function views_plugin_cache::gather_headers

Gather out of band data, compare it to the start data and store the diff.

File

plugins/views_plugin_cache.inc, line 200

Class

views_plugin_cache

The base plugin to handle caching.

Code

public function gather_headers() {
    // Check if the advanced mapping function of D 7.23 is available.
    $array_mapping_func = function_exists('drupal_array_diff_assoc_recursive') ? 'drupal_array_diff_assoc_recursive' : 'array_diff_assoc';
    // Get difference for head.
    $this->storage['head'] = $array_mapping_func(drupal_add_html_head(), $this->storage['head']);
    // Slightly less simple for CSS.
    $css = drupal_add_css();
    $css_start = isset($this->storage['css']) ? $this->storage['css'] : array();
    $this->storage['css'] = $this->assetDiff($css, $css_start, $array_mapping_func);
    // Get JavaScript after/before views renders.
    $js = drupal_add_js();
    $js_start = isset($this->storage['js']) ? $this->storage['js'] : array();
    // If there are any differences between the old and the new JavaScript then
    // store them to be added later.
    $this->storage['js'] = $this->assetDiff($js, $js_start, $array_mapping_func);
    // Special case the settings key and get the difference of the data.
    $settings = isset($js['settings']['data']) ? $js['settings']['data'] : array();
    $settings_start = isset($js_start['settings']['data']) ? $js_start['settings']['data'] : array();
    $this->storage['js']['settings'] = $array_mapping_func($settings, $settings_start);
    // Get difference of HTTP headers.
    $this->storage['headers'] = $array_mapping_func(drupal_get_http_header(), $this->storage['headers']);
}