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