www.pudn.com > truecrypt-4.2-source-code.zip > Combo.c

/* Legal Notice: The source code contained in this file has been derived from 
   the source code of Encryption for the Masses 2.02a, which is Copyright (c) 
   1998-99 Paul Le Roux and which is covered by the 'License Agreement for 
   Encryption for the Masses'. Modifications and additions to that source code 
   contained in this file are Copyright (c) 2004-2006 TrueCrypt Foundation and 
   Copyright (c) 2004 TrueCrypt Team, and are covered by TrueCrypt License 2.0 
   the full text of which is contained in the file License.txt included in 
   TrueCrypt binary and source code distribution archives.  */ 
 
#include "Tcdefs.h" 
#include "Combo.h" 
#include "Dlgcode.h" 
#include "Xml.h" 
 
#include  
 
#define SIZEOF_MRU_LIST 20 
 
void 
AddComboItem (HWND hComboBox, char *lpszFileName) 
{ 
	LPARAM nIndex; 
 
	nIndex = SendMessage (hComboBox, CB_FINDSTRINGEXACT, (WPARAM) - 1, 
			      (LPARAM) & lpszFileName[0]); 
 
	if (nIndex == CB_ERR && *lpszFileName) 
	{ 
		time_t lTime = time (NULL); 
		nIndex = SendMessage (hComboBox, CB_ADDSTRING, 0, (LPARAM) & lpszFileName[0]); 
		if (nIndex != CB_ERR) 
			SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (LPARAM) lTime); 
	} 
 
	if (nIndex != CB_ERR && *lpszFileName) 
		nIndex = SendMessage (hComboBox, CB_SETCURSEL, nIndex, 0); 
 
	if (*lpszFileName == 0) 
	{ 
		SendMessage (hComboBox, CB_SETCURSEL, (WPARAM) - 1, 0); 
	} 
} 
 
 
LPARAM 
MoveEditToCombo (HWND hComboBox) 
{ 
	char szTmp[256] = 
	{0}; 
 
	GetWindowText (hComboBox, szTmp, sizeof (szTmp)); 
 
	if (strlen (szTmp) > 0) 
	{ 
		LPARAM nIndex = SendMessage (hComboBox, CB_FINDSTRINGEXACT, (WPARAM) - 1, 
					     (LPARAM) & szTmp[0]); 
		if (nIndex == CB_ERR) 
		{ 
			time_t lTime = time (NULL); 
			nIndex = SendMessage (hComboBox, CB_ADDSTRING, 0, (LPARAM) & szTmp[0]); 
			if (nIndex != CB_ERR) 
				SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (DWORD) lTime); 
		} 
		else 
		{ 
			time_t lTime = time (NULL); 
			SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (DWORD) lTime); 
		} 
 
		return nIndex; 
	} 
 
	return SendMessage (hComboBox, CB_GETCURSEL, 0, 0); 
} 
 
int 
GetOrderComboIdx (HWND hComboBox, int *nIdxList, int nElems) 
{ 
	int x = (int) SendMessage (hComboBox, CB_GETCOUNT, 0, 0); 
	if (x != CB_ERR) 
	{ 
		int i, nHighIdx = CB_ERR; 
		time_t lHighTime = -1; 
 
		for (i = 0; i < x; i++) 
		{ 
			time_t lTime = SendMessage (hComboBox, CB_GETITEMDATA, (WPARAM) i, 0); 
			if (lTime > lHighTime) 
			{ 
				int n; 
				for (n = 0; n < nElems; n++) 
					if (nIdxList[n] == i) 
						break; 
				if (n == nElems) 
				{ 
					lHighTime = lTime; 
					nHighIdx = i; 
				} 
			} 
		} 
 
		return nHighIdx; 
	} 
 
	return CB_ERR; 
} 
 
LPARAM 
UpdateComboOrder (HWND hComboBox) 
{ 
	LPARAM nIndex; 
 
	nIndex = SendMessage (hComboBox, CB_GETCURSEL, 0, 0); 
 
	if (nIndex != CB_ERR) 
	{ 
		time_t lTime = time (NULL); 
		nIndex = SendMessage (hComboBox, CB_SETITEMDATA, (WPARAM) nIndex, 
				      (LPARAM) lTime); 
	} 
 
	return nIndex; 
} 
 
void 
LoadCombo (HWND hComboBox) 
{ 
	DWORD size; 
	char *history = LoadFile (GetConfigPath (FILE_HISTORY), &size); 
	char *xml = history; 
	char volume[MAX_PATH]; 
 
	if (xml == NULL) return; 
 
	while (xml = XmlFindElement (xml, "volume")) 
	{ 
		XmlNodeText (xml, volume, sizeof (volume)); 
		AddComboItem (hComboBox, volume); 
		xml++; 
	} 
 
	SendMessage (hComboBox, CB_SETCURSEL, 0, 0); 
 
	free (history); 
} 
 
void 
DumpCombo (HWND hComboBox, int bClear) 
{ 
	FILE *f; 
	int i, nComboIdx[SIZEOF_MRU_LIST]; 
 
	if (bClear) 
	{ 
		DeleteFile (GetConfigPath (FILE_HISTORY)); 
		return; 
	} 
 
	f = fopen (GetConfigPath (FILE_HISTORY), "w"); 
	if (f == NULL) return; 
 
	XmlWriteHeader (f); 
	fputs ("\n\t", f); 
 
	/* combo list part:- get mru items */ 
	for (i = 0; i < SIZEOF_MRU_LIST; i++) 
		nComboIdx[i] = GetOrderComboIdx (hComboBox, &nComboIdx[0], i); 
 
	/* combo list part:- write out mru items */ 
	for (i = 0; i < SIZEOF_MRU_LIST; i++) 
	{ 
		char szTmp[MAX_PATH] = { 0 }; 
		  
		if (SendMessage (hComboBox, CB_GETLBTEXTLEN, nComboIdx[i], 0) < sizeof (szTmp)) 
			SendMessage (hComboBox, CB_GETLBTEXT, nComboIdx[i], (LPARAM) & szTmp[0]); 
 
		if (szTmp[0] != 0) 
			fprintf (f, "\n\t\t%s", szTmp); 
	} 
 
	fputs ("\n\t", f); 
	XmlWriteFooter (f); 
	fclose (f); 
} 
 
void 
ClearCombo (HWND hComboBox) 
{ 
	int i; 
	for (i = 0; i < SIZEOF_MRU_LIST; i++) 
	{ 
		SendMessage (hComboBox, CB_DELETESTRING, 0, 0); 
	} 
} 
 
int 
IsComboEmpty (HWND hComboBox) 
{ 
	return SendMessage (hComboBox, CB_GETCOUNT, 0, 0) < 1; 
}