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/**
* @file media_library.widget.js
*/
(($, Drupal, Sortable) => {
/**
* Allows users to re-order their selection with drag+drop.
*
* @type {Drupal~behavior}
*
* @prop {Drupal~behaviorAttach} attach
* Attaches behavior to re-order selected media items.
*/
Drupal.behaviors.MediaLibraryWidgetSortable = {
attach(context) {
// Allow media items to be re-sorted with drag+drop in the widget.
const selection = context.querySelectorAll('.js-media-library-selection');
selection.forEach((widget) => {
Sortable.create(widget, {
draggable: '.js-media-library-item',
handle: '.js-media-library-item-preview',
onEnd: () => {
$(widget)
.children()
.each((index, child) => {
$(child).find('.js-media-library-item-weight')[0].value = index;
});
},
});
});
},
};
/**
* Allows selection order to be set without drag+drop for accessibility.
*
* @type {Drupal~behavior}
*
* @prop {Drupal~behaviorAttach} attach
* Attaches behavior to toggle the weight field for media items.
*/
Drupal.behaviors.MediaLibraryWidgetToggleWeight = {
attach(context) {
const strings = {
show: Drupal.t('Show media item weights'),
hide: Drupal.t('Hide media item weights'),
};
const mediaLibraryToggle = once(
'media-library-toggle',
'.js-media-library-widget-toggle-weight',
context,
);
$(mediaLibraryToggle).on('click', (e) => {
e.preventDefault();
const $target = $(e.currentTarget);
e.currentTarget.textContent = $target.hasClass('active')
? strings.show
: strings.hide;
$target
.toggleClass('active')
.closest('.js-media-library-widget')
.find('.js-media-library-item-weight')
.parent()
.toggle();
});
mediaLibraryToggle.forEach((item) => {
item.textContent = strings.show;
});
$(once('media-library-toggle', '.js-media-library-item-weight', context))
.parent()
.hide();
},
};
/**
* Disable the open button when the user is not allowed to add more items.
*
* @type {Drupal~behavior}
*
* @prop {Drupal~behaviorAttach} attach
* Attaches behavior to disable the media library open button.
*/
Drupal.behaviors.MediaLibraryWidgetDisableButton = {
attach(context) {
// When the user returns from the modal to the widget, we want to shift
// the focus back to the open button. If the user is not allowed to add
// more items, the button needs to be disabled. Since we can't shift the
// focus to disabled elements, the focus is set back to the open button
// via JavaScript by adding the 'data-disabled-focus' attribute.
once(
'media-library-disable',
'.js-media-library-open-button[data-disabled-focus="true"]',
context,
).forEach((button) => {
$(button).focus();
// There is a small delay between the focus set by the browser and the
// focus of screen readers. We need to give screen readers time to shift
// the focus as well before the button is disabled.
setTimeout(() => {
$(button).attr('disabled', 'disabled');
}, 50);
});
},
};
})(jQuery, Drupal, Sortable);
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