73 lines
1.5 KiB
JavaScript
73 lines
1.5 KiB
JavaScript
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/*
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* Greedy Navigation
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*
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* http://codepen.io/lukejacksonn/pen/PwmwWV
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*
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*/
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var $nav = $('#site-nav');
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var $btn = $('#site-nav button');
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var $vlinks = $('#site-nav .visible-links');
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var $hlinks = $('#site-nav .hidden-links');
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var breaks = [];
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function updateNav() {
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var availableSpace = $btn.hasClass('hidden') ? $nav.width() : $nav.width() - $btn.width() - 30;
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// The visible list is overflowing the nav
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if($vlinks.width() > availableSpace) {
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// Record the width of the list
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breaks.push($vlinks.width());
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// Move item to the hidden list
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$vlinks.children().last().prependTo($hlinks);
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// Show the dropdown btn
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if($btn.hasClass('hidden')) {
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$btn.removeClass('hidden');
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}
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// The visible list is not overflowing
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} else {
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// There is space for another item in the nav
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if(availableSpace > breaks[breaks.length-1]) {
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// Move the item to the visible list
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$hlinks.children().first().appendTo($vlinks);
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breaks.pop();
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}
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// Hide the dropdown btn if hidden list is empty
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if(breaks.length < 1) {
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$btn.addClass('hidden');
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$hlinks.addClass('hidden');
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}
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}
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// Keep counter updated
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$btn.attr("count", breaks.length);
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// Recur if the visible list is still overflowing the nav
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if($vlinks.width() > availableSpace) {
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updateNav();
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}
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}
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// Window listeners
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$(window).resize(function() {
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updateNav();
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});
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$btn.on('click', function() {
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$hlinks.toggleClass('hidden');
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$(this).toggleClass('close');
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});
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updateNav();
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