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<?php
/**
* @file
* Contains the file RSS row style plugin.
*/
/**
* Plugin which performs a file_view on the resulting object
* and formats it as an RSS item.
*/
class views_plugin_row_file_rss extends views_plugin_row {
// Basic properties that let the row style follow relationships.
var $base_table = 'file_managed';
var $base_field = 'fid';
// Stores the files loaded with pre_render.
var $files = array();
function option_definition() {
$options = parent::option_definition();
$options['item_length'] = array('default' => 'default');
$options['links'] = array('default' => FALSE, 'bool' => TRUE);
return $options;
}
/**
* Override init function to convert fulltext view-mode to full.
*/
function init(&$view, &$display, $options = NULL) {
parent::init($view, $display, $options);
if ($this->options['item_length'] == 'fulltext') {
$this->options['item_length'] = 'full';
}
}
function options_form(&$form, &$form_state) {
parent::options_form($form, $form_state);
$form['item_length'] = array(
'#type' => 'select',
'#title' => t('Display type'),
'#options' => $this->options_form_summary_options(),
'#default_value' => $this->options['item_length'],
);
$form['links'] = array(
'#type' => 'checkbox',
'#title' => t('Display links'),
'#default_value' => $this->options['links'],
);
}
/**
* Return the main options, which are shown in the summary title.
*/
function options_form_summary_options() {
$entity_info = entity_get_info('file');
$options = array();
if (!empty($entity_info['view modes'])) {
foreach ($entity_info['view modes'] as $mode => $settings) {
$options[$mode] = $settings['label'];
}
}
$options['title'] = t('Title only');
$options['default'] = t('Use site default RSS settings');
return $options;
}
function summary_title() {
$options = $this->options_form_summary_options();
return check_plain($options[$this->options['item_length']]);
}
function pre_render($values) {
$fids = array();
foreach ($values as $row) {
$fids[] = $row->{$this->field_alias};
}
if (!empty($fids)) {
$this->files = file_load_multiple($fids);
}
}
function render($row) {
// For the most part, this code is taken from node_feed() in node.module
global $base_url;
$fid = $row->{$this->field_alias};
if (!is_numeric($fid)) {
return;
}
$display_mode = $this->options['item_length'];
if ($display_mode == 'default') {
$display_mode = variable_get('feed_item_length', 'teaser');
}
// Load the specified file:
$file = $this->files[$fid];
if (empty($file)) {
return;
}
$item_text = '';
$uri = entity_uri('file', $file);
$user = user_load($file->uid);
$file->link = url($uri['path'], $uri['options'] + array('absolute' => TRUE));
$file->rss_namespaces = array();
$file->rss_elements = array(
array(
'key' => 'pubDate',
'value' => gmdate('r', $file->timestamp),
),
array(
'key' => 'dc:creator',
'value' => $user->name,
),
array(
'key' => 'guid',
'value' => $file->fid . ' at ' . $base_url,
'attributes' => array('isPermaLink' => 'false'),
),
);
// The file gets built and modules add to or modify $file->rss_elements
// and $file->rss_namespaces.
$build_mode = $display_mode;
$build = file_view($file, $build_mode);
unset($build['#theme']);
if (!empty($file->rss_namespaces)) {
$this->view->style_plugin->namespaces = array_merge($this->view->style_plugin->namespaces, $file->rss_namespaces);
}
elseif (function_exists('rdf_get_namespaces')) {
// Merge RDF namespaces in the XML namespaces in case they are used
// further in the RSS content.
$xml_rdf_namespaces = array();
foreach (rdf_get_namespaces() as $prefix => $uri) {
$xml_rdf_namespaces['xmlns:' . $prefix] = $uri;
}
$this->view->style_plugin->namespaces += $xml_rdf_namespaces;
}
// Hide the links if desired.
if (!$this->options['links']) {
hide($build['links']);
}
if ($display_mode != 'title') {
// We render file contents and force links to be last.
$build['links']['#weight'] = 1000;
$item_text .= drupal_render($build);
}
$item = new stdClass();
$item->description = $item_text;
$item->title = $file->filename;
$item->link = $file->link;
$item->elements = $file->rss_elements;
$item->fid = $file->fid;
return theme($this->theme_functions(), array(
'view' => $this->view,
'options' => $this->options,
'row' => $item
));
}
}
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