var currentColDropZone = {pid:0, dtype:0}
var currentDragOrigin = {pid:0, dtype:0}
var transferCount = 0;
var currentPlanet = {pid:0, obj:null, cname:''};

function SetCurrColDropZone(pid, dtype)
{
	currentColDropZone.pid = pid;
	currentColDropZone.dtype = dtype; 
//	document.getElementById("tmp").innerHTML = currentColDropZone.pid+':'+currentColDropZone.dtype+
//	'--'+currentDragOrigin.pid+':'+currentDragOrigin.dtype;
}

function SetDragOrigin(pid, dtype)
{
	currentDragOrigin.pid = pid;
	currentDragOrigin.dtype = dtype; 
//	document.getElementById("tmp").innerHTML = currentColDropZone.pid+':'+currentColDropZone.dtype+
//	'--'+currentDragOrigin.pid+':'+currentDragOrigin.dtype;
}

function StartPopDragging(e, draggedID)
{
	var continer = document.getElementById('dragContiner');
	if (continer)
	{
		continer.style.visibility = "visible";
		if (e == null) { e = window.event;}
		xcoor = GetMousePos(e)[0];
		ycoor = GetMousePos(e)[1];
		continer.style.left = xcoor + 3 + "px";
		continer.style.top = ycoor + "px";
		pleft = parseInt(continer.style.left);
		ptop = parseInt(continer.style.top);
			
		document.onmousemove = DraggingPopContiner;
		document.onmouseup = StopPopDragging;
		document.onmousedown = disabletext; 
		
		MovePopToContiner(draggedID);
	}
	return false;
}

function DraggingPopContiner(e)
{
	if (e == null) { e = window.event; }
	var sender = (window.event) ? e.srcElement : e.target;
	
	var continer = document.getElementById('dragContiner');
	if (continer)
	{
		mpos = GetMousePos(e);
		continer.style.left=pleft+mpos[0]-xcoor+"px";
		continer.style.top=ptop+mpos[1]-ycoor+"px";
	}
	
	return false;
}

function StopPopDragging(e)
{
	if (e == null) { e = window.event; }
	var sender = (window.event) ? e.srcElement : e.target;
	
	document.onmousemove = null;
	document.onmouseup = null;
	document.onmousedown = null;

	DropPop();
		 
	return false;
}

function DropPop()
{
	var continer = document.getElementById('dragContiner');
	var el = null;

	el = document.getElementById('d'+currentColDropZone.pid+'_'+currentColDropZone.dtype);
	if (el == null || ('d'+currentColDropZone.pid+'_'+currentColDropZone.dtype) == 
		('d'+currentDragOrigin.pid+'_'+currentDragOrigin.dtype))
	{
		return CancelPopTransfer();
	}
	if (el)
	{
		var tmpColDropZone = {pid:0, dtype:0};
		tmpColDropZone.pid = currentColDropZone.pid;
		tmpColDropZone.dtype = currentColDropZone.dtype;
		if (currentDragOrigin.pid != currentColDropZone.pid)
		{
            return CancelPopTransfer();

            /*            
			if (confirm('Transfer '+transferCount+' population?'))
			{
				currentColDropZone.pid = tmpColDropZone.pid;
				currentColDropZone.dtype = tmpColDropZone.dtype;
				var img = document.createElement("IMG");
				img.src = "/img/loading.gif";
				img.className = "lpadding10";
				img.id = "loadingimg";
		
				continer.appendChild(img);
				xajax_ColoniesModule_TransferPopulation(
					'errorDialog', 
					currentDragOrigin.pid, 
					currentColDropZone.pid, 
					transferCount, 
					currentDragOrigin.dtype, 
					currentColDropZone.dtype, 
					'd'+currentColDropZone.pid+'_'+currentColDropZone.dtype);
			
				return false;
			}
			else
			{
				return CancelPopTransfer();
			}
			*/
		}
		else
		{
			currentColDropZone.pid = tmpColDropZone.pid;
			currentColDropZone.dtype = tmpColDropZone.dtype;
			var img = document.createElement("IMG");
			img.src = "/img/loading.gif";
			img.className = "lpadding10";
			img.id = "loadingimg";
		
			continer.appendChild(img);
			xajax_ColoniesModule_TransferPopulation(
				'errorDialog', 
				currentDragOrigin.pid, 
				currentColDropZone.pid, 
				transferCount, 
				currentDragOrigin.dtype, 
				currentColDropZone.dtype, 
				'd'+currentColDropZone.pid+'_'+currentColDropZone.dtype);
			
			return false;
		}
	}
}

function MovePopToContiner(draggedID)
{
	var continer = document.getElementById('dragContiner');
	var dragged = document.getElementById(draggedID);
	
	var owner = dragged.parentNode;
	if (owner.nodeType == 1 && owner.tagName == "DIV")
	{
		SetDragOrigin(GetDraggedInfo(owner.id)[0],GetDraggedInfo(owner.id)[1]);
	}
	var from = document.getElementById('d'+currentDragOrigin.pid+'_'+currentDragOrigin.dtype);
	if (from && continer && dragged)
	{
		var startMove = false;
		var i = 0;
		transferCount = 0;
		while (i < from.childNodes.length)
		{
			if (from.childNodes[i] == dragged)
			{
				startMove = true;
			}	
			if (startMove && from.childNodes[i].nodeType == 1 && from.childNodes[i].tagName == "DIV")
			{
				var el = from.childNodes[i];
				from.removeChild(el);
				continer.appendChild(el);
				el.clasName = "popgrey";
				transferCount++;
			}
			else
			{
				i++;
			}
		} 
	}
	return false;	
}

function MovePopFromContiner(elid, dtype)
{
	var continer = document.getElementById('dragContiner');
	var to = document.getElementById(elid);
	
	var i = 0;
	while (i < continer.childNodes.length)
	{
		if (continer.childNodes[i].nodeType == 1 && continer.childNodes[i].tagName == "DIV")
		{
			var el = continer.childNodes[i];
			continer.removeChild(el);
			to.appendChild(el);
			if (dtype == 1)
				el.className = "farmer";
			if (dtype == 2)
				el.className = "worker";
			if (dtype == 3)
				el.className = "researcher";
		}
		else
		{
			i++;
		}
	} 
	return false;	
}

function CancelPopTransfer()
{
	transferCount = 0;
	var continer = document.getElementById('dragContiner');
	var img = document.getElementById("loadingimg");
	if (img) continer.removeChild(img);
	MovePopFromContiner('d'+currentDragOrigin.pid+'_'+currentDragOrigin.dtype, currentDragOrigin.dtype);
	continer.style.visibility = "hidden";
	continer.innerHTML = "";
	 
	return false;	
}

function SameSystemPopTransfer(elid, droptype)
{
	transferCount = 0;

	var continer = document.getElementById('dragContiner');
	var img = document.getElementById("loadingimg");
	if (img) continer.removeChild(img);

	MovePopFromContiner(elid, droptype);
	
	continer.style.visibility = "hidden";
	continer.innerHTML = "";
	xajax_ColoniesModule_GetColonyInfo(
		'colonyInfo',
		GetDraggedInfo(elid)[0]);
	xajax_EmpireComponent_GetEmpireInfo('empire_info');

	xajax_ColoniesModule_UpdateColonyRowInfo(
		'',
		'',
		'',
		'b'+GetDraggedInfo(elid)[0],
		GetDraggedInfo(elid)[0]);

	xajax_ColoniesModule_UpdateColonyRowInfo(
		'',
		'',
		'',
		'b'+currentDragOrigin.pid,
		currentDragOrigin.pid);
	 
	img = null;
	img = document.getElementById('i'+GetDraggedInfo(elid)[0]);
	if (img)
	  SelectPlanet(GetDraggedInfo(elid)[0], img, 'tmiddle rpadding5 cpointer icon');

	return false;
}

function SystemsPopTransfer(elid, droptype)
{
	transferCount = 0;

	var continer = document.getElementById('dragContiner');
	var img = document.getElementById("loadingimg");
	if (img) continer.removeChild(img);

	continer.style.visibility = "hidden";
	continer.innerHTML = "";
	xajax_ColoniesModule_GetColonyInfo(
		'colonyInfo',
		GetDraggedInfo(elid)[0]);
	xajax_EmpireComponent_GetEmpireInfo('empire_info');
		
	UpdatePopulationBlocks(GetDraggedInfo(elid)[0]);
	UpdatePopulationBlocks(currentDragOrigin.pid);
	  		
	img = null;
	img = document.getElementById('i'+GetDraggedInfo(elid)[0]);
	if (img)
	  SelectPlanet(GetDraggedInfo(elid)[0], img, 'tmiddle rpadding5 cpointer icon');

	return false;
}

function GetDraggedInfo(elid)
{
	var sp = elid.substr(1).split("_"); 
	return sp;	
}

function ShowTransferInfo(elid, srcelid)
{
	var el = document.getElementById(elid);
	var src = document.getElementById(srcelid);
	if (el && src)
	{
		var mp = findPos(src);
		el.style.left = mp[0]+"px";
		el.style.top = mp[1]+src.offsetHeight+"px";
    	el.style.display = "block";
	    el.style.visibility = "visible";
	}
}

function SelectPlanet(pid, obj, cname)
{
	if (currentPlanet.obj != null)
	{
		currentPlanet.obj.className = currentPlanet.cname;
		var sp = document.getElementById('i'+currentPlanet.pid+'span');
		if (sp)
		{
			sp.className = 'tleft size12 arial yellow1';
		}
	}
	currentPlanet.pid = pid;
	currentPlanet.obj = obj;
	currentPlanet.cname = obj.className;
	obj.className = cname;
	
	var sp = document.getElementById('i'+pid+'span');
	if (sp)
	{
		sp.className = 'tleft size12 arial yellow3';
	}
}

function UpdatePopulationBlocks(pid)
{
	xajax_ColoniesModule_UpdateColonyRowInfo(
		'd'+pid+'_1',
		'd'+pid+'_2',
		'd'+pid+'_3',
		'b'+pid,
		pid);
}

function SelectFirstPlanet(pid)
{
	if (currentPlanet.obj == null)
	{
		var el = document.getElementById('i'+pid);
		if (el)
		{
			SelectPlanet(pid, el, 'tmiddle rpadding5 cpointer icon');
			xajax_ColoniesModule_GetColonyInfo('colonyInfo',pid);
		}
	}
}

function HideAddedBuilding(building)
{
	var el = document.getElementById("tr"+building);
	if (el)
	{
		el.style.visibility = "hidden";
		el.style.display = "none";
	}
}