// Inspired by base2 and Prototype
(function(){var a=false,b=/xyz/.test(function(){xyz})?/\b_super\b/:/.*/;this.Class=function(){};Class.extend=function(c){function g(){if(!a&&this.init)this.init.apply(this,arguments);}var d=this.prototype;a=true;var e=new this;a=false;for(var f in c){e[f]=typeof c[f]=="function"&&typeof d[f]=="function"&&b.test(c[f])?function(a,b){return function(){var c=this._super;this._super=d[a];var e=b.apply(this,arguments);this._super=c;return e;};}(f,c[f]):c[f]}g.prototype=e;g.prototype.constructor=g;g.extend=arguments.callee;return g;};})();
+/*!
+ * enquire.js v2.1.0 - Awesome Media Queries in JavaScript
+ * Copyright (c) 2013 Nick Williams - http://wicky.nillia.ms/enquire.js
+ * License: MIT (http://www.opensource.org/licenses/mit-license.php)
+ */
+
+;(function (name, context, factory) {
+ var matchMedia = context.matchMedia;
+
+ if (typeof module !== 'undefined' && module.exports) {
+ module.exports = factory(matchMedia);
+ }
+ else if (typeof define === 'function' && define.amd) {
+ define(function() {
+ return (context[name] = factory(matchMedia));
+ });
+ }
+ else {
+ context[name] = factory(matchMedia);
+ }
+}('enquire', this, function (matchMedia) {
+
+ 'use strict';
+
+ /*jshint unused:false */
+ /**
+ * Helper function for iterating over a collection
+ *
+ * @param collection
+ * @param fn
+ */
+ function each(collection, fn) {
+ var i = 0,
+ length = collection.length,
+ cont;
+
+ for(i; i < length; i++) {
+ cont = fn(collection[i], i);
+ if(cont === false) {
+ break; //allow early exit
+ }
+ }
+ }
+
+ /**
+ * Helper function for determining whether target object is an array
+ *
+ * @param target the object under test
+ * @return {Boolean} true if array, false otherwise
+ */
+ function isArray(target) {
+ return Object.prototype.toString.apply(target) === '[object Array]';
+ }
+
+ /**
+ * Helper function for determining whether target object is a function
+ *
+ * @param target the object under test
+ * @return {Boolean} true if function, false otherwise
+ */
+ function isFunction(target) {
+ return typeof target === 'function';
+ }
+
+ /**
+ * Delegate to handle a media query being matched and unmatched.
+ *
+ * @param {object} options
+ * @param {function} options.match callback for when the media query is matched
+ * @param {function} [options.unmatch] callback for when the media query is unmatched
+ * @param {function} [options.setup] one-time callback triggered the first time a query is matched
+ * @param {boolean} [options.deferSetup=false] should the setup callback be run immediately, rather than first time query is matched?
+ * @constructor
+ */
+ function QueryHandler(options) {
+ this.options = options;
+ !options.deferSetup && this.setup();
+ }
+ QueryHandler.prototype = {
+
+ /**
+ * coordinates setup of the handler
+ *
+ * @function
+ */
+ setup : function() {
+ if(this.options.setup) {
+ this.options.setup();
+ }
+ this.initialised = true;
+ },
+
+ /**
+ * coordinates setup and triggering of the handler
+ *
+ * @function
+ */
+ on : function() {
+ !this.initialised && this.setup();
+ this.options.match && this.options.match();
+ },
+
+ /**
+ * coordinates the unmatch event for the handler
+ *
+ * @function
+ */
+ off : function() {
+ this.options.unmatch && this.options.unmatch();
+ },
+
+ /**
+ * called when a handler is to be destroyed.
+ * delegates to the destroy or unmatch callbacks, depending on availability.
+ *
+ * @function
+ */
+ destroy : function() {
+ this.options.destroy ? this.options.destroy() : this.off();
+ },
+
+ /**
+ * determines equality by reference.
+ * if object is supplied compare options, if function, compare match callback
+ *
+ * @function
+ * @param {object || function} [target] the target for comparison
+ */
+ equals : function(target) {
+ return this.options === target || this.options.match === target;
+ }
+
+ };
+ /**
+ * Represents a single media query, manages it's state and registered handlers for this query
+ *
+ * @constructor
+ * @param {string} query the media query string
+ * @param {boolean} [isUnconditional=false] whether the media query should run regardless of whether the conditions are met. Primarily for helping older browsers deal with mobile-first design
+ */
+ function MediaQuery(query, isUnconditional) {
+ this.query = query;
+ this.isUnconditional = isUnconditional;
+ this.handlers = [];
+ this.mql = matchMedia(query);
+
+ var self = this;
+ this.listener = function(mql) {
+ self.mql = mql;
+ self.assess();
+ };
+ this.mql.addListener(this.listener);
+ }
+ MediaQuery.prototype = {
+
+ /**
+ * add a handler for this query, triggering if already active
+ *
+ * @param {object} handler
+ * @param {function} handler.match callback for when query is activated
+ * @param {function} [handler.unmatch] callback for when query is deactivated
+ * @param {function} [handler.setup] callback for immediate execution when a query handler is registered
+ * @param {boolean} [handler.deferSetup=false] should the setup callback be deferred until the first time the handler is matched?
+ */
+ addHandler : function(handler) {
+ var qh = new QueryHandler(handler);
+ this.handlers.push(qh);
+
+ this.matches() && qh.on();
+ },
+
+ /**
+ * removes the given handler from the collection, and calls it's destroy methods
+ *
+ * @param {object || function} handler the handler to remove
+ */
+ removeHandler : function(handler) {
+ var handlers = this.handlers;
+ each(handlers, function(h, i) {
+ if(h.equals(handler)) {
+ h.destroy();
+ return !handlers.splice(i,1); //remove from array and exit each early
+ }
+ });
+ },
+
+ /**
+ * Determine whether the media query should be considered a match
+ *
+ * @return {Boolean} true if media query can be considered a match, false otherwise
+ */
+ matches : function() {
+ return this.mql.matches || this.isUnconditional;
+ },
+
+ /**
+ * Clears all handlers and unbinds events
+ */
+ clear : function() {
+ each(this.handlers, function(handler) {
+ handler.destroy();
+ });
+ this.mql.removeListener(this.listener);
+ this.handlers.length = 0; //clear array
+ },
+
+ /*
+ * Assesses the query, turning on all handlers if it matches, turning them off if it doesn't match
+ */
+ assess : function() {
+ var action = this.matches() ? 'on' : 'off';
+
+ each(this.handlers, function(handler) {
+ handler[action]();
+ });
+ }
+ };
+ /**
+ * Allows for registration of query handlers.
+ * Manages the query handler's state and is responsible for wiring up browser events
+ *
+ * @constructor
+ */
+ function MediaQueryDispatch () {
+ if(!matchMedia) {
+ throw new Error('matchMedia not present, legacy browsers require a polyfill');
+ }
+
+ this.queries = {};
+ this.browserIsIncapable = !matchMedia('only all').matches;
+ }
+
+ MediaQueryDispatch.prototype = {
+
+ /**
+ * Registers a handler for the given media query
+ *
+ * @param {string} q the media query
+ * @param {object || Array || Function} options either a single query handler object, a function, or an array of query handlers
+ * @param {function} options.match fired when query matched
+ * @param {function} [options.unmatch] fired when a query is no longer matched
+ * @param {function} [options.setup] fired when handler first triggered
+ * @param {boolean} [options.deferSetup=false] whether setup should be run immediately or deferred until query is first matched
+ * @param {boolean} [shouldDegrade=false] whether this particular media query should always run on incapable browsers
+ */
+ register : function(q, options, shouldDegrade) {
+ var queries = this.queries,
+ isUnconditional = shouldDegrade && this.browserIsIncapable;
+
+ if(!queries[q]) {
+ queries[q] = new MediaQuery(q, isUnconditional);
+ }
+
+ //normalise to object in an array
+ if(isFunction(options)) {
+ options = { match : options };
+ }
+ if(!isArray(options)) {
+ options = [options];
+ }
+ each(options, function(handler) {
+ queries[q].addHandler(handler);
+ });
+
+ return this;
+ },
+
+ /**
+ * unregisters a query and all it's handlers, or a specific handler for a query
+ *
+ * @param {string} q the media query to target
+ * @param {object || function} [handler] specific handler to unregister
+ */
+ unregister : function(q, handler) {
+ var query = this.queries[q];
+
+ if(query) {
+ if(handler) {
+ query.removeHandler(handler);
+ }
+ else {
+ query.clear();
+ delete this.queries[q];
+ }
+ }
+
+ return this;
+ }
+ };
+
+ return new MediaQueryDispatch();
+
+}));
+
/**
* Provides a hashCode() method for strings, similar to Java's String.hashCode().
*
projects / GitHub / WoltLab / WCF.git / commitdiff