Implements hook_exit().

When viewing an overlay child page, check if we need to trigger a refresh of the supplemental regions of the overlay on the next page request.

File

modules/overlay/overlay.module, line 190

Code

function overlay_exit () {
 // Check that we are in an overlay child page. Note that this should never
 // return TRUE on a cached page view, since the child mode is not set until
 // overlay_init() is called.
 if (overlay_get_mode () == 'child') {
 // Load any markup that was stored earlier in the page request, via calls
 // to overlay_store_rendered_content(). If none was stored, this is not a
 // page request where we expect any changes to the overlay supplemental
 // regions to have occurred, so we do not need to proceed any further.
 $original_markup = overlay_get_rendered_content ();
 if (!empty($original_markup)) {
 // Compare the original markup to the current markup that we get from
 // rendering each overlay supplemental region now. If they don't match,
 // something must have changed, so we request a refresh of that region
 // within the parent window on the next page request.
 foreach (overlay_supplemental_regions () as $region) {
 if (!isset($original_markup[$region]) || $original_markup[$region] != overlay_render_region ($region)) {
 overlay_request_refresh ($region);
 }
 }
 }
 }
}

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