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463 lines
13 KiB
463 lines
13 KiB
;(function ($, window, document, undefined) {
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'use strict';
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Foundation.libs.clearing = {
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name : 'clearing',
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version: '5.0.3',
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settings : {
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templates : {
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viewing : '<a href="#" class="clearing-close">×</a>' +
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'<div class="visible-img" style="display: none"><img src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" alt="" />' +
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'<p class="clearing-caption"></p><a href="#" class="clearing-main-prev"><span></span></a>' +
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'<a href="#" class="clearing-main-next"><span></span></a></div>'
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},
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// comma delimited list of selectors that, on click, will close clearing,
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// add 'div.clearing-blackout, div.visible-img' to close on background click
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close_selectors : '.clearing-close',
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// event initializers and locks
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init : false,
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locked : false
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},
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init : function (scope, method, options) {
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var self = this;
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Foundation.inherit(this, 'throttle loaded');
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this.bindings(method, options);
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if ($(this.scope).is('[data-clearing]')) {
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this.assemble($('li', this.scope));
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} else {
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$('[data-clearing]', this.scope).each(function () {
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self.assemble($('li', this));
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});
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}
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},
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events : function (scope) {
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var self = this;
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$(this.scope)
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.off('.clearing')
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.on('click.fndtn.clearing', 'ul[data-clearing] li',
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function (e, current, target) {
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var current = current || $(this),
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target = target || current,
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next = current.next('li'),
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settings = current.closest('[data-clearing]').data('clearing-init'),
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image = $(e.target);
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e.preventDefault();
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if (!settings) {
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self.init();
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settings = current.closest('[data-clearing]').data('clearing-init');
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}
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// if clearing is open and the current image is
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// clicked, go to the next image in sequence
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if (target.hasClass('visible') &&
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current[0] === target[0] &&
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next.length > 0 && self.is_open(current)) {
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target = next;
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image = $('img', target);
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}
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// set current and target to the clicked li if not otherwise defined.
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self.open(image, current, target);
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self.update_paddles(target);
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})
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.on('click.fndtn.clearing', '.clearing-main-next',
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function (e) { self.nav(e, 'next') })
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.on('click.fndtn.clearing', '.clearing-main-prev',
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function (e) { self.nav(e, 'prev') })
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.on('click.fndtn.clearing', this.settings.close_selectors,
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function (e) { Foundation.libs.clearing.close(e, this) })
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.on('keydown.fndtn.clearing',
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function (e) { self.keydown(e) });
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$(window).off('.clearing').on('resize.fndtn.clearing',
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function () { self.resize() });
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this.swipe_events(scope);
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},
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swipe_events : function (scope) {
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var self = this;
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$(this.scope)
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.on('touchstart.fndtn.clearing', '.visible-img', function(e) {
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if (!e.touches) { e = e.originalEvent; }
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var data = {
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start_page_x: e.touches[0].pageX,
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start_page_y: e.touches[0].pageY,
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start_time: (new Date()).getTime(),
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delta_x: 0,
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is_scrolling: undefined
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};
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$(this).data('swipe-transition', data);
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e.stopPropagation();
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})
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.on('touchmove.fndtn.clearing', '.visible-img', function(e) {
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if (!e.touches) { e = e.originalEvent; }
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// Ignore pinch/zoom events
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if(e.touches.length > 1 || e.scale && e.scale !== 1) return;
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var data = $(this).data('swipe-transition');
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if (typeof data === 'undefined') {
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data = {};
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}
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data.delta_x = e.touches[0].pageX - data.start_page_x;
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if ( typeof data.is_scrolling === 'undefined') {
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data.is_scrolling = !!( data.is_scrolling || Math.abs(data.delta_x) < Math.abs(e.touches[0].pageY - data.start_page_y) );
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}
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if (!data.is_scrolling && !data.active) {
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e.preventDefault();
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var direction = (data.delta_x < 0) ? 'next' : 'prev';
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data.active = true;
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self.nav(e, direction);
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}
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})
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.on('touchend.fndtn.clearing', '.visible-img', function(e) {
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$(this).data('swipe-transition', {});
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e.stopPropagation();
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});
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},
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assemble : function ($li) {
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var $el = $li.parent();
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if ($el.parent().hasClass('carousel')) return;
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$el.after('<div id="foundationClearingHolder"></div>');
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var holder = $('#foundationClearingHolder'),
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settings = $el.data('clearing-init'),
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grid = $el.detach(),
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data = {
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grid: '<div class="carousel">' + grid[0].outerHTML + '</div>',
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viewing: settings.templates.viewing
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},
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wrapper = '<div class="clearing-assembled"><div>' + data.viewing +
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data.grid + '</div></div>';
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return holder.after(wrapper).remove();
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},
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open : function ($image, current, target) {
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var root = target.closest('.clearing-assembled'),
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container = $('div', root).first(),
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visible_image = $('.visible-img', container),
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image = $('img', visible_image).not($image);
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if (!this.locked()) {
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// set the image to the selected thumbnail
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image
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.attr('src', this.load($image))
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.css('visibility', 'hidden');
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this.loaded(image, function () {
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image.css('visibility', 'visible');
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// toggle the gallery
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root.addClass('clearing-blackout');
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container.addClass('clearing-container');
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visible_image.show();
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this.fix_height(target)
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.caption($('.clearing-caption', visible_image), $image)
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.center(image)
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.shift(current, target, function () {
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target.siblings().removeClass('visible');
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target.addClass('visible');
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});
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}.bind(this));
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}
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},
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close : function (e, el) {
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e.preventDefault();
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var root = (function (target) {
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if (/blackout/.test(target.selector)) {
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return target;
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} else {
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return target.closest('.clearing-blackout');
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}
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}($(el))), container, visible_image;
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if (el === e.target && root) {
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container = $('div', root).first();
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visible_image = $('.visible-img', container);
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this.settings.prev_index = 0;
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$('ul[data-clearing]', root)
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.attr('style', '').closest('.clearing-blackout')
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.removeClass('clearing-blackout');
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container.removeClass('clearing-container');
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visible_image.hide();
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}
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return false;
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},
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is_open : function (current) {
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return current.parent().prop('style').length > 0;
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},
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keydown : function (e) {
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var clearing = $('ul[data-clearing]', '.clearing-blackout'),
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NEXT_KEY = this.rtl ? 37 : 39,
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PREV_KEY = this.rtl ? 39 : 37,
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ESC_KEY = 27;
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if (e.which === NEXT_KEY) this.go(clearing, 'next');
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if (e.which === PREV_KEY) this.go(clearing, 'prev');
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if (e.which === ESC_KEY) $('a.clearing-close').trigger('click');
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},
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nav : function (e, direction) {
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var clearing = $('ul[data-clearing]', '.clearing-blackout');
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e.preventDefault();
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this.go(clearing, direction);
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},
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resize : function () {
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var image = $('img', '.clearing-blackout .visible-img');
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if (image.length) {
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this.center(image);
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}
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},
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// visual adjustments
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fix_height : function (target) {
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var lis = target.parent().children(),
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self = this;
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lis.each(function () {
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var li = $(this),
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image = li.find('img');
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if (li.height() > image.outerHeight()) {
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li.addClass('fix-height');
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}
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})
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.closest('ul')
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.width(lis.length * 100 + '%');
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return this;
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},
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update_paddles : function (target) {
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var visible_image = target
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.closest('.carousel')
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.siblings('.visible-img');
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if (target.next().length > 0) {
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$('.clearing-main-next', visible_image)
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.removeClass('disabled');
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} else {
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$('.clearing-main-next', visible_image)
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.addClass('disabled');
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}
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if (target.prev().length > 0) {
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$('.clearing-main-prev', visible_image)
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.removeClass('disabled');
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} else {
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$('.clearing-main-prev', visible_image)
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.addClass('disabled');
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}
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},
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center : function (target) {
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if (!this.rtl) {
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target.css({
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marginLeft : -(target.outerWidth() / 2),
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marginTop : -(target.outerHeight() / 2)
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});
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} else {
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target.css({
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marginRight : -(target.outerWidth() / 2),
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marginTop : -(target.outerHeight() / 2),
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left: 'auto',
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right: '50%'
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});
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}
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return this;
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},
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// image loading and preloading
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load : function ($image) {
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if ($image[0].nodeName === "A") {
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var href = $image.attr('href');
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} else {
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var href = $image.parent().attr('href');
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}
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this.preload($image);
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if (href) return href;
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return $image.attr('src');
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},
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preload : function ($image) {
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this
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.img($image.closest('li').next())
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.img($image.closest('li').prev());
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},
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img : function (img) {
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if (img.length) {
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var new_img = new Image(),
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new_a = $('a', img);
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if (new_a.length) {
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new_img.src = new_a.attr('href');
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} else {
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new_img.src = $('img', img).attr('src');
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}
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}
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return this;
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},
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// image caption
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caption : function (container, $image) {
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var caption = $image.data('caption');
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if (caption) {
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container
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.html(caption)
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.show();
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} else {
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container
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.text('')
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.hide();
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}
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return this;
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},
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// directional methods
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go : function ($ul, direction) {
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var current = $('.visible', $ul),
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target = current[direction]();
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if (target.length) {
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$('img', target)
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.trigger('click', [current, target]);
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}
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},
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shift : function (current, target, callback) {
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var clearing = target.parent(),
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old_index = this.settings.prev_index || target.index(),
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direction = this.direction(clearing, current, target),
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dir = this.rtl ? 'right' : 'left',
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left = parseInt(clearing.css('left'), 10),
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width = target.outerWidth(),
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skip_shift;
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var dir_obj = {};
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// we use jQuery animate instead of CSS transitions because we
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// need a callback to unlock the next animation
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// needs support for RTL **
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if (target.index() !== old_index && !/skip/.test(direction)){
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if (/left/.test(direction)) {
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this.lock();
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dir_obj[dir] = left + width;
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clearing.animate(dir_obj, 300, this.unlock());
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} else if (/right/.test(direction)) {
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this.lock();
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dir_obj[dir] = left - width;
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clearing.animate(dir_obj, 300, this.unlock());
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}
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} else if (/skip/.test(direction)) {
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// the target image is not adjacent to the current image, so
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// do we scroll right or not
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skip_shift = target.index() - this.settings.up_count;
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this.lock();
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if (skip_shift > 0) {
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dir_obj[dir] = -(skip_shift * width);
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clearing.animate(dir_obj, 300, this.unlock());
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} else {
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dir_obj[dir] = 0;
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clearing.animate(dir_obj, 300, this.unlock());
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}
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}
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callback();
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},
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direction : function ($el, current, target) {
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var lis = $('li', $el),
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li_width = lis.outerWidth() + (lis.outerWidth() / 4),
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up_count = Math.floor($('.clearing-container').outerWidth() / li_width) - 1,
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target_index = lis.index(target),
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response;
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this.settings.up_count = up_count;
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if (this.adjacent(this.settings.prev_index, target_index)) {
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if ((target_index > up_count)
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&& target_index > this.settings.prev_index) {
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response = 'right';
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} else if ((target_index > up_count - 1)
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&& target_index <= this.settings.prev_index) {
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response = 'left';
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} else {
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response = false;
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}
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} else {
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response = 'skip';
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}
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this.settings.prev_index = target_index;
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return response;
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},
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adjacent : function (current_index, target_index) {
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for (var i = target_index + 1; i >= target_index - 1; i--) {
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if (i === current_index) return true;
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}
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return false;
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},
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// lock management
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lock : function () {
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this.settings.locked = true;
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},
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unlock : function () {
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this.settings.locked = false;
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},
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locked : function () {
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return this.settings.locked;
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},
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off : function () {
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$(this.scope).off('.fndtn.clearing');
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$(window).off('.fndtn.clearing');
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},
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reflow : function () {
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this.init();
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}
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};
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}(jQuery, this, this.document));
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