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<?php
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// $Id: explainfield.module,v 1.1 2007/09/12 12:56:44 snufkin Exp $
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/**
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* Implementation of hook_field_info().
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*/
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function explainfield_field_info() {
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return array(
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'explainfield' => array('label' => 'Explain Field'),
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);
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}
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function explainfield_field_settings($op, $field) {
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switch($op) {
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case 'form':
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$form = array();
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$form['allowed_values'] = array(
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'#type' => 'textarea',
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'#title' => t('Allowed values list'),
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'#default_value' => isset($field['allowed_values']) ? $field['allowed_values'] : '',
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'#required' => FALSE,
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'#multiple' => FALSE,
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'#rows' => 5,
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'#description' => t('The possible values this field can contain. Enter one value per line, in the format key|label. The key is the value that will be stored in the database and it must match the field storage type, %type. The label is optional and the key will be used as the label if no label is specified.', array('%type' => $field['type'])),
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);
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$form['trigger_value'] = array(
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'#type' => 'textfield',
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'#title' => t('Trigger key'),
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'#default_value' => isset($field['trigger_value']) ? $field['trigger_value'] : '',
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'#required' => FALSE,
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'#description' => t('Select the key on which the explain field will trigger'),
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);
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$form['explain_options'] = array(
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'#type' => 'fieldset',
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'#title' => t('Explain field options'),
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/*'#collapsible' => TRUE,*/
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'#collapsed' => FALSE,
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);
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$form['explain_options']['explain_label'] = array(
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'#type' => 'textfield',
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'#title' => 'Label',
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'#default_value' => isset($field['explain_label']) ? $field['explain_label'] : '',
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'#required' => FALSE,
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'#description' => t('Label that will appear over the explain field, and when viewing the node.'),
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);
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$form['explain_options']['explain_text'] = array(
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'#type' => 'textarea',
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'#title' => 'Help text for the explain field',
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'#default_value' => isset($field['explain_text']) ? $field['explain_text'] : '',
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'#required' => FALSE,
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'#rows' => 3,
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'#description' => t('Instructions on what to write into the appearing explain field.'),
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);
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$form['explain_options']['max_length'] = array(
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'#type' => 'textfield',
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'#title' => t('Maximum length'),
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'#default_value' => isset($field['max_length']) ? $field['max_length'] : '',
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'#required' => FALSE,
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'#description' => t('The maximum length of the field in characters. Leave blank for an unlimited size.'),
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);
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$form['explain_options']['explain_rows'] = array(
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'#type' => 'textfield',
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'#title' => t('Textfield size'),
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'#default)value' => isset($field['explain_rows']) ? $field['explain_rows'] : '',
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'#required' => FALSE,
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'#description' => t('The height of the explain field. Leave blank for default 3.'),
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);
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return $form;
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case 'save':
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return array('allowed_values', 'trigger_value', 'explain_text', 'explain_rows', 'explain_label', 'max_length');
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case 'database columns':
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$columns = array(
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'value' => array('type' => 'longtext', 'not null' => TRUE, 'default' => "''", 'sortable' => TRUE),
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'explainfield' => array('type' => 'longtext', 'not null' => TRUE, 'default' => "''", 'sortable' => TRUE),
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);
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return $columns;
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case 'validate':
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if( ($field['field_name'] == 'field_explainfield') && ($field['required'] == 0)) break;
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elseif ( $field['field_name'] == 'field_explainfield' ) {
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$trigger = $field['trigger_value'];
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/* Check if trigger is set correctly */
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$values = explode("\n", $field['allowed_values']);
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foreach($values as $n => $line) {
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$values[$n] = explode('|', $line);
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$keys[] = $values[$n][0];
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}
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if(!in_array($trigger, $keys) ) {
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form_set_error('trigger_value', t('Incorrect trigger key is set.'));
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}
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break;
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}
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case 'filters':
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return array(
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'substring' => array(
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'operator' => 'views_handler_operator_like',
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'handler' => 'views_handler_filter_like',
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),
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'alpha_order' => array(
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'name' => 'alphabetical order',
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'operator' => 'views_handler_operator_gtlt',
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),
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);
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}
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}
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/**
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* Implementation of hook_field_formatter_info().
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*/
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function explainfield_field_formatter_info() {
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return array(
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'default' => array(
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'label' => 'Default',
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'field types' => array('explainfield'),
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),
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'replace' => array(
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'label' => 'Replace with explanation',
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'field types' => array('explainfield'),
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),
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'valueonly' => array(
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'label' => 'Value only',
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'field types' => array('explainfield'),
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),
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'explanation' => array(
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'label' => 'Explanation only',
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'field types' => array('explainfield'),
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),
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);
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}
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/**
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* Implementation of hook_field_formatter().
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*
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* The $node argument is necessary so that filter access can be checked on
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* node preview.
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*/
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function explainfield_field_formatter($field, $item, $formatter, $node) {
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if (!isset($item['value'])) {
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return '';
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}
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if ($allowed_values = explainfield_allowed_values($field)) {
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$values = $allowed_values[$item['value']];
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}
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switch ($formatter) {
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case 'valueonly':
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unset($item['explainfield']);
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$text = strip_tags($values);
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break;
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case 'default':
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$explanation = !empty($item['explainfield']) ?
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'<div class="field-label">' . $field['explain_label'] . ': </div><div class="field-items">'. check_plain($item['explainfield']) . '</div>' : '';
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$text = $values . $explanation;
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break;
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case 'replace':
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$explanation = !empty($item['explainfield']) ? check_plain($item['explainfield']) : '';
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/** If the key is the trigger key output the explanation only. In this case
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* $explanation is set, because we validate for this at form submission
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*/
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if($item['value'] == $field['trigger_value']) { $text = $explanation; }
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else {
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$text = $values;
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}
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break;
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case 'explanation':
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$text = check_plain($item['explainfield']);
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break;
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}
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return $text;
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/*return check_plain($text);*/
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}
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function explainfield_field($op, &$node, $field, &$items, $teaser, $page) {
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switch($op) {
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case 'validate':
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if ($field['max_length'] > 0) {
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foreach ($items as $delta => $data) {
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$error_field = $field['field_name'] .']['. $delta .'][value';
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if (strlen($data['explainfield']) > $field['max_length']) {
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form_set_error($error_field, t('There is a limit of %max characters on %label.', array('%max' => $field['max_length'], '%label' => $field['widget']['label'] )));
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}
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}
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}
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break;
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}
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}
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/**
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* Implementation of hook_widget_info().
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*/
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function explainfield_widget_info() {
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$option_types = array('explainfield',);
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return array(
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'explainfield_select' => array(
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'label' => 'Explainfield in select list',
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'field types' => $option_types,
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),
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'explainfield_buttons' => array(
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'label' => 'Explainfield in list of check boxes/radio buttons',
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'field types' => $option_types,
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),
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);
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}
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/**
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* Implementation of hook_widget_settings().
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*/
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function explainfield_widget_settings() {
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}
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/**
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* Implementation of hook_widget().
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*/
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function explainfield_widget($op, &$node, $field, &$items) {
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switch ($op) {
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case 'prepare form values':
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$options = _explainfield_options($field, $node);
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$items_transposed = content_transpose_array_rows_cols($items);
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$values = (isset($items_transposed['value']) && is_array($items_transposed['value'])) ? $items_transposed['value'] : array();
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$explains = (isset($items_transposed['explainfield']) && is_array($items_transposed['explainfield'])) ? $items_transposed['explainfield'] : array();
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$keys = array();
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foreach ($values as $value) {
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$key = array_search($value, array_keys($options));
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if (isset($key)) {
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$keys[] = $value;
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}
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}
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$explainfields = array();
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foreach ($explains as $text) {
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if (isset($text) && !(empty($text))) {
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$explainfields[] = $text;
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}
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}
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if ($field['multiple'] || $field['widget']['type'] == 'explainfield_onoff') {
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$items['default keys'] = $keys;
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$items['default explain'] = reset($explainfields);
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}
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else {
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$items['default key'] = reset($keys);
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$items['default explain'] = $items[0]['explainfield'];
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}
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break;
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case 'form':
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$options = _explainfield_options($field, $node);
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$form = array();
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$form[$field['field_name']] = array('#tree' => TRUE);
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switch ($field['widget']['type']) {
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case 'explainfield_select':
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/* JavaScript for select */
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$extra_select = '
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<script language="javascript">
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$(document).ready(function() {
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if( $("select#edit-'._misc_formize($field['field_name']).'-key").val() != \''.$field['trigger_value'] . '\') { $("#explainfield-'._misc_formize($field['field_name']).'").hide(); }
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$("select#edit-'._misc_formize($field['field_name']).'-key").change( function () {
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if ( $(this).val() == \''.$field['trigger_value'] . '\') { $("#explainfield-'._misc_formize($field['field_name']).'").show(); }
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else { $("#explainfield-'._misc_formize($field['field_name']).'").hide(); }
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});
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});
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</script>';
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$form[$field['field_name']]['key'] = array(
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'#type' => 'select',
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'#title' => t($field['widget']['label']),
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'#default_value' => $items['default key'],
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'#multiple' => FALSE,
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'#options' => $options,
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'#required' => $field['required'],
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'#description' => t($field['widget']['description']) . $extra_select,
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);
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$form[$field['field_name']]['explain'] = array(
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'#type' => 'textarea',
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'#title' => t($field['explain_label']),
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'#default_value' => $items['default explain'],
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'#rows' => isset($field['explain_rows']) ? $field['explain_rows'] : 3,
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'#prefix' => '<div id="explainfield-'._misc_formize($field['field_name']).'">',
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'#suffix' => '</div>',
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'#description' => t($field['explain_text']),
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);
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break;
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case 'explainfield_buttons':
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if ($field['multiple']) {
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/* JavaScript for checkbox */
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$extra = '
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<script language="javascript">
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$(document).ready(function() {
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if( !$("#edit-'._misc_formize($field['field_name']).'-keys-'.$field['trigger_value'].'").is(":checked")) {
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$("#explainfield-'._misc_formize($field['field_name']).'").hide();
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}
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$(\'input[@type="checkbox"]\').click( function () {
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if( $("#edit-'._misc_formize($field['field_name']).'-keys-'.$field['trigger_value'].'").is(":checked")) {
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$("#explainfield-'._misc_formize($field['field_name']).'").show();
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}
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else {
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$("#explainfield-'._misc_formize($field['field_name']).'").hide();
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}
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$(this).blur();
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});
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});
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</script>';
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$form[$field['field_name']]['keys'] = array(
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'#type' => 'checkboxes',
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'#title' => t($field['widget']['label']),
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'#default_value' => $items['default keys'],
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'#options' => $options,
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'#required' => $field['required'],
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'#description' => t($field['widget']['description']) . $extra,
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);
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}
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else {
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|
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/* JavaScript for radiobuttons */
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| 329 |
$extra = '
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| 330 |
<script language="javascript">
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| 331 |
$(document).ready(function() {
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| 333 |
if( $(\'input[@type="radio"][@checked]\').val() != \''.$field['trigger_value'].'\') {
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| 334 |
$("#explainfield-'._misc_formize($field['field_name']).'").hide();
|
| 335 |
}
|
| 336 |
|
| 337 |
$(\'input[@type="radio"][@name="'.$field['field_name'].'[key]"]\').click( function () {
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| 338 |
if ( $(this).attr(\'value\') == \''.$field['trigger_value'] . '\') { $("#explainfield-'._misc_formize($field['field_name']).'").show(); }
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| 339 |
else { $("#explainfield-'._misc_formize($field['field_name']).'").hide(); }
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| 340 |
$(this).blur();
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| 341 |
});
|
| 342 |
|
| 343 |
});
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| 344 |
</script>';
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| 345 |
$form[$field['field_name']]['key'] = array(
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| 346 |
'#type' => 'radios',
|
| 347 |
'#prefix' => '<div id="#edit-field-'. _misc_formize($field['widget']['label']) .'-keys">',
|
| 348 |
'#suffix' => '</div>',
|
| 349 |
'#title' => t($field['widget']['label']),
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| 350 |
'#default_value' => $items['default key'],
|
| 351 |
'#options' => $options,
|
| 352 |
'#required' => $field['required'],
|
| 353 |
'#description' => t($field['widget']['description']) . $extra,
|
| 354 |
);
|
| 355 |
}
|
| 356 |
$form[$field['field_name']]['explain'] = array(
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| 357 |
'#type' => 'textarea',
|
| 358 |
'#title' => t($field['explain_label']),
|
| 359 |
'#default_value' => $items['default explain'],
|
| 360 |
'#rows' => isset($field['explain_rows']) ? $field['explain_rows'] : 3,
|
| 361 |
'#prefix' => '<div id="explainfield-'._misc_formize($field['field_name']).'">',
|
| 362 |
'#suffix' => '</div>',
|
| 363 |
'#description' => t($field['explain_text']),
|
| 364 |
);
|
| 365 |
break;
|
| 366 |
}
|
| 367 |
return $form;
|
| 368 |
case 'validate':
|
| 369 |
/** We can't set the explain field to required, because it belongs to the options. E.g. if
|
| 370 |
* the user is on a non-trigger field it complains about the field being not filled.
|
| 371 |
* Need to validate manually.
|
| 372 |
*/
|
| 373 |
|
| 374 |
if(_explainfield_is_trigger_fieldcheck($items,$field)) {
|
| 375 |
$error_field = isset($item['error_field']) ? $item['error_field'] : $field['field_name'];
|
| 376 |
form_set_error($error_field, t('Please fill the optional form in %label if you select this option.', array('%label' => t($field['widget']['label'])) ));
|
| 377 |
}
|
| 378 |
break;
|
| 379 |
|
| 380 |
case 'process form values':
|
| 381 |
$options = _explainfield_options($field, $node);
|
| 382 |
$explanation = $items['explain'];
|
| 383 |
|
| 384 |
if ($field['multiple'] || $field['widget']['type'] == 'explainfield_onoff') {
|
| 385 |
$keys = (array) $items['keys'];
|
| 386 |
}
|
| 387 |
else {
|
| 388 |
$keys = array($items['key']);
|
| 389 |
}
|
| 390 |
|
| 391 |
$values = array();
|
| 392 |
foreach ($keys as $key) {
|
| 393 |
if (isset($options[$key])) {
|
| 394 |
$values[] = $key;
|
| 395 |
}
|
| 396 |
}
|
| 397 |
|
| 398 |
$items = content_transpose_array_rows_cols(array('value' => $values));
|
| 399 |
|
| 400 |
/* Only save explanation when it is necessary (the field exists all along) */
|
| 401 |
if( $delta = _explainfield_is_trigger($items, $field) ) {
|
| 402 |
$items[$delta-1]['explainfield'] = $explanation;
|
| 403 |
}
|
| 404 |
|
| 405 |
// Remove the widget's data representation so it isn't saved.
|
| 406 |
unset($items['keys']);
|
| 407 |
unset($items['key']);
|
| 408 |
break;
|
| 409 |
}
|
| 410 |
}
|
| 411 |
|
| 412 |
function _explainfield_options($field, $node) {
|
| 413 |
$types = _content_field_types();
|
| 414 |
$field_allowed_values = $types[$field['type']]['module'] .'_allowed_values';
|
| 415 |
if (function_exists($field_allowed_values)) {
|
| 416 |
$allowed_values = $field_allowed_values($field);
|
| 417 |
}
|
| 418 |
else {
|
| 419 |
$allowed_values = array();
|
| 420 |
}
|
| 421 |
|
| 422 |
if ($field['widget']['type'] == 'explainfield_select' ||
|
| 423 |
($field['widget']['type'] == 'explainfield_buttons' && !$field['multiple'])) {
|
| 424 |
if (!$field['required']) {
|
| 425 |
$allowed_values = array('' => theme('explainfield_none', $field['widget']['type'], $field['field_name'], $node->type)) + $allowed_values;
|
| 426 |
}
|
| 427 |
}
|
| 428 |
|
| 429 |
return $allowed_values;
|
| 430 |
}
|
| 431 |
|
| 432 |
/**
|
| 433 |
* Function returns the $delta + 1 (so we spare return 0 for false) if trigger is set,
|
| 434 |
* where $delta means where it is set
|
| 435 |
*/
|
| 436 |
function _explainfield_is_trigger($items, $field) {
|
| 437 |
$trigger = $field['trigger_value'];
|
| 438 |
if($field['multiple']) {
|
| 439 |
foreach($items as $delta => $values) {
|
| 440 |
if($values['value'] == $trigger) return $delta+1;
|
| 441 |
}
|
| 442 |
}
|
| 443 |
else {
|
| 444 |
if($items[0]['value'] == $trigger) return 1;
|
| 445 |
}
|
| 446 |
return false;
|
| 447 |
}
|
| 448 |
|
| 449 |
/**
|
| 450 |
* Function returns true if the trigger is set, but the extra textfield is empty
|
| 451 |
*/
|
| 452 |
function _explainfield_is_trigger_fieldcheck($items, $field) {
|
| 453 |
$trigger = $field['trigger_value'];
|
| 454 |
if(empty($items['key']) && empty($items['explain'])) { return false;}
|
| 455 |
if($field['multiple']) {
|
| 456 |
if( in_array($trigger, $items['keys']) && empty($items['explain']) ) {
|
| 457 |
return true;
|
| 458 |
}
|
| 459 |
}
|
| 460 |
else if( in_array($trigger, $items) && empty($items['explain']) ) {
|
| 461 |
return true;
|
| 462 |
}
|
| 463 |
|
| 464 |
else return false;
|
| 465 |
}
|
| 466 |
|
| 467 |
/**
|
| 468 |
* Theme the label for the empty value for options that are not required.
|
| 469 |
* The default theme will display N/A for a radio list and blank for a select.
|
| 470 |
*/
|
| 471 |
function theme_explainfield_none($widget_type, $field_name, $node_type) {
|
| 472 |
switch ($widget_type) {
|
| 473 |
case 'explainfield_buttons':
|
| 474 |
return t('N/A');
|
| 475 |
default :
|
| 476 |
return '';
|
| 477 |
}
|
| 478 |
}
|
| 479 |
|
| 480 |
/**
|
| 481 |
* Create an array of the allowed values for this field
|
| 482 |
*/
|
| 483 |
function explainfield_allowed_values($field) {
|
| 484 |
static $allowed_values;
|
| 485 |
|
| 486 |
if ($allowed_values[$field['field_name']]) {
|
| 487 |
return $allowed_values[$field['field_name']];
|
| 488 |
}
|
| 489 |
|
| 490 |
$allowed_values[$field['field_name']] = array();
|
| 491 |
if ($field['allowed_values_php']) {
|
| 492 |
ob_start();
|
| 493 |
$result = eval($field['allowed_values_php']);
|
| 494 |
if (is_array($result)) {
|
| 495 |
$allowed_values[$field['field_name']] = $result;
|
| 496 |
}
|
| 497 |
ob_end_clean();
|
| 498 |
}
|
| 499 |
if (!$allowed_values[$field['field_name']]) {
|
| 500 |
|
| 501 |
$list = explode("\n", $field['allowed_values']);
|
| 502 |
$list = array_map('trim', $list);
|
| 503 |
$list = array_filter($list, 'strlen');
|
| 504 |
foreach ($list as $opt) {
|
| 505 |
list($key, $value) = explode('|', $opt);
|
| 506 |
$allowed_values[$field['field_name']][$key] = $value ? $value : $key;
|
| 507 |
}
|
| 508 |
}
|
| 509 |
|
| 510 |
return $allowed_values[$field['field_name']];
|
| 511 |
}
|
| 512 |
|
| 513 |
function _misc_formize($string) {
|
| 514 |
return strtolower(str_replace('_', '-', $string));
|
| 515 |
}
|
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