//general
//for example: instead of each module writing out script found in modulemaxmin_onclick have the functionality cached
//

var zhd_col_delimiter = string.fromcharcode(16);
var zhd_row_delimiter = string.fromcharcode(15);
var __zhd_m_bpageloaded = false;

window.onload = __zhd_page_onload;

function __zhd_clientapienabled()
{
	return typeof(zhd) != 'undefined';
}


function __zhd_page_onload()
{
	if (__zhd_clientapienabled())
	{
		var sloadhandlers = zhd.getvar('__zhd_pageload');
		if (sloadhandlers != null)
			eval(sloadhandlers);
		
		zhd.dom.attachevent(window, 'onscroll', __zhd_bodyscroll);
	}
	__zhd_m_bpageloaded = true;
}

function __zhd_keydown(ikeycode, sfunc, e)
{
	if (e == null)
		e = window.event;

	if (e.keycode == ikeycode)
	{
		eval(unescape(sfunc));
		return false;
	}
}

function __zhd_bodyscroll() 
{
	var of=document.forms[0];	
	if (__zhd_clientapienabled() && __zhd_m_bpageloaded)
		of.scrolltop.value=document.documentelement.scrolltop ? document.documentelement.scrolltop : zhd.dom.getbytagname("body")[0].scrolltop;
}

function __zhd_setscrolltop(itop)
{
	if (__zhd_clientapienabled())
	{
		if (itop == null)
			itop = document.forms[0].scrolltop.value;
	
		var sid = zhd.getvar('scrolltocontrol');
		if (sid != null && sid.length > 0)
		{
			var octl = zhd.dom.getbyid(sid);
			if (octl != null)
			{
				itop = zhd.dom.positioning.elementtop(octl);
				zhd.setvar('scrolltocontrol', '');
			}
		}
		window.scrollto(0, itop);
	}
}

//focus logic
function __zhd_setinitialfocus(sid)
{
	var octl = zhd.dom.getbyid(sid);	
	if (octl != null && __zhd_canreceivefocus(octl))
		octl.focus();
}	

function __zhd_canreceivefocus(e)
{
	//probably should call getcomputedstyle for classes that cause item to be hidden
	if (e.style.display != 'none' && e.tabindex > -1 && e.disabled == false && e.style.visible != 'hidden')
	{
		var eparent = e.parentelement;
		while (eparent != null && eparent.tagname != 'body')
		{
			if (eparent.style.display == 'none' || eparent.disabled || eparent.style.visible == 'hidden')
				return false;
			eparent = eparent.parentelement;
		}
		return true;
	}
	else
		return false;
}

//max/min script
function __zhd_containermaxmin_onclick(olnk, scontentid)
{
	var ocontent = zhd.dom.getbyid(scontentid);
	if (ocontent != null)
	{
		var obtn = olnk.childnodes[0];
		var scontainerid = olnk.getattribute('containerid');
		var scookieid = olnk.getattribute('cookieid');
		var scurrentfile = obtn.src.tolowercase().substr(obtn.src.lastindexof('/'));
		var smaxfile;
		var smaxicon;
		var sminicon;

		if (zhd.getvar('min_icon_' + scontainerid))
			sminicon = zhd.getvar('min_icon_' + scontainerid);
		else
			sminicon = zhd.getvar('min_icon');

		if (zhd.getvar('max_icon_' + scontainerid))
			smaxicon = zhd.getvar('max_icon_' + scontainerid);
		else
			smaxicon = zhd.getvar('max_icon');

		smaxfile = smaxicon.tolowercase().substr(smaxicon.lastindexof('/'));

		var inum = 5;
		if (olnk.getattribute('animf') != null)
			inum = new number(olnk.getattribute('animf'));
			
		if (scurrentfile == smaxfile)
		{
			obtn.src = sminicon;				
			//ocontent.style.display = '';
			zhd.dom.expandelement(ocontent, inum);
			obtn.title = zhd.getvar('min_text');
			if (scookieid != null)
			{
				if (zhd.getvar('__zhd_' + scontainerid + ':defminimized') == 'true')
					zhd.dom.setcookie(scookieid, 'true', 365);
				else
					zhd.dom.deletecookie(scookieid);
			}
			else
				zhd.setvar('__zhd_' + scontainerid + '_visible', 'true');
		}
		else
		{
			obtn.src = smaxicon;				
			//ocontent.style.display = 'none';
			zhd.dom.collapseelement(ocontent, inum);
			obtn.title = zhd.getvar('max_text');
			if (scookieid != null)
			{
				if (zhd.getvar('__zhd_' + scontainerid + ':defminimized') == 'true')
					zhd.dom.deletecookie(scookieid);
				else
					zhd.dom.setcookie(scookieid, 'false', 365);				
			}
			else
				zhd.setvar('__zhd_' + scontainerid + '_visible', 'false');			
		}
		
		return true;	//cancel postback
	}
	return false;	//failed so do postback
}

function __zhd_help_onclick(shelpid)
{
	var ohelp = zhd.dom.getbyid(shelpid);
	if (ohelp != null)
	{
		if (ohelp.style.display == 'none')
			ohelp.style.display = '';
		else
			ohelp.style.display = 'none';

		return true;	//cancel postback
	}
	return false;	//failed so do postback
}

function __zhd_sectionmaxmin(obtn, scontentid)
{
	var ocontent = zhd.dom.getbyid(scontentid);
	if (ocontent != null)
	{
		var smaxicon = obtn.getattribute('max_icon');
		var sminicon = obtn.getattribute('min_icon');
		var bcallback = obtn.getattribute('userctr') != null;
		var sval;
		if (ocontent.style.display == 'none')
		{
			obtn.src = sminicon;				
			ocontent.style.display = '';
			if (bcallback)
			    sval = 'true';
			else
			    zhd.setvar(obtn.id + ':exp', 1);
		}
		else
		{
			obtn.src = smaxicon;				
			ocontent.style.display = 'none';
			if (bcallback)
			    sval = 'false';
			else
                zhd.setvar(obtn.id + ':exp', 0);
		}
		if (bcallback)
		    zhdcore.setuserprop(obtn.getattribute('userctr'), obtn.getattribute('userkey'), sval, null);
		return true;	//cancel postback
	}
	return false;	//failed so do postback
}

//drag n drop
function __zhd_enabledragdrop()
{
	var aryconts = zhd.getvar('__zhd_dragdrop').split(";");	
	var arytitles;

	for (var i=0; i < aryconts.length; i++)
	{
		arytitles = aryconts[i].split(" ");
		if (arytitles[0].length > 0)
		{			
			var octr = zhd.dom.getbyid(arytitles[0]);
			var otitle = zhd.dom.getbyid(arytitles[1]);
			if (octr != null && otitle != null)
			{
				octr.setattribute('moduleid', arytitles[2]);
				zhd.dom.positioning.enabledraganddrop(octr, otitle, '__zhd_dragcomplete()', '__zhd_dragover()');
			}	
		}
	}
}

var __zhd_oprevselpane;
var __zhd_oprevselmodule;
var __zhd_drageventcount=0;
function __zhd_dragover()
{
	__zhd_drageventcount++;
	if (__zhd_drageventcount % 75 != 0)	//only calculate position every 75 events
		return;
	
	var ocont = zhd.dom.getbyid(zhd.dom.positioning.dragctr.contid);

	var opane = __zhd_getmostselectedpane(zhd.dom.positioning.dragctr);
		
	if (__zhd_oprevselpane != null)	//reset previous pane's border
		__zhd_oprevselpane.pane.style.border = __zhd_oprevselpane.origborder;

	if (opane != null)
	{		
		__zhd_oprevselpane = opane;
		opane.pane.style.border = '4px double ' + zhd_highlight_color;
		var iindex = __zhd_getpanecontrolindex(ocont, opane);

		var oprevctl;
		var onextctl;
		for (var i=0; i<opane.controls.length; i++)
		{
			if (iindex > i && opane.controls[i].id != ocont.id)
				oprevctl = opane.controls[i];
			if (iindex <= i && opane.controls[i].id != ocont.id)
			{
				onextctl = opane.controls[i];
				break;
			}
		}			
		
		if (__zhd_oprevselmodule != null)
			zhd.dom.getnontextnode(__zhd_oprevselmodule.control).style.border = __zhd_oprevselmodule.origborder;
			

		if (onextctl != null)
		{
			__zhd_oprevselmodule = onextctl;
			zhd.dom.getnontextnode(onextctl.control).style.bordertop = '5px groove ' + zhd_highlight_color;
		}
		else if (oprevctl != null)
		{
			__zhd_oprevselmodule = oprevctl;
			zhd.dom.getnontextnode(oprevctl.control).style.borderbottom = '5px groove ' + zhd_highlight_color;
		}
	}
}

function __zhd_dragcomplete()
{
	var octl = zhd.dom.getbyid(zhd.dom.positioning.dragctr.contid);
	var smoduleid = octl.getattribute('moduleid');
	
	if (__zhd_oprevselpane != null)
		__zhd_oprevselpane.pane.style.border = __zhd_oprevselpane.origborder;

	if (__zhd_oprevselmodule != null)
		zhd.dom.getnontextnode(__zhd_oprevselmodule.control).style.border = __zhd_oprevselmodule.origborder;
		
	var opane = __zhd_getmostselectedpane(zhd.dom.positioning.dragctr);
	var iindex;
	if (opane == null)
	{
		var opanes = __zhd_panes();
		for (var i=0; i<opanes.length; i++)
		{
			if (opanes[i].id == octl.parentnode.id)
				opane = opanes[i];
		}
	}	
	if (opane != null)
	{
		iindex = __zhd_getpanecontrolindex(octl, opane);
		__zhd_movetopane(opane, octl, iindex);

		zhd.callpostback('movetopane', 'moduleid=' + smoduleid, 'pane=' + opane.panename, 'order=' + iindex * 2); 
	}
}

function __zhd_movetopane(opane, octl, iindex)
{

	if (opane != null)
	{
		var aryctls = new array();
		for (var i=iindex; i<opane.controls.length; i++)
		{
			if (opane.controls[i].control.id != octl.id)
				aryctls[aryctls.length] = opane.controls[i].control;

			zhd.dom.removechild(opane.controls[i].control);
		}
		zhd.dom.appendchild(opane.pane, octl);
		octl.style.top=0;
		octl.style.left=0;
		octl.style.position = 'relative';
		for (var i=0; i<aryctls.length; i++)
		{
			zhd.dom.appendchild(opane.pane, aryctls[i]);
		}
		__zhd_refreshpanes();
	}
	else
	{
		octl.style.top=0;
		octl.style.left=0;
		octl.style.position = 'relative';
	}
}

function __zhd_refreshpanes()
{
	var arypanes = zhd.getvar('__zhd_panes').split(';');
	var arypanenames = zhd.getvar('__zhd_panenames').split(';');
	__zhd_m_arypanes = new array();
	for (var i=0; i<arypanes.length; i++)
	{
		if (arypanes[i].length > 0)
			__zhd_m_arypanes[__zhd_m_arypanes.length] = new __zhd_pane(zhd.dom.getbyid(arypanes[i]), arypanenames[i]);
	}
}

var __zhd_m_arypanes;
var __zhd_m_arymodules;
function __zhd_panes()
{
	if (__zhd_m_arypanes == null)
	{
		__zhd_m_arypanes = new array();
		__zhd_refreshpanes();
	}
	return __zhd_m_arypanes;
}

function __zhd_modules(smoduleid)
{
	if (__zhd_m_arymodules == null)
		__zhd_refreshpanes();
	
	return __zhd_m_arymodules[smoduleid];
}

function __zhd_getmostselectedpane(ocontent)
{
	var ocdims = new zhd.dom.positioning.dims(ocontent);
	var itopscore=0;
	var iscore;
	var otoppane;
	for (var i=0; i<__zhd_panes().length; i++)
	{
		var opane = __zhd_panes()[i];
		var opdims = new zhd.dom.positioning.dims(opane.pane);
		iscore = zhd.dom.positioning.elementoverlapscore(opdims, ocdims);
		
		if (iscore > itopscore)
		{
			itopscore = iscore;
			otoppane = opane;
		}
	}
	return otoppane;
}

function __zhd_getpanecontrolindex(ocontent, opane)
{
	if (opane == null)
		return;
	var ocdims = new zhd.dom.positioning.dims(ocontent);
	var octl;
	if (opane.controls.length == 0)
		return 0;
	for (var i=0; i<opane.controls.length; i++)
	{
		octl = opane.controls[i];
		var oidims = new zhd.dom.positioning.dims(octl.control);
		if (ocdims.t < oidims.t)
			return octl.index;
	}
	if (octl != null)
		return octl.index+1;
	else
		return 0;
}

//objects
function __zhd_pane(ctl, spanename)
{
	this.pane = ctl;
	this.id = ctl.id;
	this.controls = new array();
	this.origborder = ctl.style.border;
	this.panename = spanename;
	
	var iindex = 0;
	var strmoduleorder='';
	for (var i=0; i<ctl.childnodes.length; i++)
	{
		var onode = ctl.childnodes[i];
		if (zhd.dom.isnontextnode(onode))	
		{
			if (__zhd_m_arymodules == null)
				__zhd_m_arymodules = new array();

			//if (onode.tagname == 'a' && onode.childnodes.length > 0)
			//	onode = onode.childnodes[0];	//zhd now embeds anchor tag 
				
			var smoduleid = onode.getattribute('moduleid');
			if (smoduleid != null && smoduleid.length > 0)
			{
				strmoduleorder += smoduleid + '~';
				this.controls[this.controls.length] = new __zhd_panecontrol(onode, iindex);
				__zhd_m_arymodules[smoduleid] = onode.id;
				iindex+=1;
			}
		}
	}
	this.moduleorder = strmoduleorder;

}

function __zhd_panecontrol(ctl, iindex)
{
	this.control = ctl;
	this.id = ctl.id;
	this.index = iindex;
	this.origborder = ctl.style.border;
	
}

//move towards zhdcore ns.  right now only for personalization
function __zhdcore()
{
    this.getuserval = 0;
    this.setuserval = 1;
}

__zhdcore.prototype = {
getuserprop: function(snamectr, skey, pfunc) {
    this._dousercallback(zhdcore.getuserval, snamectr, skey, null, new zhdcore.userpropargs(snamectr, skey, pfunc));
},

setuserprop: function(snamectr, skey, sval, pfunc) {
    this._dousercallback(zhdcore.setuserval, snamectr, skey, sval, new zhdcore.userpropargs(snamectr, skey, pfunc));
},

_dousercallback: function(itype, snamectr, skey, sval, pfunc) {
    if (zhd && zhd.xmlhttp)
    {
        var spack = itype + col_delimiter + snamectr + col_delimiter + skey + col_delimiter + sval;
        zhd.xmlhttp.docallback('__page',spack,zhdcore._callbacksuccess,pfunc,zhdcore._callbackfail,null,true,null,0);
    }
    else
        alert('client personalization not enabled');
},

_callbacksuccess: function (result, ctx, req) {
    if (ctx.pfunc)
        ctx.pfunc(ctx.namingctr, ctx.key, result);
},

_callbackfail: function (result, ctx) {
	window.status = result;
}
}

__zhdcore.prototype.userpropargs = function(snamectr, skey, pfunc)
{
    this.namingctr = snamectr;
	this.key = skey;
	this.pfunc = pfunc;
}

var zhdcore = new __zhdcore();