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91 lines
2.9 KiB
JavaScript
91 lines
2.9 KiB
JavaScript
/**
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* Dieses Modul hat nur die Aufgabe den Filter-Zähler zu aktualisieren.
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*
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* D.h. es wird die Anzahl der aktiven Filter in einem Filter-Block angezeigt und bei Änderung aktualisiert.
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*/
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var FilterCountIndicator = (function ($) {
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"use strict";
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var me = {
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storage: {
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$reveals: null
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},
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init: function () {
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me.storage.$reveals = $('.filter-reveal');
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if (me.storage.length === 0) {
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return;
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}
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// Initial Filter-Zähler füllen
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me.storage.$reveals.each(function () {
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me.countActiveFilters($(this));
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});
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me.registerEvents();
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},
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registerEvents: function () {
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// Bei Änderung der Filter-Elemente > Zähler aktualisieren
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me.storage.$reveals.each(function () {
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var $inputs = $(this).find('.filter-item').find('input');
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$inputs.on('change keyup', function (event) {
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var $filterBlock = $(event.target).closest('.filter-block');
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var isReveal = $filterBlock.hasClass('filter-reveal');
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if (isReveal) {
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me.countActiveFilters($filterBlock)
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}
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});
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});
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},
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/**
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* Filter-Zähler aktualisieren
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*
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* Methode durchläuft alle Input-Elemente eines Filter-Blocks,
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* zählt die aktiven Filter und aktualisiert den Filter-Zähler.
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*
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* @param {jQuery} $filterBlock Filter-Block als jQuery-Element
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*/
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countActiveFilters: function ($filterBlock) {
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var activeFilterCounter = 0;
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// Alle Form-Elemente im Filter-Block durchlaufen und zählen wieviele Filter aktiv sind
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$filterBlock.find('.filter-item').find('input').each(function () {
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var $formElem = $(this);
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var isCheckbox = $formElem.attr('type') === 'checkbox';
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var value = isCheckbox ? $formElem.prop('checked') : $formElem.val();
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if (value === true || value.length > 0) {
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activeFilterCounter++;
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}
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});
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// Counter-Label erstellen/aktualisieren
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var $title = $filterBlock.find('.filter-title');
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var $counter = $title.find('.filter-counter');
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var titleHasCounter = $counter.length > 0;
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if (!titleHasCounter) {
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$counter = $('<span>').addClass('filter-counter');
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$title.append($counter);
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}
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$counter.html(activeFilterCounter);
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if (activeFilterCounter === 0) {
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$counter.hide();
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} else {
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$counter.show();
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}
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}
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};
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return {
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init: me.init
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}
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})(jQuery);
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$(document).ready(function () {
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FilterCountIndicator.init();
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});
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