visualize the negative tree as well

core/src/main/groovy/com/muwire/core/files/FileTree.groovy

@@ -45,7 +45,7 @@ class FileTree {
         true
     }    
     
-    private static class TreeNode {
+    public static class TreeNode {
         TreeNode parent
         File file
         final Set<TreeNode> children = new HashSet<>()

gui/griffon-app/models/com/muwire/gui/AdvancedSharingModel.groovy

@@ -1,6 +1,11 @@
 package com.muwire.gui
 
+import javax.swing.tree.DefaultMutableTreeNode
+import javax.swing.tree.DefaultTreeModel
+import javax.swing.tree.MutableTreeNode
+
 import com.muwire.core.Core
+import com.muwire.core.files.FileTree
 
 import griffon.core.artifact.GriffonModel
 import griffon.transform.Observable
@@ -9,12 +14,26 @@ import griffon.metadata.ArtifactProviderFor
 @ArtifactProviderFor(GriffonModel)
 class AdvancedSharingModel {
     def watchedDirectories = []
+    def treeRoot
+    def negativeTree
     
     Core core
     
     void mvcGroupInit(Map<String,String> args) {
         watchedDirectories.addAll(core.muOptions.watchedDirectories)
-//        view.watchedDirsTable.model.fireTableDataChanged()
+        
+        treeRoot = new DefaultMutableTreeNode()
+        negativeTree = new DefaultTreeModel(treeRoot)
+        copyTree(treeRoot, core.fileManager.negativeTree.root)
+    }
+    
+    private void copyTree(DefaultMutableTreeNode jtreeNode, FileTree.TreeNode fileTreeNode) {
+        jtreeNode.setUserObject(fileTreeNode.file?.getName())
+        fileTreeNode.children.each { 
+            MutableTreeNode newChild = new DefaultMutableTreeNode()
+            jtreeNode.add(newChild)
+            copyTree(newChild, it)
+        }
     }
     
 }

gui/griffon-app/views/com/muwire/gui/AdvancedSharingView.groovy

@@ -6,6 +6,7 @@ import griffon.metadata.ArtifactProviderFor
 
 import javax.swing.JDialog
 import javax.swing.JTabbedPane
+import javax.swing.JTree
 import javax.swing.SwingConstants
 
 import java.awt.BorderLayout
@@ -53,7 +54,8 @@ class AdvancedSharingView {
                 label(text : "Files which are explicitly not shared")
             }
             scrollPane( constraints : BorderLayout.CENTER ) {
-                // add tree here
+                def jtree = new JTree(model.negativeTree)
+                tree(rootVisible : false, jtree)
             }
         }
     }