Added weights to navigation object

src/wa/server/WAContext.java

@@ -43,7 +43,7 @@ public class WAContext {
         nav = WANavigation.getRootNav();
 
         // Breadcrumb
-        breadcrumb = WANavigation.getNavBreadcrumb(request);
+        breadcrumb = WANavigation.getBreadcrumb(request);
     }
 
 

src/wa/server/page/struct/WANavigation.java

@@ -25,9 +25,12 @@ package wa.server.page.struct;
 import java.util.*;
 
 /**
+ * A class representing a navigation hierarchy.
+ *
  * Created by Ziver on 2015-04-02.
  */
 public class WANavigation implements Iterable{
+    private static final String NAVIGATION_URL_KEY = "i";
     private static int nextId = 0;
     private static HashMap<Integer, WANavigation> navMap = new HashMap<Integer, WANavigation>();
     private static WANavigation rootNav = new WANavigation(null);
@@ -35,6 +38,7 @@ public class WANavigation implements Iterable{
     private final int id;
     private String url;
     private String name;
+    private int weight;
     private WANavigation parentNav;
     private ArrayList<WANavigation> subNav;
     private Object resource;
@@ -43,7 +47,7 @@ public class WANavigation implements Iterable{
     private WANavigation(String name) {
         this.id = nextId++;
         this.navMap.put(this.id, this);
-        this.url = "?i="+this.id;
+        this.url = "?"+NAVIGATION_URL_KEY+"="+this.id;
         this.name = name;
         this.subNav = new ArrayList<>();
     }
@@ -63,8 +67,16 @@ public class WANavigation implements Iterable{
         }
         return null;
     }
+    private void sortSubNavs(){
+        Collections.sort(subNav, new Comparator<WANavigation>() {
+            @Override
+            public int compare(WANavigation o1, WANavigation o2) {
+                return o1.weight - o2.weight;
+            }
+        });
+    }
     /**
-     * Will create a new subnav if it does not already exist or return the existing one.
+     * Will create a new sub-nav if it does not already exist or return the existing one.
      */
     public WANavigation createSubNav(String name) {
         WANavigation nav = getSubNav(name);
@@ -77,6 +89,7 @@ public class WANavigation implements Iterable{
         return nav;
     }
 
+
     public String getName(){
         return name;
     }
@@ -89,17 +102,27 @@ public class WANavigation implements Iterable{
     public void setResource(Object obj){
         resource = obj;
     }
-
     private void setParentNav(WANavigation nav){
         this.parentNav = nav;
     }
+    /**
+     * Sets the weight of this navigation object. The weight is
+     * used for deciding the order the parent will sort all sub navigation.
+     * Lower values will be at the top of sub-nav list.
+     */
+    public void setWeight(int weightOrder){
+        this.weight = weightOrder;
+        if(parentNav != null)
+            parentNav.sortSubNavs();
+    }
+
 
     @Override
     public boolean equals(Object o){
         if(o instanceof String)
             return this.name.equals(o);
         return this == o ||
-                (o != null && this.name.equals(((WANavigation)o).name));
+                (o != null && this.id == (((WANavigation)o).id));
     }
 
 
@@ -110,10 +133,15 @@ public class WANavigation implements Iterable{
         return rootNav.createSubNav(name);
     }
 
-    public static List<WANavigation> getNavBreadcrumb(Map<String, String> request) {
+    /**
+     * @param   request     A map of all url parameters sent from client
+     * @return a List of WANavigation objects depicting the navigation hierarchy for the
+     *          requested page from the client. first entry will be the root navigation object.
+     */
+    public static List<WANavigation> getBreadcrumb(Map<String, String> request) {
         LinkedList list = new LinkedList();
-        if(request.containsKey("i")){
-            WANavigation current = navMap.get(Integer.parseInt(request.get("i")));
+        if(request.containsKey(NAVIGATION_URL_KEY)){
+            WANavigation current = navMap.get(Integer.parseInt(request.get(NAVIGATION_URL_KEY)));
             while(current != null && current != rootNav){
                 list.addFirst(current);
                 current = current.parentNav;