beta test: added quick search box for customers, projects and activities (#392)

src/Form/Extension/EnhancedChoiceTypeExtension.php

@@ -0,0 +1,65 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Form\Extension;
+
+use Symfony\Bridge\Doctrine\Form\Type\EntityType;
+use Symfony\Component\Form\AbstractTypeExtension;
+use Symfony\Component\Form\FormInterface;
+use Symfony\Component\Form\FormView;
+
+/**
+ * Converts normal select boxes into javascript enhanced versions.
+ */
+class EnhancedChoiceTypeExtension extends AbstractTypeExtension
+{
+    public const TYPE_SELECTPICKER = 'selectpicker';
+
+    /**
+     * @var string|null
+     */
+    protected $type = null;
+
+    /**
+     * @param null|string $type
+     */
+    public function __construct(?string $type)
+    {
+        $this->type = $type;
+    }
+
+    /**
+     * @return string
+     */
+    public function getExtendedType()
+    {
+        return EntityType::class;
+    }
+
+    /**
+     * @param FormView $view
+     * @param FormInterface $form
+     * @param array $options
+     */
+    public function buildView(FormView $view, FormInterface $form, array $options)
+    {
+        if ($this->type !== self::TYPE_SELECTPICKER) {
+            return;
+        }
+
+        if (!isset($view->vars['attr'])) {
+            $view->vars['attr'] = [];
+        }
+
+        $view->vars['attr'] = array_merge(
+            $view->vars['attr'],
+            ['class' => 'selectpicker', 'data-live-search' => true, 'data-width' => '100%']
+        );
+    }
+}