X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fb6261e9ba8b162347135a9174afbc81244b10cc..af01f1ba0d697c07173f436ab661b4c833258a91:/include/wx/cshelp.h

diff --git a/include/wx/cshelp.h b/include/wx/cshelp.h
index e4b241f492..e53d48efcc 100644
--- a/include/wx/cshelp.h
+++ b/include/wx/cshelp.h
@@ -1,11 +1,11 @@
 /////////////////////////////////////////////////////////////////////////////
-// 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
+// Copyright:   (c) 2000 Julian Smart, Vadim Zeitlin
 // Licence:   	wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
@@ -13,15 +13,20 @@
 #define _WX_CSHELPH__
 
 #ifdef __GNUG__
-#pragma interface "cshelp.h"
+    #pragma interface "cshelp.h"
 #endif
 
 #include "wx/defs.h"
 
 #if wxUSE_HELP
 
+#include "wx/help.h"
 #include "wx/bmpbuttn.h"
 
+// ----------------------------------------------------------------------------
+// classes used to implement context help UI
+// ----------------------------------------------------------------------------
+
 /*
  * wxContextHelp
  * Invokes context-sensitive help. When the user
@@ -29,12 +34,11 @@
  * window for the application to display help for.
  */
 
-class WXDLLEXPORT wxContextHelp: public wxObject
+class WXDLLEXPORT wxContextHelp : public wxObject
 {
-    DECLARE_DYNAMIC_CLASS(wxContextHelp)
 public:
     wxContextHelp(wxWindow* win = NULL, bool beginHelp = TRUE);
-    ~wxContextHelp();
+    virtual ~wxContextHelp();
 
     bool BeginContextHelp(wxWindow* win);
     bool EndContextHelp();
@@ -45,9 +49,11 @@ public:
     void SetStatus(bool status) { m_status = status; }
 
 protected:
-
     bool    m_inHelp;
     bool    m_status; // TRUE if the user left-clicked
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxContextHelp)
 };
 
 /*
@@ -56,19 +62,120 @@ protected:
  * to put the application into context help mode.
  */
 
-class WXDLLEXPORT wxContextHelpButton: public wxBitmapButton
+class WXDLLEXPORT 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);
 
+private:
     DECLARE_CLASS(wxContextHelpButton)
     DECLARE_EVENT_TABLE()
 };
 
+// ----------------------------------------------------------------------------
+// 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().
+class WXDLLEXPORT 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 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;
+
+    // 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);
+
+    // virtual dtor for any base class
+    virtual ~wxHelpProvider();
+
+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
+{
+public:
+    // implement wxHelpProvider methods
+    virtual wxString GetHelp(const wxWindowBase *window);
+    virtual bool ShowHelp(wxWindowBase *window);
+    virtual void AddHelp(wxWindowBase *window, const wxString& text);
+    virtual void AddHelp(wxWindowID id, const wxString& text);
+
+protected:
+    // we use 2 hashes for storing the help strings associated with windows
+    // and the ids
+    wxStringHashTable 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 WXDLLEXPORT 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);
+
+    // implement wxHelpProvider methods
+    virtual bool ShowHelp(wxWindowBase *window);
+
+    // Other accessors
+    void SetHelpController(wxHelpControllerBase* hc) { m_helpController = hc; }
+    wxHelpControllerBase* GetHelpController() const { return m_helpController; }
+
+protected:
+    wxHelpControllerBase*   m_helpController;
+};
+
+// Convenience function for turning context id into wxString
+WXDLLEXPORT wxString wxContextId(int id);
+
 #endif // wxUSE_HELP
-#endif
-// _WX_CSHELPH__
+
+#endif // _WX_CSHELPH__
+