Stop searching for existing series when view is changed

UI/AddSeries/Existing/AddExistingSeriesCollectionView.js

@@ -0,0 +1,45 @@
+'use strict';
+define(
+    [
+        'marionette',
+        'AddSeries/AddSeriesView',
+        'AddSeries/Existing/UnmappedFolderCollection'
+    ], function (Marionette, AddSeriesView, UnmappedFolderCollection) {
+
+        return Marionette.CollectionView.extend({
+
+            itemView: AddSeriesView,
+
+            initialize: function () {
+                this.collection = new UnmappedFolderCollection();
+                this.collection.importItems(this.model);
+            },
+
+            showCollection: function () {
+                this._showAndSearch(0);
+            },
+
+            _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);
+                            }
+                        });
+                }
+            },
+
+            itemViewOptions: {
+                isExisting: true
+            }
+
+        });
+    });