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