// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifndef _WX_CSHELPH__
-#define _WX_CSHELPH__
+#ifndef _WX_CSHELP_H_
+#define _WX_CSHELP_H_
#include "wx/defs.h"
#include "wx/bmpbuttn.h"
#endif
+#include "wx/event.h"
+
// ----------------------------------------------------------------------------
// classes used to implement context help UI
// ----------------------------------------------------------------------------
* window for the application to display help for.
*/
-class WXDLLEXPORT wxContextHelp : public wxObject
+class WXDLLIMPEXP_CORE wxContextHelp : public wxObject
{
public:
wxContextHelp(wxWindow* win = NULL, bool beginHelp = true);
* to put the application into context help mode.
*/
-class WXDLLEXPORT wxContextHelpButton : public wxBitmapButton
+class WXDLLIMPEXP_CORE wxContextHelpButton : public wxBitmapButton
{
public:
wxContextHelpButton(wxWindow* parent,
//
// The current help provider must be explicitly set by the application using
// wxHelpProvider::Set().
-class WXDLLEXPORT wxHelpProvider
+//
+// 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 window) for this window
virtual wxString GetHelp(const wxWindowBase *window) = 0;
- // do show help for the given window (uses GetHelp() internally if
- // applicable), return true if it was done or false if no help available
- // for this window
- virtual bool ShowHelp(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, _T("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()
// 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;
};
// 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 WXDLLEXPORT wxSimpleHelpProvider : public wxHelpProvider
+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);
// 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 WXDLLEXPORT wxHelpControllerHelpProvider : public 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 = (wxHelpControllerBase*) NULL);
+ 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
protected:
wxHelpControllerBase* m_helpController;
- DECLARE_NO_COPY_CLASS(wxHelpControllerHelpProvider)
+ wxDECLARE_NO_COPY_CLASS(wxHelpControllerHelpProvider);
};
// Convenience function for turning context id into wxString
-WXDLLEXPORT wxString wxContextId(int id);
+WXDLLIMPEXP_CORE wxString wxContextId(int id);
#endif // wxUSE_HELP
-#endif // _WX_CSHELPH__
+#endif // _WX_CSHELP_H_
projects / wxWidgets.git / blobdiff