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James Watts
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Migration from SourceForge (2010-01-24)
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‎nano.ajax.js‎

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/*
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* nano Ajax plugin v1.0
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* http://nanojs.org/plugins/ajax
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*
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* Copyright (c) 2008-2015 James Watts
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* https://github.com/jameswatts
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*
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* This is FREE software, licensed under the GPL
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* http://www.gnu.org/licenses/gpl.html
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*/
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if (nano) {
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nano.plugin({
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load: function _load(url, method, params, headers) {
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return nano.ajax[method || 'get'](url || '', params, function() { this.data.node.set(this.response.text); }, null, {node: this}, null, headers);
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},
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send: function _send(url, method, params, headers) {
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return nano.ajax[method || 'post'](url || '', params, function() { this.data.node.set(this.response.text); }, null, {node: this}, null, headers);
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}
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}, function() {
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this.reg({
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load: function(val) {
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this.load(val);
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}
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});
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this.ajax = {
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query: function _query(name) {
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var name = name + '=', url = document.URL;
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return (url.indexOf(name) !== -1)? url.substring(url.indexOf(name)+name.length).split('&', 2)[0] : null;
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},
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request: function _request(url, method, async, params, user, password, headers, data) {
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var obj = {};
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obj.url = url;
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obj.params = params || {};
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obj.method = (typeof method === 'string')? method : 'post';
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obj.async = (nano.isset(async))? true : async;
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obj.user = user || '';
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obj.password = password || '';
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obj.data = data || {};
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obj.request = (window.XMLHttpRequest)? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');
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if (obj.request) {
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if (obj.method.toLowerCase() === 'post') {
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obj.post = '';
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for (var param in obj.params) obj.post += param + '=' + params[param] + '&';
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obj.post = obj.post.substring(0, obj.post.length-1);
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obj.request.open(obj.method, obj.url, obj.async, obj.user, obj.password);
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obj.request.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
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} else {
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url += (url.indexOf('?') === -1)? '?' : '&';
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for (var param in obj.params) url += param + '=' + params[param] + '&';
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obj.request.open(obj.method, url.substring(0, url.length-1), obj.async, obj.user, obj.password);
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}
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if (headers) {
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for (var header in headers) obj.request.setRequestHeader(header, headers[header]);
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}
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return obj;
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} else {
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return false;
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}
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},
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response: function _response(obj, fn, evt) {
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evt = evt || {};
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obj.request.onprogress = function(e) {
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if (typeof evt.progress === 'function') evt.progress.call(obj, e);
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};
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obj.request.onload = function(e) {
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if (typeof evt.load === 'function') evt.load.call(obj, e);
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};
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obj.request.onerror = function(e) {
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if (typeof evt.error === 'function') evt.error.call(obj, e);
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};
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obj.request.onabort = function(e) {
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if (typeof evt.abort === 'function') evt.abort.call(obj, e);
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};
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obj.request.onmessage = function(msg) {
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if (typeof evt.message === 'function') evt.message.call(obj, msg);
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};
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obj.request.onreadystatechange = function(e) {
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if (obj.request.readyState === 4) {
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obj.response = {
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request: obj.request,
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header: function _header(header) {
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return this.request.getResponseHeader(header);
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},
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status: obj.request.status,
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text: obj.request.responseText,
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xml: obj.request.responseXML,
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json: null,
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messages: null
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};
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if (nano.isset(obj.request.getResponseHeader('X-JSON'))) {
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try {
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eval('obj.response.json = ' + obj.request.getResponseHeader('X-JSON') + ';');
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if (nano.type(obj.response.json) !== 'object' && nano.type(obj.response.json) !== 'array') obj.response.json = null;
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} catch (e) {
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obj.response.json = null;
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}
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}
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if (nano.isset(obj.request.getResponseHeader('X-Messages'))) {
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try {
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eval('obj.response.messages = ' + obj.request.getResponseHeader('X-Messages') + ';');
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if (nano.type(obj.response.messages) === 'array') {
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for (var i = 0; i < obj.response.messages.length; i++) {
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if (typeof obj.request.message === 'function') obj.request.message.call(obj, obj.response.messages[i]);
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}
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}
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} catch (e) {
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obj.response.messages = null;
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}
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}
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if (obj.request.status === 200) {
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if (typeof fn === 'function') fn.call(obj);
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} else {
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if (typeof evt.error === 'function') evt.error.call(obj, e);
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}
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}
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};
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obj.request.send((obj.method.toLowerCase() === 'post')? obj.post : null);
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return obj;
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},
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get: function _get(url, params, fn, evt, headers, data) {
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return new this.response(new this.request(url || '/', 'get', true, params, null, null, headers, data), fn, evt);
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},
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post: function _post(url, params, fn, evt, headers, data) {
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return new this.response(new this.request(url || '/', 'post', true, params, null, null, headers, data), fn, evt);
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},
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encode: function _encode(params) {
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var query = [];
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for (var param in params) query.push(encodeURIComponent(param) + '=' + encodeURIComponent(params[param]));
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return query.join('&');
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},
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decode: function _decode(query) {
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query = query.split('&');
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var cut = null;
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var val = null;
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var params = {};
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for (var i = 0; i < query.length; i++) {
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cut = query[i].indexOf('=');
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val = query[i].substring(cut+1);
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params[query[i].substring(0, cut)] = (!isNaN(parseFloat(val)) && isFinite(val))? val-0 : ((val == '')? null : val);
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}
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return params;
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},
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json: function _json(obj) {
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if (typeof obj !== 'object' || obj === null) {
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if (typeof obj === 'string') obj = '"' + obj + '"';
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return new String(obj);
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}
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var json = [];
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var array = (nano.type(obj) === 'array');
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var val = null;
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for (var prop in obj) {
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val = obj[prop];
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if (typeof val === 'string') {
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val = '"' + val.replace(/"/, '\"') + '"';
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} else if (nano.type(val) === 'object' || nano.type(val) === 'array') {
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val = this.serialize(val);
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}
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json.push(((array)? '' : '"' + prop.replace(/"/, '\"') + '":') + String(val).replace(/"/, '\"'));
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}
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return ((array)? '[' : '{') + String(json) + ((array)? ']' : '}');
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},
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parse: function _parse(val) {
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if (val === '') return '""';
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try {
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eval('var obj = ' + val + ';');
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} catch (e) {
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return null;
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}
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return obj;
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}
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};
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});
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}

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