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- if (typeof(bsn) == "undefined")
- _b = bsn = {};
- if (typeof(_b.Autosuggest) == "undefined")
- _b.Autosuggest = {};
- else
- alert("Autosuggest is already set!");
- _b.AutoSuggest = function (id, param)
- {
- // no DOM - give up!
- //
- if (!document.getElementById)
- return 0;
- // get field via DOM
- //
- this.fld = _b.DOM.gE(id);
- if (!this.fld)
- return 0;
- // init variables
- //
- this.sInp = "";
- this.nInpC = 0;
- this.aSug = [];
- this.iHigh = 0;
- // parameters object
- //
- this.oP = param ? param : {};
- // defaults
- //
- var k, def = {minchars:1, meth:"get", varname:"input", className:"autosuggest", timeout:50000, delay:0, offsety:-5, shownoresults: true, noresults: "No albums or tracks have been found.", maxheight: 250, cache: false, maxentries: 25};
- for (k in def)
- {
- if (typeof(this.oP[k]) != typeof(def[k]))
- this.oP[k] = def[k];
- }
- // set keyup handler for field
- // and prevent autocomplete from client
- //
- var p = this;
- // NOTE: not using addEventListener because UpArrow fired twice in Safari
- //_b.DOM.addEvent( this.fld, 'keyup', function(ev){ return pointer.onKeyPress(ev); } );
- this.fld.onkeypress = function(ev){ return p.onKeyPress(ev); };
- this.fld.onkeyup = function(ev){ return p.onKeyUp(ev); };
- this.fld.setAttribute("autocomplete","off");
- };
- _b.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 = 1;
- switch(key)
- {
- case RETURN:
- this.setHighlightedValue();
- bubble = 0;
- break;
- case ESC:
- this.clearSuggestions();
- break;
- }
- return bubble;
- };
- _b.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 = 1;
- switch(key)
- {
- case ARRUP:
- this.changeHighlight(key);
- bubble = 0;
- break;
- case ARRDN:
- this.changeHighlight(key);
- bubble = 0;
- break;
- default:
- this.getSuggestions(this.fld.value);
- }
- return bubble;
- };_b.AutoSuggest.prototype.getSuggestions = function (val)
- {
- // if input stays the same, do nothing
- //
- if (val == this.sInp)
- return 0;
- // kill list
- //
- _b.DOM.remE(this.idAs);
- this.sInp = val;
- // input length is less than the min required to trigger a request
- // do nothing
- //
- if (val.length < this.oP.minchars)
- {
- this.aSug = [];
- this.nInpC = val.length;
- return 0;
- }
- var ol = this.nInpC; // old length
- this.nInpC = val.length ? val.length : 0;
- // if caching enabled, and user is typing (ie. length of input is increasing)
- // filter results out of aSuggestions from last request
- //
- var l = this.aSug.length;
- if (this.nInpC > ol && l && l<this.oP.maxentries && this.oP.cache)
- {
- var arr = [];
- for (var i=0;i<l;i++)
- {
- if (this.aSug[i].value.substr(0,val.length).toLowerCase() == val.toLowerCase())
- arr.push( this.aSug[i] );
- }
- this.aSug = arr;
- this.createList(this.aSug);
- return false;
- }
- else
- // do new request
- //
- {
- var pointer = this;
- var input = this.sInp;
- clearTimeout(this.ajID);
- this.ajID = setTimeout( function() { pointer.doAjaxRequest(input) }, this.oP.delay );
- }
- return false;
- };_b.AutoSuggest.prototype.doAjaxRequest = function (input)
- {
- // check that saved input is still the value of the field
- //
- if (input != this.fld.value)
- return false;
- var pointer = this;
- // create ajax request
- //
- if (typeof(this.oP.script) == "function")
- var url = this.oP.script(encodeURIComponent(this.sInp));
- else
- var url = this.oP.script+this.oP.varname+"="+encodeURIComponent(this.sInp);
- if (!url)
- return false;
- var meth = this.oP.meth;
- var input = this.sInp;
- var onSuccessFunc = function (req) { pointer.setSuggestions(req, input) };
- var onErrorFunc = function (status) { alert("AJAX error: "+status); };
- var myAjax = new _b.Ajax();
- myAjax.makeRequest( url, meth, onSuccessFunc, onErrorFunc );
- };_b.AutoSuggest.prototype.setSuggestions = function (req, input)
- {
- // if field input no longer matches what was passed to the request
- // don't show the suggestions
- //
- if (input != this.fld.value)
- return false;
- this.aSug = [];
- if (this.oP.json)
- {
- var jsondata = eval('(' + req.responseText + ')');
- for (var i=0;i<jsondata.results.length;i++)
- {
- this.aSug.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.aSug.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.aSug);
- };_b.AutoSuggest.prototype.createList = function(arr)
- {
- var pointer = this;
- // get rid of old list
- // and clear the list removal timeout
- //
- _b.DOM.remE(this.idAs);
- this.killTimeout();
- // if no results, and shownoresults is false, do nothing
- //
- if (arr.length == 0 && !this.oP.shownoresults)
- return false;
- // create holding div
- //
- var div = _b.DOM.cE("div", {id:this.idAs, className:this.oP.className});
- var hcorner = _b.DOM.cE("div", {className:"as_corner"});
- var hbar = _b.DOM.cE("div", {className:"as_bar"});
- var header = _b.DOM.cE("div", {className:"as_header"});
- header.appendChild(hcorner);
- header.appendChild(hbar);
- div.appendChild(header);
- // create and populate ul
- //
- var ul = _b.DOM.cE("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.sInp.toLowerCase() );
- var output = val.substring(0,st) + "<em>" + val.substring(st, st+this.sInp.length) + "</em>" + val.substring(st+this.sInp.length);
- var span = _b.DOM.cE("span", {}, output, true);
- if (arr[i].info != "")
- {
- var br = _b.DOM.cE("br", {});
- span.appendChild(br);
- var small = _b.DOM.cE("small", {}, arr[i].info);
- span.appendChild(small);
- }
- var a = _b.DOM.cE("a", { href:"#" });
- var tl = _b.DOM.cE("span", {className:"tl"}, " ");
- var tr = _b.DOM.cE("span", {className:"tr"}, " ");
- var pic = _b.DOM.cE("img",{src:"AutoSuggest/"+arr[i].id+".jpg",className:"float"}," ");
- a.appendChild(tl);
- a.appendChild(tr);
- a.appendChild(pic);
- a.appendChild(span);
- a.name = i+1;
- a.onclick = function () { pointer.setHighlightedValue(); return false; };
- a.onmouseover = function () { pointer.setHighlight(this.name); };
- var li = _b.DOM.cE( "li", {}, a );
- ul.appendChild( li );
- }
- // no results
- //
- if (arr.length == 0 && this.oP.shownoresults)
- {
- var li = _b.DOM.cE( "li", {className:"as_warning"}, this.oP.noresults );
- ul.appendChild( li );
- }
- div.appendChild( ul );
- var fcorner = _b.DOM.cE("div", {className:"as_corner"});
- var fbar = _b.DOM.cE("div", {className:"as_bar"});
- var footer = _b.DOM.cE("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 = _b.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.iHigh = 0;
- // remove list after an interval
- //
- var pointer = this;
- this.toID = setTimeout(function () { pointer.clearSuggestions() }, this.oP.timeout);
- };_b.AutoSuggest.prototype.changeHighlight = function(key)
- {
- var list = _b.DOM.gE("as_ul");
- if (!list)
- return false;
- var n;
- if (key == 40)
- n = this.iHigh + 1;
- else if (key == 38)
- n = this.iHigh - 1;
- if (n > list.childNodes.length)
- n = list.childNodes.length;
- if (n < 1)
- n = 1;
- this.setHighlight(n);
- };
- _b.AutoSuggest.prototype.setHighlight = function(n)
- {
- var list = _b.DOM.gE("as_ul");
- if (!list)
- return false;
- if (this.iHigh > 0)
- this.clearHighlight();
- this.iHigh = Number(n);
- list.childNodes[this.iHigh-1].className = "as_highlight";
- this.killTimeout();
- };
- _b.AutoSuggest.prototype.clearHighlight = function()
- {
- var list = _b.DOM.gE("as_ul");
- if (!list)
- return false;
- if (this.iHigh > 0)
- {
- list.childNodes[this.iHigh-1].className = "";
- this.iHigh = 0;
- }
- };
- _b.AutoSuggest.prototype.setHighlightedValue = function ()
- {
- if (this.iHigh)
- {
- this.sInp = this.fld.value = this.aSug[ this.iHigh-1 ].value;
- // move cursor to end of input (safari)
- //
- this.fld.focus();
- if (this.fld.selectionStart)
- this.fld.setSelectionRange(this.sInp.length, this.sInp.length);
- this.clearSuggestions();
- // pass selected object to callback function, if exists
- //
- if (typeof(this.oP.callback) == "function")
- this.oP.callback( this.aSug[this.iHigh-1] );
- }
- };
- _b.AutoSuggest.prototype.killTimeout = function()
- {
- clearTimeout(this.toID);
- };
- _b.AutoSuggest.prototype.resetTimeout = function()
- {
- clearTimeout(this.toID);
- var pointer = this;
- this.toID = setTimeout(function () { pointer.clearSuggestions() }, 1000);
- };
- _b.AutoSuggest.prototype.clearSuggestions = function ()
- {
- this.killTimeout();
- var ele = _b.DOM.gE(this.idAs);
- var pointer = this;
- if (ele)
- {
- var fade = new _b.Fader(ele,1,0,250,function () { _b.DOM.remE(pointer.idAs) });
- }
- };
- // AJAX PROTOTYPE _____________________________________________
- if (typeof(_b.Ajax) == "undefined")
- _b.Ajax = {};
- _b.Ajax = function ()
- {
- this.req = {};
- this.isIE = false;
- };
- _b.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();
- }
- }
- };
- _b.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(_b.DOM) == "undefined")
- _b.DOM = {};
- /* create element */
- _b.DOM.cE = function ( type, attr, cont, html )
- {
- var ne = document.createElement( type );
- if (!ne)
- return 0;
- for (var a in attr)
- ne[a] = attr[a];
- var t = typeof(cont);
- if (t == "string" && !html)
- ne.appendChild( document.createTextNode(cont) );
- else if (t == "string" && html)
- ne.innerHTML = cont;
- else if (t == "object")
- ne.appendChild( cont );
- return ne;
- };
- /* get element */
- _b.DOM.gE = function ( e )
- {
- var t=typeof(e);
- if (t == "undefined")
- return 0;
- else if (t == "string")
- {
- var re = document.getElementById( e );
- if (!re)
- return 0;
- else if (typeof(re.appendChild) != "undefined" )
- return re;
- else
- return 0;
- }
- else if (typeof(e.appendChild) != "undefined")
- return e;
- else
- return 0;
- };
- /* remove element */
- _b.DOM.remE = function ( ele )
- {
- var e = this.gE(ele);
- if (!e)
- return 0;
- else if (e.parentNode.removeChild(e))
- return true;
- else
- return 0;
- };
- /* get position */
- _b.DOM.getPos = function ( e )
- {
- var e = this.gE(e);
- var obj = e;
- var curleft = 0;
- if (obj.offsetParent)
- {
- while (obj.offsetParent)
- {
- curleft += obj.offsetLeft;
- obj = obj.offsetParent;
- }
- }
- else if (obj.x)
- curleft += obj.x;
- var obj = e;
- 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(_b.Fader) == "undefined")
- _b.Fader = {};_b.Fader = function (ele, from, to, fadetime, callback)
- {
- if (!ele)
- return 0;
- this.e = ele;
- this.from = from;
- this.to = to;
- this.cb = callback;
- this.nDur = fadetime;
- this.nInt = 50;
- this.nTime = 0;
- var p = this;
- this.nID = setInterval(function() { p._fade() }, this.nInt);
- };_b.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.e.filters) // internet explorer
- {
- try
- {
- this.e.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.e.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity='+ieop+')';
- }
- }
- else // other browsers
- {
- this.e.style.opacity = op;
- }
- if (this.nTime == this.nDur)
- {
- clearInterval( this.nID );
- if (this.cb != undefined)
- this.cb();
- }
- };
- _b.Fader.prototype._tween = function(t,b,c,d)
- {
- return b + ( (c-b) * (t/d) );
- };
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