Current File : //data/www_bck/varak.net_bck/havranipapuce.varak.net/skins/common/ajax.js
// remote scripting library
// (c) copyright 2005 modernmethod, inc
window.sajax_debug_mode = false;
window.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.
*/
window.sajax_debug = function(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.
*/
window.sajax_init_object = function() {
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 handled 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
*/
window.sajax_do_call = function(func_name, args, target) {
var i, x, n;
var uri;
var post_data;
uri = mw.util.wikiScript() + '?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 );
}
};
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
*/
window.wfSupportsAjax = function() {
var request = sajax_init_object();
var supportsAjax = request ? true : false;
delete request;
return supportsAjax;
};
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