InPost Gallery

The server prints a regex built from the registered shortcode keys. On BeforeSetContent each match gets an sc_id, its original text goes into a map, and it is replaced by an image placeholder with the shortcode's icon and an attribute summary in the title. On PostProcess the placeholders are replaced back from the map, so the saved post contains plain shortcodes and nothing editor-specific.

In edit mode get_shortcode_template() sets a shortcode_mode_edit flag, keeps only the first registered shortcode from the posted text via get_shortcode_regex(), and runs do_shortcode(). The plugin's shortcode handler sees the flag and stores the parsed attributes instead of rendering HTML. Form fields then read their defaults through set_default_value(), which sanitizes them.

This avoids a second attribute parser: quoting, escaping and spacing are handled by the same code that renders the shortcode on the front end.

changer() walks every form element marked with data-shortcode-field. Double quotes inside values are replaced with single quotes so they cannot close the attribute. A field named content becomes the enclosed content. Repeating fields marked save_as_one are collected and joined with ^ into one attribute, since shortcode attributes cannot hold arrays.

TinyMCE 4 in WordPress 3.9 replaced handlers such as onBeforeSetContent.add() with ed.on('BeforeSetContent'). The plugin keeps the old build in js/wp38/ and the new one in js/, and chooses between them both for the admin script and for the registered TinyMCE plugin.

get_shortcodes_array() scans views/shortcodes/popups/ and registers one shortcode per file name. Each key has a front template and an editor form template. get_shortcode_key_folder() returns the folder only for known keys, so AJAX callers cannot point the include at another file, and get_shortcode_template() falls back to inpost_gallery for unknown names.

get_image() takes a size alias such as 200x150 and calls a resizer adapted from Aqua Resizer 1.1.7. It computes the target size with image_resize_dimensions(), looks for an existing name-WxH.ext file next to the original and returns its URL, or resizes and saves it on the first request. The class is renamed (Inpg_Aq_ResizePN) and wrapped in class_exists so it cannot clash with themes that bundle the original library.

The plugin opens the standard media modal and temporarily replaces window.send_to_editor. The inserted HTML is parsed in a hidden buffer for link targets or image sources. add_meta_slide_items() requests one rendered slide at a time and starts the next request in the callback, so the slides keep the order of the selection. The list is sortable and renumbered after each change.

inpost_gallery_data is an array of slides with imgurl, title and group (1 to max_thumb_groups, 30 by default). The front templates filter it by group, or by a comma list of 1-based positions, and random=N shuffles and keeps N slides (-1 shuffles all).

A post_id that starts with { is treated as an expression. Parentheses become brackets and single quotes become double quotes, then json_decode() parses it. takebyid takes post:count:first|last|rand blocks from listed posts. take selects the N latest published posts of a post type; the sort direction is limited to ASC or DESC and the post type and limit are bound with prepare().

draw_html() copies the attributes with show_in_popup set to 0 into an attributes key, then turns the flag on for the cover. The cover template prints the snapshot as base64 JSON. front.js posts it with the shortcode key, and get_gallery_by_shortcode() decodes it, forces show_in_popup to 0 again so the response is always the gallery and never another cover, and renders the same template. A flag on the client blocks double clicks while the request runs.

get_gallery_by_shortcode() is registered for anonymous users and receives the shortcode key from the client. It includes a template only when get_shortcode_key_folder() finds the key among the shortcodes discovered at init; any other value renders nothing.

Script and style enqueues sit at the top of each shortcode template, so a page loads only the libraries of the galleries it actually shows, printed in the footer. Every instance gets a uniqid() container ID, so several galleries, including ones on different scripts, can run on one page.