/* $Id: windlgmsg.cpp,v 1.16 2002-08-08 12:34:37 sandervl Exp $ */
/*
 * Win32 dialog message APIs for OS/2
 *
 * Copyright 1999 Sander van Leeuwen (OS/2 port & adaption)
 *
 * Based on Corel WINE code (20000317: window\dialog.c)
 * (Based on Wine code (990815: window\dialog.c))
 *
 * Copyright 1993, 1994, 1996 Alexandre Julliard
 *
 * TODO: Dialog accelerator
 *
 * Project Odin Software License can be found in LICENSE.TXT
 *
 */
#include <os2win.h>
#include <misc.h>
#include <string.h>
#include <ctype.h>
#include "win32wbase.h"
#include "win32dlg.h"
#include <winnls.h>
#include <wine\unicode.h>

#define DBG_LOCALLOG    DBG_windlgmsg
#include "dbglocal.h"

//******************************************************************************
//******************************************************************************
LONG WIN32API SendDlgItemMessageA( HWND hwnd, int id, UINT Msg, WPARAM wParam, LPARAM lParam)
{
  Win32Dialog *dialog;
  HWND hwndDlgItem;

    dialog = (Win32Dialog *)Win32BaseWindow::GetWindowFromHandle(hwnd);
    if(!dialog) {
        dprintf(("SendDlgItemMessageA, window %x not found", hwnd));
        return 0;
    }
    hwndDlgItem = dialog->getDlgItem(id);
    RELEASE_WNDOBJ(dialog);
    if(hwndDlgItem) {
        return SendMessageA(hwndDlgItem, Msg, wParam, lParam);
    }
    return 0;
}
//******************************************************************************
//******************************************************************************
LONG WIN32API SendDlgItemMessageW( HWND hwnd, int id, UINT Msg, WPARAM wParam, LPARAM lParam)
{
  Win32Dialog *dialog;
  HWND hwndDlgItem;

    dialog = (Win32Dialog *)Win32BaseWindow::GetWindowFromHandle(hwnd);
    if(!dialog) {
        dprintf(("SendDlgItemMessageW, window %x not found", hwnd));
        return 0;
    }
    hwndDlgItem = dialog->getDlgItem(id);
    RELEASE_WNDOBJ(dialog);
    if(hwndDlgItem) {
        return SendMessageW(hwndDlgItem, Msg, wParam, lParam);
    }
    return 0;
}
/***********************************************************************
 *           DIALOG_IsAccelerator
 */
static BOOL DIALOG_IsAccelerator( HWND hwnd, HWND hwndDlg, WPARAM vKey )
{
    HWND hwndControl = hwnd;
    HWND hwndNext;
    BOOL RetVal = FALSE;
    WCHAR buffer[128];
    INT dlgCode;

#ifdef __WIN32OS2__
    //@PF: Experimental DIALOG_IsAccelerator fix; return FALSE if window is not visible
    //(fixes endless loop in property sheet when switching page with keyboard)
    if (!IsWindowVisible(hwnd))
      return FALSE;
#endif

    if (vKey == VK_SPACE)
    {
        dlgCode = SendMessageA( hwndControl, WM_GETDLGCODE, 0, 0 );
        if (dlgCode & DLGC_BUTTON)
        {
            /* send BM_CLICK message to the control */
            SendMessageA( hwndControl, BM_CLICK, 0, 0 );
            return TRUE;
        }
    }

    do
    {
        DWORD style = GetWindowLongW( hwndControl, GWL_STYLE );
        if ((style & (WS_VISIBLE | WS_DISABLED)) == WS_VISIBLE)
        {
            dlgCode = SendMessageA( hwndControl, WM_GETDLGCODE, 0, 0 );
            if ( (dlgCode & (DLGC_BUTTON | DLGC_STATIC)) &&
                 GetWindowTextW( hwndControl, buffer, sizeof(buffer)/sizeof(WCHAR) ))
            {
                /* find the accelerator key */
                LPWSTR p = buffer - 2;
                char a_char = vKey;
                WCHAR w_char = 0;

                do
                {
                    p = strchrW( p + 2, '&' );
                }
                while (p != NULL && p[1] == '&');

                /* and check if it's the one we're looking for */
                MultiByteToWideChar(CP_ACP, 0, &a_char, 1, &w_char, 1);
                if (p != NULL && toupperW( p[1] ) == toupperW( w_char ) )
                {
                    if ((dlgCode & DLGC_STATIC) || (style & 0x0f) == BS_GROUPBOX )
                    {
                        /* set focus to the control */
                        SendMessageA( hwndDlg, WM_NEXTDLGCTL, (WPARAM)hwndControl, 1);
                        /* and bump it on to next */
                        SendMessageA( hwndDlg, WM_NEXTDLGCTL, 0, 0);
                    }
                    else if (dlgCode & DLGC_BUTTON)
                    {
             	           /* send BM_CLICK message to the control */
                        SendMessageA( hwndControl, BM_CLICK, 0, 0 );
                    }
                    return TRUE;
                }
            }
            hwndNext = GetWindow( hwndControl, GW_CHILD );
        }
        else hwndNext = 0;

        if (!hwndNext) hwndNext = GetWindow( hwndControl, GW_HWNDNEXT );

        while (!hwndNext && hwndControl)
        {
            hwndControl = GetParent( hwndControl );
            if (hwndControl == hwndDlg)
            {
                if(hwnd==hwndDlg)   /* prevent endless loop */
                {
                    hwndNext=hwnd;
                    break;
                }
                hwndNext = GetWindow( hwndDlg, GW_CHILD );
            }
            else
#ifdef __WIN32OS2__
            {
                if(hwndControl == 0) {
                    dprintf(("WARNING: DIALOG_IsAccelerator %x %x -> hwndControl == 0", hwnd, hwndDlg));
                    return FALSE;
                }
                hwndNext = GetWindow( hwndControl, GW_HWNDNEXT );
            }
#else
                hwndNext = GetWindow( hwndControl, GW_HWNDNEXT );
#endif
        }
        hwndControl = hwndNext;
    }
    while (hwndControl && (hwndControl != hwnd));

    return FALSE;
}
/***********************************************************************
 *           DIALOG_FindMsgDestination
 *
 * The messages that IsDialogMessage send may not go to the dialog
 * calling IsDialogMessage if that dialog is a child, and it has the
 * DS_CONTROL style set.
 * We propagate up until we hit a that does not have DS_CONTROL, or
 * whose parent is not a dialog.
 *
 * This is undocumented behaviour.
 */
static HWND DIALOG_FindMsgDestination( HWND hwndDlg )
{
    while (GetWindowLongA(hwndDlg, GWL_STYLE) & DS_CONTROL)
    {
        Win32BaseWindow *pParent;
        HWND hParent = GetParent(hwndDlg);
        if (!hParent) break;

        pParent = Win32BaseWindow::GetWindowFromHandle(hParent);
        if (!pParent) break;

        if (!pParent->IsDialog()) {
            RELEASE_WNDOBJ(pParent);
            break;
        }
        RELEASE_WNDOBJ(pParent);
        hwndDlg = hParent;
    }

    return hwndDlg;
}

/***********************************************************************
 *           DIALOG_IsDialogMessage
 */
static BOOL DIALOG_IsDialogMessage( HWND hwndDlg, BOOL *translate, BOOL *dispatch, INT dlgCode, LPMSG msg )
{
    *translate = *dispatch = FALSE;

    if (msg->message == WM_PAINT)
    {
        /* Apparently, we have to handle this one as well */
        *dispatch = TRUE;
        return TRUE;
    }

      /* Only the key messages get special processing */
    if ((msg->message != WM_KEYDOWN) &&
        (msg->message != WM_SYSCHAR) &&
        (msg->message != WM_CHAR))
    {
#ifdef __WIN32OS2__
        *translate = *dispatch = TRUE;
        return TRUE;
#else
        return FALSE;
#endif
    }

    if (dlgCode & DLGC_WANTMESSAGE)
    {
        *translate = *dispatch = TRUE;
        return TRUE;
    }

    hwndDlg = DIALOG_FindMsgDestination(hwndDlg);

    switch(msg->message)
    {
    case WM_KEYDOWN:
        switch(msg->wParam)
        {
        case VK_TAB:
            if (!(dlgCode & DLGC_WANTTAB))
            {
                SendMessageA( hwndDlg, WM_NEXTDLGCTL,
                             (GetKeyState(VK_SHIFT) & 0x8000), 0 );
                return TRUE;
            }
            break;

        case VK_RIGHT:
        case VK_DOWN:
        case VK_LEFT:
        case VK_UP:
            if (!(dlgCode & DLGC_WANTARROWS))
            {
                BOOL fPrevious = (msg->wParam == VK_LEFT || msg->wParam == VK_UP);
                HWND hwndNext =
                    GetNextDlgGroupItem (hwndDlg, GetFocus(), fPrevious );
                SendMessageA( hwndDlg, WM_NEXTDLGCTL, hwndNext, 1 );
                return TRUE;
            }
            break;

        case VK_ESCAPE:
            SendMessageA( hwndDlg, WM_COMMAND, IDCANCEL,
                            (LPARAM)GetDlgItem( hwndDlg, IDCANCEL ) );
            return TRUE;

        case VK_RETURN:
            {
                DWORD dw = SendMessageA( hwndDlg, DM_GETDEFID, 0, 0 );
                if (HIWORD(dw) == DC_HASDEFID)
                {
                  if (IsWindowEnabled(GetDlgItem(hwndDlg, LOWORD(dw)))) 
                  {
                       SendMessageA( hwndDlg, WM_COMMAND,
                                     MAKEWPARAM( LOWORD(dw), BN_CLICKED ),
                                    (LPARAM)GetDlgItem(hwndDlg, LOWORD(dw)));
                  }
                }
                else
                {
                    // @@PF Win2k here behaves this way: checks focus and then
                    // if it is button clicks it, I also added enabled check
                    HWND hwndCtrl = GetFocus();
                    if (SendMessageA(hwndCtrl, WM_GETDLGCODE, 0, 0) & DLGC_UNDEFPUSHBUTTON)
                    {
                       if (IsWindowEnabled(hwndCtrl))
                         SendMessageA( hwndDlg, WM_COMMAND,
                                       MAKEWPARAM( GetDlgCtrlID(hwndCtrl), BN_CLICKED ),
                                       (LPARAM)hwndCtrl);
                    }
                    else
                       SendMessageA( hwndDlg, WM_COMMAND, IDOK,
                                    (LPARAM)GetDlgItem( hwndDlg, IDOK ) );
                }

                return TRUE;
            }
        }
        *translate = TRUE;
        break; /* case WM_KEYDOWN */

    case WM_CHAR:
        if (dlgCode & DLGC_WANTCHARS) break;
        /* drop through */

    case WM_SYSCHAR:
        if (DIALOG_IsAccelerator( msg->hwnd, hwndDlg, msg->wParam ))
        {
            /* don't translate or dispatch */
            return TRUE;
        }
        break;
    }

    /* If we get here, the message has not been treated specially */
    /* and can be sent to its destination window. */
    *dispatch = TRUE;
    return TRUE;
}
//******************************************************************************
//******************************************************************************
BOOL WIN32API IsDialogMessageA( HWND hwndDlg, LPMSG msg)
{
    BOOL ret, translate, dispatch;
    INT dlgCode;

    if ((hwndDlg != msg->hwnd) && !IsChild( hwndDlg, msg->hwnd ))
        return FALSE;

#ifdef __WIN32OS2__
    if(CallMsgFilterA(msg, HC_ACTION)) {
        return TRUE;
    }
#endif

    dlgCode = SendMessageA( msg->hwnd, WM_GETDLGCODE, 0, (LPARAM)msg);
    ret = DIALOG_IsDialogMessage(hwndDlg,&translate,&dispatch,dlgCode,msg);
    if (translate) TranslateMessage( msg );
    if (dispatch) DispatchMessageA( msg );

    return ret;
}
//******************************************************************************
//******************************************************************************
BOOL WIN32API IsDialogMessageW(HWND hwndDlg, LPMSG msg)
{
    BOOL ret, translate, dispatch;
    INT dlgCode;

    if ((hwndDlg != msg->hwnd) && !IsChild( hwndDlg, msg->hwnd ))
        return FALSE;

#ifdef __WIN32OS2__
    if(CallMsgFilterW(msg, HC_ACTION)) {
        return TRUE;
    }
#endif

    dlgCode = SendMessageW( msg->hwnd, WM_GETDLGCODE, 0, (LPARAM)msg);
    ret = DIALOG_IsDialogMessage(hwndDlg,&translate,&dispatch,dlgCode,msg);
    if (translate) TranslateMessage( msg );
    if (dispatch) DispatchMessageW( msg );
    return ret;
}
//******************************************************************************
//******************************************************************************