request) {
56 Set lc_map = (Set ) in_request.getAttribute(RECONCEILE_KEY);
57 if (lc_map==null) {
58 lc_map = new HashSet ();
59 in_request.setAttribute(RECONCEILE_KEY, lc_map);
60 }
61 lc_map.add(in_menu);
62 }
63
64 private static boolean isReconcile(MenuComponent in_menu, HttpServletRequest in_request) {
65 Set lc_map = (Set ) in_request.getAttribute(RECONCEILE_KEY);
66 if (lc_map==null) {
67 return false;
68 }
69 return lc_map.contains(in_menu);
70 }
71
72 private static Set getReconciledMenu(HttpServletRequest in_request) {
73 Set lc_map = (Set ) in_request.getAttribute(RECONCEILE_KEY);
74 if (lc_map==null) {
75 return Collections.EMPTY_SET;
76 } else {
77 return lc_map;
78 }
79 }
80
81
82
83 private static String getTreeviewCookie(HttpServletRequest in_request) {
84 Cookie [] lc_cookies = in_request.getCookies();
85
86 if (lc_cookies==null) return null;
87 for (int i=0;i<lc_cookies.length;i++) {
88 Cookie lc_cookie = lc_cookies[i];
89 if (lc_cookie.getName().equals("treeView")) {
90 return lc_cookie.getValue();
91 }
92 }
93 return null;
94 }
95
96 static MenuComponent getComponentWithPath(MenuComponent in_menu, String in_path) {
97 int lc_starPos = in_path.indexOf('*');
98 if(lc_starPos!=-1) {
99 String lc_id = in_path.substring(0, lc_starPos);
100 String lc_subPath = in_path.substring(lc_starPos+1);
101 MenuComponent lc_menu = in_menu.getChild(lc_id);
102 if (lc_menu!=null) {
103 return getComponentWithPath(lc_menu, lc_subPath);
104 } else {
105 return null;
106 }
107 } else {
108 return in_menu.getChild(in_path);
109 }
110 }
111
112 public static void reconceileFromMenu(HttpServletRequest in_request, HttpServletResponse in_response) {
113 Set lc_menus = getReconciledMenu(in_request);
114 Iterator lc_it = lc_menus.iterator();
115 while (lc_it.hasNext()) {
116 MenuComponent lc_menu = (MenuComponent) lc_it.next();
117 reconceileFromMenu(lc_menu, in_request, in_response);
118 lc_menu.closeAll();
119 }
120 in_request.removeAttribute(RECONCEILE_KEY);
121 }
122
123 private static void reconceileFromMenu(MenuComponent in_menu, HttpServletRequest in_request, HttpServletResponse in_response) {
124 StringBuffer lc_cookievalue = new StringBuffer ();
125 String lc_path = in_menu.getName();
126 reconceileFromMenu(in_menu, lc_cookievalue, lc_path);
127 if (lc_cookievalue.length()>0) {
128 lc_cookievalue.append("_");
129 }
130 String lc_newCookieValue = lc_cookievalue.toString();
131 Log.debug("Reconceiling cookie with menu " + in_menu.getName() + ". New cookie value is : " + lc_newCookieValue);
132 Cookie lc_cookie = new Cookie ("treeView", lc_newCookieValue);
133 lc_cookie.setPath(in_request.getContextPath());
134 in_response.addCookie(lc_cookie);
135
136 Cookie [] lc_cookies = in_request.getCookies();
137 if (lc_cookies!=null) {
138 for (int i=0;i<lc_cookies.length;i++) {
139 Cookie lc_oldCookie = lc_cookies[i];
140 if (lc_oldCookie.getName().equals("treeView")) {
141 lc_oldCookie.setValue(lc_newCookieValue);
142 }
143 }
144 }
145 in_menu.closeAll();
146 }
147
148 private static void reconceileFromMenu(MenuComponent in_menu, StringBuffer lc_cookievalue, String lc_path) {
149 if (in_menu.isOpen() || in_menu.getParent()==null) {
150 MenuComponent[] lc_children = (MenuComponent[]) in_menu.getMenuComponents();
151 if (in_menu.getParent()!=null) {
152 lc_cookievalue.append("_treeView");
153 lc_cookievalue.append(lc_path);
154 }
155
156 for (int i=0; i < lc_children.length; i++) {
157 MenuComponent lc_child = lc_children[i];
158 String lc_id = lc_child.getId();
159 if (lc_id==null) {
160 lc_id = String.valueOf(i);
161 }
162 reconceileFromMenu(lc_child, lc_cookievalue, lc_path + "*" + lc_id);
163 }
164 }
165 }
166
167 }
168 |
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