84 lines
2.0 KiB
JavaScript
84 lines
2.0 KiB
JavaScript
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/*
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GreedyNav.js - https://github.com/lukejacksonn/GreedyNav
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Licensed under the MIT license - http://opensource.org/licenses/MIT
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Copyright (c) 2015 Luke Jackson
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*/
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$(document).ready(function() {
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var $btn = $("nav.greedy-nav .greedy-nav__toggle");
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var $vlinks = $("nav.greedy-nav .visible-links");
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var $hlinks = $("nav.greedy-nav .hidden-links");
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var numOfItems = 0;
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var totalSpace = 0;
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var closingTime = 1000;
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var breakWidths = [];
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// Get initial state
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$vlinks.children().outerWidth(function(i, w) {
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totalSpace += w;
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numOfItems += 1;
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breakWidths.push(totalSpace);
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});
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var availableSpace, numOfVisibleItems, requiredSpace, timer;
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function check() {
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// Get instant state
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availableSpace = $vlinks.width() - $btn.width();
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numOfVisibleItems = $vlinks.children().length;
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requiredSpace = breakWidths[numOfVisibleItems - 1];
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// There is not enough space
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if (requiredSpace > availableSpace) {
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$vlinks
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.children()
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.last()
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.prependTo($hlinks);
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numOfVisibleItems -= 1;
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check();
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// There is more than enough space
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} else if (availableSpace > breakWidths[numOfVisibleItems]) {
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$hlinks
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.children()
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.first()
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.appendTo($vlinks);
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numOfVisibleItems += 1;
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check();
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}
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// Update the button accordingly
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$btn.attr("count", numOfItems - numOfVisibleItems);
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if (numOfVisibleItems === numOfItems) {
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$btn.addClass("hidden");
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} else {
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$btn.removeClass("hidden");
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}
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}
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// Window listeners
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$(window).resize(function() {
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check();
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});
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$btn.on("click", function() {
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$hlinks.toggleClass("hidden");
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$(this).toggleClass("close");
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clearTimeout(timer);
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});
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$hlinks
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.on("mouseleave", function() {
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// Mouse has left, start the timer
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timer = setTimeout(function() {
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$hlinks.addClass("hidden");
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$btn.toggleClass("close");
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}, closingTime);
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})
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.on("mouseenter", function() {
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// Mouse is back, cancel the timer
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clearTimeout(timer);
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});
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check();
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});
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