{"version":3,"file":"collapsenavdrawernodes.min.js","sources":["https:\/\/edujustic.justicia.es\/local\/boostnavigation\/amd\/src\/collapsenavdrawernodes.js"],"sourcesContent":["\/\/ This file is part of Moodle - http:\/\/moodle.org\/\n\/\/\n\/\/ Moodle is free software: you can redistribute it and\/or modify\n\/\/ it under the terms of the GNU General Public License as published by\n\/\/ the Free Software Foundation, either version 3 of the License, or\n\/\/ (at your option) any later version.\n\/\/\n\/\/ Moodle is distributed in the hope that it will be useful,\n\/\/ but WITHOUT ANY WARRANTY; without even the implied warranty of\n\/\/ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n\/\/ GNU General Public License for more details.\n\/\/\n\/\/ You should have received a copy of the GNU General Public License\n\/\/ along with Moodle.  If not, see <http:\/\/www.gnu.org\/licenses\/>.\n\n\/**\n * Local plugin \"Boost navigation fumbling\" - JS code for collapsing nav drawer nodes\n *\n * @module     local_boostnavigation\/collapsenavdrawernodes\n * @copyright  2017 Alexander Bias, Ulm University <alexander.bias@uni-ulm.de>\n * @copyright  2017 Kathrin Osswald, Ulm University <kathrin.osswald@uni-ulm.de>\n * @license    http:\/\/www.gnu.org\/copyleft\/gpl.html GNU GPL v3 or later\n *\/\n\ndefine(['jquery'], function($) {\n    \"use strict\";\n\n    \/**\n     * Click handler to toggle the given nav node.\n     * @param {Object} node The nav node which should be toggled.\n     * @param {string} nodename The nav node's nodename.\n     *\/\n    function toggleClickHandler(node, nodename) {\n        node.click(function(e) {\n            \/\/ Prevent that the browser opens the node's default action link (if existing).\n            e.preventDefault();\n\n            \/\/ If the parent node is currently expanded.\n            if (node.hasClass('localboostnavigationcollapsedparent') === false) {\n                \/\/ Collapse the node.\n                collapseNode(node, nodename);\n\n                \/\/ If the parent node is currently collapsed.\n            } else if (node.hasClass('localboostnavigationcollapsedparent') === true) {\n                \/\/ Expand the node.\n                expandNode(node, nodename);\n\n                \/\/ If the parent node is configured to act as accordion.\n                var accordionTarget = node.attr('data-localboostnavigation-accordion');\n                if (typeof accordionTarget !== \"undefined\") {\n                    \/\/ Collapse all sibling parent nodes.\n                    $('.list-group-item.localboostnavigationcollapsibleparent[data-key^=\"' + accordionTarget + '\"]')\n                            .each(\/* @this *\/function() {\n                        \/\/ But not the node which has been clicked by the user.\n                        if ($(this).attr('data-key') !== node.attr('data-key')) {\n                            collapseNode($(this), $(this).attr('data-key'));\n                        }\n                    });\n                }\n            }\n        });\n    }\n\n    \/**\n     * Helper function to collapse the given nav node.\n     * @param {Object} node The nav node which should be toggled.\n     * @param {string} nodename The nav node's nodename.\n     *\/\n    function collapseNode(node, nodename) {\n        \/\/ Set the localboostnavigationcollapsedchild class for all elements which have the nodename as their data-parent-key\n        \/\/ attribute.\n        $('.list-group-item[data-parent-key=' + nodename + ']').addClass('localboostnavigationcollapsedchild');\n        \/\/ Set the localboostnavigationcollapsedparent class of the node itself.\n        node.addClass('localboostnavigationcollapsedparent');\n        \/\/ Change the aria-expanded attribute of the node itself to false.\n        node.attr(\"aria-expanded\", \"0\");\n        \/\/ Save this state to the user preferences.\n        M.util.set_user_preference('local_boostnavigation-collapse_' + nodename + 'node', 1);\n     }\n\n    \/**\n     * Helper function to expand the given nav node.\n     * @param {Object} node The nav node which should be toggled.\n     * @param {string} nodename The nav node's nodename.\n     *\/\n    function expandNode(node, nodename) {\n        \/\/ Remove the localboostnavigationcollapsedchild class from all elements which have the nodename as their data-parent-key\n        \/\/ attribute.\n        $('.list-group-item[data-parent-key=' + nodename + ']').removeClass('localboostnavigationcollapsedchild');\n        \/\/ Remove the localboostnavigationcollapsedparent class of the node itself.\n        node.removeClass('localboostnavigationcollapsedparent');\n        \/\/ Change the aria-expanded attribute of the node itself to true.\n        node.attr(\"aria-expanded\", \"1\");\n        \/\/ Save this state to the user preferences.\n        M.util.set_user_preference('local_boostnavigation-collapse_' + nodename + 'node', 0);\n    }\n\n    \/**\n     * Add aria-attributes to a parent node.\n     * @param {Object} node The nav node which should get the aria-attributes.\n     * @param {string} nodename The nav node's nodename.\n     *\/\n    function addAriaToParent(node, nodename) {\n        \/\/ Add ids to the child nodes for referencing in aria-controls.\n        \/\/ Initialize string variable to remember the child node ids.\n        var ids = '';\n        \/\/ Get the elements which have the nodename as their data-parent-key attribute.\n        $('.list-group-item[data-parent-key=' + nodename + ']').each(function(index, element) {\n            \/\/ Get its data-key attribute (which should be unique) to be used as id attribute.\n            var id = $(element).attr('data-key');\n            \/\/ Prefix the id attribute if it wasn't built by us.\n            if (id.substring(0, 10) !== 'localboost') {\n                id = 'localboostnavigation' + id;\n            }\n            \/\/ Set the id attribute.\n            $(element).attr('id', id);\n            \/\/ Remember the id attribute for later use.\n            ids = ids + id + ' ';\n        });\n\n        \/\/ Add aria-controls attribute if we have ids to reference.\n        if (ids !== '') {\n            node.attr('aria-controls', ids.trim());\n        }\n\n        \/\/ Add aria-expanded attribute.\n        \/\/ If the parent node is currently expanded.\n        if (node.hasClass('localboostnavigationcollapsedparent') === false) {\n            \/\/ Set the aria-expanded attribute of the node itself to false.\n            node.attr('aria-expanded', '1');\n\n            \/\/ If the parent node is currently collapsed.\n        } else if (node.hasClass('localboostnavigationcollapsedparent') === true) {\n            \/\/ Set the aria-expanded attribute of the node itself to true.\n            node.attr('aria-expanded', '0');\n        }\n    }\n\n    \/**\n     * Add accessibility to a div node which doesn't behave like an a node.\n     * @param {Object} node The nav node which should be made tabbable.\n     *\/\n    function tabbableDiv(node) {\n        \/\/ Add tabindex attribute so that it will be respected by the browser when the user tabs through the page's elements.\n        node.attr('tabindex', '0');\n\n        \/\/ Also call the click handler when the user presses the Enter button.\n        node.keydown(function(e) {\n            if (e.which === 13) {\n                e.currentTarget.click();\n            }\n        });\n\n        \/\/ As we added a tabindex attribute, the element gets an element focus outline as soon as it's clicked, too.\n        \/\/ Try to prevent this hereby.\n        node.mousedown(function() {\n            node.css('outline', 'none');\n        });\n        node.mouseup(function() {\n            node.css('outline', '');\n            node.blur();\n        });\n    }\n\n    \/**\n     * Init function of this AMD module which initializes the click handlers.\n     * @param {string} nodename The nav node's nodename.\n     *\/\n    function initToggleNodes(nodename) {\n        \/\/ Search node to be collapsible.\n        var node = $('.list-group-item[data-key=\"' + nodename + '\"]');\n\n        \/\/ Add a click handler to this node.\n        toggleClickHandler(node, nodename);\n\n        \/\/ Add aria-attributes to this node.\n        addAriaToParent(node, nodename);\n\n        \/\/ Make the mycourses node accessible (all other nodes are fine).\n        if (nodename == 'mycourses') {\n            tabbableDiv(node);\n        }\n    }\n\n    \/**\n     * Init function of this AMD module which marks the accordion nodes.\n     * @param {string} nodename The nav node's nodename.\n     *\/\n    function initAccordionNodes(nodename) {\n        \/\/ Mark node as accordion.\n        $('.list-group-item.localboostnavigationcollapsibleparent[data-key^=\"' + nodename + '\"]')\n                .attr('data-localboostnavigation-accordion', nodename);\n    }\n\n    return {\n        init: function(toggleNodes, accordionNodes) {\n            \/\/ Initialize toggle nodes.\n            for (var i = 0, tLen = toggleNodes.length; i < tLen; i++) {\n                initToggleNodes(toggleNodes[i]);\n            }\n            \/\/ Initialize accordion nodes.\n            for (var j = 0, aLen = accordionNodes.length; j < aLen; j++) {\n                initAccordionNodes(accordionNodes[j]);\n            }\n        }\n    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