How to collapse (toggle) all bookmark folder?

[Drumbrake]

Is there any way -including extensions- to toggle all bookmark folders in the side bar to collapsed and expand them again ?

[morat]

This is what I do.

Code: Select all

// toggle all tree nodes in the bookmarks sidebar
var browser = document.getElementById("sidebar");
var contentDocument = browser.contentDocument;
var tree = contentDocument.getElementById("bookmarks-view");
if (tree) {
  var view = tree.view;
  if (view.isContainer(0) && !view.isContainerOpen(0)) {
    // expand all tree nodes
    for (var i = 0; i < view.rowCount; i++) {
      if (view.isContainer(i) && !view.isContainerOpen(i)) {
        view.toggleOpenState(i);
      }
    }
  } else {
    // collapse all tree nodes except Bookmarks Menu folder
    for (var i = view.rowCount - 1; i >= 0; i--) {
      var name = view.getCellText(i, tree.columns.getColumnAt(0));
      if (view.isContainer(i) &&
          view.isContainerOpen(i) &&
          name != "Bookmarks Menu") {
        view.toggleOpenState(i);
      }
    }
  }
} else {
  // open bookmarks sidebar
  toggleSidebar("viewBookmarksSidebar");
} 

The code works for extensions that allow you to run javascript with chrome privileges, like PrefBar.

https://addons.mozilla.org/firefox/addon/67148

[Drumbrake]

Thank you so much,this is yet another useful feature (IMHO) that for who knows what reason has never been considered-if I got it right from your last comment,this won't work as bookmarklet:will it also work (aside of PrefBar) if executed in the Error Console (not a fast way to do this for sure) or with Custom Buttons
https://addons.mozilla.org/en-US/firefox/addon/custom-buttons/ ?

[morat]

if executed in the error console

You can run the code in scratchpad in the browser environment.

1. open about:config
2. set devtools.chrome.enabled to true
3. tools > web developer > scratchpad
4. environment > browser
5. edit > paste (i.e. copy and paste code above)
6. execute > run