/
foundation.es6.js
11069 lines (9798 loc) · 328 KB
/
foundation.es6.js
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import $ from 'jquery';
// Core Foundation Utilities, utilized in a number of places.
/**
* Returns a boolean for RTL support
*/
function rtl() {
return $('html').attr('dir') === 'rtl';
}
/**
* returns a random base-36 uid with namespacing
* @function
* @param {Number} length - number of random base-36 digits desired. Increase for more random strings.
* @param {String} namespace - name of plugin to be incorporated in uid, optional.
* @default {String} '' - if no plugin name is provided, nothing is appended to the uid.
* @returns {String} - unique id
*/
function GetYoDigits(length = 6, namespace){
let str = '';
const chars = '0123456789abcdefghijklmnopqrstuvwxyz';
const charsLength = chars.length;
for (let i = 0; i < length; i++) {
str += chars[Math.floor(Math.random() * charsLength)];
}
return namespace ? `${str}-${namespace}` : str;
}
/**
* Escape a string so it can be used as a regexp pattern
* @function
* @see https://stackoverflow.com/a/9310752/4317384
*
* @param {String} str - string to escape.
* @returns {String} - escaped string
*/
function RegExpEscape(str){
return str.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
}
function transitionend($elem){
var transitions = {
'transition': 'transitionend',
'WebkitTransition': 'webkitTransitionEnd',
'MozTransition': 'transitionend',
'OTransition': 'otransitionend'
};
var elem = document.createElement('div'),
end;
for (let transition in transitions){
if (typeof elem.style[transition] !== 'undefined'){
end = transitions[transition];
}
}
if (end) {
return end;
} else {
setTimeout(function(){
$elem.triggerHandler('transitionend', [$elem]);
}, 1);
return 'transitionend';
}
}
/**
* Return an event type to listen for window load.
*
* If `$elem` is passed, an event will be triggered on `$elem`. If window is already loaded, the event will still be triggered.
* If `handler` is passed, attach it to the event on `$elem`.
* Calling `onLoad` without handler allows you to get the event type that will be triggered before attaching the handler by yourself.
* @function
*
* @param {Object} [] $elem - jQuery element on which the event will be triggered if passed.
* @param {Function} [] handler - function to attach to the event.
* @returns {String} - event type that should or will be triggered.
*/
function onLoad($elem, handler) {
const didLoad = document.readyState === 'complete';
const eventType = (didLoad ? '_didLoad' : 'load') + '.zf.util.onLoad';
const cb = () => $elem.triggerHandler(eventType);
if ($elem) {
if (handler) $elem.one(eventType, handler);
if (didLoad)
setTimeout(cb);
else
$(window).one('load', cb);
}
return eventType;
}
/**
* Retuns an handler for the `mouseleave` that ignore disappeared mouses.
*
* If the mouse "disappeared" from the document (like when going on a browser UI element, See https://git.io/zf-11410),
* the event is ignored.
* - If the `ignoreLeaveWindow` is `true`, the event is ignored when the user actually left the window
* (like by switching to an other window with [Alt]+[Tab]).
* - If the `ignoreReappear` is `true`, the event will be ignored when the mouse will reappear later on the document
* outside of the element it left.
*
* @function
*
* @param {Function} [] handler - handler for the filtered `mouseleave` event to watch.
* @param {Object} [] options - object of options:
* - {Boolean} [false] ignoreLeaveWindow - also ignore when the user switched windows.
* - {Boolean} [false] ignoreReappear - also ignore when the mouse reappeared outside of the element it left.
* @returns {Function} - filtered handler to use to listen on the `mouseleave` event.
*/
function ignoreMousedisappear(handler, { ignoreLeaveWindow = false, ignoreReappear = false } = {}) {
return function leaveEventHandler(eLeave, ...rest) {
const callback = handler.bind(this, eLeave, ...rest);
// The mouse left: call the given callback if the mouse entered elsewhere
if (eLeave.relatedTarget !== null) {
return callback();
}
// Otherwise, check if the mouse actually left the window.
// In firefox if the user switched between windows, the window sill have the focus by the time
// the event is triggered. We have to debounce the event to test this case.
setTimeout(function leaveEventDebouncer() {
if (!ignoreLeaveWindow && document.hasFocus && !document.hasFocus()) {
return callback();
}
// Otherwise, wait for the mouse to reeapear outside of the element,
if (!ignoreReappear) {
$(document).one('mouseenter', function reenterEventHandler(eReenter) {
if (!$(eLeave.currentTarget).has(eReenter.target).length) {
// Fill where the mouse finally entered.
eLeave.relatedTarget = eReenter.target;
callback();
}
});
}
}, 0);
};
}
var foundation_core_utils = /*#__PURE__*/Object.freeze({
__proto__: null,
rtl: rtl,
GetYoDigits: GetYoDigits,
RegExpEscape: RegExpEscape,
transitionend: transitionend,
onLoad: onLoad,
ignoreMousedisappear: ignoreMousedisappear
});
// matchMedia() polyfill - Test a CSS media type/query in JS.
// Authors & copyright © 2012: Scott Jehl, Paul Irish, Nicholas Zakas, David Knight. MIT license
/* eslint-disable */
window.matchMedia || (window.matchMedia = (function () {
// For browsers that support matchMedium api such as IE 9 and webkit
var styleMedia = (window.styleMedia || window.media);
// For those that don't support matchMedium
if (!styleMedia) {
var style = document.createElement('style'),
script = document.getElementsByTagName('script')[0],
info = null;
style.type = 'text/css';
style.id = 'matchmediajs-test';
if (!script) {
document.head.appendChild(style);
} else {
script.parentNode.insertBefore(style, script);
}
// 'style.currentStyle' is used by IE <= 8 and 'window.getComputedStyle' for all other browsers
info = ('getComputedStyle' in window) && window.getComputedStyle(style, null) || style.currentStyle;
styleMedia = {
matchMedium: function (media) {
var text = '@media ' + media + '{ #matchmediajs-test { width: 1px; } }';
// 'style.styleSheet' is used by IE <= 8 and 'style.textContent' for all other browsers
if (style.styleSheet) {
style.styleSheet.cssText = text;
} else {
style.textContent = text;
}
// Test if media query is true or false
return info.width === '1px';
}
};
}
return function(media) {
return {
matches: styleMedia.matchMedium(media || 'all'),
media: media || 'all'
};
};
})());
/* eslint-enable */
var MediaQuery = {
queries: [],
current: '',
/**
* Initializes the media query helper, by extracting the breakpoint list from the CSS and activating the breakpoint watcher.
* @function
* @private
*/
_init() {
// make sure the initialization is only done once when calling _init() several times
if (this.isInitialized === true) {
return;
} else {
this.isInitialized = true;
}
var self = this;
var $meta = $('meta.foundation-mq');
if(!$meta.length){
$('<meta class="foundation-mq" name="foundation-mq" content>').appendTo(document.head);
}
var extractedStyles = $('.foundation-mq').css('font-family');
var namedQueries;
namedQueries = parseStyleToObject(extractedStyles);
self.queries = []; // reset
for (var key in namedQueries) {
if(namedQueries.hasOwnProperty(key)) {
self.queries.push({
name: key,
value: `only screen and (min-width: ${namedQueries[key]})`
});
}
}
this.current = this._getCurrentSize();
this._watcher();
},
/**
* Reinitializes the media query helper.
* Useful if your CSS breakpoint configuration has just been loaded or has changed since the initialization.
* @function
* @private
*/
_reInit() {
this.isInitialized = false;
this._init();
},
/**
* Checks if the screen is at least as wide as a breakpoint.
* @function
* @param {String} size - Name of the breakpoint to check.
* @returns {Boolean} `true` if the breakpoint matches, `false` if it's smaller.
*/
atLeast(size) {
var query = this.get(size);
if (query) {
return window.matchMedia(query).matches;
}
return false;
},
/**
* Checks if the screen is within the given breakpoint.
* If smaller than the breakpoint of larger than its upper limit it returns false.
* @function
* @param {String} size - Name of the breakpoint to check.
* @returns {Boolean} `true` if the breakpoint matches, `false` otherwise.
*/
only(size) {
return size === this._getCurrentSize();
},
/**
* Checks if the screen is within a breakpoint or smaller.
* @function
* @param {String} size - Name of the breakpoint to check.
* @returns {Boolean} `true` if the breakpoint matches, `false` if it's larger.
*/
upTo(size) {
const nextSize = this.next(size);
// If the next breakpoint does not match, the screen is smaller than
// the upper limit of this breakpoint.
if (nextSize) {
return !this.atLeast(nextSize);
}
// If there is no next breakpoint, the "size" breakpoint does not have
// an upper limit and the screen will always be within it or smaller.
return true;
},
/**
* Checks if the screen matches to a breakpoint.
* @function
* @param {String} size - Name of the breakpoint to check, either 'small only' or 'small'. Omitting 'only' falls back to using atLeast() method.
* @returns {Boolean} `true` if the breakpoint matches, `false` if it does not.
*/
is(size) {
const parts = size.trim().split(' ').filter(p => !!p.length);
const [bpSize, bpModifier = ''] = parts;
// Only the breakpont
if (bpModifier === 'only') {
return this.only(bpSize);
}
// At least the breakpoint (included)
if (!bpModifier || bpModifier === 'up') {
return this.atLeast(bpSize);
}
// Up to the breakpoint (included)
if (bpModifier === 'down') {
return this.upTo(bpSize);
}
throw new Error(`
Invalid breakpoint passed to MediaQuery.is().
Expected a breakpoint name formatted like "<size> <modifier>", got "${size}".
`);
},
/**
* Gets the media query of a breakpoint.
* @function
* @param {String} size - Name of the breakpoint to get.
* @returns {String|null} - The media query of the breakpoint, or `null` if the breakpoint doesn't exist.
*/
get(size) {
for (var i in this.queries) {
if(this.queries.hasOwnProperty(i)) {
var query = this.queries[i];
if (size === query.name) return query.value;
}
}
return null;
},
/**
* Get the breakpoint following the given breakpoint.
* @function
* @param {String} size - Name of the breakpoint.
* @returns {String|null} - The name of the following breakpoint, or `null` if the passed breakpoint was the last one.
*/
next(size) {
const queryIndex = this.queries.findIndex((q) => this._getQueryName(q) === size);
if (queryIndex === -1) {
throw new Error(`
Unknown breakpoint "${size}" passed to MediaQuery.next().
Ensure it is present in your Sass "$breakpoints" setting.
`);
}
const nextQuery = this.queries[queryIndex + 1];
return nextQuery ? nextQuery.name : null;
},
/**
* Returns the name of the breakpoint related to the given value.
* @function
* @private
* @param {String|Object} value - Breakpoint name or query object.
* @returns {String} Name of the breakpoint.
*/
_getQueryName(value) {
if (typeof value === 'string')
return value;
if (typeof value === 'object')
return value.name;
throw new TypeError(`
Invalid value passed to MediaQuery._getQueryName().
Expected a breakpoint name (String) or a breakpoint query (Object), got "${value}" (${typeof value})
`);
},
/**
* Gets the current breakpoint name by testing every breakpoint and returning the last one to match (the biggest one).
* @function
* @private
* @returns {String} Name of the current breakpoint.
*/
_getCurrentSize() {
var matched;
for (var i = 0; i < this.queries.length; i++) {
var query = this.queries[i];
if (window.matchMedia(query.value).matches) {
matched = query;
}
}
return matched && this._getQueryName(matched);
},
/**
* Activates the breakpoint watcher, which fires an event on the window whenever the breakpoint changes.
* @function
* @private
*/
_watcher() {
$(window).off('resize.zf.mediaquery').on('resize.zf.mediaquery', () => {
var newSize = this._getCurrentSize(), currentSize = this.current;
if (newSize !== currentSize) {
// Change the current media query
this.current = newSize;
// Broadcast the media query change on the window
$(window).trigger('changed.zf.mediaquery', [newSize, currentSize]);
}
});
}
};
// Thank you: https://github.com/sindresorhus/query-string
function parseStyleToObject(str) {
var styleObject = {};
if (typeof str !== 'string') {
return styleObject;
}
str = str.trim().slice(1, -1); // browsers re-quote string style values
if (!str) {
return styleObject;
}
styleObject = str.split('&').reduce(function(ret, param) {
var parts = param.replace(/\+/g, ' ').split('=');
var key = parts[0];
var val = parts[1];
key = decodeURIComponent(key);
// missing `=` should be `null`:
// http://w3.org/TR/2012/WD-url-20120524/#collect-url-parameters
val = typeof val === 'undefined' ? null : decodeURIComponent(val);
if (!ret.hasOwnProperty(key)) {
ret[key] = val;
} else if (Array.isArray(ret[key])) {
ret[key].push(val);
} else {
ret[key] = [ret[key], val];
}
return ret;
}, {});
return styleObject;
}
var FOUNDATION_VERSION = '6.7.2';
// Global Foundation object
// This is attached to the window, or used as a module for AMD/Browserify
var Foundation = {
version: FOUNDATION_VERSION,
/**
* Stores initialized plugins.
*/
_plugins: {},
/**
* Stores generated unique ids for plugin instances
*/
_uuids: [],
/**
* Defines a Foundation plugin, adding it to the `Foundation` namespace and the list of plugins to initialize when reflowing.
* @param {Object} plugin - The constructor of the plugin.
*/
plugin: function(plugin, name) {
// Object key to use when adding to global Foundation object
// Examples: Foundation.Reveal, Foundation.OffCanvas
var className = (name || functionName(plugin));
// Object key to use when storing the plugin, also used to create the identifying data attribute for the plugin
// Examples: data-reveal, data-off-canvas
var attrName = hyphenate(className);
// Add to the Foundation object and the plugins list (for reflowing)
this._plugins[attrName] = this[className] = plugin;
},
/**
* @function
* Populates the _uuids array with pointers to each individual plugin instance.
* Adds the `zfPlugin` data-attribute to programmatically created plugins to allow use of $(selector).foundation(method) calls.
* Also fires the initialization event for each plugin, consolidating repetitive code.
* @param {Object} plugin - an instance of a plugin, usually `this` in context.
* @param {String} name - the name of the plugin, passed as a camelCased string.
* @fires Plugin#init
*/
registerPlugin: function(plugin, name){
var pluginName = name ? hyphenate(name) : functionName(plugin.constructor).toLowerCase();
plugin.uuid = GetYoDigits(6, pluginName);
if(!plugin.$element.attr(`data-${pluginName}`)){ plugin.$element.attr(`data-${pluginName}`, plugin.uuid); }
if(!plugin.$element.data('zfPlugin')){ plugin.$element.data('zfPlugin', plugin); }
/**
* Fires when the plugin has initialized.
* @event Plugin#init
*/
plugin.$element.trigger(`init.zf.${pluginName}`);
this._uuids.push(plugin.uuid);
return;
},
/**
* @function
* Removes the plugins uuid from the _uuids array.
* Removes the zfPlugin data attribute, as well as the data-plugin-name attribute.
* Also fires the destroyed event for the plugin, consolidating repetitive code.
* @param {Object} plugin - an instance of a plugin, usually `this` in context.
* @fires Plugin#destroyed
*/
unregisterPlugin: function(plugin){
var pluginName = hyphenate(functionName(plugin.$element.data('zfPlugin').constructor));
this._uuids.splice(this._uuids.indexOf(plugin.uuid), 1);
plugin.$element.removeAttr(`data-${pluginName}`).removeData('zfPlugin')
/**
* Fires when the plugin has been destroyed.
* @event Plugin#destroyed
*/
.trigger(`destroyed.zf.${pluginName}`);
for(var prop in plugin){
plugin[prop] = null;//clean up script to prep for garbage collection.
}
return;
},
/**
* @function
* Causes one or more active plugins to re-initialize, resetting event listeners, recalculating positions, etc.
* @param {String} plugins - optional string of an individual plugin key, attained by calling `$(element).data('pluginName')`, or string of a plugin class i.e. `'dropdown'`
* @default If no argument is passed, reflow all currently active plugins.
*/
reInit: function(plugins){
var isJQ = plugins instanceof $;
try{
if(isJQ){
plugins.each(function(){
$(this).data('zfPlugin')._init();
});
}else {
var type = typeof plugins,
_this = this,
fns = {
'object': function(plgs){
plgs.forEach(function(p){
p = hyphenate(p);
$('[data-'+ p +']').foundation('_init');
});
},
'string': function(){
plugins = hyphenate(plugins);
$('[data-'+ plugins +']').foundation('_init');
},
'undefined': function(){
this['object'](Object.keys(_this._plugins));
}
};
fns[type](plugins);
}
}catch(err){
console.error(err);
}finally{
return plugins;
}
},
/**
* Initialize plugins on any elements within `elem` (and `elem` itself) that aren't already initialized.
* @param {Object} elem - jQuery object containing the element to check inside. Also checks the element itself, unless it's the `document` object.
* @param {String|Array} plugins - A list of plugins to initialize. Leave this out to initialize everything.
*/
reflow: function(elem, plugins) {
// If plugins is undefined, just grab everything
if (typeof plugins === 'undefined') {
plugins = Object.keys(this._plugins);
}
// If plugins is a string, convert it to an array with one item
else if (typeof plugins === 'string') {
plugins = [plugins];
}
var _this = this;
// Iterate through each plugin
$.each(plugins, function(i, name) {
// Get the current plugin
var plugin = _this._plugins[name];
// Localize the search to all elements inside elem, as well as elem itself, unless elem === document
var $elem = $(elem).find('[data-'+name+']').addBack('[data-'+name+']').filter(function () {
return typeof $(this).data("zfPlugin") === 'undefined';
});
// For each plugin found, initialize it
$elem.each(function() {
var $el = $(this),
opts = { reflow: true };
if($el.attr('data-options')){
$el.attr('data-options').split(';').forEach(function(option, _index){
var opt = option.split(':').map(function(el){ return el.trim(); });
if(opt[0]) opts[opt[0]] = parseValue(opt[1]);
});
}
try{
$el.data('zfPlugin', new plugin($(this), opts));
}catch(er){
console.error(er);
}finally{
return;
}
});
});
},
getFnName: functionName,
addToJquery: function($) {
// TODO: consider not making this a jQuery function
// TODO: need way to reflow vs. re-initialize
/**
* The Foundation jQuery method.
* @param {String|Array} method - An action to perform on the current jQuery object.
*/
var foundation = function(method) {
var type = typeof method,
$noJS = $('.no-js');
if($noJS.length){
$noJS.removeClass('no-js');
}
if(type === 'undefined'){//needs to initialize the Foundation object, or an individual plugin.
MediaQuery._init();
Foundation.reflow(this);
}else if(type === 'string'){//an individual method to invoke on a plugin or group of plugins
var args = Array.prototype.slice.call(arguments, 1);//collect all the arguments, if necessary
var plugClass = this.data('zfPlugin');//determine the class of plugin
if(typeof plugClass !== 'undefined' && typeof plugClass[method] !== 'undefined'){//make sure both the class and method exist
if(this.length === 1){//if there's only one, call it directly.
plugClass[method].apply(plugClass, args);
}else {
this.each(function(i, el){//otherwise loop through the jQuery collection and invoke the method on each
plugClass[method].apply($(el).data('zfPlugin'), args);
});
}
}else {//error for no class or no method
throw new ReferenceError("We're sorry, '" + method + "' is not an available method for " + (plugClass ? functionName(plugClass) : 'this element') + '.');
}
}else {//error for invalid argument type
throw new TypeError(`We're sorry, ${type} is not a valid parameter. You must use a string representing the method you wish to invoke.`);
}
return this;
};
$.fn.foundation = foundation;
return $;
}
};
Foundation.util = {
/**
* Function for applying a debounce effect to a function call.
* @function
* @param {Function} func - Function to be called at end of timeout.
* @param {Number} delay - Time in ms to delay the call of `func`.
* @returns function
*/
throttle: function (func, delay) {
var timer = null;
return function () {
var context = this, args = arguments;
if (timer === null) {
timer = setTimeout(function () {
func.apply(context, args);
timer = null;
}, delay);
}
};
}
};
window.Foundation = Foundation;
// Polyfill for requestAnimationFrame
(function() {
if (!Date.now || !window.Date.now)
window.Date.now = Date.now = function() { return new Date().getTime(); };
var vendors = ['webkit', 'moz'];
for (var i = 0; i < vendors.length && !window.requestAnimationFrame; ++i) {
var vp = vendors[i];
window.requestAnimationFrame = window[vp+'RequestAnimationFrame'];
window.cancelAnimationFrame = (window[vp+'CancelAnimationFrame']
|| window[vp+'CancelRequestAnimationFrame']);
}
if (/iP(ad|hone|od).*OS 6/.test(window.navigator.userAgent)
|| !window.requestAnimationFrame || !window.cancelAnimationFrame) {
var lastTime = 0;
window.requestAnimationFrame = function(callback) {
var now = Date.now();
var nextTime = Math.max(lastTime + 16, now);
return setTimeout(function() { callback(lastTime = nextTime); },
nextTime - now);
};
window.cancelAnimationFrame = clearTimeout;
}
/**
* Polyfill for performance.now, required by rAF
*/
if(!window.performance || !window.performance.now){
window.performance = {
start: Date.now(),
now: function(){ return Date.now() - this.start; }
};
}
})();
if (!Function.prototype.bind) {
Function.prototype.bind = function(oThis) {
if (typeof this !== 'function') {
// closest thing possible to the ECMAScript 5
// internal IsCallable function
throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
}
var aArgs = Array.prototype.slice.call(arguments, 1),
fToBind = this,
fNOP = function() {},
fBound = function() {
return fToBind.apply(this instanceof fNOP
? this
: oThis,
aArgs.concat(Array.prototype.slice.call(arguments)));
};
if (this.prototype) {
// native functions don't have a prototype
fNOP.prototype = this.prototype;
}
fBound.prototype = new fNOP();
return fBound;
};
}
// Polyfill to get the name of a function in IE9
function functionName(fn) {
if (typeof Function.prototype.name === 'undefined') {
var funcNameRegex = /function\s([^(]{1,})\(/;
var results = (funcNameRegex).exec((fn).toString());
return (results && results.length > 1) ? results[1].trim() : "";
}
else if (typeof fn.prototype === 'undefined') {
return fn.constructor.name;
}
else {
return fn.prototype.constructor.name;
}
}
function parseValue(str){
if ('true' === str) return true;
else if ('false' === str) return false;
else if (!isNaN(str * 1)) return parseFloat(str);
return str;
}
// Convert PascalCase to kebab-case
// Thank you: http://stackoverflow.com/a/8955580
function hyphenate(str) {
return str.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
}
var Box = {
ImNotTouchingYou: ImNotTouchingYou,
OverlapArea: OverlapArea,
GetDimensions: GetDimensions,
GetExplicitOffsets: GetExplicitOffsets
};
/**
* Compares the dimensions of an element to a container and determines collision events with container.
* @function
* @param {jQuery} element - jQuery object to test for collisions.
* @param {jQuery} parent - jQuery object to use as bounding container.
* @param {Boolean} lrOnly - set to true to check left and right values only.
* @param {Boolean} tbOnly - set to true to check top and bottom values only.
* @default if no parent object passed, detects collisions with `window`.
* @returns {Boolean} - true if collision free, false if a collision in any direction.
*/
function ImNotTouchingYou(element, parent, lrOnly, tbOnly, ignoreBottom) {
return OverlapArea(element, parent, lrOnly, tbOnly, ignoreBottom) === 0;
}
function OverlapArea(element, parent, lrOnly, tbOnly, ignoreBottom) {
var eleDims = GetDimensions(element),
topOver, bottomOver, leftOver, rightOver;
if (parent) {
var parDims = GetDimensions(parent);
bottomOver = (parDims.height + parDims.offset.top) - (eleDims.offset.top + eleDims.height);
topOver = eleDims.offset.top - parDims.offset.top;
leftOver = eleDims.offset.left - parDims.offset.left;
rightOver = (parDims.width + parDims.offset.left) - (eleDims.offset.left + eleDims.width);
}
else {
bottomOver = (eleDims.windowDims.height + eleDims.windowDims.offset.top) - (eleDims.offset.top + eleDims.height);
topOver = eleDims.offset.top - eleDims.windowDims.offset.top;
leftOver = eleDims.offset.left - eleDims.windowDims.offset.left;
rightOver = eleDims.windowDims.width - (eleDims.offset.left + eleDims.width);
}
bottomOver = ignoreBottom ? 0 : Math.min(bottomOver, 0);
topOver = Math.min(topOver, 0);
leftOver = Math.min(leftOver, 0);
rightOver = Math.min(rightOver, 0);
if (lrOnly) {
return leftOver + rightOver;
}
if (tbOnly) {
return topOver + bottomOver;
}
// use sum of squares b/c we care about overlap area.
return Math.sqrt((topOver * topOver) + (bottomOver * bottomOver) + (leftOver * leftOver) + (rightOver * rightOver));
}
/**
* Uses native methods to return an object of dimension values.
* @function
* @param {jQuery || HTML} element - jQuery object or DOM element for which to get the dimensions. Can be any element other that document or window.
* @returns {Object} - nested object of integer pixel values
* TODO - if element is window, return only those values.
*/
function GetDimensions(elem){
elem = elem.length ? elem[0] : elem;
if (elem === window || elem === document) {
throw new Error("I'm sorry, Dave. I'm afraid I can't do that.");
}
var rect = elem.getBoundingClientRect(),
parRect = elem.parentNode.getBoundingClientRect(),
winRect = document.body.getBoundingClientRect(),
winY = window.pageYOffset,
winX = window.pageXOffset;
return {
width: rect.width,
height: rect.height,
offset: {
top: rect.top + winY,
left: rect.left + winX
},
parentDims: {
width: parRect.width,
height: parRect.height,
offset: {
top: parRect.top + winY,
left: parRect.left + winX
}
},
windowDims: {
width: winRect.width,
height: winRect.height,
offset: {
top: winY,
left: winX
}
}
}
}
/**
* Returns an object of top and left integer pixel values for dynamically rendered elements,
* such as: Tooltip, Reveal, and Dropdown. Maintained for backwards compatibility, and where
* you don't know alignment, but generally from
* 6.4 forward you should use GetExplicitOffsets, as GetOffsets conflates position and alignment.
* @function
* @param {jQuery} element - jQuery object for the element being positioned.
* @param {jQuery} anchor - jQuery object for the element's anchor point.
* @param {String} position - a string relating to the desired position of the element, relative to it's anchor
* @param {Number} vOffset - integer pixel value of desired vertical separation between anchor and element.
* @param {Number} hOffset - integer pixel value of desired horizontal separation between anchor and element.
* @param {Boolean} isOverflow - if a collision event is detected, sets to true to default the element to full width - any desired offset.
* TODO alter/rewrite to work with `em` values as well/instead of pixels
*/
function GetExplicitOffsets(element, anchor, position, alignment, vOffset, hOffset, isOverflow) {
var $eleDims = GetDimensions(element),
$anchorDims = anchor ? GetDimensions(anchor) : null;
var topVal, leftVal;
if ($anchorDims !== null) {
// set position related attribute
switch (position) {
case 'top':
topVal = $anchorDims.offset.top - ($eleDims.height + vOffset);
break;
case 'bottom':
topVal = $anchorDims.offset.top + $anchorDims.height + vOffset;
break;
case 'left':
leftVal = $anchorDims.offset.left - ($eleDims.width + hOffset);
break;
case 'right':
leftVal = $anchorDims.offset.left + $anchorDims.width + hOffset;
break;
}
// set alignment related attribute
switch (position) {
case 'top':
case 'bottom':
switch (alignment) {
case 'left':
leftVal = $anchorDims.offset.left + hOffset;
break;
case 'right':
leftVal = $anchorDims.offset.left - $eleDims.width + $anchorDims.width - hOffset;
break;
case 'center':
leftVal = isOverflow ? hOffset : (($anchorDims.offset.left + ($anchorDims.width / 2)) - ($eleDims.width / 2)) + hOffset;
break;
}
break;
case 'right':
case 'left':
switch (alignment) {
case 'bottom':
topVal = $anchorDims.offset.top - vOffset + $anchorDims.height - $eleDims.height;
break;
case 'top':
topVal = $anchorDims.offset.top + vOffset;
break;
case 'center':
topVal = ($anchorDims.offset.top + vOffset + ($anchorDims.height / 2)) - ($eleDims.height / 2);
break;
}
break;
}
}
return {top: topVal, left: leftVal};
}
/**
* Runs a callback function when images are fully loaded.
* @param {Object} images - Image(s) to check if loaded.
* @param {Func} callback - Function to execute when image is fully loaded.
*/
function onImagesLoaded(images, callback){
var unloaded = images.length;
if (unloaded === 0) {
callback();
}
images.each(function(){
// Check if image is loaded
if (this.complete && typeof this.naturalWidth !== 'undefined') {
singleImageLoaded();
}
else {
// If the above check failed, simulate loading on detached element.
var image = new Image();
// Still count image as loaded if it finalizes with an error.
var events = "load.zf.images error.zf.images";
$(image).one(events, function me(event){
// Unbind the event listeners. We're using 'one' but only one of the two events will have fired.
$(this).off(events, me);
singleImageLoaded();