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paragraphs.field_widget.inc
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paragraphs.field_widget.inc
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<?php
/**
* @file
* Holds functions for the paragraphs widgets.
*/
/**
* Implements hook_field_widget_info().
*/
function paragraphs_field_widget_info() {
return array(
'paragraphs_hidden' => array(
'label' => t('Hidden'),
'field types' => array('paragraphs'),
'behaviors' => array(
'multiple values' => FIELD_BEHAVIOR_CUSTOM,
'default value' => FIELD_BEHAVIOR_NONE,
),
),
'paragraphs_embed' => array(
'label' => t('Embedded'),
'field types' => array('paragraphs'),
'behaviors' => array(
'multiple values' => FIELD_BEHAVIOR_CUSTOM,
'default value' => FIELD_BEHAVIOR_NONE,
),
),
);
}
/**
* Implements hook_field_widget_form().
*/
function paragraphs_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
switch ($instance['widget']['type']) {
case 'paragraphs_hidden':
return $element;
case 'paragraphs_embed':
return paragraphs_field_multiple_value_form($field, $instance, $langcode, $items, $form, $form_state, $delta, $element);
}
}
/**
* Special handling to create form elements for multiple values.
*
* Handles generic features for multiple fields:
* - number of widgets
* - AHAH-'add more' button
* - drag-n-drop value reordering.
*/
function paragraphs_field_multiple_value_form($field, $instance, $langcode, $items, &$form, &$form_state, $delta, $original_element) {
$field_name = $field['field_name'];
$parents = $form['#parents'];
$field_state = field_form_get_state($parents, $field_name, $langcode, $form_state);
$max = $field_state['items_count'] - 1;
$title = check_plain($instance['label']);
$description = field_filter_xss($instance['description']);
$id_prefix = implode('-', array_merge($parents, array($field_name)));
$wrapper_id = backdrop_html_id($id_prefix . '-add-more-wrapper');
$field_elements = array();
$function = $instance['widget']['module'] . '_field_widget_form_build';
$had_first = FALSE;
$actual_item_count = 0;
if (function_exists($function)) {
for ($delta = 0; $delta <= $max; $delta++) {
$multiple = TRUE;
$element = array(
'#entity_type' => $original_element['#entity_type'],
'#entity' => $original_element['#entity'],
'#bundle' => $original_element['#bundle'],
'#field_name' => $field_name,
'#language' => $langcode,
'#field_parents' => $parents,
'#columns' => array_keys($field['columns']),
// For multiple fields, title and description are handled by the
// wrapping table.
'#title' => $multiple ? '' : $title,
'#description' => $multiple ? '' : $description,
'#delta' => $delta,
'#weight' => $delta,
'#wrapper_id' => $wrapper_id,
);
if ($element = $function($form, $form_state, $field, $instance, $langcode, $items, $delta, $element)) {
// Input field for the delta (drag-n-drop reordering).
if ($multiple) {
// We name the element '_weight' to avoid clashing with elements
// defined by widget.
$element['_weight'] = array(
'#type' => 'weight',
'#title' => t('Weight for row @number', array('@number' => $delta + 1)),
'#title_display' => 'invisible',
// Note: this 'delta' is the FAPI 'weight' element's property.
'#delta' => $max,
'#default_value' => isset($items[$delta]['_weight']) ? $items[$delta]['_weight'] : $delta,
'#weight' => 100,
);
}
// Because our deleted elements are still in the form, only the first
// shown element is required.
if (!$had_first && (!isset($element['#access']) || $element['#access'])) {
$had_first = TRUE;
$element['#required'] = $instance['required'];
}
if (!isset($element['#access']) || $element['#access']) {
$actual_item_count++;
}
// Allow modules to alter the field widget form element.
$context = array(
'form' => $form,
'field' => $field,
'instance' => $instance,
'langcode' => $langcode,
'items' => $items,
'delta' => $delta,
);
backdrop_alter(array('paragraphs_field_widget_form', 'paragraphs_field_widget_' . $instance['widget']['type'] . '_form'), $element, $form_state, $context);
$field_elements[$delta] = $element;
}
}
$field_state = field_form_get_state($parents, $field_name, $langcode, $form_state);
$field_state['real_items_count'] = $actual_item_count;
field_form_set_state($parents, $field_name, $langcode, $form_state, $field_state);
$field_elements += array(
'#theme' => 'paragraphs_field_multiple_value_form',
'#field_name' => $field['field_name'],
'#cardinality' => $field['cardinality'],
'#title' => $title,
'#required' => $instance['required'],
'#description' => $description,
'#prefix' => '<div id="' . $wrapper_id . '">',
'#suffix' => '</div>',
'#max_delta' => $max,
'#instance' => $instance,
'#element_validate' => array('_paragraphs_multiple_field_validate'),
);
$field_elements += _paragraphs_add_more_buttons($instance, $langcode, $form_state, $field_state, $original_element, $id_prefix, $wrapper_id);
}
if (module_exists('file')) {
// file.js triggers uploads when the main Submit button is clicked.
$field_elements['#attached']['js'] = array(
backdrop_get_path('module', 'file') . '/js/file.js',
array(
'data' => backdrop_get_path('module', 'paragraphs') . '/paragraphs.js',
'type' => 'file',
'weight' => 9999,
),
);
$form_state['has_file_element'] = TRUE;
}
return $field_elements;
}
/**
* Helper function to generate "Add more" buttons for a form.
*
* @return array
* Array of field elements to add to your form.
*/
function _paragraphs_add_more_buttons($instance, $langcode, $form_state, $field_state, $original_element, $id_prefix, $wrapper_id) {
$field = $field_state['field'];
$field_name = $field['field_name'];
$field_elements = array();
$parents = (!empty($form_state['field']['#parents'])) ? $form_state['field']['#parents'] : array();
// Add 'add more' button, if not working with a programmed form.
if (empty($form_state['programmed'])) {
$available_bundles = paragraphs_bundle_load();
$select_bundles = array();
$select_bundles_weighted = array();
// By default, consider that no bundle has been explicitly picked.
$explicitly_enabled = FALSE;
foreach ($instance['settings']['allowed_bundles'] as $allowed_bundle_key => $allowed_bundle_value) {
if ($allowed_bundle_key === $allowed_bundle_value && isset($available_bundles[$allowed_bundle_key])) {
$select_bundles[$available_bundles[$allowed_bundle_key]->bundle] = $available_bundles[$allowed_bundle_key]->label;
// If an item has been explicitly selected, raise our flag.
$explicitly_enabled = TRUE;
}
elseif (isset($available_bundles[$allowed_bundle_key]->bundle)) {
$select_bundles_weighted[$available_bundles[$allowed_bundle_key]->bundle] = $available_bundles[$allowed_bundle_key]->label;
}
}
// If no bundle has been explicitly selected, give access to all of them.
if (!$explicitly_enabled) {
$select_bundles = $select_bundles_weighted;
foreach ($available_bundles as $bundle) {
if (!isset($select_bundles[$bundle->bundle])) {
$select_bundles[$bundle->bundle] = $bundle->label;
}
}
}
$removed_a_bundle = FALSE;
$weight = 0;
foreach ($select_bundles as $machine_name => $bundle) {
$select_bundles[$machine_name] = array(
'name' => $bundle,
'weight' => $weight,
);
/* @var $entity_shell ParagraphsItemEntity */
$entity_shell = entity_create('paragraphs_item', array('bundle' => $machine_name, 'field_name' => $field_name));
$entity_shell->setHostEntity($original_element['#entity_type'], $original_element['#entity'], $langcode, FALSE);
if (!entity_access('create', 'paragraphs_item', $entity_shell)) {
unset($select_bundles[$machine_name]);
$removed_a_bundle = TRUE;
}
elseif (isset($instance['settings']['bundle_weights'][$machine_name])) {
$select_bundles[$machine_name]['weight'] = $instance['settings']['bundle_weights'][$machine_name];
}
$weight++;
}
$field_elements['#select_bundles'] = $select_bundles;
if ($removed_a_bundle && count($select_bundles) === 0) {
$field_elements['add_more'] = array(
'#type' => 'container',
'#tree' => TRUE,
);
$field_elements['add_more']['add_more'] = array(
'#type' => 'markup',
'#markup' => '<em>' . t('You are not allowed to add any of the bundles.') . '</em>',
);
}
elseif (count($select_bundles)) {
// uasort($select_bundles, 'backdrop_sort_weight');
backdrop_sort($select_bundles, array('weight' => SORT_NUMERIC));
if ($field['cardinality'] == FIELD_CARDINALITY_UNLIMITED || $field_state['real_items_count'] < $field['cardinality']) {
if (!isset($instance['settings']['title'])) {
$instance['settings']['title'] = PARAGRAPHS_DEFAULT_TITLE;
}
$instance_title = t($instance['settings']['title']);
$field_elements['add_more'] = array(
'#type' => 'container',
'#tree' => TRUE,
);
$add_mode = (isset($instance['settings']['add_mode']) ? $instance['settings']['add_mode'] : PARAGRAPHS_DEFAULT_ADD_MODE);
if ($add_mode == 'button') {
foreach ($select_bundles as $machine_name => $bundle) {
/* @var $entity_shell ParagraphsItemEntity */
$entity_shell = entity_create('paragraphs_item', array('bundle' => $machine_name, 'field_name' => $field_name));
$entity_shell->setHostEntity($original_element['#entity_type'], $original_element['#entity'], $langcode, FALSE);
$field_elements['add_more']['add_more_bundle_' . $machine_name] = array(
'#type' => 'submit',
'#name' => strtr($id_prefix, '-', '_') . '_add_more_add_more_bundle_' . $machine_name,
'#value' => t('Add !title', array('!title' => $bundle['name'])),
'#access' => entity_access('create', 'paragraphs_item', $entity_shell),
'#attributes' => array('class' => array('field-add-more-submit', 'paragraphs-add-more-submit')),
'#limit_validation_errors' => array(),
'#submit' => array('paragraphs_add_more_submit'),
'#ajax' => array(
'callback' => 'paragraphs_add_more_js',
'wrapper' => $wrapper_id,
'effect' => 'fade',
),
);
}
}
else {
// uasort($select_bundles, 'backdrop_sort_weight');
backdrop_sort($select_bundles, array('weight' => SORT_NUMERIC));
$select_list = array();
foreach ($select_bundles as $machine_name => $bundle) {
$select_list[$machine_name] = $bundle['name'];
}
$field_elements['add_more']['type'] = array(
'#type' => 'select',
'#name' => strtr($id_prefix, '-', '_') . '_add_more_type',
'#title' => t('!title type', array('!title' => $instance_title)),
'#options' => $select_list,
'#attributes' => array('class' => array('field-add-more-type')),
'#limit_validation_errors' => array(
array_merge($parents, array($field_name, $langcode)),
),
);
// Hide the bundle selection if only one bundle is allowed.
if (count($select_list) == 1) {
$field_elements['add_more']['type']['#type'] = 'hidden';
$keys = array_keys($select_list);
$field_elements['add_more']['type']['#value'] = $keys[0];
}
if (isset($form_state['input'][strtr($id_prefix, '-', '_') . '_add_more_type'])) {
$field_elements['add_more']['type']['#default_value'] = $form_state['input'][strtr($id_prefix, '-', '_') . '_add_more_type'];
}
$text = t('Add new !title', array('!title' => $instance_title));
$max = $field_state['items_count'] - 1;
if ($max >= 0) {
$text = t('Add another !title', array('!title' => $instance_title));
}
$field_elements['add_more']['add_more'] = array(
'#type' => 'submit',
'#name' => strtr($id_prefix, '-', '_') . '_add_more_add_more',
'#value' => $text,
'#attributes' => array('class' => array('field-add-more-submit', 'paragraphs-add-more-submit')),
'#limit_validation_errors' => array(),
'#submit' => array('paragraphs_add_more_submit'),
'#ajax' => array(
'callback' => 'paragraphs_add_more_js',
'wrapper' => $wrapper_id,
'effect' => 'fade',
),
);
}
}
}
else {
$field_elements['add_more']['add_more'] = array(
'#type' => 'markup',
'#markup' => '<em>' . t('No Paragraph types available, edit field settings') . '</em>',
);
}
}
return $field_elements;
}
/**
* Widget form implementation for paragraphs.
*
* @param array $form
* The form structure where widgets are being attached to. This might be a
* full form structure, or a sub-element of a larger form.
* @param array $form_state
* An associative array containing the current state of the form.
* @param array $field
* The field structure.
* @param array $instance
* The field instance.
* @param string $langcode
* The language associated with $items.
* @param array $items
* Array of default values for this field.
* @param int $delta
* The order of this item in the array of subelements (0, 1, 2, etc).
* @param array $element
* A form element array containing basic properties for the widget.
*
* @return array
* The form elements for a single widget for this field.
*/
function paragraphs_field_widget_form_build(array &$form, array &$form_state, array $field, array $instance, $langcode, array $items, $delta, array $element) {
static $recursion = 0;
if (!isset($instance['settings']['title'])) {
$instance['settings']['title'] = PARAGRAPHS_DEFAULT_TITLE;
}
$instance_title = t($instance['settings']['title']);
if (!isset($instance['settings']['title_multiple'])) {
$instance['settings']['title_multiple'] = PARAGRAPHS_DEFAULT_TITLE_MULTIPLE;
}
// If the paragraphs item form contains another paragraph,
// we might ran into a recursive loop. Prevent that.
if ($recursion++ > PARAGRAPHS_RECURSION_LIMIT) {
backdrop_set_message(t('The Paragraphs item form has not been embedded to avoid recursive loops.'), 'error');
return $element;
}
$field_parents = $element['#field_parents'];
$field_name = $element['#field_name'];
$language = $element['#language'];
// Set host entity data since field_attach_form() overrides the $element
// values with the values for the paragraphs item.
$element['#host_entity_type'] = $element['#entity_type'];
$element['#host_entity'] = $element['#entity'];
$element['#host_bundle'] = $element['#bundle'];
$bundle = FALSE;
$id_prefix = implode('-', array_merge($field_parents, array($field_name)));
if (isset($form_state['input'][strtr($id_prefix, '-', '_') . '_add_more_type'])) {
$bundle = $form_state['input'][strtr($id_prefix, '-', '_') . '_add_more_type'];
}
elseif (isset($form_state['input']['_triggering_element_name'])) {
if (strpos($form_state['input']['_triggering_element_name'], strtr($id_prefix, '-', '_') . '_add_more_add_more_bundle_') === 0) {
$bundle = substr($form_state['input']['_triggering_element_name'], backdrop_strlen(strtr($id_prefix, '-', '_') . '_add_more_add_more_bundle_'));
}
}
// Nest the paragraphs item entity form in a dedicated parent space,
// by appending [field_name, langcode, delta] to the current parent space.
// That way the form values of the paragraphs item are separated.
$parents = array_merge($field_parents, array($field_name, $language, $delta));
$element += array(
'#element_validate' => array('paragraphs_field_widget_embed_validate'),
'#parents' => $parents,
);
$field_state = field_form_get_state($field_parents, $field_name, $language, $form_state);
$deleted_paragraph = FALSE;
$confirmed_deleted_paragraph = FALSE;
$is_new_paragraph = FALSE;
$unpublished_paragraph = FALSE;
$default_edit_mode = isset($instance['settings']['default_edit_mode']) ? $instance['settings']['default_edit_mode'] : PARAGRAPHS_DEFAULT_EDIT_MODE;
$default_edit_mode_override = isset($instance['settings']['default_edit_mode_override']) ? $instance['settings']['default_edit_mode_override'] : PARAGRAPHS_DEFAULT_EDIT_MODE_OVERRIDE;
$force_open = (!empty($instance['widget']['paragraphs_edit_mode_open']) || count($items) < $default_edit_mode_override);
$being_edited_paragraph = ($default_edit_mode === 'open');
if (isset($field_state['entity'][$delta])) {
if (isset($field_state['entity'][$delta]->removed) && $field_state['entity'][$delta]->removed) {
$deleted_paragraph = TRUE;
}
if (isset($field_state['entity'][$delta]->confirmed_removed) && $field_state['entity'][$delta]->confirmed_removed) {
$confirmed_deleted_paragraph = TRUE;
}
if ($being_edited_paragraph || (isset($field_state['entity'][$delta]->being_edited) && $field_state['entity'][$delta]->being_edited)) {
$being_edited_paragraph = TRUE;
}
else {
$being_edited_paragraph = FALSE;
}
/* @var $paragraphs_item ParagraphsItemEntity */
$paragraphs_item = $field_state['entity'][$delta];
$paragraphs_item->setHostEntity($element['#host_entity_type'], $element['#host_entity'], $langcode, FALSE);
}
else {
if (isset($items[$delta])) {
$paragraphs_item = paragraphs_field_get_entity($items[$delta]);
}
// Show an empty collection if we have no existing one or it does not load.
if (empty($paragraphs_item) && $bundle) {
/* @var $paragraphs_item ParagraphsItemEntity */
$paragraphs_item = entity_create('paragraphs_item', array('bundle' => $bundle, 'field_name' => $field_name));
$paragraphs_item->being_edited = TRUE;
$being_edited_paragraph = TRUE;
$is_new_paragraph = TRUE;
}
if (!empty($paragraphs_item)) {
/* @var $paragraphs_item ParagraphsItemEntity */
$paragraphs_item->setHostEntity($element['#host_entity_type'], $element['#host_entity'], $langcode, FALSE);
if ($force_open) {
$paragraphs_item->being_edited = TRUE;
$being_edited_paragraph = TRUE;
}
// Put our entity in the form state, so FAPI callbacks can access it.
$field_state['entity'][$delta] = $paragraphs_item;
}
}
field_form_set_state($field_parents, $field_name, $language, $form_state, $field_state);
if (!empty($paragraphs_item)) {
$bundle_info = paragraphs_bundle_load($paragraphs_item->bundle);
if ($bundle_info) {
$element['paragraph_bundle_title'] = array(
'#type' => 'container',
'#weight' => -100,
);
$element['paragraph_bundle_title']['info'] = array(
'#markup' => t('@title type: %bundle', array('@title' => $instance_title, '%bundle' => $bundle_info->label)),
);
}
$element['inner_actions'] = array(
'#type' => 'container',
'#weight' => 9999,
);
if (!$deleted_paragraph) {
field_attach_form('paragraphs_item', $paragraphs_item, $element, $form_state, $language);
if ($being_edited_paragraph) {
if (!$is_new_paragraph && !entity_access('update', 'paragraphs_item', $paragraphs_item)) {
foreach (element_children($element) as $key) {
if ($key != 'paragraph_bundle_title' && $key != 'inner_actions' && $key != 'paragraph_bundle_preview' && $key != 'access_info') {
$element[$key]['#access'] = FALSE;
}
}
$element['access_info'] = array(
'#type' => 'container',
'#weight' => 9998,
);
$element['access_info']['info'] = array(
'#type' => 'markup',
'#markup' => '<em>' . t('You are not allowed to edit this @title item.', array('@title' => $instance_title)) . '</em>',
);
}
else {
if (empty($element['#required'])) {
$element['#after_build'][] = 'paragraphs_field_widget_embed_delay_required_validation';
}
}
if ($default_edit_mode != 'open') {
$element['inner_actions']['collapse_button'] = array(
'#delta' => $delta,
'#name' => implode('_', $parents) . '_collapse_button',
'#type' => 'submit',
'#value' => t('Collapse'),
'#validate' => array(),
'#submit' => array('paragraphs_collapse_submit'),
'#limit_validation_errors' => array($parents),
'#ajax' => array(
'callback' => '_paragraphs_ajax_update_callback',
'effect' => 'fade',
'wrapper' => $element['#wrapper_id'],
),
'#access' => entity_access('update', 'paragraphs_item', $paragraphs_item),
'#weight' => 999,
);
}
}
else {
if ($default_edit_mode === 'preview' && entity_access('view', 'paragraphs_item', $paragraphs_item)) {
$element['paragraph_bundle_preview'] = array(
'#type' => 'container',
);
$preview = $paragraphs_item->view('paragraphs_editor_preview', $langcode);
$element['paragraph_bundle_preview']['preview'] = $preview;
}
foreach (element_children($element) as $key) {
if ($key != 'paragraph_bundle_title' && $key != 'inner_actions' && $key != 'paragraph_bundle_preview' && $key != 'access_info') {
$element[$key]['#access'] = FALSE;
}
}
if (isset($field_state['entity'][$delta]->must_be_saved) && $field_state['entity'][$delta]->must_be_saved) {
$markup = '<div class="messages warning">';
if (config_get('system.core', 'messages_dismissible')) {
// Add the 'Dismiss' library and place a 'Dismiss' link on messages.
backdrop_add_library('system', 'backdrop.dismiss');
$markup .= '<a href="#" class="dismiss" title="' . t('Dismiss') . '"><span class="element-invisible">' . t('Dismiss') . '</span></a>' . "\n";
}
$markup .= t('This content must be saved to record recent changes.');
$markup .= '</div>';
$element['inner_actions']['must_be_saved'] = array(
'#markup' => $markup,
'#weight' => 998,
);
}
$element['inner_actions']['edit_button'] = array(
'#delta' => $delta,
'#name' => implode('_', $parents) . '_edit_button',
'#type' => 'submit',
'#value' => t('Edit'),
'#validate' => array(),
'#submit' => array('paragraphs_edit_submit'),
'#limit_validation_errors' => array(),
'#ajax' => array(
'callback' => '_paragraphs_ajax_update_callback',
'effect' => 'fade',
'wrapper' => $element['#wrapper_id'],
),
'#access' => entity_access('update', 'paragraphs_item', $paragraphs_item),
'#weight' => 999,
);
}
if (isset($paragraphs_item)) {
if (!empty($bundle_info->allow_unpublish)) {
if ($paragraphs_item->status) {
$button_value = t('Unpublish');
}
else {
$button_value = t('Publish');
$unpublished_paragraph = TRUE;
}
$element['inner_actions']['togglepublish_button'] = array(
'#delta' => $delta,
'#name' => implode('_', $parents) . '_togglepublish_button',
'#type' => 'submit',
'#value' => $button_value,
'#validate' => array(),
'#submit' => array(
'paragraphs_togglepublish_submit',
),
'#limit_validation_errors' => array($parents),
'#ajax' => array(
'callback' => '_paragraphs_ajax_update_callback',
'effect' => 'fade',
'wrapper' => $element['#wrapper_id'],
),
'#access' => entity_access('update', 'paragraphs_item', $paragraphs_item),
'#weight' => 1000,
);
}
$element['inner_actions']['remove_button'] = array(
'#delta' => $delta,
'#name' => implode('_', $parents) . '_remove_button',
'#type' => 'submit',
'#value' => t('Remove'),
'#validate' => array(),
'#submit' => array('paragraphs_remove_submit'),
'#limit_validation_errors' => array(),
'#ajax' => array(
'callback' => '_paragraphs_ajax_update_callback',
'effect' => 'fade',
'wrapper' => $element['#wrapper_id'],
),
'#access' => entity_access('delete', 'paragraphs_item', $paragraphs_item),
'#weight' => 1001,
'#attributes' => array(
'class' => array('button-danger'),
),
);
}
if (isset($element['inner_actions']['edit_button']) && !$element['inner_actions']['edit_button']['#access']
&& isset($element['inner_actions']['remove_button']) && !$element['inner_actions']['remove_button']['#access']) {
$element['access_info'] = array(
'#type' => 'container',
'#weight' => 9998,
);
$element['access_info']['info'] = array(
'#type' => 'markup',
'#markup' => '<em>' . t('You are not allowed to edit or remove this @title item.', array('@title' => $instance_title)) . '</em>',
);
}
elseif (isset($element['inner_actions']['edit_button']) && !$element['inner_actions']['edit_button']['#access']) {
$element['access_info'] = array(
'#type' => 'container',
'#weight' => 9998,
);
$element['access_info']['info'] = array(
'#type' => 'markup',
'#markup' => '<em>' . t('You are not allowed to edit this @title item.', array('@title' => $instance_title)) . '</em>',
);
}
elseif (isset($element['inner_actions']['remove_button']) && !$element['inner_actions']['remove_button']['#access']) {
$element['access_info'] = array(
'#type' => 'container',
'#weight' => 9998,
);
$element['access_info']['info'] = array(
'#type' => 'markup',
'#markup' => '<em>' . t('You are not allowed to remove this @title item.', array('@title' => $instance_title)) . '</em>',
);
}
}
else {
$remove_button = '<p>' . t('This @title has been removed.', array('@title' => $instance_title)) . ' </p>';
$remove_button .= '<div class="messages warning">';
if (config_get('system.core', 'messages_dismissible')) {
// Add the 'Dismiss' library and place a 'Dismiss' link on messages.
backdrop_add_library('system', 'backdrop.dismiss');
$remove_button .= '<a href="#" class="dismiss" title="' . t('Dismiss') . '"><span class="element-invisible">' . t('Dismiss') . '</span></a>' . "\n";
}
$remove_button .= t('This @title will be permanently deleted when you press %confirm or save this page. (You can restore it with the %restore button or by closing this screen without saving.)', array(
'@title' => $instance_title,
'%confirm' => t('Confirm Deletion'),
'%restore' => t('Restore'),
));
$remove_button .= '</div>';
$element['inner_actions']['remove_button'] = array(
'#markup' => $remove_button,
);
$element['inner_actions']['restore_button'] = array(
'#delta' => $delta,
'#name' => implode('_', $parents) . '_restore_button',
'#type' => 'submit',
'#value' => t('Restore'),
'#validate' => array(),
'#submit' => array('paragraphs_restore_submit'),
'#limit_validation_errors' => array(),
'#ajax' => array(
'callback' => '_paragraphs_ajax_update_callback',
'effect' => 'fade',
'wrapper' => $element['#wrapper_id'],
),
'#weight' => 1000,
);
$element['inner_actions']['confirm_delete_button'] = array(
'#delta' => $delta,
'#name' => implode('_', $parents) . '_deleteconfirm_button',
'#type' => 'submit',
'#value' => t('Confirm Deletion'),
'#validate' => array(),
'#submit' => array('paragraphs_deleteconfirm_submit'),
'#limit_validation_errors' => array(),
'#ajax' => array(
'callback' => '_paragraphs_ajax_update_callback',
'effect' => 'fade',
'wrapper' => $element['#wrapper_id'],
),
'#weight' => 1001,
'#attributes' => array(
'class' => array('button-danger'),
),
);
}
}
// Hide full item when we are confirmed delete.
if ($confirmed_deleted_paragraph) {
$element['#access'] = FALSE;
}
// Add class if this is unpublished or deleted.
$class = '';
if ($deleted_paragraph) {
$class = 'removed';
}
elseif ($unpublished_paragraph) {
$class = 'unpublished';
}
if (!empty($class)) {
$element['paragraph_bundle_title']['#attributes'] = array(
'class' => array(
$class,
),
);
}
$recursion--;
return $element;
}
/**
* FAPI #ajax callback to update a paragraphs item.
*/
function _paragraphs_ajax_update_callback($form, $form_state) {
// Get the information on what we're updating.
$button = $form_state['triggering_element'];
// Go three levels up in the form, to the whole widget.
$element = backdrop_array_get_nested_value($form, array_slice($button['#array_parents'], 0, -3));
// Send back the rendered element and let Backdrop wrap it in an AJAX command.
return backdrop_render($element);
}
/**
* After-build callback to validate an individual paragraphs element.
*
* @param array $element
* A form element array containing basic properties of the paragraphs element.
* @param array $form_state
* An associative array containing the current state of the form.
*/
function paragraphs_field_widget_embed_delay_required_validation(array &$element, array &$form_state) {
// If the process_input flag is set, the form and its input is going to be
// validated. Prevent #required (sub)fields from throwing errors while
// their non-#required paragraphs item is empty.
if ($form_state['process_input']) {
_paragraphs_collect_required_elements($element, $element['#paragraphs_required_elements']);
}
return $element;
}
/**
* Collects all embedded required fields.
*
* @param array $element
* A form element array containing basic properties of the paragraphs element.
* @param array|null $required_elements
* An array containing required paragraphs elements.
*/
function _paragraphs_collect_required_elements(array &$element, &$required_elements = array()) {
// Recurse through all children.
foreach (element_children($element) as $key) {
if (isset($element[$key]) && $element[$key]) {
_paragraphs_collect_required_elements($element[$key], $required_elements);
}
}
if (!empty($element['#required'])) {
$required_elements[] = &$element;
$element += array('#pre_render' => array());
array_unshift($element['#pre_render'], 'paragraphs_field_widget_render_required');
}
}
/**
* Pre-render callback that ensures the element is rendered as being required.
*/
function paragraphs_field_widget_render_required($element) {
$element['#required'] = TRUE;
return $element;
}
/**
* FAPI validation of an individual paragraphs element.
*
* @param array $element
* A form element array containing basic properties of the paragraphs element.
* @param array $form_state
* An associative array containing the current state of the form.
* @param array $complete_form
* The form structure array.
*/
function paragraphs_field_widget_embed_validate(array $element, array &$form_state, array $complete_form) {
$field_parents = $element['#field_parents'];
$field_name = $element['#field_name'];
$language = $element['#language'];
$field_state = field_form_get_state($field_parents, $field_name, $language, $form_state);
if (isset($field_state['entity'][$element['#delta']])) {
$paragraphs_item = $field_state['entity'][$element['#delta']];
// Now validate elements if the entity is not empty.
if (((!isset($paragraphs_item->removed) || !$paragraphs_item->removed) && (!isset($paragraphs_item->confirmed_removed) || !$paragraphs_item->confirmed_removed))) {
// Attach field API validation of the embedded form.
field_attach_form_validate('paragraphs_item', $paragraphs_item, $element, $form_state);
if (!empty($element['#paragraphs_required_elements'])) {
foreach ($element['#paragraphs_required_elements'] as &$elements) {
// Copied from _form_validate().
if (isset($elements['#needs_validation'])) {
$is_countable = is_array($elements['#value']) || $elements['#value'] instanceof Countable;
$is_empty_multiple = $is_countable && (!count($elements['#value']));
$is_empty_string = (is_string($elements['#value']) && backdrop_strlen(trim($elements['#value'])) == 0);
$is_empty_value = ($elements['#value'] === 0);
if ($is_empty_multiple || $is_empty_string || $is_empty_value) {
if (isset($elements['#title'])) {
$error_text = t('The !name field is required.', array('!name' => $elements['#title']));
form_error($elements, filter_xss_admin($error_text));
}
else {
form_error($elements);
}
}
}
}
}
}
// Only if the form is being submitted, finish the collection entity and
// prepare it for saving.
if ($form_state['submitted']) {
$errors = form_get_errors();
if (module_exists('conditional_fields') && isset($form_state['conditional_fields_untriggered_dependents'])) {
// Conditional_fields will remove errors which occurred on "untriggered
// fields" and only remove them via the form-level validation handlers.
foreach ($form_state['conditional_fields_untriggered_dependents'] as $conditional_error) {
if (isset($conditional_error['errors'])) {
foreach ($conditional_error['errors'] as $key => $error) {
unset($errors[$key]);
}
}
}
}
if (!$errors) {
field_attach_submit('paragraphs_item', $paragraphs_item, $element, $form_state);
// Load initial form values into $item, so any other form values below
// the same parents are kept.
$item = backdrop_array_get_nested_value($form_state['values'], $element['#parents']);
// Set the _weight if it is a multiple field.
if (isset($element['_weight'])) {
$item['_weight'] = $element['_weight']['#value'];
}
// Put the paragraphs item in $item['entity'], so it is saved with
// the host entity via hook_field_presave() if it is not empty.
// @see paragraph_field_presave()
$item['entity'] = $paragraphs_item;
form_set_value($element, $item, $form_state);
}
}
}
}
/**
* Submit function to add another paragraph.
*
* @param array $form
* The form structure array.
* @param array $form_state
* An associative array containing the current state of the form.
*/
function paragraphs_add_more_submit(array $form, array &$form_state) {
$button = $form_state['triggering_element'];
// Go one level up in the form, to the widgets container.
$element = backdrop_array_get_nested_value($form, array_slice($button['#array_parents'], 0, -2));
$field_name = $element['#field_name'];
$langcode = $element['#language'];
$parents = $element['#field_parents'];
// Increment the items count.
$field_state = field_form_get_state($parents, $field_name, $langcode, $form_state);
$field = $field_state['field'];
if ($field['cardinality'] == FIELD_CARDINALITY_UNLIMITED || $field_state['real_items_count'] < $field['cardinality']) {
$field_state['items_count']++;
}
field_form_set_state($parents, $field_name, $langcode, $form_state, $field_state);
$form_state['rebuild'] = TRUE;
}
/**
* Form Validation for submitting a node with required paragraphs fields.
*/
function _paragraphs_multiple_field_validate($elements, &$form_state) {
// Check child fields of required paragraphs.
if (!empty($elements['#required'])) {
$field_values = array();
$field_state = field_form_get_state($elements['#field_parents'], $elements['#field_name'], $elements['#language'], $form_state);
$field_info = field_info_field($elements['#field_name']);
if (empty($elements['#parents'])) {
// Try top level structure if there are no parents.
if (!empty($form_state['values'][$elements['#field_name']][LANGUAGE_NONE])) {
$field_values = $form_state['values'][$elements['#field_name']][LANGUAGE_NONE];
}
}
else {
// Extract field values.
$key_exists = NULL;
$field_values_found = backdrop_array_get_nested_value($form_state['values'], $elements['#parents'], $key_exists);
if ($key_exists) {
$field_values = $field_values_found;
}
}
if ($field_values) {
foreach (array_keys($field_values) as $item_key) {
if (!is_numeric($item_key)) {
// Remove non field item deltas.
unset($field_values[$item_key]);
}
elseif (isset($field_state['entity'][$item_key])) {
// Handle field item entity forms that build new objects in the field
// state. Examples: field_collection_item, paragraphs_item.
// If this is not set, then the field_is_empty check in
// _field_filter_items() fails.
$field_values[$item_key] = array(
'entity' => $field_state['entity'][$item_key],
);
}
}
// Get non-empty items.
$field_values = _field_filter_items($field_info, $field_values);
}
if (count($field_values) < 1) {
form_error($elements, t('The "!name" field is required.', array(
'!name' => $elements['#title'],
)));
}
}
}
/**
* Ajax callback in response to a new empty widget being added to the form.
*
* This returns the new page content to replace the page content made obsolete
* by the form submission.
*
* @param array $form
* The form structure array.
* @param array $form_state
* An associative array containing the current state of the form.
*
* @see field_add_more_submit()
*/
function paragraphs_add_more_js(array $form, array $form_state) {
$button = $form_state['triggering_element'];
// Go one level up in the form, to the widgets container.