/*
 * Winefile
 *
 * Copyright 2000 Martin Fuchs
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _WIN32
#include "config.h"
#include "wine/port.h"
#endif

#include "winefile.h"
#include "resource.h"


/* for read_directory_unix() */
#if !defined(_NO_EXTENSIONS) && !defined(_WIN32)
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#endif

#ifdef _NO_EXTENSIONS
#undef _LEFT_FILES
#endif

#ifndef _MAX_PATH
#define _MAX_DRIVE          3
#define _MAX_FNAME          256
#define _MAX_DIR            _MAX_FNAME
#define _MAX_EXT            _MAX_FNAME
#define _MAX_PATH           260
#endif

WINEFILE_GLOBALS Globals;

extern void WineLicense(HWND hWnd);
extern void WineWarranty(HWND hWnd);

typedef struct _Entry {
	struct _Entry*	next;
	struct _Entry*	down;
	struct _Entry*	up;

	BOOL	expanded;
	BOOL	scanned;
	int		level;

	WIN32_FIND_DATA	data;

#ifndef _NO_EXTENSIONS
	BY_HANDLE_FILE_INFORMATION bhfi;
	BOOL	bhfi_valid;
	BOOL	unix_dir;
#endif
} Entry;

typedef struct {
	Entry	entry;
	TCHAR	path[MAX_PATH];
	TCHAR	volname[_MAX_FNAME];
	TCHAR	fs[_MAX_DIR];
	DWORD	drive_type;
	DWORD	fs_flags;
} Root;

enum COLUMN_FLAGS {
	COL_SIZE		= 0x01,
	COL_DATE		= 0x02,
	COL_TIME		= 0x04,
	COL_ATTRIBUTES	= 0x08,
	COL_DOSNAMES	= 0x10,
#ifdef _NO_EXTENSIONS
	COL_ALL = COL_SIZE|COL_DATE|COL_TIME|COL_ATTRIBUTES|COL_DOSNAMES
#else
	COL_INDEX		= 0x20,
	COL_LINKS		= 0x40,
	COL_ALL = COL_SIZE|COL_DATE|COL_TIME|COL_ATTRIBUTES|COL_DOSNAMES|COL_INDEX|COL_LINKS
#endif
};

typedef enum {
	SORT_NAME,
	SORT_EXT,
	SORT_SIZE,
	SORT_DATE
} SORT_ORDER;

typedef struct {
	HWND	hwnd;
#ifndef _NO_EXTENSIONS
	HWND	hwndHeader;
#endif

#ifndef _NO_EXTENSIONS
#define	COLUMNS	10
#else
#define	COLUMNS	5
#endif
	int		widths[COLUMNS];
	int		positions[COLUMNS+1];

	BOOL	treePane;
	int		visible_cols;
	Entry*	root;
	Entry*	cur;
} Pane;

typedef struct {
	HWND	hwnd;
	Pane	left;
	Pane	right;
	int		focus_pane;		/* 0: left  1: right */
	WINDOWPLACEMENT pos;
	int		split_pos;
	BOOL	header_wdths_ok;

	TCHAR	path[MAX_PATH];
	Root	root;

	SORT_ORDER sortOrder;
} ChildWnd;


static void read_directory(Entry* parent, LPCTSTR path, int sortOrder);
static void set_curdir(ChildWnd* child, Entry* entry);

LRESULT CALLBACK FrameWndProc(HWND hwnd, UINT nmsg, WPARAM wparam, LPARAM lparam);
LRESULT CALLBACK ChildWndProc(HWND hwnd, UINT nmsg, WPARAM wparam, LPARAM lparam);
LRESULT CALLBACK TreeWndProc(HWND hwnd, UINT nmsg, WPARAM wparam, LPARAM lparam);


static void display_error(HWND hwnd, DWORD error)
{
	PTSTR msg;

	if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
		0, error, MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT), (PTSTR)&msg, 0, NULL))
		MessageBox(hwnd, msg, _T("Winefile"), MB_OK);
	else
		MessageBox(hwnd, _T("Error"), _T("Winefile"), MB_OK);

	LocalFree(msg);
}


static void read_directory_win(Entry* parent, LPCTSTR path)
{
	Entry* entry = (Entry*) malloc(sizeof(Entry));
	int level = parent->level + 1;
	Entry* last = 0;
	HANDLE hFind;
#ifndef _NO_EXTENSIONS
	HANDLE hFile;
#endif

	TCHAR buffer[MAX_PATH], *p;
	for(p=buffer; *path; )
		*p++ = *path++;

	lstrcpy(p, _T("\\*"));

	hFind = FindFirstFile(buffer, &entry->data);

	if (hFind != INVALID_HANDLE_VALUE) {
		parent->down = entry;

		do {
			entry->down = 0;
			entry->up = parent;
			entry->expanded = FALSE;
			entry->scanned = FALSE;
			entry->level = level;

#ifdef _NO_EXTENSIONS
			/* hide directory entry "." */
			if (entry->data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
				LPCTSTR name = entry->data.cFileName;

				if (name[0]=='.' && name[1]=='\0')
					continue;
			}
#else
			entry->unix_dir = FALSE;
			entry->bhfi_valid = FALSE;

			lstrcpy(p+1, entry->data.cFileName);

			hFile = CreateFile(buffer, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
								0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);

			if (hFile != INVALID_HANDLE_VALUE) {
				if (GetFileInformationByHandle(hFile, &entry->bhfi))
					entry->bhfi_valid = TRUE;

				CloseHandle(hFile);
			}
#endif

			last = entry;

			entry = (Entry*) malloc(sizeof(Entry));

			if (last)
				last->next = entry;
		} while(FindNextFile(hFind, &entry->data));

		last->next = 0;

		FindClose(hFind);
	} else
		parent->down = 0;

	free(entry);

	parent->scanned = TRUE;
}


static Entry* find_entry_win(Entry* parent, LPCTSTR name)
{
	Entry* entry;

	for(entry=parent->down; entry; entry=entry->next) {
		LPCTSTR p = name;
		LPCTSTR q = entry->data.cFileName;

		do {
			if (!*p || *p==_T('\\') || *p==_T('/'))
				return entry;
		} while(tolower(*p++) == tolower(*q++));

		p = name;
		q = entry->data.cAlternateFileName;

		do {
			if (!*p || *p==_T('\\') || *p==_T('/'))
				return entry;
		} while(tolower(*p++) == tolower(*q++));
	}

	return 0;
}


static Entry* read_tree_win(Root* root, LPCTSTR path, int sortOrder)
{
	TCHAR buffer[MAX_PATH];
	Entry* entry = &root->entry;
	LPCTSTR s = path;
	PTSTR d = buffer;

#ifndef _NO_EXTENSIONS
	entry->unix_dir = FALSE;
#endif

	while(entry) {
		while(*s && *s!=_T('\\') && *s!=_T('/'))
			*d++ = *s++;

		while(*s==_T('\\') || *s==_T('/'))
			s++;

		*d++ = _T('\\');
		*d = _T('\0');

		read_directory(entry, buffer, sortOrder);

		if (entry->down)
			entry->expanded = TRUE;

		if (!*s)
			break;

		entry = find_entry_win(entry, s);
	}

	return entry;
}


#if !defined(_NO_EXTENSIONS) && defined(__linux__)

BOOL to_filetime(const time_t* t, FILETIME* ftime)
{
	struct tm* tm = gmtime(t);
	SYSTEMTIME stime;

	if (!tm)
		return FALSE;

	stime.wYear = tm->tm_year+1900;
	stime.wMonth = tm->tm_mon+1;
	/*	stime.wDayOfWeek */
	stime.wDay = tm->tm_mday;
	stime.wHour = tm->tm_hour;
	stime.wMinute = tm->tm_min;
	stime.wSecond = tm->tm_sec;

	return SystemTimeToFileTime(&stime, ftime);
}

static void read_directory_unix(Entry* parent, LPCTSTR path)
{
	Entry* entry = (Entry*) malloc(sizeof(Entry));
	int level = parent->level + 1;
	Entry* last = 0;

	DIR* dir = opendir(path);

	if (dir) {
		struct stat st;
		struct dirent* ent;
		TCHAR buffer[MAX_PATH], *p;

		for(p=buffer; *path; )
			*p++ = *path++;

		if (p==buffer || p[-1]!='/')
			*p++ = '/';

		parent->down = entry;

		while((ent=readdir(dir))) {
			entry->unix_dir = TRUE;
			lstrcpy(entry->data.cFileName, ent->d_name);
			entry->data.dwFileAttributes = ent->d_name[0]=='.'? FILE_ATTRIBUTE_HIDDEN: 0;

			strcpy(p, ent->d_name);

			if (!stat(buffer, &st)) {
				if (S_ISDIR(st.st_mode))
					entry->data.dwFileAttributes |= FILE_ATTRIBUTE_DIRECTORY;

				entry->data.nFileSizeLow = st.st_size & 0xFFFFFFFF;
				entry->data.nFileSizeHigh = st.st_size >> 32;

				memset(&entry->data.ftCreationTime, 0, sizeof(FILETIME));
				to_filetime(&st.st_atime, &entry->data.ftLastAccessTime);
				to_filetime(&st.st_mtime, &entry->data.ftLastWriteTime);

				entry->bhfi.nFileIndexLow = ent->d_ino;
				entry->bhfi.nFileIndexHigh = 0;

				entry->bhfi.nNumberOfLinks = st.st_nlink;

				entry->bhfi_valid = TRUE;
			} else {
				entry->data.nFileSizeLow = 0;
				entry->data.nFileSizeHigh = 0;
				entry->bhfi_valid = FALSE;
			}

			entry->down = 0;
			entry->up = parent;
			entry->expanded = FALSE;
			entry->scanned = FALSE;
			entry->level = level;

			last = entry;

			entry = (Entry*) malloc(sizeof(Entry));

			if (last)
				last->next = entry;
		}

		last->next = 0;

		closedir(dir);
	} else
		parent->down = 0;

	free(entry);

	parent->scanned = TRUE;
}

static Entry* find_entry_unix(Entry* parent, LPCTSTR name)
{
	Entry* entry;

	for(entry=parent->down; entry; entry=entry->next) {
		LPCTSTR p = name;
		LPCTSTR q = entry->data.cFileName;

		do {
			if (!*p || *p==_T('/'))
				return entry;
		} while(*p++ == *q++);
	}

	return 0;
}

static Entry* read_tree_unix(Root* root, LPCTSTR path, int sortOrder)
{
	TCHAR buffer[MAX_PATH];
	Entry* entry = &root->entry;
	LPCTSTR s = path;
	PTSTR d = buffer;

	entry->unix_dir = TRUE;

	while(entry) {
		while(*s && *s!=_T('/'))
			*d++ = *s++;

		while(*s == _T('/'))
			s++;

		*d++ = _T('/');
		*d = _T('\0');

		read_directory(entry, buffer, sortOrder);

		if (entry->down)
			entry->expanded = TRUE;

		if (!*s)
			break;

		entry = find_entry_unix(entry, s);
	}

	return entry;
}

#endif


/* directories first... */
static int compareType(const WIN32_FIND_DATA* fd1, const WIN32_FIND_DATA* fd2)
{
	int dir1 = fd1->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
	int dir2 = fd2->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;

	return dir2==dir1? 0: dir2<dir1? -1: 1;
}


static int compareName(const void* arg1, const void* arg2)
{
	const WIN32_FIND_DATA* fd1 = &(*(Entry**)arg1)->data;
	const WIN32_FIND_DATA* fd2 = &(*(Entry**)arg2)->data;

	int cmp = compareType(fd1, fd2);
	if (cmp)
		return cmp;

	return lstrcmpi(fd1->cFileName, fd2->cFileName);
}

static int compareExt(const void* arg1, const void* arg2)
{
	const WIN32_FIND_DATA* fd1 = &(*(Entry**)arg1)->data;
	const WIN32_FIND_DATA* fd2 = &(*(Entry**)arg2)->data;
	const TCHAR *name1, *name2, *ext1, *ext2;

	int cmp = compareType(fd1, fd2);
	if (cmp)
		return cmp;

	name1 = fd1->cFileName;
	name2 = fd2->cFileName;

	ext1 = _tcsrchr(name1, _T('.'));
	ext2 = _tcsrchr(name2, _T('.'));

	if (ext1)
		ext1++;
	else
		ext1 = _T("");

	if (ext2)
		ext2++;
	else
		ext2 = _T("");

	cmp = lstrcmpi(ext1, ext2);
	if (cmp)
		return cmp;

	return lstrcmpi(name1, name2);
}

static int compareSize(const void* arg1, const void* arg2)
{
	WIN32_FIND_DATA* fd1 = &(*(Entry**)arg1)->data;
	WIN32_FIND_DATA* fd2 = &(*(Entry**)arg2)->data;

	int cmp = compareType(fd1, fd2);
	if (cmp)
		return cmp;

	cmp = fd2->nFileSizeHigh - fd1->nFileSizeHigh;

	if (cmp < 0)
		return -1;
	else if (cmp > 0)
		return 1;

	cmp = fd2->nFileSizeLow - fd1->nFileSizeLow;

	return cmp<0? -1: cmp>0? 1: 0;
}

static int compareDate(const void* arg1, const void* arg2)
{
	WIN32_FIND_DATA* fd1 = &(*(Entry**)arg1)->data;
	WIN32_FIND_DATA* fd2 = &(*(Entry**)arg2)->data;

	int cmp = compareType(fd1, fd2);
	if (cmp)
		return cmp;

	return CompareFileTime(&fd2->ftLastWriteTime, &fd1->ftLastWriteTime);
}


static int (*sortFunctions[])(const void* arg1, const void* arg2) = {
        compareName,	/* SORT_NAME */
	compareExt,		/* SORT_EXT */
	compareSize,	/* SORT_SIZE */
	compareDate		/* SORT_DATE */
};


static void SortDirectory(Entry* parent, SORT_ORDER sortOrder)
{
	Entry* entry = parent->down;
	Entry** array, **p;
	int len;

	len = 0;
	for(entry=parent->down; entry; entry=entry->next)
		len++;

	if (len) {
		array = (Entry**) alloca(len*sizeof(Entry*));

		p = array;
		for(entry=parent->down; entry; entry=entry->next)
			*p++ = entry;

		/* call qsort with the appropriate compare function */
		qsort(array, len, sizeof(array[0]), sortFunctions[sortOrder]);

		parent->down = array[0];

		for(p=array; --len; p++)
			p[0]->next = p[1];

		(*p)->next = 0;
	}
}


static void read_directory(Entry* parent, LPCTSTR path, int sortOrder)
{
	TCHAR buffer[MAX_PATH];
	Entry* entry;
	LPCTSTR s;
	PTSTR d;

#if !defined(_NO_EXTENSIONS) && defined(__linux__)
	if (parent->unix_dir)
	{
		read_directory_unix(parent, path);

		if (Globals.prescan_node) {
			s = path;
			d = buffer;

			while(*s)
				*d++ = *s++;

			*d++ = _T('/');

			for(entry=parent->down; entry; entry=entry->next)
				if (entry->data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
					lstrcpy(d, entry->data.cFileName);
					read_directory_unix(entry, buffer);
					SortDirectory(entry, sortOrder);
				}
		}
	}
	else
#endif
	{
		read_directory_win(parent, path);

		if (Globals.prescan_node) {
			s = path;
			d = buffer;

			while(*s)
				*d++ = *s++;

			*d++ = _T('\\');

			for(entry=parent->down; entry; entry=entry->next)
				if (entry->data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
					lstrcpy(d, entry->data.cFileName);
					read_directory_win(entry, buffer);
					SortDirectory(entry, sortOrder);
				}
		}
	}

	SortDirectory(parent, sortOrder);
}


static ChildWnd* alloc_child_window(LPCTSTR path)
{
	TCHAR drv[_MAX_DRIVE+1], dir[_MAX_DIR], name[_MAX_FNAME], ext[_MAX_EXT];
	ChildWnd* child = (ChildWnd*) malloc(sizeof(ChildWnd));
	Root* root = &child->root;
	Entry* entry;

	memset(child, 0, sizeof(ChildWnd));

	child->left.treePane = TRUE;
	child->left.visible_cols = 0;

	child->right.treePane = FALSE;
#ifndef _NO_EXTENSIONS
	child->right.visible_cols = COL_SIZE|COL_DATE|COL_TIME|COL_ATTRIBUTES|COL_INDEX|COL_LINKS;
#else
	child->right.visible_cols = COL_SIZE|COL_DATE|COL_TIME|COL_ATTRIBUTES;
#endif

	child->pos.length = sizeof(WINDOWPLACEMENT);
	child->pos.flags = 0;
	child->pos.showCmd = SW_SHOWNORMAL;
	child->pos.rcNormalPosition.left = CW_USEDEFAULT;
	child->pos.rcNormalPosition.top = CW_USEDEFAULT;
	child->pos.rcNormalPosition.right = CW_USEDEFAULT;
	child->pos.rcNormalPosition.bottom = CW_USEDEFAULT;

	child->focus_pane = 0;
	child->split_pos = 200;
	child->sortOrder = SORT_NAME;
	child->header_wdths_ok = FALSE;

	lstrcpy(child->path, path);

	_tsplitpath(path, drv, dir, name, ext);

#if !defined(_NO_EXTENSIONS) && defined(__linux__)
	if (*path == '/')
	{
		root->drive_type = GetDriveType(path);

		lstrcat(drv, _T("/"));
		lstrcpy(root->volname, _T("root fs"));
		root->fs_flags = 0;
		lstrcpy(root->fs, _T("unixfs"));

		lstrcpy(root->path, _T("/"));
		entry = read_tree_unix(root, path, child->sortOrder);
	}
	else
#endif
	{
		root->drive_type = GetDriveType(path);

		lstrcat(drv, _T("\\"));
		GetVolumeInformation(drv, root->volname, _MAX_FNAME, 0, 0, &root->fs_flags, root->fs, _MAX_DIR);

		lstrcpy(root->path, drv);
		entry = read_tree_win(root, path, child->sortOrder);
	}

	/*@@lstrcpy(root->entry.data.cFileName, drv); */
	wsprintf(root->entry.data.cFileName, _T("%s - %s"), drv, root->fs);

	root->entry.data.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY;

	child->left.root = &root->entry;

	set_curdir(child, entry);

	return child;
}


/* recursively free all child entries */
static void free_entries(Entry* parent)
{
	Entry *entry, *next=parent->down;

	if (next) {
		parent->down = 0;

		do {
			entry = next;
			next = entry->next;

			free_entries(entry);
			free(entry);
		} while(next);
	}
}

/* free all memory associated with a child window */
static void free_child_window(ChildWnd* child)
{
	free_entries(&child->root.entry);
	free(child);
}


/* get full path of specified directory entry */
static void get_path(Entry* dir, PTSTR path)
{
	Entry* entry;
	int len = 0;
	int level = 0;

	for(entry=dir; entry; level++) {
		LPCTSTR name = entry->data.cFileName;
		LPCTSTR s = name;
		int l;

		for(l=0; *s && *s!=_T('/') && *s!=_T('\\'); s++)
			l++;

		if (entry->up) {
			memmove(path+l+1, path, len*sizeof(TCHAR));
			memcpy(path+1, name, l*sizeof(TCHAR));
			len += l+1;

#ifndef _NO_EXTENSIONS
			if (entry->unix_dir)
				path[0] = _T('/');
			else
#endif
				path[0] = _T('\\');

			entry = entry->up;
		} else {
			memmove(path+l, path, len*sizeof(TCHAR));
			memcpy(path, name, l*sizeof(TCHAR));
			len += l;
			break;
		}
	}

	if (!level) {
#ifndef _NO_EXTENSIONS
		if (entry->unix_dir)
			path[len++] = _T('/');
		else
#endif
			path[len++] = _T('\\');
	}

	path[len] = _T('\0');
}


static void resize_frame_rect(HWND hwnd, PRECT prect)
{
	int new_top;
	RECT rt;

	if (IsWindowVisible(Globals.htoolbar)) {
		SendMessage(Globals.htoolbar, WM_SIZE, 0, 0);
		GetClientRect(Globals.htoolbar, &rt);
		prect->top = rt.bottom+3;
		prect->bottom -= rt.bottom+3;
	}

	if (IsWindowVisible(Globals.hdrivebar)) {
		SendMessage(Globals.hdrivebar, WM_SIZE, 0, 0);
		GetClientRect(Globals.hdrivebar, &rt);
		new_top = --prect->top + rt.bottom+3;
		MoveWindow(Globals.hdrivebar, 0, prect->top, rt.right, new_top, TRUE);
		prect->top = new_top;
		prect->bottom -= rt.bottom+2;
	}

	if (IsWindowVisible(Globals.hstatusbar)) {
		int parts[] = {300, 500};

		SendMessage(Globals.hstatusbar, WM_SIZE, 0, 0);
		SendMessage(Globals.hstatusbar, SB_SETPARTS, 2, (LPARAM)&parts);
		GetClientRect(Globals.hstatusbar, &rt);
		prect->bottom -= rt.bottom;
	}

	MoveWindow(Globals.hmdiclient, prect->left-1,prect->top-1,prect->right+2,prect->bottom+1, TRUE);
}

static void resize_frame(HWND hwnd, int cx, int cy)
{
	RECT rect;

	rect.left   = 0;
	rect.top    = 0;
	rect.right  = cx;
	rect.bottom = cy;

	resize_frame_rect(hwnd, &rect);
}

static void resize_frame_client(HWND hwnd)
{
	RECT rect;

	GetClientRect(hwnd, &rect);

	resize_frame_rect(hwnd, &rect);
}


static HHOOK hcbthook;
static ChildWnd* newchild = NULL;

LRESULT CALLBACK CBTProc(int code, WPARAM wparam, LPARAM lparam)
{
	if (code==HCBT_CREATEWND && newchild) {
		ChildWnd* child = newchild;
		newchild = NULL;

		child->hwnd = (HWND) wparam;
		SetWindowLong(child->hwnd, GWL_USERDATA, (LPARAM)child);
	}

	return CallNextHookEx(hcbthook, code, wparam, lparam);
}

static HWND create_child_window(ChildWnd* child)
{
	MDICREATESTRUCT mcs;
	int idx;

	mcs.szClass = WINEFILETREE;
	mcs.szTitle = (LPTSTR)child->path;
	mcs.hOwner  = Globals.hInstance;
	mcs.x       = child->pos.rcNormalPosition.left;
	mcs.y       = child->pos.rcNormalPosition.top;
	mcs.cx      = child->pos.rcNormalPosition.right-child->pos.rcNormalPosition.left;
	mcs.cy      = child->pos.rcNormalPosition.bottom-child->pos.rcNormalPosition.top;
	mcs.style   = 0;
	mcs.lParam  = 0;

	hcbthook = SetWindowsHookEx(WH_CBT, CBTProc, 0, GetCurrentThreadId());

	newchild = child;
	child->hwnd = (HWND) SendMessage(Globals.hmdiclient, WM_MDICREATE, 0, (LPARAM)&mcs);
	if (!child->hwnd)
		return 0;

	UnhookWindowsHookEx(hcbthook);

	idx = ListBox_FindItemData(child->left.hwnd, ListBox_GetCurSel(child->left.hwnd), child->left.cur);
	ListBox_SetCurSel(child->left.hwnd, idx);

	return child->hwnd;
}


struct ExecuteDialog {
	TCHAR	cmd[MAX_PATH];
	int		cmdshow;
};


static BOOL CALLBACK ExecuteDialogWndProg(HWND hwnd, UINT nmsg, WPARAM wparam, LPARAM lparam)
{
	static struct ExecuteDialog* dlg;

	switch(nmsg) {
		case WM_INITDIALOG:
			dlg = (struct ExecuteDialog*) lparam;
			return 1;

		case WM_COMMAND: {
			int id = (int)wparam;

			if (id == IDOK) {
				GetWindowText(GetDlgItem(hwnd, 201), dlg->cmd, MAX_PATH);
				dlg->cmdshow = Button_GetState(GetDlgItem(hwnd,214))&BST_CHECKED?
												SW_SHOWMINIMIZED: SW_SHOWNORMAL;
				EndDialog(hwnd, id);
			} else if (id == IDCANCEL)
				EndDialog(hwnd, id);

			return 1;}
	}

	return 0;
}


#ifndef _NO_EXTENSIONS

static struct FullScreenParameters {
	BOOL	mode;
	RECT	orgPos;
	BOOL	wasZoomed;
} g_fullscreen = {
        FALSE	/* mode */
};

void frame_get_clientspace(HWND hwnd, PRECT prect)
{
	RECT rt;

	if (!IsIconic(hwnd))
		GetClientRect(hwnd, prect);
	else {
		WINDOWPLACEMENT wp;

		GetWindowPlacement(hwnd, &wp);

		prect->left = prect->top = 0;
		prect->right = wp.rcNormalPosition.right-wp.rcNormalPosition.left-
						2*(GetSystemMetrics(SM_CXSIZEFRAME)+GetSystemMetrics(SM_CXEDGE));
		prect->bottom = wp.rcNormalPosition.bottom-wp.rcNormalPosition.top-
						2*(GetSystemMetrics(SM_CYSIZEFRAME)+GetSystemMetrics(SM_CYEDGE))-
						GetSystemMetrics(SM_CYCAPTION)-GetSystemMetrics(SM_CYMENUSIZE);
	}

	if (IsWindowVisible(Globals.htoolbar)) {
		GetClientRect(Globals.htoolbar, &rt);
		prect->top += rt.bottom+2;
	}

	if (IsWindowVisible(Globals.hdrivebar)) {
		GetClientRect(Globals.hdrivebar, &rt);
		prect->top += rt.bottom+2;
	}

	if (IsWindowVisible(Globals.hstatusbar)) {
		GetClientRect(Globals.hstatusbar, &rt);
		prect->bottom -= rt.bottom;
	}
}

static BOOL toggle_fullscreen(HWND hwnd)
{
	RECT rt;

	if ((g_fullscreen.mode=!g_fullscreen.mode)) {
		GetWindowRect(hwnd, &g_fullscreen.orgPos);
		g_fullscreen.wasZoomed = IsZoomed(hwnd);

		Frame_CalcFrameClient(hwnd, &rt);
		ClientToScreen(hwnd, (LPPOINT)&rt.left);
		ClientToScreen(hwnd, (LPPOINT)&rt.right);

		rt.left = g_fullscreen.orgPos.left-rt.left;
		rt.top = g_fullscreen.orgPos.top-rt.top;
		rt.right = GetSystemMetrics(SM_CXSCREEN)+g_fullscreen.orgPos.right-rt.right;
		rt.bottom = GetSystemMetrics(SM_CYSCREEN)+g_fullscreen.orgPos.bottom-rt.bottom;

		MoveWindow(hwnd, rt.left, rt.top, rt.right-rt.left, rt.bottom-rt.top, TRUE);
	} else {
		MoveWindow(hwnd, g_fullscreen.orgPos.left, g_fullscreen.orgPos.top,
							g_fullscreen.orgPos.right-g_fullscreen.orgPos.left,
							g_fullscreen.orgPos.bottom-g_fullscreen.orgPos.top, TRUE);

		if (g_fullscreen.wasZoomed)
			ShowWindow(hwnd, WS_MAXIMIZE);
	}

	return g_fullscreen.mode;
}

static void fullscreen_move(HWND hwnd)
{
	RECT rt, pos;
	GetWindowRect(hwnd, &pos);

	Frame_CalcFrameClient(hwnd, &rt);
	ClientToScreen(hwnd, (LPPOINT)&rt.left);
	ClientToScreen(hwnd, (LPPOINT)&rt.right);

	rt.left = pos.left-rt.left;
	rt.top = pos.top-rt.top;
	rt.right = GetSystemMetrics(SM_CXSCREEN)+pos.right-rt.right;
	rt.bottom = GetSystemMetrics(SM_CYSCREEN)+pos.bottom-rt.bottom;

	MoveWindow(hwnd, rt.left, rt.top, rt.right-rt.left, rt.bottom-rt.top, TRUE);
}

#endif


static void toggle_child(HWND hwnd, UINT cmd, HWND hchild)
{
	BOOL vis = IsWindowVisible(hchild);

	CheckMenuItem(Globals.hMenuOptions, cmd, vis?MF_BYCOMMAND:MF_BYCOMMAND|MF_CHECKED);

	ShowWindow(hchild, vis?SW_HIDE:SW_SHOW);

#ifndef _NO_EXTENSIONS
	if (g_fullscreen.mode)
		fullscreen_move(hwnd);
#endif

	resize_frame_client(hwnd);
}

BOOL activate_drive_window(LPCTSTR path)
{
	TCHAR drv1[_MAX_DRIVE], drv2[_MAX_DRIVE];
	HWND child_wnd;

	_tsplitpath(path, drv1, 0, 0, 0);

	/* search for a already open window for the same drive */
	for(child_wnd=GetNextWindow(Globals.hmdiclient,GW_CHILD); child_wnd; child_wnd=GetNextWindow(child_wnd, GW_HWNDNEXT)) {
		ChildWnd* child = (ChildWnd*) GetWindowLong(child_wnd, GWL_USERDATA);

		if (child) {
			_tsplitpath(child->root.path, drv2, 0, 0, 0);

			if (!lstrcmpi(drv2, drv1)) {
				SendMessage(Globals.hmdiclient, WM_MDIACTIVATE, (WPARAM)child_wnd, 0);

				if (IsMinimized(child_wnd))
					ShowWindow(child_wnd, SW_SHOWNORMAL);

				return TRUE;
			}
		}
	}

	return FALSE;
}

LRESULT CALLBACK FrameWndProc(HWND hwnd, UINT nmsg, WPARAM wparam, LPARAM lparam)
{
	switch(nmsg) {
		case WM_CLOSE:
			DestroyWindow(hwnd);
			break;

		case WM_DESTROY:
			PostQuitMessage(0);
			break;

		case WM_COMMAND: {
			UINT cmd = LOWORD(wparam);
			HWND hwndClient = (HWND) SendMessage(Globals.hmdiclient, WM_MDIGETACTIVE, 0, 0);

			if (SendMessage(hwndClient, WM_DISPATCH_COMMAND, wparam, lparam))
				break;

			if (cmd>=ID_DRIVE_FIRST && cmd<=ID_DRIVE_FIRST+0xFF) {
				TCHAR drv[_MAX_DRIVE], path[MAX_PATH];
				ChildWnd* child;
				LPCTSTR root = Globals.drives;
				int i;

				for(i=cmd-ID_DRIVE_FIRST; i--; root++)
					while(*root)
						root++;

				if (activate_drive_window(root))
					return 0;

				_tsplitpath(root, drv, 0, 0, 0);

				if (!SetCurrentDirectory(drv)) {
					display_error(hwnd, GetLastError());
					return 0;
				}

				GetCurrentDirectory(MAX_PATH, path); /*@@ letztes Verzeichnis pro Laufwerk speichern */
				child = alloc_child_window(path);

				if (!create_child_window(child))
					free(child);
			} else switch(cmd) {
				case ID_FILE_EXIT:
					PostQuitMessage(0);
					break;

				case ID_WINDOW_NEW: {
					TCHAR path[MAX_PATH];
					ChildWnd* child;

					GetCurrentDirectory(MAX_PATH, path);
					child = alloc_child_window(path);

					if (!create_child_window(child))
						free(child);
					break;}

				case ID_WINDOW_CASCADE:
					SendMessage(Globals.hmdiclient, WM_MDICASCADE, 0, 0);
					break;

				case ID_WINDOW_TILE_HORZ:
					SendMessage(Globals.hmdiclient, WM_MDITILE, MDITILE_HORIZONTAL, 0);
					break;

				case ID_WINDOW_TILE_VERT:
					SendMessage(Globals.hmdiclient, WM_MDITILE, MDITILE_VERTICAL, 0);
					break;

				case ID_WINDOW_ARRANGE:
					SendMessage(Globals.hmdiclient, WM_MDIICONARRANGE, 0, 0);
					break;

				case ID_VIEW_TOOL_BAR:
					toggle_child(hwnd, cmd, Globals.htoolbar);
					break;

				case ID_VIEW_DRIVE_BAR:
					toggle_child(hwnd, cmd, Globals.hdrivebar);
					break;

				case ID_VIEW_STATUSBAR:
					toggle_child(hwnd, cmd, Globals.hstatusbar);
					break;

				case ID_EXECUTE: {
					struct ExecuteDialog dlg = {{0}};
					if (DialogBoxParam(Globals.hInstance, MAKEINTRESOURCE(IDD_EXECUTE), hwnd, ExecuteDialogWndProg, (LPARAM)&dlg) == IDOK) {
						HINSTANCE hinst = ShellExecute(hwnd, NULL/*operation*/, dlg.cmd/*file*/, NULL/*parameters*/, NULL/*dir*/, dlg.cmdshow);

						if ((int)hinst <= 32)
							display_error(hwnd, GetLastError());
					}
					break;}

				case ID_HELP:
					WinHelp(hwnd, _T("winfile"), HELP_INDEX, 0);
					break;

#ifndef _NO_EXTENSIONS
				case ID_VIEW_FULLSCREEN:
					CheckMenuItem(Globals.hMenuOptions, cmd, toggle_fullscreen(hwnd)?MF_CHECKED:0);
					break;

#ifdef __linux__
				case ID_DRIVE_UNIX_FS: {
					TCHAR path[MAX_PATH];
					ChildWnd* child;

					if (activate_drive_window(_T("/")))
						break;

					getcwd(path, MAX_PATH);
					child = alloc_child_window(path);

					if (!create_child_window(child))
						free(child);
					break;}
#endif
#endif

				/*TODO: There are even more menu items! */

#ifndef _NO_EXTENSIONS
				case ID_LICENSE:
					WineLicense(Globals.hMainWnd);
					break;

				case ID_NO_WARRANTY:
					WineWarranty(Globals.hMainWnd);
					break;

				case ID_ABOUT_WINE:
					ShellAbout(hwnd, _T("WINE"), _T("Winefile"), 0);
					break;
#endif

				default:
					/*@@if (wParam >= PM_FIRST_LANGUAGE && wParam <= PM_LAST_LANGUAGE)
						STRING_SelectLanguageByNumber(wParam - PM_FIRST_LANGUAGE);
					else */if ((cmd<IDW_FIRST_CHILD || cmd>=IDW_FIRST_CHILD+0x100) &&
						(cmd<SC_SIZE || cmd>SC_RESTORE))
						MessageBox(hwnd, _T("Not yet implemented"), _T("Winefile"), MB_OK);

					return DefFrameProc(hwnd, Globals.hmdiclient, nmsg, wparam, lparam);
			}
			break;}

		case WM_SIZE:
			resize_frame(hwnd, LOWORD(lparam), HIWORD(lparam));
			break;	/* do not pass message to DefFrameProc */

#ifndef _NO_EXTENSIONS
		case WM_GETMINMAXINFO: {
			LPMINMAXINFO lpmmi = (LPMINMAXINFO)lparam;

			lpmmi->ptMaxTrackSize.x <<= 1;/*2*GetSystemMetrics(SM_CXSCREEN) / SM_CXVIRTUALSCREEN */
			lpmmi->ptMaxTrackSize.y <<= 1;/*2*GetSystemMetrics(SM_CYSCREEN) / SM_CYVIRTUALSCREEN */
			break;}

		case FRM_CALC_CLIENT:
			frame_get_clientspace(hwnd, (PRECT)lparam);
			return TRUE;
#endif

		default:
			return DefFrameProc(hwnd, Globals.hmdiclient, nmsg, wparam, lparam);
	}

	return 0;
}


const static LPTSTR g_pos_names[COLUMNS] = {
	_T(""),			/* symbol */
	_T("Name"),
	_T("Size"),
	_T("CDate"),
#ifndef _NO_EXTENSIONS
	_T("ADate"),
	_T("MDate"),
	_T("Index/Inode"),
	_T("Links"),
#endif
	_T("Attributes"),
#ifndef _NO_EXTENSIONS
	_T("Security")
#endif
};

const static int g_pos_align[] = {
	0,
	HDF_LEFT,	/* Name */
	HDF_RIGHT,	/* Size */
	HDF_LEFT,	/* CDate */
#ifndef _NO_EXTENSIONS
	HDF_LEFT,	/* ADate */
	HDF_LEFT,	/* MDate */
	HDF_LEFT,	/* Index */
	HDF_CENTER,	/* Links */
#endif
	HDF_CENTER,	/* Attributes */
#ifndef _NO_EXTENSIONS
	HDF_LEFT	/* Security */
#endif
};

static void resize_tree(ChildWnd* child, int cx, int cy)
{
	HDWP hdwp = BeginDeferWindowPos(4);
	RECT rt;

	rt.left   = 0;
	rt.top    = 0;
	rt.right  = cx;
	rt.bottom = cy;

	cx = child->split_pos + SPLIT_WIDTH/2;

#ifndef _NO_EXTENSIONS
	{
		WINDOWPOS wp;
		HD_LAYOUT hdl;

		hdl.prc   = &rt;
		hdl.pwpos = &wp;

		Header_Layout(child->left.hwndHeader, &hdl);

		DeferWindowPos(hdwp, child->left.hwndHeader, wp.hwndInsertAfter,
						wp.x-1, wp.y, child->split_pos-SPLIT_WIDTH/2+1, wp.cy, wp.flags);
		DeferWindowPos(hdwp, child->right.hwndHeader, wp.hwndInsertAfter,
						rt.left+cx+1, wp.y, wp.cx-cx+2, wp.cy, wp.flags);
	}
#endif

	DeferWindowPos(hdwp, child->left.hwnd, 0, rt.left, rt.top, child->split_pos-SPLIT_WIDTH/2-rt.left, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
	DeferWindowPos(hdwp, child->right.hwnd, 0, rt.left+cx+1, rt.top, rt.right-cx, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);

	EndDeferWindowPos(hdwp);
}


#ifndef _NO_EXTENSIONS

static HWND create_header(HWND parent, Pane* pane, int id)
{
	HD_ITEM hdi = {HDI_TEXT|HDI_WIDTH|HDI_FORMAT};
	int idx;

	HWND hwnd = CreateWindow(WC_HEADER, 0, WS_CHILD|WS_VISIBLE|HDS_HORZ/*TODO: |HDS_BUTTONS + sort orders*/,
								0, 0, 0, 0, parent, (HMENU)id, Globals.hInstance, 0);
	if (!hwnd)
		return 0;

	SendMessage(hwnd, WM_SETFONT, (WPARAM)GetStockObject(DEFAULT_GUI_FONT), FALSE);

	for(idx=0; idx<COLUMNS; idx++) {
		hdi.pszText = g_pos_names[idx];
		hdi.fmt = HDF_STRING | g_pos_align[idx];
		hdi.cxy = pane->widths[idx];
		Header_InsertItem(hwnd, idx, &hdi);
	}

	return hwnd;
}

#endif


static void init_output(HWND hwnd)
{
	TCHAR b[16];
	HFONT old_font;
	HDC hdc = GetDC(hwnd);

	if (GetNumberFormat(LOCALE_USER_DEFAULT, 0, _T("1000"), 0, b, 16) > 4)
		Globals.num_sep = b[1];
	else
		Globals.num_sep = _T('.');

	old_font = SelectFont(hdc, Globals.hfont);
	GetTextExtentPoint32(hdc, _T(" "), 1, &Globals.spaceSize);
	SelectFont(hdc, old_font);
	ReleaseDC(hwnd, hdc);
}

static void draw_item(Pane* pane, LPDRAWITEMSTRUCT dis, Entry* entry, int calcWidthCol);


/* calculate prefered width for all visible columns */

static BOOL calc_widths(Pane* pane, BOOL anyway)
{
	int col, x, cx, spc=3*Globals.spaceSize.cx;
	int entries = ListBox_GetCount(pane->hwnd);
	int orgWidths[COLUMNS];
	int orgPositions[COLUMNS+1];
	HFONT hfontOld;
	HDC hdc;
	int cnt;

	if (!anyway) {
		memcpy(orgWidths, pane->widths, sizeof(orgWidths));
		memcpy(orgPositions, pane->positions, sizeof(orgPositions));
	}

	for(col=0; col<COLUMNS; col++)
		pane->widths[col] = 0;

	hdc = GetDC(pane->hwnd);
	hfontOld = SelectFont(hdc, Globals.hfont);

	for(cnt=0; cnt<entries; cnt++) {
		Entry* entry = (Entry*) ListBox_GetItemData(pane->hwnd, cnt);

		DRAWITEMSTRUCT dis;

		dis.CtlType		  = 0;
		dis.CtlID		  = 0;
		dis.itemID		  = 0;
		dis.itemAction	  = 0;
		dis.itemState	  = 0;
		dis.hwndItem	  = pane->hwnd;
		dis.hDC			  = hdc;
		dis.rcItem.left	  = 0;
		dis.rcItem.top    = 0;
		dis.rcItem.right  = 0;
		dis.rcItem.bottom = 0;
		/*dis.itemData	  = 0; */

		draw_item(pane, &dis, entry, COLUMNS);
	}

	SelectObject(hdc, hfontOld);
	ReleaseDC(pane->hwnd, hdc);

	x = 0;
	for(col=0; col<COLUMNS; col++) {
		pane->positions[col] = x;
		cx = pane->widths[col];

		if (cx) {
			cx += spc;

			if (cx < IMAGE_WIDTH)
				cx = IMAGE_WIDTH;

			pane->widths[col] = cx;
		}

		x += cx;
	}

	pane->positions[COLUMNS] = x;

	ListBox_SetHorizontalExtent(pane->hwnd, x);

	/* no change? */
	if (!memcmp(orgWidths, pane->widths, sizeof(orgWidths)))
		return FALSE;

	/* don't move, if only collapsing an entry */
	if (!anyway && pane->widths[0]<orgWidths[0] &&
		!memcmp(orgWidths+1, pane->widths+1, sizeof(orgWidths)-sizeof(int))) {
		pane->widths[0] = orgWidths[0];
		memcpy(pane->positions, orgPositions, sizeof(orgPositions));

		return FALSE;
	}

	InvalidateRect(pane->hwnd, 0, TRUE);

	return TRUE;
}


/* calculate one prefered column width */

static void calc_single_width(Pane* pane, int col)
{
	HFONT hfontOld;
	int x, cx;
	int entries = ListBox_GetCount(pane->hwnd);
	int cnt;
	HDC hdc;

	pane->widths[col] = 0;

	hdc = GetDC(pane->hwnd);
	hfontOld = SelectFont(hdc, Globals.hfont);

	for(cnt=0; cnt<entries; cnt++) {
		Entry* entry = (Entry*) ListBox_GetItemData(pane->hwnd, cnt);
		DRAWITEMSTRUCT dis;

		dis.CtlType		  = 0;
		dis.CtlID		  = 0;
		dis.itemID		  = 0;
		dis.itemAction	  = 0;
		dis.itemState	  = 0;
		dis.hwndItem	  = pane->hwnd;
		dis.hDC			  = hdc;
		dis.rcItem.left	  = 0;
		dis.rcItem.top    = 0;
		dis.rcItem.right  = 0;
		dis.rcItem.bottom = 0;
		/*dis.itemData	  = 0; */

		draw_item(pane, &dis, entry, col);
	}

	SelectObject(hdc, hfontOld);
	ReleaseDC(pane->hwnd, hdc);

	cx = pane->widths[col];

	if (cx) {
		cx += 3*Globals.spaceSize.cx;

		if (cx < IMAGE_WIDTH)
			cx = IMAGE_WIDTH;
	}

	pane->widths[col] = cx;

	x = pane->positions[col] + cx;

	for(; col<COLUMNS; ) {
		pane->positions[++col] = x;
		x += pane->widths[col];
	}

	ListBox_SetHorizontalExtent(pane->hwnd, x);
}


/* insert listbox entries after index idx */

static void insert_entries(Pane* pane, Entry* parent, int idx)
{
	Entry* entry = parent;

	if (!entry)
		return;

	ShowWindow(pane->hwnd, SW_HIDE);

	for(; entry; entry=entry->next) {
#ifndef _LEFT_FILES
		if (pane->treePane && !(entry->data.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY))
			continue;
#endif

		/* don't display entries "." and ".." in the left pane */
		if (pane->treePane && (entry->data.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)
				&& entry->data.cFileName[0]==_T('.'))
			if (
#ifndef _NO_EXTENSIONS
				entry->data.cFileName[1]==_T('\0') ||
#endif
				(entry->data.cFileName[1]==_T('.') && entry->data.cFileName[2]==_T('\0')))
				continue;

		if (idx != -1)
			idx++;

		ListBox_InsertItemData(pane->hwnd, idx, entry);

		if (pane->treePane && entry->expanded)
			insert_entries(pane, entry->down, idx);
	}

	ShowWindow(pane->hwnd, SW_SHOW);
}


static WNDPROC g_orgTreeWndProc;

static void create_tree_window(HWND parent, Pane* pane, int id, int id_header)
{
	static int s_init = 0;
	Entry* entry = pane->root;

	pane->hwnd = CreateWindow(_T("ListBox"), _T(""), WS_CHILD|WS_VISIBLE|WS_HSCROLL|WS_VSCROLL|
								LBS_DISABLENOSCROLL|LBS_NOINTEGRALHEIGHT|LBS_OWNERDRAWFIXED|LBS_NOTIFY,
								0, 0, 0, 0, parent, (HMENU)id, Globals.hInstance, 0);

	SetWindowLong(pane->hwnd, GWL_USERDATA, (LPARAM)pane);
	g_orgTreeWndProc = SubclassWindow(pane->hwnd, TreeWndProc);

	SendMessage(pane->hwnd, WM_SETFONT, (WPARAM)Globals.hfont, FALSE);

	/* insert entries into listbox */
	if (entry)
		insert_entries(pane, entry, -1);

	/* calculate column widths */
	if (!s_init) {
		s_init = 1;
		init_output(pane->hwnd);
	}

	calc_widths(pane, TRUE);

#ifndef _NO_EXTENSIONS
	pane->hwndHeader = create_header(parent, pane, id_header);
#endif
}


static void InitChildWindow(ChildWnd* child)
{
	create_tree_window(child->hwnd, &child->left, IDW_TREE_LEFT, IDW_HEADER_LEFT);
	create_tree_window(child->hwnd, &child->right, IDW_TREE_RIGHT, IDW_HEADER_RIGHT);
}


static void format_date(const FILETIME* ft, TCHAR* buffer, int visible_cols)
{
	SYSTEMTIME systime;
	FILETIME lft;
	int len = 0;

	*buffer = _T('\0');

	if (!ft->dwLowDateTime && !ft->dwHighDateTime)
		return;

	if (!FileTimeToLocalFileTime(ft, &lft))
		{err: _tcscpy(buffer,_T("???")); return;}

	if (!FileTimeToSystemTime(&lft, &systime))
		goto err;

	if (visible_cols & COL_DATE) {
		len = GetDateFormat(LOCALE_USER_DEFAULT, 0, &systime, 0, buffer, BUFFER_LEN);
		if (!len)
			goto err;
	}

	if (visible_cols & COL_TIME) {
		if (len)
			buffer[len-1] = ' ';

		buffer[len++] = ' ';

		if (!GetTimeFormat(LOCALE_USER_DEFAULT, 0, &systime, 0, buffer+len, BUFFER_LEN-len))
			buffer[len] = _T('\0');
	}
}


static void calc_width(Pane* pane, LPDRAWITEMSTRUCT dis, int col, LPCTSTR str)
{
	RECT rt = {0};

	DrawText(dis->hDC, (LPTSTR)str, -1, &rt, DT_CALCRECT|DT_SINGLELINE|DT_NOPREFIX);

	if (rt.right > pane->widths[col])
		pane->widths[col] = rt.right;
}

static void calc_tabbed_width(Pane* pane, LPDRAWITEMSTRUCT dis, int col, LPCTSTR str)
{
	RECT rt = {0};

/*	DRAWTEXTPARAMS dtp = {sizeof(DRAWTEXTPARAMS), 2};
	DrawTextEx(dis->hDC, (LPTSTR)str, -1, &rt, DT_CALCRECT|DT_SINGLELINE|DT_NOPREFIX|DT_EXPANDTABS|DT_TABSTOP, &dtp);*/

	DrawText(dis->hDC, (LPTSTR)str, -1, &rt, DT_CALCRECT|DT_SINGLELINE|DT_EXPANDTABS|DT_TABSTOP|(2<<8));
	/*@@ rt (0,0) ??? */

	if (rt.right > pane->widths[col])
		pane->widths[col] = rt.right;
}


static void output_text(Pane* pane, LPDRAWITEMSTRUCT dis, int col, LPCTSTR str, DWORD flags)
{
	int x = dis->rcItem.left;
	RECT rt;

	rt.left   = x+pane->positions[col]+Globals.spaceSize.cx;
	rt.top    = dis->rcItem.top;
	rt.right  = x+pane->positions[col+1]-Globals.spaceSize.cx;
	rt.bottom = dis->rcItem.bottom;

	DrawText(dis->hDC, (LPTSTR)str, -1, &rt, DT_SINGLELINE|DT_NOPREFIX|flags);
}

static void output_tabbed_text(Pane* pane, LPDRAWITEMSTRUCT dis, int col, LPCTSTR str)
{
	int x = dis->rcItem.left;
	RECT rt;

	rt.left   = x+pane->positions[col]+Globals.spaceSize.cx;
	rt.top    = dis->rcItem.top;
	rt.right  = x+pane->positions[col+1]-Globals.spaceSize.cx;
	rt.bottom = dis->rcItem.bottom;

/*	DRAWTEXTPARAMS dtp = {sizeof(DRAWTEXTPARAMS), 2};
	DrawTextEx(dis->hDC, (LPTSTR)str, -1, &rt, DT_SINGLELINE|DT_NOPREFIX|DT_EXPANDTABS|DT_TABSTOP, &dtp);*/

	DrawText(dis->hDC, (LPTSTR)str, -1, &rt, DT_SINGLELINE|DT_EXPANDTABS|DT_TABSTOP|(2<<8));
}

static void output_number(Pane* pane, LPDRAWITEMSTRUCT dis, int col, LPCTSTR str)
{
	int x = dis->rcItem.left;
	RECT rt;
	LPCTSTR s = str;
	TCHAR b[128];
	LPTSTR d = b;
	int pos;

	rt.left   = x+pane->positions[col]+Globals.spaceSize.cx;
	rt.top    = dis->rcItem.top;
	rt.right  = x+pane->positions[col+1]-Globals.spaceSize.cx;
	rt.bottom = dis->rcItem.bottom;

	if (*s)
		*d++ = *s++;

	/* insert number separator characters */
	pos = lstrlen(s) % 3;

	while(*s)
		if (pos--)
			*d++ = *s++;
		else {
			*d++ = Globals.num_sep;
			pos = 3;
		}

	DrawText(dis->hDC, b, d-b, &rt, DT_RIGHT|DT_SINGLELINE|DT_NOPREFIX|DT_END_ELLIPSIS);
}


static int is_exe_file(LPCTSTR ext)
{
	const static LPCTSTR executable_extensions[] = {
		_T("COM"),
		_T("EXE"),
		_T("BAT"),
		_T("CMD"),
#ifndef _NO_EXTENSIONS
		_T("CMM"),
		_T("BTM"),
		_T("AWK"),
#endif
		0
	};

	TCHAR ext_buffer[_MAX_EXT];
	const LPCTSTR* p;
	LPCTSTR s;
	LPTSTR d;

	for(s=ext+1,d=ext_buffer; (*d=tolower(*s)); s++)
		d++;

	for(p=executable_extensions; *p; p++)
		if (!_tcscmp(ext_buffer, *p))
			return 1;

	return 0;
}

static int is_registered_type(LPCTSTR ext)
{
        /* TODO */

	return 1;
}


static void draw_item(Pane* pane, LPDRAWITEMSTRUCT dis, Entry* entry, int calcWidthCol)
{
	TCHAR buffer[BUFFER_LEN];
	DWORD attrs;
	int visible_cols = pane->visible_cols;
	COLORREF bkcolor, textcolor;
	RECT focusRect = dis->rcItem;
	HBRUSH hbrush;
	enum IMAGE img;
	int img_pos, cx;
	int col = 0;

	if (entry) {
		attrs = entry->data.dwFileAttributes;

		if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
			if (entry->data.cFileName[0]==_T('.') && entry->data.cFileName[1]==_T('.')
					&& entry->data.cFileName[2]==_T('\0'))
				img = IMG_FOLDER_UP;
#ifndef _NO_EXTENSIONS
			else if (entry->data.cFileName[0]==_T('.') && entry->data.cFileName[1]==_T('\0'))
				img = IMG_FOLDER_CUR;
#endif
			else if (
#ifdef _NO_EXTENSIONS
					 entry->expanded ||
#endif
					 (pane->treePane && (dis->itemState&ODS_FOCUS)))
				img = IMG_OPEN_FOLDER;
			else
				img = IMG_FOLDER;
		} else {
			LPCTSTR ext = _tcsrchr(entry->data.cFileName, '.');
			if (!ext)
				ext = _T("");

			if (is_exe_file(ext))
				img = IMG_EXECUTABLE;
			else if (is_registered_type(ext))
				img = IMG_DOCUMENT;
			else
				img = IMG_FILE;
		}
	} else {
		attrs = 0;
		img = IMG_NONE;
	}

	if (pane->treePane) {
		if (entry) {
			img_pos = dis->rcItem.left + entry->level*(IMAGE_WIDTH+Globals.spaceSize.cx);

			if (calcWidthCol == -1) {
				int x;
				int y = dis->rcItem.top + IMAGE_HEIGHT/2;
				Entry* up;
				RECT rt_clip;
				HRGN hrgn_org = CreateRectRgn(0, 0, 0, 0);
				HRGN hrgn;

				rt_clip.left   = dis->rcItem.left;
				rt_clip.top    = dis->rcItem.top;
				rt_clip.right  = dis->rcItem.left+pane->widths[col];
				rt_clip.bottom = dis->rcItem.bottom;

				hrgn = CreateRectRgnIndirect(&rt_clip);

				if (!GetClipRgn(dis->hDC, hrgn_org)) {
					DeleteObject(hrgn_org);
					hrgn_org = 0;
				}

				/*				HGDIOBJ holdPen = SelectObject(dis->hDC, GetStockObject(BLACK_PEN)); */
				ExtSelectClipRgn(dis->hDC, hrgn, RGN_AND);
				DeleteObject(hrgn);

				if ((up=entry->up) != NULL) {
					MoveToEx(dis->hDC, img_pos-IMAGE_WIDTH/2, y, 0);
					LineTo(dis->hDC, img_pos-2, y);

					x = img_pos - IMAGE_WIDTH/2;

					do {
						x -= IMAGE_WIDTH+Globals.spaceSize.cx;

						if (up->next
#ifndef _LEFT_FILES
							&& (up->next->data.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)
#endif
							) {
							MoveToEx(dis->hDC, x, dis->rcItem.top, 0);
							LineTo(dis->hDC, x, dis->rcItem.bottom);
						}
					} while((up=up->up) != NULL);
				}

				x = img_pos - IMAGE_WIDTH/2;

				MoveToEx(dis->hDC, x, dis->rcItem.top, 0);
				LineTo(dis->hDC, x, y);

				if (entry->next
#ifndef _LEFT_FILES
					&& (entry->next->data.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)
#endif
					)
					LineTo(dis->hDC, x, dis->rcItem.bottom);

				if (entry->down && entry->expanded) {
					x += IMAGE_WIDTH+Globals.spaceSize.cx;
					MoveToEx(dis->hDC, x, dis->rcItem.top+IMAGE_HEIGHT, 0);
					LineTo(dis->hDC, x, dis->rcItem.bottom);
				}

				SelectClipRgn(dis->hDC, hrgn_org);
				if (hrgn_org) DeleteObject(hrgn_org);
				/*				SelectObject(dis->hDC, holdPen); */
			} else if (calcWidthCol==col || calcWidthCol==COLUMNS) {
				int right = img_pos + IMAGE_WIDTH - Globals.spaceSize.cx;

				if (right > pane->widths[col])
					pane->widths[col] = right;
			}
		} else  {
			img_pos = dis->rcItem.left;
		}
	} else {
		img_pos = dis->rcItem.left;

		if (calcWidthCol==col || calcWidthCol==COLUMNS)
			pane->widths[col] = IMAGE_WIDTH;
	}

	if (calcWidthCol == -1) {
		focusRect.left = img_pos -2;

#ifdef _NO_EXTENSIONS
		if (pane->treePane && entry) {
			RECT rt = {0};

			DrawText(dis->hDC, entry->data.cFileName, -1, &rt, DT_CALCRECT|DT_SINGLELINE|DT_NOPREFIX);

			focusRect.right = dis->rcItem.left+pane->positions[col+1]+Globals.spaceSize.cx + rt.right +2;
		}
#else

		if (attrs & FILE_ATTRIBUTE_COMPRESSED)
			textcolor = COLOR_COMPRESSED;
		else
#endif
			textcolor = RGB(0,0,0);

		if (dis->itemState & ODS_FOCUS) {
			textcolor = RGB(255,255,255);
			bkcolor = COLOR_SELECTION;
		} else {
			bkcolor = RGB(255,255,255);
		}

		hbrush = CreateSolidBrush(bkcolor);
		FillRect(dis->hDC, &focusRect, hbrush);
		DeleteObject(hbrush);

		SetBkMode(dis->hDC, TRANSPARENT);
		SetTextColor(dis->hDC, textcolor);

		cx = pane->widths[col];

		if (cx && img!=IMG_NONE) {
			if (cx > IMAGE_WIDTH)
				cx = IMAGE_WIDTH;

			ImageList_DrawEx(Globals.himl, img, dis->hDC,
								img_pos, dis->rcItem.top, cx,
								IMAGE_HEIGHT, bkcolor, CLR_DEFAULT, ILD_NORMAL);
		}
	}

	if (!entry)
		return;

#ifdef _NO_EXTENSIONS
	if (img >= IMG_FOLDER_UP)
		return;
#endif

	col++;

	/* ouput file name */
	if (calcWidthCol == -1)
		output_text(pane, dis, col, entry->data.cFileName, 0);
	else if (calcWidthCol==col || calcWidthCol==COLUMNS)
		calc_width(pane, dis, col, entry->data.cFileName);

	col++;

#ifdef _NO_EXTENSIONS
  if (!pane->treePane) {
#endif

        /* display file size */
	if (visible_cols & COL_SIZE) {
#ifdef _NO_EXTENSIONS
		if (!(attrs&FILE_ATTRIBUTE_DIRECTORY))
#endif
		{
			ULONGLONG size;

                        size = ((ULONGLONG)entry->data.nFileSizeHigh << 32) | entry->data.nFileSizeLow;

			_stprintf(buffer, _T("%") LONGLONGARG _T("d"), size);

			if (calcWidthCol == -1)
				output_number(pane, dis, col, buffer);
			else if (calcWidthCol==col || calcWidthCol==COLUMNS)
				calc_width(pane, dis, col, buffer);/*TODO: not ever time enough */
		}

		col++;
	}

	/* display file date */
	if (visible_cols & (COL_DATE|COL_TIME)) {
#ifndef _NO_EXTENSIONS
		format_date(&entry->data.ftCreationTime, buffer, visible_cols);
		if (calcWidthCol == -1)
			output_text(pane, dis, col, buffer, 0);
		else if (calcWidthCol==col || calcWidthCol==COLUMNS)
			calc_width(pane, dis, col, buffer);
		col++;

		format_date(&entry->data.ftLastAccessTime, buffer, visible_cols);
		if (calcWidthCol == -1)
			output_text(pane, dis, col, buffer, 0);
		else if (calcWidthCol==col || calcWidthCol==COLUMNS)
			calc_width(pane, dis, col, buffer);
		col++;
#endif

		format_date(&entry->data.ftLastWriteTime, buffer, visible_cols);
		if (calcWidthCol == -1)
			output_text(pane, dis, col, buffer, 0);
		else if (calcWidthCol==col || calcWidthCol==COLUMNS)
			calc_width(pane, dis, col, buffer);
		col++;
	}

#ifndef _NO_EXTENSIONS
	if (entry->bhfi_valid) {
            ULONGLONG index = ((ULONGLONG)entry->bhfi.nFileIndexHigh << 32) | entry->bhfi.nFileIndexLow;

		if (visible_cols & COL_INDEX) {
			_stprintf(buffer, _T("%") LONGLONGARG _T("X"), index);
			if (calcWidthCol == -1)
				output_text(pane, dis, col, buffer, DT_RIGHT);
			else if (calcWidthCol==col || calcWidthCol==COLUMNS)
				calc_width(pane, dis, col, buffer);
			col++;
		}

		if (visible_cols & COL_LINKS) {
			wsprintf(buffer, _T("%d"), entry->bhfi.nNumberOfLinks);
			if (calcWidthCol == -1)
				output_text(pane, dis, col, buffer, DT_CENTER);
			else if (calcWidthCol==col || calcWidthCol==COLUMNS)
				calc_width(pane, dis, col, buffer);
			col++;
		}
	} else
		col += 2;
#endif

	/* show file attributes */
	if (visible_cols & COL_ATTRIBUTES) {
#ifdef _NO_EXTENSIONS
		_tcscpy(buffer, _T(" \t \t \t \t "));
#else
		_tcscpy(buffer, _T(" \t \t \t \t \t \t \t \t \t \t \t "));
#endif

		if (attrs & FILE_ATTRIBUTE_NORMAL)					buffer[ 0] = 'N';
		else {
			if (attrs & FILE_ATTRIBUTE_READONLY)			buffer[ 2] = 'R';
			if (attrs & FILE_ATTRIBUTE_HIDDEN)				buffer[ 4] = 'H';
			if (attrs & FILE_ATTRIBUTE_SYSTEM)				buffer[ 6] = 'S';
			if (attrs & FILE_ATTRIBUTE_ARCHIVE)				buffer[ 8] = 'A';
			if (attrs & FILE_ATTRIBUTE_COMPRESSED)			buffer[10] = 'C';
#ifndef _NO_EXTENSIONS
			if (attrs & FILE_ATTRIBUTE_DIRECTORY)			buffer[12] = 'D';
			if (attrs & FILE_ATTRIBUTE_ENCRYPTED)			buffer[14] = 'E';
			if (attrs & FILE_ATTRIBUTE_TEMPORARY)			buffer[16] = 'T';
			if (attrs & FILE_ATTRIBUTE_SPARSE_FILE)			buffer[18] = 'P';
			if (attrs & FILE_ATTRIBUTE_REPARSE_POINT)		buffer[20] = 'Q';
			if (attrs & FILE_ATTRIBUTE_OFFLINE)				buffer[22] = 'O';
			if (attrs & FILE_ATTRIBUTE_NOT_CONTENT_INDEXED)	buffer[24] = 'X';
#endif
		}

		if (calcWidthCol == -1)
			output_tabbed_text(pane, dis, col, buffer);
		else if (calcWidthCol==col || calcWidthCol==COLUMNS)
			calc_tabbed_width(pane, dis, col, buffer);

		col++;
	}

/*TODO
	if (flags.security) {
		DWORD rights = get_access_mask();

		tcscpy(buffer, _T(" \t \t \t  \t  \t \t \t  \t  \t \t \t "));

		if (rights & FILE_READ_DATA)			buffer[ 0] = 'R';
		if (rights & FILE_WRITE_DATA)			buffer[ 2] = 'W';
		if (rights & FILE_APPEND_DATA)			buffer[ 4] = 'A';
		if (rights & FILE_READ_EA)				{buffer[6] = 'entry'; buffer[ 7] = 'R';}
		if (rights & FILE_WRITE_EA)				{buffer[9] = 'entry'; buffer[10] = 'W';}
		if (rights & FILE_EXECUTE)				buffer[12] = 'X';
		if (rights & FILE_DELETE_CHILD)			buffer[14] = 'D';
		if (rights & FILE_READ_ATTRIBUTES)		{buffer[16] = 'a'; buffer[17] = 'R';}
		if (rights & FILE_WRITE_ATTRIBUTES)		{buffer[19] = 'a'; buffer[20] = 'W';}
		if (rights & WRITE_DAC)					buffer[22] = 'C';
		if (rights & WRITE_OWNER)				buffer[24] = 'O';
		if (rights & SYNCHRONIZE)				buffer[26] = 'S';

		output_text(dis, col++, buffer, DT_LEFT, 3, psize);
	}

	if (flags.description) {
		get_description(buffer);
		output_text(dis, col++, buffer, 0, psize);
	}
*/

#ifdef _NO_EXTENSIONS
  }

        /* draw focus frame */
	if ((dis->itemState&ODS_FOCUS) && calcWidthCol==-1) {
	        /* Currently [04/2000] Wine neither behaves exactly the same */
	        /* way as WIN 95 nor like Windows NT... */
		HGDIOBJ lastBrush;
		HPEN lastPen;
		HPEN hpen;

		if (!(GetVersion() & 0x80000000)) {	/* Windows NT? */
			LOGBRUSH lb = {PS_SOLID, RGB(255,255,255)};
			hpen = ExtCreatePen(PS_COSMETIC|PS_ALTERNATE, 1, &lb, 0, 0);
		} else
			hpen = CreatePen(PS_DOT, 0, RGB(255,255,255));

		lastPen = SelectPen(dis->hDC, hpen);
		lastBrush = SelectObject(dis->hDC, GetStockObject(HOLLOW_BRUSH));
		SetROP2(dis->hDC, R2_XORPEN);
		Rectangle(dis->hDC, focusRect.left, focusRect.top, focusRect.right, focusRect.bottom);
		SelectObject(dis->hDC, lastBrush);
		SelectObject(dis->hDC, lastPen);
		DeleteObject(hpen);
	}
#endif
}


#ifdef _NO_EXTENSIONS

static void draw_splitbar(HWND hwnd, int x)
{
	RECT rt;
	HDC hdc = GetDC(hwnd);

	GetClientRect(hwnd, &rt);

	rt.left = x - SPLIT_WIDTH/2;
	rt.right = x + SPLIT_WIDTH/2+1;

	InvertRect(hdc, &rt);

	ReleaseDC(hwnd, hdc);
}

#endif


#ifndef _NO_EXTENSIONS

static void set_header(Pane* pane)
{
	HD_ITEM item;
	int scroll_pos = GetScrollPos(pane->hwnd, SB_HORZ);
	int i=0, x=0;

	item.mask = HDI_WIDTH;
	item.cxy = 0;

	for(; x+pane->widths[i]<scroll_pos && i<COLUMNS; i++) {
		x += pane->widths[i];
		Header_SetItem(pane->hwndHeader, i, &item);
	}

	if (i < COLUMNS) {
		x += pane->widths[i];
		item.cxy = x - scroll_pos;
		Header_SetItem(pane->hwndHeader, i++, &item);

		for(; i<COLUMNS; i++) {
			item.cxy = pane->widths[i];
			x += pane->widths[i];
			Header_SetItem(pane->hwndHeader, i, &item);
		}
	}
}

static LRESULT pane_notify(Pane* pane, NMHDR* pnmh)
{
	switch(pnmh->code) {
		case HDN_TRACK:
		case HDN_ENDTRACK: {
			HD_NOTIFY* phdn = (HD_NOTIFY*) pnmh;
			int idx = phdn->iItem;
			int dx = phdn->pitem->cxy - pane->widths[idx];
			int i;

			RECT clnt;
			GetClientRect(pane->hwnd, &clnt);

			/* move immediate to simulate HDS_FULLDRAG (for now [04/2000] not realy needed with WINELIB) */
			Header_SetItem(pane->hwndHeader, idx, phdn->pitem);

			pane->widths[idx] += dx;

			for(i=idx; ++i<=COLUMNS; )
				pane->positions[i] += dx;

			{
				int scroll_pos = GetScrollPos(pane->hwnd, SB_HORZ);
				RECT rt_scr;
				RECT rt_clip;

				rt_scr.left   = pane->positions[idx+1]-scroll_pos;
				rt_scr.top    = 0;
				rt_scr.right  = clnt.right;
				rt_scr.bottom = clnt.bottom;

				rt_clip.left   = pane->positions[idx]-scroll_pos;
				rt_clip.top    = 0;
				rt_clip.right  = clnt.right;
				rt_clip.bottom = clnt.bottom;

				if (rt_scr.left < 0) rt_scr.left = 0;
				if (rt_clip.left < 0) rt_clip.left = 0;

				ScrollWindowEx(pane->hwnd, dx, 0, &rt_scr, &rt_clip, 0, 0, SW_INVALIDATE);

				rt_clip.right = pane->positions[idx+1];
				RedrawWindow(pane->hwnd, &rt_clip, 0, RDW_INVALIDATE|RDW_UPDATENOW);

				if (pnmh->code == HDN_ENDTRACK) {
					ListBox_SetHorizontalExtent(pane->hwnd, pane->positions[COLUMNS]);

					if (GetScrollPos(pane->hwnd, SB_HORZ) != scroll_pos)
						set_header(pane);
				}
			}

			return FALSE;
		}

		case HDN_DIVIDERDBLCLICK: {
			HD_NOTIFY* phdn = (HD_NOTIFY*) pnmh;
			HD_ITEM item;

			calc_single_width(pane, phdn->iItem);
			item.mask = HDI_WIDTH;
			item.cxy = pane->widths[phdn->iItem];

			Header_SetItem(pane->hwndHeader, phdn->iItem, &item);
			InvalidateRect(pane->hwnd, 0, TRUE);
			break;}
	}

	return 0;
}

#endif


static void scan_entry(ChildWnd* child, Entry* entry)
{
	TCHAR path[MAX_PATH];
	int idx = ListBox_GetCurSel(child->left.hwnd);
	HCURSOR crsrOld = SetCursor(LoadCursor(0, IDC_WAIT));

	/* delete sub entries in left pane */
	for(;;) {
		LRESULT res = ListBox_GetItemData(child->left.hwnd, idx+1);
		Entry* sub = (Entry*) res;

		if (res==LB_ERR || !sub || sub->level<=entry->level)
			break;

		ListBox_DeleteString(child->left.hwnd, idx+1);
	}

	/* empty right pane */
	ListBox_ResetContent(child->right.hwnd);

	/* release memory */
	free_entries(entry);

	/* read contents from disk */
	get_path(entry, path);
	read_directory(entry, path, child->sortOrder);

	/* insert found entries in right pane */
	insert_entries(&child->right, entry->down, -1);
	calc_widths(&child->right, FALSE);
#ifndef _NO_EXTENSIONS
	set_header(&child->right);
#endif

	child->header_wdths_ok = FALSE;

	SetCursor(crsrOld);
}


/* expand a directory entry */

static BOOL expand_entry(ChildWnd* child, Entry* dir)
{
	int idx;
	Entry* p;

	if (!dir || dir->expanded || !dir->down)
		return FALSE;

	p = dir->down;

	if (p->data.cFileName[0]=='.' && p->data.cFileName[1]=='\0' && p->next) {
		p = p->next;

		if (p->data.cFileName[0]=='.' && p->data.cFileName[1]=='.' &&
				p->data.cFileName[2]=='\0' && p->next)
			p = p->next;
	}

	/* no subdirectories ? */
	if (!(p->data.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY))
		return FALSE;

	idx = ListBox_FindItemData(child->left.hwnd, 0, dir);

	dir->expanded = TRUE;

	/* insert entries in left pane */
	insert_entries(&child->left, p, idx);

	if (!child->header_wdths_ok) {
		if (calc_widths(&child->left, FALSE)) {
#ifndef _NO_EXTENSIONS
			set_header(&child->left);
#endif

			child->header_wdths_ok = TRUE;
		}
	}

	return TRUE;
}


static void collapse_entry(Pane* pane, Entry* dir)
{
	int idx = ListBox_FindItemData(pane->hwnd, 0, dir);

	ShowWindow(pane->hwnd, SW_HIDE);

	/* hide sub entries */
	for(;;) {
		LRESULT res = ListBox_GetItemData(pane->hwnd, idx+1);
		Entry* sub = (Entry*) res;

		if (res==LB_ERR || !sub || sub->level<=dir->level)
			break;

		ListBox_DeleteString(pane->hwnd, idx+1);
	}

	dir->expanded = FALSE;

	ShowWindow(pane->hwnd, SW_SHOW);
}


static void set_curdir(ChildWnd* child, Entry* entry)
{
	TCHAR path[MAX_PATH];

	child->left.cur = entry;
	child->right.root = entry->down;
	child->right.cur = entry;

	if (!entry->scanned)
		scan_entry(child, entry);
	else {
		ListBox_ResetContent(child->right.hwnd);
		insert_entries(&child->right, entry->down, -1);
		calc_widths(&child->right, FALSE);
#ifndef _NO_EXTENSIONS
		set_header(&child->right);
#endif
	}

	get_path(entry, path);
	lstrcpy(child->path, path);

	if (child->hwnd)	/* only change window title, if the window already exists */
		SetWindowText(child->hwnd, path);

	SetCurrentDirectory(path);
}


static void activate_entry(ChildWnd* child, Pane* pane)
{
	Entry* entry = pane->cur;

	if (!entry)
		return;

	if (entry->data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
		int scanned_old = entry->scanned;

		if (!scanned_old)
			scan_entry(child, entry);

#ifndef _NO_EXTENSIONS
		if (entry->data.cFileName[0]=='.' && entry->data.cFileName[1]=='\0')
			return;
#endif

		if (entry->data.cFileName[0]=='.' && entry->data.cFileName[1]=='.' && entry->data.cFileName[2]=='\0') {
			entry = child->left.cur->up;
			collapse_entry(&child->left, entry);
			goto focus_entry;
		} else if (entry->expanded)
			collapse_entry(pane, child->left.cur);
		else {
			expand_entry(child, child->left.cur);

			if (!pane->treePane) focus_entry: {
				int idx = ListBox_FindItemData(child->left.hwnd, ListBox_GetCurSel(child->left.hwnd), entry);
				ListBox_SetCurSel(child->left.hwnd, idx);
				set_curdir(child, entry);
			}
		}

		if (!scanned_old) {
			calc_widths(pane, FALSE);

#ifndef _NO_EXTENSIONS
			set_header(pane);
#endif
		}
	} else {
		TCHAR cmd[MAX_PATH];
		HINSTANCE hinst;

		get_path(entry, cmd);

		 /* start program, open document... */
		hinst = ShellExecute(child->hwnd, NULL/*operation*/, cmd, NULL/*parameters*/, NULL/*dir*/, SW_SHOWNORMAL);

		if ((int)hinst <= 32)
			display_error(child->hwnd, GetLastError());
	}
}


static BOOL pane_command(Pane* pane, UINT cmd)
{
	switch(cmd) {
		case ID_VIEW_NAME:
			if (pane->visible_cols) {
				pane->visible_cols = 0;
				calc_widths(pane, TRUE);
#ifndef _NO_EXTENSIONS
				set_header(pane);
#endif
				InvalidateRect(pane->hwnd, 0, TRUE);
				CheckMenuItem(Globals.hMenuView, ID_VIEW_NAME, MF_BYCOMMAND|MF_CHECKED);
				CheckMenuItem(Globals.hMenuView, ID_VIEW_ALL_ATTRIBUTES, MF_BYCOMMAND);
				CheckMenuItem(Globals.hMenuView, ID_VIEW_SELECTED_ATTRIBUTES, MF_BYCOMMAND);
			}
			break;

		case ID_VIEW_ALL_ATTRIBUTES:
			if (pane->visible_cols != COL_ALL) {
				pane->visible_cols = COL_ALL;
				calc_widths(pane, TRUE);
#ifndef _NO_EXTENSIONS
				set_header(pane);
#endif
				InvalidateRect(pane->hwnd, 0, TRUE);
				CheckMenuItem(Globals.hMenuView, ID_VIEW_NAME, MF_BYCOMMAND);
				CheckMenuItem(Globals.hMenuView, ID_VIEW_ALL_ATTRIBUTES, MF_BYCOMMAND|MF_CHECKED);
				CheckMenuItem(Globals.hMenuView, ID_VIEW_SELECTED_ATTRIBUTES, MF_BYCOMMAND);
			}
			break;

#ifndef _NO_EXTENSIONS
		case ID_PREFERED_SIZES: {
			calc_widths(pane, TRUE);
			set_header(pane);
			InvalidateRect(pane->hwnd, 0, TRUE);
			break;}
#endif

		        /* TODO: more command ids... */

		default:
			return FALSE;
	}

	return TRUE;
}


LRESULT CALLBACK ChildWndProc(HWND hwnd, UINT nmsg, WPARAM wparam, LPARAM lparam)
{
	static int last_split;

	ChildWnd* child = (ChildWnd*) GetWindowLong(hwnd, GWL_USERDATA);
	ASSERT(child);

	switch(nmsg) {
		case WM_DRAWITEM: {
			LPDRAWITEMSTRUCT dis = (LPDRAWITEMSTRUCT)lparam;
			Entry* entry = (Entry*) dis->itemData;

			if (dis->CtlID == IDW_TREE_LEFT)
				draw_item(&child->left, dis, entry, -1);
			else
				draw_item(&child->right, dis, entry, -1);

			return TRUE;}

		case WM_CREATE:
			InitChildWindow(child);
			break;

		case WM_NCDESTROY:
			free_child_window(child);
			SetWindowLong(hwnd, GWL_USERDATA, 0);
			break;

		case WM_PAINT: {
			PAINTSTRUCT ps;
			HBRUSH lastBrush;
			RECT rt;
			GetClientRect(hwnd, &rt);
			BeginPaint(hwnd, &ps);
			rt.left = child->split_pos-SPLIT_WIDTH/2;
			rt.right = child->split_pos+SPLIT_WIDTH/2+1;
			lastBrush = SelectBrush(ps.hdc, (HBRUSH)GetStockObject(COLOR_SPLITBAR));
			Rectangle(ps.hdc, rt.left, rt.top-1, rt.right, rt.bottom+1);
			SelectObject(ps.hdc, lastBrush);
#ifdef _NO_EXTENSIONS
			rt.top = rt.bottom - GetSystemMetrics(SM_CYHSCROLL);
			FillRect(ps.hdc, &rt, GetStockObject(BLACK_BRUSH));
#endif
			EndPaint(hwnd, &ps);
			break;}

		case WM_SETCURSOR:
			if (LOWORD(lparam) == HTCLIENT) {
				POINT pt;
				GetCursorPos(&pt);
				ScreenToClient(hwnd, &pt);

				if (pt.x>=child->split_pos-SPLIT_WIDTH/2 && pt.x<child->split_pos+SPLIT_WIDTH/2+1) {
					SetCursor(LoadCursor(0, IDC_SIZEWE));
					return TRUE;
				}
			}
			goto def;

		case WM_LBUTTONDOWN: {
			RECT rt;
			int x = LOWORD(lparam);

			GetClientRect(hwnd, &rt);

			if (x>=child->split_pos-SPLIT_WIDTH/2 && x<child->split_pos+SPLIT_WIDTH/2+1) {
				last_split = child->split_pos;
#ifdef _NO_EXTENSIONS
				draw_splitbar(hwnd, last_split);
#endif
				SetCapture(hwnd);
			}

			break;}

		case WM_LBUTTONUP:
			if (GetCapture() == hwnd) {
#ifdef _NO_EXTENSIONS
				RECT rt;
				int x = LOWORD(lparam);
				draw_splitbar(hwnd, last_split);
				last_split = -1;
				GetClientRect(hwnd, &rt);
				child->split_pos = x;
				resize_tree(child, rt.right, rt.bottom);
#endif
				ReleaseCapture();
			}
			break;

#ifdef _NO_EXTENSIONS
		case WM_CAPTURECHANGED:
			if (GetCapture()==hwnd && last_split>=0)
				draw_splitbar(hwnd, last_split);
			break;
#endif

		case WM_KEYDOWN:
			if (wparam == VK_ESCAPE)
				if (GetCapture() == hwnd) {
					RECT rt;
#ifdef _NO_EXTENSIONS
					draw_splitbar(hwnd, last_split);
#else
					child->split_pos = last_split;
#endif
					GetClientRect(hwnd, &rt);
					resize_tree(child, rt.right, rt.bottom);
					last_split = -1;
					ReleaseCapture();
					SetCursor(LoadCursor(0, IDC_ARROW));
				}
			break;

		case WM_MOUSEMOVE:
			if (GetCapture() == hwnd) {
				RECT rt;
				int x = LOWORD(lparam);

#ifdef _NO_EXTENSIONS
				HDC hdc = GetDC(hwnd);
				GetClientRect(hwnd, &rt);

				rt.left = last_split-SPLIT_WIDTH/2;
				rt.right = last_split+SPLIT_WIDTH/2+1;
				InvertRect(hdc, &rt);

				last_split = x;
				rt.left = x-SPLIT_WIDTH/2;
				rt.right = x+SPLIT_WIDTH/2+1;
				InvertRect(hdc, &rt);

				ReleaseDC(hwnd, hdc);
#else
				GetClientRect(hwnd, &rt);

				if (x>=0 && x<rt.right) {
					child->split_pos = x;
					resize_tree(child, rt.right, rt.bottom);
					rt.left = x-SPLIT_WIDTH/2;
					rt.right = x+SPLIT_WIDTH/2+1;
					InvalidateRect(hwnd, &rt, FALSE);
					UpdateWindow(child->left.hwnd);
					UpdateWindow(hwnd);
					UpdateWindow(child->right.hwnd);
				}
#endif
			}
			break;

#ifndef _NO_EXTENSIONS
		case WM_GETMINMAXINFO:
			DefMDIChildProc(hwnd, nmsg, wparam, lparam);

			{LPMINMAXINFO lpmmi = (LPMINMAXINFO)lparam;

			lpmmi->ptMaxTrackSize.x <<= 1;/*2*GetSystemMetrics(SM_CXSCREEN) / SM_CXVIRTUALSCREEN */
			lpmmi->ptMaxTrackSize.y <<= 1;/*2*GetSystemMetrics(SM_CYSCREEN) / SM_CYVIRTUALSCREEN */
			break;}
#endif

		case WM_SETFOCUS:
			SetCurrentDirectory(child->path);
			SetFocus(child->focus_pane? child->right.hwnd: child->left.hwnd);
			break;

		case WM_DISPATCH_COMMAND: {
			Pane* pane = GetFocus()==child->left.hwnd? &child->left: &child->right;

			switch(LOWORD(wparam)) {
				case ID_WINDOW_NEW: {
					ChildWnd* new_child = alloc_child_window(child->path);

					if (!create_child_window(new_child))
						free(new_child);

					break;}

				case ID_REFRESH:
					scan_entry(child, pane->cur);
					break;

				case ID_ACTIVATE:
					activate_entry(child, pane);
					break;

				default:
					return pane_command(pane, LOWORD(wparam));
			}

			return TRUE;}

		case WM_COMMAND: {
			Pane* pane = GetFocus()==child->left.hwnd? &child->left: &child->right;

			switch(HIWORD(wparam)) {
				case LBN_SELCHANGE: {
					int idx = ListBox_GetCurSel(pane->hwnd);
					Entry* entry = (Entry*) ListBox_GetItemData(pane->hwnd, idx);

					if (pane == &child->left)
						set_curdir(child, entry);
					else
						pane->cur = entry;
					break;}

				case LBN_DBLCLK:
					activate_entry(child, pane);
					break;
			}
			break;}

#ifndef _NO_EXTENSIONS
		case WM_NOTIFY: {
			NMHDR* pnmh = (NMHDR*) lparam;
			return pane_notify(pnmh->idFrom==IDW_HEADER_LEFT? &child->left: &child->right, pnmh);}
#endif

		case WM_SIZE:
			if (wparam != SIZE_MINIMIZED)
				resize_tree(child, LOWORD(lparam), HIWORD(lparam));
			/* fall through */

		default: def:
			return DefMDIChildProc(hwnd, nmsg, wparam, lparam);
	}

	return 0;
}


LRESULT CALLBACK TreeWndProc(HWND hwnd, UINT nmsg, WPARAM wparam, LPARAM lparam)
{
	ChildWnd* child = (ChildWnd*) GetWindowLong(GetParent(hwnd), GWL_USERDATA);
	Pane* pane = (Pane*) GetWindowLong(hwnd, GWL_USERDATA);
	ASSERT(child);

	switch(nmsg) {
#ifndef _NO_EXTENSIONS
		case WM_HSCROLL:
			set_header(pane);
			break;
#endif

		case WM_SETFOCUS:
			child->focus_pane = pane==&child->right? 1: 0;
			ListBox_SetSel(hwnd, TRUE, 1);
			/*TODO: check menu items */
			break;

		case WM_KEYDOWN:
			if (wparam == VK_TAB) {
				/*TODO: SetFocus(Globals.hdrivebar) */
				SetFocus(child->focus_pane? child->left.hwnd: child->right.hwnd);
			}
	}

	return CallWindowProc(g_orgTreeWndProc, hwnd, nmsg, wparam, lparam);
}


static void InitInstance(HINSTANCE hinstance)
{
	WNDCLASSEX wcFrame;
	ATOM hframeClass;
	WNDCLASS wcChild;
	WINE_UNUSED ATOM hChildClass;
	HMENU hMenuFrame = LoadMenu(hinstance, MAKEINTRESOURCE(IDM_WINEFILE));
	HMENU hMenuWindow = GetSubMenu(hMenuFrame, GetMenuItemCount(hMenuFrame)-2);

	CLIENTCREATESTRUCT ccs;

	INITCOMMONCONTROLSEX icc = {
		sizeof(INITCOMMONCONTROLSEX),
		ICC_BAR_CLASSES
	};

	ChildWnd* child;
	TCHAR path[MAX_PATH];

	HDC hdc = GetDC(0);


	wcFrame.cbSize        = sizeof(WNDCLASSEX);
	wcFrame.style         = 0;
	wcFrame.lpfnWndProc   = FrameWndProc;
	wcFrame.cbClsExtra    = 0;
	wcFrame.cbWndExtra    = 0;
	wcFrame.hInstance     = hinstance;
	wcFrame.hIcon         = LoadIcon(hinstance,
					 MAKEINTRESOURCE(IDI_WINEFILE));
	wcFrame.hCursor       = LoadCursor(0, IDC_ARROW);
	wcFrame.hbrBackground = 0;
	wcFrame.lpszMenuName  = 0;
	wcFrame.lpszClassName = WINEFILEFRAME;
	wcFrame.hIconSm       = (HICON)LoadImage(hinstance,
						 MAKEINTRESOURCE(IDI_WINEFILE),
						 IMAGE_ICON,
						 GetSystemMetrics(SM_CXSMICON),
						 GetSystemMetrics(SM_CYSMICON),
						 LR_SHARED);

	/* register frame window class */
	hframeClass = RegisterClassEx(&wcFrame);

	wcChild.style         = CS_CLASSDC|CS_DBLCLKS|CS_VREDRAW;
	wcChild.lpfnWndProc   = ChildWndProc;
	wcChild.cbClsExtra    = 0;
	wcChild.cbWndExtra    = 0;
	wcChild.hInstance     = hinstance;
	wcChild.hIcon         = 0;
	wcChild.hCursor       = LoadCursor(0, IDC_ARROW);
	wcChild.hbrBackground = 0;
	wcChild.lpszMenuName  = 0;
	wcChild.lpszClassName = WINEFILETREE;

	/* register tree windows class */
	hChildClass = RegisterClass(&wcChild);

	ccs.hWindowMenu  = hMenuWindow;
	ccs.idFirstChild = IDW_FIRST_CHILD;

	Globals.hMenuFrame = hMenuFrame;
	Globals.hMenuView = GetSubMenu(hMenuFrame, 3);
	Globals.hMenuOptions = GetSubMenu(hMenuFrame, 4);

	Globals.haccel = LoadAccelerators(hinstance, MAKEINTRESOURCE(IDA_WINEFILE));

	Globals.hfont = CreateFont(-MulDiv(8,GetDeviceCaps(hdc,LOGPIXELSY),72), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, _T("MS Sans Serif"));

	ReleaseDC(0, hdc);

	Globals.hInstance = hinstance;

	/* create main window */
	Globals.hMainWnd = CreateWindowEx(0, (LPCTSTR)(int)hframeClass, _T("Wine File"), WS_OVERLAPPEDWINDOW,
					CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
					0/*hWndParent*/, Globals.hMenuFrame, hinstance, 0/*lpParam*/);


	Globals.hmdiclient = CreateWindowEx(0, _T("MDICLIENT"), NULL,
					WS_CHILD|WS_CLIPCHILDREN|WS_VSCROLL|WS_HSCROLL|WS_VISIBLE|WS_BORDER,
					0, 0, 0, 0,
					Globals.hMainWnd, 0, hinstance, &ccs);


	InitCommonControlsEx(&icc);

	{
		TBBUTTON drivebarBtn = {0, 0, TBSTATE_ENABLED, TBSTYLE_SEP};
		int btn = 1;
		PTSTR p;

		Globals.hdrivebar = CreateToolbarEx(Globals.hMainWnd, WS_CHILD|WS_VISIBLE|CCS_NOMOVEY|TBSTYLE_LIST,
					IDW_DRIVEBAR, 2, Globals.hInstance, IDB_DRIVEBAR, &drivebarBtn,
					1, 16, 13, 16, 13, sizeof(TBBUTTON));
		CheckMenuItem(Globals.hMenuOptions, ID_VIEW_DRIVE_BAR, MF_BYCOMMAND|MF_CHECKED);

		GetLogicalDriveStrings(BUFFER_LEN, Globals.drives);

		drivebarBtn.fsStyle = TBSTYLE_BUTTON;

#ifndef _NO_EXTENSIONS
#ifdef __linux__
		/* insert unix file system button */
		SendMessage(Globals.hdrivebar, TB_ADDSTRING, 0, (LPARAM)_T("/\0"));

		drivebarBtn.idCommand = ID_DRIVE_UNIX_FS;
		SendMessage(Globals.hdrivebar, TB_INSERTBUTTON, btn++, (LPARAM)&drivebarBtn);
		drivebarBtn.iString++;
#endif

		/* register windows drive root strings */
		SendMessage(Globals.hdrivebar, TB_ADDSTRING, 0, (LPARAM)Globals.drives);
#endif

		drivebarBtn.idCommand = ID_DRIVE_FIRST;

		for(p=Globals.drives; *p; ) {
#ifdef _NO_EXTENSIONS
		  /* insert drive letter */
			TCHAR b[3] = {tolower(*p)};
			SendMessage(Globals.hdrivebar, TB_ADDSTRING, 0, (LPARAM)b);
#endif
			switch(GetDriveType(p)) {
				case DRIVE_REMOVABLE:	drivebarBtn.iBitmap = 1;	break;
				case DRIVE_CDROM:		drivebarBtn.iBitmap = 3;	break;
				case DRIVE_REMOTE:		drivebarBtn.iBitmap = 4;	break;
				case DRIVE_RAMDISK:		drivebarBtn.iBitmap = 5;	break;
				default:/*DRIVE_FIXED*/	drivebarBtn.iBitmap = 2;
			}

			SendMessage(Globals.hdrivebar, TB_INSERTBUTTON, btn++, (LPARAM)&drivebarBtn);
			drivebarBtn.idCommand++;
			drivebarBtn.iString++;

			while(*p++);
		}
	}

	{
		TBBUTTON toolbarBtns[] = {
			{0, 0, 0, TBSTYLE_SEP},
			{0, ID_WINDOW_NEW, TBSTATE_ENABLED, TBSTYLE_BUTTON},
			{1, ID_WINDOW_CASCADE, TBSTATE_ENABLED, TBSTYLE_BUTTON},
			{2, ID_WINDOW_TILE_HORZ, TBSTATE_ENABLED, TBSTYLE_BUTTON},
			{3, ID_WINDOW_TILE_VERT, TBSTATE_ENABLED, TBSTYLE_BUTTON},
			{4, 2/*TODO: ID_...*/, TBSTATE_ENABLED, TBSTYLE_BUTTON},
			{5, 2/*TODO: ID_...*/, TBSTATE_ENABLED, TBSTYLE_BUTTON},
		};

		Globals.htoolbar = CreateToolbarEx(Globals.hMainWnd, WS_CHILD|WS_VISIBLE,
			IDW_TOOLBAR, 2, Globals.hInstance, IDB_TOOLBAR, toolbarBtns,
			sizeof(toolbarBtns)/sizeof(TBBUTTON), 16, 15, 16, 15, sizeof(TBBUTTON));
		CheckMenuItem(Globals.hMenuOptions, ID_VIEW_TOOL_BAR, MF_BYCOMMAND|MF_CHECKED);
	}

	Globals.hstatusbar = CreateStatusWindow(WS_CHILD|WS_VISIBLE, 0, Globals.hMainWnd, IDW_STATUSBAR);
	CheckMenuItem(Globals.hMenuOptions, ID_VIEW_STATUSBAR, MF_BYCOMMAND|MF_CHECKED);

/* CreateStatusWindow does not accept WS_BORDER
	Globals.hstatusbar = CreateWindowEx(WS_EX_NOPARENTNOTIFY, STATUSCLASSNAME, 0,
					WS_CHILD|WS_VISIBLE|WS_CLIPSIBLINGS|WS_BORDER|CCS_NODIVIDER, 0,0,0,0,
					Globals.hMainWnd, (HMENU)IDW_STATUSBAR, hinstance, 0);*/

	/*TODO: read paths and window placements from registry */
	GetCurrentDirectory(MAX_PATH, path);
	child = alloc_child_window(path);

	child->pos.showCmd = SW_SHOWMAXIMIZED;
	child->pos.rcNormalPosition.left = 0;
	child->pos.rcNormalPosition.top = 0;
	child->pos.rcNormalPosition.right = 320;
	child->pos.rcNormalPosition.bottom = 280;

	if (!create_child_window(child))
		free(child);

	SetWindowPlacement(child->hwnd, &child->pos);

	Globals.himl = ImageList_LoadBitmap(Globals.hInstance, MAKEINTRESOURCE(IDB_IMAGES), 16, 0, RGB(0,255,0));

	Globals.prescan_node = FALSE;
}

void ExitInstance()
{
	ImageList_Destroy(Globals.himl);
}


#ifdef _NO_EXTENSIONS

/* search for already running win[e]files */

static int g_foundPrevInstance = 0;

static BOOL CALLBACK EnumWndProc(HWND hwnd, LPARAM lparam)
{
	TCHAR cls[128];

	GetClassName(hwnd, cls, 128);

	if (!lstrcmp(cls, (LPCTSTR)lparam)) {
		g_foundPrevInstance++;
		return FALSE;
	}

	return TRUE;
}

#endif


int APIENTRY WinMain(HINSTANCE hinstance,
					 HINSTANCE previnstance,
					 LPSTR	   cmdline,
					 int	   cmdshow)
{
	MSG msg;

#ifdef _NO_EXTENSIONS
	/* allow only one running instance */
	EnumWindows(EnumWndProc, (LPARAM)WINEFILEFRAME);

	if (g_foundPrevInstance)
		return 1;
#endif

	InitInstance(hinstance);

	if (cmdshow == SW_SHOWNORMAL) {
	        /*TODO: read window placement from registry */
		cmdshow = SW_MAXIMIZE;
	}

	ShowWindow(Globals.hMainWnd, cmdshow);
	UpdateWindow(Globals.hMainWnd);

	while(GetMessage(&msg, 0, 0, 0)) {
		if (!TranslateMDISysAccel(Globals.hmdiclient, &msg) &&
			!TranslateAccelerator(Globals.hMainWnd, Globals.haccel, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	ExitInstance();

	return 0;
}