visibilityChangeActions()

Usage

This function runs automatically, so it is not called manually. Is this incorrect?

Demo

Change tabs to see the log:

Additional Notes

This function essentially does the following:

If a prerender was detected, send an event to Google Analytics and prevent videos from playing.
If the page was hidden, trigger nebula_page_hidden, add a page-visibility-hidden class to the body, and pause all videos.
Otherwise, if the page has become visible, trigger nebula_page_visible and remove the page-visibility-hidden from the body. Note: This does not automatically resume videos.

Source File

Located in /assets/js/modules/utilities.js on line 908.

No Hooks

This function does not have any filters or actions available. Request one?

JavaScript

nebula.visibilityChangeActions = function(){
    if ( document.visibilityState === 'prerender' ){ //Page was prerendered
        gtag('event', 'page_visibility', {
            event_category: 'Page Visibility',
            event_action: 'Prerendered',
            event_label: 'Page loaded before tab/window was visible',
            non_interaction: true
        });

        nebula.pauseAllVideos(false);
    }

    if ( document.visibilitystate === 'hidden' ){ //Page is hidden
        nebula.dom.document.trigger('nebula_page_hidden');
        nebula.dom.body.addClass('page-visibility-hidden');
        nebula.pauseAllVideos(false);
    } else { //Page is visible
        nebula.networkAvailable();
        nebula.dom.document.trigger('nebula_page_visible');
        nebula.dom.body.removeClass('page-visibility-hidden');
    }
};

Override

To override or disable this JavaScript function, simply redeclare it with the exact same function name. Remember: Some functionality is conditionally loaded via dynamic imports, so if your function is not overriding properly, try listening for a DOM event (described below).

JavaScript

For non-module import functions:

nebula.visibilityChangeActions = function(){
    //Write your own code here, leave it blank, or return false.
}

For dynamically imported module function overrides:

jQuery(window).on('load', function(){
    nebula.visibilityChangeActions = function(){
        //Write your own code here, leave it blank, or return false.
    }
});

Custom Nebula DOM events do also exist, so you could also try the following if the Window Load listener does not work:

jQuery(document).on('nebula_module_loaded', function(module){
    //Note that the module variable is also available to know which module specifically was imported
    if ( typeof nebula.visibilityChangeActions === 'function' ){
        nebula.visibilityChangeActions = function(){
            //Write your own code here, leave it blank, or return false.
        }
	}
});

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