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 getDefaultNavigationItem() {
  13                 return defaultNavigationItem;
  14         }
  15
  16         public NavigationItem getRootNavigationItem() {
  17                 return rootNavigationItem;
  18         }
  19
  20         public NavigationItem getSelectedItem(final String requestUrl) {
  21
  22                 try {
  23                         final String requestPath = new URL(requestUrl).getPath();
  24
  25                         for (final NavigationItem item : rootNavigationItem.subElements)
  26                                 if (item.matchesUrl(requestPath))
  27                                         return item;
  28                 } catch (final MalformedURLException e) {
  29                         System.out.println("Cannot handle URL: " + requestUrl);
  30                         e.printStackTrace();
  31                 }
  32
  33                 return getDefaultNavigationItem();
  34         }
  35
  36         public String getTopMenu(final String requestUrl) {
  37
  38                 final NavigationItem selectedItem = getSelectedItem(requestUrl);
  39                 final StringBuffer result = new StringBuffer();
  40
  41                 result.append("<div id=\"topNavigation\">");
  42
  43                 for (final NavigationItem item : rootNavigationItem.getSubElements()) {
  44
  45                         if (item == selectedItem)
  46                                 result.append("<a class=\"selected\" href=\"" + item.getLink()
  47                                                 + "\">");
  48                         else
  49                                 result.append("<a href=\"" + item.getLink() + "\">");
  50
  51                         result.append(item.getTitle());
  52                         result.append("</a>");
  53                 }
  54
  55                 result.append("</div>");
  56
  57                 return result.toString();
  58         }
  59
  60         public void setDefaultNavigationItem(
  61                         final NavigationItem defaultNavigationItem) {
  62                 this.defaultNavigationItem = defaultNavigationItem;
  63         }
  64
  65         public void setRootNavigationItem(final NavigationItem rootNavigationItem) {
  66                 this.rootNavigationItem = rootNavigationItem;
  67         }
  68
  69 }