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

   1 package eu.svjatoslav.commons.network.navigation;
   2
   3 import java.util.ArrayList;
   4 import java.util.HashMap;
   5 import java.util.List;
   6 import java.util.Map;
   7
   8 import eu.svjatoslav.commons.network.Locale;
   9 import eu.svjatoslav.commons.string.WildCardMatcher;
  10
  11 public class NavigationItem {
  12
  13         private String matchingWildcard;
  14         private final Map<Locale, String> localeToTitle = new HashMap<Locale, String>();
  15         ArrayList<NavigationItem> subElements = new ArrayList<NavigationItem>();
  16         private Locale[] localeOrder;
  17         private NavigationItem parent;
  18         private final String linkUrl;
  19
  20         public NavigationItem(final Locale... localeOrder) {
  21                 if (localeOrder.length == 0)
  22                         this.localeOrder = new Locale[] { Locale.ENG };
  23                 else
  24                         this.localeOrder = localeOrder;
  25
  26                 matchingWildcard = null;
  27                 linkUrl = null;
  28         }
  29
  30         public NavigationItem(final NavigationItem parent, final String linkUrl,
  31                         final String... titles) {
  32                 this.parent = parent;
  33                 this.linkUrl = linkUrl;
  34
  35                 initializeLocalizedTitles(titles);
  36         }
  37
  38         public NavigationItem addChild(final String linkUrl, final String... titles) {
  39
  40                 final NavigationItem item = new NavigationItem(this, linkUrl, titles);
  41                 subElements.add(item);
  42
  43                 return item;
  44         }
  45
  46         public String getLinkUrl() {
  47                 return linkUrl;
  48         }
  49
  50         public Locale[] getLocaleOrder() {
  51                 if (localeOrder != null)
  52                         return localeOrder;
  53
  54                 return parent.getLocaleOrder();
  55         }
  56
  57         public List<NavigationItem> getSubElements() {
  58                 return subElements;
  59         }
  60
  61         public String getTitle() {
  62                 if (localeToTitle.size() != 1)
  63                         throw new RuntimeException("there shall be exactly one title");
  64
  65                 return localeToTitle.values().iterator().next();
  66         }
  67
  68         public String getTitle(final Locale locale) {
  69                 return localeToTitle.get(locale);
  70         }
  71
  72         private void initializeLocalizedTitles(final String... titles) {
  73                 final Locale[] locales = getLocaleOrder();
  74                 if (locales.length != titles.length)
  75                         throw new RuntimeException("There should be exactly "
  76                                         + locales.length + " title(s).");
  77
  78                 for (int i = 0; i < titles.length; i++)
  79                         localeToTitle.put(locales[i], titles[i]);
  80         }
  81
  82         public boolean matchesUrl(final String url) {
  83                 return WildCardMatcher.match(url, matchingWildcard);
  84
  85         }
  86
  87 }