load-window-positions

#! /usr/bin/env node

/* 
 * Copyright (C) 2015 Rafael Vega <contacto@rafaelvega.co> 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

// Libraries
var shell = require('child_process');
var fs = require('fs');

// Config variables
var window_set_geometry_command = 'wmctrl -i -r "{1}" -e "{2}"';
var window_set_state_command = 'wmctrl -i -r "{1}" -b add,{2}';
var window_minimize_command = 'wmctrl -i -Y "{1}"';

function parse_parameters(){
   var params = {
      input_filename : process.env['HOME']+'/.config/window_positions/window_positions.json'
   };

   if(typeof(process.argv[2]) != 'undefined'){
      params.input_filename = process.argv[2];
   }

   return params;
}

function set_windows_info(windows_info){
   windows_info.forEach(function(window){
      // Maybe this magic_number comes from the _NET_WM_OPAQUE_REGION
      // window property (see get-geometries script)?
      var magic_number = 6; 
      var y = window.y - 2*(window.decorations.top+window.decorations.bottom) - magic_number;
      var x = window.x + window.decorations.left - 2*magic_number;
      var w = window.w;
      var h = window.h
      var geometry = '0,' + x + ',' + y + ',' + w + ',' + h;
      var command = window_set_geometry_command.replace('{1}', window.wid).replace('{2}',geometry);
      shell.exec(command, function(err, stdout, stderr){});

      window.states.forEach(function(state){
         command = window_set_state_command.replace('{1}', window.wid).replace('{2}', state);
         shell.exec(command, function(err, stdout, stderr){});

         if(state=='hidden'){
            command = window_minimize_command.replace('{1}', window.wid);
            shell.exec(command, function(err, stdout, stderr){});
         }
      });
   });
}

function read_file(params){
   var windows_info = [];
   try{
      windows_info = JSON.parse(fs.readFileSync(params.input_filename));
   }
   catch(e){
      console.error(e.message);
   }
   return windows_info;
}

var params = parse_parameters();
var windows_info = read_file(params);
set_windows_info(windows_info);


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