805 lines
24 KiB
JavaScript
805 lines
24 KiB
JavaScript
jQuery.fn.extend({
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/**
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* Load HTML from a remote file and inject it into the DOM, only if it's
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* been modified by the server.
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*
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* @example $("#feeds").loadIfModified("feeds.html")
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* @before <div id="feeds"></div>
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* @result <div id="feeds"><b>45</b> feeds found.</div>
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*
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* @name loadIfModified
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* @type jQuery
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* @param String url The URL of the HTML file to load.
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* @param Hash params A set of key/value pairs that will be sent to the server.
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* @param Function callback A function to be executed whenever the data is loaded.
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* @cat AJAX
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*/
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loadIfModified: function( url, params, callback ) {
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this.load( url, params, callback, 1 );
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},
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/**
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* Load HTML from a remote file and inject it into the DOM.
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*
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* @example $("#feeds").load("feeds.html")
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* @before <div id="feeds"></div>
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* @result <div id="feeds"><b>45</b> feeds found.</div>
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*
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* @example $("#feeds").load("feeds.html",
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* {test: true},
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* function() { alert("load is done"); }
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* );
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* @desc Same as above, but with an additional parameter
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* and a callback that is executed when the data was loaded.
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*
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* @test stop();
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* $('#first').load("data/name.php", function() {
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* ok( $('#first').text() == 'ERROR', 'Check if content was injected into the DOM' );
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* start();
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* });
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*
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* @test stop(); // check if load can be called with only url
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* $('#first').load("data/name.php");
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* setTimeout(function() {
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* ok( $('#first').text() == 'ERROR', 'Check if load works without callback');
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* start();
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* }, 100);
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*
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* @name load
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* @type jQuery
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* @param String url The URL of the HTML file to load.
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* @param Hash params A set of key/value pairs that will be sent to the server.
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* @param Function callback A function to be executed whenever the data is loaded.
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* @cat AJAX
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*/
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load: function( url, params, callback, ifModified ) {
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if ( url.constructor == Function )
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return this.bind("load", url);
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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 ( params.constructor == Function ) {
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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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}
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var self = this;
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// Request the remote document
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jQuery.ajax( type, url, params,function(res, status){
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if ( status == "success" || !ifModified && status == "notmodified" ) {
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// Inject the HTML into all the matched elements
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self.html(res.responseText).each( callback, [res.responseText, status] );
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// Execute all the scripts inside of the newly-injected HTML
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jQuery("script", self).each(function(){
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if ( this.src )
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jQuery.getScript( this.src );
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else
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eval.call( window, this.text || this.textContent || this.innerHTML || "" );
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});
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} else
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callback.apply( self, [res.responseText, status] );
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}, ifModified);
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return this;
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},
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/**
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* Serializes a set of input elements into a string of data.
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* This will serialize all given elements. If you need
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* serialization similar to the form submit of a browser,
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* you should use the form plugin. This is also true for
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* selects with multiple attribute set, only a single option
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* is serialized.
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*
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* @example $("input[@type=text]").serialize();
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* @before <input type='text' name='name' value='John'/>
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* <input type='text' name='location' value='Boston'/>
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* @after name=John&location=Boston
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* @desc Serialize a selection of input elements to a string
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*
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* @test var data = $(':input').not('button').serialize();
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* // ignore button, IE takes text content as value, not relevant for this test
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* ok( data == 'action=Test&text2=Test&radio1=on&radio2=on&check=on&=on&hidden=&foo[bar]=&name=name&=foobar&select1=&select2=3&select3=1', 'Check form serialization as query string' );
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*
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* @name serialize
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* @type String
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* @cat AJAX
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*/
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serialize: function() {
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return jQuery.param( this );
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}
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});
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// If IE is used, create a wrapper for the XMLHttpRequest object
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if ( jQuery.browser.msie && typeof XMLHttpRequest == "undefined" )
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XMLHttpRequest = function(){
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return new ActiveXObject(
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navigator.userAgent.indexOf("MSIE 5") >= 0 ?
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"Microsoft.XMLHTTP" : "Msxml2.XMLHTTP"
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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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/**
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* Attach a function to be executed whenever an AJAX request begins.
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*
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* @example $("#loading").ajaxStart(function(){
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* $(this).show();
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* });
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* @desc Show a loading message whenever an AJAX request starts.
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*
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* @name ajaxStart
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* @type jQuery
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* @param Function callback The function to execute.
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* @cat AJAX
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*/
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/**
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* Attach a function to be executed whenever all AJAX requests have ended.
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*
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* @example $("#loading").ajaxStop(function(){
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* $(this).hide();
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* });
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* @desc Hide a loading message after all the AJAX requests have stopped.
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*
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* @name ajaxStop
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* @type jQuery
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* @param Function callback The function to execute.
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* @cat AJAX
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*/
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/**
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* Attach a function to be executed whenever an AJAX request completes.
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*
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* @example $("#msg").ajaxComplete(function(){
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* $(this).append("<li>Request Complete.</li>");
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* });
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* @desc Show a message when an AJAX request completes.
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*
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* @name ajaxComplete
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* @type jQuery
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* @param Function callback The function to execute.
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* @cat AJAX
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*/
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/**
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* Attach a function to be executed whenever an AJAX request completes
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* successfully.
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*
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* @example $("#msg").ajaxSuccess(function(){
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* $(this).append("<li>Successful Request!</li>");
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* });
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* @desc Show a message when an AJAX request completes successfully.
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*
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* @name ajaxSuccess
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* @type jQuery
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* @param Function callback The function to execute.
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* @cat AJAX
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*/
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/**
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* Attach a function to be executed whenever an AJAX request fails.
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*
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* @example $("#msg").ajaxError(function(){
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* $(this).append("<li>Error requesting page.</li>");
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* });
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* @desc Show a message when an AJAX request fails.
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*
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* @name ajaxError
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* @type jQuery
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* @param Function callback The function to execute.
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* @cat AJAX
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*/
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/**
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* @test stop(); var counter = { complete: 0, success: 0, error: 0 };
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* var success = function() { counter.success++ };
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* var error = function() { counter.error++ };
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* var complete = function() { counter.complete++ };
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* $('#foo').ajaxStart(complete).ajaxStop(complete).ajaxComplete(complete).ajaxError(error).ajaxSuccess(success);
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* // start with successful test
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* $.ajax({url: "data/name.php", success: success, error: error, complete: function() {
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* ok( counter.error == 0, 'Check succesful request' );
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* ok( counter.success == 2, 'Check succesful request' );
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* ok( counter.complete == 3, 'Check succesful request' );
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* counter.error = 0; counter.success = 0; counter.complete = 0;
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* $.ajaxTimeout(500);
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* $.ajax({url: "data/name.php?wait=5", success: success, error: error, complete: function() {
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* ok( counter.error == 2, 'Check failed request' );
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* ok( counter.success == 0, 'Check failed request' );
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* ok( counter.complete == 3, 'Check failed request' );
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* start();
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* }});
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* }});
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* @test stop(); var counter = { complete: 0, success: 0, error: 0 };
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* counter.error = 0; counter.success = 0; counter.complete = 0;
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* var success = function() { counter.success++ };
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* var error = function() { counter.error++ };
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* $.ajaxTimeout(0);
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* $.ajax({url: "data/name.php", global: false, success: success, error: error, complete: function() {
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* ok( counter.error == 0, 'Check sucesful request without globals' );
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* ok( counter.success == 1, 'Check sucesful request without globals' );
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* ok( counter.complete == 0, 'Check sucesful request without globals' );
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* counter.error = 0; counter.success = 0; counter.complete = 0;
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* $.ajaxTimeout(500);
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* $.ajax({url: "data/name.php?wait=5", global: false, success: success, error: error, complete: function() {
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* ok( counter.error == 1, 'Check failed request without globals' );
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* ok( counter.success == 0, 'Check failed request without globals' );
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* ok( counter.complete == 0, 'Check failed request without globals' );
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* start();
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* }});
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* }});
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*
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* @name ajaxHandlersTesting
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* @private
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*/
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new function(){
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var e = "ajaxStart,ajaxStop,ajaxComplete,ajaxError,ajaxSuccess".split(",");
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for ( var i = 0; i < e.length; i++ ) new function(){
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var o = e[i];
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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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};
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jQuery.extend({
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/**
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* Load a remote page using an HTTP GET request. All of the arguments to
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* the method (except URL) are optional.
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*
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* @example $.get("test.cgi")
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*
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* @example $.get("test.cgi", { name: "John", time: "2pm" } )
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*
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* @example $.get("test.cgi", function(data){
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* alert("Data Loaded: " + data);
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* })
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*
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* @example $.get("test.cgi",
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* { name: "John", time: "2pm" },
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* function(data){
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* alert("Data Loaded: " + data);
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* }
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* )
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*
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* @name $.get
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* @type jQuery
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* @param String url The URL of the page to load.
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* @param Hash params A set of key/value pairs that will be sent to the server.
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* @param Function callback A function to be executed whenever the data is loaded.
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* @cat AJAX
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*/
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get: function( url, data, callback, type, ifModified ) {
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if ( data.constructor == Function ) {
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type = callback;
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callback = data;
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data = null;
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}
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// append ? + data or & + data, in case there are already params
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if ( data ) url += ((url.indexOf("?") > -1) ? "&" : "?") + jQuery.param(data);
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// Build and start the HTTP Request
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jQuery.ajax( "GET", url, null, function(r, status) {
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if ( callback ) callback( jQuery.httpData(r,type), status );
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}, ifModified);
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},
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/**
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* Load a remote page using an HTTP GET request, only if it hasn't
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* been modified since it was last retrieved. All of the arguments to
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* the method (except URL) are optional.
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*
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* @example $.getIfModified("test.html")
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*
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* @example $.getIfModified("test.html", { name: "John", time: "2pm" } )
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*
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* @example $.getIfModified("test.cgi", function(data){
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* alert("Data Loaded: " + data);
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* })
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*
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* @example $.getifModified("test.cgi",
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* { name: "John", time: "2pm" },
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* function(data){
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* alert("Data Loaded: " + data);
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* }
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* )
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*
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* @test stop();
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* $.getIfModified("data/name.php", function(msg) {
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* ok( msg == 'ERROR', 'Check ifModified' );
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* start();
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* });
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*
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* @name $.getIfModified
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* @type jQuery
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* @param String url The URL of the page to load.
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* @param Hash params A set of key/value pairs that will be sent to the server.
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* @param Function callback A function to be executed whenever the data is loaded.
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* @cat AJAX
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*/
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getIfModified: function( url, data, callback, type ) {
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jQuery.get(url, data, callback, type, 1);
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},
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/**
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* Loads, and executes, a remote JavaScript file using an HTTP GET request.
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* All of the arguments to the method (except URL) are optional.
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*
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* @example $.getScript("test.js")
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*
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* @example $.getScript("test.js", function(){
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* alert("Script loaded and executed.");
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* })
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*
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* @test stop();
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* $.getScript("data/test.js", function() {
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* ok( foobar == "bar", 'Check if script was evaluated' );
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* start();
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* });
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*
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* @name $.getScript
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* @type jQuery
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* @param String url The URL of the page to load.
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* @param Function callback A function to be executed whenever the data is loaded.
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* @cat AJAX
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*/
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getScript: function( url, callback ) {
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jQuery.get(url, callback, "script");
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},
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/**
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* Load a remote JSON object using an HTTP GET request.
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* All of the arguments to the method (except URL) are optional.
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*
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* @example $.getJSON("test.js", function(json){
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* alert("JSON Data: " + json.users[3].name);
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* })
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*
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* @example $.getJSON("test.js",
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* { name: "John", time: "2pm" },
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* function(json){
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* alert("JSON Data: " + json.users[3].name);
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* }
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* )
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*
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* @test stop();
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* $.getJSON("data/json.php", {json: "array"}, function(json) {
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* ok( json[0].name == 'John', 'Check JSON: first, name' );
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* ok( json[0].age == 21, 'Check JSON: first, age' );
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* ok( json[1].name == 'Peter', 'Check JSON: second, name' );
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* ok( json[1].age == 25, 'Check JSON: second, age' );
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* start();
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* });
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* @test stop();
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* $.getJSON("data/json.php", function(json) {
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* ok( json.data.lang == 'en', 'Check JSON: lang' );
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* ok( json.data.length == 25, 'Check JSON: length' );
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* start();
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* });
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*
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* @name $.getJSON
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* @type jQuery
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* @param String url The URL of the page to load.
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* @param Hash params A set of key/value pairs that will be sent to the server.
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* @param Function callback A function to be executed whenever the data is loaded.
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* @cat AJAX
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*/
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getJSON: function( url, data, callback ) {
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if(callback)
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jQuery.get(url, data, callback, "json");
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else {
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jQuery.get(url, data, "json");
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}
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},
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/**
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* Load a remote page using an HTTP POST request. All of the arguments to
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* the method (except URL) are optional.
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*
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* @example $.post("test.cgi")
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*
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* @example $.post("test.cgi", { name: "John", time: "2pm" } )
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*
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* @example $.post("test.cgi", function(data){
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* alert("Data Loaded: " + data);
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* })
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*
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* @example $.post("test.cgi",
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* { name: "John", time: "2pm" },
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* function(data){
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* alert("Data Loaded: " + data);
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* }
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* )
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*
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* @test stop();
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* $.post("data/name.php", {xml: "5-2"}, function(xml){
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* $('math', xml).each(function() {
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* ok( $('calculation', this).text() == '5-2', 'Check for XML' );
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* ok( $('result', this).text() == '3', 'Check for XML' );
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* });
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* start();
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* });
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*
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* @name $.post
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* @type jQuery
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* @param String url The URL of the page to load.
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* @param Hash params A set of key/value pairs that will be sent to the server.
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* @param Function callback A function to be executed whenever the data is loaded.
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* @cat AJAX
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*/
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post: function( url, data, callback, type ) {
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// Build and start the HTTP Request
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jQuery.ajax( "POST", url, jQuery.param(data), function(r, status) {
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if ( callback ) callback( jQuery.httpData(r,type), status );
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});
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},
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// timeout (ms)
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timeout: 0,
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/**
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* Set the timeout of all AJAX requests to a specific amount of time.
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* This will make all future AJAX requests timeout after a specified amount
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* of time (the default is no timeout).
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*
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* @example $.ajaxTimeout( 5000 );
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* @desc Make all AJAX requests timeout after 5 seconds.
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*
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* @test stop();
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* var passed = 0;
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* var timeout;
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* $.ajaxTimeout(1000);
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* var pass = function() {
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* passed++;
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* if(passed == 2) {
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* ok( true, 'Check local and global callbacks after timeout' );
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* clearTimeout(timeout);
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* $('#main').unbind("ajaxError");
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* start();
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* }
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* };
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* var fail = function() {
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* ok( false, 'Check for timeout failed' );
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* start();
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* };
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* timeout = setTimeout(fail, 1500);
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* $('#main').ajaxError(pass);
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* $.ajax({
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* type: "GET",
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* url: "data/name.php?wait=5",
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* error: pass,
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* success: fail
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* });
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*
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* @test stop(); $.ajaxTimeout(50);
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* $.ajax({
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* type: "GET",
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* timeout: 5000,
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* url: "data/name.php?wait=1",
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* error: function() {
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* ok( false, 'Check for local timeout failed' );
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* start();
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* },
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* success: function() {
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* ok( true, 'Check for local timeout' );
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* start();
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* }
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* });
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* // reset timeout
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* $.ajaxTimeout(0);
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*
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*
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* @name $.ajaxTimeout
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* @type jQuery
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* @param Number time How long before an AJAX request times out.
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* @cat AJAX
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*/
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ajaxTimeout: function(timeout) {
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jQuery.timeout = timeout;
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},
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// Last-Modified header cache for next request
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lastModified: {},
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/**
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* Load a remote page using an HTTP request. This function is the primary
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* means of making AJAX requests using jQuery. $.ajax() takes one property,
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* an object of key/value pairs, that're are used to initalize the request.
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*
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* These are all the key/values that can be passed in to 'prop':
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*
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* (String) type - The type of request to make (e.g. "POST" or "GET").
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*
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* (String) url - The URL of the page to request.
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*
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* (String) data - A string of data to be sent to the server (POST only).
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*
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* (String) dataType - The type of data that you're expecting back from
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* the server (e.g. "xml", "html", "script", or "json").
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*
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* (Boolean) ifModified - Allow the request to be successful only if the
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* response has changed since the last request, default is false, ignoring
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* the Last-Modified header
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*
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* (Number) timeout - Local timeout to override global timeout, eg. to give a
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* single request a longer timeout while all others timeout after 1 seconds,
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* see $.ajaxTimeout
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*
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* (Boolean) global - Wheather to trigger global AJAX event handlers for
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* this request, default is true. Set to true to prevent that global handlers
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* like ajaxStart or ajaxStop are triggered.
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*
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* (Function) error - A function to be called if the request fails. The
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* function gets passed two arguments: The XMLHttpRequest object and a
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* string describing the type of error that occurred.
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*
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* (Function) success - A function to be called if the request succeeds. The
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* function gets passed one argument: The data returned from the server,
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* formatted according to the 'dataType' parameter.
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*
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* (Function) complete - A function to be called when the request finishes. The
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* function gets passed two arguments: The XMLHttpRequest object and a
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* string describing the type the success of the request.
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*
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* @example $.ajax({
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* type: "GET",
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* url: "test.js",
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* dataType: "script"
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* })
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* @desc Load and execute a JavaScript file.
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*
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* @example $.ajax({
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* type: "POST",
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* url: "some.php",
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* data: "name=John&location=Boston",
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* success: function(msg){
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* alert( "Data Saved: " + msg );
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* }
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* });
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* @desc Save some data to the server and notify the user once its complete.
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*
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* @test stop();
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* $.ajax({
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* type: "GET",
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* url: "data/name.php?name=foo",
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* success: function(msg){
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* ok( msg == 'bar', 'Check for GET' );
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* start();
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* }
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* });
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*
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* @test stop();
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* $.ajax({
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* type: "POST",
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* url: "data/name.php",
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* data: "name=peter",
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* success: function(msg){
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* ok( msg == 'pan', 'Check for POST' );
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* start();
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* }
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* });
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*
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* @name $.ajax
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* @type jQuery
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* @param Hash prop A set of properties to initialize the request with.
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* @cat AJAX
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*/
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ajax: function( type, url, data, ret, ifModified ) {
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// If only a single argument was passed in,
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// assume that it is a object of key/value pairs
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if ( !url ) {
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ret = type.complete;
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var success = type.success;
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var error = type.error;
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var dataType = type.dataType;
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var global = typeof type.global == "boolean" ? type.global : true;
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var timeout = typeof type.timeout == "number" ? type.timeout : jQuery.timeout;
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var ifModified = type.ifModified || false;
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data = type.data;
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url = type.url;
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type = type.type;
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}
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// Watch for a new set of requests
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if ( global && ! jQuery.active++ )
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jQuery.event.trigger( "ajaxStart" );
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var requestDone = false;
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// Create the request object
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var xml = new XMLHttpRequest();
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// Open the socket
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xml.open(type || "GET", url, true);
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// Set the correct header, if data is being sent
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if ( data )
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xml.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
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// Set the If-Modified-Since header, if ifModified mode.
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if ( ifModified )
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xml.setRequestHeader("If-Modified-Since",
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jQuery.lastModified[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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// Make sure the browser sends the right content length
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if ( xml.overrideMimeType )
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xml.setRequestHeader("Connection", "close");
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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 ( xml && (xml.readyState == 4 || istimeout == "timeout") ) {
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requestDone = true;
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var status = jQuery.httpSuccess( xml ) && istimeout != "timeout" ?
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ifModified && jQuery.httpNotModified( xml, url ) ? "notmodified" : "success" : "error";
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// Make sure that the request was successful or notmodified
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if ( status != "error" ) {
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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 ( ifModified && modRes )
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jQuery.lastModified[url] = modRes;
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// If a local callback was specified, fire it
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if ( success )
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success( jQuery.httpData( xml, dataType ), status );
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// Fire the global callback
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if( global )
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jQuery.event.trigger( "ajaxSuccess" );
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// Otherwise, the request was not successful
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} else {
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// If a local callback was specified, fire it
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if ( error ) error( xml, status );
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|
// Fire the global callback
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if( global )
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jQuery.event.trigger( "ajaxError" );
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}
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// The request was completed
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|
if( global )
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|
jQuery.event.trigger( "ajaxComplete" );
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|
// Handle the global AJAX counter
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|
if ( global && ! --jQuery.active )
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jQuery.event.trigger( "ajaxStop" );
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// Process result
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|
if ( ret ) ret(xml, status);
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// Stop memory leaks
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|
xml.onreadystatechange = function(){};
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xml = null;
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}
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};
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xml.onreadystatechange = onreadystatechange;
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// Timeout checker
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|
if(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 ) onreadystatechange( "timeout" );
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// Clear from memory
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xml = null;
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}
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}, timeout);
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|
// Send the data
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|
xml.send(data);
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|
},
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|
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|
// Counter for holding the number of active queries
|
|
active: 0,
|
|
|
|
// Determines if an XMLHttpRequest was successful or not
|
|
httpSuccess: function(r) {
|
|
try {
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|
return !r.status && location.protocol == "file:" ||
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( r.status >= 200 && r.status < 300 ) || r.status == 304 ||
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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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|
},
|
|
|
|
// Determines if an XMLHttpRequest returns NotModified
|
|
httpNotModified: function(xml, url) {
|
|
try {
|
|
var xmlRes = xml.getResponseHeader("Last-Modified");
|
|
|
|
// 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;
|
|
} catch(e){}
|
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|
|
return false;
|
|
},
|
|
|
|
/* Get the data out of an XMLHttpRequest.
|
|
* Return parsed XML if content-type header is "xml" and type is "xml" or omitted,
|
|
* otherwise return plain text.
|
|
* (String) data - The type of data that you're expecting back,
|
|
* (e.g. "xml", "html", "script")
|
|
*/
|
|
httpData: function(r,type) {
|
|
var ct = r.getResponseHeader("content-type");
|
|
var data = !type && ct && ct.indexOf("xml") >= 0;
|
|
data = type == "xml" || data ? r.responseXML : r.responseText;
|
|
|
|
// If the type is "script", eval it
|
|
if ( type == "script" ) eval.call( window, data );
|
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|
|
// Get the JavaScript object, if JSON is used.
|
|
if ( type == "json" ) eval( "data = " + data );
|
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|
|
return data;
|
|
},
|
|
|
|
// Serialize an array of form elements or a set of
|
|
// key/values into a query string
|
|
param: function(a) {
|
|
var s = [];
|
|
|
|
// If an array was passed in, assume that it is an array
|
|
// of form elements
|
|
if ( a.constructor == Array || a.jquery ) {
|
|
// Serialize the form elements
|
|
for ( var i = 0; i < a.length; i++ )
|
|
s.push( a[i].name + "=" + encodeURIComponent( a[i].value ) );
|
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|
|
// Otherwise, assume that it's an object of key/value pairs
|
|
} else {
|
|
// Serialize the key/values
|
|
for ( var j in a )
|
|
s.push( j + "=" + encodeURIComponent( a[j] ) );
|
|
}
|
|
|
|
// Return the resulting serialization
|
|
return s.join("&");
|
|
}
|
|
|
|
});
|