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Update doc/
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brenosilva
167
doc/Reference_Manual_files/ajax.js
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167
doc/Reference_Manual_files/ajax.js
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// remote scripting library
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// (c) copyright 2005 modernmethod, inc
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var sajax_debug_mode = false;
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var sajax_request_type = "GET";
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/**
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* if sajax_debug_mode is true, this function outputs given the message into
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* the element with id = sajax_debug; if no such element exists in the document,
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* it is injected.
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*/
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function sajax_debug(text) {
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if (!sajax_debug_mode) return false;
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var e= document.getElementById('sajax_debug');
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if (!e) {
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e= document.createElement("p");
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e.className= 'sajax_debug';
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e.id= 'sajax_debug';
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var b= document.getElementsByTagName("body")[0];
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if (b.firstChild) b.insertBefore(e, b.firstChild);
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else b.appendChild(e);
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}
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var m= document.createElement("div");
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m.appendChild( document.createTextNode( text ) );
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e.appendChild( m );
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return true;
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}
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/**
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* compatibility wrapper for creating a new XMLHttpRequest object.
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*/
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function sajax_init_object() {
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sajax_debug("sajax_init_object() called..")
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var A;
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try {
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// Try the new style before ActiveX so we don't
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// unnecessarily trigger warnings in IE 7 when
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// set to prompt about ActiveX usage
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A = new XMLHttpRequest();
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} catch (e) {
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try {
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A=new ActiveXObject("Msxml2.XMLHTTP");
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} catch (e) {
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try {
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A=new ActiveXObject("Microsoft.XMLHTTP");
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} catch (oc) {
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A=null;
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}
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}
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}
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if (!A)
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sajax_debug("Could not create connection object.");
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return A;
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}
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/**
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* Perform an ajax call to mediawiki. Calls are handeled by AjaxDispatcher.php
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* func_name - the name of the function to call. Must be registered in $wgAjaxExportList
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* args - an array of arguments to that function
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* target - the target that will handle the result of the call. If this is a function,
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* if will be called with the XMLHttpRequest as a parameter; if it's an input
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* element, its value will be set to the resultText; if it's another type of
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* element, its innerHTML will be set to the resultText.
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*
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* Example:
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* sajax_do_call('doFoo', [1, 2, 3], document.getElementById("showFoo"));
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*
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* This will call the doFoo function via MediaWiki's AjaxDispatcher, with
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* (1, 2, 3) as the parameter list, and will show the result in the element
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* with id = showFoo
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*/
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function sajax_do_call(func_name, args, target) {
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var i, x, n;
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var uri;
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var post_data;
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uri = wgServer +
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((wgScript == null) ? (wgScriptPath + "/index.php") : wgScript) +
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"?action=ajax";
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if (sajax_request_type == "GET") {
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if (uri.indexOf("?") == -1)
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uri = uri + "?rs=" + encodeURIComponent(func_name);
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else
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uri = uri + "&rs=" + encodeURIComponent(func_name);
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for (i = 0; i < args.length; i++)
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uri = uri + "&rsargs[]=" + encodeURIComponent(args[i]);
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//uri = uri + "&rsrnd=" + new Date().getTime();
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post_data = null;
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} else {
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post_data = "rs=" + encodeURIComponent(func_name);
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for (i = 0; i < args.length; i++)
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post_data = post_data + "&rsargs[]=" + encodeURIComponent(args[i]);
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}
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x = sajax_init_object();
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if (!x) {
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alert("AJAX not supported");
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return false;
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}
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try {
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x.open(sajax_request_type, uri, true);
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} catch (e) {
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if (window.location.hostname == "localhost") {
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alert("Your browser blocks XMLHttpRequest to 'localhost', try using a real hostname for development/testing.");
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}
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throw e;
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}
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if (sajax_request_type == "POST") {
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x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");
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x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
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}
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x.setRequestHeader("Pragma", "cache=yes");
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x.setRequestHeader("Cache-Control", "no-transform");
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x.onreadystatechange = function() {
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if (x.readyState != 4)
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return;
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sajax_debug("received (" + x.status + " " + x.statusText + ") " + x.responseText);
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//if (x.status != 200)
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// alert("Error: " + x.status + " " + x.statusText + ": " + x.responseText);
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//else
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if ( typeof( target ) == 'function' ) {
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target( x );
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}
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else if ( typeof( target ) == 'object' ) {
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if ( target.tagName == 'INPUT' ) {
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if (x.status == 200) target.value= x.responseText;
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//else alert("Error: " + x.status + " " + x.statusText + " (" + x.responseText + ")");
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}
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else {
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if (x.status == 200) target.innerHTML = x.responseText;
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else target.innerHTML= "<div class='error'>Error: " + x.status + " " + x.statusText + " (" + x.responseText + ")</div>";
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}
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}
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else {
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alert("bad target for sajax_do_call: not a function or object: " + target);
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}
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return;
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}
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sajax_debug(func_name + " uri = " + uri + " / post = " + post_data);
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x.send(post_data);
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sajax_debug(func_name + " waiting..");
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delete x;
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return true;
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}
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/**
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* @return boolean whether the browser supports XMLHttpRequest
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*/
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function wfSupportsAjax() {
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var request = sajax_init_object();
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var supportsAjax = request ? true : false;
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delete request;
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return supportsAjax;
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}
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