-/*-*- c++ -*-********************************************************
- * helpext.cpp - an external help controller for wxWindows *
- * *
- * (C) 1999 by Karsten Ballüder (Ballueder@usa.net) *
- * *
- * $Id$
- *******************************************************************/
-#ifdef __GNUG__
-# pragma implementation "wxexthlp.h"
+/////////////////////////////////////////////////////////////////////////////
+// Name: src/generic/helpext.cpp
+// Purpose: an external help controller for wxWidgets
+// Author: Karsten Ballueder
+// Modified by:
+// Created: 04/01/98
+// RCS-ID: $Id$
+// Copyright: (c) Karsten Ballueder
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
#endif
-#include "wx/setup.h"
-#include "wx/helpbase.h"
-#include "wx/generic/helpext.h"
-#include "wx/string.h"
-#include "wx/utils.h"
-#include "wx/list.h"
-#include <stdio.h>
-#include <ctype.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-IMPLEMENT_CLASS(wxExtHelpController, wxHTMLHelpControllerBase)
-
-/**
- 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);
- }
+#if wxUSE_HELP && !defined(__WXWINCE__)
+
+#ifndef WX_PRECOMP
+ #include "wx/list.h"
+ #include "wx/string.h"
+ #include "wx/utils.h"
+ #include "wx/intl.h"
+ #include "wx/msgdlg.h"
+ #include "wx/choicdlg.h"
+ #include "wx/log.h"
+#endif
+
+#include "wx/filename.h"
+#include "wx/textfile.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 __WINDOWS__
+#include "wx/msw/mslu.h"
+#endif
+
+#ifdef __WXMSW__
+#include <windows.h>
+#include "wx/msw/winundef.h"
+#endif
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// Name for map file.
+#define WXEXTHELP_MAPFILE wxT("wxhelp.map")
+
+// Character introducing comments/documentation field in map file.
+#define WXEXTHELP_COMMENTCHAR ';'
+
+// The ID of the Contents section
+#define WXEXTHELP_CONTENTS_ID 0
+
+// Name of environment variable to set help browser.
+#define WXEXTHELP_ENVVAR_BROWSER wxT("WX_HELPBROWSER")
+
+// Is browser a netscape browser?
+#define WXEXTHELP_ENVVAR_BROWSERISNETSCAPE wxT("WX_HELPBROWSER_NS")
+
+IMPLEMENT_CLASS(wxExtHelpController, wxHelpControllerBase)
+
+wxExtHelpController::wxExtHelpController(wxWindow* parentWindow)
+ : wxHelpControllerBase(parentWindow)
+{
+ m_MapList = NULL;
+ m_NumOfEntries = 0;
+ m_BrowserIsNetscape = false;
+
+ wxChar *browser = wxGetenv(WXEXTHELP_ENVVAR_BROWSER);
+ if (browser)
+ {
+ m_BrowserName = browser;
+ browser = wxGetenv(WXEXTHELP_ENVVAR_BROWSERISNETSCAPE);
+ m_BrowserIsNetscape = browser && (wxAtoi(browser) != 0);
+ }
+}
+
+wxExtHelpController::~wxExtHelpController()
+{
+ DeleteList();
+}
+
+#if WXWIN_COMPATIBILITY_2_8
+void wxExtHelpController::SetBrowser(const wxString& browsername, bool isNetscape)
+{
+ m_BrowserName = browsername;
+ m_BrowserIsNetscape = isNetscape;
+}
+#endif
+
+void wxExtHelpController::SetViewer(const wxString& viewer, long flags)
+{
+ m_BrowserName = viewer;
+ m_BrowserIsNetscape = (flags & wxHELP_NETSCAPE) != 0;
+}
+
+bool wxExtHelpController::DisplayHelp(const wxString &relativeURL)
+{
+ // construct hte URL to open -- it's just a file
+ wxString url(wxT("file://") + m_helpDir);
+ url << wxFILE_SEP_PATH << relativeURL;
+
+ // use the explicit browser program if specified
+ if ( !m_BrowserName.empty() )
+ {
+ if ( m_BrowserIsNetscape )
+ {
+ wxString command;
+ command << m_BrowserName
+ << wxT(" -remote openURL(") << url << wxT(')');
+ if ( wxExecute(command, wxEXEC_SYNC) != -1 )
+ return true;
+ }
+
+ if ( wxExecute(m_BrowserName + wxT(' ') + url, wxEXEC_SYNC) != -1 )
+ return true;
+ }
+ //else: either no browser explicitly specified or we failed to open it
+
+ // just use default browser
+ return wxLaunchDefaultBrowser(url);
+}
+
+class wxExtHelpMapEntry : public wxObject
+{
+public:
+ int entryid;
+ wxString url;
+ wxString doc;
+
+ wxExtHelpMapEntry(int iid, wxString const &iurl, wxString const &idoc)
+ { entryid = iid; url = iurl; doc = idoc; }
+};
+
+void wxExtHelpController::DeleteList()
+{
+ if (m_MapList)
+ {
+ wxList::compatibility_iterator node = m_MapList->GetFirst();
+ while (node)
+ {
+ delete (wxExtHelpMapEntry *)node->GetData();
+ m_MapList->Erase(node);
+ node = m_MapList->GetFirst();
+ }
+
+ wxDELETE(m_MapList);
+ }
+}
+
+// This must be called to tell the controller where to find the documentation.
+// @param file - NOT a filename, but a directory name.
+// @return true on success
+bool wxExtHelpController::Initialize(const wxString& file)
+{
+ return LoadFile(file);
+}
+
+bool wxExtHelpController::ParseMapFileLine(const wxString& line)
+{
+ const wxChar *p = line.c_str();
+
+ // skip whitespace
+ while ( isascii(*p) && wxIsspace(*p) )
+ p++;
+
+ // skip empty lines and comments
+ if ( *p == wxT('\0') || *p == WXEXTHELP_COMMENTCHAR )
+ return true;
+
+ // the line is of the form "num url" so we must have an integer now
+ wxChar *end;
+ const unsigned long id = wxStrtoul(p, &end, 0);
+
+ if ( end == p )
+ return false;
+
+ p = end;
+ while ( isascii(*p) && wxIsspace(*p) )
+ p++;
+
+ // next should be the URL
+ wxString url;
+ url.reserve(line.length());
+ while ( isascii(*p) && !wxIsspace(*p) )
+ url += *p++;
+
+ while ( isascii(*p) && wxIsspace(*p) )
+ p++;
+
+ // and finally the optional description of the entry after comment
+ wxString doc;
+ if ( *p == WXEXTHELP_COMMENTCHAR )
+ {
+ p++;
+ while ( isascii(*p) && wxIsspace(*p) )
+ p++;
+ doc = p;
+ }
+
+ m_MapList->Append(new wxExtHelpMapEntry(id, url, doc));
+ m_NumOfEntries++;
+
+ return true;
+}
+
+// file is a misnomer as it's the name of the base help directory
+bool wxExtHelpController::LoadFile(const wxString& file)
+{
+ wxFileName helpDir(wxFileName::DirName(file));
+ helpDir.MakeAbsolute();
+
+ bool dirExists = false;
+
+#if wxUSE_INTL
+ // If a locale is set, look in file/localename, i.e. If passed
+ // "/usr/local/myapp/help" and the current wxLocale is set to be "de", then
+ // look in "/usr/local/myapp/help/de/" first and fall back to
+ // "/usr/local/myapp/help" if that doesn't exist.
+ const wxLocale * const loc = wxGetLocale();
+ if ( loc )
+ {
+ wxString locName = loc->GetName();
+
+ // the locale is in general of the form xx_YY.zzzz, try the full firm
+ // first and then also more general ones
+ wxFileName helpDirLoc(helpDir);
+ helpDirLoc.AppendDir(locName);
+ dirExists = helpDirLoc.DirExists();
+
+ if ( ! dirExists )
+ {
+ // try without encoding
+ const wxString locNameWithoutEncoding = locName.BeforeLast(wxT('.'));
+ if ( !locNameWithoutEncoding.empty() )
+ {
+ helpDirLoc = helpDir;
+ helpDirLoc.AppendDir(locNameWithoutEncoding);
+ dirExists = helpDirLoc.DirExists();
+ }
+ }
+
+ if ( !dirExists )
+ {
+ // try without country part
+ wxString locNameWithoutCountry = locName.BeforeLast(wxT('_'));
+ if ( !locNameWithoutCountry.empty() )
+ {
+ helpDirLoc = helpDir;
+ helpDirLoc.AppendDir(locNameWithoutCountry);
+ dirExists = helpDirLoc.DirExists();
+ }
+ }
+
+ if ( dirExists )
+ helpDir = helpDirLoc;
+ }
+#endif // wxUSE_INTL
+
+ if ( ! dirExists && !helpDir.DirExists() )
+ {
+ wxLogError(_("Help directory \"%s\" not found."),
+ helpDir.GetFullPath().c_str());
+ return false;
+ }
+
+ const wxFileName mapFile(helpDir.GetFullPath(), WXEXTHELP_MAPFILE);
+ if ( ! mapFile.FileExists() )
+ {
+ wxLogError(_("Help file \"%s\" not found."),
+ mapFile.GetFullPath().c_str());
+ return false;
+ }
+
+ DeleteList();
+ m_MapList = new wxList;
+ m_NumOfEntries = 0;
+
+ wxTextFile input;
+ if ( !input.Open(mapFile.GetFullPath()) )
+ return false;
+
+ for ( wxString& line = input.GetFirstLine();
+ !input.Eof();
+ line = input.GetNextLine() )
+ {
+ if ( !ParseMapFileLine(line) )
+ {
+ wxLogWarning(_("Line %lu of map file \"%s\" has invalid syntax, skipped."),
+ (unsigned long)input.GetCurrentLine(),
+ mapFile.GetFullPath().c_str());
+ }
+ }
+
+ if ( !m_NumOfEntries )
+ {
+ wxLogError(_("No valid mappings found in the file \"%s\"."),
+ mapFile.GetFullPath().c_str());
+ return false;
+ }
+
+ m_helpDir = helpDir.GetFullPath(); // now it's valid
+ return true;
+}
+
+
+bool wxExtHelpController::DisplayContents()
+{
+ if (! m_NumOfEntries)
+ return false;
+
+ wxString contents;
+ wxList::compatibility_iterator node = m_MapList->GetFirst();
+ wxExtHelpMapEntry *entry;
+ while (node)
+ {
+ entry = (wxExtHelpMapEntry *)node->GetData();
+ if (entry->entryid == WXEXTHELP_CONTENTS_ID)
+ {
+ contents = entry->url;
+ break;
+ }
+
+ node = node->GetNext();
+ }
+
+ bool rc = false;
+ wxString file;
+ file << m_helpDir << wxFILE_SEP_PATH << contents;
+ if (file.Contains(wxT('#')))
+ file = file.BeforeLast(wxT('#'));
+ if ( wxFileExists(file) )
+ rc = DisplaySection(WXEXTHELP_CONTENTS_ID);
+
+ // if not found, open homemade toc:
+ return rc ? true : KeywordSearch(wxEmptyString);
+}
+
+bool wxExtHelpController::DisplaySection(int sectionNo)
+{
+ if (! m_NumOfEntries)
+ return false;
+
+ wxBusyCursor b; // display a busy cursor
+ wxList::compatibility_iterator node = m_MapList->GetFirst();
+ wxExtHelpMapEntry *entry;
+ while (node)
+ {
+ entry = (wxExtHelpMapEntry *)node->GetData();
+ if (entry->entryid == sectionNo)
+ return DisplayHelp(entry->url);
+ node = node->GetNext();
+ }
+
+ return false;
}
+bool wxExtHelpController::DisplaySection(const wxString& section)
+{
+ bool isFilename = (section.Find(wxT(".htm")) != -1);
+
+ if (isFilename)
+ return DisplayHelp(section);
+ else
+ return KeywordSearch(section);
+}
-void
-wxExtHelpController::SetBrowser(wxString const & browsername, bool isNetscape)
+bool wxExtHelpController::DisplayBlock(long blockNo)
{
- m_BrowserName = browsername;
- m_BrowserIsNetscape = isNetscape;
+ return DisplaySection((int)blockNo);
}
-bool
-wxExtHelpController::DisplayHelp(wxString const &relativeURL)
+bool wxExtHelpController::KeywordSearch(const wxString& k,
+ wxHelpSearchMode WXUNUSED(mode))
{
- wxBusyCursor b; // display a busy cursor
- wxString command;
+ if (! m_NumOfEntries)
+ return false;
+
+ wxString *choices = new wxString[m_NumOfEntries];
+ wxString *urls = new wxString[m_NumOfEntries];
+
+ int idx = 0;
+ bool rc = false;
+ bool showAll = k.empty();
+
+ wxList::compatibility_iterator node = m_MapList->GetFirst();
- if(m_BrowserIsNetscape) // try re-loading first
{
- wxString lockfile;
- wxGetHomeDir(&lockfile);
- lockfile << WXEXTHELP_SEPARATOR << ".netscape/lock";
- struct stat statbuf;
- if(lstat(lockfile.c_str(), &statbuf) == 0)
- // cannot use wxFileExists, because it's a link pointing to a
- // non-existing location if(wxFileExists(lockfile))
- {
- long success;
- command << m_BrowserName << " -remote openURL("
- << "file://" << m_MapFile
- << WXEXTHELP_SEPARATOR << relativeURL << ")";
- success = wxExecute(command);
- if(success != 0 ) // returns PID on success
- return TRUE;
- }
- }
- command = m_BrowserName;
- command << " file://"
- << m_MapFile << WXEXTHELP_SEPARATOR << relativeURL;
- return wxExecute(command) != 0;
+ // display a busy cursor
+ wxBusyCursor b;
+ wxString compA, compB;
+ wxExtHelpMapEntry *entry;
+
+ // we compare case insensitive
+ if (! showAll)
+ {
+ compA = k;
+ compA.LowerCase();
+ }
+
+ while (node)
+ {
+ entry = (wxExtHelpMapEntry *)node->GetData();
+ compB = entry->doc;
+
+ bool testTarget = ! compB.empty();
+ if (testTarget && ! showAll)
+ {
+ compB.LowerCase();
+ testTarget = compB.Contains(compA);
+ }
+
+ if (testTarget)
+ {
+ urls[idx] = entry->url;
+ // doesn't work:
+ // choices[idx] = (**i).doc.Contains((**i).doc.Before(WXEXTHELP_COMMENTCHAR));
+ //if (choices[idx].empty()) // didn't contain the ';'
+ // choices[idx] = (**i).doc;
+ choices[idx] = wxEmptyString;
+ for (int j=0; ; j++)
+ {
+ wxChar targetChar = entry->doc.c_str()[j];
+ if ((targetChar == 0) || (targetChar == WXEXTHELP_COMMENTCHAR))
+ break;
+
+ choices[idx] << targetChar;
+ }
+
+ idx++;
+ }
+
+ node = node->GetNext();
+ }
+ }
+
+ switch (idx)
+ {
+ case 0:
+ wxMessageBox(_("No entries found."));
+ break;
+
+ case 1:
+ rc = DisplayHelp(urls[0]);
+ break;
+
+ default:
+ if (showAll)
+ idx = wxGetSingleChoiceIndex(_("Help Index"),
+ _("Help Index"),
+ idx, choices);
+ else
+ idx = wxGetSingleChoiceIndex(_("Relevant entries:"),
+ _("Entries found"),
+ idx, choices);
+
+ if (idx >= 0)
+ rc = DisplayHelp(urls[idx]);
+ break;
+ }
+
+ delete [] urls;
+ delete [] choices;
+
+ return rc;
}
+bool wxExtHelpController::Quit()
+{
+ return true;
+}
+
+void wxExtHelpController::OnQuit()
+{
+}
+
+#endif // wxUSE_HELP
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