Editing Variable-Length Line Item Edits (section)

=== Markup ===

Create PHP include files containing markup to display & edit the line items.

==== Line item group container ====

One `div` (or `section`) to act as a container for the line items.
* This `div` should be outside the include file for the individual line items, either in its own include file, or placed directly in the details and editing include file.
* CSS class is `line-items-container`.
* Include a `button` for adding new line items (class `add-line-btn`).
** CSS class is `add-line-btn`.
** `data-pid` attribute contains the parent record's id.
** `data-type` attribute contains the name of the PHP class that will be used to save edits to the line.

==== Individual flattened line items ====

The line item is placed in a container `div`.
* CSS class `line-item` to enable double-clicks to edit the item. (That's the default CSS class. It can be overridden within the $.lineitem library's settings.)
* `data-type` with the name of the PHP class.
* `data-id` with the record id of the line item.
* (optional) `title` attribute to give some indication that the element is clickable.

==== Line item edit form ====

* `div` container with `line-item` CSS class.
* `form` element
* Hidden input with `name="<?=P_COMMIT ?>"` and `value="1"`
* Hidden input with `name="class"` with the PHP class's name as its value.
* Hidden inputs storing record id and parent id values.
* Form inputs for each of the object's properties.
* Submit buttons include: `[COMMON_TEMPLATE_DIR]forms/ajax/edit_line_item_submit_buttons.php`

==== Line item deletion confirmation form ====

* `div` container with `line-item` and `delete-confirmation` CSS classes.
* `form` element
* Hidden input with `name="<?=P_COMMIT ?>"` and `value="1"`
* Hidden input with `name="class"` with the PHP class's name as its value.
* Plain text description of the line item, optionally inside of an element with `infoblock` as its CSS class.
* Submit buttons include: `[COMMON_TEMPLATE_DIR]forms/ajax/delete_line_item_submit_buttons.php`