include/wx/richtext/richtextuicustomization.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/richtext/richtextuicustomization.h
   3 // Purpose:     UI customization base class for wxRTC
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     2010-11-14
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows Licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_RICHTEXTUICUSTOMIZATION_H_
  13 #define _WX_RICHTEXTUICUSTOMIZATION_H_
  14
  15 #if wxUSE_RICHTEXT
  16
  17 #include "wx/window.h"
  18
  19 /**
  20     @class wxRichTextUICustomization
  21     The base class for functionality to plug in to various rich text control dialogs,
  22     currently allowing the application to respond to Help button clicks without the
  23     need to derive new dialog classes.
  24
  25     The application will typically have calls like this in its initialisation:
  26
  27     wxRichTextFormattingDialog::GetHelpInfo().SetHelpId(ID_HELP_FORMATTINGDIALOG);
  28     wxRichTextFormattingDialog::GetHelpInfo().SetUICustomization(& wxGetApp().GetRichTextUICustomization());
  29     wxRichTextBordersPage::GetHelpInfo().SetHelpId(ID_HELP_BORDERSPAGE);
  30
  31     Only the wxRichTextFormattingDialog class needs to have its customization object and help id set,
  32     though the application set them for individual pages if it wants.
  33  **/
  34
  35 class WXDLLIMPEXP_RICHTEXT wxRichTextUICustomization
  36 {
  37 public:
  38     wxRichTextUICustomization() {}
  39     virtual ~wxRichTextUICustomization() {}
  40
  41     /// Show the help given the current active window, and a help topic id.
  42     virtual bool ShowHelp(wxWindow* win, long id) = 0;
  43 };
  44
  45 /**
  46     @class wxRichTextHelpInfo
  47     This class is used as a static member of dialogs, to store the help topic for the dialog
  48     and also the customization object that will allow help to be shown appropriately for the application.
  49  **/
  50
  51 class WXDLLIMPEXP_RICHTEXT wxRichTextHelpInfo
  52 {
  53 public:
  54     wxRichTextHelpInfo()
  55     {
  56         m_helpTopic = -1;
  57         m_uiCustomization = NULL;
  58     }
  59     virtual ~wxRichTextHelpInfo() {}
  60
  61     virtual bool ShowHelp(wxWindow* win)
  62     {
  63         if ( !m_uiCustomization || m_helpTopic == -1 )
  64             return false;
  65
  66         return m_uiCustomization->ShowHelp(win, m_helpTopic);
  67     }
  68
  69     /// Get the help topic identifier.
  70     long GetHelpId() const { return m_helpTopic; }
  71
  72     /// Set the help topic identifier.
  73     void SetHelpId(long id) { m_helpTopic = id; }
  74
  75     /// Get the UI customization object.
  76     wxRichTextUICustomization* GetUICustomization() const { return m_uiCustomization; }
  77
  78     /// Set the UI customization object.
  79     void SetUICustomization(wxRichTextUICustomization* customization) { m_uiCustomization = customization; }
  80
  81     /// Is there a valid help topic id?
  82     bool HasHelpId() const { return m_helpTopic != -1; }
  83
  84     /// Is there a valid customization object?
  85     bool HasUICustomization() const { return m_uiCustomization != NULL; }
  86
  87 protected:
  88     wxRichTextUICustomization*  m_uiCustomization;
  89     long                        m_helpTopic;
  90 };
  91
  92 /// Add this to the base class of dialogs
  93
  94 #define DECLARE_BASE_CLASS_HELP_PROVISION() \
  95     virtual long GetHelpId() const = 0; \
  96     virtual wxRichTextUICustomization* GetUICustomization() const = 0; \
  97     virtual bool ShowHelp(wxWindow* win) = 0;
  98
  99 /// A macro to make it easy to add help topic provision and UI customization
 100 /// to a class. Optionally, add virtual functions to a base class
 101 /// using DECLARE_BASE_CLASS_HELP_PROVISION. This means that the formatting dialog
 102 /// can obtain help topics from its individual pages without needing
 103 /// to know in advance what page classes are being used, allowing for extension
 104 /// of the formatting dialog.
 105
 106 #define DECLARE_HELP_PROVISION() \
 107     virtual long GetHelpId() const { return sm_helpInfo.GetHelpId(); } \
 108     virtual void SetHelpId(long id) { sm_helpInfo.SetHelpId(id); } \
 109     virtual wxRichTextUICustomization* GetUICustomization() const { return sm_helpInfo.GetUICustomization(); } \
 110     virtual void SetUICustomization(wxRichTextUICustomization* customization) { sm_helpInfo.SetUICustomization(customization); } \
 111     virtual bool ShowHelp(wxWindow* win) { return sm_helpInfo.ShowHelp(win); } \
 112 public: \
 113     static wxRichTextHelpInfo& GetHelpInfo() { return sm_helpInfo; }\
 114 protected: \
 115     static wxRichTextHelpInfo sm_helpInfo; \
 116 public:
 117
 118 /// Add this to the implementation file for each dialog that needs help provision.
 119
 120 #define IMPLEMENT_HELP_PROVISION(theClass) \
 121     wxRichTextHelpInfo theClass::sm_helpInfo;
 122
 123 #endif
 124     // wxUSE_RICHTEXT
 125
 126 #endif
 127     // _WX_RICHTEXTUICUSTOMIZATION_H_