How to unhide Image Captions in Photoswipe for Wordpress

Question

I'm using PhotoSwipe Gallery in my Wordpress theme and when I open the Slideshow, the Image Captions don't appear.

I'm trying to write a plugin for Wordpress which should fix this problem. As far as I know (thank God there is Google Chrome's Inspect Element function!!!) the div that I would need to change is the following:

<div class="ps-caption-content">&nbsp;</div>

If I insert something else than between the div tags in Google Chrome's Inspector it becomes the Image's caption.

But I have no idea how to write a jQuery or javaScript function in order change the caption.

I googled and found the following suggestion for customizing PhotoSwipe Image captions, but it didn't work for me:

https://github.com/dimsemenov/PhotoSwipe/blob/master/src/examples/11-custom-captions.html

Does anyone have an idea how I could unhide/show the real captions of the images in the slideshow?

I added wrote a new Plugin for Wordpress and installed and activated. It contains a js folder with .js file called custom_photoswipe_image_titles.js .

Inside my plugin I have the following php code:

<?php
/*
Plugin Name: wpCasa Image Titles
Plugin URI: 
Description:  Adds titles above the listing gallery images
Version: 1.0.0
Author: Elshan Siradjov
Author URI: http://www.w3schools.com/
License: 
*/


/**
 * Load javascript and css Files
 *
 */



function image_titles_add_to_doc_head()
{
    wp_enqueue_style('photoswipe-style', 'http://www.siradjov.anex.at/playground/wp-content/themes/wpcasa/lib/assets/js/photoswipe/photoswipe.css');

    wp_register_script( 'klassmin', 'http://siradjov.anex.at/playground/wp-content/themes/wpcasa/lib/assets/js/photoswipe/klass.min.js' );
        wp_enqueue_script( 'klassmin' );

    wp_register_script( 'code_photoswipe', 'http://siradjov.anex.at/playground/wp-content/themes/wpcasa/lib/assets/js/photoswipe/code.photoswipe-3.0.5.min.js' );
        wp_enqueue_script( 'code_photoswipe' );



    wp_register_script( 'custom_js_photoswipe_image_titles', 'http://siradjov.anex.at/playground/wp-content/plugins/wpcasa-image-titles/js/custom_photoswipe_image_titles.js' );
        wp_enqueue_script( 'custom_js_photoswipe_image_titles' );
}

add_action( 'wp_enqueue_scripts', 'image_titles_add_to_doc_head' );

Inside the custom_photoswipe_image_titles.js file I tried the following jquery code in order to change the image caption:

$('div.ps-caption-content').html('Test Caption');

But it didn't work. The caption is still empty.

I also to tried to embed the jQuery code in a document ready function like this:

jQuery(document).ready(function($)   
{   
    $('div.ps-caption-content').html("blabla");    
});

It didn't work either.

@vico: I found a piece of code inside code.photoswipe-3.0.5.min.js :

(function(e,c,a){

 a.registerNamespace("Code.PhotoSwipe.Toolbar");
 var b=e.Code.PhotoSwipe;

 b.Toolbar.CssClasses={
      toolbar:"ps-toolbar",
      toolbarContent:"ps-toolbar-content",
      toolbarTop:"ps-toolbar-top",
      caption:"ps-caption",
      captionBottom:"ps-caption-bottom",
      captionContent:"ps-caption-content",   // This is where ps-caption-content is set!
      close:"ps-toolbar-close",
      play:"ps-toolbar-play",
      previous:"ps-toolbar-previous",
      previousDisabled:"ps-toolbar-previous-disabled",
      next:"ps-toolbar-next",
      nextDisabled:"ps-toolbar-next-disabled"};
  .....
  ......

I also found this code inside code.photoswipe-3.0.5.min.js :

initialize:function(d,c){
var g;
this.settings=c;
this.cache=d;
this.isVisible=!1;
this.fadeOutHandler=this.onFadeOut.bind(this);
this.touchStartHandler=this.onTouchStart.bind(this);
this.touchMoveHandler=this.onTouchMove.bind(this);
this.clickHandler=this.onClick.bind(this);
g=b.Toolbar.CssClasses.toolbar;
this.settings.captionAndToolbarFlipPosition&&(g=g+" "+b.Toolbar.CssClasses.toolbarTop);
this.toolbarEl=a.DOM.createElement("div",{"class":g},this.settings.getToolbar());

a.DOM.setStyle(this.toolbarEl,{left:0,position:"absolute",overflow:"hidden",zIndex:this.settings.zIndex});
this.settings.target===e?a.DOM.appendToBody(this.toolbarEl):a.DOM.appendChild(this.toolbarEl,this.settings.target);

a.DOM.hide(this.toolbarEl);
this.closeEl=a.DOM.find("."+b.Toolbar.CssClasses.close,this.toolbarEl)[0];
this.settings.preventHide&&!a.isNothing(this.closeEl)&&a.DOM.hide(this.closeEl);
this.playEl=a.DOM.find("."+b.Toolbar.CssClasses.play,this.toolbarEl)[0];
this.settings.preventSlideshow&&!a.isNothing(this.playEl)&&a.DOM.hide(this.playEl);
this.nextEl=a.DOM.find("."+b.Toolbar.CssClasses.next,this.toolbarEl)[0];
this.previousEl=a.DOM.find("."+b.Toolbar.CssClasses.previous,this.toolbarEl)[0];
g=b.Toolbar.CssClasses.caption;this.settings.captionAndToolbarFlipPosition&&(g=g+" "+b.Toolbar.CssClasses.captionBottom);
this.captionEl=a.DOM.createElement("div",{"class":g},"");
a.DOM.setStyle(this.captionEl,{left:0,position:"absolute",overflow:"hidden",zIndex:this.settings.zIndex});
this.settings.target===e?a.DOM.appendToBody(this.captionEl):a.DOM.appendChild(this.captionEl,this.settings.target);
a.DOM.hide(this.captionEl);

this.captionContentEl=a.DOM.createElement("div",{"class":b.Toolbar.CssClasses.captionContent},"");    // This where captionContent is being set!!!

a.DOM.appendChild(this.captionContentEl,this.captionEl);
this.addEventHandlers()},

In the function above the following line seems to be setting the value for the ps-caption-content:

this.captionContentEl=a.DOM.createElement("div",{"class":b.Toolbar.CssClasses.captionContent},"");

Answer 1

That isn't the place to be changing it.

here is a fiddle of the actual code that outputs your DIV

 this.captionContentEl = a.DOM.createElement("div", {
                "class": b.Toolbar.CssClasses.captionContent
            }, "");

and here is a fiddle of your source code expanded

http://siradjov.anex.at/playground/wp-content/themes/wpcasa/lib/assets/js/photoswipe/code.photoswipe-3.0.5.min.js

http://jsfiddle.net/SjZWy/

NOW you just have to find out where in the code produces your ACTUAL caption and then stick the caption var string into that div and your thing will work.