sp-codes.de/bower_components/foundation-sites/js/foundation.responsiveMenu.js

149 lines
4 KiB
JavaScript
Raw Normal View History

2016-10-28 17:33:25 +00:00
'use strict';
!function($) {
/**
* ResponsiveMenu module.
* @module foundation.responsiveMenu
* @requires foundation.util.triggers
* @requires foundation.util.mediaQuery
* @requires foundation.util.accordionMenu
* @requires foundation.util.drilldown
* @requires foundation.util.dropdown-menu
*/
class ResponsiveMenu {
/**
* Creates a new instance of a responsive menu.
* @class
* @fires ResponsiveMenu#init
* @param {jQuery} element - jQuery object to make into a dropdown menu.
* @param {Object} options - Overrides to the default plugin settings.
*/
constructor(element, options) {
this.$element = $(element);
this.rules = this.$element.data('responsive-menu');
this.currentMq = null;
this.currentPlugin = null;
this._init();
this._events();
Foundation.registerPlugin(this, 'ResponsiveMenu');
}
/**
* Initializes the Menu by parsing the classes from the 'data-ResponsiveMenu' attribute on the element.
* @function
* @private
*/
_init() {
// The first time an Interchange plugin is initialized, this.rules is converted from a string of "classes" to an object of rules
if (typeof this.rules === 'string') {
let rulesTree = {};
// Parse rules from "classes" pulled from data attribute
let rules = this.rules.split(' ');
// Iterate through every rule found
for (let i = 0; i < rules.length; i++) {
let rule = rules[i].split('-');
let ruleSize = rule.length > 1 ? rule[0] : 'small';
let rulePlugin = rule.length > 1 ? rule[1] : rule[0];
if (MenuPlugins[rulePlugin] !== null) {
rulesTree[ruleSize] = MenuPlugins[rulePlugin];
}
}
this.rules = rulesTree;
}
if (!$.isEmptyObject(this.rules)) {
this._checkMediaQueries();
}
}
/**
* Initializes events for the Menu.
* @function
* @private
*/
_events() {
var _this = this;
$(window).on('changed.zf.mediaquery', function() {
_this._checkMediaQueries();
});
// $(window).on('resize.zf.ResponsiveMenu', function() {
// _this._checkMediaQueries();
// });
}
/**
* Checks the current screen width against available media queries. If the media query has changed, and the plugin needed has changed, the plugins will swap out.
* @function
* @private
*/
_checkMediaQueries() {
var matchedMq, _this = this;
// Iterate through each rule and find the last matching rule
$.each(this.rules, function(key) {
if (Foundation.MediaQuery.atLeast(key)) {
matchedMq = key;
}
});
// No match? No dice
if (!matchedMq) return;
// Plugin already initialized? We good
if (this.currentPlugin instanceof this.rules[matchedMq].plugin) return;
// Remove existing plugin-specific CSS classes
$.each(MenuPlugins, function(key, value) {
_this.$element.removeClass(value.cssClass);
});
// Add the CSS class for the new plugin
this.$element.addClass(this.rules[matchedMq].cssClass);
// Create an instance of the new plugin
if (this.currentPlugin) this.currentPlugin.destroy();
this.currentPlugin = new this.rules[matchedMq].plugin(this.$element, {});
}
/**
* Destroys the instance of the current plugin on this element, as well as the window resize handler that switches the plugins out.
* @function
*/
destroy() {
this.currentPlugin.destroy();
$(window).off('.zf.ResponsiveMenu');
Foundation.unregisterPlugin(this);
}
}
ResponsiveMenu.defaults = {};
// The plugin matches the plugin classes with these plugin instances.
var MenuPlugins = {
dropdown: {
cssClass: 'dropdown',
plugin: Foundation._plugins['dropdown-menu'] || null
},
drilldown: {
cssClass: 'drilldown',
plugin: Foundation._plugins['drilldown'] || null
},
accordion: {
cssClass: 'accordion-menu',
plugin: Foundation._plugins['accordion-menu'] || null
}
};
// Window exports
Foundation.plugin(ResponsiveMenu, 'ResponsiveMenu');
}(jQuery);