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File: web/assets/plugins/hover-dropdown.js

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File: web/assets/plugins/hover-dropdown.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: PHP Web Socket Chat
Chat system using Websockets or AJAX requests
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Date: 7 years ago
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/* * Project: Twitter Bootstrap Hover Dropdown * Author: Cameron Spear * Contributors: Mattia Larentis * * Dependencies?: Twitter Bootstrap's Dropdown plugin * * A simple plugin to enable twitter bootstrap dropdowns to active on hover and provide a nice user experience. * * No license, do what you want. I'd love credit or a shoutout, though. * * http://cameronspear.com/blog/twitter-bootstrap-dropdown-on-hover-plugin/ */ ;(function($, window, undefined) { // outside the scope of the jQuery plugin to // keep track of all dropdowns var $allDropdowns = $(); // if instantlyCloseOthers is true, then it will instantly // shut other nav items when a new one is hovered over $.fn.dropdownHover = function(options) { // the element we really care about // is the dropdown-toggle's parent $allDropdowns = $allDropdowns.add(this.parent()); return this.each(function() { var $this = $(this), $parent = $this.parent(), defaults = { delay: 500, instantlyCloseOthers: true }, data = { delay: $(this).data('delay'), instantlyCloseOthers: $(this).data('close-others') }, settings = $.extend(true, {}, defaults, options, data), timeout; $parent.hover(function(event) { // so a neighbor can't open the dropdown if(!$parent.hasClass('open') && !$this.is(event.target)) { return true; } if(shouldHover) { if(settings.instantlyCloseOthers === true) $allDropdowns.removeClass('open'); window.clearTimeout(timeout); $parent.addClass('open'); } }, function() { if(shouldHover) { timeout = window.setTimeout(function() { $parent.removeClass('open'); }, settings.delay); } }); // this helps with button groups! $this.hover(function() { if(shouldHover) { if(settings.instantlyCloseOthers === true) $allDropdowns.removeClass('open'); window.clearTimeout(timeout); $parent.addClass('open'); } }); // handle submenus $parent.find('.dropdown-submenu').each(function(){ var $this = $(this); var subTimeout; $this.hover(function() { if(shouldHover) { window.clearTimeout(subTimeout); $this.children('.dropdown-menu').show(); // always close submenu siblings instantly $this.siblings().children('.dropdown-menu').hide(); } }, function() { var $submenu = $this.children('.dropdown-menu'); if(shouldHover) { subTimeout = window.setTimeout(function() { $submenu.hide(); }, settings.delay); } else { // emulate Twitter Bootstrap's default behavior $submenu.hide(); } }); }); }); }; // helper variables to guess if they are using a mouse var shouldHover = false, mouse_info = { hits: 0, x: null, y: null }; $(document).ready(function() { // apply dropdownHover to all elements with the data-hover="dropdown" attribute $('[data-hover="dropdown"]').dropdownHover(); // if the mouse movements are "smooth" or there are more than 20, they probably have a real mouse $(document).mousemove(function(e){ mouse_info.hits++; if (mouse_info.hits > 20 || (Math.abs(e.pageX - mouse_info.x) + Math.abs(e.pageY - mouse_info.y)) < 4) { $(this).unbind(e); shouldHover = true; } else { mouse_info.x = e.pageX; mouse_info.y = e.pageY; } }); }); // for the submenu to close on delay, we need to override Bootstrap's CSS in this case var css = '.dropdown-submenu:hover>.dropdown-menu{display:none}'; var style = document.createElement('style'); style.type = 'text/css'; if (style.styleSheet) { style.styleSheet.cssText = css; } else { style.appendChild(document.createTextNode(css)); } $('head')[0].appendChild(style); })(jQuery, this);