File: /home/mgawa/domains/trieuco.net/public_html/wp-content/plugins/wp-google-maps/lib/ElementQueries.js
/**
* Copyright Marc J. Schmidt. See the LICENSE file at the top-level
* directory of this distribution and at
* https://github.com/marcj/css-element-queries/blob/master/LICENSE.
*/
;
(function (root, factory) {
if (typeof define === "function" && define.amd) {
define(['./ResizeSensor.js'], factory);
} else if (typeof exports === "object") {
module.exports = factory(require('./ResizeSensor.js'));
} else {
root.ElementQueries = factory(root.ResizeSensor);
root.ElementQueries.listen();
}
}(typeof window !== 'undefined' ? window : this, function (ResizeSensor) {
/**
*
* @type {Function}
* @constructor
*/
var ElementQueries = function() {
var trackingActive = false;
var elements = [];
/**
*
* @param element
* @returns {Number}
*/
function getEmSize(element) {
if (!element) {
element = document.documentElement;
}
var fontSize = window.getComputedStyle(element, null).fontSize;
return parseFloat(fontSize) || 16;
}
/**
*
* @copyright https://github.com/Mr0grog/element-query/blob/master/LICENSE
*
* @param {HTMLElement} element
* @param {*} value
* @returns {*}
*/
function convertToPx(element, value) {
var numbers = value.split(/\d/);
var units = numbers[numbers.length-1];
value = parseFloat(value);
switch (units) {
case "px":
return value;
case "em":
return value * getEmSize(element);
case "rem":
return value * getEmSize();
// Viewport units!
// According to http://quirksmode.org/mobile/tableViewport.html
// documentElement.clientWidth/Height gets us the most reliable info
case "vw":
return value * document.documentElement.clientWidth / 100;
case "vh":
return value * document.documentElement.clientHeight / 100;
case "vmin":
case "vmax":
var vw = document.documentElement.clientWidth / 100;
var vh = document.documentElement.clientHeight / 100;
var chooser = Math[units === "vmin" ? "min" : "max"];
return value * chooser(vw, vh);
default:
return value;
// for now, not supporting physical units (since they are just a set number of px)
// or ex/ch (getting accurate measurements is hard)
}
}
/**
*
* @param {HTMLElement} element
* @constructor
*/
function SetupInformation(element) {
this.element = element;
this.options = {};
var key, option, width = 0, height = 0, value, actualValue, attrValues, attrValue, attrName;
/**
* @param {Object} option {mode: 'min|max', property: 'width|height', value: '123px'}
*/
this.addOption = function(option) {
var idx = [option.mode, option.property, option.value].join(',');
this.options[idx] = option;
};
var attributes = ['min-width', 'min-height', 'max-width', 'max-height'];
/**
* Extracts the computed width/height and sets to min/max- attribute.
*/
this.call = function() {
// extract current dimensions
width = this.element.offsetWidth;
height = this.element.offsetHeight;
attrValues = {};
for (key in this.options) {
if (!this.options.hasOwnProperty(key)){
continue;
}
option = this.options[key];
value = convertToPx(this.element, option.value);
actualValue = option.property == 'width' ? width : height;
attrName = option.mode + '-' + option.property;
attrValue = '';
if (option.mode == 'min' && actualValue >= value) {
attrValue += option.value;
}
if (option.mode == 'max' && actualValue <= value) {
attrValue += option.value;
}
if (!attrValues[attrName]) attrValues[attrName] = '';
if (attrValue && -1 === (' '+attrValues[attrName]+' ').indexOf(' ' + attrValue + ' ')) {
attrValues[attrName] += ' ' + attrValue;
}
}
for (var k in attributes) {
if(!attributes.hasOwnProperty(k)) continue;
if (attrValues[attributes[k]]) {
this.element.setAttribute(attributes[k], attrValues[attributes[k]].substr(1));
} else {
this.element.removeAttribute(attributes[k]);
}
}
};
}
/**
* @param {HTMLElement} element
* @param {Object} options
*/
function setupElement(element, options) {
if (element.elementQueriesSetupInformation) {
element.elementQueriesSetupInformation.addOption(options);
} else {
element.elementQueriesSetupInformation = new SetupInformation(element);
element.elementQueriesSetupInformation.addOption(options);
element.elementQueriesSensor = new ResizeSensor(element, function() {
element.elementQueriesSetupInformation.call();
});
}
element.elementQueriesSetupInformation.call();
if (trackingActive && elements.indexOf(element) < 0) {
elements.push(element);
}
}
/**
* @param {String} selector
* @param {String} mode min|max
* @param {String} property width|height
* @param {String} value
*/
var allQueries = {};
function queueQuery(selector, mode, property, value) {
if (typeof(allQueries[mode]) == 'undefined') allQueries[mode] = {};
if (typeof(allQueries[mode][property]) == 'undefined') allQueries[mode][property] = {};
if (typeof(allQueries[mode][property][value]) == 'undefined') allQueries[mode][property][value] = selector;
else allQueries[mode][property][value] += ','+selector;
}
function getQuery() {
var query;
if (document.querySelectorAll) query = document.querySelectorAll.bind(document);
if (!query && 'undefined' !== typeof $$) query = $$;
if (!query && 'undefined' !== typeof jQuery) query = jQuery;
if (!query) {
throw 'No document.querySelectorAll, jQuery or Mootools\'s $$ found.';
}
return query;
}
/**
* Start the magic. Go through all collected rules (readRules()) and attach the resize-listener.
*/
function findElementQueriesElements() {
var query = getQuery();
for (var mode in allQueries) if (allQueries.hasOwnProperty(mode)) {
for (var property in allQueries[mode]) if (allQueries[mode].hasOwnProperty(property)) {
for (var value in allQueries[mode][property]) if (allQueries[mode][property].hasOwnProperty(value)) {
var elements = query(allQueries[mode][property][value]);
for (var i = 0, j = elements.length; i < j; i++) {
setupElement(elements[i], {
mode: mode,
property: property,
value: value
});
}
}
}
}
}
/**
*
* @param {HTMLElement} element
*/
function attachResponsiveImage(element) {
var children = [];
var rules = [];
var sources = [];
var defaultImageId = 0;
var lastActiveImage = -1;
var loadedImages = [];
for (var i in element.children) {
if(!element.children.hasOwnProperty(i)) continue;
if (element.children[i].tagName && element.children[i].tagName.toLowerCase() === 'img') {
children.push(element.children[i]);
var minWidth = element.children[i].getAttribute('min-width') || element.children[i].getAttribute('data-min-width');
//var minHeight = element.children[i].getAttribute('min-height') || element.children[i].getAttribute('data-min-height');
var src = element.children[i].getAttribute('data-src') || element.children[i].getAttribute('url');
sources.push(src);
var rule = {
minWidth: minWidth
};
rules.push(rule);
if (!minWidth) {
defaultImageId = children.length - 1;
element.children[i].style.display = 'block';
} else {
element.children[i].style.display = 'none';
}
}
}
lastActiveImage = defaultImageId;
function check() {
var imageToDisplay = false, i;
for (i in children){
if(!children.hasOwnProperty(i)) continue;
if (rules[i].minWidth) {
if (element.offsetWidth > rules[i].minWidth) {
imageToDisplay = i;
}
}
}
if (!imageToDisplay) {
//no rule matched, show default
imageToDisplay = defaultImageId;
}
if (lastActiveImage != imageToDisplay) {
//image change
if (!loadedImages[imageToDisplay]){
//image has not been loaded yet, we need to load the image first in memory to prevent flash of
//no content
var image = new Image();
image.onload = function() {
children[imageToDisplay].src = sources[imageToDisplay];
children[lastActiveImage].style.display = 'none';
children[imageToDisplay].style.display = 'block';
loadedImages[imageToDisplay] = true;
lastActiveImage = imageToDisplay;
};
image.src = sources[imageToDisplay];
} else {
children[lastActiveImage].style.display = 'none';
children[imageToDisplay].style.display = 'block';
lastActiveImage = imageToDisplay;
}
} else {
//make sure for initial check call the .src is set correctly
children[imageToDisplay].src = sources[imageToDisplay];
}
}
element.resizeSensor = new ResizeSensor(element, check);
check();
if (trackingActive) {
elements.push(element);
}
}
function findResponsiveImages(){
var query = getQuery();
var elements = query('[data-responsive-image],[responsive-image]');
for (var i = 0, j = elements.length; i < j; i++) {
attachResponsiveImage(elements[i]);
}
}
var regex = /,?[\s\t]*([^,\n]*?)((?:\[[\s\t]*?(?:min|max)-(?:width|height)[\s\t]*?[~$\^]?=[\s\t]*?"[^"]*?"[\s\t]*?])+)([^,\n\s\{]*)/mgi;
var attrRegex = /\[[\s\t]*?(min|max)-(width|height)[\s\t]*?[~$\^]?=[\s\t]*?"([^"]*?)"[\s\t]*?]/mgi;
/**
* @param {String} css
*/
function extractQuery(css) {
var match;
var smatch;
css = css.replace(/'/g, '"');
while (null !== (match = regex.exec(css))) {
smatch = match[1] + match[3];
attrs = match[2];
while (null !== (attrMatch = attrRegex.exec(attrs))) {
queueQuery(smatch, attrMatch[1], attrMatch[2], attrMatch[3]);
}
}
}
/**
* @param {CssRule[]|String} rules
*/
function readRules(rules) {
var selector = '';
if (!rules) {
return;
}
if ('string' === typeof rules) {
rules = rules.toLowerCase();
if (-1 !== rules.indexOf('min-width') || -1 !== rules.indexOf('max-width')) {
extractQuery(rules);
}
} else {
for (var i = 0, j = rules.length; i < j; i++) {
if (1 === rules[i].type) {
selector = rules[i].selectorText || rules[i].cssText;
if (-1 !== selector.indexOf('min-height') || -1 !== selector.indexOf('max-height')) {
extractQuery(selector);
}else if(-1 !== selector.indexOf('min-width') || -1 !== selector.indexOf('max-width')) {
extractQuery(selector);
}
} else if (4 === rules[i].type) {
readRules(rules[i].cssRules || rules[i].rules);
} else if (3 === rules[i].type) {
readRules(rules[i].styleSheet.cssRules);
}
}
}
}
var defaultCssInjected = false;
/**
* Searches all css rules and setups the event listener to all elements with element query rules..
*
* @param {Boolean} withTracking allows and requires you to use detach, since we store internally all used elements
* (no garbage collection possible if you don not call .detach() first)
*/
this.init = function(withTracking) {
trackingActive = typeof withTracking === 'undefined' ? false : withTracking;
for (var i = 0, j = document.styleSheets.length; i < j; i++) {
try {
readRules(document.styleSheets[i].cssRules || document.styleSheets[i].rules || document.styleSheets[i].cssText);
} catch(e) {
if (e.name !== 'SecurityError') {
throw e;
}
}
}
if (!defaultCssInjected) {
var style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = '[responsive-image] > img, [data-responsive-image] {overflow: hidden; padding: 0; } [responsive-image] > img, [data-responsive-image] > img { width: 100%;}';
document.getElementsByTagName('head')[0].appendChild(style);
defaultCssInjected = true;
}
findElementQueriesElements();
findResponsiveImages();
};
/**
*
* @param {Boolean} withTracking allows and requires you to use detach, since we store internally all used elements
* (no garbage collection possible if you don not call .detach() first)
*/
this.update = function(withTracking) {
this.init(withTracking);
};
this.detach = function() {
if (!trackingActive) {
throw 'withTracking is not enabled. We can not detach elements since we don not store it.' +
'Use ElementQueries.withTracking = true; before domready or call ElementQueryes.update(true).';
}
var element;
while (element = elements.pop()) {
ElementQueries.detach(element);
}
elements = [];
};
};
/**
*
* @param {Boolean} withTracking allows and requires you to use detach, since we store internally all used elements
* (no garbage collection possible if you don not call .detach() first)
*/
ElementQueries.update = function(withTracking) {
ElementQueries.instance.update(withTracking);
};
/**
* Removes all sensor and elementquery information from the element.
*
* @param {HTMLElement} element
*/
ElementQueries.detach = function(element) {
if (element.elementQueriesSetupInformation) {
//element queries
element.elementQueriesSensor.detach();
delete element.elementQueriesSetupInformation;
delete element.elementQueriesSensor;
} else if (element.resizeSensor) {
//responsive image
element.resizeSensor.detach();
delete element.resizeSensor;
} else {
//console.log('detached already', element);
}
};
ElementQueries.withTracking = false;
ElementQueries.init = function() {
if (!ElementQueries.instance) {
ElementQueries.instance = new ElementQueries();
}
ElementQueries.instance.init(ElementQueries.withTracking);
};
var domLoaded = function (callback) {
/* Internet Explorer */
/*@cc_on
@if (@_win32 || @_win64)
document.write('<script id="ieScriptLoad" defer src="//:"><\/script>');
document.getElementById('ieScriptLoad').onreadystatechange = function() {
if (this.readyState == 'complete') {
callback();
}
};
@end @*/
/* Mozilla, Chrome, Opera */
if (document.addEventListener) {
document.addEventListener('DOMContentLoaded', callback, false);
}
/* Safari, iCab, Konqueror */
else if (/KHTML|WebKit|iCab/i.test(navigator.userAgent)) {
var DOMLoadTimer = setInterval(function () {
if (/loaded|complete/i.test(document.readyState)) {
callback();
clearInterval(DOMLoadTimer);
}
}, 10);
}
/* Other web browsers */
else window.onload = callback;
};
ElementQueries.listen = function() {
domLoaded(ElementQueries.init);
};
return ElementQueries;
}));