plugins/svn4idea/src/org/jetbrains/idea/svn/dialogs/browser/Expander.java

   1 package org.jetbrains.idea.svn.dialogs.browser;
   2
   3 import org.jetbrains.idea.svn.dialogs.ReloadListener;
   4 import org.jetbrains.idea.svn.dialogs.RepositoryBrowserComponent;
   5 import org.jetbrains.idea.svn.dialogs.RepositoryTreeNode;
   6
   7 import javax.swing.tree.TreeNode;
   8 import java.util.Enumeration;
   9 import java.util.LinkedList;
  10 import java.util.List;
  11
  12 public class Expander implements ReloadListener {
  13   private final List<String> pathElements;
  14   private final RepositoryBrowserComponent myBrowser;
  15
  16   public Expander(final TreeNode[] path, final RepositoryBrowserComponent browser) {
  17     myBrowser = browser;
  18     pathElements = new LinkedList<String>();
  19     // starting from 1st level child, not root (root is already defined/found)
  20     for (int i = 1; i < path.length; i++) {
  21       TreeNode node = path[i];
  22       pathElements.add(node.toString());
  23     }
  24   }
  25
  26   public void onAfterReload(final RepositoryTreeNode node) {
  27     if (node.isLeaf()) {
  28       return;
  29     }
  30
  31     myBrowser.expandNode(node);
  32
  33     if (pathElements.isEmpty()) {
  34       return;
  35     }
  36
  37     final String nextKey = pathElements.remove(0);
  38
  39     final Enumeration children = node.children();
  40     while ((nextKey != null) && children.hasMoreElements()) {
  41       final TreeNode treeNode = (TreeNode) children.nextElement();
  42
  43       if (treeNode instanceof RepositoryTreeNode) {
  44         final RepositoryTreeNode repositoryTreeNode = (RepositoryTreeNode) treeNode;
  45         // toString() is sufficient here -> user objects do not define equals()
  46         if (nextKey.equals(treeNode.toString())) {
  47           repositoryTreeNode.registerReloadListener(this);
  48           break;
  49         }
  50       }
  51     }
  52   }
  53 }