src/main/java/eu/svjatoslav/commons/network/navigation/Navigation.java

   1 package eu.svjatoslav.commons.network.navigation;
   2
   3 import java.net.MalformedURLException;
   4 import java.net.URL;
   5
   6 import javax.servlet.http.HttpServletRequest;
   7
   8 public class Navigation {
   9
  10         private NavigationItem rootNavigationItem;
  11
  12         private NavigationItem defaultNavigationItem;
  13
  14         public NavigationItem getDefaultNavigationItem() {
  15                 return defaultNavigationItem;
  16         }
  17
  18         public NavigationItem getRootNavigationItem() {
  19                 return rootNavigationItem;
  20         }
  21
  22         public NavigationItem getSelectedItem(final HttpServletRequest request) {
  23                 final String requestUrl = request.getRequestURL().toString();
  24
  25                 try {
  26                         final String requestPath = new URL(requestUrl).getPath();
  27
  28                         for (final NavigationItem item : rootNavigationItem.subElements)
  29                                 if (item.matchesUrl(requestPath))
  30                                         return item;
  31                 } catch (final MalformedURLException e) {
  32                         System.out.println("Cannot handle URL: " + requestUrl);
  33                         e.printStackTrace();
  34                 }
  35
  36                 return getDefaultNavigationItem();
  37         }
  38
  39         public String getTopMenu(final HttpServletRequest request) {
  40
  41                 final NavigationItem selectedItem = getSelectedItem(request);
  42                 final StringBuffer result = new StringBuffer();
  43
  44                 result.append("<div class=\"navigationMenu\">");
  45
  46                 for (final NavigationItem item : getRootNavigationItem()
  47                                 .getSubElements()) {
  48
  49                         if (item == selectedItem)
  50                                 result.append("<a class=\"menuItemSelected\" href=\""
  51                                                 + item.getLinkUrl() + "\">");
  52                         else
  53                                 result.append("<a class=\"menuItem\" href=\""
  54                                                 + item.getLinkUrl() + "\">");
  55
  56                         result.append("<div>" + item.getTitle() + "</div>");
  57                         result.append("</a>");
  58                 }
  59
  60                 result.append("</div>");
  61
  62                 return result.toString();
  63         }
  64
  65         public void setDefaultNavigationItem(
  66                         final NavigationItem defaultNavigationItem) {
  67                 this.defaultNavigationItem = defaultNavigationItem;
  68         }
  69
  70         public void setRootNavigationItem(final NavigationItem rootNavigationItem) {
  71                 this.rootNavigationItem = rootNavigationItem;
  72         }
  73
  74 }