git.scottworley.com Git - roundrobintaborder/blob - extension.js

   1 /* roundrobintaborder: Make the window switch order round-robin instead of most-recently-used
   2  * Copyright (C) 2019 Scott Worley
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 let oldGetTabList;
  20
  21 // We sort windows as if lexicographically by the key
  22 //     [is_smaller_than_or_equal_to_current_window_id, id].
  23 // This causes the current window to have the key
  24 //     [1, <largest id of all windows that have 1 in the first key slot>]
  25 // and thus to always sort to the end of the list.
  26 function roundRobinComparitor(currentWindow, a, b) {
  27     const aid = a.get_id(), alec = aid <= currentWindow;
  28     const bid = b.get_id(), blec = bid <= currentWindow;
  29     if (alec !== blec) return blec - alec;
  30     return bid - aid;
  31 }
  32
  33 function init() {
  34     oldGetTabList = global.display.get_tab_list;
  35 }
  36
  37 function enable() {
  38     global.display.get_tab_list = function(type, workspace) {
  39         const ret = oldGetTabList.call(this, type, workspace);
  40         const currentWindow = global.display.get_focus_window().get_id();
  41         ret.sort((a, b) => roundRobinComparitor(currentWindow, a, b));
  42         return ret;
  43     };
  44 }
  45
  46 function disable() {
  47     global.display.get_tab_list = oldGetTabList;
  48 }
  49