407 lines
11 KiB
JavaScript
407 lines
11 KiB
JavaScript
/**
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* Navigation Plugin
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* @version 2.3.4
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* @author Artus Kolanowski
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* @author David Deutsch
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* @license The MIT License (MIT)
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*/
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;(function($, window, document, undefined) {
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'use strict';
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/**
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* Creates the navigation plugin.
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* @class The Navigation Plugin
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* @param {Owl} carousel - The Owl Carousel.
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*/
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var Navigation = function(carousel) {
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/**
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* Reference to the core.
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* @protected
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* @type {Owl}
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*/
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this._core = carousel;
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/**
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* Indicates whether the plugin is initialized or not.
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* @protected
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* @type {Boolean}
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*/
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this._initialized = false;
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/**
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* The current paging indexes.
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* @protected
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* @type {Array}
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*/
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this._pages = [];
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/**
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* All DOM elements of the user interface.
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* @protected
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* @type {Object}
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*/
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this._controls = {};
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/**
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* Markup for an indicator.
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* @protected
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* @type {Array.<String>}
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*/
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this._templates = [];
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/**
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* The carousel element.
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* @type {jQuery}
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*/
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this.$element = this._core.$element;
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/**
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* Overridden methods of the carousel.
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* @protected
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* @type {Object}
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*/
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this._overrides = {
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next: this._core.next,
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prev: this._core.prev,
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to: this._core.to
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};
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/**
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* All event handlers.
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* @protected
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* @type {Object}
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*/
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this._handlers = {
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'prepared.owl.carousel': $.proxy(function(e) {
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if (e.namespace && this._core.settings.dotsData) {
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this._templates.push('<div class="' + this._core.settings.dotClass + '">' +
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$(e.content).find('[data-dot]').addBack('[data-dot]').attr('data-dot') + '</div>');
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}
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}, this),
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'added.owl.carousel': $.proxy(function(e) {
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if (e.namespace && this._core.settings.dotsData) {
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this._templates.splice(e.position, 0, this._templates.pop());
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}
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}, this),
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'remove.owl.carousel': $.proxy(function(e) {
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if (e.namespace && this._core.settings.dotsData) {
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this._templates.splice(e.position, 1);
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}
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}, this),
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'changed.owl.carousel': $.proxy(function(e) {
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if (e.namespace && e.property.name == 'position') {
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this.draw();
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}
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}, this),
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'initialized.owl.carousel': $.proxy(function(e) {
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if (e.namespace && !this._initialized) {
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this._core.trigger('initialize', null, 'navigation');
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this.initialize();
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this.update();
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this.draw();
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this._initialized = true;
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this._core.trigger('initialized', null, 'navigation');
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}
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}, this),
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'refreshed.owl.carousel': $.proxy(function(e) {
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if (e.namespace && this._initialized) {
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this._core.trigger('refresh', null, 'navigation');
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this.update();
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this.draw();
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this._core.trigger('refreshed', null, 'navigation');
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}
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}, this)
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};
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// set default options
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this._core.options = $.extend({}, Navigation.Defaults, this._core.options);
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// register event handlers
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this.$element.on(this._handlers);
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};
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/**
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* Default options.
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* @public
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* @todo Rename `slideBy` to `navBy`
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*/
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Navigation.Defaults = {
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nav: false,
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navText: [
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'<span aria-label="' + 'Previous' + '">‹</span>',
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'<span aria-label="' + 'Next' + '">›</span>'
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],
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navSpeed: false,
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navElement: 'button type="button" role="presentation"',
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navContainer: false,
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navContainerClass: 'owl-nav',
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navClass: [
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'owl-prev',
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'owl-next'
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],
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slideBy: 1,
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dotClass: 'owl-dot',
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dotsClass: 'owl-dots',
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dots: true,
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dotsEach: false,
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dotsData: false,
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dotsSpeed: false,
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dotsContainer: false
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};
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/**
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* Initializes the layout of the plugin and extends the carousel.
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* @protected
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*/
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Navigation.prototype.initialize = function() {
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var override,
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settings = this._core.settings;
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// create DOM structure for relative navigation
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this._controls.$relative = (settings.navContainer ? $(settings.navContainer)
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: $('<div>').addClass(settings.navContainerClass).appendTo(this.$element)).addClass('disabled');
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this._controls.$previous = $('<' + settings.navElement + '>')
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.addClass(settings.navClass[0])
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.html(settings.navText[0])
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.prependTo(this._controls.$relative)
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.on('click', $.proxy(function(e) {
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this.prev(settings.navSpeed);
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}, this));
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this._controls.$next = $('<' + settings.navElement + '>')
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.addClass(settings.navClass[1])
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.html(settings.navText[1])
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.appendTo(this._controls.$relative)
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.on('click', $.proxy(function(e) {
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this.next(settings.navSpeed);
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}, this));
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// create DOM structure for absolute navigation
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if (!settings.dotsData) {
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this._templates = [ $('<button role="button">')
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.addClass(settings.dotClass)
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.append($('<span>'))
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.prop('outerHTML') ];
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}
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this._controls.$absolute = (settings.dotsContainer ? $(settings.dotsContainer)
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: $('<div>').addClass(settings.dotsClass).appendTo(this.$element)).addClass('disabled');
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this._controls.$absolute.on('click', 'button', $.proxy(function(e) {
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var index = $(e.target).parent().is(this._controls.$absolute)
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? $(e.target).index() : $(e.target).parent().index();
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e.preventDefault();
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this.to(index, settings.dotsSpeed);
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}, this));
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/*$el.on('focusin', function() {
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$(document).off(".carousel");
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$(document).on('keydown.carousel', function(e) {
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if(e.keyCode == 37) {
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$el.trigger('prev.owl')
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}
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if(e.keyCode == 39) {
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$el.trigger('next.owl')
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}
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});
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});*/
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// override public methods of the carousel
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for (override in this._overrides) {
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this._core[override] = $.proxy(this[override], this);
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}
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};
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/**
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* Destroys the plugin.
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* @protected
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*/
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Navigation.prototype.destroy = function() {
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var handler, control, property, override, settings;
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settings = this._core.settings;
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for (handler in this._handlers) {
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this.$element.off(handler, this._handlers[handler]);
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}
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for (control in this._controls) {
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if (control === '$relative' && settings.navContainer) {
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this._controls[control].html('');
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} else {
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this._controls[control].remove();
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}
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}
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for (override in this.overides) {
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this._core[override] = this._overrides[override];
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}
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for (property in Object.getOwnPropertyNames(this)) {
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typeof this[property] != 'function' && (this[property] = null);
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}
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};
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/**
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* Updates the internal state.
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* @protected
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*/
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Navigation.prototype.update = function() {
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var i, j, k,
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lower = this._core.clones().length / 2,
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upper = lower + this._core.items().length,
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maximum = this._core.maximum(true),
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settings = this._core.settings,
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size = settings.center || settings.autoWidth || settings.dotsData
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? 1 : settings.dotsEach || settings.items;
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if (settings.slideBy !== 'page') {
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settings.slideBy = Math.min(settings.slideBy, settings.items);
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}
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if (settings.dots || settings.slideBy == 'page') {
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this._pages = [];
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for (i = lower, j = 0, k = 0; i < upper; i++) {
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if (j >= size || j === 0) {
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this._pages.push({
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start: Math.min(maximum, i - lower),
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end: i - lower + size - 1
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});
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if (Math.min(maximum, i - lower) === maximum) {
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break;
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}
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j = 0, ++k;
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}
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j += this._core.mergers(this._core.relative(i));
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}
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}
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};
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/**
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* Draws the user interface.
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* @todo The option `dotsData` wont work.
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* @protected
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*/
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Navigation.prototype.draw = function() {
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var difference,
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settings = this._core.settings,
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disabled = this._core.items().length <= settings.items,
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index = this._core.relative(this._core.current()),
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loop = settings.loop || settings.rewind;
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this._controls.$relative.toggleClass('disabled', !settings.nav || disabled);
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if (settings.nav) {
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this._controls.$previous.toggleClass('disabled', !loop && index <= this._core.minimum(true));
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this._controls.$next.toggleClass('disabled', !loop && index >= this._core.maximum(true));
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}
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this._controls.$absolute.toggleClass('disabled', !settings.dots || disabled);
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if (settings.dots) {
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difference = this._pages.length - this._controls.$absolute.children().length;
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if (settings.dotsData && difference !== 0) {
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this._controls.$absolute.html(this._templates.join(''));
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} else if (difference > 0) {
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this._controls.$absolute.append(new Array(difference + 1).join(this._templates[0]));
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} else if (difference < 0) {
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this._controls.$absolute.children().slice(difference).remove();
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}
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this._controls.$absolute.find('.active').removeClass('active');
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this._controls.$absolute.children().eq($.inArray(this.current(), this._pages)).addClass('active');
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}
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};
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/**
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* Extends event data.
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* @protected
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* @param {Event} event - The event object which gets thrown.
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*/
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Navigation.prototype.onTrigger = function(event) {
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var settings = this._core.settings;
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event.page = {
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index: $.inArray(this.current(), this._pages),
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count: this._pages.length,
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size: settings && (settings.center || settings.autoWidth || settings.dotsData
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? 1 : settings.dotsEach || settings.items)
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};
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};
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/**
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* Gets the current page position of the carousel.
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* @protected
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* @returns {Number}
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*/
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Navigation.prototype.current = function() {
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var current = this._core.relative(this._core.current());
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return $.grep(this._pages, $.proxy(function(page, index) {
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return page.start <= current && page.end >= current;
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}, this)).pop();
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};
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/**
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* Gets the current succesor/predecessor position.
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* @protected
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* @returns {Number}
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*/
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Navigation.prototype.getPosition = function(successor) {
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var position, length,
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settings = this._core.settings;
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if (settings.slideBy == 'page') {
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position = $.inArray(this.current(), this._pages);
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length = this._pages.length;
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successor ? ++position : --position;
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position = this._pages[((position % length) + length) % length].start;
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} else {
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position = this._core.relative(this._core.current());
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length = this._core.items().length;
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successor ? position += settings.slideBy : position -= settings.slideBy;
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}
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return position;
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};
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/**
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* Slides to the next item or page.
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* @public
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* @param {Number} [speed=false] - The time in milliseconds for the transition.
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*/
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Navigation.prototype.next = function(speed) {
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$.proxy(this._overrides.to, this._core)(this.getPosition(true), speed);
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};
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/**
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* Slides to the previous item or page.
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* @public
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* @param {Number} [speed=false] - The time in milliseconds for the transition.
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*/
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Navigation.prototype.prev = function(speed) {
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$.proxy(this._overrides.to, this._core)(this.getPosition(false), speed);
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};
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/**
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* Slides to the specified item or page.
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* @public
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* @param {Number} position - The position of the item or page.
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* @param {Number} [speed] - The time in milliseconds for the transition.
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* @param {Boolean} [standard=false] - Whether to use the standard behaviour or not.
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*/
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Navigation.prototype.to = function(position, speed, standard) {
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var length;
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if (!standard && this._pages.length) {
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length = this._pages.length;
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$.proxy(this._overrides.to, this._core)(this._pages[((position % length) + length) % length].start, speed);
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} else {
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$.proxy(this._overrides.to, this._core)(position, speed);
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}
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};
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$.fn.owlCarousel.Constructor.Plugins.Navigation = Navigation;
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})(window.Zepto || window.jQuery, window, document);
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