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<?php
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/**
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* @file
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* Contains the block display plugin.
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*/
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/**
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* The plugin that handles a block.
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*
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* @ingroup views_display_plugins
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*/
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class views_plugin_display_block extends views_plugin_display {
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function option_definition() {
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$options = parent::option_definition();
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$options['block_description'] = array('default' => '', 'translatable' => TRUE);
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$options['block_caching'] = array('default' => DRUPAL_NO_CACHE);
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return $options;
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}
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/**
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* The default block handler doesn't support configurable items,
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* but extended block handlers might be able to do interesting
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* stuff with it.
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*/
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function execute_hook_block_list($delta = 0, $edit = array()) {
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$delta = $this->view->name . '-' . $this->display->id;
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$desc = $this->get_option('block_description');
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if (empty($desc)) {
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if ($this->display->display_title == $this->definition['title']) {
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$desc = t('View: !view', array('!view' => $this->view->get_human_name()));
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}
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else {
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$desc = t('View: !view: !display', array('!view' => $this->view->get_human_name(), '!display' => $this->display->display_title));
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}
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}
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return array(
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$delta => array(
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'info' => $desc,
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'cache' => $this->get_cache_type()
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),
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);
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}
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/**
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* The display block handler returns the structure necessary for a block.
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*/
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function execute() {
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// Prior to this being called, the $view should already be set to this
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// display, and arguments should be set on the view.
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$info['content'] = $this->view->render();
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$info['subject'] = filter_xss_admin($this->view->get_title());
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if (!empty($this->view->result) || $this->get_option('empty') || !empty($this->view->style_plugin->definition['even empty'])) {
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return $info;
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}
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}
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/**
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* Provide the summary for page options in the views UI.
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*
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* This output is returned as an array.
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*/
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function options_summary(&$categories, &$options) {
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// It is very important to call the parent function here:
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parent::options_summary($categories, $options);
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$categories['block'] = array(
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'title' => t('Block settings'),
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'column' => 'second',
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'build' => array(
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'#weight' => -10,
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),
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);
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$block_description = strip_tags($this->get_option('block_description'));
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if (empty($block_description)) {
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$block_description = t('None');
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}
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$options['block_description'] = array(
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'category' => 'block',
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'title' => t('Block name'),
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'value' => views_ui_truncate($block_description, 24),
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);
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$types = $this->block_caching_modes();
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$options['block_caching'] = array(
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'category' => 'other',
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'title' => t('Block caching'),
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'value' => $types[$this->get_cache_type()],
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);
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}
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/**
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* Provide a list of core's block caching modes.
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*/
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function block_caching_modes() {
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return array(
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DRUPAL_NO_CACHE => t('Do not cache'),
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DRUPAL_CACHE_GLOBAL => t('Cache once for everything (global)'),
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DRUPAL_CACHE_PER_PAGE => t('Per page'),
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DRUPAL_CACHE_PER_ROLE => t('Per role'),
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DRUPAL_CACHE_PER_ROLE | DRUPAL_CACHE_PER_PAGE => t('Per role per page'),
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DRUPAL_CACHE_PER_USER => t('Per user'),
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DRUPAL_CACHE_PER_USER | DRUPAL_CACHE_PER_PAGE => t('Per user per page'),
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);
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}
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/**
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* Provide a single method to figure caching type, keeping a sensible default
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* for when it's unset.
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*/
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function get_cache_type() {
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$cache_type = $this->get_option('block_caching');
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if (empty($cache_type)) {
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$cache_type = DRUPAL_NO_CACHE;
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}
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return $cache_type;
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}
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/**
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* Provide the default form for setting options.
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*/
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function options_form(&$form, &$form_state) {
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// It is very important to call the parent function here:
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parent::options_form($form, $form_state);
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switch ($form_state['section']) {
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case 'block_description':
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$form['#title'] .= t('Block admin description');
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$form['block_description'] = array(
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'#type' => 'textfield',
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'#description' => t('This will appear as the name of this block in administer >> structure >> blocks.'),
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'#default_value' => $this->get_option('block_description'),
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);
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break;
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case 'block_caching':
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$form['#title'] .= t('Block caching type');
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$form['block_caching'] = array(
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'#type' => 'radios',
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'#description' => t("This sets the default status for Drupal's built-in block caching method; this requires that caching be turned on in block administration, and be careful because you have little control over when this cache is flushed."),
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'#options' => $this->block_caching_modes(),
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'#default_value' => $this->get_cache_type(),
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);
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break;
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case 'exposed_form_options':
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$this->view->init_handlers();
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if (!$this->uses_exposed() && parent::uses_exposed()) {
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$form['exposed_form_options']['warning'] = array(
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'#weight' => -10,
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'#markup' => '<div class="messages warning">' . t('Exposed filters in block displays require "Use AJAX" to be set to work correctly.') . '</div>',
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);
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}
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}
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}
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/**
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* Perform any necessary changes to the form values prior to storage.
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* There is no need for this function to actually store the data.
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*/
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function options_submit(&$form, &$form_state) {
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// It is very important to call the parent function here:
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parent::options_submit($form, $form_state);
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switch ($form_state['section']) {
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case 'display_id':
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$this->update_block_bid($form_state['view']->name, $this->display->id, $this->display->new_id);
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break;
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case 'block_description':
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$this->set_option('block_description', $form_state['values']['block_description']);
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break;
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case 'block_caching':
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$this->set_option('block_caching', $form_state['values']['block_caching']);
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$this->save_block_cache($form_state['view']->name . '-'. $form_state['display_id'], $form_state['values']['block_caching']);
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break;
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}
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}
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/**
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* Block views use exposed widgets only if AJAX is set.
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*/
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function uses_exposed() {
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if ($this->use_ajax()) {
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return parent::uses_exposed();
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}
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return FALSE;
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}
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/**
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* Update the block delta when you change the machine readable name of the display.
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*/
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function update_block_bid($name, $old_delta, $delta) {
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$old_hashes = $hashes = variable_get('views_block_hashes', array());
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$old_delta = $name . '-' . $old_delta;
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$delta = $name . '-' . $delta;
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if (strlen($old_delta) >= 32) {
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$old_delta = md5($old_delta);
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unset($hashes[$old_delta]);
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}
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if (strlen($delta) >= 32) {
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$md5_delta = md5($delta);
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$hashes[$md5_delta] = $delta;
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$delta = $md5_delta;
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}
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// Maybe people don't have block module installed, so let's skip this.
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if (db_table_exists('block')) {
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db_update('block')
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->fields(array('delta' => $delta))
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->condition('delta', $old_delta)
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->execute();
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}
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// Update the hashes if needed.
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if ($hashes != $old_hashes) {
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variable_set('views_block_hashes', $hashes);
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}
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}
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/**
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* Save the block cache setting in the blocks table if this block already
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* exists in the blocks table. Dirty fix until http://drupal.org/node/235673 gets in.
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*/
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function save_block_cache($delta, $cache_setting) {
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if (strlen($delta) >= 32) {
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$delta = md5($delta);
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}
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if (db_table_exists('block') && $bid = db_query("SELECT bid FROM {block} WHERE module = 'views' AND delta = :delta", array(
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':delta' => $delta))->fetchField()) {
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db_update('block')
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->fields(array(
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'cache' => $cache_setting,
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))
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->condition('module','views')
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->condition('delta', $delta)
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->execute();
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}
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}
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}
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