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579 lines
24 KiB
579 lines
24 KiB
<?php
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/* For licensing terms, see /license.txt */
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require_once api_get_path(LIBRARY_PATH) . 'pear/HTML/QuickForm.php';
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require_once api_get_path(LIBRARY_PATH) . 'pear/HTML/QuickForm/advmultiselect.php';
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/**
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* Filter
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*/
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define('NO_HTML', 1);
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define('STUDENT_HTML', 2);
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define('TEACHER_HTML', 3);
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define('STUDENT_HTML_FULLPAGE', 4);
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define('TEACHER_HTML_FULLPAGE', 5);
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/**
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* Objects of this class can be used to create/manipulate/validate user input.
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*/
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class FormValidator extends HTML_QuickForm
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{
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/**
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* Create a form validator based on an array of form data:
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*
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* array(
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* 'name' => 'zombie_report_parameters', //optional
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* 'method' => 'GET', //optional
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* 'items' => array(
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* array(
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* 'name' => 'ceiling',
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* 'label' => 'Ceiling', //optional
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* 'type' => 'date',
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* 'default' => date() //optional
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* ),
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* array(
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* 'name' => 'active_only',
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* 'label' => 'ActiveOnly',
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* 'type' => 'checkbox',
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* 'default' => true
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* ),
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* array(
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* 'name' => 'submit_button',
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* 'type' => 'style_submit_button',
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* 'value' => get_lang('Search'),
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* 'attributes' => array('class' => 'search')
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* )
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* )
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* );
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*
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* @param array form_data
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* @return FormValidator
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*/
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static function create($form_data)
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{
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if (empty($form_data)) {
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return null;
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}
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$form_name = isset($form_data['name']) ? $form_data['name'] : 'form';
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$form_method = isset($form_data['method']) ? $form_data['method'] : 'POST';
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$form_action = isset($form_data['action']) ? $form_data['action'] : '';
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$form_target = isset($form_data['target']) ? $form_data['target'] : '';
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$form_attributes = isset($form_data['attributes']) ? $form_data['attributes'] : null;
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$form_track_submit = isset($form_data['track_submit']) ? $form_data['track_submit'] : true;
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$result = new FormValidator($form_name, $form_method, $form_action, $form_target, $form_attributes, $form_track_submit);
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$defaults = array();
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foreach ($form_data['items'] as $item) {
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$name = $item['name'];
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$type = isset($item['type']) ? $item['type'] : 'text';
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$label = isset($item['label']) ? $item['label'] : '';
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if ($type == 'wysiwyg') {
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$element = $result->add_html_editor($name, $label);
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} else {
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$element = $result->addElement($type, $name, $label);
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}
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if (isset($item['attributes'])) {
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$attributes = $item['attributes'];
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$element->setAttributes($attributes);
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}
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if (isset($item['value'])) {
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$value = $item['value'];
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$element->setValue($value);
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}
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if (isset($item['default'])) {
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$defaults[$name] = $item['default'];
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}
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if (isset($item['rules'])) {
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$rules = $item['rules'];
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foreach ($rules as $rule) {
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$message = $rule['message'];
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$type = $rule['type'];
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$format = isset($rule['format']) ? $rule['format'] : null;
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$validation = isset($rule['validation']) ? $rule['validation'] : 'server';
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$force = isset($rule['force']) ? $rule['force'] : false;
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$result->addRule($name, $message, $type, $format, $validation, $reset, $force);
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}
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}
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}
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$result->setDefaults($defaults);
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return $result;
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}
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var $with_progress_bar = false;
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/**
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* Constructor
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* @param string $form_name Name of the form
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* @param string $method (optional Method ('post' (default) or 'get')
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* @param string $action (optional Action (default is $PHP_SELF)
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* @param string $target (optional Form's target defaults to '_self'
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* @param mixed $attributes (optional) Extra attributes for <form> tag
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* @param bool $track_submit (optional) Whether to track if the form was
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* submitted by adding a special hidden field (default = true)
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*/
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function __construct($form_name, $method = 'post', $action = '', $target = '', $attributes = null, $track_submit = true)
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{
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// Default form class.
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if (is_array($attributes) && !isset($attributes['class']) || empty($attributes)) {
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$attributes['class'] = 'form-horizontal';
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}
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parent::__construct($form_name, $method, $action, $target, $attributes, $track_submit);
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// Load some custom elements and rules
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$dir = api_get_path(LIBRARY_PATH) . 'formvalidator/';
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$this->registerElementType('html_editor', $dir . 'Element/html_editor.php', 'HTML_QuickForm_html_editor');
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$this->registerElementType('datepicker', $dir . 'Element/datepicker.php', 'HTML_QuickForm_datepicker');
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$this->registerElementType('datepickerdate', $dir . 'Element/datepickerdate.php', 'HTML_QuickForm_datepickerdate');
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$this->registerElementType('receivers', $dir . 'Element/receivers.php', 'HTML_QuickForm_receivers');
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$this->registerElementType('select_language', $dir . 'Element/select_language.php', 'HTML_QuickForm_Select_Language');
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$this->registerElementType('select_ajax', $dir . 'Element/select_ajax.php', 'HTML_QuickForm_Select_Ajax');
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$this->registerElementType('select_theme', $dir . 'Element/select_theme.php', 'HTML_QuickForm_Select_Theme');
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$this->registerElementType('style_submit_button', $dir . 'Element/style_submit_button.php', 'HTML_QuickForm_stylesubmitbutton');
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$this->registerElementType('style_reset_button', $dir . 'Element/style_reset_button.php', 'HTML_QuickForm_styleresetbutton');
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$this->registerElementType('button', $dir . 'Element/style_submit_button.php', 'HTML_QuickForm_stylesubmitbutton');
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$this->registerElementType('captcha', 'HTML/QuickForm/CAPTCHA.php', 'HTML_QuickForm_CAPTCHA');
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$this->registerElementType('CAPTCHA_Image', 'HTML/QuickForm/CAPTCHA/Image.php', 'HTML_QuickForm_CAPTCHA_Image');
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$this->registerRule('date', null, 'HTML_QuickForm_Rule_Date', $dir . 'Rule/Date.php');
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$this->registerRule('date_compare', null, 'HTML_QuickForm_Rule_DateCompare', $dir . 'Rule/DateCompare.php');
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$this->registerRule('html', null, 'HTML_QuickForm_Rule_HTML', $dir . 'Rule/HTML.php');
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$this->registerRule('username_available', null, 'HTML_QuickForm_Rule_UsernameAvailable', $dir . 'Rule/UsernameAvailable.php');
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$this->registerRule('username', null, 'HTML_QuickForm_Rule_Username', $dir . 'Rule/Username.php');
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$this->registerRule('filetype', null, 'HTML_QuickForm_Rule_Filetype', $dir . 'Rule/Filetype.php');
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$this->registerRule('multiple_required', 'required', 'HTML_QuickForm_Rule_MultipleRequired', $dir . 'Rule/MultipleRequired.php');
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$this->registerRule('url', null, 'HTML_QuickForm_Rule_Url', $dir . 'Rule/Url.php');
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$this->registerRule('compare_fields', null, 'HTML_QuickForm_Compare_Fields', $dir . 'Rule/CompareFields.php');
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$this->registerRule('CAPTCHA', 'rule', 'HTML_QuickForm_Rule_CAPTCHA', 'HTML/QuickForm/Rule/CAPTCHA.php');
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// Modify the default templates
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$renderer = & $this->defaultRenderer();
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//Form template
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$form_template = '<form{attributes}>
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<fieldset>
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{content}
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<div class="clear"></div>
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</fieldset>
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{hidden}
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</form>';
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$renderer->setFormTemplate($form_template);
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//Element template
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if (isset($attributes['class']) && $attributes['class'] == 'well form-inline') {
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$element_template = ' {label} {element} ';
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$renderer->setElementTemplate($element_template);
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} elseif (isset($attributes['class']) && $attributes['class'] == 'form-search') {
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$element_template = ' {label} {element} ';
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$renderer->setElementTemplate($element_template);
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} else {
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$element_template = '
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<div class="control-group {error_class}">
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<label class="control-label">
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<!-- BEGIN required --><span class="form_required">*</span><!-- END required -->
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{label}
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</label>
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<div class="controls">
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{element}
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<!-- BEGIN label_3 -->
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{label_3}
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<!-- END label_3 -->
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<!-- BEGIN label_2 -->
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<p class="help-block">{label_2}</p>
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<!-- END label_2 -->
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<!-- BEGIN error -->
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<span class="help-inline">{error}</span>
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<!-- END error -->
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</div>
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</div>';
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$renderer->setElementTemplate($element_template);
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//Display a gray div in the buttons
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$button_element_template_simple = '<div class="form-actions">{label} {element}</div>';
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$renderer->setElementTemplate($button_element_template_simple, 'submit_in_actions');
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//Display a gray div in the buttons + makes the button available when scrolling
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$button_element_template_in_bottom = '<div class="form-actions bottom_actions bg-form">{label} {element}</div>';
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$renderer->setElementTemplate($button_element_template_in_bottom, 'submit_fixed_in_bottom');
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//When you want to group buttons use something like this
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/* $group = array();
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$group[] = $form->createElement('button', 'mark_all', get_lang('MarkAll'));
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$group[] = $form->createElement('button', 'unmark_all', get_lang('UnmarkAll'));
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$form->addGroup($group, 'buttons_in_action');
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*/
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$renderer->setElementTemplate($button_element_template_simple, 'buttons_in_action');
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$button_element_template_simple_right = '<div class="form-actions"> <div class="pull-right">{label} {element}</div></div>';
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$renderer->setElementTemplate($button_element_template_simple_right, 'buttons_in_action_right');
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/*
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$renderer->setElementTemplate($button_element_template, 'submit_button');
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$renderer->setElementTemplate($button_element_template, 'submit');
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$renderer->setElementTemplate($button_element_template, 'button');
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*
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*/
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}
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//Set Header template
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$renderer->setHeaderTemplate('<legend>{header}</legend>');
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//Set required field template
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HTML_QuickForm::setRequiredNote('<span class="form_required">*</span> <small>' . get_lang('ThisFieldIsRequired') . '</small>');
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$required_note_template = <<<EOT
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<div class="control-group">
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<div class="controls">{requiredNote}</div>
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</div>
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EOT;
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$renderer->setRequiredNoteTemplate($required_note_template);
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}
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/**
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* Adds a textfield to the form.
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* A trim-filter is attached to the field.
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* @param string $label The label for the form-element
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* @param string $name The element name
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* @param boolean $required (optional) Is the form-element required (default=true)
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* @param array $attributes (optional) List of attributes for the form-element
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*/
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function add_textfield($name, $label, $required = true, $attributes = array())
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{
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$this->addElement('text', $name, $label, $attributes);
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$this->applyFilter($name, 'trim');
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if ($required) {
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$this->addRule($name, get_lang('ThisFieldIsRequired'), 'required');
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}
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}
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function add_hidden($name, $value)
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{
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$this->addElement('hidden', $name, $value);
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}
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function add_textarea($name, $label, $attributes = array())
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{
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$this->addElement('textarea', $name, $label, $attributes);
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}
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function add_button($name, $label, $attributes = array())
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{
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$this->addElement('button', $name, $label, $attributes);
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}
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function add_checkbox($name, $label, $trailer = '', $attributes = array())
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{
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$this->addElement('checkbox', $name, $label, $trailer, $attributes);
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}
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function add_radio($name, $label, $options = '')
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{
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$group = array();
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foreach ($options as $key => $value) {
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$group[] = $this->createElement('radio', null, null, $value, $key);
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}
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$this->addGroup($group, $name, $label);
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}
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function add_select($name, $label, $options = '', $attributes = array())
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{
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$this->addElement('select', $name, $label, $options, $attributes);
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}
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function add_label($label, $text)
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{
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$this->addElement('label', $label, $text);
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}
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function add_header($text)
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{
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$this->addElement('header', $text);
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}
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function add_file($name, $label, $attributes = array())
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{
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$this->addElement('file', $name, $label, $attributes);
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}
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function add_html($snippet)
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{
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$this->addElement('html', $snippet);
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}
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/**
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* Adds a HTML-editor to the form to fill in a title.
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* A trim-filter is attached to the field.
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* A HTML-filter is attached to the field (cleans HTML)
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* A rule is attached to check for unwanted HTML
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* @param string $label The label for the form-element
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* @param string $name The element name
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* @param boolean $required (optional) Is the form-element required (default=true)
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* @param boolean $full_page (optional) When it is true, the editor loads completed html code for a full page.
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* @param array $editor_config (optional) Configuration settings for the online editor.
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*/
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function add_html_editor($name, $label, $required = true, $full_page = false, $config = null)
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{
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$this->addElement('html_editor', $name, $label, 'rows="15" cols="80"', $config);
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$this->applyFilter($name, 'trim');
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$html_type = STUDENT_HTML;
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if (!empty($_SESSION['status'])) {
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$html_type = $_SESSION['status'] == COURSEMANAGER ? TEACHER_HTML : STUDENT_HTML;
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}
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if (is_array($config)) {
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if (isset($config['FullPage'])) {
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$full_page = is_bool($config['FullPage']) ? $config['FullPage'] : ($config['FullPage'] === 'true');
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} else {
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$config['FullPage'] = $full_page;
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}
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} else {
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$config = array('FullPage' => (bool) $full_page);
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}
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if ($full_page) {
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$html_type = isset($_SESSION['status']) && $_SESSION['status'] == COURSEMANAGER ? TEACHER_HTML_FULLPAGE : STUDENT_HTML_FULLPAGE;
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//First *filter* the HTML (markup, indenting, ...)
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//$this->applyFilter($name,'html_filter_teacher_fullpage');
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} else {
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//First *filter* the HTML (markup, indenting, ...)
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//$this->applyFilter($name,'html_filter_teacher');
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}
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if ($required) {
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$this->addRule($name, get_lang('ThisFieldIsRequired'), 'required');
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}
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if ($full_page) {
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$el = $this->getElement($name);
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$el->fullPage = true;
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}
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// Add rule to check not-allowed HTML
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//$this->addRule($name, get_lang('SomeHTMLNotAllowed'), 'html', $html_type);
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}
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/**
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* Adds a datepicker element to the form
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* A rule is added to check if the date is a valid one
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* @param string $label The label for the form-element
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* @param string $name The element name
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*/
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function add_datepicker($name, $label)
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{
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$this->addElement('datepicker', $name, $label, array('form_name' => $this->getAttribute('name')));
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$this->_elements[$this->_elementIndex[$name]]->setLocalOption('minYear', 1900); // TODO: Now - 9 years
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$this->addRule($name, get_lang('InvalidDate'), 'date');
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}
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/**
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* Adds a datepickerdate element to the form
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* A rule is added to check if the date is a valid one
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* @param string $label The label for the form-element
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* @param string $name The element name
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*/
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function add_datepickerdate($name, $label)
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{
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$this->addElement('datepickerdate', $name, $label, array('form_name' => $this->getAttribute('name')));
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$this->_elements[$this->_elementIndex[$name]]->setLocalOption('minYear', 1900); // TODO: Now - 9 years
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$this->addRule($name, get_lang('InvalidDate'), 'date');
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}
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/**
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* Adds a timewindow element to the form.
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* 2 datepicker elements are added and a rule to check if the first date is
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* before the second one.
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* @param string $label The label for the form-element
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* @param string $name The element name
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*/
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function add_timewindow($name_1, $name_2, $label_1, $label_2)
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{
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$this->add_datepicker($name_1, $label_1);
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$this->add_datepicker($name_2, $label_2);
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$this->addRule(array($name_1, $name_2), get_lang('StartDateShouldBeBeforeEndDate'), 'date_compare', 'lte');
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}
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/**
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* Adds a button to the form to add resources.
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*/
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function add_resource_button()
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{
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$group = array();
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$group[] = $this->createElement('static', 'add_resource_img', null, '<img src="' . api_get_path(WEB_IMG_PATH) . 'attachment.gif" alt="' . get_lang('Attachment') . '"/>');
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$group[] = $this->createElement('submit', 'add_resource', get_lang('Attachment'), 'class="link_alike"');
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$this->addGroup($group);
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}
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/**
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* Adds a progress bar to the form.
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*
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* Once the user submits the form, a progress bar (animated gif) is
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* displayed. The progress bar will disappear once the page has been
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* reloaded.
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*
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* @param int $delay (optional) The number of seconds between the moment the user
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* @param string $label (optional) Custom label to be shown
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* submits the form and the start of the progress bar.
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*/
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function add_progress_bar($delay = 2, $label = '')
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{
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if (empty($label)) {
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$label = get_lang('PleaseStandBy');
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}
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$this->with_progress_bar = true;
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$this->updateAttributes("onsubmit=\"javascript: myUpload.start('dynamic_div','" . api_get_path(WEB_IMG_PATH) . "progress_bar.gif','" . $label . "','" . $this->getAttribute('id') . "')\"");
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$this->addElement('html', '<script language="javascript" src="' . api_get_path(WEB_LIBRARY_PATH) . 'javascript/upload.js" type="text/javascript"></script>');
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$this->addElement('html', '<script type="text/javascript">var myUpload = new upload(' . (abs(intval($delay)) * 1000) . ');</script>');
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}
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/**
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* Uses new functions (php 5.2) for displaying real upload progress.
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* @param string $upload_id The value of the field UPLOAD_IDENTIFIER, the second parameter (XXX) of the $form->addElement('file', XXX) sentence
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* @param string $element_after The first element of the form (to place at first UPLOAD_IDENTIFIER)
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* @param int $delay (optional) The frequency of the xajax call
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* @param bool $wait_after_upload (optional)
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*/
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function add_real_progress_bar($upload_id, $element_after, $delay = 2, $wait_after_upload = false)
|
|
{
|
|
|
|
if (!function_exists('uploadprogress_get_info')) {
|
|
$this->add_progress_bar($delay);
|
|
return;
|
|
}
|
|
|
|
if (!class_exists('xajax')) {
|
|
require_once api_get_path(LIBRARY_PATH) . 'xajax/xajax.inc.php';
|
|
}
|
|
|
|
$xajax_upload = new xajax(api_get_path(WEB_LIBRARY_PATH) . 'upload.xajax.php');
|
|
|
|
$xajax_upload->registerFunction('updateProgress');
|
|
|
|
|
|
// IMPORTANT : must be the first element of the form
|
|
$el = $this->insertElementBefore(FormValidator::createElement('html', '<input type="hidden" name="UPLOAD_IDENTIFIER" value="' . $upload_id . '" />'), $element_after);
|
|
|
|
$this->addElement('html', '<br />');
|
|
|
|
// Add div-element where the progress bar is to be displayed
|
|
$this->addElement('html', '
|
|
<div id="dynamic_div_container" style="display:none">
|
|
<div id="dynamic_div_label">' . get_lang('UploadFile') . '</div>
|
|
<div id="dynamic_div_frame" style="width:214px; height:12px; border:1px solid grey; background-image:url(' . api_get_path(WEB_IMG_PATH) . 'real_upload_frame.gif);">
|
|
<div id="dynamic_div_filled" style="width:0%;height:100%;background-image:url(' . api_get_path(WEB_IMG_PATH) . 'real_upload_step.gif);background-repeat:repeat-x;background-position:center;"></div>
|
|
</div>
|
|
</div>');
|
|
|
|
if ($wait_after_upload) {
|
|
$this->addElement('html', '
|
|
<div id="dynamic_div_waiter_container" style="display:none">
|
|
<div id="dynamic_div_waiter_label">
|
|
' . get_lang('SlideshowConversion') . '
|
|
</div>
|
|
<div id="dynamic_div_waiter_frame">
|
|
<img src="' . api_get_path(WEB_IMG_PATH) . 'real_upload_frame.gif" />
|
|
</div>
|
|
</div>
|
|
');
|
|
}
|
|
|
|
// Get the xajax code
|
|
$this->addElement('html', $xajax_upload->getJavascript(api_get_path(WEB_LIBRARY_PATH) . 'xajax'));
|
|
|
|
// Get the upload code
|
|
$this->addElement('html', '<script language="javascript" src="' . api_get_path(WEB_LIBRARY_PATH) . 'javascript/upload.js" type="text/javascript"></script>');
|
|
$this->addElement('html', '<script type="text/javascript">var myUpload = new upload(' . (abs(intval($delay)) * 1000) . ');</script>');
|
|
|
|
if (!$wait_after_upload) {
|
|
$wait_after_upload = 0;
|
|
}
|
|
|
|
// Add the upload event
|
|
$this->updateAttributes("onsubmit=\"javascript: myUpload.startRealUpload('dynamic_div','" . $upload_id . "','" . $this->getAttribute('id') . "'," . $wait_after_upload . ")\"");
|
|
}
|
|
|
|
/**
|
|
* This function has been created for avoiding changes directly within QuickForm class.
|
|
* When we use it, the element is threated as 'required' to be dealt during validation.
|
|
* @param array $element The array of elements
|
|
* @param string $message The message displayed
|
|
*/
|
|
function add_multiple_required_rule($elements, $message)
|
|
{
|
|
$this->_required[] = $elements[0];
|
|
$this->addRule($elements, $message, 'multiple_required');
|
|
}
|
|
|
|
/**
|
|
* Displays the form.
|
|
* If an element in the form didn't validate, an error message is showed
|
|
* asking the user to complete the form.
|
|
*/
|
|
function display()
|
|
{
|
|
echo $this->return_form();
|
|
}
|
|
|
|
/**
|
|
* Returns the HTML code of the form.
|
|
* If an element in the form didn't validate, an error message is showed
|
|
* asking the user to complete the form.
|
|
*
|
|
* @return string $return_value HTML code of the form
|
|
*
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, august 2006
|
|
*/
|
|
function return_form()
|
|
{
|
|
$error = false;
|
|
foreach ($this->_elements as $element) {
|
|
if (!is_null(parent::getElementError($element->getName()))) {
|
|
$error = true;
|
|
break;
|
|
}
|
|
}
|
|
$return_value = '';
|
|
if ($error) {
|
|
$return_value = Display::return_message(get_lang('FormHasErrorsPleaseComplete'), 'warning');
|
|
}
|
|
$return_value .= parent::toHtml();
|
|
// Add div-element which is to hold the progress bar
|
|
if (isset($this->with_progress_bar) && $this->with_progress_bar) {
|
|
$return_value .= '<div id="dynamic_div" style="display:block; margin-left:40%; margin-top:10px; height:50px;"></div>';
|
|
}
|
|
return $return_value;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Cleans HTML text
|
|
* @param string $html HTML to clean
|
|
* @param int $mode (optional)
|
|
* @return string The cleaned HTML
|
|
*/
|
|
function html_filter($html, $mode = NO_HTML)
|
|
{
|
|
require_once api_get_path(LIBRARY_PATH) . 'formvalidator/Rule/HTML.php';
|
|
$allowed_tags = HTML_QuickForm_Rule_HTML::get_allowed_tags($mode);
|
|
$cleaned_html = kses($html, $allowed_tags);
|
|
return $cleaned_html;
|
|
}
|
|
|
|
function html_filter_teacher($html)
|
|
{
|
|
return html_filter($html, TEACHER_HTML);
|
|
}
|
|
|
|
function html_filter_student($html)
|
|
{
|
|
return html_filter($html, STUDENT_HTML);
|
|
}
|
|
|
|
function html_filter_teacher_fullpage($html)
|
|
{
|
|
return html_filter($html, TEACHER_HTML_FULLPAGE);
|
|
}
|
|
|
|
function html_filter_student_fullpage($html)
|
|
{
|
|
return html_filter($html, STUDENT_HTML_FULLPAGE);
|
|
}
|
|
|