formidable / classes / helpers / FrmStylesPreviewHelper.php

FrmStylesPreviewHelper.php in Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More 6.12, at classes/helpers/FrmStylesPreviewHelper.php

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1	<?php
2	if ( ! defined( 'ABSPATH' ) ) {
3	die( 'You are not allowed to call this page directly.' );
4	}
5
6	/**
7	* @since 6.0
8	*/
9	class FrmStylesPreviewHelper {
10
11	/**
12	* @var int
13	*/
14	private $form_id;
15
16	/**
17	* This is tracked so we can show a note that the CAPTCHA was turned off.
18	*
19	* @var bool
20	*/
21	private $form_includes_captcha = false;
22
23	/**
24	* Track the field ids with the default label position.
25	* A field with a default label position will have a frm-default-label-position class in the styler preview.
26	* Only fields with this class will change when you update the position setting in the styler.
27	*
28	* @since 6.0.1
29	*
30	* @var array
31	*/
32	private $default_label_position_field_ids;
33
34	/**
35	* @param int\|string $form_id
36	* @return void
37	*/
38	public function __construct( $form_id ) {
39	$this->form_id = (int) $form_id;
40	$this->default_label_position_field_ids = array();
41	}
42
43	/**
44	* Modify form behaviours for the styler preview.
45	*
46	* @since 6.0
47	*
48	* @return void
49	*/
50	public function adjust_form_for_preview() {
51	// Don't bother including the antispam token in the preview as the form isn't submitted.
52	add_filter( 'frm_run_antispam', '__return_false', 99 );
53
54	// We don't need the honeypot in the preview so leave it out.
55	add_filter( 'frm_run_honeypot', '__return_false' );
56	$this->hide_captcha_fields();
57	$this->disable_javascript_validation();
58	$this->add_a_div_class_for_default_label_positions();
59	}
60
61	/**
62	* Add a frm-default-label-position class to any field with a default label position.
63	* A field with a custom label position shouldn't ever change in the styler preview.
64	*
65	* @since 6.0.1
66	* @return void
67	*/
68	private function add_a_div_class_for_default_label_positions() {
69	// Only fields with no label position set hit this filter, so track those for the frm_field_div_classes filter.
70	add_filter(
71	'frm_html_label_position',
72	/**
73	* @param string $position
74	* @param array\|object $field
75	* @return string
76	*/
77	function ( $position, $field ) {
78	if ( is_array( $field ) ) {
79	$this->default_label_position_field_ids[] = (int) $field['id'];
80	}
81	return $position;
82	},
83	10,
84	2
85	);
86
87	add_filter(
88	'frm_field_div_classes',
89	/**
90	* @param string $classes
91	* @param array\|object $field
92	* @return string
93	*/
94	function ( $classes, $field ) {
95	if ( is_array( $field ) && in_array( (int) $field['id'], $this->default_label_position_field_ids, true ) ) {
96	$classes .= ' frm-default-label-position';
97	}
98	return $classes;
99	},
100	10,
101	2
102	);
103	}
104
105	/**
106	* Captcha does not initialize in the preview. Hide it so we don't see the label either.
107	*
108	* @since 6.0
109	*
110	* @return void
111	*/
112	private function hide_captcha_fields() {
113	add_filter(
114	'frm_show_normal_field_type',
115	/**
116	* @param bool $show
117	* @param string $field_type
118	* @param string $target_field_type
119	* @return bool
120	*/
121	function ( $show, $field_type ) {
122	if ( 'captcha' === $field_type ) {
123	$show = false;
124	}
125	return $show;
126	},
127	10,
128	2
129	);
130	}
131
132	/**
133	* Turn off JavaScript validation for the preview.
134	* Without this we hit a "PHP Fatal error: Uncaught Error: Maximum function nesting level of '256' reached" error.
135	* This only happened with specific Look up fields when FrmProLookupFieldsController::get_independent_lookup_field_options is called in Pro.
136	*
137	* @since 6.0
138	*
139	* @return void
140	*/
141	private function disable_javascript_validation() {
142	add_filter(
143	'frm_form_object',
144	/**
145	* @param stdClass\|null $form
146	* @param int $form_id
147	* @return stdClass\|null
148	*/
149	function ( $form ) {
150	if ( is_object( $form ) && is_array( $form->options ) ) {
151	$form->options['js_validate'] = false;
152	}
153	return $form;
154	}
155	);
156	}
157
158	/**
159	* @since 6.0
160	*
161	* @return string
162	*/
163	public function get_html_for_form_preview() {
164	// Force is_admin to false so the "Entry Key" field doesn't render in the preview.
165	add_filter( 'frm_is_admin', '__return_false' );
166
167	$target_form_preview_html = FrmFormsController::show_form( $this->form_id, '', 'auto', 'auto' );
168
169	$this->form_includes_captcha = wp_script_is( 'captcha-api', 'enqueued' );
170	if ( $this->form_includes_captcha ) {
171	// If a form includes a CAPTCHA field, don't try to load the CAPTCHA scripts for the visual styler preview.
172	wp_dequeue_script( 'captcha-api' );
173	}
174
175	// Return the is_admin status.
176	// Otherwise success messages won't use the proper mark up and will appear without the green background and padding.
177	remove_filter( 'frm_is_admin', '__return_false' );
178
179	return $target_form_preview_html;
180	}
181
182	/**
183	* @since 6.0
184	*
185	* @todo Only show the note once for a form per user per month or something.
186	*
187	* @return array<string>
188	*/
189	public function get_notes_for_styler_preview() {
190	$notes = array();
191
192	$fallback_form_note = $this->get_fallback_form_note();
193	if ( is_string( $fallback_form_note ) ) {
194	$notes[] = $fallback_form_note;
195	}
196
197	$frm_settings = FrmAppHelper::get_settings();
198	if ( 'none' === $frm_settings->load_style ) {
199	$notes[] = function () {
200	printf(
201	// translators: %1$s: Anchor tag open, %2$s: Anchor tag close.
202	esc_html__( 'Formidable styles are disabled. This needs to be enabled in %1$sGlobal Settings%2$s.', 'formidable' ),
203	'<a href="' . esc_url( admin_url( 'admin.php?page=formidable-settings' ) ) . '">',
204	'</a>'
205	);
206	};
207	}
208
209	if ( class_exists( 'FrmProStylesController' ) && ! class_exists( 'FrmProStylesPreviewHelper' ) ) {
210	$notes[] = __( 'You are using an outdated version of Formidable Pro. Please update to version 6.0 to get access to all styler features.', 'formidable' );
211	}
212
213	if ( is_callable( 'FrmProStylesController::get_notes_for_styler_preview' ) ) {
214	$notes = array_merge( $notes, FrmProStylesController::get_notes_for_styler_preview() );
215	}
216
217	$disabled_features_note = $this->get_disabled_features_note();
218	if ( is_string( $disabled_features_note ) ) {
219	$notes[] = $disabled_features_note;
220	}
221
222	return $notes;
223	}
224
225	/**
226	* @since 6.0
227	*
228	* @return string
229	*/
230	private function get_disabled_features_note() {
231	return __( 'Not all JavaScript is loaded in this preview. Some features will appear differently on the front end.', 'formidable' );
232	}
233
234	/**
235	* @since 6.0
236	*
237	* @return false\|string
238	*/
239	private function get_fallback_form_note() {
240	if ( ! FrmAppHelper::simple_get( 'form', 'absint' ) ) {
241	return __( 'This form is being previewed because no form was selected. Use the form dropdown to select a new preview target.', 'formidable' );
242	}
243	return false;
244	}
245
246	/**
247	* Get all warnings to display above the visual styler preview.
248	*
249	* @since 6.0
250	*
251	* @param stdClass\|WP_Post $style A new style is not a WP_Post object.
252	* @param WP_Post $default_style
253	* @param string $view Either 'list' or 'edit'.
254	* @return array<string>
255	*/
256	public function get_warnings_for_styler_preview( $style, $default_style, $view ) {
257	$warnings = array();
258
259	if ( 'edit' === $view && $this->should_show_multiple_forms_warning( $style->ID, $default_style->ID ) ) {
260	$warnings[] = __( 'Changes that you will make to this style will apply to every form using this style.', 'formidable' );
261	}
262
263	return $warnings;
264	}
265
266	/**
267	* @since 6.0
268	*
269	* @param int $style_id
270	* @param int $default_style_id
271	* @return bool
272	*/
273	private function should_show_multiple_forms_warning( $style_id, $default_style_id ) {
274	$is_default_style = $style_id === $default_style_id;
275
276	if ( ! $is_default_style ) {
277	// Also check for the conversational default.
278	$conversational_style_id = FrmDb::get_var( 'posts', array( 'post_name' => 'lines-no-boxes' ), 'ID' );
279	if ( $conversational_style_id && (int) $conversational_style_id === $style_id ) {
280	$is_default_style = true;
281	}
282	}
283
284	$form_count = FrmStylesHelper::get_form_count_for_style( $style_id, $is_default_style );
285
286	if ( $form_count <= 1 ) {
287	return false;
288	}
289
290	// Only show the warning once per user per style.
291	$user_id = get_current_user_id();
292	$meta_key = 'frm_dismiss_multiple_forms_warning_' . $style_id;
293	$meta = get_user_meta( $user_id, $meta_key, true );
294
295	if ( $meta ) {
296	return false;
297	}
298
299	add_user_meta( $user_id, $meta_key, 1 );
300	return true;
301	}
302
303	/**
304	* @since 6.0
305	*
306	* @param WP_Styles $styles
307	* @return void
308	*/
309	public static function disable_conflicting_wp_admin_css( $styles ) {
310	if ( ! is_callable( array( $styles, 'remove' ) ) \|\| ! array_key_exists( 'wp-admin', $styles->registered ) ) {
311	return;
312	}
313
314	$styles->remove( 'edit' );
315
316	$wp_admin_dependencies = $styles->registered['wp-admin']->deps;
317	$edit_key = array_search( 'edit', $wp_admin_dependencies );
318	if ( false === $edit_key ) {
319	return;
320	}
321
322	// Remove the edit dependency from wp-admin so it still loads, just without edit.css.
323	self::remove_wp_admin_dependency( $styles, 'edit' );
324	}
325
326	/**
327	* @since 6.0
328	*
329	* @param WP_Styles $styles
330	* @param string $key
331	* @return void
332	*/
333	private static function remove_wp_admin_dependency( $styles, $key ) {
334	$dependencies = $styles->registered['wp-admin']->deps;
335	$index = array_search( $key, $dependencies );
336	if ( false === $index ) {
337	return;
338	}
339
340	unset( $dependencies[ $index ] );
341	$dependencies = array_values( $dependencies );
342
343	$styles->registered['wp-admin']->deps = $dependencies;
344	}
345	}
346