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View Full Version : Need some help with an autosuggestion script



fenhopi
12-07-2010, 02:35 PM
Hi, I need some help making the suggestion do this:
I've gotten it working great finding the username and fullname.

However, when I click the chosen suggestion I want it do navigate to "profile.php?user=$username"

Here's the js:



var useBSNns;

if (useBSNns)
{
if (typeof(bsn) == "undefined")
bsn = {}
_bsn = bsn;
}
else
{
_bsn = this;
}



if (typeof(_bsn.Autosuggest) == "undefined")
_bsn.Autosuggest = {}

_bsn.AutoSuggest = function (fldID, param)
{
// no DOM - give up!
//
if (!document.getElementById)
return false;


// get field via DOM
//
this.fld = _bsn.DOM.getElement(fldID);

if (!this.fld)
return false;




// init variables
//
this.sInput = "";
this.nInputChars = 0;
this.aSuggestions = [];
this.iHighlighted = 0;




// parameters object
//
this.oP = (param) ? param : {};

// defaults
//
if (!this.oP.minchars) this.oP.minchars = 1;
if (!this.oP.method) this.oP.meth = "get";
if (!this.oP.varname) this.oP.varname = "input";
if (!this.oP.className) this.oP.className = "autosuggest";
if (!this.oP.timeout) this.oP.timeout = 2500;
if (!this.oP.delay) this.oP.delay = 500;
if (!this.oP.offsety) this.oP.offsety = -5;
if (!this.oP.shownoresults) this.oP.shownoresults = true;
if (!this.oP.noresults) this.oP.noresults = "No results!";
if (!this.oP.maxheight && this.oP.maxheight !== 0) this.oP.maxheight = 250;
if (!this.oP.cache && this.oP.cache != false) this.oP.cache = true;



// set keyup handler for field
// and prevent autocomplete from client
//
var pointer = this;

// NOTE: not using addEventListener because UpArrow fired twice in Safari
//_bsn.DOM.addEvent( this.fld, 'keyup', function(ev){ return pointer.onKeyPress(ev); } );

this.fld.onkeypress = function(ev){ return pointer.onKeyPress(ev); }
this.fld.onkeyup = function(ev){ return pointer.onKeyUp(ev); }

this.fld.setAttribute("autocomplete","off");
}

_bsn.AutoSuggest.prototype.onKeyPress = function(ev)
{

var key = (window.event) ? window.event.keyCode : ev.keyCode;



// set responses to keydown events in the field
// this allows the user to use the arrow keys to scroll through the results
// ESCAPE clears the list
// TAB sets the current highlighted value
//
var RETURN = 13;
var TAB = 9;
var ESC = 27;

var bubble = true;

switch(key)
{

case RETURN:
this.setHighlightedValue();
bubble = false;
break;


case ESC:
this.clearSuggestions();
break;
}

return bubble;
}



_bsn.AutoSuggest.prototype.onKeyUp = function(ev)
{
var key = (window.event) ? window.event.keyCode : ev.keyCode;



// set responses to keydown events in the field
// this allows the user to use the arrow keys to scroll through the results
// ESCAPE clears the list
// TAB sets the current highlighted value
//

var ARRUP = 38;
var ARRDN = 40;

var bubble = true;

switch(key)
{


case ARRUP:
this.changeHighlight(key);
bubble = false;
break;


case ARRDN:
this.changeHighlight(key);
bubble = false;
break;


default:
this.getSuggestions(this.fld.value);
}

return bubble;


}

_bsn.AutoSuggest.prototype.getSuggestions = function (val)
{

// if input stays the same, do nothing
//
if (val == this.sInput)
return false;


// input length is less than the min required to trigger a request
// reset input string
// do nothing
//
if (val.length < this.oP.minchars)
{
this.sInput = "";
return false;
}


// if caching enabled, and user is typing (ie. length of input is increasing)
// filter results out of aSuggestions from last request
//
if (val.length>this.nInputChars && this.aSuggestions.length && this.oP.cache)
{
var arr = [];
for (var i=0;i<this.aSuggestions.length;i++)
{
if (this.aSuggestions[i].value.substr(0,val.length).toLowerCase() == val.toLowerCase())
arr.push( this.aSuggestions[i] );
}

this.sInput = val;
this.nInputChars = val.length;
this.aSuggestions = arr;

this.createList(this.aSuggestions);



return false;
}
else
// do new request
//
{
this.sInput = val;
this.nInputChars = val.length;


var pointer = this;
clearTimeout(this.ajID);
this.ajID = setTimeout( function() { pointer.doAjaxRequest() }, this.oP.delay );
}

return false;
}

_bsn.AutoSuggest.prototype.doAjaxRequest = function ()
{

var pointer = this;

// create ajax request
var url = this.oP.script+this.oP.varname+"="+escape(this.fld.value);
var meth = this.oP.meth;

var onSuccessFunc = function (req) { pointer.setSuggestions(req) };
var onErrorFunc = function (status) { alert("AJAX error: "+status); };

var myAjax = new _bsn.Ajax();
myAjax.makeRequest( url, meth, onSuccessFunc, onErrorFunc );
}

_bsn.AutoSuggest.prototype.setSuggestions = function (req)
{
this.aSuggestions = [];

if (this.oP.json)
{
var jsondata = eval('(' + req.responseText + ')');

for (var i=0;i<jsondata.results.length;i++)
{
this.aSuggestions.push( { 'id':jsondata.results[i].id, 'value':jsondata.results[i].value, 'info':jsondata.results[i].info } );
}
}
else
{

var xml = req.responseXML;

// traverse xml
//
var results = xml.getElementsByTagName('results')[0].childNodes;

for (var i=0;i<results.length;i++)
{
if (results[i].hasChildNodes())
this.aSuggestions.push( { 'id':results[i].getAttribute('id'), 'value':results[i].childNodes[0].nodeValue, 'info':results[i].getAttribute('info') } );
}

}

this.idAs = "as_"+this.fld.id;


this.createList(this.aSuggestions);

}



_bsn.AutoSuggest.prototype.createList = function(arr)
{
var pointer = this;


// get rid of old list
// and clear the list removal timeout
//
_bsn.DOM.removeElement(this.idAs);
this.killTimeout();


// create holding div
//
var div = _bsn.DOM.createElement("div", {id:this.idAs, className:this.oP.className});

var hcorner = _bsn.DOM.createElement("div", {className:"as_corner"});
var hbar = _bsn.DOM.createElement("div", {className:"as_bar"});
var header = _bsn.DOM.createElement("div", {className:"as_header"});
header.appendChild(hcorner);
header.appendChild(hbar);
div.appendChild(header);




// create and populate ul
//
var ul = _bsn.DOM.createElement("ul", {id:"as_ul"});




// loop throught arr of suggestions
// creating an LI element for each suggestion
//
for (var i=0;i<arr.length;i++)
{
// format output with the input enclosed in a EM element
// (as HTML, not DOM)
//
var val = arr[i].value;
var st = val.toLowerCase().indexOf( this.sInput.toLowerCase() );
var output = val.substring(0,st) + "<em>" + val.substring(st, st+this.sInput.length) + "</em>" + val.substring(st+this.sInput.length);


var span = _bsn.DOM.createElement("span", {}, output, true);
if (arr[i].info != "")
{
var br = _bsn.DOM.createElement("br", {});
span.appendChild(br);
var small = _bsn.DOM.createElement("small", {}, arr[i].info);
span.appendChild(small);
}

var a = _bsn.DOM.createElement("a", { href:"#" });

var tl = _bsn.DOM.createElement("span", {className:"tl"}, " ");
var tr = _bsn.DOM.createElement("span", {className:"tr"}, " ");
a.appendChild(tl);
a.appendChild(tr);

a.appendChild(span);

a.name = i+1;
a.onclick = function () { pointer.setHighlightedValue(); return false; }
a.onmouseover = function () { pointer.setHighlight(this.name); }

var li = _bsn.DOM.createElement( "li", {}, a );

ul.appendChild( li );
}


// no results
//
if (arr.length == 0)
{
var li = _bsn.DOM.createElement( "li", {className:"as_warning"}, this.oP.noresults );

ul.appendChild( li );
}


div.appendChild( ul );


var fcorner = _bsn.DOM.createElement("div", {className:"as_corner"});
var fbar = _bsn.DOM.createElement("div", {className:"as_bar"});
var footer = _bsn.DOM.createElement("div", {className:"as_footer"});
footer.appendChild(fcorner);
footer.appendChild(fbar);
div.appendChild(footer);



// get position of target textfield
// position holding div below it
// set width of holding div to width of field
//
var pos = _bsn.DOM.getPos(this.fld);

div.style.left = pos.x + "px";
div.style.top = ( pos.y + this.fld.offsetHeight + this.oP.offsety ) + "px";
div.style.width = this.fld.offsetWidth + "px";



// set mouseover functions for div
// when mouse pointer leaves div, set a timeout to remove the list after an interval
// when mouse enters div, kill the timeout so the list won't be removed
//
div.onmouseover = function(){ pointer.killTimeout() }
div.onmouseout = function(){ pointer.resetTimeout() }


// add DIV to document
//
document.getElementsByTagName("body")[0].appendChild(div);



// currently no item is highlighted
//
this.iHighlighted = 0;






// remove list after an interval
//
var pointer = this;
this.toID = setTimeout(function () { pointer.clearSuggestions() }, this.oP.timeout);
}







_bsn.AutoSuggest.prototype.changeHighlight = function(key)
{
var list = _bsn.DOM.getElement("as_ul");
if (!list)
return false;

var n;

if (key == 40)
n = this.iHighlighted + 1;
else if (key == 38)
n = this.iHighlighted - 1;


if (n > list.childNodes.length)
n = list.childNodes.length;
if (n < 1)
n = 1;


this.setHighlight(n);
}



_bsn.AutoSuggest.prototype.setHighlight = function(n)
{
var list = _bsn.DOM.getElement("as_ul");
if (!list)
return false;

if (this.iHighlighted > 0)
this.clearHighlight();

this.iHighlighted = Number(n);

list.childNodes[this.iHighlighted-1].className = "as_highlight";


this.killTimeout();
}


_bsn.AutoSuggest.prototype.clearHighlight = function()
{
var list = _bsn.DOM.getElement("as_ul");
if (!list)
return false;

if (this.iHighlighted > 0)
{
list.childNodes[this.iHighlighted-1].className = "";
this.iHighlighted = 0;
}
}


_bsn.AutoSuggest.prototype.setHighlightedValue = function ()
{
if (this.iHighlighted)
{
this.sInput = this.fld.value = this.aSuggestions[ this.iHighlighted-1 ].value;

// move cursor to end of input (safari)
//
this.fld.focus();
if (this.fld.selectionStart)
this.fld.setSelectionRange(this.sInput.length, this.sInput.length);


this.clearSuggestions();

// pass selected object to callback function, if exists
//
if (typeof(this.oP.callback) == "function")
this.oP.callback( this.aSuggestions[this.iHighlighted-1] );
}
}




_bsn.AutoSuggest.prototype.killTimeout = function()
{
clearTimeout(this.toID);
}

_bsn.AutoSuggest.prototype.resetTimeout = function()
{
clearTimeout(this.toID);
var pointer = this;
this.toID = setTimeout(function () { pointer.clearSuggestions() }, 1000);
}


_bsn.AutoSuggest.prototype.clearSuggestions = function ()
{

this.killTimeout();

var ele = _bsn.DOM.getElement(this.idAs);
var pointer = this;
if (ele)
{
var fade = new _bsn.Fader(ele,1,0,250,function () { _bsn.DOM.removeElement(pointer.idAs) });
}
}

// AJAX PROTOTYPE _____________________________________________


if (typeof(_bsn.Ajax) == "undefined")
_bsn.Ajax = {}



_bsn.Ajax = function ()
{
this.req = {};
this.isIE = false;
}



_bsn.Ajax.prototype.makeRequest = function (url, meth, onComp, onErr)
{

if (meth != "POST")
meth = "GET";

this.onComplete = onComp;
this.onError = onErr;

var pointer = this;

// branch for native XMLHttpRequest object
if (window.XMLHttpRequest)
{
this.req = new XMLHttpRequest();
this.req.onreadystatechange = function () { pointer.processReqChange() };
this.req.open("GET", url, true); //
this.req.send(null);
// branch for IE/Windows ActiveX version
}
else if (window.ActiveXObject)
{
this.req = new ActiveXObject("Microsoft.XMLHTTP");
if (this.req)
{
this.req.onreadystatechange = function () { pointer.processReqChange() };
this.req.open(meth, url, true);
this.req.send();
}
}
}


_bsn.Ajax.prototype.processReqChange = function()
{

// only if req shows "loaded"
if (this.req.readyState == 4) {
// only if "OK"
if (this.req.status == 200)
{
this.onComplete( this.req );
} else {
this.onError( this.req.status );
}
}
}

// DOM PROTOTYPE _____________________________________________


if (typeof(_bsn.DOM) == "undefined")
_bsn.DOM = {}




_bsn.DOM.createElement = function ( type, attr, cont, html )
{
var ne = document.createElement( type );
if (!ne)
return false;

for (var a in attr)
ne[a] = attr[a];

if (typeof(cont) == "string" && !html)
ne.appendChild( document.createTextNode(cont) );
else if (typeof(cont) == "string" && html)
ne.innerHTML = cont;
else if (typeof(cont) == "object")
ne.appendChild( cont );

return ne;
}





_bsn.DOM.clearElement = function ( id )
{
var ele = this.getElement( id );

if (!ele)
return false;

while (ele.childNodes.length)
ele.removeChild( ele.childNodes[0] );

return true;
}


_bsn.DOM.removeElement = function ( ele )
{
var e = this.getElement(ele);

if (!e)
return false;
else if (e.parentNode.removeChild(e))
return true;
else
return false;
}





_bsn.DOM.replaceContent = function ( id, cont, html )
{
var ele = this.getElement( id );

if (!ele)
return false;

this.clearElement( ele );

if (typeof(cont) == "string" && !html)
ele.appendChild( document.createTextNode(cont) );
else if (typeof(cont) == "string" && html)
ele.innerHTML = cont;
else if (typeof(cont) == "object")
ele.appendChild( cont );
}


_bsn.DOM.getElement = function ( ele )
{
if (typeof(ele) == "undefined")
{
return false;
}
else if (typeof(ele) == "string")
{
var re = document.getElementById( ele );
if (!re)
return false;
else if (typeof(re.appendChild) != "undefined" ) {
return re;
} else {
return false;
}
}
else if (typeof(ele.appendChild) != "undefined")
return ele;
else
return false;
}







_bsn.DOM.appendChildren = function ( id, arr )
{
var ele = this.getElement( id );

if (!ele)
return false;


if (typeof(arr) != "object")
return false;

for (var i=0;i<arr.length;i++)
{
var cont = arr[i];
if (typeof(cont) == "string")
ele.appendChild( document.createTextNode(cont) );
else if (typeof(cont) == "object")
ele.appendChild( cont );
}
}









_bsn.DOM.getPos = function ( ele )
{
var ele = this.getElement(ele);

var obj = ele;

var curleft = 0;
if (obj.offsetParent)
{
while (obj.offsetParent)
{
curleft += obj.offsetLeft
obj = obj.offsetParent;
}
}
else if (obj.x)
curleft += obj.x;


var obj = ele;

var curtop = 0;
if (obj.offsetParent)
{
while (obj.offsetParent)
{
curtop += obj.offsetTop
obj = obj.offsetParent;
}
}
else if (obj.y)
curtop += obj.y;

return {x:curleft, y:curtop}
}










// FADER PROTOTYPE _____________________________________________



if (typeof(_bsn.Fader) == "undefined")
_bsn.Fader = {}





_bsn.Fader = function (ele, from, to, fadetime, callback)
{
if (!ele)
return false;

this.ele = ele;

this.from = from;
this.to = to;

this.callback = callback;

this.nDur = fadetime;

this.nInt = 50;
this.nTime = 0;

var p = this;
this.nID = setInterval(function() { p._fade() }, this.nInt);
}




_bsn.Fader.prototype._fade = function()
{
this.nTime += this.nInt;

var ieop = Math.round( this._tween(this.nTime, this.from, this.to, this.nDur) * 100 );
var op = ieop / 100;

if (this.ele.filters) // internet explorer
{
try
{
this.ele.filters.item("DXImageTransform.Microsoft.Alpha").opacity = ieop;
} catch (e) {
// If it is not set initially, the browser will throw an error. This will set it if it is not set yet.
this.ele.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity='+ieop+')';
}
}
else // other browsers
{
this.ele.style.opacity = op;
}


if (this.nTime == this.nDur)
{
clearInterval( this.nID );
if (this.callback != undefined)
this.callback();
}
}



_bsn.Fader.prototype._tween = function(t,b,c,d)
{
return b + ( (c-b) * (t/d) );
}


Here's the php (if you need it):

<?php

include("include/session.php");


/*
note:
this is just a static test version using a hard-coded countries array.
normally you would be populating the array out of a database

the returned xml has the following structure
<results>
<rs>foo</rs>
<rs>bar</rs>
</results>
*/

$GetNames = "SELECT firstname, lastname, username, country FROM users";
$GetNamesConnect = $database->query($GetNames);

While($row = mysql_fetch_array($GetNamesConnect))
{
$aUsers[] = $row['firstname'] . " " . $row['lastname'];
$aInfo[] = $row['country'];
$Name[] = $row['username'];
}




$input = strtolower( $_GET['input'] );
$len = strlen($input);


$aResults = array();

if ($len)
{
for ($i=0;$i<count($aUsers);$i++)
{
// had to use utf_decode, here
// not necessary if the results are coming from mysql
//
if (strtolower(substr(utf8_decode($aUsers[$i]),0,$len)) == $input)
$aResults[] = array( "id"=>($i+1) ,"value"=>htmlspecialchars($aUsers[$i]), "info"=>htmlspecialchars($aInfo[$i]), "username"=>htmlspecialchars($Name[$i]));

//if (stripos(utf8_decode($aUsers[$i]), $input) !== false)
// $aResults[] = array( "id"=>($i+1) ,"value"=>htmlspecialchars($aUsers[$i]), "info"=>htmlspecialchars($aInfo[$i]) );
}
}







header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past
header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
header ("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header ("Pragma: no-cache"); // HTTP/1.0



if (isset($_REQUEST['json']))
{
header("Content-Type: application/json");

echo "{\"results\": [";
$arr = array();
for ($i=0;$i<count($aResults);$i++)
{
$arr[] = "{\"id\": \"".$aResults[$i]['id']."\", \"value\": \"".$aResults[$i]['value']."\", \"info\": \"\"}";
}
echo implode(", ", $arr);
echo "]}";
}
else
{
header("Content-Type: text/xml");

echo "<?xml version=\"1.0\" encoding=\"utf-8\" ?><results>";
for ($i=0;$i<count($aResults);$i++)
{
echo "<rs id=\""
.$aResults[$i]['id']
."\" info=\""
.$aResults[$i]['info']
."\">"
.$aResults[$i]['value']
." "
."<h1>" .$aResults[$i]['username'] ."</h1>"
."</rs>";
}
echo "</results>";
}
?>

And the main page:



<form method="get" action="">
<label for="testinput_xml">Person</label>
<input type="text" id="testinput_xml" value="" style="width:300px" />
<br /><br /><input type="submit" value="submit" />
</form>

<script type="text/javascript">
var options = {
script:"test.php?json=true&",
varname:"input",
json:true,
callback: function (obj) { document.getElementById('testid').value = obj.id; }
};
var as_json = new AutoSuggest('testinput', options);


var options_xml = {
script:"test.php?",
varname:"input"
};
var as_xml = new AutoSuggest('testinput_xml', options_xml);
</script>



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