hacks-guide-minimal-mistake.../docs/assets/js/plugins/jquery.greedy-navigation.js
2017-02-21 10:08:09 -05:00

74 lines
No EOL
1.9 KiB
JavaScript

/*
GreedyNav.js - https://github.com/lukejacksonn/GreedyNav
Licensed under the MIT license - http://opensource.org/licenses/MIT
Copyright (c) 2015 Luke Jackson
*/
$(document).ready(function(){
var $btn = $('nav.greedy-nav button');
var $vlinks = $('nav.greedy-nav .visible-links');
var $hlinks = $('nav.greedy-nav .hidden-links');
var numOfItems = 0;
var totalSpace = 0;
var closingTime = 1000;
var breakWidths = [];
// Get initial state
$vlinks.children().outerWidth(function(i, w) {
totalSpace += w;
numOfItems += 1;
breakWidths.push(totalSpace);
});
var availableSpace, numOfVisibleItems, requiredSpace, timer;
function check() {
// Get instant state
availableSpace = $vlinks.width() - 10;
numOfVisibleItems = $vlinks.children().length;
requiredSpace = breakWidths[numOfVisibleItems - 1];
// There is not enough space
if (requiredSpace > availableSpace) {
$vlinks.children().last().prependTo($hlinks);
numOfVisibleItems -= 1;
check();
// There is more than enough space
} else if (availableSpace > breakWidths[numOfVisibleItems]) {
$hlinks.children().first().appendTo($vlinks);
numOfVisibleItems += 1;
check();
}
// Update the button accordingly
$btn.attr("count", numOfItems - numOfVisibleItems);
if (numOfVisibleItems === numOfItems) {
$btn.addClass('hidden');
} else $btn.removeClass('hidden');
}
// Window listeners
$(window).resize(function() {
check();
});
$btn.on('click', function() {
$hlinks.toggleClass('hidden');
clearTimeout(timer);
});
$hlinks.on('mouseleave', function() {
// Mouse has left, start the timer
timer = setTimeout(function() {
$hlinks.addClass('hidden');
}, closingTime);
}).on('mouseenter', function() {
// Mouse is back, cancel the timer
clearTimeout(timer);
})
check();
});