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wxWindows-2.3.3
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helpext.cpp
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C/C++ Source or Header
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2002-08-27
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169 lines
/////////////////////////////////////////////////////////////////////////////
// Name: helpext.cpp
// Purpose: an external help controller for wxWindows
// Author: Karsten Ballueder
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id: helpext.cpp,v 1.23 2002/08/25 18:16:19 SN Exp $
// Copyright: (c) Karsten Ballueder
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
# pragma implementation "wxexthlp.h"
#endif
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_HELP
#ifndef WX_PRECOMP
#include "wx/setup.h"
#include "wx/string.h"
#include "wx/utils.h"
#include "wx/list.h"
#include "wx/intl.h"
#endif
#include "wx/helpbase.h"
#include "wx/generic/helpext.h"
#include <stdio.h>
#include <ctype.h>
#include <sys/stat.h>
#if !defined(__WINDOWS__) && !defined(__OS2__)
#include <unistd.h>
#endif
#ifdef __WXMSW__
#include <windows.h>
#endif
IMPLEMENT_CLASS(wxExtHelpController, wxHTMLHelpControllerBase)
/// Name of environment variable to set help browser.
#define WXEXTHELP_ENVVAR_BROWSER "WX_HELPBROWSER"
/// Is browser a netscape browser?
#define WXEXTHELP_ENVVAR_BROWSERISNETSCAPE "WX_HELPBROWSER_NS"
/**
This class implements help via an external browser.
It requires the name of a directory containing the documentation
and a file mapping numerical Section numbers to relative URLS.
*/
wxExtHelpController::wxExtHelpController(void)
{
m_BrowserName = WXEXTHELP_DEFAULTBROWSER;
m_BrowserIsNetscape = WXEXTHELP_DEFAULTBROWSER_IS_NETSCAPE;
char *browser = getenv(WXEXTHELP_ENVVAR_BROWSER);
if(browser)
{
m_BrowserName = browser;
browser = getenv(WXEXTHELP_ENVVAR_BROWSERISNETSCAPE);
m_BrowserIsNetscape = browser && (atoi(browser) != 0);
}
}
void
wxExtHelpController::SetBrowser(wxString const & browsername, bool isNetscape)
{
m_BrowserName = browsername;
m_BrowserIsNetscape = isNetscape;
}
// Set viewer: new, generic name for SetBrowser
void wxExtHelpController::SetViewer(const wxString& viewer, long flags)
{
SetBrowser(viewer, ((flags & wxHELP_NETSCAPE) == wxHELP_NETSCAPE));
}
bool
wxExtHelpController::DisplayHelp(const wxString &relativeURL)
{
wxBusyCursor b; // display a busy cursor
#if defined(__WXMSW__)
wxString url;
url << m_MapFile << '\\' << relativeURL.BeforeFirst('#');
bool bOk = (int)ShellExecute(NULL, wxT("open"), url.c_str(),
NULL, NULL, SW_SHOWNORMAL ) > 32;
if ( !bOk )
{
wxLogSysError(_("Cannot open URL '%s'"), relativeURL.c_str());
return false;
}
else
return true;
#elif defined(__WXPM__)
wxString url;
url << m_MapFile << '\\' << relativeURL.BeforeFirst('#');
// will have to fix for OS/2, later.....DW
// bool bOk = (int)ShellExecute(NULL, "open", url,
// NULL, NULL, SW_SHOWNORMAL ) > 32;
// if ( !bOk )
// {
// wxLogSysError(_("Cannot open URL '%s'"), relativeURL.c_str());
// return false;
// }
// else
return TRUE;
#elif defined(__DOS__)
wxString command;
command = m_BrowserName;
command << wxT(" file://")
<< m_MapFile << WXEXTHELP_SEPARATOR << relativeURL;
return wxExecute(command) != 0;
#else // UNIX
wxString command;
#ifndef __EMX__
if(m_BrowserIsNetscape) // try re-loading first
{
wxString lockfile;
wxGetHomeDir(&lockfile);
#ifdef __VMS__
lockfile << WXEXTHELP_SEPARATOR << wxT(".netscape]lock.");
struct stat statbuf;
if(stat(lockfile.fn_str(), &statbuf) == 0)
#else
lockfile << WXEXTHELP_SEPARATOR << wxT(".netscape/lock");
struct stat statbuf;
if(lstat(lockfile.fn_str(), &statbuf) == 0)
// cannot use wxFileExists, because it's a link pointing to a
// non-existing location if(wxFileExists(lockfile))
#endif
{
long success;
command << m_BrowserName << wxT(" -remote openURL(")
<< wxT("file://") << m_MapFile
<< WXEXTHELP_SEPARATOR << relativeURL << wxT(")");
success = wxExecute(command);
if(success != 0 ) // returns PID on success
return TRUE;
}
}
#endif
command = m_BrowserName;
command << wxT(" file://")
<< m_MapFile << WXEXTHELP_SEPARATOR << relativeURL;
return wxExecute(command) != 0;
#endif
}
#endif // wxUSE_HELP