#include <stdlib.h>
#include <string.h>

#include "wine/winuser16.h"
#include "winerror.h"
#include "heap.h"
#include "resource.h"
#include "dlgs.h"
#include "win.h"
#include "sysmetrics.h"
#include "debug.h"
#include "winreg.h"
#include "authors.h"
#include "winnls.h"
#include "commctrl.h"
#include "spy.h"

#include "wine/obj_base.h"
#include "shell.h"
#include "pidl.h"
#include "shlobj.h"
#include "shell32_main.h"
#include "shlguid.h"

#define		IDD_TREEVIEW 99

static HWND32		hwndTreeView;
static LPBROWSEINFO32A  lpBrowseInfo;
static LPITEMIDLIST	pidlRet;

static void FillTreeView(LPSHELLFOLDER lpsf, LPITEMIDLIST  lpifq, HTREEITEM hParent);

static void InitializeTreeView(HWND32 hwndParent)
{
	HIMAGELIST	hImageList;
	LPSHELLFOLDER	lpsf;
	HRESULT	hr;

	hwndTreeView = GetDlgItem32 (hwndParent, IDD_TREEVIEW);
	Shell_GetImageList(NULL, &hImageList);
	
	TRACE(shell,"dlg=%x tree=%x\n", hwndParent, hwndTreeView );

	if (hImageList && hwndTreeView)
	{ TreeView_SetImageList(hwndTreeView, hImageList, 0);
	}

	hr=SHGetDesktopFolder(&lpsf);

	if (SUCCEEDED(hr) && hwndTreeView)
	{ TreeView_DeleteAllItems(hwndTreeView);
       	  FillTreeView(lpsf, NULL, TVI_ROOT);
	}
	
	if (SUCCEEDED(hr))
	{ lpsf->lpvtbl->fnRelease(lpsf);
	}
}

static int GetIcon(LPITEMIDLIST lpi, UINT32 uFlags)
{	SHFILEINFO32A    sfi;
	SHGetFileInfo32A((LPCSTR)lpi,0,&sfi, sizeof(SHFILEINFO32A), uFlags);
	return sfi.iIcon;
}

static void GetNormalAndSelectedIcons(LPITEMIDLIST lpifq,LPTVITEM32A lpTV_ITEM)
{	TRACE (shell,"%p %p\n",lpifq, lpTV_ITEM);

	lpTV_ITEM->iImage = GetIcon(lpifq, SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON);
	lpTV_ITEM->iSelectedImage = GetIcon(lpifq, SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_OPENICON);

	return;
}

typedef struct tagID
{
   LPSHELLFOLDER lpsfParent;
   LPITEMIDLIST  lpi;
   LPITEMIDLIST  lpifq;
} TV_ITEMDATA, *LPTV_ITEMDATA;

static BOOL32 GetName(LPSHELLFOLDER lpsf, LPITEMIDLIST lpi, DWORD dwFlags, LPSTR lpFriendlyName)
{
	BOOL32   bSuccess=TRUE;
	STRRET str;

	TRACE(shell,"%p %p %lx %p\n", lpsf, lpi, dwFlags, lpFriendlyName);
	if (SUCCEEDED(lpsf->lpvtbl->fnGetDisplayNameOf(lpsf, lpi, dwFlags, &str)))
	{ bSuccess = StrRetToStrN (lpFriendlyName, MAX_PATH, &str, lpi);
	}
	else
	  bSuccess = FALSE;

	TRACE(shell,"-- %s\n",lpFriendlyName);
	return bSuccess;
}

static void FillTreeView(LPSHELLFOLDER lpsf, LPITEMIDLIST  pidl, HTREEITEM hParent)
{
	TVITEM32A 			tvi;
	TVINSERTSTRUCT32A 	tvins;
	HTREEITEM       hPrev = 0;
	LPENUMIDLIST    lpe=0;
	LPITEMIDLIST	pidlTemp=0;
	LPTV_ITEMDATA	lptvid=0;
	ULONG		ulFetched;
	HRESULT		hr;
	char		szBuff[256];
	HWND32		hwnd=GetParent32(hwndTreeView);

	TRACE(shell, "%p %p %x\n",lpsf, pidl, (INT32)hParent);
	
	SetCapture32(GetParent32(hwndTreeView));
	SetCursor32(LoadCursor32A(0, IDC_WAIT32A));

	hr=lpsf->lpvtbl->fnEnumObjects(lpsf,hwnd, SHCONTF_FOLDERS | SHCONTF_NONFOLDERS,&lpe);

        if (SUCCEEDED(hr))
        { while (NOERROR == lpe->lpvtbl->fnNext(lpe,1,&pidlTemp,&ulFetched))
          { ULONG ulAttrs = SFGAO_HASSUBFOLDER | SFGAO_FOLDER;
            lpsf->lpvtbl->fnGetAttributesOf(lpsf, 1, &pidlTemp, &ulAttrs);
            if (ulAttrs & (SFGAO_HASSUBFOLDER | SFGAO_FOLDER))
            { if (ulAttrs & SFGAO_FOLDER)
              { tvi.mask  = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_PARAM;

	        if (ulAttrs & SFGAO_HASSUBFOLDER)
	        {  tvi.cChildren=1;
	           tvi.mask |= TVIF_CHILDREN;
	        }

	        if (! ( lptvid = (LPTV_ITEMDATA)SHAlloc(sizeof(TV_ITEMDATA)) ) )
	          goto Done;

	        if (!GetName(lpsf, pidlTemp, SHGDN_NORMAL, szBuff))
	          goto Done;

	        tvi.pszText    = szBuff;
	        tvi.cchTextMax = MAX_PATH;
	        tvi.lParam = (LPARAM)lptvid;

	        lpsf->lpvtbl->fnAddRef(lpsf);
	        lptvid->lpsfParent = lpsf;
	        lptvid->lpi	= ILClone(pidlTemp);
	        lptvid->lpifq	= ILCombine(pidl, pidlTemp);
	        GetNormalAndSelectedIcons(lptvid->lpifq, &tvi);

	        tvins.DUMMYUNIONNAME.item         = tvi;
	        tvins.hInsertAfter = hPrev;
	        tvins.hParent      = hParent;

	        hPrev = (HTREEITEM)TreeView_InsertItem32A (hwndTreeView, &tvins);

	      }
	    }
	    SHFree(pidlTemp);  //Finally, free the pidl that the shell gave us...
	    pidlTemp=0;
	  }
	}

Done:
	ReleaseCapture();
	SetCursor32(LoadCursor32A(0, IDC_ARROW32A));

	if (lpe)  lpe->lpvtbl->fnRelease(lpe);
	if (pidlTemp )           SHFree(pidlTemp);
}

static LRESULT MsgNotify(HWND32 hWnd,  UINT32 CtlID, LPNMHDR lpnmh)
{	
	NMTREEVIEW32A	*pnmtv   = (NMTREEVIEW32A *)lpnmh;
	LPTV_ITEMDATA	lptvid;  //Long pointer to TreeView item data
	LPSHELLFOLDER	lpsf2=0;
	

	TRACE(shell,"%x %x %p msg=%x\n", hWnd,  CtlID, lpnmh, pnmtv->hdr.code);

	switch (pnmtv->hdr.idFrom)
	{ case IDD_TREEVIEW:
	    switch (pnmtv->hdr.code)   
	    { case TVN_DELETEITEM:
	        { FIXME(shell,"TVN_DELETEITEM\n");
		  lptvid=(LPTV_ITEMDATA)pnmtv->itemOld.lParam;
	          lptvid->lpsfParent->lpvtbl->fnRelease(lptvid->lpsfParent);
	          SHFree(lptvid->lpi);  
	          SHFree(lptvid->lpifq);  
	          SHFree(lptvid);  
		}
	        break;
			
	      case TVN_ITEMEXPANDING:
		{ FIXME(shell,"TVN_ITEMEXPANDING\n");
		  if ((pnmtv->itemNew.state & TVIS_EXPANDEDONCE))
	            break;
		
	          lptvid=(LPTV_ITEMDATA)pnmtv->itemNew.lParam;
	          if (SUCCEEDED(lptvid->lpsfParent->lpvtbl->fnBindToObject(lptvid->lpsfParent, lptvid->lpi,0,(REFIID)&IID_IShellFolder,(LPVOID *)&lpsf2)))
	          { FillTreeView( lpsf2, lptvid->lpifq, pnmtv->itemNew.hItem );
	          }
	          TreeView_SortChildren(hwndTreeView, pnmtv->itemNew.hItem, FALSE);
		}
	        break;
	      case TVN_SELCHANGED:
	        lptvid=(LPTV_ITEMDATA)pnmtv->itemNew.lParam;
		pidlRet = lptvid->lpifq;
	        break;

	      default:
	        FIXME(shell,"unhandled\n");
		break;
	    }
	    break;

	  default:
	    break;
	}

	return 0;
}


/*************************************************************************
 *             BrsFolderDlgProc32  (not an exported API function)
 */
BOOL32 WINAPI BrsFolderDlgProc32( HWND32 hWnd, UINT32 msg, WPARAM32 wParam,
                               LPARAM lParam )
{    TRACE(shell,"hwnd=%i msg=%i 0x%08x 0x%08lx\n", hWnd,  msg, wParam, lParam );

	switch(msg)
	{ case WM_INITDIALOG:
	    pidlRet = NULL;
	    lpBrowseInfo = (LPBROWSEINFO32A) lParam;
	    if (lpBrowseInfo->lpfn)
	      FIXME(shell,"Callbacks not implemented\n");
	    if (lpBrowseInfo->ulFlags)
	      FIXME(shell,"flag %x not implemented\n", lpBrowseInfo->ulFlags);
	    if (lpBrowseInfo->lpszTitle)
	      FIXME(shell,"title %s not displayed\n", lpBrowseInfo->lpszTitle);
	    if ( lpBrowseInfo->pidlRoot )
	      FIXME(shell,"root is desktop\n");

	    InitializeTreeView ( hWnd);
	    return 1;

	  case WM_NOTIFY:
	    MsgNotify( hWnd, (UINT32)wParam, (LPNMHDR)lParam);
	    break;
	    
	  case WM_COMMAND:
	    switch (wParam)
	    { case IDOK:
		pdump ( pidlRet );
		_ILGetPidlPath (pidlRet, lpBrowseInfo->pszDisplayName, MAX_PATH);
	        EndDialog32(hWnd, (DWORD) ILClone(pidlRet));
	        return TRUE;

	      case IDCANCEL:
	        EndDialog32(hWnd, 0);
	        return TRUE;
	    }
	    break;
	}
	return 0;
}

extern LPCVOID _Resource_Dlg_SHBRSFORFOLDER_MSGBOX_0_data ;
/*************************************************************************
 * SHBrowseForFolderA [SHELL32.209]
 *
 */
LPITEMIDLIST WINAPI SHBrowseForFolder32A (LPBROWSEINFO32A lpbi)
{
	TRACE(shell, "(%lx,%s) empty stub!\n", (DWORD)lpbi, lpbi->lpszTitle);

	return (LPITEMIDLIST) DialogBoxIndirectParam32A( 0, 
			&_Resource_Dlg_SHBRSFORFOLDER_MSGBOX_0_data, 0, 
			BrsFolderDlgProc32, (INT32)lpbi );
}