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 public class Navigation {
   7
   8         private NavigationItem rootNavigationItem;
   9
  10         private NavigationItem defaultNavigationItem;
  11
  12         public NavigationItem getRootNavigationItem() {
  13                 return rootNavigationItem;
  14         }
  15
  16         public NavigationItem getSelectedItem(final String requestUrl) {
  17
  18                 try {
  19                         final String requestPath = new URL(requestUrl).getPath();
  20
  21                         for (final NavigationItem item : rootNavigationItem.subElements)
  22                                 if (item.matchesUrl(requestPath))
  23                                         return item;
  24                 } catch (final MalformedURLException e) {
  25                         System.out.println("Cannot handle URL: " + requestUrl);
  26                         e.printStackTrace();
  27                 }
  28
  29                 return defaultNavigationItem;
  30         }
  31
  32         public String getTopMenu(final String requestUrl) {
  33
  34                 final NavigationItem selectedItem = getSelectedItem(requestUrl);
  35                 final StringBuffer result = new StringBuffer();
  36
  37                 result.append("<div id=\"topNavigation\">");
  38
  39                 for (final NavigationItem item : rootNavigationItem.getSubElements()) {
  40
  41                         if (item == selectedItem)
  42                                 result.append("<a class=\"selected\" href=\"" + item.getLink()
  43                                                 + "\">");
  44                         else
  45                                 result.append("<a href=\"" + item.getLink() + "\">");
  46
  47                         result.append(item.getTitle());
  48                         result.append("</a>");
  49                 }
  50
  51                 result.append("</div>");
  52
  53                 return result.toString();
  54         }
  55
  56         public void setRootNavigationItem(final NavigationItem rootNavigationItem) {
  57                 this.rootNavigationItem = rootNavigationItem;
  58         }
  59
  60 }