1 files changed, 68 insertions, 0 deletions
diff --git a/app/assets/javascripts/filtered_search/dropdown_ajax_filter.js b/app/assets/javascripts/filtered_search/dropdown_ajax_filter.js
new file mode 100644
index 00000000000..b27bb63c220
--- /dev/null
+++ b/app/assets/javascripts/filtered_search/dropdown_ajax_filter.js
@@ -0,0 +1,68 @@
+import createFlash from '../flash';
+import AjaxFilter from '../droplab/plugins/ajax_filter';
+import FilteredSearchDropdown from './filtered_search_dropdown';
+import DropdownUtils from './dropdown_utils';
+import FilteredSearchTokenizer from './filtered_search_tokenizer';
+import { __ } from '~/locale';
+
+export default class DropdownAjaxFilter extends FilteredSearchDropdown {
+  constructor(options = {}) {
+    const { tokenKeys, endpoint, symbol } = options;
+
+    super(options);
+
+    this.tokenKeys = tokenKeys;
+    this.endpoint = endpoint;
+    this.symbol = symbol;
+
+    this.config = {
+      AjaxFilter: this.ajaxFilterConfig(),
+    };
+  }
+
+  ajaxFilterConfig() {
+    return {
+      endpoint: `${gon.relative_url_root || ''}${this.endpoint}`,
+      searchKey: 'search',
+      searchValueFunction: this.getSearchInput.bind(this),
+      loadingTemplate: this.loadingTemplate,
+      onError() {
+        createFlash(__('An error occurred fetching the dropdown data.'));
+      },
+    };
+  }
+
+  itemClicked(e) {
+    super.itemClicked(e, selected =>
+      selected.querySelector('.dropdown-light-content').innerText.trim(),
+    );
+  }
+
+  renderContent(forceShowList = false) {
+    this.droplab.changeHookList(this.hookId, this.dropdown, [AjaxFilter], this.config);
+    super.renderContent(forceShowList);
+  }
+
+  getSearchInput() {
+    const query = DropdownUtils.getSearchInput(this.input);
+    const { lastToken } = FilteredSearchTokenizer.processTokens(query, this.tokenKeys.get());
+
+    let value = lastToken || '';
+
+    if (value[0] === this.symbol) {
+      value = value.slice(1);
+    }
+
+    // Removes the first character if it is a quotation so that we can search
+    // with multiple words
+    if (value[0] === '"' || value[0] === "'") {
+      value = value.slice(1);
+    }
+
+    return value;
+  }
+
+  init() {
+    this.droplab.addHook(this.input, this.dropdown, [AjaxFilter], this.config).init();
+  }
+}