1 files changed, 64 insertions, 0 deletions
diff --git a/NET/worlds/console/TreeNode.java b/NET/worlds/console/TreeNode.java
new file mode 100644
index 0000000..f424f12
--- /dev/null
+++ b/NET/worlds/console/TreeNode.java
@@ -0,0 +1,64 @@
+package NET.worlds.console;
+
+import java.util.Vector;
+
+public abstract class TreeNode {
+   private int level;
+   private TreeNode parent;
+   private boolean isOpen;
+
+   protected TreeNode(TreeNode parent) {
+      this.parent = parent;
+      if (parent != null) {
+         this.level = parent.getLevel() + 1;
+      }
+   }
+
+   public int getLevel() {
+      return this.level;
+   }
+
+   public TreeNode getParent() {
+      return this.parent;
+   }
+
+   public boolean isDescendant(TreeNode e) {
+      while (e != null) {
+         if ((e = e.getParent()) == this) {
+            return true;
+         }
+      }
+
+      return false;
+   }
+
+   public boolean isOpen() {
+      return this.isOpen;
+   }
+
+   public void setOpen(boolean isOpen) {
+      this.isOpen = isOpen;
+   }
+
+   public boolean displayAsTitle() {
+      return false;
+   }
+
+   @Override
+   public boolean equals(Object obj) {
+      return obj instanceof TreeNode && this.getObject().equals(((TreeNode)obj).getObject());
+   }
+
+   @Override
+   public int hashCode() {
+      return this.getObject().hashCode();
+   }
+
+   public abstract Vector<?> getChildren();
+
+   public boolean shouldSort() {
+      return true;
+   }
+
+   public abstract Object getObject();
+}