/* 
 * tkWinTest.c --
 *
 *	Contains commands for platform specific tests for
 *	the Windows platform.
 *
 * Copyright (c) 1997 Sun Microsystems, Inc.
 * Copyright (c) 2000 by Scriptics Corporation.
 * Copyright (c) 2001 by ActiveState Corporation.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tkWinTest.c,v 1.7 2002/08/14 15:31:21 vincentdarley Exp $
 */

#include "tkWinInt.h"

HWND tkWinCurrentDialog;
 
/*
 * Forward declarations of procedures defined later in this file:
 */

int			TkplatformtestInit(Tcl_Interp *interp);
static int		TestclipboardObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
static int		TestwineventCmd(ClientData clientData, 
			    Tcl_Interp *interp, int argc, CONST char **argv);


/*
 *----------------------------------------------------------------------
 *
 * TkplatformtestInit --
 *
 *	Defines commands that test platform specific functionality for
 *	Unix platforms.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	Defines new commands.
 *
 *----------------------------------------------------------------------
 */

int
TkplatformtestInit(
    Tcl_Interp *interp)		/* Interpreter to add commands to. */
{
    /*
     * Add commands for platform specific tests on MacOS here.
     */
    
    Tcl_CreateObjCommand(interp, "testclipboard", TestclipboardObjCmd,
	    (ClientData) Tk_MainWindow(interp), (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateCommand(interp, "testwinevent", TestwineventCmd,
            (ClientData) Tk_MainWindow(interp), (Tcl_CmdDeleteProc *) NULL);

    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * AppendSystemError --
 *
 *	This routine formats a Windows system error message and places
 *	it into the interpreter result.  Originally from tclWinReg.c.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static void
AppendSystemError(
    Tcl_Interp *interp,		/* Current interpreter. */
    DWORD error)		/* Result code from error. */
{
    int length;
    WCHAR *wMsgPtr;
    char *msg;
    char id[TCL_INTEGER_SPACE], msgBuf[24 + TCL_INTEGER_SPACE];
    Tcl_DString ds;
    Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);

    length = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM
	    | FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, error,
	    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (WCHAR *) &wMsgPtr,
	    0, NULL);
    if (length == 0) {
	char *msgPtr;

	length = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM
		| FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, error,
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (char *) &msgPtr,
		0, NULL);
	if (length > 0) {
	    wMsgPtr = (WCHAR *) LocalAlloc(LPTR, (length + 1) * sizeof(WCHAR));
	    MultiByteToWideChar(CP_ACP, 0, msgPtr, length + 1, wMsgPtr,
		    length + 1);
	    LocalFree(msgPtr);
	}
    }
    if (length == 0) {
	if (error == ERROR_CALL_NOT_IMPLEMENTED) {
	    msg = "function not supported under Win32s";
	} else {
	    sprintf(msgBuf, "unknown error: %ld", error);
	    msg = msgBuf;
	}
    } else {
	Tcl_Encoding encoding;

	encoding = Tcl_GetEncoding(NULL, "unicode");
	msg = Tcl_ExternalToUtfDString(encoding, (char *) wMsgPtr, -1, &ds);
	Tcl_FreeEncoding(encoding);
	LocalFree(wMsgPtr);

	length = Tcl_DStringLength(&ds);

	/*
	 * Trim the trailing CR/LF from the system message.
	 */
	if (msg[length-1] == '\n') {
	    msg[--length] = 0;
	}
	if (msg[length-1] == '\r') {
	    msg[--length] = 0;
	}
    }

    sprintf(id, "%ld", error);
    Tcl_SetErrorCode(interp, "WINDOWS", id, msg, (char *) NULL);
    Tcl_AppendToObj(resultPtr, msg, length);

    if (length != 0) {
	Tcl_DStringFree(&ds);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TestclipboardObjCmd --
 *
 *	This procedure implements the testclipboard command. It provides
 *	a way to determine the actual contents of the Windows clipboard.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static int
TestclipboardObjCmd(clientData, interp, objc, objv)
    ClientData clientData;		/* Main window for application. */
    Tcl_Interp *interp;			/* Current interpreter. */
    int objc;				/* Number of arguments. */
    Tcl_Obj *CONST objv[];		/* Argument values. */
{
    TkWindow *winPtr = (TkWindow *) clientData;
    HGLOBAL handle;
    char *data;
    int code = TCL_OK;

    if (objc != 1) {
	Tcl_WrongNumArgs(interp, 1, objv, (char *) NULL);
	return TCL_ERROR;
    }
    if (OpenClipboard(NULL)) {
	/*
	 * We could consider using CF_UNICODETEXT on NT, but then we
	 * would have to convert it from External.  Instead we'll just
	 * take this and do "bytestring" at the Tcl level for Unicode
	 * inclusive text
	 */
	handle = GetClipboardData(CF_TEXT);
	if (handle != NULL) {
	    data = GlobalLock(handle);
	    Tcl_AppendResult(interp, data, (char *) NULL);
	    GlobalUnlock(handle);
	} else {
	    Tcl_AppendResult(interp, "null clipboard handle", (char *) NULL);
	    code = TCL_ERROR;
	}
	CloseClipboard();
	return code;
    } else {
	Tcl_AppendResult(interp, "couldn't open clipboard: ", (char *) NULL);
	AppendSystemError(interp, GetLastError());
	return TCL_ERROR;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TestwineventCmd --
 *
 *	This procedure implements the testwinevent command. It provides
 *	a way to send messages to windows dialogs.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static int
TestwineventCmd(clientData, interp, argc, argv)
    ClientData clientData;		/* Main window for application. */
    Tcl_Interp *interp;			/* Current interpreter. */
    int argc;				/* Number of arguments. */
    CONST char **argv;			/* Argument strings. */
{
    HWND hwnd = 0;
    int id;
    char *rest;
    UINT message;
    WPARAM wParam;
    LPARAM lParam;
    static TkStateMap messageMap[] = {
	{WM_LBUTTONDOWN,	"WM_LBUTTONDOWN"},
	{WM_LBUTTONUP,		"WM_LBUTTONUP"},
	{WM_CHAR,		"WM_CHAR"},
	{WM_GETTEXT,		"WM_GETTEXT"},
	{WM_SETTEXT,		"WM_SETTEXT"},
	{-1,			NULL}
    };

    if ((argc == 3) && (strcmp(argv[1], "debug") == 0)) {
	int b;

	if (Tcl_GetBoolean(interp, argv[2], &b) != TCL_OK) {
	    return TCL_ERROR;
	}
	TkWinDialogDebug(b);
	return TCL_OK;
    }

    if (argc < 4) {
	return TCL_ERROR;
    }

#if 0
    TkpScanWindowId(interp, argv[1], &id);
    if (
#ifdef _WIN64
	(sscanf(string, "0x%p", &number) != 1) &&
#endif
	Tcl_GetInt(interp, string, (int *)&number) != TCL_OK) {
	return TCL_ERROR;
    }
#endif
    hwnd = (HWND) strtol(argv[1], &rest, 0);
    if (rest == argv[1]) {
	hwnd = FindWindow(NULL, argv[1]);
	if (hwnd == NULL) {
	    Tcl_SetResult(interp, "no such window", TCL_STATIC);
	    return TCL_ERROR;
	}
    }
    UpdateWindow(hwnd);

    id = strtol(argv[2], &rest, 0);
    if (rest == argv[2]) {
	HWND child;
	char buf[256];

	child = GetWindow(hwnd, GW_CHILD);
	while (child != NULL) {
	    SendMessage(child, WM_GETTEXT, (WPARAM) sizeof(buf), (LPARAM) buf);
	    if (strcasecmp(buf, argv[2]) == 0) {
		id = GetDlgCtrlID(child);
		break;
	    }
	    child = GetWindow(child, GW_HWNDNEXT);
	}
	if (child == NULL) {
	    return TCL_ERROR;
	}
    }
    message = TkFindStateNum(NULL, NULL, messageMap, argv[3]);
    if (message < 0) {
	message = strtol(argv[3], NULL, 0);
    }
    wParam = 0;
    lParam = 0;

    if (argc > 4) {
	wParam = strtol(argv[4], NULL, 0);
    }
    if (argc > 5) {
	lParam = strtol(argv[5], NULL, 0);
    }

    switch (message) {
	case WM_GETTEXT: {
	    Tcl_DString ds;
	    char buf[256];

	    GetDlgItemText(hwnd, id, buf, 256);
	    Tcl_ExternalToUtfDString(NULL, buf, -1, &ds);
	    Tcl_AppendResult(interp, Tcl_DStringValue(&ds), NULL);
	    Tcl_DStringFree(&ds);
	    break;
	}
	case WM_SETTEXT: {
	    Tcl_DString ds;

	    Tcl_UtfToExternalDString(NULL, argv[4], -1, &ds);
	    SetDlgItemText(hwnd, id, Tcl_DStringValue(&ds));
	    Tcl_DStringFree(&ds);
	    break;
	}
	default: {
	    char buf[TCL_INTEGER_SPACE];
	    
	    sprintf(buf, "%d", 
		    SendDlgItemMessage(hwnd, id, message, wParam, lParam));
	    Tcl_SetResult(interp, buf, TCL_VOLATILE);
	    break;
	}
    }
    return TCL_OK;
}