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                         final NavigationItem match = rootNavigationItem
  29                                         .getMatchingNavigationItem(requestPath);
  30
  31                         if (match != null)
  32                                 return match;
  33                 } catch (final MalformedURLException e) {
  34                         System.out.println("Cannot handle URL: " + requestUrl);
  35                         e.printStackTrace();
  36                 }
  37
  38                 return getDefaultNavigationItem();
  39         }
  40
  41         public String getTopMenu(final HttpServletRequest request) {
  42
  43                 final NavigationItem selectedItem = getSelectedItem(request);
  44                 final StringBuffer result = new StringBuffer();
  45
  46                 result.append("<div class=\"navigationMenu\">");
  47
  48                 for (final NavigationItem item : getRootNavigationItem()
  49                                 .getSubElements()) {
  50
  51                         if (item == selectedItem)
  52                                 result.append("<a class=\"menuItemSelected\" href=\""
  53                                                 + item.getLinkUrl() + "\">");
  54                         else
  55                                 result.append("<a class=\"menuItem\" href=\""
  56                                                 + item.getLinkUrl() + "\">");
  57
  58                         result.append("<div>" + item.getTitle() + "</div>");
  59                         result.append("</a>");
  60                 }
  61
  62                 result.append("</div>");
  63
  64                 return result.toString();
  65         }
  66
  67         public void setDefaultNavigationItem(
  68                         final NavigationItem defaultNavigationItem) {
  69                 this.defaultNavigationItem = defaultNavigationItem;
  70         }
  71
  72         public void setRootNavigationItem(final NavigationItem rootNavigationItem) {
  73                 this.rootNavigationItem = rootNavigationItem;
  74         }
  75
  76 }