kendo-backbone/lib/kendo.backbone.collection.js

Bind a Backbone.Collection to a Kendo DataSource

// Kendo-Backbone Collection
// -------------------------
// 
// Wrap a Backbone.Collection in a kendo.data.ObservableArray
var Model = kendo.data.Model,
ObservableArray = kendo.data.ObservableArray;

function wrapBackboneCollection(model) {
  return ObservableArray.extend({
    init: function(collection) {
      ObservableArray.fn.init.call(this, collection.models, model);

      this.collection = collection;
    },

    splice: function(index, howMany) {
      var itemsToInsert, removedItemx, idx, length;

      itemsToInsert = Array.prototype.slice.call(arguments, 2);

      var removedItems = kendo.data.ObservableArray.fn.splice.apply(this, arguments);

      if (removedItems.length) {
        for (idx = 0, length = removedItems.length; idx < length; idx++) {
          this.collection.remove(removedItems[idx].backbone);
        }
      }

      if (itemsToInsert.length) {
        for (idx = 0, length = itemsToInsert.length; idx < length; idx++) {
          this.collection.unshift(itemsToInsert[idx].backbone);
        }
      }

      return removedItems;
    }
  });
}

module.exports = wrapBackboneCollection;