Maximum CD 2011 July/maximum-cd-2011-07.iso/DiscContents/audacity-win-unicode-1.3.13.exe/{app}/help/manual/m/skins/common/ajax.js/207

Text File | 2011-04-06 | 4.7 KB | 168 lines

// remote scripting library
// (c) copyright 2005 modernmethod, inc
var sajax_debug_mode = false;
var sajax_request_type = "GET";

/**
* if sajax_debug_mode is true, this function outputs given the message into
* the element with id = sajax_debug; if no such element exists in the document,
* it is injected.
*/
function sajax_debug(text) {
    if (!sajax_debug_mode) return false;

    var e= document.getElementById('sajax_debug');

    if (!e) {
        e= document.createElement("p");
        e.className= 'sajax_debug';
        e.id= 'sajax_debug';

        var b= document.getElementsByTagName("body")[0];

        if (b.firstChild) b.insertBefore(e, b.firstChild);
        else b.appendChild(e);
    }

    var m= document.createElement("div");
    m.appendChild( document.createTextNode( text ) );

    e.appendChild( m );

    return true;
}

/**
* compatibility wrapper for creating a new XMLHttpRequest object.
*/
function sajax_init_object() {
    sajax_debug("sajax_init_object() called..")
    var A;
    try {
        // Try the new style before ActiveX so we don't
        // unnecessarily trigger warnings in IE 7 when
        // set to prompt about ActiveX usage
        A = new XMLHttpRequest();
    } catch (e) {
        try {
            A=new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
                A=new ActiveXObject("Microsoft.XMLHTTP");
            } catch (oc) {
                A=null;
            }
        }
    }
    if (!A)
        sajax_debug("Could not create connection object.");

    return A;
}

/**
* Perform an ajax call to mediawiki. Calls are handeled by AjaxDispatcher.php
*   func_name - the name of the function to call. Must be registered in $wgAjaxExportList
*   args - an array of arguments to that function
*   target - the target that will handle the result of the call. If this is a function,
*            if will be called with the XMLHttpRequest as a parameter; if it's an input
*            element, its value will be set to the resultText; if it's another type of
*            element, its innerHTML will be set to the resultText.
*
* Example:
*    sajax_do_call('doFoo', [1, 2, 3], document.getElementById("showFoo"));
*
* This will call the doFoo function via MediaWiki's AjaxDispatcher, with
* (1, 2, 3) as the parameter list, and will show the result in the element
* with id = showFoo
*/
function sajax_do_call(func_name, args, target) {
    var i, x, n;
    var uri;
    var post_data;
    uri = wgServer +
        ((wgScript == null) ? (wgScriptPath + "/index.php") : wgScript) +
        "?action=ajax";
    if (sajax_request_type == "GET") {
        if (uri.indexOf("?") == -1)
            uri = uri + "?rs=" + encodeURIComponent(func_name);
        else
            uri = uri + "&rs=" + encodeURIComponent(func_name);
        for (i = 0; i < args.length; i++)
            uri = uri + "&rsargs[]=" + encodeURIComponent(args[i]);
        //uri = uri + "&rsrnd=" + new Date().getTime();
        post_data = null;
    } else {
        post_data = "rs=" + encodeURIComponent(func_name);
        for (i = 0; i < args.length; i++)
            post_data = post_data + "&rsargs[]=" + encodeURIComponent(args[i]);
    }
    x = sajax_init_object();
    if (!x) {
        alert("AJAX not supported");
        return false;
    }

    try {
        x.open(sajax_request_type, uri, true);
    } catch (e) {
        if (window.location.hostname == "localhost") {
            alert("Your browser blocks XMLHttpRequest to 'localhost', try using a real hostname for development/testing.");
        }
        throw e;
    }
    if (sajax_request_type == "POST") {
        x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");
        x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    }
    x.setRequestHeader("Pragma", "cache=yes");
    x.setRequestHeader("Cache-Control", "no-transform");
    x.onreadystatechange = function() {
        if (x.readyState != 4)
            return;

        sajax_debug("received (" + x.status + " " + x.statusText + ") " + x.responseText);

        //if (x.status != 200)
        //    alert("Error: " + x.status + " " + x.statusText + ": " + x.responseText);
        //else

        if ( typeof( target ) == 'function' ) {
            target( x );
        }
        else if ( typeof( target ) == 'object' ) {
            if ( target.tagName == 'INPUT' ) {
                if (x.status == 200) target.value= x.responseText;
                //else alert("Error: " + x.status + " " + x.statusText + " (" + x.responseText + ")");
            }
            else {
                if (x.status == 200) target.innerHTML = x.responseText;
                else target.innerHTML= "<div class='error'>Error: " + x.status + " " + x.statusText + " (" + x.responseText + ")</div>";
            }
        }
        else {
            alert("bad target for sajax_do_call: not a function or object: " + target);
        }

        return;
    }

    sajax_debug(func_name + " uri = " + uri + " / post = " + post_data);
    x.send(post_data);
    sajax_debug(func_name + " waiting..");
    delete x;

    return true;
}

/**
 * @return boolean whether the browser supports XMLHttpRequest
 */
function wfSupportsAjax() {
    var request = sajax_init_object();
    var supportsAjax = request ? true : false;
    delete request;
    return supportsAjax;
}