combobox.htc

jsp-ajax实例学习好例子

//作者：宝玉
//Mail:[e-mail]
//描述：宝贝即时寻呼
//日期：2003-01-16

<public:component tagname="ComboBox" literalcontent="true">
<public:method name="CreateComboBox" internalname="f_PublicCreateComboBox" />
<public:method name="CreateComboBoxIpt" internalname="f_PublicCreateComboBoxIpt" />
<public:method name="CreateDropDown" internalname="f_PublicCreateDropDown" />
<public:method name="CreateDropList" internalname="f_PublicCreateDropList" />
<public:method name="CreatePopup" internalname="f_PublicCreatePopup" />

<public:attach event="oncontentready" onevent="f_CreateComboBox()" />
<SCRIPT LANGUAGE="JScript">
var oPopup = null;
var ComboBox = null;
var ComboBoxIpt = null;
var DropDown = null;
var DropList = null;
var aNodes = new Array();
function f_CreateComboBox()
{
	aNodes = f_CreateNodes(element.innerHTML);
	DropList = f_PublicCreateDropList();
	f_PublicCreateDropListData(aNodes);
	ComboBox = f_PublicCreateComboBox();
	ComboBoxIpt = f_PublicCreateComboBoxIpt();
	DropDown = f_PublicCreateDropDown();
	oPopup = f_PublicCreatePopup()
	ComboBox.attachEvent("onmouseover",fnMouseover);
	ComboBox.attachEvent("onmouseout",fnMouseout);
	DropDown.attachEvent("onmousedown",fnMousedown);
	ComboBoxIpt.attachEvent("onfocus",ComboBoxFocus);
	ComboBoxIpt.attachEvent("onblur",ComboBoxBlur);
	ComboBoxIpt.attachEvent("onkeyup",ComboBoxKeyup);
	window.document.attachEvent("onclick", chkstat);
}
function f_PublicCreateComboBox()
{
	var oTable = window.document.createElement("TABLE");
	oTable.cellSpacing = 1;
	oTable.cellPadding = 0;
	oTable.id = "AXTeamComboBox"+uniqueID;
	oTable.style.display = "inline";
	oTable.border = 0;
	oTable.bgColor = "#FFFFFF";
	element.insertAdjacentElement("BeforeBegin",oTable);
	oTable.ComboBoxFocus = false;
	return oTable;
}
function f_PublicCreateComboBoxIpt()
{
	var oInput = window.document.createElement("INPUT");
	oInput.type = "text";
	oInput.style.border = 0;
	oInput.style.width = element.width;
	oInput.style.height = 15;
	oInput.id = "AXTeamComboBoxIpt"+uniqueID;
	ComboBox.insertRow().insertCell().appendChild(oInput);
	ComboBox.rows[0].bgColor = "#FFFFFF";
	return oInput;
}
function f_PublicCreateDropDown()
{
	var oTable = window.document.createElement("TABLE");
	oTable.cellSpacing = 0;
	oTable.cellPadding = 0;
	oTable.id = "AXTeamDropDown"+uniqueID;
	oTable.border = 0;
	oTable.bgColor="#DBD8D1";
	oTable.style.cssText = "display:inline;cursor:default;";
	oTable.attachEvent("onselectstart", fnCancel);
	var otd = oTable.insertRow().insertCell();
	otd.style.cssText = "font-family: webdings;font-size:8px;text-align: center;width:13px;height:17px;";
	otd.innerText = "6";
	ComboBox.rows[0].insertCell().appendChild(oTable);
	return oTable;
}
function f_PublicCreateDropList()
{
	var oTable = window.document.createElement("TABLE");
	oTable.cellSpacing = 1;
	oTable.cellPadding = 0;
	oTable.border = 0;
	oTable.bgColor="#FFFFFF";
	oTable.style.cssText = "font-size:9pt;cursor:default;border:1px solid #666666;";
	oTable.attachEvent("onselectstart", fnCancel);
	return oTable;
}
function f_PublicCreateDropListData(aNodes,redata)
{
	if(!redata)
		var re=new RegExp("^");
	else
		var re=new RegExp("^"+redata,"i");
	var otd = null;
	var No=DropList.rows.length;
        for(i=0;i<No;i++)DropList.deleteRow();
	for(var i=0;i<aNodes.length;i++)
	{
		if(re.test(aNodes[i])==true)
		{
			otd = DropList.insertRow().insertCell();
			otd.style.height = "12px";
			otd.innerHTML = aNodes[i];
			otd.attachEvent("onmouseover",DropListOver);
			otd.attachEvent("onmouseout",DropListOut);
			otd.attachEvent("onclick",DropListClick);
		}
	}

}
function f_PublicCreatePopup()
{
	var oSpan = element.document.createElement("span");
	oSpan.style.cssText = "	position:absolute;display:none;cursor:default;z-index:100;";
	window.document.body.appendChild(oSpan);
	return oSpan;
}
function f_CreateNodes(htmlText)
{
	var oSpan = element.document.createElement("span");
	oSpan.innerHTML = htmlText;
	var xNodes = oSpan.childNodes;
	var Nodes = new Array();
	var nNumNodes = (xNodes == null) ? 0 : xNodes.length;
	for (var nIndex = 0; nIndex < nNumNodes; nIndex++)
	{
		var node = xNodes[nIndex];
		if (node != null)
			Nodes = Nodes.concat(f_CreateDropListItems(node));
	}
	return Nodes;
}
function f_CreateDropListItems(oNode)
{
	var rNodes;
	var szTagName = (oNode.tagName == null) ? "" : oNode.tagName.toLowerCase();
	if(szTagName == "option")
	{
		var szText = oNode.innerText;
		rNodes = new Array(szText);
	}
	else
		rNodes = new Array();
	return rNodes;
}
function fnMouseover()
{
	if(ComboBox.ComboBoxFocus) return;
	overstat();
}
function fnMouseout()
{
	if(ComboBox.ComboBoxFocus) return;
	defaultstat();
}
function fnMousedown()
{
	if(event.srcElement != ComboBoxIpt)
	{
		if(oPopup.style.display == '')
		{
			oPopup.style.display = 'none';
			DropDown.style.color = "#000000";
			return;
		}
		f_PublicCreateDropListData(aNodes)
		ComboBoxIpt.select();
		DropDown.style.color = "#FFFFFF";
	}
	oPopup.appendChild(DropList);
	oPopup.style.width = (oPopup.offsetWidth < ComboBox.offsetWidth) ? ComboBox.offsetWidth : oPopup.offsetWidth;
	oPopup.style.left = getx(ComboBox);
	oPopup.style.top = gety(ComboBox)+19;
	oPopup.style.display = '';
	oPopup.children[0].width = "100%";
	ComboBox.ComboBoxFocus = true;
}
function overstat()
{
	ComboBox.bgColor="#0A246A";
	DropDown.bgColor="#B6BDD2";
	DropDown.style.color = "#000000";
}
function defaultstat()
{
	ComboBox.bgColor="#FFFFF";
	DropDown.bgColor="#DBD8D1";
	DropDown.style.color = "#000000";
}
function DropListOver()
{
	obj = event.srcElement;
	obj.bgColor='highlight';obj.style.color='#FFFFFF';obj.style.cursor='default';
}
function DropListOut()
{
	obj = event.srcElement;
	obj.bgColor='#FFFFFF';obj.style.color='#000000';
}
function DropListClick()
{
	obj = event.srcElement;
	ComboBoxIpt.value = obj.innerText;
	oPopup.style.display = "none";
	ComboBoxIpt.select();
	DropDown.style.color = '#000000';
}
function ComboBoxFocus()
{
	if(ComboBox.ComboBoxFocus) return;
	ComboBox.ComboBoxFocus = true;
	overstat();
}
function ComboBoxBlur()
{
	if(ComboBox.ComboBoxFocus) return;
	defaultstat();
}
function ComboBoxKeyup()
{
	f_PublicCreateDropListData(aNodes,ComboBoxIpt.value);
	fnMousedown();
	addOption();
}
function addOption(){
 if(event.keyCode==13)
 {
	aNodes[aNodes.length] = ComboBoxIpt.value;
 }  
}

function chkstat()
{
	var oEl = event.srcElement;
	while( null != oEl && oEl != ComboBox)
	{
		oEl = oEl.parentElement;
	}
	if(oEl == null)
	{
		defaultstat();
		ComboBox.ComboBoxFocus = false;
		oPopup.style.display = "none";
	}
}

function fnCancel()
{
	return false;
}
function getx(e)
{
	var l=e.offsetLeft;
	while(e=e.offsetParent){
		l+=e.offsetLeft;
	}
	return l;
}
function gety(e)
{
	var t=e.offsetTop;
	while(e=e.offsetParent){
		t+=e.offsetTop;
	}
	return t;
}
</SCRIPT>