/*
#***************************************************************#
# © NPedia Technologies Pvt. Ltd :: litesearch(Version-1.0.0.0) #
#***************************************************************#
*/
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function autoCompleteDB() {
    this.aNames = new Array();
}

autoCompleteDB.prototype.assignArray = function(aList) {
    this.aNames = aList;
};

autoCompleteDB.prototype.getMatches = function(str, aList, maxSize) {
    /* debug */ //alert(maxSize+"ok getmatches");
    var ctr = 0;
    for (var i in this.aNames) {
        if (this.aNames[i].toLowerCase().indexOf(str.toLowerCase()) == 0) /*looking for case insensitive matches */
        {
            aList.push(this.aNames[i]);
            ctr++;
        }
        if (ctr == (maxSize - 1)) /* counter to limit no of matches to maxSize */
            break;
    }
};

function autoComplete(aNames, oText, oDiv, maxSize) {

    this.oText = oText;
    this.oDiv = oDiv;
    this.maxSize = maxSize;
    this.cur = -1;


    /*debug here */
    //alert(oText+","+this.oDiv);

    this.db = new autoCompleteDB();
    this.db.assignArray(aNames);

    oText.onkeyup = this.keyUp;
    oText.onkeydown = this.keyDown;
    oText.autoComplete = this;
    oText.onblur = this.hideSuggest;
}

autoComplete.prototype.hideSuggest = function() {
    this.autoComplete.oDiv.style.visibility = "hidden";
};

autoComplete.prototype.selectText = function(iStart, iEnd) {
    if (this.oText.createTextRange) /* For IE */
    {
        var oRange = this.oText.createTextRange();
        oRange.moveStart("character", iStart);
        oRange.moveEnd("character", iEnd - this.oText.value.length);
        oRange.select();
    }
    else if (this.oText.setSelectionRange) /* For Mozilla */
    {
        this.oText.setSelectionRange(iStart, iEnd);
    }
    this.oText.focus();
};

autoComplete.prototype.textComplete = function(sFirstMatch) {
    if (this.oText.createTextRange || this.oText.setSelectionRange) {
        var iStart = this.oText.value.length;
        this.oText.value = sFirstMatch;
        this.selectText(iStart, sFirstMatch.length);
    }
};

autoComplete.prototype.keyDown = function(oEvent) {
    oEvent = window.event || oEvent;
    iKeyCode = oEvent.keyCode;

    switch (iKeyCode) {
        case 38: //up arrow
            this.autoComplete.moveUp();
            break;
        case 40: //down arrow
            this.autoComplete.moveDown();
            break;
        /*case 13: //return key
            window.focus();
            break;*/
    }
};

autoComplete.prototype.moveDown = function() {
    if (this.oDiv.childNodes.length > 0 && this.cur < (this.oDiv.childNodes.length - 1)) {
        ++this.cur;
        for (var i = 0; i < this.oDiv.childNodes.length; i++) {
            if (i == this.cur) {
                this.oDiv.childNodes[i].className = "over";
                this.oText.value = this.oDiv.childNodes[i].innerHTML;
            }
            else {
                this.oDiv.childNodes[i].className = "";
            }
        }
    }
};

autoComplete.prototype.moveUp = function() {
    if (this.oDiv.childNodes.length > 0 && this.cur > 0) {
        --this.cur;
        for (var i = 0; i < this.oDiv.childNodes.length; i++) {
            if (i == this.cur) {
                this.oDiv.childNodes[i].className = "over";
                this.oText.value = this.oDiv.childNodes[i].innerHTML;
            }
            else {
                this.oDiv.childNodes[i].className = "";
            }
        }
    }
};

autoComplete.prototype.keyUp = function(oEvent) {
    oEvent = oEvent || window.event;
    var iKeyCode = oEvent.keyCode;
    if (iKeyCode == 8 || iKeyCode == 46) {
        this.autoComplete.onTextChange(false); /* without autocomplete */
    }
    else if (iKeyCode < 32 || (iKeyCode >= 33 && iKeyCode <= 46) || (iKeyCode >= 112 && iKeyCode <= 123)) {
        //ignore
    }
    else {
        this.autoComplete.onTextChange(true); /* with autocomplete */
    }
};

autoComplete.prototype.positionSuggest = function() /* to calculate the appropriate poistion of the dropdown */
{
    var oNode = this.oText;
    var x = 0, y = oNode.offsetHeight;

    while (oNode.offsetParent && oNode.offsetParent.tagName.toUpperCase() != 'BODY') {
        x += oNode.offsetLeft;
        y += oNode.offsetTop;
        oNode = oNode.offsetParent;
    }

    x += oNode.offsetLeft;
    y += oNode.offsetTop;

    this.oDiv.style.top = y + "px";
    this.oDiv.style.left = x + "px";
}

autoComplete.prototype.onTextChange = function(bTextComplete) {
    var txt = this.oText.value;
    var oThis = this;
    this.cur = -1;

    if (txt.length > 0) {
        while (this.oDiv.hasChildNodes())
            this.oDiv.removeChild(this.oDiv.firstChild);

        var aStr = new Array();
        this.db.getMatches(txt, aStr, this.maxSize);
        if (!aStr.length) { this.hideSuggest; return }
        if (bTextComplete) this.textComplete(aStr[0]);
        this.positionSuggest();

        for (i in aStr) {
            var oNew = document.createElement('div');
            this.oDiv.appendChild(oNew);
            oNew.onmouseover =
          oNew.onmouseout =
          oNew.onmousedown = function(oEvent) {
              oEvent = window.event || oEvent;
              oSrcDiv = oEvent.target || oEvent.srcElement;

              //debug :window.status=oEvent.type;
              if (oEvent.type == "mousedown") {
                  oThis.oText.value = this.innerHTML;
              }
              else if (oEvent.type == "mouseover") {
                  this.className = "over";
              }
              else if (oEvent.type == "mouseout") {
                  this.className = "";
              }
              else {
                  this.oText.focus();
              }
          };
            oNew.innerHTML = aStr[i];
        }

        this.oDiv.style.visibility = "visible";
    }
    else {
        this.oDiv.innerHTML = "";
        this.oDiv.style.visibility = "hidden";
    }
};

// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%