1 files changed, 32 insertions, 0 deletions
diff --git a/modules/book/book.js b/modules/book/book.js
new file mode 100644
index 000000000..13ea71883
--- /dev/null
+++ b/modules/book/book.js
@@ -0,0 +1,32 @@
+// $Id$
+
+Drupal.behaviors.bookSelect = function(context) {
+   // This behavior attaches by ID, so is only valid once on a page.
+  if ($('#edit-book-bid.book-select-processed').size()) {
+    return;
+  }
+  // Hide the button in the node form, since it's not needed when JS is enabled.
+  $('#edit-book-pick-book').css('display', 'none');
+
+  // Binds a function to the keyup and change actions of the book select to
+  // retrieve parent options. Mark as processed so this binding is only done once.
+  $('#edit-book-bid')
+    .keyup(Drupal.bookFillSelect)
+    .change(Drupal.bookFillSelect)
+    .addClass('book-select-processed');
+}
+
+// This function passes the form information and the book ID to a Drupal callback
+// and retrieves a parent select with changed options to replace the one in the form.
+Drupal.bookFillSelect = function() {
+  // Create a progress bar and substitute it for the parent select.
+  pb = new Drupal.progressBar('book_progress');
+  pb.setProgress(-1, Drupal.t('Updating parents...'));
+  $('#edit-book-plid-wrapper').html(pb.element);
+
+  $.get(Drupal.settings.book.formCallback +'/'+ $('#'+ Drupal.settings.book.formId +' input[@name=form_build_id]').val() +'/'+ $('#edit-book-bid').val(), {}, function(data) {
+    parsedData = Drupal.parseJson(data);
+    // Insert the new select, and remove the progress bar.
+    $('#edit-book-plid-wrapper').after(parsedData['book']).remove();
+  });
+};