File form-bundle/src/Form/Type/TypeAheadType.php

1:	<?php
2:	namespace TIC\FormBundle\Form\Type;
3:
4:	use TIC\FormBundle\Base\TICWidgetType as BaseType;
5:
6:	use Symfony\Component\Form\FormInterface;
7:	use Symfony\Component\Form\FormView;
8:	use Symfony\Component\OptionsResolver\OptionsResolver;
9:	use Symfony\Component\OptionsResolver\Options;
10:
11:	/**
12:	* Saisie d'une valeur textuelle (avec auto-complétion).
13:	* Intégration du composant JS twitter typeahead
14:	*/
15:	class TypeAheadType extends BaseType {
16:
17:	protected $form_alias = 'tic_typeahead';
18:	protected $form_parent = null;
19:
20:	protected $default_prefix = '<tag>';
21:	protected $default_suffix = '<tag>';
22:
23:
24:	/**
25:	* {@inheritdoc}
26:	*/
27:	public function configureOptions(OptionsResolver $resolver):void {
28:	parent::configureOptions($resolver);
29:
30:	$resolver->setDefaults(array(
31:	'compound' => false,
32:	'choices' => array(), // liste des choix à l'initialisation du widget
33:	'prefetch' => null, // nom de route pour la requête Ajax prefetch de Bloodhound
34:	'remote' => null, // nom de route pour la requête Ajax remote de Bloodhound
35:	'bloodhound' => false, // utilisation du moteur de suggestion Bloodhound (auto si prefetch/remote)
36:	'minLength' => 1, // nombre de caractères à saisir avant affichage des suggestions
37:	'maxDisplay' => 5, // nombre maximum de suggestions affichées en dropdown
38:	));
39:
40:	$resolver->setAllowedTypes('choices', array('array', 'callable'));
41:	$resolver->setAllowedTypes('prefetch', array('null', 'string'));
42:	$resolver->setAllowedTypes('remote', array('null', 'string'));
43:	$resolver->setAllowedTypes('bloodhound', array('bool'));
44:	$resolver->setAllowedTypes('minLength', array('int'));
45:	$resolver->setAllowedTypes('maxDisplay', array('int', 'bool'));
46:
47:	$resolver->setNormalizer('choices', function (Options $options, $choices) {
48:	return is_callable($choices) ? call_user_func($choices, $options) : $choices;
49:	});
50:	}
51:
52:
53:	/**
54:	* {@inheritdoc}
55:	*/
56:	public function buildView(FormView $view, FormInterface $form, array $options):void {
57:	parent::buildView($view, $form, $options);
58:
59:	// spécification de la taille du widget (ajout de classe bootstrap)
60:	$this->setViewInputSizing($view);
61:
62:	// les recherches ajax (prefetch / remote) requiert le moteur bloodhound
63:	if (! empty($options['prefetch'])) $options['bloodhound'] = true;
64:	if (! empty($options['remote'])) $options['bloodhound'] = true;
65:
66:	$view->vars['bloodhound'] = $options['bloodhound'];
67:	$view->vars['choices'] = $options['choices'];
68:	$view->vars['prefetch'] = $options['prefetch'];
69:	$view->vars['remote'] = $options['remote'];
70:	$view->vars['minLength'] = $options['minLength'];
71:	$view->vars['maxDisplay'] = $options['maxDisplay'];
72:	}
73:
74:
75:	}
76:

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