{"version":3,"file":"backtotopbutton.min.js","sources":["https:\/\/moodle-test3.univ-paris1.fr\/theme\/boost_union\/amd\/src\/backtotopbutton.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 * Theme Boost Union - JS code back to top button\n *\n * @module     theme_boost_union\/backtotopbutton\n * @copyright  2022 Alexander Bias, lern.link GmbH <alexander.bias@lernlink.de>\n * @copyright  on behalf of Zurich University of Applied Sciences (ZHAW)\n * @copyright  based on code from theme_boost_campus by Kathrin Osswald.\n * @license    http:\/\/www.gnu.org\/copyleft\/gpl.html GNU GPL v3 or later\n *\/\n\ndefine(['jquery', 'core\/str', 'core\/notification'], function($, str, Notification) {\n    \"use strict\";\n\n    \/\/ Remember if the back to top button is shown currently.\n    let buttonShown = false;\n\n    \/**\n     * Initializing.\n     *\/\n    function initBackToTop() {\n        \/\/ Define the scroll distance after which the button will be shown.\n        const scrolldistance = 220;\n\n        \/\/ Get the string backtotop from language file.\n        let stringsPromise = str.get_string('backtotop', 'theme_boost_union');\n\n        \/\/ If the string has arrived, add backtotop button to DOM and add scroll and click handlers.\n        $.when(stringsPromise).then(function(string) {\n            \/\/ Add a fontawesome icon to the footer as the back to top button.\n            $('#boost-union-footer-buttons').prepend('<button id=\"back-to-top\" ' +\n                    'class=\"btn btn-icon bg-secondary icon-no-margin d-print-none\"' +\n                    'aria-label=\"' + string + '\">' +\n                    '<i aria-hidden=\"true\" class=\"fa fa-chevron-up fa-fw \"><\/i><\/button>');\n\n            \/\/ Check directly if the button should be shown.\n            \/\/ This is helpful for all cases when this code here runs _after_ the page has been scrolled,\n            \/\/ especially by the scrollspy feature or by a simple browser page reload.\n            if ($(window).scrollTop() > scrolldistance) {\n                checkAndShow();\n            } else {\n                checkAndHide();\n            }\n\n            \/\/ This function fades the button in when the page is scrolled down or fades it out\n            \/\/ if the user is at the top of the page again.\n            $(window).on('scroll', function() {\n                if ($(window).scrollTop() > scrolldistance) {\n                    checkAndShow();\n                } else {\n                    checkAndHide();\n                }\n            });\n\n            \/\/ This function scrolls the page to top with a duration of 500ms.\n            $('#back-to-top').on('click', function(event) {\n                event.preventDefault();\n                $('html, body').animate({scrollTop: 0}, 500);\n                $('#back-to-top').blur();\n            });\n\n            return true;\n        }).fail(Notification.exception);\n    }\n\n    \/**\n     * Helper function to handle the button visibility when the page is scrolling up.\n     *\/\n    function checkAndHide() {\n        \/\/ Check if the button is still shown.\n        if (buttonShown === true) {\n            \/\/ Fade it out and remember the status in the end.\n            \/\/ To be precise, the faceOut() function will be called multiple times as buttonShown is not set until the button is\n            \/\/ really faded out. However, as soon as it is faded out, it won't be called until the button is shown again.\n            $('#back-to-top').fadeOut(100, function() {\n                buttonShown = false;\n            });\n        }\n    }\n\n    \/**\n     * Helper function to handle the button visibility when the page is scrolling down.\n     *\/\n    function checkAndShow() {\n        \/\/ Check if the button is not yet shown.\n        if (buttonShown === false) {\n            \/\/ Fade it in and remember the status in the end.\n            $('#back-to-top').fadeIn(300, function() {\n                buttonShown = true;\n            });\n        }\n    }\n\n    return {\n        init: function() {\n            initBackToTop();\n        }\n    };\n});\n"],"names":["define","$","str","Notification","buttonShown","checkAndHide","fadeOut","checkAndShow","fadeIn","init","stringsPromise","get_string","when","then","string","prepend","window","scrollTop","on","event","preventDefault","animate","blur","fail","exception","initBackToTop"],"mappings":";;;;;;;;;AAyBAA,2CAAO,CAAC,SAAU,WAAY,sBAAsB,SAASC,EAAGC,IAAKC,kBAI7DC,aAAc,WAqDTC,gBAEe,IAAhBD,aAIAH,EAAE,gBAAgBK,QAAQ,KAAK,WAC3BF,aAAc,cAQjBG,gBAEe,IAAhBH,aAEAH,EAAE,gBAAgBO,OAAO,KAAK,WAC1BJ,aAAc,WAKnB,CACHK,KAAM,2BArEFC,eAAiBR,IAAIS,WAAW,YAAa,qBAGjDV,EAAEW,KAAKF,gBAAgBG,MAAK,SAASC,eAEjCb,EAAE,+BAA+Bc,QAAQ,qGAEhBD,OAFgB,yEAQrCb,EAAEe,QAAQC,YAhBK,IAiBfV,eAEAF,eAKJJ,EAAEe,QAAQE,GAAG,UAAU,WACfjB,EAAEe,QAAQC,YAzBC,IA0BXV,eAEAF,kBAKRJ,EAAE,gBAAgBiB,GAAG,SAAS,SAASC,OACnCA,MAAMC,iBACNnB,EAAE,cAAcoB,QAAQ,CAACJ,UAAW,GAAI,KACxChB,EAAE,gBAAgBqB,WAGf,KACRC,KAAKpB,aAAaqB,WAiCjBC"}