include/wx/wizard.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wizard.h
   3 // Purpose:     wxWizard class: a GUI control presenting the user with a
   4 //              sequence of dialogs which allows to simply perform some task
   5 // Author:      Vadim Zeitlin (partly based on work by Ron Kuris and Kevin B.
   6 //              Smith)
   7 // Modified by: Robert Cavanaugh
   8 //              Added capability to use .WXR resource files in Wizard pages
   9 //              Added wxWIZARD_HELP event
  10 // Created:     15.08.99
  11 // RCS-ID:      $Id$
  12 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
  13 // Licence:     wxWindows license
  14 ///////////////////////////////////////////////////////////////////////////////
  15
  16 #ifndef _WX_WIZARD_H_
  17 #define _WX_WIZARD_H_
  18
  19 #if wxUSE_WIZARDDLG
  20
  21 // ----------------------------------------------------------------------------
  22 // headers and other simple declarations
  23 // ----------------------------------------------------------------------------
  24
  25 #ifndef WX_PRECOMP
  26     #include "wx/dialog.h"      // the base class
  27     #include "wx/panel.h"       // ditto
  28
  29     #include "wx/event.h"       // wxEVT_XXX constants
  30 #endif // WX_PRECOMP
  31
  32 // Extended style to specify a help button
  33 #define wxWIZARD_EX_HELPBUTTON   0x00000010
  34
  35 // forward declarations
  36 class WXDLLEXPORT wxWizard;
  37
  38 // ----------------------------------------------------------------------------
  39 // wxWizardPage is one of the wizards screen: it must know what are the
  40 // following and preceding pages (which may be NULL for the first/last page).
  41 //
  42 // Other than GetNext/Prev() functions, wxWizardPage is just a panel and may be
  43 // used as such (i.e. controls may be placed directly on it &c).
  44 // ----------------------------------------------------------------------------
  45
  46 class WXDLLEXPORT wxWizardPage : public wxPanel
  47 {
  48 public:
  49     // ctor accepts an optional bitmap which will be used for this page instead
  50     // of the default one for this wizard (should be of the same size). Notice
  51     // that no other parameters are needed because the wizard will resize and
  52     // reposition the page anyhow
  53     wxWizardPage(wxWizard *parent,
  54                 const wxBitmap& bitmap = wxNullBitmap,
  55                 const wxChar* resource = NULL);
  56
  57     // these functions are used by the wizard to show another page when the
  58     // user chooses "Back" or "Next" button
  59     virtual wxWizardPage *GetPrev() const = 0;
  60     virtual wxWizardPage *GetNext() const = 0;
  61
  62     // default GetBitmap() will just return m_bitmap which is ok in 99% of
  63     // cases - override this method if you want to create the bitmap to be used
  64     // dynamically or to do something even more fancy. It's ok to return
  65     // wxNullBitmap from here - the default one will be used then.
  66     virtual wxBitmap GetBitmap() const { return m_bitmap; }
  67
  68 protected:
  69     wxBitmap m_bitmap;
  70
  71 private:
  72     DECLARE_ABSTRACT_CLASS(wxWizardPage)
  73 };
  74
  75 // ----------------------------------------------------------------------------
  76 // wxWizardPageSimple just returns the pointers given to the ctor and is useful
  77 // to create a simple wizard where the order of pages never changes.
  78 //
  79 // OTOH, it is also possible to dynamicly decide which page to return (i.e.
  80 // depending on the user's choices) as the wizard sample shows - in order to do
  81 // this, you must derive from wxWizardPage directly.
  82 // ----------------------------------------------------------------------------
  83
  84 class WXDLLEXPORT wxWizardPageSimple : public wxWizardPage
  85 {
  86 public:
  87     // ctor takes the previous and next pages
  88     wxWizardPageSimple(wxWizard *parent = NULL, // let it be default ctor too
  89                        wxWizardPage *prev = (wxWizardPage *)NULL,
  90                        wxWizardPage *next = (wxWizardPage *)NULL,
  91                        const wxBitmap& bitmap = wxNullBitmap,
  92                        const wxChar* resource = NULL)
  93         : wxWizardPage(parent, bitmap, resource)
  94     {
  95         m_prev = prev;
  96         m_next = next;
  97     }
  98
  99     // the pointers may be also set later - but before starting the wizard
 100     void SetPrev(wxWizardPage *prev) { m_prev = prev; }
 101     void SetNext(wxWizardPage *next) { m_next = next; }
 102
 103     // a convenience function to make the pages follow each other
 104     static void Chain(wxWizardPageSimple *first, wxWizardPageSimple *second)
 105     {
 106         wxCHECK_RET( first && second,
 107                      wxT("NULL passed to wxWizardPageSimple::Chain") );
 108
 109         first->SetNext(second);
 110         second->SetPrev(first);
 111     }
 112
 113     // base class pure virtuals
 114     virtual wxWizardPage *GetPrev() const;
 115     virtual wxWizardPage *GetNext() const;
 116
 117 private:
 118     // pointers are private, the derived classes shouldn't mess with them -
 119     // just derive from wxWizardPage directly to implement different behaviour
 120     wxWizardPage *m_prev,
 121                  *m_next;
 122
 123     DECLARE_DYNAMIC_CLASS(wxWizardPageSimple)
 124 };
 125
 126 // ----------------------------------------------------------------------------
 127 // wxWizard
 128 // ----------------------------------------------------------------------------
 129
 130 class WXDLLEXPORT wxWizardBase : public wxDialog
 131 {
 132 public:
 133     // create the wizard control
 134     static wxWizard *Create(wxWindow *parent,
 135                             int id = -1,
 136                             const wxString& title = wxEmptyString,
 137                             const wxBitmap& bitmap = wxNullBitmap,
 138                             const wxPoint& pos = wxDefaultPosition,
 139                             const wxSize& size = wxDefaultSize);
 140
 141     // executes the wizard starting from the given page, returns TRUE if it was
 142     // successfully finished, FALSE if user cancelled it
 143     virtual bool RunWizard(wxWizardPage *firstPage) = 0;
 144
 145     // get the current page (NULL if RunWizard() isn't running)
 146     virtual wxWizardPage *GetCurrentPage() const = 0;
 147
 148     // set the min size which should be available for the pages: a
 149     // wizard will take into account the size of the bitmap (if any)
 150     // itself and will never be less than some predefined fixed size
 151     virtual void SetPageSize(const wxSize& size) = 0;
 152
 153     // get the size available for the page: the wizards are not resizeable, so
 154     // this size doesn't change
 155     virtual wxSize GetPageSize() const = 0;
 156 };
 157
 158 // include the real class declaration
 159 #include "wx/generic/wizard.h"
 160
 161 // ----------------------------------------------------------------------------
 162 // wxWizardEvent class represents an event generated by the wizard: this event
 163 // is first sent to the page itself and, if not processed there, goes up the
 164 // window hierarchy as usual
 165 // ----------------------------------------------------------------------------
 166
 167 class WXDLLEXPORT wxWizardEvent : public wxNotifyEvent
 168 {
 169 public:
 170     wxWizardEvent(wxEventType type = wxEVT_NULL,
 171                   int id = -1,
 172                   bool direction = TRUE,
 173                   wxWizardPage* page = NULL);
 174
 175     // for EVT_WIZARD_PAGE_CHANGING, return TRUE if we're going forward or
 176     // FALSE otherwise and for EVT_WIZARD_PAGE_CHANGED return TRUE if we came
 177     // from the previous page and FALSE if we returned from the next one
 178     // (this function doesn't make sense for CANCEL events)
 179     bool GetDirection() const { return m_direction; }
 180
 181     wxWizardPage*   GetPage() const { return m_page; }
 182
 183 private:
 184     bool m_direction;
 185     wxWizardPage*    m_page;
 186
 187     DECLARE_DYNAMIC_CLASS(wxWizardEvent)
 188 };
 189
 190 // ----------------------------------------------------------------------------
 191 // macros for handling wxWizardEvents
 192 // ----------------------------------------------------------------------------
 193
 194 BEGIN_DECLARE_EVENT_TYPES()
 195     DECLARE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGED, 900)
 196     DECLARE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGING, 901)
 197     DECLARE_EVENT_TYPE(wxEVT_WIZARD_CANCEL, 902)
 198     DECLARE_EVENT_TYPE(wxEVT_WIZARD_HELP, 903)
 199 END_DECLARE_EVENT_TYPES()
 200
 201 typedef void (wxEvtHandler::*wxWizardEventFunction)(wxWizardEvent&);
 202
 203 // notifies that the page has just been changed (can't be vetoed)
 204 #define EVT_WIZARD_PAGE_CHANGED(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_PAGE_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 205
 206 // the user pressed "<Back" or "Next>" button and the page is going to be
 207 // changed - unless the event handler vetoes the event
 208 #define EVT_WIZARD_PAGE_CHANGING(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_PAGE_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 209
 210 // the user pressed "Cancel" button and the wizard is going to be dismissed -
 211 // unless the event handler vetoes the event
 212 #define EVT_WIZARD_CANCEL(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_CANCEL, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 213
 214 // the user pressed "Help" button
 215 #define EVT_WIZARD_HELP(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_HELP, id, -1, (wxObjectEventFunction) (wxEventFunction) wxWizardEventFunction) & fn, (wxObject *)NULL),
 216
 217 #endif // wxUSE_WIZARDDLG
 218
 219 #endif // _WX_WIZARD_H_