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/*
* Copyright (c) 1993-1994 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and the Network Research Group at
* Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
static const char rcsid[] =
"@(#) $Header: /cs/research/mice/starship/src/local/CVS_repository/vic/iohandler.cc,v 1.4 1999/03/17 15:34:32 piers Exp $ (LBL)";
#include "config.h"
#include "iohandler.h"
#ifdef WIN32
#include "Tcl.h"
#include <stdlib.h>
//#include <winsock.h>
#endif
#ifdef WIN32
extern "C" HINSTANCE Tk_GetHINSTANCE();
LRESULT CALLBACK
IOHandler::WSocketHandler(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
IOHandler* p;
switch (message) {
case WM_CREATE:{
CREATESTRUCT *info = (CREATESTRUCT *) lParam;
SetWindowLong(hwnd, GWL_USERDATA, (DWORD)info->lpCreateParams);
return 0;
}
case WM_DESTROY:
return 0;
case WM_WSOCK_READY:
p = (IOHandler *) GetWindowLong(hwnd, GWL_USERDATA);
if (p == NULL) {
fprintf(stderr, "IOHandler: no GWL_USERDATA\n");
}
else {
p->dispatch(TK_READABLE);
return 0;
}
break;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
#endif
IOHandler::IOHandler() : fd_(-1)
#ifdef WIN32
, hwnd_(0)
#endif
{
#ifdef WIN32
WNDCLASS cl;
/*
* Register the Message window class.
*/
cl.style = CS_HREDRAW | CS_VREDRAW;
cl.lpfnWndProc = WSocketHandler;
cl.cbClsExtra = 0;
cl.cbWndExtra = 0;
cl.hInstance = Tk_GetHINSTANCE();
cl.hIcon = NULL;
cl.hCursor = NULL;
cl.hbrBackground = NULL;
cl.lpszMenuName = NULL;
cl.lpszClassName = "WSocket";
RegisterClass(&cl);
#endif
}
IOHandler::~IOHandler()
{
if (fd_ >= 0)
unlink();
}
void IOHandler::link(int fd, int mask)
{
fd_ = fd;
#ifdef WIN32
int status;
int flags = 0;
if (TK_READABLE & mask)
flags |= FD_READ;
if (TK_WRITABLE & mask)
flags |= FD_WRITE;
hwnd_ = CreateWindow("WSocket", "",
WS_POPUP | WS_CLIPCHILDREN,
CW_USEDEFAULT, CW_USEDEFAULT, 1, 1,
NULL,
NULL, Tk_GetHINSTANCE(), this);
ShowWindow(hwnd_, SW_HIDE);
if ((status = WSAAsyncSelect(fd, hwnd_, WM_WSOCK_READY,
flags)) > 0) {
fprintf(stderr, "WSAAsyncSelect: %d error %lu\n", status, GetLastError());
exit(1);
}
#else
Tk_CreateFileHandler(fd, mask, callback, (ClientData)this);
#endif
}
void IOHandler::unlink()
{
#ifdef WIN32
if (fd_ >= 0 && hwnd_ != 0) {
fprintf(stderr, "Call Tk_DeleteWinMessageHandler(hwnd=%x)\n", hwnd_);
(void) WSAAsyncSelect(fd_, hwnd_, 0, 0);
if (hwnd_) {
(void) DestroyWindow(hwnd_);
hwnd_ = 0;
fd_ = -1;
}
}
#else
if (fd_ >= 0) {
Tk_DeleteFileHandler(fd_);
fd_ = -1;
}
#endif
}
#ifndef WIN32
void IOHandler::callback(ClientData cd, int mask)
{
IOHandler* p = (IOHandler*)cd;
p->dispatch(mask);
}
#endif
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