X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fb6261e9ba8b162347135a9174afbc81244b10cc..a4f6fe43c33bd7933645d110ad2719871dab043d:/include/wx/cshelp.h diff --git a/include/wx/cshelp.h b/include/wx/cshelp.h index e4b241f492..87e0dbd137 100644 --- a/include/wx/cshelp.h +++ b/include/wx/cshelp.h @@ -1,26 +1,33 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: cshelp.h -// Purpose: Context-sensitive help classes -// Author: Julian Smart +// Name: wx/cshelp.h +// Purpose: Context-sensitive help support classes +// Author: Julian Smart, Vadim Zeitlin // Modified by: // Created: 08/09/2000 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart -// Licence: wxWindows licence +// Copyright: (c) 2000 Julian Smart, Vadim Zeitlin +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifndef _WX_CSHELPH__ -#define _WX_CSHELPH__ - -#ifdef __GNUG__ -#pragma interface "cshelp.h" -#endif +#ifndef _WX_CSHELP_H_ +#define _WX_CSHELP_H_ #include "wx/defs.h" #if wxUSE_HELP +#include "wx/help.h" + +#include "wx/hashmap.h" +#if wxUSE_BMPBUTTON #include "wx/bmpbuttn.h" +#endif + +#include "wx/event.h" + +// ---------------------------------------------------------------------------- +// classes used to implement context help UI +// ---------------------------------------------------------------------------- /* * wxContextHelp @@ -29,12 +36,11 @@ * window for the application to display help for. */ -class WXDLLEXPORT wxContextHelp: public wxObject +class WXDLLIMPEXP_CORE wxContextHelp : public wxObject { - DECLARE_DYNAMIC_CLASS(wxContextHelp) public: - wxContextHelp(wxWindow* win = NULL, bool beginHelp = TRUE); - ~wxContextHelp(); + wxContextHelp(wxWindow* win = NULL, bool beginHelp = true); + virtual ~wxContextHelp(); bool BeginContextHelp(wxWindow* win); bool EndContextHelp(); @@ -45,30 +51,194 @@ public: void SetStatus(bool status) { m_status = status; } protected: - bool m_inHelp; - bool m_status; // TRUE if the user left-clicked + bool m_status; // true if the user left-clicked + +private: + DECLARE_DYNAMIC_CLASS(wxContextHelp) }; +#if wxUSE_BMPBUTTON /* * wxContextHelpButton * You can add this to your dialogs (especially on non-Windows platforms) * to put the application into context help mode. */ -class WXDLLEXPORT wxContextHelpButton: public wxBitmapButton +class WXDLLIMPEXP_CORE wxContextHelpButton : public wxBitmapButton { public: - wxContextHelpButton(wxWindow* parent, wxWindowID id = wxID_CONTEXT_HELP, - const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxSize(20, -1), - long style = wxBU_AUTODRAW); + wxContextHelpButton(wxWindow* parent, + wxWindowID id = wxID_CONTEXT_HELP, + const wxPoint& pos = wxDefaultPosition, + const wxSize& size = wxDefaultSize, + long style = wxBU_AUTODRAW); void OnContextHelp(wxCommandEvent& event); - DECLARE_CLASS(wxContextHelpButton) +private: + DECLARE_DYNAMIC_CLASS_NO_COPY(wxContextHelpButton) DECLARE_EVENT_TABLE() }; -#endif // wxUSE_HELP #endif -// _WX_CSHELPH__ + +// ---------------------------------------------------------------------------- +// classes used to implement context help support +// ---------------------------------------------------------------------------- + +// wxHelpProvider is an abstract class used by the program implementing context help to +// show the help text (or whatever: it may be HTML page or anything else) for +// the given window. +// +// The current help provider must be explicitly set by the application using +// wxHelpProvider::Set(). +// +// Special note about ShowHelpAtPoint() and ShowHelp(): we want to be able to +// override ShowHelpAtPoint() when we need to use different help messages for +// different parts of the window, but it should also be possible to override +// just ShowHelp() both for backwards compatibility and just because most +// often the help does not, in fact, depend on the position and so +// implementing just ShowHelp() is simpler and more natural, so by default +// ShowHelpAtPoint() forwards to ShowHelp(). But this means that +// wxSimpleHelpProvider has to override ShowHelp() and not ShowHelpAtPoint() +// for backwards compatibility as otherwise the existing code deriving from it +// and overriding ShowHelp() but calling the base class version wouldn't work +// any more, which forces us to use a rather ugly hack and pass the extra +// parameters of ShowHelpAtPoint() to ShowHelp() via member variables. +class WXDLLIMPEXP_CORE wxHelpProvider +{ +public: + // get/set the current (application-global) help provider (Set() returns + // the previous one) + static wxHelpProvider *Set(wxHelpProvider *helpProvider) + { + wxHelpProvider *helpProviderOld = ms_helpProvider; + ms_helpProvider = helpProvider; + return helpProviderOld; + } + + // unlike some other class, the help provider is not created on demand, + // this must be explicitly done by the application + static wxHelpProvider *Get() { return ms_helpProvider; } + + // get the help string (whose interpretation is help provider dependent + // except that empty string always means that no help is associated with + // the window) for this window + virtual wxString GetHelp(const wxWindowBase *window) = 0; + + // do show help for the given window (uses window->GetHelpAtPoint() + // internally if applicable), return true if it was done or false + // if no help available for this window + virtual bool ShowHelpAtPoint(wxWindowBase *window, + const wxPoint& pt, + wxHelpEvent::Origin origin) + { + wxCHECK_MSG( window, false, wxT("window must not be NULL") ); + + m_helptextAtPoint = pt; + m_helptextOrigin = origin; + + return ShowHelp(window); + } + + // show help for the given window, see ShowHelpAtPoint() above + virtual bool ShowHelp(wxWindowBase * WXUNUSED(window)) { return false; } + + // associate the text with the given window or id: although all help + // providers have these functions to allow making wxWindow::SetHelpText() + // work, not all of them implement them + virtual void AddHelp(wxWindowBase *window, const wxString& text); + + // this version associates the given text with all window with this id + // (may be used to set the same help string for all [Cancel] buttons in + // the application, for example) + virtual void AddHelp(wxWindowID id, const wxString& text); + + // removes the association + virtual void RemoveHelp(wxWindowBase* window); + + // virtual dtor for any base class + virtual ~wxHelpProvider(); + +protected: + wxHelpProvider() + : m_helptextAtPoint(wxDefaultPosition), + m_helptextOrigin(wxHelpEvent::Origin_Unknown) + { + } + + // helper method used by ShowHelp(): returns the help string to use by + // using m_helptextAtPoint/m_helptextOrigin if they're set or just GetHelp + // otherwise + wxString GetHelpTextMaybeAtPoint(wxWindowBase *window); + + + // parameters of the last ShowHelpAtPoint() call, used by ShowHelp() + wxPoint m_helptextAtPoint; + wxHelpEvent::Origin m_helptextOrigin; + +private: + static wxHelpProvider *ms_helpProvider; +}; + +WX_DECLARE_EXPORTED_HASH_MAP( wxUIntPtr, wxString, wxIntegerHash, + wxIntegerEqual, wxSimpleHelpProviderHashMap ); + +// wxSimpleHelpProvider is an implementation of wxHelpProvider which supports +// only plain text help strings and shows the string associated with the +// control (if any) in a tooltip +class WXDLLIMPEXP_CORE wxSimpleHelpProvider : public wxHelpProvider +{ +public: + // implement wxHelpProvider methods + virtual wxString GetHelp(const wxWindowBase *window); + + // override ShowHelp() and not ShowHelpAtPoint() as explained above + virtual bool ShowHelp(wxWindowBase *window); + + virtual void AddHelp(wxWindowBase *window, const wxString& text); + virtual void AddHelp(wxWindowID id, const wxString& text); + virtual void RemoveHelp(wxWindowBase* window); + +protected: + // we use 2 hashes for storing the help strings associated with windows + // and the ids + wxSimpleHelpProviderHashMap m_hashWindows, + m_hashIds; +}; + +// wxHelpControllerHelpProvider is an implementation of wxHelpProvider which supports +// both context identifiers and plain text help strings. If the help text is an integer, +// it is passed to wxHelpController::DisplayContextPopup. Otherwise, it shows the string +// in a tooltip as per wxSimpleHelpProvider. +class WXDLLIMPEXP_CORE wxHelpControllerHelpProvider : public wxSimpleHelpProvider +{ +public: + // Note that it doesn't own the help controller. The help controller + // should be deleted separately. + wxHelpControllerHelpProvider(wxHelpControllerBase* hc = NULL); + + // implement wxHelpProvider methods + + // again (see above): this should be ShowHelpAtPoint() but we need to + // override ShowHelp() to avoid breaking existing code + virtual bool ShowHelp(wxWindowBase *window); + + // Other accessors + void SetHelpController(wxHelpControllerBase* hc) { m_helpController = hc; } + wxHelpControllerBase* GetHelpController() const { return m_helpController; } + +protected: + wxHelpControllerBase* m_helpController; + + wxDECLARE_NO_COPY_CLASS(wxHelpControllerHelpProvider); +}; + +// Convenience function for turning context id into wxString +WXDLLIMPEXP_CORE wxString wxContextId(int id); + +#endif // wxUSE_HELP + +#endif // _WX_CSHELP_H_ +