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(function () { |
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// Has the user previously consented, establish our |
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// initial state |
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let selected = []; |
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let existingConsent = ''; |
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// The presence of a 'cookieConsent' local storage item indicates |
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// that previous consent has been set. If the value is empty, then |
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// no consent to non-essential cookies was given |
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const hasStoredConsent = localStorage.getItem('cookieConsent'); |
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getExistingConsent(); |
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|
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// The consent bar may not be in the DOM if it is not being used |
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const consentBar = $('#cookieConsentBar'); |
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if (!consentBar) { |
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return; |
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} |
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if (hasStoredConsent === null) { |
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showConsentBar(); |
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} else { |
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showYourCookies(); |
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} |
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addButtonHandlers(); |
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|
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// When the modal is opened, populate our state based on currently |
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// selected values |
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$('#cookieConsentModal').on('shown.bs.modal', function () { |
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initialiseSelected(); |
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}); |
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|
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// Initialise existing consent based on local storage |
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function getExistingConsent() { |
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existingConsent = localStorage.getItem('cookieConsent') ? |
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localStorage.getItem('cookieConsent') : |
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[]; |
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} |
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|
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function showConsentBar() { |
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const consentBar = $('#cookieConsentBar'); |
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consentBar.attr('aria-hidden', 'false'); |
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consentBar.show(); |
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} |
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|
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function hideConsentBar() { |
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const consentBar = $('#cookieConsentBar'); |
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consentBar.attr('aria-hidden', 'true'); |
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consentBar.hide(); |
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} |
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|
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// Hides the appropriate consent container, depending on what |
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// is currently visible |
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function hideContainer() { |
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if ($('#cookieConsentModal').hasClass('show')) { |
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$('#cookieConsentModal').modal('hide'); |
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} else { |
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hideConsentBar(); |
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} |
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} |
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|
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// Show the unauthenticated user's "Your cookies" button |
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function showYourCookies() { |
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// If the user is unauthenticated, there will be a |
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// cookieConsentsButton element in the DOM. The user |
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// has previously consented, so we need to display this |
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// button |
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const consentButton = $('#cookieConsentButton'); |
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if (consentButton.length > 0) { |
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consentButton.attr('aria-hidden', 'false'); |
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consentButton.show(); |
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} |
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} |
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|
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// Initialise our state of selected item and enable/disable |
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// the "Accept selected" button appropriately |
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function initialiseSelected() { |
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selected = []; |
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$('.consentCheckbox').each(function () { |
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const val = $(this).val(); |
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if (existingConsent.indexOf(val) > -1 ) { |
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$(this).prop('checked', true); |
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selected.push(val); |
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} else { |
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$(this).prop('checked', false); |
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} |
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}); |
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enableDisableSelectedButton(); |
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} |
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|
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// Maintain our state of selected items and enable/disable |
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// the "Accept selected" button appropriately |
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function maintainSelected() { |
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selected = []; |
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$('.consentCheckbox:checked').each(function () { |
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selected.push($(this).val()); |
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}); |
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enableDisableSelectedButton(); |
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} |
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|
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// Set the enabled / disabled state of the |
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// "Accept selected button based on the checkbox |
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// states |
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function enableDisableSelectedButton() { |
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$('#consentAcceptSelected').prop( |
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'disabled', |
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selected.length === 0 |
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); |
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} |
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|
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function runConsentedCode() { |
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getExistingConsent(); |
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$('.consentCode').each(function () { |
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// The user has explicitly consented to this code, or the |
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// code doesn't require consent in the OPAC |
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if ( |
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existingConsent.indexOf($(this).data('consent-id')) > -1 || |
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!$(this).data('requires-consent') |
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) { |
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const code = atob($(this).data('consent-code')); |
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const func = Function(code); |
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func(); |
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} |
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}); |
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} |
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|
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function addButtonHandlers() { |
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// "Accept all" handler |
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$('.consentAcceptAll').on('click', function(e) { |
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e.preventDefault(); |
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let toSave = []; |
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$('.consentCheckbox').each(function () { |
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const val = $(this).val(); |
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toSave.push(val); |
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}); |
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localStorage.setItem('cookieConsent', toSave); |
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hideContainer(); |
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runConsentedCode(); |
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showYourCookies(); |
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}); |
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|
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// "Accept essential" handler |
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$('.consentAcceptEssential').on('click', function(e) { |
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e.preventDefault(); |
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localStorage.setItem('cookieConsent', []); |
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hideContainer(); |
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showYourCookies(); |
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}); |
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|
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// "Accept selected" handler |
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$('#consentAcceptSelected').on('click', function(e) { |
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e.preventDefault(); |
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const toSave = selected.length > 0 ? selected : []; |
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localStorage.setItem('cookieConsent', toSave); |
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hideContainer(); |
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runConsentedCode(); |
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showYourCookies(); |
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}); |
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|
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// "More information" handler |
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$('#consentMoreInfo, #cookieConsentButton, #viewCookieConsents').on( |
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'click', |
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function (e) { |
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e.preventDefault(); |
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hideConsentBar(); |
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// Ensure we're up to date with the existing consent |
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getExistingConsent(); |
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// Prevent the modal from being closed with anything |
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// but the buttons |
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$('#cookieConsentModal') |
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.modal({ |
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backdrop: 'static', |
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keyboard: false, |
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focus: true, |
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show: true |
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}); |
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} |
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); |
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$('.consentCheckbox').on('click', function () { |
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maintainSelected(); |
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}); |
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} |
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|
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// On page load, run any code that has been given consent |
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runConsentedCode(); |
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})(); |