Code Changes

/**
 * Handler for submitting permissions form in chunks
 * This call will submit permissions forms in chunks of 5 fieldsets.
 */
function submitPermissions() {
	var $form = $('form#set-permissions'),
		fieldsetList = $form.find('fieldset[id^=perm]'),
		formDataSets = [],
		$submitAllButton = $form.find('input[type=submit][name^=action]')[0],
		$submitButton = $form.find('input[type=submit][data-clicked=true]')[0];

	// Set proper start values for handling refresh of page
	var permissionSubmitSize = 0,
		permissionRequestCount = 0,
		forumIds = [],
		permissionSubmitFailed = false;

	if ($submitAllButton !== $submitButton) {
		fieldsetList = $form.find('fieldset#' + $submitButton.closest('fieldset.permissions').id);
	}

	$.each(fieldsetList, function (key, value) {
		if (key % 5 === 0) {
			formDataSets[Math.floor(key / 5)] = $form.find('fieldset#' + value.id).serialize();
		} else {
			formDataSets[Math.floor(key / 5)] += '&' + $form.find('fieldset#' + value.id).serialize();
		}
	});

	permissionSubmitSize = formDataSets.length;

	// Add each forum ID to forum ID list to preserve selected forums
	$.each($form.find('input[type=hidden][name^=forum_id]'), function (key, value) {
		if (value.name.match(/^forum_id\[([0-9]+)\]$/)) {
			forumIds.push(value.value);
		}
	});

	/**
	 * Handler for submitted permissions form chunk
	 *
	 * @param {object} res Object returned by AJAX call
	 */
	function handlePermissionReturn(res) {
		permissionRequestCount++;
		var $dark = $('#darkenwrapper');

		if (res.S_USER_WARNING) {
			phpbb.alert(res.MESSAGE_TITLE, res.MESSAGE_TEXT);
			permissionSubmitFailed = true;
		} else if (!permissionSubmitFailed && res.S_USER_NOTICE) {
			// Display success message at the end of submitting the form
			if (permissionRequestCount >= permissionSubmitSize) {
				var $alert = phpbb.alert(res.MESSAGE_TITLE, res.MESSAGE_TEXT);
				var $alertBoxLink = $alert.find('p.alert_text > a');

				// Create form to submit instead of normal "Back to previous page" link
				if ($alertBoxLink) {
					// Remove forum_id[] from URL
					$alertBoxLink.attr('href', $alertBoxLink.attr('href').replace(/(&forum_id\[\]=[0-9]+)/g, ''));
					var previousPageForm = '<form action="' + $alertBoxLink.attr('href') + '" method="post">';
					$.each(forumIds, function (key, value) {
						previousPageForm += '<input type="text" name="forum_id[]" value="' + value + '" />';
					});
					previousPageForm += '</form>';

					$alertBoxLink.on('click', function (e) {
						var $previousPageForm = $(previousPageForm);
						$('body').append($previousPageForm);
						e.preventDefault();
						$previousPageForm.submit();
					});
				}

				// Do not allow closing alert
				$dark.off('click');
				$alert.find('.alert_close').hide();

				if (typeof res.REFRESH_DATA !== 'undefined') {
					setTimeout(function () {
						// Create forum to submit using POST. This will prevent
						// exceeding the maximum length of URLs
						var form = '<form action="' + res.REFRESH_DATA.url.replace(/(&forum_id\[\]=[0-9]+)/g, '') + '" method="post">';
						$.each(forumIds, function (key, value) {
							form += '<input type="text" name="forum_id[]" value="' + value + '" />';
						});
						form += '</form>';
						$form = $(form);
						$('body').append($form);

						// Hide the alert even if we refresh the page, in case the user
						// presses the back button.
						$dark.fadeOut(phpbb.alertTime, function () {
							if (typeof $alert !== 'undefined') {
								$alert.hide();
							}
						});

						// Submit form
						$form.submit();
					}, res.REFRESH_DATA.time * 1000); // Server specifies time in seconds
				}
			}
		}
	}

	// Create AJAX request for each form data set
	$.each(formDataSets, function (key, formData) {
		$.ajax({
			url: $form.action,
			type: 'POST',
			data: formData + '&' + $submitButton.name + '=' + encodeURIComponent($submitButton.value) +
				'&creation_time=' + $form.find('input[type=hidden][name=creation_time]')[0].value +
				'&form_token=' + $form.find('input[type=hidden][name=form_token]')[0].value +
				'&' + $form.children('input[type=hidden]').serialize() +
				'&' + $form.find('input[type=checkbox][name^=inherit]').serialize(),
			success: handlePermissionReturn,
			error: handlePermissionReturn
		});
	});
}

	var $setPermissionsForm = $('form#set-permissions');
	if ($setPermissionsForm.length) {
		$setPermissionsForm.on('submit', function (e) {
			submitPermissions();
			e.preventDefault();
		});
		$setPermissionsForm.find('input[type=submit]').click(function() {
			$('input[type=submit]', $(this).parents($('form#set-permissions'))).removeAttr('data-clicked');
			$(this).attr('data-clicked', true);
		});
	}