h || this.inQuickFind) {
      return this.FindBarContent.onKeypress(event);
    }

    if (event.charCode && this.shouldFastFind(event.target)) {
      let key = String.fromCharCode(event.charCode);
      if ((key == "/" || key == "'") && FindBarChild.manualFAYT) {
        return this.FindBarContent.startQuickFind(event);
      }
      if (key != " " && FindBarChild.findAsYouType) {
        return this.FindBarContent.startQuickFind(event, true);
      }
    }
    return null;
  }

  /**
   * Return true if we should FAYT for this node:
   *
   * @param elt
   *        The element that is focused
   */
  shouldFastFind(elt) {
    if (elt) {
      let win = elt.ownerGlobal;
      if (win.HTMLInputElement.isInstance(elt) && elt.mozIsTextField(false)) {
        return false;
      }

      if (elt.isContentEditable || win.document.designMode == "on") {
        return false;
      }

      if (
        win.HTMLTextAreaElement.isInstance(elt) ||
        win.HTMLSelectElement.isInstance(elt) ||
        win.HTMLObjectElement.isInstance(elt) ||
        win.HTMLEmbedElement.isInstance(elt)
      ) {
        return false;
      }

      if (win.XULFrameElement.isInstance(elt)) {
        // If we're targeting an embedded XULFrameElement
        // (e.g. about:addons extensions inline options page), do not activate
        // fast find.
        return false;
      }
    }

    return true;
  }
}

XPCOMUtils.defineLazyPreferenceGetter(
  FindBarChild,
  "findAsYouType",
  "accessibility.typeaheadfind"
);
XPCOMUtils.defineLazyPreferenceGetter(
  FindBarChild,
  "manualFAYT",
  "accessibility.typeaheadfind.manual"
);
PK