diff --git a/link.module b/link.module index 1e9d088..a5739f6 100644 --- a/link.module +++ b/link.module @@ -336,6 +336,27 @@ function link_field_widget_form(&$form, &$form_state, $field, $instance, $langco '#type' => $instance['widget']['type'], '#default_value' => isset($items[$delta]) ? $items[$delta] : '', ); + if ($field['cardinality'] == FIELD_CARDINALITY_UNLIMITED) { + $field_parents = $element['#field_parents']; + $field_name = $element['#field_name']; + $language = $element['#language']; + $parents = array_merge($field_parents, array($field_name, $language, $delta)); + $element['remove_button'] = array( + '#delta' => $delta, + '#name' => implode('_', $parents) . '_remove_button', + '#type' => 'submit', + '#value' => t('Remove'), + '#validate' => array(), + '#submit' => array('link_remove_submit'), + '#limit_validation_errors' => array(), + '#weight' => 1000, + '#ajax' => array( + 'effect' => 'fade', + 'callback' => 'link_remove_callback', + //'wrapper' is set at link_field_attach_form() + ), + ); + } return $element; } @@ -899,6 +920,108 @@ function link_field_process($element, $form_state, $complete_form) { } /** + * Form submission handler for remove buttons of link_field elements. + * + * @see file_managed_file_process() + */ +function link_remove_submit($form, &$form_state) { + // Determine which delta the 'Remove' button was triggered. + $button = $form_state['triggering_element']; + $delta = $button['#delta']; + + $address = array_slice($button['#array_parents'], 0, -2); + + $parent_element = drupal_array_get_nested_value($form, $address); + $field_name = $parent_element['#field_name']; + $langcode = $parent_element['#language']; + $parents = $parent_element['#field_parents']; + + $field_state = field_form_get_state($parents, $field_name, $langcode, $form_state); + + for ($i = $delta; $i <= $field_state['items_count']; $i++) { + $old_element_address = array_merge($address, array($i + 1)); + $new_element_address = array_merge($address, array($i)); + + $moving_element = drupal_array_get_nested_value($form, $old_element_address); + $moving_element_value = drupal_array_get_nested_value($form_state['values'], $old_element_address); + $moving_element_input = drupal_array_get_nested_value($form_state['input'], $old_element_address); + $moving_element_field = drupal_array_get_nested_value($form_state['field']['#parents'], $old_element_address); + + // Tell the element where it's being moved to. + $moving_element['#parents'] = $new_element_address; + + // Move the element around. + form_set_value($moving_element, $moving_element_value, $form_state); + drupal_array_set_nested_value($form_state['input'], $moving_element['#parents'], $moving_element_input); + drupal_array_set_nested_value($form_state['field']['#parents'], $moving_element['#parents'], $moving_element_field); + + // Move the entity in our saved state. + if (isset($field_state['entity'][$i + 1])) { + $field_state['entity'][$i] = $field_state['entity'][$i + 1]; + } + else { + unset($field_state['entity'][$i]); + } + } + + // Replace the deleted entity with an empty one. This helps to ensure that + // trying to add a new entity won't ressurect a deleted entity + // from thev trash bin. + // $count = count($field_state['entity']); + // Then remove the last item. But we must not go negative. + if ($field_state['items_count'] > 0) { + $field_state['items_count']--; + } + + // Fix the weights. Field UI lets the weights be in a range of + // (-1 * item_count) to (item_count). This means that when we remove one, + // the range shrinks; weights outside of that range then get set to + // the first item in the select by the browser, floating them to the top. + // We use a brute force method because we lost weights on both ends + // and if the user has moved things around, we have to cascade because + // if I have items weight weights 3 and 4, and I change 4 to 3 but leave + // the 3, the order of the two 3s now is undefined and may not match what + // the user had selected. + $input = drupal_array_get_nested_value($form_state['input'], $address); + // Sort by weight. + uasort($input, '_field_sort_items_helper'); + + // Reweight everything in the correct order. + $weight = -1 * $field_state['items_count']; + foreach ($input as $key => $item) { + if ($item) { + $input[$key]['_weight'] = $weight++; + } + } + drupal_array_set_nested_value($form_state['input'], $address, $input); + field_form_set_state($parents, $field_name, $langcode, $form_state, $field_state); + + $form_state['rebuild'] = TRUE; +} + +/** + * Callback to rebuild the form for AJAX. + */ +function link_remove_callback($form, &$form_state) { + $button = $form_state['triggering_element']; + + // Go one level up in the form, to the widgets container. + $element = drupal_array_get_nested_value($form, array_slice($button['#array_parents'], 0, -2)); + $field_name = $element['#field_name']; + $langcode = $element['#language']; + $parents = $element['#field_parents']; + + $field_state = field_form_get_state($parents, $field_name, $langcode, $form_state); + + $field = $field_state['field']; + if ($field['cardinality'] != FIELD_CARDINALITY_UNLIMITED) { + return; + } + + return $element; +} + +/** * Implements hook_field_formatter_info(). */ function link_field_formatter_info() { @@ -1521,3 +1644,38 @@ function link_i18n_string_list_field_alter(&$strings, $type = NULL, $object = NU $strings['field'][$object['field_name']][$object['bundle']]['title_value']['string'] = $object['settings']['title_value']; } } + +/** + * Implements hook_field_attach_form(). + * + * @see field_add_more_js() + * @see link_field_widget_form() + */ +function link_field_attach_form($entity_type, $entity, &$form, &$form_state, $langcode) { + + foreach (field_info_instances($entity_type, $form['#bundle']) as $field_name => $instance) { + $field = field_info_field($field_name); + + if ($field['type'] == 'link_field') { + + $element_langcode = $form[$field_name]['#language']; + if ($form[$field_name][$element_langcode]['#max_delta'] > 0) { + $form[$field_name][$element_langcode]['#max_delta']--; + } + } + + if ($field['type'] == 'link_field' + && $field['cardinality'] == FIELD_CARDINALITY_UNLIMITED + && empty($form_state['programmed']) + && field_access('edit', $field, $entity_type)) { + + $element_langcode = $form[$field_name]['#language']; + $element_wrapper = $form[$field_name][$element_langcode]['add_more']['#ajax']['wrapper']; + for ($i = 0; $i <= $form[$field_name][$element_langcode]['#max_delta']; $i++) { + if (isset($form[$field_name][$element_langcode][$i]['remove_button'])) { + $form[$field_name][$element_langcode][$i]['remove_button']['#ajax']['wrapper'] = $element_wrapper; + } + } + } + } +}