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<?php
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/**
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* @file
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* Views area handlers.
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*/
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/**
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* @defgroup views_area_handlers Views area handlers
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* @{
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* Handlers to tell Views what can display in header, footer
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* and empty text in a view.
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*/
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/**
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* Base class for area handlers.
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*
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* @ingroup views_area_handlers
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*/
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class views_handler_area extends views_handler {
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/**
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* Overrides views_handler::init().
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*
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* Make sure that no result area handlers are set to be shown when the result
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* is empty.
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*/
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function init(&$view, &$options) {
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parent::init($view, $options);
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if ($this->handler_type == 'empty') {
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$this->options['empty'] = TRUE;
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}
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}
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/**
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* Get this field's label.
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*/
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function label() {
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if (!isset($this->options['label'])) {
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return $this->ui_name();
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}
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return $this->options['label'];
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}
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function option_definition() {
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$options = parent::option_definition();
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$this->definition['field'] = !empty($this->definition['field']) ? $this->definition['field'] : '';
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$label = !empty($this->definition['label']) ? $this->definition['label'] : $this->definition['field'];
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$options['label'] = array('default' => $label, 'translatable' => TRUE);
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$options['empty'] = array('default' => FALSE, 'bool' => TRUE);
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return $options;
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}
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/**
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* Provide extra data to the administration form
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*/
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function admin_summary() {
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return $this->label();
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}
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/**
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* Default options form that provides the label widget that all fields
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* should have.
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*/
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function options_form(&$form, &$form_state) {
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parent::options_form($form, $form_state);
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$form['label'] = array(
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'#type' => 'textfield',
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'#title' => t('Label'),
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'#default_value' => isset($this->options['label']) ? $this->options['label'] : '',
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'#description' => t('The label for this area that will be displayed only administratively.'),
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);
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if ($form_state['type'] != 'empty') {
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$form['empty'] = array(
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'#type' => 'checkbox',
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'#title' => t('Display even if view has no result'),
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'#default_value' => isset($this->options['empty']) ? $this->options['empty'] : 0,
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);
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}
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}
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/**
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* Don't run a query
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*/
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function query() { }
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/**
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* Render the area
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*/
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function render($empty = FALSE) {
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return '';
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}
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/**
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* Area handlers shouldn't have groupby.
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*/
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function use_group_by() {
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return FALSE;
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}
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}
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/**
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* A special handler to take the place of missing or broken handlers.
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*
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* @ingroup views_area_handlers
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*/
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class views_handler_area_broken extends views_handler_area {
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function ui_name($short = FALSE) {
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return t('Broken/missing handler');
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}
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function ensure_my_table() { /* No table to ensure! */ }
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function query($group_by = FALSE) { /* No query to run */ }
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function render($empty = FALSE) { return ''; }
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function options_form(&$form, &$form_state) {
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$form['markup'] = array(
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'#prefix' => '<div class="form-item description">',
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'#value' => t('The handler for this item is broken or missing and cannot be used. If a module provided the handler and was disabled, re-enabling the module may restore it. Otherwise, you should probably delete this item.'),
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);
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}
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/**
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* Determine if the handler is considered 'broken'
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*/
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function broken() { return TRUE; }
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}
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/**
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* @}
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*/
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