Photoswipe pswp class Not Clearing After Closing Image

Question

I have a Photoswipe (http://photoswipe.com) image gallery on my site, and the css class is not resetting/clearing to remove the view after I close a gallery for the second time.

ex. User opens item 1, AJAX populates the figure(s) into the picture div. User clicks an image from item 1 and Photoswipe opens the image properly (setting the following class):

class="pswp pswp--supports-fs pswp--open pswp--animate_opacity pswp--notouch pswp--css_animation pswp--svg pswp--animated-in pswp--visible"

User closes the image from item 1, class resets as normal:

class="pswp"

User closes item 1 and JS/JQuery clears all html in picture div. User opens item 2, AJAX populates the figure into the picture div. User clicks an image from item 2 and Photoswipe opens the image properly setting the same class as before.

class="pswp pswp--supports-fs pswp--open pswp--animate_opacity pswp--notouch pswp--css_animation pswp--svg pswp--animated-in pswp--visible"

This is where the problem occurs. User closes the image from item 2 and the only thing that changes is:

aria-hidden="true"

but the class does not clear, it remains:

class="pswp pswp--supports-fs pswp--open pswp--animate_opacity pswp--notouch pswp--css_animation pswp--svg pswp--animated-in pswp--visible"

when it should change to:

class="pswp"

This disables all interaction on the website since there is an invisible div/class on top of everything. The class needs to be changed back to pswp somehow.

AJAX/JS To Populate picture div (I added an id to the div):

if (i == 0) {
    $('#listing_photos_container').append('<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject"><a href="' + json[i].image_url + '" itemprop="contentUrl" data-size="512x400" data-index="' + i + '"><img src="' + json[i].image_url + '" height="400" width="600" itemprop="thumbnail" alt="listingPhoto" class="listing-photo"></a></figure>');
} else {
    $('#listing_photos_container').append('<figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject" class="listing-photo-holder"><a href="' + json[i].image_url + '" itemprop="contentUrl" data-size="512x400" data-index="' + i + '"><img src="' + json[i].image_url + '" height="400" width="600" itemprop="thumbnail" alt="listingPhoto" class="listing-photo-holder"></a></figure>');
 }

JS/JQuery to clear photo div:

 $('#listing_photos_container').html('');

EDIT: The click listener function is running twice when a users clicks the photo to bring full screen. This is the code for the listener:

$.ajax({
    type: "POST",
    url: 'http://example.com/action?action=photos',
    data: {id: id},
    success: function (data) {
        console.log('API Call - Photos');
        json = JSON.parse(data);
        $('#listing_photos_container').html('');
        for (var i = 0; i < json.length; i++) {
            // Styling code here
        }
        $('#list_header').html(
            (function($) {
                $('.picture').each( function() {
                    var $pic = $(this),
                    getItems = function() {
                        var items = [];
                        $pic.find('a').each(function() {
                            var $href = $(this).attr('href'),
                                $size = $(this).data('size').split('x'),
                                $width = $size[0],$height = $size[1];
                            var item = {
                                src : $href,
                                w   : $width,
                                h   : $height
                            }
                            items.push(item);
                        });
                        return items;
                    }
                    var items = getItems();
                    console.log('Items for PSWP' + items); 
                    alert('Alert Point 1'); // This is called once, (as it should).
                    var $pswp = $('.pswp')[0];
                    $pic.on('click', 'figure', function(event) {
                        // This block is called twice..
                        alert('Click Funct');
                        event.preventDefault();
                        var $index = $(this).index();
                        var options = {
                            index: $index,
                            bgOpacity: 0.7,
                            showHideOpacity: true
                        }
                        // Initialize PhotoSwipe
                        alert('Setting new PhotoSwipe');
                        var lightBox = new PhotoSwipe($pswp, PhotoSwipeUI_Default, items, options);
                        lightBox.init();
                    }); // End $pic.on
                });// End .picture each
            })(jQuery)
        ); // End list_header.html
    } // End AJAX Success
}); // End AJAX

Answer 1

You may have already fixed this, but in case someone else falls upon this.

This can happen if you trigger opening the gallery more than once without closing it. It may be that you have registered multiple click handlers to open the gallery or for some reason the event is being fired twice.

It happens because in the init function the current class name of the pswp element is retrieved and cached, then on destroy the class name is restored. When the second open occurs without destroy being called _initialClassName will be set to class="pswp pswp--supports-fs pswp--open pswp--animate_opacity pswp--notouch pswp--css_animation pswp--svg pswp--animated-in pswp--visible" as your are seeing

Line 776 of photoswipe.js where initialclass is set

_initalClassName = template.className;

Breakpoint this in your browser to see if it is called multiple times when opening

Line 942 onwards destroy function

destroy: function() {
    _shout('destroy');

Breakpoint this in your browser to ensure it is being called for every time open is called

Final Solution

The problem is that when opening the popup and loading the images you are filling #listing_photos_container with your photos, then adding a click handler to open photoswipe. This click handler is added to the top element, so will remain when the popup is closed, then the next time it is opened a new click handler will be added.

To fix this you just need to unbind the click handler when closing the popup, you can do this with $(".picture").off('click'); somewhere inside your closeListing() function