[MD Bookmarks] Double Click

chrome/browser/resources/md_bookmarks/store.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var BookmarksStore = Polymer({
   is: 'bookmarks-store',
 
   properties: {
     /** @type {BookmarkTreeNode} */
     rootNode: {
@@ skipping 339 matching lines @@
     // Deselect the old folder if defined.
     if (this.selectedId && this.idToNodeMap_[this.selectedId])
       this.set(
           this.idToNodeMap_[this.selectedId].path + '.isSelectedFolder', false);
 
     // Check if the selected id is that of a defined folder.
     var id = /** @type {string} */ (e.detail);
     if (!this.idToNodeMap_[id] || this.idToNodeMap_[id].url)
       id = this.rootNode.children[0].id;
 
-    var newFolder = this.idToNodeMap_[id];
-    this.set(newFolder.path + '.isSelectedFolder', true);
+    var folder = this.idToNodeMap_[id];
+    this.set(folder.path + '.isSelectedFolder', true);
     this.selectedId = id;
+
+    if (folder.id == this.rootNode.id)
+      return;
+
+    var parent = this.idToNodeMap_[folder.parentId];
+    while (parent) {
+      if (!parent.isOpen) {
+        this.fire('folder-open-changed', {
+          id: parent.id,
+          open: true,
+        });
+      }
+
+      parent = this.idToNodeMap_[parent.parentId];
+    }
   },
 
   /**
    * Handles events that open and close folders.
    * @param {CustomEvent} e
    * @private
    */
   onFolderOpenChanged_: function(e) {
     var folder = this.idToNodeMap_[e.detail.id];
     this.set(folder.path + '.isOpen', e.detail.open);
@@ skipping 49 matching lines @@
     idToNodeMap[bookmarkNode.id] = bookmarkNode;
 
   if (bookmarkNode.url)
     return;
 
   bookmarkNode.isSelectedFolder = false;
   bookmarkNode.isOpen = true;
   for (var i = 0; i < bookmarkNode.children.length; i++)
     BookmarksStore.initNodes(bookmarkNode.children[i], idToNodeMap);
 };