2014-08-01 01:38:38 +02:00
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webshim.register('url', function($, webshims, window, document, undefined, options){
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'use strict';
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// URL Polyfill
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// Draft specification: http://url.spec.whatwg.org
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// Notes:
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// - Primarily useful for parsing URLs and modifying query parameters
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// - Should work in IE8+ and everything more modern
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(function (global) {
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// Browsers may have:
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// * No global URL object
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// * URL with static methods only - may have a dummy constructor
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// * URL with members except searchParams
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// * Full URL API support
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var origURL = global.URL;
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var nativeURL;
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try {
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if (origURL) {
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nativeURL = new global.URL('http://example.com');
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if ('searchParams' in nativeURL)
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return;
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if (!('href' in nativeURL))
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nativeURL = undefined;
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}
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} catch (_) {}
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function URLUtils(url) {
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if (nativeURL)
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return new origURL(url);
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var anchor = document.createElement('a');
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anchor.href = url;
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return anchor;
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}
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global.URL = function URL(url, base) {
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if (!(this instanceof global.URL))
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throw new TypeError("Failed to construct 'URL': Please use the 'new' operator.");
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if (base) {
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url = (function () {
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if (nativeURL) return new origURL(url, base).href;
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var doc;
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// Use another document/base tag/anchor for relative URL resolution, if possible
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if (document.implementation && document.implementation.createHTMLDocument) {
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doc = document.implementation.createHTMLDocument('');
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} else if (document.implementation && document.implementation.createDocument) {
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doc = document.implementation.createElement('http://www.w3.org/1999/xhtml', 'html', null);
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doc.documentElement.appendChild(doc.createElement('head'));
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doc.documentElement.appendChild(doc.createElement('body'));
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} else if (window.ActiveXObject) {
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doc = new window.ActiveXObject('htmlfile');
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doc.write('<head></head><body></body>');
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doc.close();
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}
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if (!doc) throw Error('base not supported');
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var baseTag = doc.createElement('base');
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baseTag.href = base;
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doc.getElementsByTagName('head')[0].appendChild(baseTag);
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var anchor = doc.createElement('a');
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anchor.href = url;
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return anchor.href;
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}());
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}
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// An inner object implementing URLUtils (either a native URL
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// object or an HTMLAnchorElement instance) is used to perform the
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// URL algorithms. With full ES5 getter/setter support, return a
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// regular object For IE8's limited getter/setter support, a
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// different HTMLAnchorElement is returned with properties
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// overridden
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var instance = URLUtils(url || '');
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// Detect for ES5 getter/setter support
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var ES5_GET_SET = (Object.defineProperties && (function () {
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var o = {}; Object.defineProperties(o, { p: { 'get': function () { return true; } } }); return o.p;
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}()));
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var self = ES5_GET_SET ? this : document.createElement('a');
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// NOTE: Doesn't do the encoding/decoding dance
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function parse(input, isindex) {
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var sequences = input.split('&');
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if (isindex && sequences[0].indexOf('=') === -1)
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sequences[0] = '=' + sequences[0];
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var pairs = [];
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sequences.forEach(function (bytes) {
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if (bytes.length === 0) return;
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var index = bytes.indexOf('=');
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if (index !== -1) {
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var name = bytes.substring(0, index);
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var value = bytes.substring(index + 1);
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} else {
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name = bytes;
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value = '';
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}
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2014-11-05 21:25:18 +01:00
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name = name.replace(/\+/g, ' ');
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value = value.replace(/\+/g, ' ');
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2014-08-01 01:38:38 +02:00
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pairs.push({ name: name, value: value });
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});
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var output = [];
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pairs.forEach(function (pair) {
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output.push({
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name: decodeURIComponent(pair.name),
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value: decodeURIComponent(pair.value)
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});
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});
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2014-11-05 21:25:18 +01:00
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return output;
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2014-08-01 01:38:38 +02:00
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}
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function URLSearchParams(url_object, init) {
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var pairs = [];
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if (init)
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pairs = parse(init);
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this._setPairs = function (list) { pairs = list; };
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this._updateSteps = function () { updateSteps(); };
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var updating = false;
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function updateSteps() {
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if (updating) return;
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updating = true;
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// TODO: For all associated url objects
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url_object.search = serialize(pairs);
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updating = false;
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}
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// NOTE: Doesn't do the encoding/decoding dance
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function serialize(pairs) {
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var output = '', first = true;
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pairs.forEach(function (pair) {
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var name = encodeURIComponent(pair.name);
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var value = encodeURIComponent(pair.value);
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if (!first) output += '&';
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output += name + '=' + value;
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first = false;
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});
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2014-11-05 21:25:18 +01:00
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return output.replace(/%20/g, '+');
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2014-08-01 01:38:38 +02:00
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}
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2014-11-05 21:25:18 +01:00
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Object.defineProperties(this, {
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2014-08-01 01:38:38 +02:00
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append: {
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value: function (name, value) {
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pairs.push({ name: name, value: value });
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updateSteps();
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}
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},
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'delete': {
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value: function (name) {
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for (var i = 0; i < pairs.length;) {
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if (pairs[i].name === name)
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pairs.splice(i, 1);
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else
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++i;
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}
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updateSteps();
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}
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},
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get: {
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value: function (name) {
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for (var i = 0; i < pairs.length; ++i) {
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if (pairs[i].name === name)
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return pairs[i].value;
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}
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return null;
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}
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},
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getAll: {
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value: function (name) {
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var result = [];
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for (var i = 0; i < pairs.length; ++i) {
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if (pairs[i].name === name)
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result.push(pairs[i].value);
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}
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return result;
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}
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},
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has: {
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value: function (name) {
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for (var i = 0; i < pairs.length; ++i) {
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if (pairs[i].name === name)
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return true;
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}
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return false;
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}
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},
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set: {
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value: function (name, value) {
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var found = false;
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for (var i = 0; i < pairs.length;) {
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if (pairs[i].name === name) {
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if (!found) {
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pairs[i].value = value;
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2014-11-05 21:25:18 +01:00
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found = true;
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2014-08-01 01:38:38 +02:00
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++i;
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} else {
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pairs.splice(i, 1);
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}
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} else {
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++i;
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}
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}
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2014-11-05 21:25:18 +01:00
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if (!found)
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pairs.push({ name: name, value: value });
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2014-08-01 01:38:38 +02:00
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updateSteps();
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}
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},
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toString: {
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value: function () {
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return serialize(pairs);
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}
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}
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});
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};
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var queryObject = new URLSearchParams(
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self, instance.search ? instance.search.substring(1) : null);
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2014-11-05 21:25:18 +01:00
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Object.defineProperties(self, {
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2014-08-01 01:38:38 +02:00
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href: {
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get: function () { return instance.href; },
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set: function (v) { instance.href = v; tidy_instance(); update_steps(); }
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},
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origin: {
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get: function () {
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if ('origin' in instance) return instance.origin;
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return this.protocol + '//' + this.host;
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}
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},
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protocol: {
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get: function () { return instance.protocol; },
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set: function (v) { instance.protocol = v; }
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},
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username: {
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get: function () { return instance.username; },
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set: function (v) { instance.username = v; }
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},
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password: {
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get: function () { return instance.password; },
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set: function (v) { instance.password = v; }
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},
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host: {
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get: function () {
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// IE returns default port in |host|
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var re = {'http:': /:80$/, 'https:': /:443$/, 'ftp:': /:21$/}[instance.protocol];
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return re ? instance.host.replace(re, '') : instance.host;
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},
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set: function (v) { instance.host = v; }
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},
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hostname: {
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get: function () { return instance.hostname; },
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set: function (v) { instance.hostname = v; }
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},
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port: {
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get: function () { return instance.port; },
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set: function (v) { instance.port = v; }
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},
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pathname: {
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get: function () {
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// IE does not include leading '/' in |pathname|
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if (instance.pathname.charAt(0) !== '/') return '/' + instance.pathname;
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return instance.pathname;
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},
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set: function (v) { instance.pathname = v; }
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},
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search: {
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get: function () { return instance.search; },
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set: function (v) {
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if (instance.search === v) return;
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instance.search = v; tidy_instance(); update_steps();
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}
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},
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searchParams: {
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get: function () { return queryObject; }
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// TODO: implement setter
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},
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hash: {
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get: function () { return instance.hash; },
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set: function (v) { instance.hash = v; tidy_instance(); }
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2014-11-05 21:25:18 +01:00
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},
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toString: {
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value: function() { return instance.toString(); }
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},
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valueOf: {
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value: function() { return instance.valueOf(); }
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2014-08-01 01:38:38 +02:00
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}
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});
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function tidy_instance() {
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var href = instance.href.replace(/#$|\?$|\?(?=#)/g, '');
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if (instance.href !== href)
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instance.href = href;
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}
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function update_steps() {
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queryObject._setPairs(instance.search ? parse(instance.search.substring(1)) : []);
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queryObject._updateSteps();
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2014-11-05 21:25:18 +01:00
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};
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2014-08-01 01:38:38 +02:00
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return self;
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};
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if (origURL) {
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for (var i in origURL) {
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if (origURL.hasOwnProperty(i))
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global.URL[i] = origURL[i];
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}
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}
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}(window));
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});
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