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// module for creating fluid containers
/*global window, define*/
define(['jquery'], function ($) {
'use strict';
var fluid = {};
var defaultConfig = {
// based on twitter bootstrap values
breakpoints: [320, 480, 768, 940, 1210],
breakpointClasses: ["tiny", "small", "medium", "large", "huge"]
};
// maps registered selectors to their configs
var selectorMap = {};
/**
Adapts an element's class based on its outer width and configured breakpoints.
When the width is larger than the largest breakpoint, no class will be added.
*/
function changeLayout(elem, config) {
if (!config) {
config = defaultConfig;
}
var $elem = $(elem);
var ow = $elem.outerWidth();
$elem.removeClass(config.breakpointClasses.join(" "));
var i = 0;
for (i = 0; i < config.breakpoints.length; i++) {
var breakpoint = config.breakpoints[i];
if (ow <= breakpoint) {
$elem.addClass(config.breakpointClasses[i]);
break;
}
}
}
/**
* Runs a manual update according to a given selector.
* @param {String} selector the selector
* @param {Object} [config] The config to use for this selector. Uses defaults if not provided.
* @return {Object} the fluid object
*/
fluid.update = function (selector, config) {
$(selector).each(function () {
changeLayout(this, config);
});
return fluid;
};
/**
* Runs a manual update for all registered selectors.
* @return {Object} the fluid object
*/
fluid.updateRegistered = function () {
var selector;
for (selector in selectorMap) {
if (selectorMap.hasOwnProperty(selector)) {
fluid.update(selector, selectorMap[selector]);
}
}
return fluid;
};
/**
* Register a jQuery selector to enable automatic updates on window resize events.
* @param {String} selector
* @param {Object} [config] The config to use for this selector. Uses defaults if not provided.
* @return {Object} the fluid object
*/
fluid.register = function (selector, config) {
selectorMap[selector] = config;
return fluid;
};
$(window).resize(function () {
fluid.updateRegistered();
});
// Make fluid immutable
Object.freeze(fluid);
return fluid;
});
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