From ea45c12cb74a60f75018bb6382ee305f721e3924 Mon Sep 17 00:00:00 2001
From: Julien Ducro <julien.ducro@deskpro.com>
Date: Fri, 27 Jul 2018 10:47:14 +0200
Subject: [PATCH] Add async to Multiple DropDown

---
 src/Components/Choices/DropDown.jsx         |  2 +-
 src/Components/Choices/MultipleDropDown.jsx | 62 +++++++++++++--------
 tests/storybook/async_multiple_dropdown.jsx | 41 ++++++++++++++
 tests/storybook/index.js                    |  1 +
 4 files changed, 81 insertions(+), 25 deletions(-)
 create mode 100644 tests/storybook/async_multiple_dropdown.jsx

diff --git a/src/Components/Choices/DropDown.jsx b/src/Components/Choices/DropDown.jsx
index 5a22315c..1bfe8118 100644
--- a/src/Components/Choices/DropDown.jsx
+++ b/src/Components/Choices/DropDown.jsx
@@ -68,7 +68,7 @@ class DropDown extends Field {
         value={this.state.value}
         name={name}
         isClearable={isClearable}
-        onChange={(value, action) => this.handleChange(form, value, action)}
+        onChange={value => this.handleChange(form, value)}
         onBlur={() => form.setFieldTouched(name, true)}
         defaultOptions
         cacheOptions
diff --git a/src/Components/Choices/MultipleDropDown.jsx b/src/Components/Choices/MultipleDropDown.jsx
index 1c7acddf..56aa2de2 100644
--- a/src/Components/Choices/MultipleDropDown.jsx
+++ b/src/Components/Choices/MultipleDropDown.jsx
@@ -4,7 +4,7 @@ import classNames from 'classnames';
 import { css } from 'emotion';
 import { getIn } from 'formik';
 import ReactSelect, { components } from 'react-select';
-
+import AsyncSelect from 'react-select/lib/Async';
 import Field from '../Field';
 
 const SelectContainer = ({ children, ...props }) => (
@@ -59,33 +59,32 @@ const Option = (props) => {
 Option.propTypes = components.Option.propTypes;
 
 class MultipleDropDown extends Field {
+  constructor(props) {
+    super(props);
+    this.state = {
+      value: null
+    };
+  }
+
   handleChange = (form, value) => {
     const { name, handleChange } = this.props;
+    this.setState({
+      value
+    });
     const newValue = value ? value.map(e => e.value) : null;
     form.setFieldValue(name, newValue);
     handleChange(newValue);
   };
 
-  renderCheckbox = (checked, label) => (
-    <div
-      className={classNames('dp-pc_checkbox')}
-    >
-      <span
-        className="dp-pc_checkbox__checkbox"
-      >
-        <input type="checkbox" checked={checked} readOnly />
-        <i />
-        <span className="dp-pc_checkbox__label">
-          {label}
-        </span>
-      </span>
-    </div>
-  );
-
-  renderOption = (option, form) => {
-    const { name } = this.props;
-    const checked = form.values[name].includes(option.value);
-    return this.renderCheckbox(checked, option.label);
+  loadOptions = (form, inputValue) => {
+    const { dataSource, name } = this.props;
+    return dataSource.getOptions(inputValue).then((options) => {
+      const value = options.find(o => o.value === getIn(form.values, name));
+      this.setState({
+        value
+      });
+      return options;
+    });
   };
 
   renderField = (form) => {
@@ -100,16 +99,31 @@ class MultipleDropDown extends Field {
           onBlur={() => form.setFieldTouched(name, true)}
           options={dataSource.getOptions}
           hideSelectedOptions={false}
-          menuIsOpen
           components={{ Option, SelectContainer }}
-          optionRenderer={option => this.renderOption(option, form)}
           classNamePrefix="react-select"
           isMulti
           {...props}
         />
       );
     }
-    return null;
+
+    return (
+      <AsyncSelect
+        value={this.state.value}
+        name={name}
+        isClearable={false}
+        onChange={value => this.handleChange(form, value)}
+        onBlur={() => form.setFieldTouched(name, true)}
+        hideSelectedOptions={false}
+        components={{ Option, SelectContainer }}
+        defaultOptions
+        cacheOptions
+        loadOptions={inputValue => this.loadOptions(form, inputValue)}
+        classNamePrefix="react-select"
+        isMulti
+        {...props}
+      />
+    );
   }
 }
 
diff --git a/tests/storybook/async_multiple_dropdown.jsx b/tests/storybook/async_multiple_dropdown.jsx
new file mode 100644
index 00000000..8d02dbb3
--- /dev/null
+++ b/tests/storybook/async_multiple_dropdown.jsx
@@ -0,0 +1,41 @@
+import React from 'react';
+import { storiesOf } from '@storybook/react';
+import { action } from '@storybook/addon-actions';
+import { Formik } from 'formik';
+import { Form, MultipleDropDown, Submit } from '../../src/Components';
+
+const options = [
+  { value: 'bacon', label: 'Bacon' },
+  { value: 'cheese', label: 'Cheese' },
+  { value: 'jalapenos', label: 'Jalapeños' },
+  { value: 'mushrooms', label: 'Mushrooms' },
+  { value: 'onions', label: 'Onions' },
+  { value: 'pickles', label: 'Pickles' },
+];
+
+const fakeAPI = (filter, delay, value) => new Promise((resolve) => {
+  setTimeout(() => {
+    const regexp = new RegExp(filter.toLowerCase());
+    const result = value.filter(o => o.label.toLowerCase().match(regexp) || filter === '');
+    resolve(result);
+  }, delay);
+});
+
+storiesOf('Choices', module)
+  .add('Async MultipleDropdown', () => (
+    <Formik
+      initialValues={{ filling: 'bacon' }}
+      onSubmit={action('submit')}
+      render={() => (
+        <Form>
+          <MultipleDropDown
+            name="filling"
+            dataSource={{ getOptions: filter => fakeAPI(filter, 300, options) }}
+            label="Filling"
+            multiple
+          />
+          <Submit>Submit</Submit>
+        </Form>
+      )}
+    />
+  ));
diff --git a/tests/storybook/index.js b/tests/storybook/index.js
index 8402eefc..de396aff 100644
--- a/tests/storybook/index.js
+++ b/tests/storybook/index.js
@@ -1,6 +1,7 @@
 import '../../src/style.css';
 
 import './async_dropdown';
+import './async_multiple_dropdown';
 import './form';
 import './checkboxes';
 import './datepicker';