User:Sp5uhe/AutoComplete

//from http://www.json.org/json.js and en:User:Zocky/AutoComplete.js

String.prototype.parseJSON = function () {

   try {
       return !(/[^,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]/.test(
               this.replace(/"(\\.|[^"\\])*"/g, ))) &&
           eval('(' + this + ')');
   } catch (e) {
       return false;
   }

};

function ac$query(cb,what) {

 if (ac$query.arguments.length>1 && ac$x) 
 {
   var i=2;
   var url="/w/query.php?format=json&what="+what;
   while (i < ac$query.arguments.length)
   {
     url=url+"&"+ac$query.arguments[i] + "=" + ac$query.arguments[i+1];
     i+=2;
   }

   ac$x.onreadystatechange=function() {
     try {
       if (ac$x.readyState==4)
         return ac$x.status==200 
         ? cb(ac$x.responseText.parseJSON()) 
         : cb(false);
     } catch (e) {
     }
   };
   ac$x.open("GET",url,true);
   ac$x.setRequestHeader('Accept','text/*');
   ac$x.send(null);
 }
 else return false;

}

// helper functions function ac$$e(id) { return document.getElementById(id); } function ac$$c(name,id) { var el=document.createElement(name); el.id=id; return el }; function ac$$ia(node,newnode) { return node.parentNode.insertBefore(newnode,node.nextSibling); } function ac$$uc(s) { return s.substring(0,1).toUpperCase()+s.substring(1) };

function ac$inputKeyDown(e) {

 if (e.which==40 && ac$b.style.visibility=="visible")
 {
   ac$b.focus();

// ac$b.selectedIndex=0; // ac$s.value=ac$b.options[0].value;

 }
 else
 {
   try {clearTimeout(ac$t)} catch (e) {};
   ac$t=setTimeout("ac$timeOut()",500)
 }

}

function ac$boxKeyPress(e) {

 if (e.which==13)
 {
   ac$s.value=ac$b.options[ac$b.selectedIndex].value;
   ac$b.style.visibility="hidden";
   ac$b.selectedIndex=-1;
   ac$s.focus();
 }
 else if (e.which==27)
 {
   ac$b.style.visibility="hidden";
   ac$b.selectedIndex=-1;
   ac$s.focus();
 }
 else if (e.which)
 { 
   ac$s.value+=String.fromCharCode(e.which);
   ac$s.focus();
   ac$b.selectedIndex=-1;
   ac$s.selectionStart=ac$s.selectionEnd=ac$s.value.length;
   try {clearTimeout(ac$t)} catch (e) {};
   ac$t=setTimeout("ac$timeOut()",500)
 }
 e.preventDefault();

}

function ac$boxClick(e) {

   ac$s.value=ac$b.options[ac$b.selectedIndex].value;
   ac$b.style.visibility="hidden";
   ac$b.selectedIndex=-1;
   ac$s.focus();

}

function ac$blur(e) {

 try {
   if (e.target==ac$b)
   {
     if (ac$b.style.visibility=="hidden") ac$b.blur()  
   }
   else if (e.target!=ac$s && e.target!=document && e.target!=window)
   {
     ac$b.style.visibility="hidden";
    ac$b.selectedIndex=-1;
   }
 }
 catch (e) {
   return;
 }

}

function ac$timeOut() {

 if (ac$s.value.length>0)
 {
   try {ac$x.abort()} catch(e){};
   cb=function(obj) 
   {
      ac$b.innerHTML=;
      for (var i in obj.meta.namespaces)
      {
        try
        {
          var ns=obj.meta.namespaces[i]['*'];
          ac$n[ns]=i;
          if (
            ac$s.value.toUpperCase() == ns.substring 
                                      (0,ac$s.value.length).toUpperCase()
          )
          {
            ac$b.innerHTML+='<option style="font-weight:bold">'
            + ns
            + ':</option>';
          }
        } catch(e) {}
      }

      for (var i in obj.pages)
      {
        if (
          ac$s.value.toUpperCase() == obj.pages[i].title.substring 
                                      (0,ac$s.value.length).toUpperCase()
        )
          ac$b.innerHTML+= ( 
            obj.pages[i].redirect!="" 
            ? '<option>'
            : '<option style="color:silver">'
          )
          + obj.pages[i].title
          + '</option>';
      }

// ac$b.size= ac$b.options.length<8 ? ac$b.options.length : 8;

        ac$b.options.length || (ac$b.innerHTML='<option value="'+ac$s.value+'" style="color:silver">(nie znaleziono)</option>');
      ac$b.style.visibility="visible";
   };

   var ns=ac$s.value.match(/^.*?(?=:)/);
   if (ns in ac$n)
   {
      var apns = ac$n[ns];
      var apfrom = ac$s.value.replace(/^.*?:/,);
   }
   else
   {
      var apns=0;
      var apfrom=ac$s.value;
   }

   ac$query(cb,"allpages|namespaces","apfrom",ac$$uc(apfrom.replace(/ /g,'_')),"aplimit","50","apnamespace",apns);
 }
 else
 {
   ac$b.style.visibility="hidden";
 }

}

// initialization

var ac$s; var ac$b; var ac$t; var ac$n=[]; var ac$x = window.XMLHttpRequest ? new XMLHttpRequest()

        : window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP")
        : false;

function ac$init() {

 ac$s=ac$$e("searchInput");
 if(ac$s)
 {
   ac$b=ac$$c('select','autocompletebox');
   ac$b.size=8;
   ac$b.style.visibility="hidden";
   ac$$ia(ac$s,ac$b);

   ac$s.setAttribute('autocomplete','off');
   ac$s.addEventListener('keydown',ac$inputKeyDown,false);
   ac$b.addEventListener('keypress',ac$boxKeyPress,false);
   ac$b.addEventListener('click',ac$boxClick,false);
   document.addEventListener('focus',ac$blur,false);
 }

}

addOnloadHook(ac$init);