142 lines
3.8 KiB
JavaScript
142 lines
3.8 KiB
JavaScript
/**
|
|
* @file
|
|
* Polyfill for HTML5 details elements.
|
|
*/
|
|
|
|
(function ($, Modernizr, Drupal) {
|
|
|
|
"use strict";
|
|
|
|
/**
|
|
* The collapsible details object represents a single details element.
|
|
*
|
|
* @constructor Drupal.CollapsibleDetails
|
|
*
|
|
* @param {HTMLElement} node
|
|
*/
|
|
function CollapsibleDetails(node) {
|
|
this.$node = $(node);
|
|
this.$node.data('details', this);
|
|
// Expand details if there are errors inside, or if it contains an
|
|
// element that is targeted by the URI fragment identifier.
|
|
var anchor = location.hash && location.hash !== '#' ? ', ' + location.hash : '';
|
|
if (this.$node.find('.error' + anchor).length) {
|
|
this.$node.attr('open', true);
|
|
}
|
|
// Initialize and setup the summary,
|
|
this.setupSummary();
|
|
// Initialize and setup the legend.
|
|
this.setupLegend();
|
|
}
|
|
|
|
$.extend(CollapsibleDetails, /** @lends Drupal.CollapsibleDetails */{
|
|
|
|
/**
|
|
* Holds references to instantiated CollapsibleDetails objects.
|
|
*
|
|
* @type {Array.<Drupal.CollapsibleDetails>}
|
|
*/
|
|
instances: []
|
|
});
|
|
|
|
$.extend(CollapsibleDetails.prototype, /** @lends Drupal.CollapsibleDetails# */{
|
|
|
|
/**
|
|
* Initialize and setup summary events and markup.
|
|
*
|
|
* @fires event:summaryUpdated
|
|
*
|
|
* @listens event:summaryUpdated
|
|
*/
|
|
setupSummary: function () {
|
|
this.$summary = $('<span class="summary"></span>');
|
|
this.$node
|
|
.on('summaryUpdated', $.proxy(this.onSummaryUpdated, this))
|
|
.trigger('summaryUpdated');
|
|
},
|
|
|
|
/**
|
|
* Initialize and setup legend markup.
|
|
*/
|
|
setupLegend: function () {
|
|
// Turn the summary into a clickable link.
|
|
var $legend = this.$node.find('> summary');
|
|
|
|
$('<span class="details-summary-prefix visually-hidden"></span>')
|
|
.append(this.$node.attr('open') ? Drupal.t('Hide') : Drupal.t('Show'))
|
|
.prependTo($legend)
|
|
.after(document.createTextNode(' '));
|
|
|
|
// .wrapInner() does not retain bound events.
|
|
$('<a class="details-title"></a>')
|
|
.attr('href', '#' + this.$node.attr('id'))
|
|
.prepend($legend.contents())
|
|
.appendTo($legend);
|
|
|
|
$legend
|
|
.append(this.$summary)
|
|
.on('click', $.proxy(this.onLegendClick, this));
|
|
},
|
|
|
|
/**
|
|
* Handle legend clicks.
|
|
*
|
|
* @param {jQuery.Event} e
|
|
*/
|
|
onLegendClick: function (e) {
|
|
this.toggle();
|
|
e.preventDefault();
|
|
},
|
|
|
|
/**
|
|
* Update summary.
|
|
*/
|
|
onSummaryUpdated: function () {
|
|
var text = $.trim(this.$node.drupalGetSummary());
|
|
this.$summary.html(text ? ' (' + text + ')' : '');
|
|
},
|
|
|
|
/**
|
|
* Toggle the visibility of a details element using smooth animations.
|
|
*/
|
|
toggle: function () {
|
|
var isOpen = !!this.$node.attr('open');
|
|
var $summaryPrefix = this.$node.find('> summary span.details-summary-prefix');
|
|
if (isOpen) {
|
|
$summaryPrefix.html(Drupal.t('Show'));
|
|
}
|
|
else {
|
|
$summaryPrefix.html(Drupal.t('Hide'));
|
|
}
|
|
// Delay setting the attribute to emulate chrome behavior and make
|
|
// details-aria.js work as expected with this polyfill.
|
|
setTimeout(function () {
|
|
this.$node.attr('open', !isOpen);
|
|
}.bind(this), 0);
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Polyfill HTML5 details element.
|
|
*
|
|
* @type {Drupal~behavior}
|
|
*/
|
|
Drupal.behaviors.collapse = {
|
|
attach: function (context) {
|
|
if (Modernizr.details) {
|
|
return;
|
|
}
|
|
var $collapsibleDetails = $(context).find('details').once('collapse').addClass('collapse-processed');
|
|
if ($collapsibleDetails.length) {
|
|
for (var i = 0; i < $collapsibleDetails.length; i++) {
|
|
CollapsibleDetails.instances.push(new CollapsibleDetails($collapsibleDetails[i]));
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
// Expose constructor in the public space.
|
|
Drupal.CollapsibleDetails = CollapsibleDetails;
|
|
|
|
})(jQuery, Modernizr, Drupal);
|