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<?php
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/**
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* @file
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* Definition of views_plugin_exposed_form_input_required.
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*/
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/**
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* Exposed form plugin that provides an exposed form with required input.
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*
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* @ingroup views_exposed_form_plugins
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*/
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class views_plugin_exposed_form_input_required extends views_plugin_exposed_form {
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/**
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* {@inheritdoc}
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*/
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public function option_definition() {
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$options = parent::option_definition();
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$options['text_input_required'] = array('default' => 'Select any filter and click on Apply to see results', 'translatable' => TRUE);
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$options['text_input_required_format'] = array('default' => NULL);
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return $options;
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}
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/**
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* {@inheritdoc}
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*/
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public function options_form(&$form, &$form_state) {
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parent::options_form($form, $form_state);
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$form['text_input_required'] = array(
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'#type' => 'text_format',
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'#title' => t('Text on demand'),
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'#description' => t('Text to display instead of results until the user selects and applies an exposed filter.'),
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'#default_value' => $this->options['text_input_required'],
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'#format' => isset($this->options['text_input_required_format']) ? $this->options['text_input_required_format'] : filter_default_format(),
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'#wysiwyg' => FALSE,
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);
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}
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/**
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* {@inheritdoc}
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*/
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public function options_submit(&$form, &$form_state) {
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$form_state['values']['exposed_form_options']['text_input_required_format'] = $form_state['values']['exposed_form_options']['text_input_required']['format'];
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$form_state['values']['exposed_form_options']['text_input_required'] = $form_state['values']['exposed_form_options']['text_input_required']['value'];
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parent::options_submit($form, $form_state);
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}
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/**
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* {@inheritdoc}
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*/
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public function exposed_filter_applied() {
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static $cache = NULL;
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if (!isset($cache)) {
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$view = $this->view;
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if (is_array($view->filter) && count($view->filter)) {
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foreach ($view->filter as $filter_id => $filter) {
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if ($filter->is_exposed()) {
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$identifier = $filter->options['expose']['identifier'];
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if (isset($view->exposed_input[$identifier])) {
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$cache = TRUE;
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return $cache;
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}
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}
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}
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}
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$cache = FALSE;
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}
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return $cache;
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}
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/**
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* {@inheritdoc}
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*/
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public function pre_render($values) {
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if (!$this->exposed_filter_applied()) {
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$options = array(
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'id' => 'area',
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'table' => 'views',
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'field' => 'area',
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'label' => '',
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'relationship' => 'none',
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'group_type' => 'group',
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'content' => $this->options['text_input_required'],
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'format' => $this->options['text_input_required_format'],
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'empty' => TRUE,
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);
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$handler = views_get_handler('views', 'area', 'area');
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$handler->init($this->view, $options);
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$this->display->handler->handlers['empty'] = array(
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'area' => $handler,
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);
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$this->display->handler->set_option('empty', array('text' => $options));
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function query() {
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if (!$this->exposed_filter_applied()) {
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// We return with no query; this will force the empty text.
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$this->view->built = TRUE;
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$this->view->executed = TRUE;
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$this->view->result = array();
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}
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else {
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parent::query();
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}
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}
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}
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