// USBHostDlg.cpp : implementation file
//

#include "stdafx.h"
#include "USBHost.h"
#include "USBHostDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CUSBHostDlg dialog

CUSBHostDlg::CUSBHostDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUSBHostDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUSBHostDlg)
	m_Dirname = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CUSBHostDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUSBHostDlg)

	DDX_Control(pDX, IDC_DIR_TREE, m_tree);

	DDX_Text(pDX, IDC_DIRECT_NAME, m_Dirname);

	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUSBHostDlg, CDialog)
	//{{AFX_MSG_MAP(CUSBHostDlg)
	ON_BN_CLICKED(IDC_LIST_DIRECTORY, OnListDirectory)
	ON_EN_UPDATE(IDC_DIRECT_NAME, OnUpdateDirectName)
	ON_NOTIFY(TVN_ITEMEXPANDED, IDC_DIR_TREE, OnItemexpandedDirTree)
	ON_NOTIFY(TVN_ITEMEXPANDING, IDC_DIR_TREE, OnItemexpandingDirTree)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUSBHostDlg message handlers

BOOL CUSBHostDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	// TODO: Add extra initialization here

		
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CUSBHostDlg::OnListDirectory() 
{
	// TODO: Add your control notification handler code here

	DWORD dwStyle = GetWindowLong(m_tree.m_hWnd,GWL_STYLE);
	dwStyle |= TVS_HASBUTTONS | TVS_HASLINES | TVS_LINESATROOT;
	SetWindowLong(m_tree.m_hWnd,GWL_STYLE,dwStyle);

	if(m_Dirname != "")
	{
		m_hRoot = m_tree.InsertItem((m_Dirname));
	}else
	{
		m_hRoot = m_tree.InsertItem(_T("\\Hard Disk"));
	}
	AddSubDir(m_hRoot);
	m_tree.Expand(m_hRoot,TVE_EXPAND);
}

void CUSBHostDlg::OnUpdateDirectName() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function to send the EM_SETEVENTMASK message to the control
	// with the ENM_UPDATE flag ORed into the lParam mask.
	
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	
}



void CUSBHostDlg::OnItemexpandedDirTree(NMHDR* pNMHDR, LRESULT* pResult) 
{
	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;
	// TODO: Add your control notification handler code here
/*
	TVITEM item = pNMTreeView->itemNew;
    HTREEITEM hChild = m_tree.GetChildItem(item.hItem);
	while(hChild)
	{
		AddSubDir(hChild);
		hChild = m_tree.GetNextItem(hChild,TVGN_NEXT);
	}
*/
	*pResult = 0;
}

void CUSBHostDlg::OnItemexpandingDirTree(NMHDR* pNMHDR, LRESULT* pResult) 
{
	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;
	// TODO: Add your control notification handler code here
	
	TVITEM item = pNMTreeView->itemNew;
    HTREEITEM hChild = m_tree.GetChildItem(item.hItem);
	while(hChild)
	{
		AddSubDir(hChild);
		hChild = m_tree.GetNextItem(hChild,TVGN_NEXT);
	}

	*pResult = 0;
}

// Define functions
void CUSBHostDlg::AddSubDir(HTREEITEM hParent)
{
    CString strPath = GetFullPath(hParent);
	if(strPath.Right(1) != "\\")
		strPath += "\\";
	strPath += "*.*";

	WIN32_FIND_DATA tempFindFileName;

	HANDLE hFindFile = FindFirstFile(strPath,&tempFindFileName);
	BOOL bContinue = TRUE;
	while(hFindFile != INVALID_HANDLE_VALUE && bContinue)
	{	
		if(tempFindFileName.dwFileAttributes  == FILE_ATTRIBUTE_DIRECTORY)
		    m_tree.InsertItem(tempFindFileName.cFileName,hParent);
		bContinue = FindNextFile(hFindFile,&tempFindFileName);
	}
}

CString CUSBHostDlg::GetFullPath(HTREEITEM hCurrent)
{
    CString strTemp;
	CString strReturn = m_Dirname;
	if(m_Dirname != "")
	{
		strReturn = m_Dirname;
	}else
	{
		strReturn = "\\Hard Disk\\";
	}

	while(hCurrent != m_hRoot)
	{
		strTemp = m_tree.GetItemText(hCurrent);
		if(strTemp.Right(1) != "\\")
			strTemp += "\\";
		strReturn = strTemp  + strReturn;
		hCurrent = m_tree.GetParentItem(hCurrent);
	}
	return strReturn;
}