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 //              Robert Vazan (sizers)
  11 // Created:     15.08.99
  12 // RCS-ID:      $Id$
  13 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
  14 // Licence:     wxWindows licence
  15 ///////////////////////////////////////////////////////////////////////////////
  16
  17 #ifndef _WX_WIZARD_H_
  18 #define _WX_WIZARD_H_
  19
  20 #if wxUSE_WIZARDDLG
  21
  22 // ----------------------------------------------------------------------------
  23 // headers and other simple declarations
  24 // ----------------------------------------------------------------------------
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/dialog.h"      // the base class
  28     #include "wx/panel.h"       // ditto
  29
  30     #include "wx/event.h"       // wxEVT_XXX constants
  31 #endif // WX_PRECOMP
  32
  33 #include "wx/bitmap.h"
  34
  35 // Extended style to specify a help button
  36 #define wxWIZARD_EX_HELPBUTTON   0x00000010
  37
  38 // forward declarations
  39 class WXDLLEXPORT wxWizard;
  40
  41 // ----------------------------------------------------------------------------
  42 // wxWizardPage is one of the wizards screen: it must know what are the
  43 // following and preceding pages (which may be NULL for the first/last page).
  44 //
  45 // Other than GetNext/Prev() functions, wxWizardPage is just a panel and may be
  46 // used as such (i.e. controls may be placed directly on it &c).
  47 // ----------------------------------------------------------------------------
  48
  49 class WXDLLEXPORT wxWizardPage : public wxPanel
  50 {
  51 public:
  52     wxWizardPage() { Init(); }
  53
  54     // ctor accepts an optional bitmap which will be used for this page instead
  55     // of the default one for this wizard (should be of the same size). Notice
  56     // that no other parameters are needed because the wizard will resize and
  57     // reposition the page anyhow
  58     wxWizardPage(wxWizard *parent,
  59                  const wxBitmap& bitmap = wxNullBitmap,
  60                  const wxChar* resource = NULL);
  61
  62     bool Create(wxWizard *parent,
  63                 const wxBitmap& bitmap = wxNullBitmap,
  64                 const wxChar* resource = NULL);
  65
  66     // these functions are used by the wizard to show another page when the
  67     // user chooses "Back" or "Next" button
  68     virtual wxWizardPage *GetPrev() const = 0;
  69     virtual wxWizardPage *GetNext() const = 0;
  70
  71     // default GetBitmap() will just return m_bitmap which is ok in 99% of
  72     // cases - override this method if you want to create the bitmap to be used
  73     // dynamically or to do something even more fancy. It's ok to return
  74     // wxNullBitmap from here - the default one will be used then.
  75     virtual wxBitmap GetBitmap() const { return m_bitmap; }
  76
  77 protected:
  78     // common part of ctors:
  79     void Init();
  80
  81     wxBitmap m_bitmap;
  82
  83 private:
  84     DECLARE_ABSTRACT_CLASS(wxWizardPage)
  85 };
  86
  87 // ----------------------------------------------------------------------------
  88 // wxWizardPageSimple just returns the pointers given to the ctor and is useful
  89 // to create a simple wizard where the order of pages never changes.
  90 //
  91 // OTOH, it is also possible to dynamicly decide which page to return (i.e.
  92 // depending on the user's choices) as the wizard sample shows - in order to do
  93 // this, you must derive from wxWizardPage directly.
  94 // ----------------------------------------------------------------------------
  95
  96 class WXDLLEXPORT wxWizardPageSimple : public wxWizardPage
  97 {
  98 public:
  99     wxWizardPageSimple() { Init(); }
 100
 101     // ctor takes the previous and next pages
 102     wxWizardPageSimple(wxWizard *parent,
 103                        wxWizardPage *prev = (wxWizardPage *)NULL,
 104                        wxWizardPage *next = (wxWizardPage *)NULL,
 105                        const wxBitmap& bitmap = wxNullBitmap,
 106                        const wxChar* resource = NULL)
 107     {
 108         Create(parent, prev, next, bitmap, resource);
 109     }
 110
 111     bool Create(wxWizard *parent = NULL, // let it be default ctor too
 112                 wxWizardPage *prev = (wxWizardPage *)NULL,
 113                 wxWizardPage *next = (wxWizardPage *)NULL,
 114                 const wxBitmap& bitmap = wxNullBitmap,
 115                 const wxChar* resource = NULL)
 116     {
 117         m_prev = prev;
 118         m_next = next;
 119         return wxWizardPage::Create(parent, bitmap, resource);
 120     }
 121
 122     // the pointers may be also set later - but before starting the wizard
 123     void SetPrev(wxWizardPage *prev) { m_prev = prev; }
 124     void SetNext(wxWizardPage *next) { m_next = next; }
 125
 126     // a convenience function to make the pages follow each other
 127     static void Chain(wxWizardPageSimple *first, wxWizardPageSimple *second)
 128     {
 129         wxCHECK_RET( first && second,
 130                      wxT("NULL passed to wxWizardPageSimple::Chain") );
 131
 132         first->SetNext(second);
 133         second->SetPrev(first);
 134     }
 135
 136     // base class pure virtuals
 137     virtual wxWizardPage *GetPrev() const;
 138     virtual wxWizardPage *GetNext() const;
 139
 140 private:
 141     // common part of ctors:
 142     void Init()
 143     {
 144         m_prev = m_next = NULL;
 145     }
 146
 147     // pointers are private, the derived classes shouldn't mess with them -
 148     // just derive from wxWizardPage directly to implement different behaviour
 149     wxWizardPage *m_prev,
 150                  *m_next;
 151
 152     DECLARE_DYNAMIC_CLASS(wxWizardPageSimple)
 153     DECLARE_NO_COPY_CLASS(wxWizardPageSimple)
 154 };
 155
 156 // ----------------------------------------------------------------------------
 157 // wxWizard
 158 // ----------------------------------------------------------------------------
 159
 160 class WXDLLEXPORT wxWizardBase : public wxDialog
 161 {
 162 public:
 163     /*
 164        The derived class (i.e. the real wxWizard) has a ctor and Create()
 165        function taking the following arguments:
 166
 167         wxWizard(wxWindow *parent,
 168                  int id = -1,
 169                  const wxString& title = wxEmptyString,
 170                  const wxBitmap& bitmap = wxNullBitmap,
 171                  const wxPoint& pos = wxDefaultPosition,
 172                  long style = wxDEFAULT_DIALOG_STYLE);
 173     */
 174
 175     // executes the wizard starting from the given page, returns TRUE if it was
 176     // successfully finished, FALSE if user cancelled it
 177     virtual bool RunWizard(wxWizardPage *firstPage) = 0;
 178
 179     // get the current page (NULL if RunWizard() isn't running)
 180     virtual wxWizardPage *GetCurrentPage() const = 0;
 181
 182     // set the min size which should be available for the pages: a
 183     // wizard will take into account the size of the bitmap (if any)
 184     // itself and will never be less than some predefined fixed size
 185     virtual void SetPageSize(const wxSize& size) = 0;
 186
 187     // get the size available for the page
 188     virtual wxSize GetPageSize() const = 0;
 189
 190     // set the best size for the wizard, i.e. make it big enough to contain all
 191     // of the pages starting from the given one
 192     //
 193     // this function may be called several times and possible with different
 194     // pages in which case it will only increase the page size if needed (this
 195     // may be useful if not all pages are accessible from the first one by
 196     // default)
 197     virtual void FitToPage(const wxWizardPage *firstPage) = 0;
 198
 199     // Adding pages to page area sizer enlarges wizard
 200     virtual wxSizer *GetPageAreaSizer() const = 0;
 201
 202     // Set border around page area. Default is 0 if you add at least one
 203     // page to GetPageAreaSizer and 5 if you don't.
 204     virtual void SetBorder(int border) = 0;
 205
 206     // wxWizard should be created using "new wxWizard" now, not with Create()
 207 #ifdef WXWIN_COMPATIBILITY_2_2
 208     static wxWizard *Create(wxWindow *parent,
 209                             int id = -1,
 210                             const wxString& title = wxEmptyString,
 211                             const wxBitmap& bitmap = wxNullBitmap,
 212                             const wxPoint& pos = wxDefaultPosition,
 213                             const wxSize& size = wxDefaultSize);
 214 #endif // WXWIN_COMPATIBILITY_2_2
 215
 216     // the methods below may be overridden by the derived classes to provide
 217     // custom logic for determining the pages order
 218
 219     virtual bool HasNextPage(wxWizardPage *page)
 220         { return page->GetNext() != NULL; }
 221
 222     virtual bool HasPrevPage(wxWizardPage *page)
 223         { return page->GetPrev() != NULL; }
 224 };
 225
 226 // include the real class declaration
 227 #include "wx/generic/wizard.h"
 228
 229 // ----------------------------------------------------------------------------
 230 // wxWizardEvent class represents an event generated by the wizard: this event
 231 // is first sent to the page itself and, if not processed there, goes up the
 232 // window hierarchy as usual
 233 // ----------------------------------------------------------------------------
 234
 235 class WXDLLEXPORT wxWizardEvent : public wxNotifyEvent
 236 {
 237 public:
 238     wxWizardEvent(wxEventType type = wxEVT_NULL,
 239                   int id = -1,
 240                   bool direction = TRUE,
 241                   wxWizardPage* page = NULL);
 242
 243     // for EVT_WIZARD_PAGE_CHANGING, return TRUE if we're going forward or
 244     // FALSE otherwise and for EVT_WIZARD_PAGE_CHANGED return TRUE if we came
 245     // from the previous page and FALSE if we returned from the next one
 246     // (this function doesn't make sense for CANCEL events)
 247     bool GetDirection() const { return m_direction; }
 248
 249     wxWizardPage*   GetPage() const { return m_page; }
 250
 251 private:
 252     bool m_direction;
 253     wxWizardPage*    m_page;
 254
 255     DECLARE_DYNAMIC_CLASS(wxWizardEvent)
 256     DECLARE_NO_COPY_CLASS(wxWizardEvent)
 257 };
 258
 259 // ----------------------------------------------------------------------------
 260 // macros for handling wxWizardEvents
 261 // ----------------------------------------------------------------------------
 262
 263 BEGIN_DECLARE_EVENT_TYPES()
 264     DECLARE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGED, 900)
 265     DECLARE_EVENT_TYPE(wxEVT_WIZARD_PAGE_CHANGING, 901)
 266     DECLARE_EVENT_TYPE(wxEVT_WIZARD_CANCEL, 902)
 267     DECLARE_EVENT_TYPE(wxEVT_WIZARD_HELP, 903)
 268     DECLARE_EVENT_TYPE(wxEVT_WIZARD_FINISHED, 903)
 269 END_DECLARE_EVENT_TYPES()
 270
 271 typedef void (wxEvtHandler::*wxWizardEventFunction)(wxWizardEvent&);
 272
 273 // notifies that the page has just been changed (can't be vetoed)
 274 #define EVT_WIZARD_PAGE_CHANGED(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_PAGE_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 275
 276 // the user pressed "<Back" or "Next>" button and the page is going to be
 277 // changed - unless the event handler vetoes the event
 278 #define EVT_WIZARD_PAGE_CHANGING(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_PAGE_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 279
 280 // the user pressed "Cancel" button and the wizard is going to be dismissed -
 281 // unless the event handler vetoes the event
 282 #define EVT_WIZARD_CANCEL(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_CANCEL, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 283
 284 // the user pressed "Finish" button and the wizard is going to be dismissed -
 285 #define EVT_WIZARD_FINISHED(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_FINISHED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 286
 287 // the user pressed "Help" button
 288 #define EVT_WIZARD_HELP(id, fn) DECLARE_EVENT_TABLE_ENTRY(wxEVT_WIZARD_HELP, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxWizardEventFunction) & fn, (wxObject *)NULL),
 289
 290 #endif // wxUSE_WIZARDDLG
 291
 292 #endif // _WX_WIZARD_H_