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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Javascript for dynamically changing the page limits.
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*
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* @module core/paged_content_paging_bar_limit_selector
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* @copyright 2018 Ryan Wyllie <ryan@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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define(
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[
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'jquery',
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'core/custom_interaction_events',
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'core/paged_content_events',
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'core/pubsub'
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],
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function(
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$,
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CustomEvents,
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PagedContentEvents,
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PubSub
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) {
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var SELECTORS = {
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ROOT: '[data-region="paging-control-limit-container"]',
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LIMIT_OPTION: '[data-limit]',
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LIMIT_TOGGLE: '[data-action="limit-toggle"]',
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};
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/**
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* Trigger the SET_ITEMS_PER_PAGE_LIMIT event when the page limit option
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* is modified.
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*
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* @param {object} root The root element.
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* @param {string} id A unique id for this instance.
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*/
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var init = function(root, id) {
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root = $(root);
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CustomEvents.define(root, [
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CustomEvents.events.activate
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]);
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root.on(CustomEvents.events.activate, SELECTORS.LIMIT_OPTION, function(e, data) {
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var optionElement = $(e.target).closest(SELECTORS.LIMIT_OPTION);
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if (optionElement.hasClass('active')) {
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// Don't do anything if it was the active option selected.
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return;
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}
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var limit = parseInt(optionElement.attr('data-limit'), 10);
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// Tell the rest of the pagination components that the limit has changed.
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PubSub.publish(id + PagedContentEvents.SET_ITEMS_PER_PAGE_LIMIT, limit);
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data.originalEvent.preventDefault();
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});
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};
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return {
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init: init,
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rootSelector: SELECTORS.ROOT
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};
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});
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