Firefox bookmarks exploration not going past first level with Javascript

I've written some code to explore my Firefox bookmarks but I only get the first level of bookmarks (i.e. I don't get the links in the folders).

e.g.

• Search_engines /

  • yahoo.com

• google.com

In this example I have only access to Search_engines and google.com not yahoo.com

My function being recursive I don't know why this happens.

my code :

function browse_bookmark_node(bookmark_node, array)
{
    // We explore the bookmarks with this function     
   // iterate over the immediate children of this folder
   for (var i = 0; i < bookmark_node.childCount; i ++) {
       var node = bookmark_node.getChild(i);
       if (node.type ==0) {
          // the node is a link so we add it to the array
          array.push(node.title); 
       } else if (node.type ==6) {
          // the node is a folder so we explore it
          browse_bookmark_node(node, array);
       }
   }
}

function wrapper_browse_bookmark_node(bookmark_node) {
   // We use this function to wrapp the function browse_bookmark_node and keep track of the links
   var array = [];
   browse_bookmark_node(bookmark_node, array);
   return array;
}

// All the code following is used to access firefox bookmarks and works fine
var historyService = Components.classes["@mozilla.org/browser/nav-history-service;1"]
                               .getService(Components.interfaces.nsINavHistoryService);
var options = historyService.getNewQueryOptions();
var query = historyService.getNewQuery();

var bookmarksService = Components.classes["@mozilla.org/browser/nav-bookmarks-service;1"]
                                 .getService(Components.interfaces.nsINavBookmarksService);
var bookmarksMenuFolder = bookmarksService.bookmarksMenuFolder;

query.setFolders([bookmarksMenuFolder], 1);

var result = historyService.executeQuery(query, options);
va开发者_StackOverflowr rootNode = result.root;
rootNode.containerOpen = true;

// The function call to explore the bookmarks
var links_array = wrapper_browse_bookmark_node(rootNode);

// close a container after using it!
rootNode.containerOpen = false;

One obvious mistake is using toolbarFolder as a starting point - that's only the bookmarks toolbar. If you want all bookmarks (meaning bookmarks menu, bookmarks toolbar and unsorted bookmarks) you need to change query parameters:

query.setFolders([
    bookmarksService.bookmarksMenuFolder,
    bookmarksService.toolbarFolder,
    bookmarksService.unfiledBookmarksFolder
], 3);

The other issue is getting childCount property on a nsINavHistoryResultNode object - there is no such property. Before you can access properties of nsINavHistoryContainerResultNode you need to call QueryInterface, either explicitly or implicitly (via instanceof). So I would write:

} else if (node.type == 6 && node instanceof Components.interfaces.nsINavHistoryContainerResultNode) {
    var oldOpen = node.containerOpen;
    node.containerOpen = true;
    browse_bookmark_node(node, array);
    node.containerOpen = oldOpen;
}

Just to save time to anyone who want to get all the bookmarks, do not do query.setFolders([ bookmarksService.bookmarksMenuFolder, bookmarksService.toolbarFolder, bookmarksService.unfiledBookmarksFolder ], 3); as suggested by Wladimir since it WON'T bring you all of the bookmarks but instead do an intersect of the folders and only give u the bookmarks which are placed at all of those folders, as written at Mozilla doc's

You can set multiple folders and the result will be the intersection of all the folders.

( https://developer.mozilla.org/en/Querying_Places )