Sonarr/src/UI/AddSeries/Existing/AddExistingSeriesCollectionView.js

'use strict';
define(
    [
        'marionette',
        'AddSeries/AddSeriesView',
        'AddSeries/Existing/UnmappedFolderCollection'
    ], function (Marionette, AddSeriesView, UnmappedFolderCollection) {

        return Marionette.CompositeView.extend({

            itemView         : AddSeriesView,
            itemViewContainer: '.x-loading-folders',
            template         : 'AddSeries/Existing/AddExistingSeriesCollectionViewTemplate',

            ui: {
                loadingFolders: '.x-loading-folders'
            },

            initialize: function () {
                this.collection = new UnmappedFolderCollection();
                this.collection.importItems(this.model);
            },

            showCollection: function () {
                this._showAndSearch(0);
            },

            appendHtml: function(collectionView, itemView, index){
                collectionView.ui.loadingFolders.before(itemView.el);
            },

            _showAndSearch: function (index) {
                var self = this;
                var model = this.collection.at(index);

                if (model) {
                    var currentIndex = index;
                    var folderName = model.get('folder').name;
                    this.addItemView(model, this.getItemView(), index);
                    this.children.findByModel(model)
                        .search({term: folderName})
                        .always(function () {
                            if (!self.isClosed) {
                                self._showAndSearch(currentIndex + 1);
                            }
                        });
                }

                else {
                    this.ui.loadingFolders.hide();
                }
            },

            itemViewOptions: {
                isExisting: true
            }

        });
    });