494 lines
13 KiB
JavaScript
494 lines
13 KiB
JavaScript
jQuery.fn.extend({
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load: function( url, params, callback ) {
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if ( jQuery.isFunction( url ) )
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return this.bind("load", url);
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var off = url.indexOf(" ");
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if ( off >= 0 ) {
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var selector = url.slice(off, url.length);
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url = url.slice(0, off);
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}
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callback = callback || function(){};
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// Default to a GET request
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var type = "GET";
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// If the second parameter was provided
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if ( params )
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// If it's a function
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if ( jQuery.isFunction( params ) ) {
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// We assume that it's the callback
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callback = params;
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params = null;
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// Otherwise, build a param string
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} else {
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params = jQuery.param( params );
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type = "POST";
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}
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var self = this;
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// Request the remote document
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jQuery.ajax({
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url: url,
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type: type,
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dataType: "html",
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data: params,
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complete: function(res, status){
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// If successful, inject the HTML into all the matched elements
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if ( status == "success" || status == "notmodified" )
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// See if a selector was specified
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self.html( selector ?
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// Create a dummy div to hold the results
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jQuery("<div/>")
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// inject the contents of the document in, removing the scripts
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// to avoid any 'Permission Denied' errors in IE
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.append(res.responseText.replace(/<script(.|\s)*?\/script>/g, ""))
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// Locate the specified elements
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.find(selector) :
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// If not, just inject the full result
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res.responseText );
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self.each( callback, [res.responseText, status, res] );
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}
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});
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return this;
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},
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serialize: function() {
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return jQuery.param(this.serializeArray());
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},
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serializeArray: function() {
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return this.map(function(){
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return jQuery.nodeName(this, "form") ?
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jQuery.makeArray(this.elements) : this;
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})
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.filter(function(){
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return this.name && !this.disabled &&
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(this.checked || /select|textarea/i.test(this.nodeName) ||
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/text|hidden|password/i.test(this.type));
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})
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.map(function(i, elem){
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var val = jQuery(this).val();
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return val == null ? null :
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val.constructor == Array ?
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jQuery.map( val, function(val, i){
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return {name: elem.name, value: val};
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}) :
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{name: elem.name, value: val};
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}).get();
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}
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});
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// Attach a bunch of functions for handling common AJAX events
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jQuery.each( "ajaxStart,ajaxStop,ajaxComplete,ajaxError,ajaxSuccess,ajaxSend".split(","), function(i,o){
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jQuery.fn[o] = function(f){
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return this.bind(o, f);
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};
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});
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var jsc = (new Date).getTime();
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jQuery.extend({
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get: function( url, data, callback, type ) {
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// shift arguments if data argument was ommited
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if ( jQuery.isFunction( data ) ) {
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callback = data;
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data = null;
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}
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return jQuery.ajax({
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type: "GET",
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url: url,
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data: data,
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success: callback,
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dataType: type
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});
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},
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getScript: function( url, callback ) {
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return jQuery.get(url, null, callback, "script");
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},
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getJSON: function( url, data, callback ) {
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return jQuery.get(url, data, callback, "json");
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},
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post: function( url, data, callback, type ) {
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if ( jQuery.isFunction( data ) ) {
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callback = data;
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data = {};
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}
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return jQuery.ajax({
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type: "POST",
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url: url,
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data: data,
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success: callback,
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dataType: type
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});
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},
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ajaxSetup: function( settings ) {
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jQuery.extend( jQuery.ajaxSettings, settings );
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},
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ajaxSettings: {
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global: true,
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type: "GET",
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timeout: 0,
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contentType: "application/x-www-form-urlencoded",
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processData: true,
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async: true,
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data: null,
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username: null,
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password: null,
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accepts: {
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xml: "application/xml, text/xml",
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html: "text/html",
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script: "text/javascript, application/javascript",
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json: "application/json, text/javascript",
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text: "text/plain",
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_default: "*/*"
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}
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},
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// Last-Modified header cache for next request
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lastModified: {},
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ajax: function( s ) {
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var jsonp, jsre = /=\?(&|$)/g, status, data;
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// Extend the settings, but re-extend 's' so that it can be
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// checked again later (in the test suite, specifically)
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s = jQuery.extend(true, s, jQuery.extend(true, {}, jQuery.ajaxSettings, s));
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// convert data if not already a string
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if ( s.data && s.processData && typeof s.data != "string" )
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s.data = jQuery.param(s.data);
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// Handle JSONP Parameter Callbacks
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if ( s.dataType == "jsonp" ) {
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if ( s.type.toLowerCase() == "get" ) {
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if ( !s.url.match(jsre) )
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s.url += (s.url.match(/\?/) ? "&" : "?") + (s.jsonp || "callback") + "=?";
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} else if ( !s.data || !s.data.match(jsre) )
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s.data = (s.data ? s.data + "&" : "") + (s.jsonp || "callback") + "=?";
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s.dataType = "json";
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}
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// Build temporary JSONP function
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if ( s.dataType == "json" && (s.data && s.data.match(jsre) || s.url.match(jsre)) ) {
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jsonp = "jsonp" + jsc++;
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// Replace the =? sequence both in the query string and the data
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if ( s.data )
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s.data = (s.data + "").replace(jsre, "=" + jsonp + "$1");
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s.url = s.url.replace(jsre, "=" + jsonp + "$1");
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// We need to make sure
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// that a JSONP style response is executed properly
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s.dataType = "script";
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// Handle JSONP-style loading
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window[ jsonp ] = function(tmp){
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data = tmp;
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success();
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complete();
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// Garbage collect
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window[ jsonp ] = undefined;
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try{ delete window[ jsonp ]; } catch(e){}
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if ( head )
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head.removeChild( script );
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};
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}
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if ( s.dataType == "script" && s.cache == null )
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s.cache = false;
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if ( s.cache === false && s.type.toLowerCase() == "get" ) {
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var ts = (new Date()).getTime();
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// try replacing _= if it is there
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var ret = s.url.replace(/(\?|&)_=.*?(&|$)/, "$1_=" + ts + "$2");
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// if nothing was replaced, add timestamp to the end
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s.url = ret + ((ret == s.url) ? (s.url.match(/\?/) ? "&" : "?") + "_=" + ts : "");
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}
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// If data is available, append data to url for get requests
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if ( s.data && s.type.toLowerCase() == "get" ) {
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s.url += (s.url.match(/\?/) ? "&" : "?") + s.data;
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// IE likes to send both get and post data, prevent this
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s.data = null;
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}
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// Watch for a new set of requests
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if ( s.global && ! jQuery.active++ )
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jQuery.event.trigger( "ajaxStart" );
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// If we're requesting a remote document
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// and trying to load JSON or Script with a GET
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if ( (!s.url.indexOf("http") || !s.url.indexOf("//")) && s.dataType == "script" && s.type.toLowerCase() == "get" ) {
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var head = document.getElementsByTagName("head")[0];
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var script = document.createElement("script");
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script.src = s.url;
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if (s.scriptCharset)
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script.charset = s.scriptCharset;
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// Handle Script loading
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if ( !jsonp ) {
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var done = false;
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// Attach handlers for all browsers
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script.onload = script.onreadystatechange = function(){
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if ( !done && (!this.readyState ||
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this.readyState == "loaded" || this.readyState == "complete") ) {
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done = true;
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success();
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complete();
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head.removeChild( script );
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}
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};
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}
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head.appendChild(script);
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// We handle everything using the script element injection
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return undefined;
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}
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var requestDone = false;
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// Create the request object; Microsoft failed to properly
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// implement the XMLHttpRequest in IE7, so we use the ActiveXObject when it is available
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var xml = window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : new XMLHttpRequest();
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// Open the socket
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xml.open(s.type, s.url, s.async, s.username, s.password);
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// Need an extra try/catch for cross domain requests in Firefox 3
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try {
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// Set the correct header, if data is being sent
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if ( s.data )
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xml.setRequestHeader("Content-Type", s.contentType);
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// Set the If-Modified-Since header, if ifModified mode.
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if ( s.ifModified )
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xml.setRequestHeader("If-Modified-Since",
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jQuery.lastModified[s.url] || "Thu, 01 Jan 1970 00:00:00 GMT" );
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// Set header so the called script knows that it's an XMLHttpRequest
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xml.setRequestHeader("X-Requested-With", "XMLHttpRequest");
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// Set the Accepts header for the server, depending on the dataType
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xml.setRequestHeader("Accept", s.dataType && s.accepts[ s.dataType ] ?
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s.accepts[ s.dataType ] + ", */*" :
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s.accepts._default );
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} catch(e){}
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// Allow custom headers/mimetypes
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if ( s.beforeSend )
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s.beforeSend(xml);
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if ( s.global )
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jQuery.event.trigger("ajaxSend", [xml, s]);
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// Wait for a response to come back
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var onreadystatechange = function(isTimeout){
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// The transfer is complete and the data is available, or the request timed out
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if ( !requestDone && xml && (xml.readyState == 4 || isTimeout == "timeout") ) {
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requestDone = true;
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// clear poll interval
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if (ival) {
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clearInterval(ival);
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ival = null;
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}
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status = isTimeout == "timeout" && "timeout" ||
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!jQuery.httpSuccess( xml ) && "error" ||
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s.ifModified && jQuery.httpNotModified( xml, s.url ) && "notmodified" ||
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"success";
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if ( status == "success" ) {
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// Watch for, and catch, XML document parse errors
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try {
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// process the data (runs the xml through httpData regardless of callback)
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data = jQuery.httpData( xml, s.dataType );
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} catch(e) {
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status = "parsererror";
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}
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}
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// Make sure that the request was successful or notmodified
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if ( status == "success" ) {
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// Cache Last-Modified header, if ifModified mode.
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var modRes;
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try {
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modRes = xml.getResponseHeader("Last-Modified");
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} catch(e) {} // swallow exception thrown by FF if header is not available
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if ( s.ifModified && modRes )
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jQuery.lastModified[s.url] = modRes;
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// JSONP handles its own success callback
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if ( !jsonp )
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success();
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} else
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jQuery.handleError(s, xml, status);
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// Fire the complete handlers
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complete();
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// Stop memory leaks
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if ( s.async )
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xml = null;
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}
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};
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if ( s.async ) {
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// don't attach the handler to the request, just poll it instead
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var ival = setInterval(onreadystatechange, 13);
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// Timeout checker
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if ( s.timeout > 0 )
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setTimeout(function(){
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// Check to see if the request is still happening
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if ( xml ) {
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// Cancel the request
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xml.abort();
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if( !requestDone )
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onreadystatechange( "timeout" );
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}
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}, s.timeout);
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}
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// Send the data
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try {
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xml.send(s.data);
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} catch(e) {
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jQuery.handleError(s, xml, null, e);
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}
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// firefox 1.5 doesn't fire statechange for sync requests
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if ( !s.async )
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onreadystatechange();
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function success(){
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// If a local callback was specified, fire it and pass it the data
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if ( s.success )
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s.success( data, status );
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// Fire the global callback
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if ( s.global )
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jQuery.event.trigger( "ajaxSuccess", [xml, s] );
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}
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function complete(){
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// Process result
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if ( s.complete )
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s.complete(xml, status);
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// The request was completed
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if ( s.global )
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jQuery.event.trigger( "ajaxComplete", [xml, s] );
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// Handle the global AJAX counter
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if ( s.global && ! --jQuery.active )
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jQuery.event.trigger( "ajaxStop" );
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}
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// return XMLHttpRequest to allow aborting the request etc.
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return xml;
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},
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handleError: function( s, xml, status, e ) {
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// If a local callback was specified, fire it
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if ( s.error ) s.error( xml, status, e );
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// Fire the global callback
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if ( s.global )
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jQuery.event.trigger( "ajaxError", [xml, s, e] );
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},
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// Counter for holding the number of active queries
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active: 0,
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// Determines if an XMLHttpRequest was successful or not
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httpSuccess: function( r ) {
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try {
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// IE error sometimes returns 1223 when it should be 204 so treat it as success, see #1450
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return !r.status && location.protocol == "file:" ||
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( r.status >= 200 && r.status < 300 ) || r.status == 304 || r.status == 1223 ||
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jQuery.browser.safari && r.status == undefined;
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} catch(e){}
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return false;
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},
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// Determines if an XMLHttpRequest returns NotModified
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httpNotModified: function( xml, url ) {
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try {
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var xmlRes = xml.getResponseHeader("Last-Modified");
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// Firefox always returns 200. check Last-Modified date
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return xml.status == 304 || xmlRes == jQuery.lastModified[url] ||
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jQuery.browser.safari && xml.status == undefined;
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} catch(e){}
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return false;
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},
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httpData: function( r, type ) {
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var ct = r.getResponseHeader("content-type");
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var xml = type == "xml" || !type && ct && ct.indexOf("xml") >= 0;
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var data = xml ? r.responseXML : r.responseText;
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if ( xml && data.documentElement.tagName == "parsererror" )
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throw "parsererror";
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// If the type is "script", eval it in global context
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if ( type == "script" )
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jQuery.globalEval( data );
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// Get the JavaScript object, if JSON is used.
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if ( type == "json" )
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data = eval("(" + data + ")");
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return data;
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},
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// Serialize an array of form elements or a set of
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// key/values into a query string
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param: function( a ) {
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var s = [];
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// If an array was passed in, assume that it is an array
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// of form elements
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if ( a.constructor == Array || a.jquery )
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// Serialize the form elements
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jQuery.each( a, function(){
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s.push( encodeURIComponent(this.name) + "=" + encodeURIComponent( this.value ) );
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});
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// Otherwise, assume that it's an object of key/value pairs
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else
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// Serialize the key/values
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for ( var j in a )
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// If the value is an array then the key names need to be repeated
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if ( a[j] && a[j].constructor == Array )
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jQuery.each( a[j], function(){
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s.push( encodeURIComponent(j) + "=" + encodeURIComponent( this ) );
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});
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else
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s.push( encodeURIComponent(j) + "=" + encodeURIComponent( a[j] ) );
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// Return the resulting serialization
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return s.join("&").replace(/%20/g, "+");
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}
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});
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