vikbooking / libraries / adapter / module / widget.php

widget.php in VikBooking Hotel Booking Engine & PMS 1.6.4, at libraries/adapter/module/widget.php

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1	<?php
2	/**
3	* @package VikWP - Libraries
4	* @subpackage adapter.module
5	* @author E4J s.r.l.
6	* @copyright Copyright (C) 2021 E4J s.r.l. All Rights Reserved.
7	* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
8	* @link https://vikwp.com
9	*/
10
11	// No direct access
12	defined('ABSPATH') or die('No script kiddies please!');
13
14	JLoader::import('adapter.form.form');
15
16	/**
17	* Adapter class to extend WP widget functionalities.
18	*
19	* @see WP_Widget
20	* @since 10.0
21	*/
22	class JWidget extends WP_Widget
23	{
24	/**
25	* Absolute module path.
26	*
27	* @var string
28	*/
29	protected $_path;
30
31	/**
32	* Internal ID.
33	*
34	* @var string
35	*/
36	protected $_id;
37
38	/**
39	* Widget form data.
40	*
41	* @var JForm
42	*/
43	protected $_form = null;
44
45	/**
46	* The name of the plugin that owns the module.
47	*
48	* @var string
49	*/
50	protected $_option = null;
51
52	/**
53	* Whether or not the widget has been registered yet.
54	*
55	* @var boolean
56	* @since 10.1.38
57	*/
58	protected $registered = false;
59
60	/**
61	* Class constructor.
62	*
63	* @param string $path The widget absolute path.
64	*
65	* @uses loadLanguage()
66	* @uses loadXml()
67	*/
68	public function __construct($path)
69	{
70	// widget ID
71	$id = basename($path);
72
73	$this->_path = $path;
74	$this->_id = $id;
75
76	/**
77	* Extract component name from path.
78	*
79	* @since 10.1.20
80	*/
81	if (preg_match("/plugins[\/\\\\]([a-z0-9_]+)[\/\\\\]modules/i", $this->_path, $match))
82	{
83	$this->_option = end($match);
84	}
85
86	// load text domain
87	$this->loadLanguage($path, $id);
88
89	/**
90	* @note: translations will be available only from here.
91	*/
92
93	// load widget data from XML
94	$data = $this->loadXml($path, $id);
95
96	// translate widget name
97	$name = JText::translate((string) $data->name);
98
99	// build arguments
100	$args = array();
101	$args['description'] = JText::translate((string) $data->description);
102	// $args['version'] = $data->version;
103
104	/**
105	* Since the widget description is displayed by escaping HTML tags,
106	* we should strip them in order to display a plain text.
107	*
108	* @since 10.1.21
109	*/
110	$args['description'] = strip_tags($args['description']);
111
112	parent::__construct($id, $name, $args);
113
114	/**
115	* Add support for jQuery in page head every time
116	* a widget is instantiated. Proceed only in case the
117	* headers haven't been sent yet.
118	*
119	* @since 10.1.22
120	*/
121	if (!headers_sent())
122	{
123	add_filter('wp_enqueue_scripts', function()
124	{
125	wp_enqueue_script('jquery', null, array(), false, false);
126	});
127	}
128	}
129
130	/**
131	* Front-end display of widget.
132	*
133	* @param array $args Widget arguments.
134	* @param array $config Saved values from database.
135	*
136	* @return void
137	*/
138	public function widget($args, $config)
139	{
140	// make the module helper accessible
141	JLoader::import('adapter.module.helper');
142	JModuleHelper::setPath($this->_path);
143
144	/**
145	* Include system.js file to support JFormValidator.
146	*
147	* @todo Check whether this callback is actually needed.
148	* The comment below mentions about the support for
149	* the validator, but it shouldn't be used in the
150	* front-end. In case the system.js file is required
151	* we could consider to load Bootstrap only in case
152	* we are in the site section.
153	*/
154	JHtml::fetch('system.js');
155
156	/**
157	* Added support for module class suffix.
158	*
159	* @since 10.1.21
160	*/
161	if (!empty($config['moduleclass_sfx']))
162	{
163	// extract class from wrapper
164	if (preg_match("/class=\"([a-z0-9_\-\s]*)\"/i", $args['before_widget'], $match))
165	{
166	// replace class attribute with previous classes and the custom suffix
167	$args['before_widget'] = str_replace($match[0], 'class="' . $match[1] . ' ' . $config['moduleclass_sfx'] . '"', $args['before_widget']);
168	}
169	}
170
171	// begin widget
172	echo $args['before_widget'];
173
174	// display the title if set
175	if (!empty($config['title']))
176	{
177	echo $args['before_title'] . apply_filters('widget_title', $config['title']) . $args['after_title'];
178	}
179
180	$layout = $this->_path . DIRECTORY_SEPARATOR . $this->_id . '.php';
181
182	// check if the widget owns a layout
183	if (!is_file($layout))
184	{
185	return;
186	}
187
188	// wrap the $config in a registry
189	$params = new JObject($config);
190
191	/**
192	* Create $module object for accessing the widget ID.
193	*
194	* @since 10.1.30
195	*/
196	$module = new stdClass;
197	$module->id = $this->number;
198
199	/**
200	* Plugins can manipulate the configuration of the widget at runtime.
201	* Fires before dispatching the widget in the front-end.
202	*
203	* @param string $id The widget ID (path name).
204	* @param JObject &$params The widget configuration registry.
205	*
206	* @since 10.1.28
207	*/
208	do_action_ref_array('vik_widget_before_dispatch_site', array($this->_id, &$params));
209
210	// start buffer
211	ob_start();
212	// include layout file
213	include $layout;
214	// get contents
215	$html = ob_get_contents();
216	// clear buffer
217	ob_end_clean();
218
219	/**
220	* Plugins can manipulate here the fetched HTML of the widget.
221	* Fires before displaying the HTML of the widget in the front-end.
222	*
223	* @param string $id The widget ID (path name).
224	* @param string &$html The HTML of the widget to display.
225	*
226	* @since 10.1.28
227	*/
228	do_action_ref_array('vik_widget_after_dispatch_site', array($this->_id, &$html));
229
230	// display the widget HTML
231	echo $html;
232
233	// terminate widget
234	echo $args['after_widget'];
235
236	// print JSON configuration
237	JHtml::fetch('behavior.core');
238
239	// add support for Joomla JS variable
240	JFactory::getDocument()->addScriptDeclaration(
241	<<<JS
242	if (typeof Joomla === 'undefined') {
243	var Joomla = new JoomlaCore();
244	} else {
245	// reload options
246	JoomlaCore.loadOptions();
247	}
248	JS
249	);
250	}
251
252	/**
253	* Loads widget text domain.
254	*
255	* @param string $path The widget path.
256	* @param string $id The domain name.
257	*
258	* @return void
259	*/
260	private function loadLanguage($path, $id)
261	{
262	// init language
263	$lang = JFactory::getLanguage();
264
265	// search for a language handler (/language/handler.php)
266	$handler = $path . DIRECTORY_SEPARATOR . 'language' . DIRECTORY_SEPARATOR . 'handler.php';
267
268	if (!is_file($handler))
269	{
270	/**
271	* Try also to search within "languages" folder.
272	*
273	* @since 10.1.21
274	*/
275	$handler = $path . DIRECTORY_SEPARATOR . 'languages' . DIRECTORY_SEPARATOR . 'handler.php';
276	}
277
278	if (is_file($handler))
279	{
280	// attach handler
281	$lang->attachHandler($handler, $id);
282	}
283
284	/**
285	* @since 10.0.1 It is no more needed to load the language
286	* file (.mo) of the widget as all the translations
287	* are contained within the main language file
288	* of the plugin.
289	*/
290	}
291
292	/**
293	* Loads widget data from the XML installation file.
294	*
295	* @param string $path The widget path.
296	* @param string $id The widget name.
297	*
298	* @return object The XML data.
299	*/
300	private function loadXml($path, $id)
301	{
302	$file = $path . DIRECTORY_SEPARATOR . $id . '.xml';
303
304	// make sure the installation file exists
305	if (!is_file($file))
306	{
307	throw new Exception('Missing installation file [' . $id . '.xml].', 404);
308	}
309
310	// load form data
311	$this->_form = JForm::getInstance($id, $file, array('client' => $this->_option));
312
313	// get XML element
314	$xml = $this->_form->getXml();
315
316	$data = new stdClass;
317
318	// iterate the args and assign them to the $data object
319	foreach (array('name', 'description') as $k)
320	{
321	$data->{$k} = (string) $xml->{$k};
322	}
323
324	return $data;
325	}
326
327	/**
328	* Back-end widget form.
329	*
330	* @param array $instance Previously saved values from database.
331	*
332	* @return void
333	*/
334	public function form($instance)
335	{
336	// get form fields
337	$fields = $this->_form->getFields();
338
339	/**
340	* Add support for title field by creating a custom XML field,
341	* only if the XML of the module doesn't declare it.
342	*
343	* @since 10.1.21
344	*/
345	if (!$this->_form->getField('title'))
346	{
347	// create title field
348	$title = simplexml_load_string('<field name="title" type="text" default="" label="TITLE" />');
349	// push title at the beginning of the list
350	array_unshift($fields, $title);
351	}
352
353	/**
354	* Filter the fields by removing useless settings.
355	*
356	* @since 10.1.31
357	*/
358	$fields = array_filter($fields, function($field)
359	{
360	// exclude field in case it starts with "loadjquery"
361	return preg_match("/^loadjquery/", (string) $field->attributes()->name) == false;
362	});
363
364	// create layout file
365	$file = new JLayoutFile('html.widget.fieldset.open');
366
367	if ($this->_option)
368	{
369	// we found an option, add an include path to make sure layouts are accessible
370	$file->addIncludePath(implode(DIRECTORY_SEPARATOR, array(WP_PLUGIN_DIR, $this->_option, 'libraries')));
371	}
372
373	// open fieldset
374	echo $file->render();
375
376	foreach ($fields as $field)
377	{
378	$attrs = $field->attributes();
379	$name = (string) $attrs->name;
380
381	$data = array();
382	$data['id'] = $this->get_field_id($name);
383	$data['label'] = (string) $attrs->label;
384	$data['description'] = (string) $attrs->description;
385	$data['name'] = $this->get_field_name($name);
386	$data['required'] = ((string) $attrs->required) === 'true';
387
388	/**
389	* Open control only in case the input shouldn't be hidden.
390	*
391	* @since 10.1.21
392	*/
393	if ($attrs->type != 'hidden' && $attrs->type != 'spacer' && empty($attrs->hidden))
394	{
395	// open control
396	$file->setLayoutId('html.widget.control.open');
397	echo $file->render($data);
398	}
399
400	if (isset($instance[$name]))
401	{
402	$data['value'] = $instance[$name];
403	}
404
405	// attach module path (useful to obtain the available layouts)
406	$data['modpath'] = $this->_path;
407	$data['modowner'] = $this->_option;
408
409	// obtain field class and display input layout
410	echo $this->_form->renderField($field, $data);
411
412	/**
413	* Close control only in case the input shouldn't be hidden.
414	*
415	* @since 10.1.21
416	*/
417	if ($attrs->type != 'hidden' && $attrs->type != 'spacer' && empty($attrs->hidden))
418	{
419	// close control
420	$file->setLayoutId('html.widget.control.close');
421	echo $file->render();
422	}
423	}
424
425	// close fieldset
426	$file->setLayoutId('html.widget.fieldset.close');
427	echo $file->render();
428
429	// include form scripts
430	// $this->useScript();
431	}
432
433	/**
434	* Includes the scripts used by the form.
435	*
436	* @return void
437	*/
438	protected function useScript()
439	{
440	if (wp_doing_ajax())
441	{
442	return;
443	}
444
445	$document = JFactory::getDocument();
446
447	/**
448	* Include system.js file to support JFormValidator.
449	*
450	* Since WP 5.9, the widgets resources must be loaded through the
451	* _register_one method, which seems to be invoked on every page.
452	* So, we should load them only if we are under widgets.php.
453	*/
454	global $pagenow;
455	if ($pagenow === 'widgets.php')
456	{
457	JHtml::fetch('system.js');
458	}
459
460	JHtml::fetch('formbehavior.chosen');
461
462	static $loaded = 0;
463
464	// load only once
465	if (!$loaded)
466	{
467	// override getLabel() method to attach invalid
468	// class to the correct form structure
469	$document->addScriptDeclaration(
470	<<<JS
471	if (typeof JFormValidator !== 'undefined') {
472	JFormValidator.prototype.getLabel = function(input) {
473	var name = jQuery(input).attr('name');
474
475	if (this.labels.hasOwnProperty(name)) {
476	return jQuery(this.labels[name]);
477	}
478
479	return jQuery(input).parent().find('label').first();
480	}
481	}
482	JS
483	);
484	}
485
486	// load form validation
487	$document->addScriptDeclaration(
488	<<<JS
489	if (typeof VIK_WIDGET_SAVE_LOOKUP === 'undefined') {
490	var VIK_WIDGET_SAVE_LOOKUP = {};
491	}
492
493	(function($) {
494	$(document).on('widget-added', function(event, control) {
495	registerWidgetScripts($(control).find('form'));
496	});
497
498	function registerWidgetScripts(form) {
499	if (!form) {
500	// if the form was not provided, find it using the widget ID (before WP 5.8)
501	form = $('div[id$="{$this->id}"] form');
502	}
503
504	if (typeof JFormValidator !== 'undefined') {
505	// init internal validator
506	var validator = new JFormValidator(form);
507
508	// validate fields every time the SAVE button is clicked
509	form.find('input[name="savewidget"]').on('click', function(event) {
510	return validator.validate();
511	});
512	}
513
514	// init select2 on dropdown with multiple selection
515	if (jQuery.fn.select2) {
516	form.find('select[multiple]').select2({
517	width: '100%'
518	});
519	}
520
521	// initialize popover within the form
522	if (jQuery.fn.popover) {
523	form.find('.inline-popover').popover({sanitize: false, container: 'body'});
524	}
525	}
526
527	$(function() {
528	// If the widget is not a template, register the scripts.
529	// A widget template ID always ends with "__i__"
530	if (!"{$this->id}".match(/__i__$/)) {
531	registerWidgetScripts();
532	}
533
534	// Attach event to the "ADD WIDGET" button
535	$('.widgets-chooser-add').on('click', function(e) {
536	// find widget parent of the clicked button
537	var parent = this.closest('div[id$="{$this->id}"]');
538
539	if (!parent) {
540	return;
541	}
542
543	// extract ID from the template parent (exclude "__i__")
544	var id = $(parent).attr('id').match(/(.*?)__i__$/);
545
546	if (!id) {
547	return;
548	}
549
550	// register scripts with a short delay to make sure the
551	// template has been moved on the right side
552	setTimeout(function() {
553	// obtain the box that has been created
554	var createdForm = $('div[id^="' + id.pop() + '"]').last();
555
556	// find form within the box
557	var _form = $(createdForm).find('form');
558
559	// register scripts at runtime
560	registerWidgetScripts(_form);
561	}, 32);
562	});
563
564	// register save callback for this kind of widget only once
565	if (!VIK_WIDGET_SAVE_LOOKUP.hasOwnProperty('{$this->_id}')) {
566	// flag as loaded
567	VIK_WIDGET_SAVE_LOOKUP['{$this->_id}'] = 1;
568
569	// Attach event to SAVE callback
570	$(document).ajaxSuccess(function(event, xhr, settings) {
571	// make sure the request was used to save the widget settings
572	if (!settings.data \|\| typeof settings.data !== 'string' \|\| settings.data.indexOf('action=save-widget') === -1) {
573	// wrong request
574	return;
575	}
576
577	// extract widget ID from request
578	var widget_id = settings.data.match(/widget-id=([a-z0-9_-]+)(?:&\|$)/i);
579
580	// make sure this is the widget that was saved
581	if (!widget_id) {
582	// wrong widget
583	return;
584	}
585
586	// get cleansed widget ID
587	widget_id = widget_id.pop();
588
589	// make sure the widget starts with this ID
590	if (widget_id.indexOf('{$this->_id}') !== 0) {
591	// wrong widget
592	return;
593	}
594
595	// obtain the box that has been updated
596	var updatedForm = $('div[id$="' + widget_id + '"]').find('form');
597
598	// register scripts at runtime
599	registerWidgetScripts(updatedForm);
600	});
601	}
602	});
603	})(jQuery);
604	JS
605	);
606	}
607
608	/**
609	* Sanitize widget form values as they are saved.
610	*
611	* @param array $new_instance Values just sent to be saved.
612	* @param array $old_instance Previously saved values from database.
613	*
614	* @return array Updated safe values to be saved.
615	*
616	* @since 10.1.21
617	*/
618	public function update($new_instance, $old_instance)
619	{
620	if (!empty($new_instance['moduleclass_sfx']))
621	{
622	// make mod class suffix safe
623	$new_instance['moduleclass_sfx'] = preg_replace("/[^a-zA-Z0-9_\-\s]+/", '', $new_instance['moduleclass_sfx']);
624	}
625
626	return $new_instance;
627	}
628
629	/**
630	* Add hooks for enqueueing assets when registering all widget instances of this widget class.
631	*
632	* @param integer $number Optional. The unique order number of this widget instance
633	* compared to other instances of the same class. Default -1.
634	*
635	* @return void
636	*
637	* @since 10.1.38
638	*/
639	public function _register_one($number = -1)
640	{
641	// invoke parent
642	parent::_register_one($number);
643
644	if (!$this->registered)
645	{
646	// load required resources
647	$this->useScript();
648
649	// flag as already registered
650	$this->registered = true;
651	}
652	}
653	}
654