Open-ILS/xul/staff_client/chrome/content/evergreen/util/exec.js

   1 dump('entering util/exec.js\n');
   2
   3 if (typeof util == 'undefined') var util = {};
   4 util.exec = function() {
   5         JSAN.use('util.error');
   6         this.error = new util.error();
   7
   8         return this;
   9 };
  10
  11 util.exec.prototype = {
  12         // This executes a series of functions, but tries to give other events/functions a chance to
  13         // execute between each one.
  14         'chain' : function () {
  15                 var args = [];
  16                 var obj = this;
  17                 for (var i = 0; i < arguments.length; i++) {
  18                         var arg = arguments[i];
  19                         switch(arg.constructor.name) {
  20                                 case 'Function' :
  21                                         args.push( arg );
  22                                 break;
  23                                 case 'Array' :
  24                                         for (var j = 0; j < arg.length; j++) {
  25                                                 if (typeof arg[j] == 'function') args.push( arg[j] );
  26                                         }
  27                                 break;
  28                                 case 'Object' :
  29                                         for (var j in arg) {
  30                                                 if (typeof arg[j] == 'function') args.push( arg[j] );
  31                                         }
  32                                 break;
  33                         }
  34                 }
  35                 if (args.length > 0) setTimeout(
  36                         function() {
  37                                 try {
  38                                         args[0]();
  39                                         if (args.length > 1 ) obj.chain( args.slice(1) );
  40                                 } catch(E) {
  41                                         this.error('D_EXEC','util.exec.chain broken: ' + E);
  42                                         if (typeof obj.on_error == 'function') {
  43                                                 obj.on_error(E);
  44                                         }
  45                                 }
  46                         }, 0
  47                 );
  48         }
  49 }
  50
  51 dump('exiting util/exec.js\n');