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<?php
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/**
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* @file
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* Defines simple text field types.
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*/
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/**
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* Implements hook_help().
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*/
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function text_help($path, $arg) {
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switch ($path) {
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case 'admin/help#text':
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$output = '';
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$output .= '<h3>' . t('About') . '</h3>';
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$output .= '<p>' . t("The Text module defines various text field types for the Field module. A text field may contain plain text only, or optionally, may use Drupal's <a href='@filter-help'>text filters</a> to securely manage HTML output. Text input fields may be either a single line (text field), multiple lines (text area), or for greater input control, a select box, checkbox, or radio buttons. If desired, the field can be validated, so that it is limited to a set of allowed values. See the <a href='@field-help'>Field module help page</a> for more information about fields.", array('@field-help' => url('admin/help/field'), '@filter-help' => url('admin/help/filter'))) . '</p>';
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return $output;
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}
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}
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/**
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* Implements hook_field_info().
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*
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* Field settings:
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* - max_length: the maximum length for a varchar field.
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* Instance settings:
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* - text_processing: whether text input filters should be used.
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* - display_summary: whether the summary field should be displayed.
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* When empty and not displayed the summary will take its value from the
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* trimmed value of the main text field.
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*/
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function text_field_info() {
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return array(
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'text' => array(
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'label' => t('Text'),
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'description' => t('This field stores varchar text in the database.'),
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'settings' => array('max_length' => 255),
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'instance_settings' => array('text_processing' => 0),
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'default_widget' => 'text_textfield',
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'default_formatter' => 'text_default',
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),
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'text_long' => array(
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'label' => t('Long text'),
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'description' => t('This field stores long text in the database.'),
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'instance_settings' => array('text_processing' => 0),
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'default_widget' => 'text_textarea',
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'default_formatter' => 'text_default',
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),
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'text_with_summary' => array(
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'label' => t('Long text and summary'),
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'description' => t('This field stores long text in the database along with optional summary text.'),
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'instance_settings' => array('text_processing' => 1, 'display_summary' => 0),
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'default_widget' => 'text_textarea_with_summary',
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'default_formatter' => 'text_default',
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),
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);
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}
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/**
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* Implements hook_field_settings_form().
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*/
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function text_field_settings_form($field, $instance, $has_data) {
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$settings = $field['settings'];
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$form = array();
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if ($field['type'] == 'text') {
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$form['max_length'] = array(
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'#type' => 'textfield',
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'#title' => t('Maximum length'),
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'#default_value' => $settings['max_length'],
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'#required' => TRUE,
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'#description' => t('The maximum length of the field in characters.'),
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'#element_validate' => array('element_validate_integer_positive'),
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// @todo: If $has_data, add a validate handler that only allows
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// max_length to increase.
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'#disabled' => $has_data,
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);
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}
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return $form;
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}
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/**
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* Implements hook_field_instance_settings_form().
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*/
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function text_field_instance_settings_form($field, $instance) {
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$settings = $instance['settings'];
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$form['text_processing'] = array(
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'#type' => 'radios',
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'#title' => t('Text processing'),
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'#default_value' => $settings['text_processing'],
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'#options' => array(
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t('Plain text'),
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t('Filtered text (user selects text format)'),
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),
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);
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if ($field['type'] == 'text_with_summary') {
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$form['display_summary'] = array(
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'#type' => 'checkbox',
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'#title' => t('Summary input'),
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'#default_value' => $settings['display_summary'],
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'#description' => t('This allows authors to input an explicit summary, to be displayed instead of the automatically trimmed text when using the "Summary or trimmed" display type.'),
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);
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}
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return $form;
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}
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/**
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* Implements hook_field_validate().
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*
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* Possible error codes:
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* - 'text_value_max_length': The value exceeds the maximum length.
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* - 'text_summary_max_length': The summary exceeds the maximum length.
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*/
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function text_field_validate($entity_type, $entity, $field, $instance, $langcode, $items, &$errors) {
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foreach ($items as $delta => $item) {
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// @todo Length is counted separately for summary and value, so the maximum
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// length can be exceeded very easily.
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foreach (array('value', 'summary') as $column) {
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if (!empty($item[$column])) {
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if (!empty($field['settings']['max_length']) && drupal_strlen($item[$column]) > $field['settings']['max_length']) {
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switch ($column) {
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case 'value':
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$message = t('%name: the text may not be longer than %max characters.', array('%name' => $instance['label'], '%max' => $field['settings']['max_length']));
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break;
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case 'summary':
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$message = t('%name: the summary may not be longer than %max characters.', array('%name' => $instance['label'], '%max' => $field['settings']['max_length']));
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break;
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}
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$errors[$field['field_name']][$langcode][$delta][] = array(
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'error' => "text_{$column}_length",
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'message' => $message,
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);
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}
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}
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}
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}
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}
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/**
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* Implements hook_field_load().
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*
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* Where possible, generate the sanitized version of each field early so that
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* it is cached in the field cache. This avoids looking up from the filter cache
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* separately.
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*
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* @see text_field_formatter_view()
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*/
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function text_field_load($entity_type, $entities, $field, $instances, $langcode, &$items) {
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foreach ($entities as $id => $entity) {
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foreach ($items[$id] as $delta => $item) {
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// Only process items with a cacheable format, the rest will be handled
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// by formatters if needed.
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if (empty($instances[$id]['settings']['text_processing']) || filter_format_allowcache($item['format'])) {
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$items[$id][$delta]['safe_value'] = isset($item['value']) ? _text_sanitize($instances[$id], $langcode, $item, 'value') : '';
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if ($field['type'] == 'text_with_summary') {
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$items[$id][$delta]['safe_summary'] = isset($item['summary']) ? _text_sanitize($instances[$id], $langcode, $item, 'summary') : '';
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}
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}
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}
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}
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}
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/**
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* Implements hook_field_is_empty().
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*/
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function text_field_is_empty($item, $field) {
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if (!isset($item['value']) || $item['value'] === '') {
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return !isset($item['summary']) || $item['summary'] === '';
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}
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return FALSE;
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}
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/**
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* Implements hook_field_formatter_info().
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*/
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function text_field_formatter_info() {
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return array(
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'text_default' => array(
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'label' => t('Default'),
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'field types' => array('text', 'text_long', 'text_with_summary'),
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),
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'text_plain' => array(
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'label' => t('Plain text'),
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'field types' => array('text', 'text_long', 'text_with_summary'),
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),
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// The text_trimmed formatter displays the trimmed version of the
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// full element of the field. It is intended to be used with text
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// and text_long fields. It also works with text_with_summary
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// fields though the text_summary_or_trimmed formatter makes more
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// sense for that field type.
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'text_trimmed' => array(
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'label' => t('Trimmed'),
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'field types' => array('text', 'text_long', 'text_with_summary'),
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'settings' => array('trim_length' => 600),
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),
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// The 'summary or trimmed' field formatter for text_with_summary
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// fields displays returns the summary element of the field or, if
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// the summary is empty, the trimmed version of the full element
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// of the field.
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207
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'text_summary_or_trimmed' => array(
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'label' => t('Summary or trimmed'),
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'field types' => array('text_with_summary'),
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'settings' => array('trim_length' => 600),
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),
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);
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}
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214
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215
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/**
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216
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* Implements hook_field_formatter_settings_form().
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*/
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218
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function text_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state) {
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219
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$display = $instance['display'][$view_mode];
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$settings = $display['settings'];
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221
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222
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$element = array();
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223
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224
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if (strpos($display['type'], '_trimmed') !== FALSE) {
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225
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$element['trim_length'] = array(
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226
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'#title' => t('Trim length'),
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'#type' => 'textfield',
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'#size' => 10,
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229
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'#default_value' => $settings['trim_length'],
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230
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'#element_validate' => array('element_validate_integer_positive'),
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231
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'#required' => TRUE,
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232
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);
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233
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}
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234
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235
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return $element;
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236
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}
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237
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238
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/**
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239
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* Implements hook_field_formatter_settings_summary().
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240
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*/
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241
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function text_field_formatter_settings_summary($field, $instance, $view_mode) {
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242
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$display = $instance['display'][$view_mode];
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243
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$settings = $display['settings'];
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244
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245
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$summary = '';
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246
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247
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if (strpos($display['type'], '_trimmed') !== FALSE) {
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248
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$summary = t('Trim length') . ': ' . check_plain($settings['trim_length']);
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249
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}
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250
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251
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return $summary;
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252
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}
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253
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254
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/**
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255
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* Implements hook_field_formatter_view().
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256
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*/
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257
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function text_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
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258
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$element = array();
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259
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260
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switch ($display['type']) {
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261
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case 'text_default':
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262
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case 'text_trimmed':
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263
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foreach ($items as $delta => $item) {
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264
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$output = _text_sanitize($instance, $langcode, $item, 'value');
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265
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if ($display['type'] == 'text_trimmed') {
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266
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$output = text_summary($output, $instance['settings']['text_processing'] ? $item['format'] : NULL, $display['settings']['trim_length']);
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267
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}
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268
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$element[$delta] = array('#markup' => $output);
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269
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}
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270
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break;
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271
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272
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case 'text_summary_or_trimmed':
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273
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foreach ($items as $delta => $item) {
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274
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if (!empty($item['summary'])) {
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275
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$output = _text_sanitize($instance, $langcode, $item, 'summary');
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276
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}
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277
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else {
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278
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$output = _text_sanitize($instance, $langcode, $item, 'value');
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279
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$output = text_summary($output, $instance['settings']['text_processing'] ? $item['format'] : NULL, $display['settings']['trim_length']);
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280
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}
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281
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$element[$delta] = array('#markup' => $output);
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282
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}
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283
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break;
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284
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285
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case 'text_plain':
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286
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foreach ($items as $delta => $item) {
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287
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$element[$delta] = array('#markup' => strip_tags($item['value']));
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|
288
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}
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289
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break;
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|
290
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}
|
|
291
|
|
|
292
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return $element;
|
|
293
|
}
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|
294
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|
|
295
|
/**
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|
296
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* Sanitizes the 'value' or 'summary' data of a text value.
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|
297
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*
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|
298
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* Depending on whether the field instance uses text processing, data is run
|
|
299
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* through check_plain() or check_markup().
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|
300
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*
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|
301
|
* @param $instance
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|
302
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* The instance definition.
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|
303
|
* @param $langcode
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304
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* The language associated to $item.
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|
305
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* @param $item
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|
306
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* The field value to sanitize.
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|
307
|
* @param $column
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|
308
|
* The column to sanitize (either 'value' or 'summary').
|
|
309
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*
|
|
310
|
* @return
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|
311
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* The sanitized string.
|
|
312
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*/
|
|
313
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function _text_sanitize($instance, $langcode, $item, $column) {
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|
314
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// If the value uses a cacheable text format, text_field_load() precomputes
|
|
315
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// the sanitized string.
|
|
316
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if (isset($item["safe_$column"])) {
|
|
317
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return $item["safe_$column"];
|
|
318
|
}
|
|
319
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return $instance['settings']['text_processing'] ? check_markup($item[$column], $item['format'], $langcode) : check_plain($item[$column]);
|
|
320
|
}
|
|
321
|
|
|
322
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/**
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|
323
|
* Generate a trimmed, formatted version of a text field value.
|
|
324
|
*
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|
325
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* If the end of the summary is not indicated using the <!--break--> delimiter
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|
326
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* then we generate the summary automatically, trying to end it at a sensible
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|
327
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* place such as the end of a paragraph, a line break, or the end of a
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328
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* sentence (in that order of preference).
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|
329
|
*
|
|
330
|
* @param $text
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|
331
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* The content for which a summary will be generated.
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|
332
|
* @param $format
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|
333
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* The format of the content.
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|
334
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* If the PHP filter is present and $text contains PHP code, we do not
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|
335
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* split it up to prevent parse errors.
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|
336
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* If the line break filter is present then we treat newlines embedded in
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|
337
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* $text as line breaks.
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|
338
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* If the htmlcorrector filter is present, it will be run on the generated
|
|
339
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* summary (if different from the incoming $text).
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|
340
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* @param $size
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|
341
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* The desired character length of the summary. If omitted, the default
|
|
342
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* value will be used. Ignored if the special delimiter is present
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|
343
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* in $text.
|
|
344
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* @return
|
|
345
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* The generated summary.
|
|
346
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*/
|
|
347
|
function text_summary($text, $format = NULL, $size = NULL) {
|
|
348
|
|
|
349
|
if (!isset($size)) {
|
|
350
|
// What used to be called 'teaser' is now called 'summary', but
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|
351
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// the variable 'teaser_length' is preserved for backwards compatibility.
|
|
352
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$size = variable_get('teaser_length', 600);
|
|
353
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}
|
|
354
|
|
|
355
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// Find where the delimiter is in the body
|
|
356
|
$delimiter = strpos($text, '<!--break-->');
|
|
357
|
|
|
358
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// If the size is zero, and there is no delimiter, the entire body is the summary.
|
|
359
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if ($size == 0 && $delimiter === FALSE) {
|
|
360
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return $text;
|
|
361
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}
|
|
362
|
|
|
363
|
// If a valid delimiter has been specified, use it to chop off the summary.
|
|
364
|
if ($delimiter !== FALSE) {
|
|
365
|
return substr($text, 0, $delimiter);
|
|
366
|
}
|
|
367
|
|
|
368
|
// We check for the presence of the PHP evaluator filter in the current
|
|
369
|
// format. If the body contains PHP code, we do not split it up to prevent
|
|
370
|
// parse errors.
|
|
371
|
if (isset($format)) {
|
|
372
|
$filters = filter_list_format($format);
|
|
373
|
if (isset($filters['php_code']) && $filters['php_code']->status && strpos($text, '<?') !== FALSE) {
|
|
374
|
return $text;
|
|
375
|
}
|
|
376
|
}
|
|
377
|
|
|
378
|
// If we have a short body, the entire body is the summary.
|
|
379
|
if (drupal_strlen($text) <= $size) {
|
|
380
|
return $text;
|
|
381
|
}
|
|
382
|
|
|
383
|
// If the delimiter has not been specified, try to split at paragraph or
|
|
384
|
// sentence boundaries.
|
|
385
|
|
|
386
|
// The summary may not be longer than maximum length specified. Initial slice.
|
|
387
|
$summary = truncate_utf8($text, $size);
|
|
388
|
|
|
389
|
// Store the actual length of the UTF8 string -- which might not be the same
|
|
390
|
// as $size.
|
|
391
|
$max_rpos = strlen($summary);
|
|
392
|
|
|
393
|
// How much to cut off the end of the summary so that it doesn't end in the
|
|
394
|
// middle of a paragraph, sentence, or word.
|
|
395
|
// Initialize it to maximum in order to find the minimum.
|
|
396
|
$min_rpos = $max_rpos;
|
|
397
|
|
|
398
|
// Store the reverse of the summary. We use strpos on the reversed needle and
|
|
399
|
// haystack for speed and convenience.
|
|
400
|
$reversed = strrev($summary);
|
|
401
|
|
|
402
|
// Build an array of arrays of break points grouped by preference.
|
|
403
|
$break_points = array();
|
|
404
|
|
|
405
|
// A paragraph near the end of sliced summary is most preferable.
|
|
406
|
$break_points[] = array('</p>' => 0);
|
|
407
|
|
|
408
|
// If no complete paragraph then treat line breaks as paragraphs.
|
|
409
|
$line_breaks = array('<br />' => 6, '<br>' => 4);
|
|
410
|
// Newline only indicates a line break if line break converter
|
|
411
|
// filter is present.
|
|
412
|
if (isset($filters['filter_autop'])) {
|
|
413
|
$line_breaks["\n"] = 1;
|
|
414
|
}
|
|
415
|
$break_points[] = $line_breaks;
|
|
416
|
|
|
417
|
// If the first paragraph is too long, split at the end of a sentence.
|
|
418
|
$break_points[] = array('. ' => 1, '! ' => 1, '? ' => 1, '。' => 0, '؟ ' => 1);
|
|
419
|
|
|
420
|
// Iterate over the groups of break points until a break point is found.
|
|
421
|
foreach ($break_points as $points) {
|
|
422
|
// Look for each break point, starting at the end of the summary.
|
|
423
|
foreach ($points as $point => $offset) {
|
|
424
|
// The summary is already reversed, but the break point isn't.
|
|
425
|
$rpos = strpos($reversed, strrev($point));
|
|
426
|
if ($rpos !== FALSE) {
|
|
427
|
$min_rpos = min($rpos + $offset, $min_rpos);
|
|
428
|
}
|
|
429
|
}
|
|
430
|
|
|
431
|
// If a break point was found in this group, slice and stop searching.
|
|
432
|
if ($min_rpos !== $max_rpos) {
|
|
433
|
// Don't slice with length 0. Length must be <0 to slice from RHS.
|
|
434
|
$summary = ($min_rpos === 0) ? $summary : substr($summary, 0, 0 - $min_rpos);
|
|
435
|
break;
|
|
436
|
}
|
|
437
|
}
|
|
438
|
|
|
439
|
// If the htmlcorrector filter is present, apply it to the generated summary.
|
|
440
|
if (isset($filters['filter_htmlcorrector'])) {
|
|
441
|
$summary = _filter_htmlcorrector($summary);
|
|
442
|
}
|
|
443
|
|
|
444
|
return $summary;
|
|
445
|
}
|
|
446
|
|
|
447
|
/**
|
|
448
|
* Implements hook_field_widget_info().
|
|
449
|
*/
|
|
450
|
function text_field_widget_info() {
|
|
451
|
return array(
|
|
452
|
'text_textfield' => array(
|
|
453
|
'label' => t('Text field'),
|
|
454
|
'field types' => array('text'),
|
|
455
|
'settings' => array('size' => 60),
|
|
456
|
),
|
|
457
|
'text_textarea' => array(
|
|
458
|
'label' => t('Text area (multiple rows)'),
|
|
459
|
'field types' => array('text_long'),
|
|
460
|
'settings' => array('rows' => 5),
|
|
461
|
),
|
|
462
|
'text_textarea_with_summary' => array(
|
|
463
|
'label' => t('Text area with a summary'),
|
|
464
|
'field types' => array('text_with_summary'),
|
|
465
|
'settings' => array('rows' => 20, 'summary_rows' => 5),
|
|
466
|
),
|
|
467
|
);
|
|
468
|
}
|
|
469
|
|
|
470
|
/**
|
|
471
|
* Implements hook_field_widget_settings_form().
|
|
472
|
*/
|
|
473
|
function text_field_widget_settings_form($field, $instance) {
|
|
474
|
$widget = $instance['widget'];
|
|
475
|
$settings = $widget['settings'];
|
|
476
|
|
|
477
|
if ($widget['type'] == 'text_textfield') {
|
|
478
|
$form['size'] = array(
|
|
479
|
'#type' => 'textfield',
|
|
480
|
'#title' => t('Size of textfield'),
|
|
481
|
'#default_value' => $settings['size'],
|
|
482
|
'#required' => TRUE,
|
|
483
|
'#element_validate' => array('element_validate_integer_positive'),
|
|
484
|
);
|
|
485
|
}
|
|
486
|
else {
|
|
487
|
$form['rows'] = array(
|
|
488
|
'#type' => 'textfield',
|
|
489
|
'#title' => t('Rows'),
|
|
490
|
'#default_value' => $settings['rows'],
|
|
491
|
'#required' => TRUE,
|
|
492
|
'#element_validate' => array('element_validate_integer_positive'),
|
|
493
|
);
|
|
494
|
}
|
|
495
|
|
|
496
|
return $form;
|
|
497
|
}
|
|
498
|
|
|
499
|
/**
|
|
500
|
* Implements hook_field_widget_form().
|
|
501
|
*/
|
|
502
|
function text_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
|
|
503
|
$summary_widget = array();
|
|
504
|
$main_widget = array();
|
|
505
|
|
|
506
|
switch ($instance['widget']['type']) {
|
|
507
|
case 'text_textfield':
|
|
508
|
$main_widget = $element + array(
|
|
509
|
'#type' => 'textfield',
|
|
510
|
'#default_value' => isset($items[$delta]['value']) ? $items[$delta]['value'] : NULL,
|
|
511
|
'#size' => $instance['widget']['settings']['size'],
|
|
512
|
'#maxlength' => $field['settings']['max_length'],
|
|
513
|
'#attributes' => array('class' => array('text-full')),
|
|
514
|
);
|
|
515
|
break;
|
|
516
|
|
|
517
|
case 'text_textarea_with_summary':
|
|
518
|
$display = !empty($items[$delta]['summary']) || !empty($instance['settings']['display_summary']);
|
|
519
|
$summary_widget = array(
|
|
520
|
'#type' => $display ? 'textarea' : 'value',
|
|
521
|
'#default_value' => isset($items[$delta]['summary']) ? $items[$delta]['summary'] : NULL,
|
|
522
|
'#title' => t('Summary'),
|
|
523
|
'#rows' => $instance['widget']['settings']['summary_rows'],
|
|
524
|
'#description' => t('Leave blank to use trimmed value of full text as the summary.'),
|
|
525
|
'#attached' => array(
|
|
526
|
'js' => array(drupal_get_path('module', 'text') . '/text.js'),
|
|
527
|
),
|
|
528
|
'#attributes' => array('class' => array('text-summary')),
|
|
529
|
'#prefix' => '<div class="text-summary-wrapper">',
|
|
530
|
'#suffix' => '</div>',
|
|
531
|
'#weight' => -10,
|
|
532
|
);
|
|
533
|
// Fall through to the next case.
|
|
534
|
|
|
535
|
case 'text_textarea':
|
|
536
|
$main_widget = $element + array(
|
|
537
|
'#type' => 'textarea',
|
|
538
|
'#default_value' => isset($items[$delta]['value']) ? $items[$delta]['value'] : NULL,
|
|
539
|
'#rows' => $instance['widget']['settings']['rows'],
|
|
540
|
'#attributes' => array('class' => array('text-full')),
|
|
541
|
);
|
|
542
|
break;
|
|
543
|
}
|
|
544
|
|
|
545
|
if ($main_widget) {
|
|
546
|
// Conditionally alter the form element's type if text processing is enabled.
|
|
547
|
if ($instance['settings']['text_processing']) {
|
|
548
|
$element = $main_widget;
|
|
549
|
$element['#type'] = 'text_format';
|
|
550
|
$element['#format'] = isset($items[$delta]['format']) ? $items[$delta]['format'] : NULL;
|
|
551
|
$element['#base_type'] = $main_widget['#type'];
|
|
552
|
}
|
|
553
|
else {
|
|
554
|
$element['value'] = $main_widget;
|
|
555
|
}
|
|
556
|
}
|
|
557
|
if ($summary_widget) {
|
|
558
|
$element['summary'] = $summary_widget;
|
|
559
|
}
|
|
560
|
|
|
561
|
return $element;
|
|
562
|
}
|
|
563
|
|
|
564
|
/**
|
|
565
|
* Implements hook_field_widget_error().
|
|
566
|
*/
|
|
567
|
function text_field_widget_error($element, $error, $form, &$form_state) {
|
|
568
|
switch ($error['error']) {
|
|
569
|
case 'text_summary_max_length':
|
|
570
|
$error_element = $element[$element['#columns'][1]];
|
|
571
|
break;
|
|
572
|
|
|
573
|
default:
|
|
574
|
$error_element = $element[$element['#columns'][0]];
|
|
575
|
break;
|
|
576
|
}
|
|
577
|
|
|
578
|
form_error($error_element, $error['message']);
|
|
579
|
}
|
|
580
|
|
|
581
|
/**
|
|
582
|
* Implements hook_field_prepare_translation().
|
|
583
|
*/
|
|
584
|
function text_field_prepare_translation($entity_type, $entity, $field, $instance, $langcode, &$items, $source_entity, $source_langcode) {
|
|
585
|
// If the translating user is not permitted to use the assigned text format,
|
|
586
|
// we must not expose the source values.
|
|
587
|
$field_name = $field['field_name'];
|
|
588
|
if (!empty($source_entity->{$field_name}[$source_langcode])) {
|
|
589
|
$formats = filter_formats();
|
|
590
|
foreach ($source_entity->{$field_name}[$source_langcode] as $delta => $item) {
|
|
591
|
$format_id = $item['format'];
|
|
592
|
if (!empty($format_id) && !filter_access($formats[$format_id])) {
|
|
593
|
unset($items[$delta]);
|
|
594
|
}
|
|
595
|
}
|
|
596
|
}
|
|
597
|
}
|
|
598
|
|
|
599
|
/**
|
|
600
|
* Implements hook_filter_format_update().
|
|
601
|
*/
|
|
602
|
function text_filter_format_update($format) {
|
|
603
|
field_cache_clear();
|
|
604
|
}
|
|
605
|
|
|
606
|
/**
|
|
607
|
* Implements hook_filter_format_disable().
|
|
608
|
*/
|
|
609
|
function text_filter_format_disable($format) {
|
|
610
|
field_cache_clear();
|
|
611
|
}
|
