shared/burst/isolate-burst.js

   1 'use strict';
   2
   3 /**
   4  * Isolate a burst, given a model and a list of models
   5  */
   6 function findBurstModels(_, collection, model) {
   7   var startIndex = _.indexOf(collection, model);
   8   var endIndex = startIndex + 1;
   9   var result = [model];
  10   var i;
  11
  12   if (startIndex < 0) return result;
  13
  14   if (!_.get(model, 'burstStart')) {
  15     startIndex--;
  16
  17     i = _.at(collection, startIndex);
  18     while (startIndex >= 0) {
  19       result.unshift(i);
  20       if (_.get(i, 'burstStart')) break; // Quit the loop
  21       startIndex--;
  22
  23       if (startIndex >= 0) {
  24         i = _.at(collection, startIndex);
  25       }
  26     }
  27   }
  28
  29   while (
  30     endIndex < collection.length &&
  31     (i = _.at(collection, endIndex)) &&
  32     !_.get(i, 'burstStart')
  33   ) {
  34     result.push(i);
  35     endIndex++;
  36   }
  37
  38   return result;
  39 }
  40
  41 module.exports = findBurstModels;