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     wxWizardPage() { Init(); }
  50
  51     // ctor accepts an optional bitmap which will be used for this page instead
  52     // of the default one for this wizard (should be of the same size). Notice
  53     // that no other parameters are needed because the wizard will resize and
  54     // reposition the page anyhow
  55     wxWizardPage(wxWizard *parent,
  56                  const wxBitmap& bitmap = wxNullBitmap,
  57                  const wxChar* resource = NULL);
  58
  59     bool Create(wxWizard *parent,
  60                 const wxBitmap& bitmap = wxNullBitmap,
  61                 const wxChar* resource = NULL);
  62
  63     // these functions are used by the wizard to show another page when the
  64     // user chooses "Back" or "Next" button
  65     virtual wxWizardPage *GetPrev() const = 0;
  66     virtual wxWizardPage *GetNext() const = 0;
  67
  68     // default GetBitmap() will just return m_bitmap which is ok in 99% of
  69     // cases - override this method if you want to create the bitmap to be used
  70     // dynamically or to do something even more fancy. It's ok to return
  71     // wxNullBitmap from here - the default one will be used then.
  72     virtual wxBitmap GetBitmap() const { return m_bitmap; }
  73
  74 protected:
  75     // common part of ctors:
  76     void Init();
  77
  78     wxBitmap m_bitmap;
  79
  80 private:
  81     DECLARE_ABSTRACT_CLASS(wxWizardPage)
  82 };
  83
  84 // ----------------------------------------------------------------------------
  85 // wxWizardPageSimple just returns the pointers given to the ctor and is useful
  86 // to create a simple wizard where the order of pages never changes.
  87 //
  88 // OTOH, it is also possible to dynamicly decide which page to return (i.e.
  89 // depending on the user's choices) as the wizard sample shows - in order to do
  90 // this, you must derive from wxWizardPage directly.
  91 // ----------------------------------------------------------------------------
  92
  93 class WXDLLEXPORT wxWizardPageSimple : public wxWizardPage
  94 {
  95 public:
  96     wxWizardPageSimple() { Init(); }
  97
  98     // ctor takes the previous and next pages
  99     wxWizardPageSimple(wxWizard *parent,
 100                        wxWizardPage *prev = (wxWizardPage *)NULL,
 101                        wxWizardPage *next = (wxWizardPage *)NULL,
 102                        const wxBitmap& bitmap = wxNullBitmap,
 103                        const wxChar* resource = NULL)
 104     {
 105         Create(parent, prev, next, bitmap, resource);
 106     }
 107
 108     bool Create(wxWizard *parent = NULL, // let it be default ctor too
 109                 wxWizardPage *prev = (wxWizardPage *)NULL,
 110                 wxWizardPage *next = (wxWizardPage *)NULL,
 111                 const wxBitmap& bitmap = wxNullBitmap,
 112                 const wxChar* resource = NULL)
 113     {
 114         m_prev = prev;
 115         m_next = next;
 116         return wxWizardPage::Create(parent, bitmap, resource);
 117     }
 118
 119     // the pointers may be also set later - but before starting the wizard
 120     void SetPrev(wxWizardPage *prev) { m_prev = prev; }
 121     void SetNext(wxWizardPage *next) { m_next = next; }
 122
 123     // a convenience function to make the pages follow each other
 124     static void Chain(wxWizardPageSimple *first, wxWizardPageSimple *second)
 125     {
 126         wxCHECK_RET( first && second,
 127                      wxT("NULL passed to wxWizardPageSimple::Chain") );
 128
 129         first->SetNext(second);
 130         second->SetPrev(first);
 131     }
 132
 133     // base class pure virtuals
 134     virtual wxWizardPage *GetPrev() const;
 135     virtual wxWizardPage *GetNext() const;
 136
 137 private:
 138     // common part of ctors:
 139     void Init()
 140     {
 141         m_prev = m_next = NULL;
 142     }
 143
 144     // pointers are private, the derived classes shouldn't mess with them -
 145     // just derive from wxWizardPage directly to implement different behaviour
 146     wxWizardPage *m_prev,
 147                  *m_next;
 148
 149     DECLARE_DYNAMIC_CLASS(wxWizardPageSimple)
 150 };
 151
 152 // ----------------------------------------------------------------------------
 153 // wxWizard
 154 // ----------------------------------------------------------------------------
 155
 156 class WXDLLEXPORT wxWizardBase : public wxDialog
 157 {
 158 public:
 159     /*
 160        The derived class (i.e. the real wxWizard) has a ctor and Create()
 161        function taking the following arguments:
 162
 163         wxWizard(wxWindow *parent,
 164                  int id = -1,
 165                  const wxString& title = wxEmptyString,
 166                  const wxBitmap& bitmap = wxNullBitmap,
 167                  const wxPoint& pos = wxDefaultPosition);
 168     */
 169
 170     // executes the wizard starting from the given page, returns TRUE if it was
 171     // successfully finished, FALSE if user cancelled it
 172     virtual bool RunWizard(wxWizardPage *firstPage) = 0;
 173
 174     // get the current page (NULL if RunWizard() isn't running)
 175     virtual wxWizardPage *GetCurrentPage() const = 0;
 176
 177     // set the min size which should be available for the pages: a
 178     // wizard will take into account the size of the bitmap (if any)
 179     // itself and will never be less than some predefined fixed size
 180     virtual void SetPageSize(const wxSize& size) = 0;
 181
 182     // get the size available for the page: the wizards are not resizeable, so
 183     // this size doesn't change
 184     virtual wxSize GetPageSize() const = 0;
 185
 186     // set the best size for the wizard, i.e. make it big enough to contain all
 187     // of the pages starting from the given one
 188     //
 189     // this function may be called several times and possible with different
 190     // pages in which case it will only increase the page size if needed (this
 191     // may be useful if not all pages are accessible from the first one by
 192     // default)
 193     virtual void FitToPage(const wxWizardPage *firstPage) = 0;
 194
 195     // wxWizard should be created using "new wxWizard" now, not with Create()
 196 #ifdef WXWIN_COMPATIBILITY_2_2
 197     static wxWizard *Create(wxWindow *parent,
 198                             int id = -1,
 199                             const wxString& title = wxEmptyString,
 200                             const wxBitmap& bitmap = wxNullBitmap,
 201                             const wxPoint& pos = wxDefaultPosition,
 202                             const wxSize& size = wxDefaultSize);
 203 #endif // WXWIN_COMPATIBILITY_2_2
 204
 205     // the methods below may be overridden by the derived classes to provide
 206     // custom logic for determining the pages order
 207
 208     virtual bool HasNextPage(wxWizardPage *page)
 209         { return page->GetNext() != NULL; }
 210
 211     virtual bool HasPrevPage(wxWizardPage *page)
 212         { return page->GetPrev() != NULL; }
 213 };
 214
 215 // include the real class declaration
 216 #include "wx/generic/wizard.h"
 217
 218 // ----------------------------------------------------------------------------
 219 // wxWizardEvent class represents an event generated by the wizard: this event
 220 // is first sent to the page itself and, if not processed there, goes up the
 221 // window hierarchy as usual
 222 // ----------------------------------------------------------------------------
 223
 224 class WXDLLEXPORT wxWizardEvent : public wxNotifyEvent
 225 {
 226 public:
 227     wxWizardEvent(wxEventType type = wxEVT_NULL,
 228                   int id = -1,
 229                   bool direction = TRUE,
 230                   wxWizardPage* page = NULL);
 231
 232     // for EVT_WIZARD_PAGE_CHANGING, return TRUE if we're going forward or
 233     // FALSE otherwise and for EVT_WIZARD_PAGE_CHANGED return TRUE if we came
 234     // from the previous page and FALSE if we returned from the next one
 235     // (this function doesn't make sense for CANCEL events)
 236     bool GetDirection() const { return m_direction; }
 237
 238     wxWizardPage*   GetPage() const { return m_page; }
 239
 240 private:
 241     bool m_direction;
 242     wxWizardPage*    m_page;
 243
 244     DECLARE_DYNAMIC_CLASS(wxWizardEvent)
 245 };
 246
 247 // ----------------------------------------------------------------------------
 248 // macros for handling wxWizardEvents
 249 // ----------------------------------------------------------------------------
 250
 251 BEGIN_DECLARE_EVENT_TYPES()
 252     DECLARE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGED, 900)
 253     DECLARE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGING, 901)
 254     DECLARE_EVENT_TYPE(wxEVT_WIZARD_CANCEL, 902)
 255     DECLARE_EVENT_TYPE(wxEVT_WIZARD_HELP, 903)
 256     DECLARE_EVENT_TYPE(wxEVT_WIZARD_FINISHED, 903)
 257 END_DECLARE_EVENT_TYPES()
 258
 259 typedef void (wxEvtHandler::*wxWizardEventFunction)(wxWizardEvent&);
 260
 261 // notifies that the page has just been changed (can't be vetoed)
 262 #define EVT_WIZARD_PAGE_CHANGED(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_PAGE_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 263
 264 // the user pressed "<Back" or "Next>" button and the page is going to be
 265 // changed - unless the event handler vetoes the event
 266 #define EVT_WIZARD_PAGE_CHANGING(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_PAGE_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 267
 268 // the user pressed "Cancel" button and the wizard is going to be dismissed -
 269 // unless the event handler vetoes the event
 270 #define EVT_WIZARD_CANCEL(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_CANCEL, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 271
 272 // the user pressed "Finish" button and the wizard is going to be dismissed -
 273 #define EVT_WIZARD_FINISHED(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_FINISHED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 274
 275 // the user pressed "Help" button
 276 #define EVT_WIZARD_HELP(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_HELP, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 277
 278 #endif // wxUSE_WIZARDDLG
 279
 280 #endif // _WX_WIZARD_H_