function views_plugin_cache::gather_headers

Gather out of band data, compare it to what we started with and store the difference.

File

core/modules/views/plugins/views_plugin_cache.inc, line 193

Definition of views_plugin_cache.

Class

views_plugin_cache

The base plugin to handle caching.

Code

function gather_headers() {
  // Check if the advanced mapping function of D 7.23 is available.
  $array_mapping_func = function_exists('backdrop_array_diff_assoc_recursive') ? 'backdrop_array_diff_assoc_recursive' : 'array_diff_assoc';

  // Get difference for head.
  $this->storage['head'] = $array_mapping_func(backdrop_add_html_head(), $this->storage['head']);

  // Slightly less simple for CSS:
  $css = backdrop_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 = backdrop_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(backdrop_get_http_header(), $this->storage['headers']);
}