Commit 0934fbfa authored by MediaFormat's avatar MediaFormat
Browse files

CSS Fix styles for narrow columns

parent 715c92be
'use strict';
/**
* 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 () {
//<style> element with our dynamically created styles
var cssStyleElement;
//all rules found for element queries
var allQueries = {};
//association map to identify which selector belongs to a element from the animationstart event.
var idToSelectorMapping = [];
/**
*
* @param element
* @returns {Number}
*/
function getEmSize(element) {
if (!element) {
element = document.documentElement;
}
var fontSize = window.getComputedStyle(element, null).fontSize;
return parseFloat(fontSize) || 16;
}
/**
* Get element size
* @param {HTMLElement} element
* @returns {Object} {width, height}
*/
function getElementSize(element) {
if (!element.getBoundingClientRect) {
return {
width: element.offsetWidth,
height: element.offsetHeight
}
}
var rect = element.getBoundingClientRect();
return {
width: Math.round(rect.width),
height: Math.round(rect.height)
}
}
/**
*
* @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
* @param {String} id
* @constructor
*/
function SetupInformation(element, id) {
this.element = element;
var key, option, elementSize, value, actualValue, attrValues, attrValue, attrName;
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
elementSize = getElementSize(this.element);
attrValues = {};
for (key in allQueries[id]) {
if (!allQueries[id].hasOwnProperty(key)) {
continue;
}
option = allQueries[id][key];
value = convertToPx(this.element, option.value);
actualValue = option.property === 'width' ? elementSize.width : elementSize.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} id
*/
function setupElement(element, id) {
if (!element.elementQueriesSetupInformation) {
element.elementQueriesSetupInformation = new SetupInformation(element, id);
}
if (!element.elementQueriesSensor) {
element.elementQueriesSensor = new ResizeSensor(element, function () {
element.elementQueriesSetupInformation.call();
});
}
}
/**
* Stores rules to the selector that should be applied once resized.
*
* @param {String} selector
* @param {String} mode min|max
* @param {String} property width|height
* @param {String} value
*/
function queueQuery(selector, mode, property, value) {
if (typeof(allQueries[selector]) === 'undefined') {
allQueries[selector] = [];
// add animation to trigger animationstart event, so we know exactly when a element appears in the DOM
var id = idToSelectorMapping.length;
cssStyleElement.innerHTML += '\n' + selector + ' {animation: 0.1s element-queries;}';
cssStyleElement.innerHTML += '\n' + selector + ' > .resize-sensor {min-width: '+id+'px;}';
idToSelectorMapping.push(selector);
}
allQueries[selector].push({
mode: mode,
property: property,
value: value
});
}
function getQuery(container) {
var query;
if (document.querySelectorAll) query = (container) ? container.querySelectorAll.bind(container) : 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;
}
/**
* If animationStart didn't catch a new element in the DOM, we can manually search for it
*/
function findElementQueriesElements(container) {
var query = getQuery(container);
for (var selector in allQueries) if (allQueries.hasOwnProperty(selector)) {
// find all elements based on the extract query selector from the element query rule
var elements = query(selector, container);
for (var i = 0, j = elements.length; i < j; i++) {
setupElement(elements[i], selector);
}
}
}
/**
*
* @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.resizeSensorInstance = new ResizeSensor(element, check);
check();
}
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, smatch, attrs, attrMatch;
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) {
if(rules[i].styleSheet.hasOwnProperty("cssRules")) {
readRules(rules[i].styleSheet.cssRules);
}
}
}
}
}
var defaultCssInjected = false;
/**
* Searches all css rules and setups the event listener to all elements with element query rules..
*/
this.init = function () {
var animationStart = 'animationstart';
if (typeof document.documentElement.style['webkitAnimationName'] !== 'undefined') {
animationStart = 'webkitAnimationStart';
} else if (typeof document.documentElement.style['MozAnimationName'] !== 'undefined') {
animationStart = 'mozanimationstart';
} else if (typeof document.documentElement.style['OAnimationName'] !== 'undefined') {
animationStart = 'oanimationstart';
}
document.body.addEventListener(animationStart, function (e) {
var element = e.target;
var styles = element && window.getComputedStyle(element, null);
var animationName = styles && styles.getPropertyValue('animation-name');
var requiresSetup = animationName && (-1 !== animationName.indexOf('element-queries'));
if (requiresSetup) {
element.elementQueriesSensor = new ResizeSensor(element, function () {
if (element.elementQueriesSetupInformation) {
element.elementQueriesSetupInformation.call();
}
});
var sensorStyles = window.getComputedStyle(element.resizeSensor, null);
var id = sensorStyles.getPropertyValue('min-width');
id = parseInt(id.replace('px', ''));
setupElement(e.target, idToSelectorMapping[id]);
}
});
if (!defaultCssInjected) {
cssStyleElement = document.createElement('style');
cssStyleElement.type = 'text/css';
cssStyleElement.innerHTML = '[responsive-image] > img, [data-responsive-image] {overflow: hidden; padding: 0; } [responsive-image] > img, [data-responsive-image] > img {width: 100%;}';
//safari wants at least one rule in keyframes to start working
cssStyleElement.innerHTML += '\n@keyframes element-queries { 0% { visibility: inherit; } }';
document.getElementsByTagName('head')[0].appendChild(cssStyleElement);
defaultCssInjected = true;
}
for (var i = 0, j = document.styleSheets.length; i < j; i++) {
try {
if (document.styleSheets[i].href && 0 === document.styleSheets[i].href.indexOf('file://')) {
console.warn("CssElementQueries: unable to parse local css files, " + document.styleSheets[i].href);
}
readRules(document.styleSheets[i].cssRules || document.styleSheets[i].rules || document.styleSheets[i].cssText);
} catch (e) {
}
}
findResponsiveImages();
};
/**
* Go through all collected rules (readRules()) and attach the resize-listener.
* Not necessary to call it manually, since we detect automatically when new elements
* are available in the DOM. However, sometimes handy for dirty DOM modifications.
*
* @param {HTMLElement} container only elements of the container are considered (document.body if not set)
*/
this.findElementQueriesElements = function (container) {
findElementQueriesElements(container);
};
this.update = function () {
this.init();
};
};
ElementQueries.update = function () {
ElementQueries.instance.update();
};
/**
* 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.resizeSensorInstance) {
//responsive image
element.resizeSensorInstance.detach();
delete element.resizeSensorInstance;
}
};
ElementQueries.init = function () {
if (!ElementQueries.instance) {
ElementQueries.instance = new ElementQueries();
}
ElementQueries.instance.init();
};
var domLoaded = function (callback) {
/* 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.findElementQueriesElements = function (container) {
ElementQueries.instance.findElementQueriesElements(container);
};
ElementQueries.listen = function () {
domLoaded(ElementQueries.init);
};
return ElementQueries;
}));
'use strict';
/**
* 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(factory);
} else if (typeof exports === "object") {
module.exports = factory();
} else {
root.ResizeSensor = factory();
}
}(typeof window !== 'undefined' ? window : this, function () {
// Make sure it does not throw in a SSR (Server Side Rendering) situation
if (typeof window === "undefined") {
return null;
}
// https://github.com/Semantic-Org/Semantic-UI/issues/3855
// https://github.com/marcj/css-element-queries/issues/257
var globalWindow = typeof window != 'undefined' && window.Math == Math
? window
: typeof self != 'undefined' && self.Math == Math
? self
: Function('return this')();
// Only used for the dirty checking, so the event callback count is limited to max 1 call per fps per sensor.
// In combination with the event based resize sensor this saves cpu time, because the sensor is too fast and
// would generate too many unnecessary events.
var requestAnimationFrame = globalWindow.requestAnimationFrame ||
globalWindow.mozRequestAnimationFrame ||
globalWindow.webkitRequestAnimationFrame ||
function (fn) {
return globalWindow.setTimeout(fn, 20);
};
/**
* Iterate over each of the provided element(s).
*
* @param {HTMLElement|HTMLElement[]} elements
* @param {Function} callback
*/
function forEachElement(elements, callback){
var elementsType = Object.prototype.toString.call(elements);
var isCollectionTyped = ('[object Array]' === elementsType
|| ('[object NodeList]' === elementsType)
|| ('[object HTMLCollection]' === elementsType)
|| ('[object Object]' === elementsType)
|| ('undefined' !== typeof jQuery && elements instanceof jQuery) //jquery
|| ('undefined' !== typeof Elements && elements instanceof Elements) //mootools
);
var i = 0, j = elements.length;
if (isCollectionTyped) {
for (; i < j; i++) {
callback(elements[i]);
}
} else {
callback(elements);
}
}
/**
* Get element size
* @param {HTMLElement} element
* @returns {Object} {width, height}
*/
function getElementSize(element) {
if (!element.getBoundingClientRect) {
return {