jquery/ajax/ajax.js
Gilles van den Hoven 5ee555c9f0 see mailinglist
2006-05-31 16:29:43 +00:00

237 lines
5.9 KiB
JavaScript

// AJAX Plugin
// Docs Here:
// http://jquery.com/docs/ajax/
if ( typeof XMLHttpRequest == 'undefined' && typeof window.ActiveXObject == 'function') {
XMLHttpRequest = function() {
return new ActiveXObject((navigator.userAgent.toLowerCase().indexOf('msie 5') >= 0) ?
"Microsoft.XMLHTTP" : "Msxml2.XMLHTTP");
};
}
// Counter for holding the active query's
$.xmlActive=0;
$.xml = function( type, url, data, ret ) {
var xml = new XMLHttpRequest();
if ( xml ) {
// Open the socket
xml.open(type || "GET", url, true);
if ( data )
xml.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
// Set header so calling script knows that it's an XMLHttpRequest
xml.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
/* Force "Connection: close" for Mozilla browsers to work around
* a bug where XMLHttpReqeuest sends an incorrect Content-length
* header. See Mozilla Bugzilla #246651.
*/
if ( xml.overrideMimeType )
xml.setRequestHeader('Connection', 'close');
xml.onreadystatechange = function() {
// Socket is openend
if ( xml.readyState == 1 ) {
// Increase counter
$.xmlActive++;
// Show loader if needed
if ( ($.xmlActive >= 1) && ($.xmlCreate) )
$.xmlCreate();
}
// Socket is closed and data is available
if ( xml.readyState == 4 ) {
// Decrease counter
$.xmlActive--;
// Hide loader if needed
if ( ($.xmlActive <= 0) && ($.xmlDestroy) ) {
$.xmlDestroy();
$.xmlActive = 0
}
// Process result
if ( ret )
ret(xml);
}
};
xml.send(data)
}
};
$.httpData = function(r,type) {
return r.getResponseHeader("content-type").indexOf("xml") > 0 || type == "xml" ?
r.responseXML : r.responseText;
};
$.get = function( url, ret, type ) {
$.xml( "GET", url, null, function(r) {
if ( ret ) { ret( $.httpData(r,type) ); }
});
};
$.getXML = function( url, ret ) {
$.get( url, ret, "xml" );
};
$.post = function( url, data, ret, type ) {
$.xml( "POST", url, $.param(data), function(r) {
if ( ret ) { ret( $.httpData(r,type) ); }
});
};
$.postXML = function( url, data, ret ) {
$.post( url, data, ret, "xml" );
};
$.param = function(a) {
var s = [];
if (a && typeof a == 'object' && a.constructor == Array) {
for ( var i=0; i < a.length; i++ ) {
s[s.length] = a[i].name + "=" + encodeURIComponent( a[i].value );
}
} else {
for ( var j in a ) {
s[s.length] = j + "=" + encodeURIComponent( a[j] );
}
}
return s.join("&");
};
$.fn.load = function(a,o,f) {
// Arrrrghhhhhhhh!!
// I overwrote the event plugin's .load
// this won't happen again, I hope -John
if ( a && a.constructor == Function ) {
return this.bind("load", a);
}
var t = "GET";
if ( o && o.constructor == Function ) {
f = o;
o = null;
}
if (o !== null) {
o = $.param(o);
t = "POST";
}
var self = this;
$.xml(t,a,o,function(h){
h = h.responseText;
self.html(h).find("script").each(function(){
try {
$.eval( this.text || this.textContent || this.innerHTML );
} catch(e){}
});
if(f){f(h);}
});
return this;
};
/**
* name: $.fn.formValues
* example: $('#frmLogin').formValues('sButton')
* docs: Gets form values and creates a key=>value array of the found values.
* Optionally adds the button which is clicked if you provide it.
* Only does this for ENABLED elements in the order of the form.
*/
$.fn.formValues = function(sButton) {
var a = [];
var elp = {INPUT:true, TEXTAREA:true, OPTION:true};
// Loop the shite
$('*', this).each(function() {
// Skip elements not of the types in elp
if (!elp[this.tagName.toUpperCase()])
return;
// Skip disabled elements, submit buttons and image buttons
if ((this.disabled) || (this.type == 'submit') || (this.type == 'image'))
return;
// Skip non-selected nodes
if ((this.parentNode.nodeName == 'SELECT') && (!this.selected))
return;
// Skip non-checked nodes
if (((this.type == 'radio') || (this.type == 'checkbox')) && (!this.checked))
return;
// If we come here, everything is fine, so add the data
a.push({
name: this.name || this.id || this.parentNode.name || this.parentNode.id,
value: this.value
});
});
// Add submit button if needed
if (sButton && (sButton !== null)) {
var el = $(sButton).get(0);
a.push({
name: el.name || el.id || el.parentNode.name || el.parentNode.id,
value: el.value
});
}
// Done
return a;
};
/**
* name: $.fn.update
* example: $('someJQueryObject').update('sURL', 'sAction', 'aValues', 'fCallback');
* docs: Calls sURL with sAction and sends the aValues
* Puts the results from that call in the jQuery object and calls fCallback
*/
$.fn.update = function(sURL, sMethod, aValues, fCallback) {
var el = this;
// Process
$.xml(
sMethod || "GET",
sURL || "",
$.param(aValues),
function(sResult) {
sResult = $.httpData(sResult);
// Update the element with the new HTML
el.html(sResult);
// Evaluate the scripts AFTER this (so you can allready modify the new HTML!)
el.html(sResult).find("script").each(function(){
try { $.eval( this.text || this.textContent || this.innerHTML ); } catch(e) { }
});
// And call the callback handler :)
if (fCallback && (fCallback.constructor == Function))
fCallback();
}
);
};
/**
* name: $.fn.serialize
* example: $('someJQueryObject').serialize('sButton', 'fCallback');
* docs: Calls the form's action with the correct method and the serialized values.
* Optionally adds the button which is clicked if you provide it.
* When there are results, the fCallback function is called.
*/
$.fn.serialize = function(sButton, fCallback) {
var el = this.get(0);
// Process
$.xml(
el.method || "GET",
el.action || "",
$.param(this.formValues(sButton)),
function(sResult) {
if (fCallback && (fCallback.constructor == Function))
fCallback($.httpData(sResult));
}
);
};