null null 0 false return Components.interfaces.nsIAccessibleProvider.XULToolbar; null null try { Components.utils.import("resource://gre/modules/WindowDraggingUtils.jsm"); let draggableThis = new WindowDraggingElement(this, window); draggableThis.mouseDownCheck = function(e) { return !this.parentNode.customizing; // Don't move while customizing. } } catch (e) {} false null null this._updateStatusText(event.target.statusText); this._updateStatusText(""); return Components.interfaces.nsIAccessibleProvider.XULToolbarSeparator;