// Name: src/msw/helpchm.cpp
// Purpose: Help system: MS HTML Help implementation
// Author: Julian Smart
-// Modified by:
+// Modified by: Vadim Zeitlin at 2008-03-01: refactoring, simplification
// Created: 16/04/2000
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
#if wxUSE_HELP && wxUSE_MS_HTML_HELP
-#include "wx/filefn.h"
+#include "wx/filename.h"
#include "wx/msw/helpchm.h"
#include "wx/dynload.h"
#define HTMLHELP_NAME wxT("HtmlHelpW")
#endif
-// dll symbol handle
-static HTMLHELP gs_htmlHelp = 0;
-
-static bool LoadHtmlHelpLibrary()
+HTMLHELP GetHtmlHelpFunction()
{
- wxPluginLibrary *lib = wxPluginManager::LoadLibrary( _T("HHCTRL.OCX"), wxDL_DEFAULT | wxDL_VERBATIM );
+ static HTMLHELP s_htmlHelp = NULL;
- if( !lib )
+ if ( !s_htmlHelp )
{
- wxLogError(_("MS HTML Help functions are unavailable because the MS HTML Help library is not installed on this machine. Please install it."));
- return false;
- }
- else
- {
- gs_htmlHelp = (HTMLHELP)lib->GetSymbol( HTMLHELP_NAME );
+ static wxDynamicLibrary s_dllHtmlHelp(wxT("HHCTRL.OCX"), wxDL_VERBATIM);
- if( !gs_htmlHelp )
+ if ( !s_dllHtmlHelp.IsLoaded() )
{
- wxLogError(_("Failed to initialize MS HTML Help."));
-
- lib->UnrefLib();
- return false ;
+ wxLogError(_("MS HTML Help functions are unavailable because the MS HTML Help library is not installed on this machine. Please install it."));
+ }
+ else
+ {
+ s_htmlHelp = (HTMLHELP)s_dllHtmlHelp.GetSymbol(HTMLHELP_NAME);
+ if ( !s_htmlHelp )
+ {
+ wxLogError(_("Failed to initialize MS HTML Help."));
+ }
}
}
- return true;
+ return s_htmlHelp;
}
-static void UnloadHtmlHelpLibrary()
+// find the window to use in HtmlHelp() call: use the given one by default but
+// fall back to the top level app window and then the desktop if it's NULL
+static HWND GetSuitableHWND(wxWindow *win)
{
- if ( gs_htmlHelp )
- {
- if (wxPluginManager::UnloadLibrary( _T("HHCTRL.OCX") ))
- gs_htmlHelp = 0;
- }
-}
+ if ( !win && wxTheApp )
+ win = wxTheApp->GetTopWindow();
-static HWND GetSuitableHWND(wxCHMHelpController* controller)
-{
- if (controller->GetParentWindow())
- return (HWND) controller->GetParentWindow()->GetHWND();
- else if (wxTheApp->GetTopWindow())
- return (HWND) wxTheApp->GetTopWindow()->GetHWND();
- else
- return GetDesktopWindow();
+ return win ? GetHwndOf(win) : ::GetDesktopWindow();
}
+
IMPLEMENT_DYNAMIC_CLASS(wxCHMHelpController, wxHelpControllerBase)
bool wxCHMHelpController::Initialize(const wxString& filename)
{
- // warn on failure
- if( !LoadHtmlHelpLibrary() )
+ if ( !GetHtmlHelpFunction() )
return false;
m_helpFile = filename;
return true;
}
-bool wxCHMHelpController::DisplayContents()
+/* static */ bool
+wxCHMHelpController::CallHtmlHelp(wxWindow *win,
+ const wxChar *str,
+ unsigned cmd,
+ WXWPARAM param)
{
- if (m_helpFile.IsEmpty()) return false;
+ HTMLHELP htmlHelp = GetHtmlHelpFunction();
- wxString str = GetValidFilename(m_helpFile);
+ return htmlHelp && htmlHelp(GetSuitableHWND(win), str, cmd, param);
+}
- gs_htmlHelp(GetSuitableHWND(this), (const wxChar*) str, HH_DISPLAY_TOPIC, 0L);
- return true;
+bool wxCHMHelpController::DisplayContents()
+{
+ if (m_helpFile.IsEmpty())
+ return false;
+
+ return CallHtmlHelp(HH_DISPLAY_TOPIC);
}
// Use topic or HTML filename
bool wxCHMHelpController::DisplaySection(const wxString& section)
{
- if (m_helpFile.IsEmpty()) return false;
-
- wxString str = GetValidFilename(m_helpFile);
+ if (m_helpFile.IsEmpty())
+ return false;
// Is this an HTML file or a keyword?
- bool isFilename = (section.Find(wxT(".htm")) != wxNOT_FOUND);
+ if ( section.Find(wxT(".htm")) != wxNOT_FOUND )
+ {
+ // interpret as a file name
+ return CallHtmlHelp(HH_DISPLAY_TOPIC, section.wx_str());
+ }
- if (isFilename)
- gs_htmlHelp(GetSuitableHWND(this), (const wxChar*) str, HH_DISPLAY_TOPIC, (DWORD) (const wxChar*) section);
- else
- KeywordSearch(section);
- return true;
+ return KeywordSearch(section);
}
// Use context number
bool wxCHMHelpController::DisplaySection(int section)
{
- if (m_helpFile.IsEmpty()) return false;
-
- wxString str = GetValidFilename(m_helpFile);
+ if (m_helpFile.IsEmpty())
+ return false;
- gs_htmlHelp(GetSuitableHWND(this), (const wxChar*) str, HH_HELP_CONTEXT, (DWORD)section);
- return true;
+ return CallHtmlHelp(HH_HELP_CONTEXT, section);
}
-bool wxCHMHelpController::DisplayContextPopup(int contextId)
+/* static */
+bool
+wxCHMHelpController::DoDisplayTextPopup(const wxChar *text,
+ const wxPoint& pos,
+ int contextId,
+ wxWindow *window)
{
- if (m_helpFile.IsEmpty()) return false;
-
- wxString str = GetValidFilename(m_helpFile);
-
- // We also have to specify the popups file (default is cshelp.txt).
- // str += wxT("::/cshelp.txt");
-
HH_POPUP popup;
popup.cbStruct = sizeof(popup);
popup.hinst = (HINSTANCE) wxGetInstance();
- popup.idString = contextId ;
-
- GetCursorPos(& popup.pt);
- popup.clrForeground = (COLORREF)-1;
- popup.clrBackground = (COLORREF)-1;
- popup.rcMargins.top = popup.rcMargins.left = popup.rcMargins.right = popup.rcMargins.bottom = -1;
+ popup.idString = contextId;
+ popup.pszText = text;
+ popup.pt.x = pos.x;
+ popup.pt.y = pos.y;
+ popup.clrForeground = ::GetSysColor(COLOR_INFOTEXT);
+ popup.clrBackground = ::GetSysColor(COLOR_INFOBK);
+ popup.rcMargins.top =
+ popup.rcMargins.left =
+ popup.rcMargins.right =
+ popup.rcMargins.bottom = -1;
popup.pszFont = NULL;
- popup.pszText = NULL;
- gs_htmlHelp(GetSuitableHWND(this), (const wxChar*) str, HH_DISPLAY_TEXT_POPUP, (DWORD) & popup);
- return true;
+ return CallHtmlHelp(window, NULL, HH_DISPLAY_TEXT_POPUP, &popup);
}
-bool wxCHMHelpController::DisplayTextPopup(const wxString& text, const wxPoint& pos)
+bool wxCHMHelpController::DisplayContextPopup(int contextId)
{
- HH_POPUP popup;
- popup.cbStruct = sizeof(popup);
- popup.hinst = (HINSTANCE) wxGetInstance();
- popup.idString = 0 ;
- popup.pt.x = pos.x; popup.pt.y = pos.y;
- popup.clrForeground = (COLORREF)-1;
- popup.clrBackground = (COLORREF)-1;
- popup.rcMargins.top = popup.rcMargins.left = popup.rcMargins.right = popup.rcMargins.bottom = -1;
- popup.pszFont = NULL;
- popup.pszText = (const wxChar*) text;
+ return DoDisplayTextPopup(NULL, wxGetMousePosition(), contextId,
+ GetParentWindow());
+}
- gs_htmlHelp(GetSuitableHWND(this), NULL, HH_DISPLAY_TEXT_POPUP, (DWORD) & popup);
- return true;
+bool
+wxCHMHelpController::DisplayTextPopup(const wxString& text, const wxPoint& pos)
+{
+ return ShowContextHelpPopup(text, pos, GetParentWindow());
+}
+
+/* static */
+bool wxCHMHelpController::ShowContextHelpPopup(const wxString& text,
+ const wxPoint& pos,
+ wxWindow *window)
+{
+ return DoDisplayTextPopup(text.wx_str(), pos, 0, window);
}
bool wxCHMHelpController::DisplayBlock(long block)
bool wxCHMHelpController::KeywordSearch(const wxString& k,
wxHelpSearchMode WXUNUSED(mode))
{
- if (m_helpFile.IsEmpty()) return false;
-
- wxString str = GetValidFilename(m_helpFile);
+ if (m_helpFile.IsEmpty())
+ return false;
HH_AKLINK link;
- link.cbStruct = sizeof(HH_AKLINK) ;
- link.fReserved = FALSE ;
- link.pszKeywords = k.c_str() ;
- link.pszUrl = NULL ;
- link.pszMsgText = NULL ;
- link.pszMsgTitle = NULL ;
- link.pszWindow = NULL ;
- link.fIndexOnFail = TRUE ;
-
- gs_htmlHelp(GetSuitableHWND(this), (const wxChar*) str, HH_KEYWORD_LOOKUP, (DWORD)& link);
- return true;
+ link.cbStruct = sizeof(HH_AKLINK);
+ link.fReserved = FALSE;
+ link.pszKeywords = k.wx_str();
+ link.pszUrl = NULL;
+ link.pszMsgText = NULL;
+ link.pszMsgTitle = NULL;
+ link.pszWindow = NULL;
+ link.fIndexOnFail = TRUE;
+
+ return CallHtmlHelp(HH_KEYWORD_LOOKUP, &link);
}
bool wxCHMHelpController::Quit()
{
- gs_htmlHelp(GetSuitableHWND(this), 0, HH_CLOSE_ALL, 0L);
-
- return true;
+ return CallHtmlHelp(NULL, NULL, HH_CLOSE_ALL);
}
-// Append extension if necessary.
-wxString wxCHMHelpController::GetValidFilename(const wxString& file) const
+wxString wxCHMHelpController::GetValidFilename() const
{
wxString path, name, ext;
- wxSplitPath(file, & path, & name, & ext);
+ wxFileName::SplitPath(m_helpFile, &path, &name, &ext);
wxString fullName;
if (path.IsEmpty())
return fullName;
}
-wxCHMHelpController::~wxCHMHelpController()
-{
- UnloadHtmlHelpLibrary();
-}
-
#endif // wxUSE_HELP
projects / wxWidgets.git / blobdiff