// gzListBox.cpp : implementation file
//

#include "stdafx.h"
#include "sp.h"
#include "gzListBox.h"
#include <crtdbg.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CgzListBox

CgzListBox::CgzListBox()
{
	plist = new CStringList[2];//2 column string list
	
	//default is multi select
	//FUTURE: programatically determine if single or multi
	m_bSingleSelect=false;
	
	
	m_nSelectionCount=0;
	//Color related code
	m_clrText = RGB( 0, 0, 0 );
	//get the background color so it will not
	//look like an editable control and more like a
	//chooser control
	m_clrBkgnd = GetSysColor(COLOR_3DFACE);
	m_brBkgnd.CreateSolidBrush( GetSysColor(COLOR_3DFACE) );
	
	
	//font related code
	::GetObject((HFONT)GetStockObject(DEFAULT_GUI_FONT),sizeof(m_lf),&m_lf);
	m_lf.lfWeight = FW_SEMIBOLD ;//FW_MEDIUM,FW_SEMIBOLD,FW_BOLD,FW_BLACK
	m_font.DeleteObject();
	BOOL bCreated = m_font.CreateFontIndirect(&m_lf);
	
	ASSERT(bCreated);
}

CgzListBox::~CgzListBox()
{
	delete[] plist;
}


BEGIN_MESSAGE_MAP(CgzListBox, CListBox)
//{{AFX_MSG_MAP(CgzListBox)
ON_WM_CTLCOLOR_REFLECT()
ON_CONTROL_REFLECT(LBN_KILLFOCUS, OnKillfocus)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CgzListBox message handlers
//***********************  Add a row ******************
void CgzListBox::AddRow(CString text, CString ID)
{
	SetFont(&m_font,FALSE);
	//add the visible text part and use the return value
	//to place the id number in the list of pointers
	//since were using the ID number returned by the combo
	//it's irrelevant whether the combo is in sort mode or not
	int x=AddString(text);
	
	if(x==0)
	{
		plist[0].AddHead(text);
		plist[1].AddHead(ID);
	}
	else
		if(x == (GetCount()-1))
		{
			plist[0].AddTail(text);
			plist[1].AddTail(ID);
		}
		else	
		{
			plist[0].InsertBefore(plist[0].FindIndex(x), text);
			plist[1].InsertBefore(plist[1].FindIndex(x), ID);
		}
		
}


//******************************************************
//clear the list box completely
//remove all strings
void CgzListBox::Clear()
{
	ResetContent();
	plist[0].RemoveAll();
	plist[1].RemoveAll();
	m_nSelectionCount=0;

	
}

HBRUSH CgzListBox::CtlColor(CDC* pDC, UINT nCtlColor) 
{
	pDC->SetTextColor( m_clrText );    // text
	pDC->SetBkColor( m_clrBkgnd );    // text bkgnd
	return m_brBkgnd;
	
	return NULL;
}



//**************************************************************
//return selected item in range of 0 to number of items selected
//passed integer is irrelevant on a single select
CString CgzListBox::GetSelectedItem(int nItem)
{
	//return hidden value of item number nItem
	//or zero if failed
if(!m_bIsSingleSelect)	
	return plist[1].GetAt(plist[1].FindIndex(aryListBoxSel.GetAt(nItem)));

//or if it's single select do this:
	int x=GetCurSel();
	if(x!=LB_ERR)
	  return plist[1].GetAt(plist[1].FindIndex(x));
//failing that return nothing
	return "";
}


//return "visible" column item # nItem
CString CgzListBox::GetSelectedItemVisible(int nItem)
{
	//return visible value of item number nItem
	//or empty if failed
if(!m_bIsSingleSelect)	
	return plist[0].GetAt(plist[0].FindIndex(aryListBoxSel.GetAt(nItem)));

//or if it's single select do this:
	int x=GetCurSel();
	if(x!=LB_ERR)
	  return plist[0].GetAt(plist[0].FindIndex(x));
//failing that return nothing
	return "";
}





//user has tabbed off of the list box
//rebuild the index list
void CgzListBox::OnKillfocus() 
{

		RebuildIndex();
 }


//returns the number of selected items in the list box
int CgzListBox::SelectionCount()
{

	//Get the count of selected items in the list box
	m_nSelectionCount=GetSelCount();
	
	//single select modification:
	if(m_nSelectionCount==LB_ERR)//means it's a single select
	{
		m_bIsSingleSelect=true;
		m_nSelectionCount=GetCurSel();
		
		//see if there is a selection
		if(m_nSelectionCount==LB_ERR)//means none
			m_nSelectionCount=0;
		else
			m_nSelectionCount=1;//one item selected
	}
	else
		m_bIsSingleSelect=false;
	return m_nSelectionCount;
}


//Select or de-select an item given it's hidden
//ID column - programatically.
bool CgzListBox::Select(CString ID, bool bSelect)
{
	//finds row that matches ID and selects or deselects it
	//There might be a simpler way but I could not find it
	//because stringlist objects do not appear to have
	// a function that returns an index of a given
	// item.  They do return POSITION types but according
	// to the docs that is not to be considered an index
	// value in any way. 
	
	
	
	//assert on an empty ID string if in debug mode
	_ASSERTE(!ID.IsEmpty());
	
	//handle an empty ID string in release mode
	if(ID.IsEmpty())
		return false;
	
	int x;
	POSITION pos;
	//if the list is empty, return
	if(plist[1].IsEmpty()==TRUE) return false;
	
	//set x to the number of items in the list
	x=plist[1].GetCount();
	
	//bail if there is nothing in the list
	if(x==0) return false;
	
	//iterate through the list comparing the id
	//string at each y index location to the passed ID value
	//upon a match we know that y is the index value in the
	//combo box that matches the ID value passed to this function
	
	for(int y=0;y<x;y++)
	{
		
		//will assert if invalid id attempted
		
		pos=plist[1].FindIndex(y);
		
		_ASSERTE(pos!=NULL);
		
		if(pos==NULL)
			return false;
		
		if(ID==plist[1].GetAt(pos))
		{
			if(m_bSingleSelect)
				SetCurSel(y);
			else
				SetSel(y,bSelect ? TRUE:FALSE);//found a match, set the combo to it
			
			return true;
		}
		
	}
	
	
	return false;
	
}


//this is required to build the selection list
//either called by killfocus or called by the
//owner window after a double click to fill the list
//that way.
void CgzListBox::RebuildIndex()
{
	//set the m_nSelectionCount variable
	//and the m_bIsSingleSelect flag
	SelectionCount();

	//only proceed if it's a multiple select
	//otherwise the index is irrelevant
	if(m_bIsSingleSelect) return;

	//clear out any previous values
	aryListBoxSel.RemoveAll();
	
	//bail if there is nothing to set
	if(m_nSelectionCount==0) 
		return;
	
	//size the array to the number of selected items
	aryListBoxSel.SetSize(m_nSelectionCount);

	GetSelItems(m_nSelectionCount, aryListBoxSel.GetData()); 

}