drupal/core/misc/form.js

83 lines
2.5 KiB
JavaScript

(function ($) {
"use strict";
/**
* Retrieves the summary for the first element.
*/
$.fn.drupalGetSummary = function () {
var callback = this.data('summaryCallback');
return (this[0] && callback) ? $.trim(callback(this[0])) : '';
};
/**
* Sets the summary for all matched elements.
*
* @param callback
* Either a function that will be called each time the summary is
* retrieved or a string (which is returned each time).
*/
$.fn.drupalSetSummary = function (callback) {
var self = this;
// To facilitate things, the callback should always be a function. If it's
// not, we wrap it into an anonymous function which just returns the value.
if (typeof callback !== 'function') {
var val = callback;
callback = function () { return val; };
}
return this
.data('summaryCallback', callback)
// To prevent duplicate events, the handlers are first removed and then
// (re-)added.
.off('formUpdated.summary')
.on('formUpdated.summary', function () {
self.trigger('summaryUpdated');
})
// The actual summaryUpdated handler doesn't fire when the callback is
// changed, so we have to do this manually.
.trigger('summaryUpdated');
};
/**
* Sends a 'formUpdated' event each time a form element is modified.
*/
Drupal.behaviors.formUpdated = {
attach: function (context) {
// These events are namespaced so that we can remove them later.
var events = 'change.formUpdated click.formUpdated blur.formUpdated keyup.formUpdated';
$(context)
// Since context could be an input element itself, it's added back to
// the jQuery object and filtered again.
.find(':input').addBack().filter(':input')
// To prevent duplicate events, the handlers are first removed and then
// (re-)added.
.off(events).on(events, function () {
$(this).trigger('formUpdated');
});
}
};
/**
* Prepopulate form fields with information from the visitor cookie.
*/
Drupal.behaviors.fillUserInfoFromCookie = {
attach: function (context, settings) {
var userInfo = ['name', 'mail', 'homepage'];
$('form.user-info-from-cookie').once('user-info-from-cookie', function () {
var $formContext = $(this);
var i, il, $element, cookie;
for (i = 0, il = userInfo.length; i < il; i += 1) {
$element = $formContext.find('[name=' + userInfo[i] + ']');
cookie = $.cookie('Drupal.visitor.' + userInfo[i]);
if ($element.length && cookie) {
$element.val(cookie);
}
}
});
}
};
})(jQuery);