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 #include "wx/defs.h"
  21
  22 #if wxUSE_WIZARDDLG
  23
  24 // ----------------------------------------------------------------------------
  25 // headers and other simple declarations
  26 // ----------------------------------------------------------------------------
  27
  28 #include "wx/dialog.h"      // the base class
  29 #include "wx/panel.h"       // ditto
  30 #include "wx/event.h"       // wxEVT_XXX constants
  31 #include "wx/bitmap.h"
  32
  33 // Extended style to specify a help button
  34 #define wxWIZARD_EX_HELPBUTTON   0x00000010
  35
  36 // forward declarations
  37 class WXDLLIMPEXP_FWD_ADV wxWizard;
  38
  39 // ----------------------------------------------------------------------------
  40 // wxWizardPage is one of the wizards screen: it must know what are the
  41 // following and preceding pages (which may be NULL for the first/last page).
  42 //
  43 // Other than GetNext/Prev() functions, wxWizardPage is just a panel and may be
  44 // used as such (i.e. controls may be placed directly on it &c).
  45 // ----------------------------------------------------------------------------
  46
  47 class WXDLLIMPEXP_ADV wxWizardPage : public wxPanel
  48 {
  49 public:
  50     wxWizardPage() { Init(); }
  51
  52     // ctor accepts an optional bitmap which will be used for this page instead
  53     // of the default one for this wizard (should be of the same size). Notice
  54     // that no other parameters are needed because the wizard will resize and
  55     // reposition the page anyhow
  56     wxWizardPage(wxWizard *parent,
  57                  const wxBitmap& bitmap = wxNullBitmap);
  58
  59     bool Create(wxWizard *parent,
  60                 const wxBitmap& bitmap = wxNullBitmap);
  61
  62     // these functions are used by the wizard to show another page when the
  63     // user chooses "Back" or "Next" button
  64     virtual wxWizardPage *GetPrev() const = 0;
  65     virtual wxWizardPage *GetNext() const = 0;
  66
  67     // default GetBitmap() will just return m_bitmap which is ok in 99% of
  68     // cases - override this method if you want to create the bitmap to be used
  69     // dynamically or to do something even more fancy. It's ok to return
  70     // wxNullBitmap from here - the default one will be used then.
  71     virtual wxBitmap GetBitmap() const { return m_bitmap; }
  72
  73 #if wxUSE_VALIDATORS
  74     // Override the base functions to allow a validator to be assigned to this page.
  75     virtual bool TransferDataToWindow()
  76     {
  77         return GetValidator() ? GetValidator()->TransferToWindow()
  78                               : wxPanel::TransferDataToWindow();
  79     }
  80
  81     virtual bool TransferDataFromWindow()
  82     {
  83         return GetValidator() ? GetValidator()->TransferFromWindow()
  84                               : wxPanel::TransferDataFromWindow();
  85     }
  86
  87     virtual bool Validate()
  88     {
  89         return GetValidator() ? GetValidator()->Validate(this)
  90                               : wxPanel::Validate();
  91     }
  92 #endif // wxUSE_VALIDATORS
  93
  94 protected:
  95     // common part of ctors:
  96     void Init();
  97
  98     wxBitmap m_bitmap;
  99
 100 private:
 101     DECLARE_DYNAMIC_CLASS_NO_COPY(wxWizardPage)
 102 };
 103
 104 // ----------------------------------------------------------------------------
 105 // wxWizardPageSimple just returns the pointers given to the ctor and is useful
 106 // to create a simple wizard where the order of pages never changes.
 107 //
 108 // OTOH, it is also possible to dynamicly decide which page to return (i.e.
 109 // depending on the user's choices) as the wizard sample shows - in order to do
 110 // this, you must derive from wxWizardPage directly.
 111 // ----------------------------------------------------------------------------
 112
 113 class WXDLLIMPEXP_ADV wxWizardPageSimple : public wxWizardPage
 114 {
 115 public:
 116     wxWizardPageSimple() { Init(); }
 117
 118     // ctor takes the previous and next pages
 119     wxWizardPageSimple(wxWizard *parent,
 120                        wxWizardPage *prev = (wxWizardPage *)NULL,
 121                        wxWizardPage *next = (wxWizardPage *)NULL,
 122                        const wxBitmap& bitmap = wxNullBitmap)
 123     {
 124         Create(parent, prev, next, bitmap);
 125     }
 126
 127     bool Create(wxWizard *parent = NULL, // let it be default ctor too
 128                 wxWizardPage *prev = (wxWizardPage *)NULL,
 129                 wxWizardPage *next = (wxWizardPage *)NULL,
 130                 const wxBitmap& bitmap = wxNullBitmap)
 131     {
 132         m_prev = prev;
 133         m_next = next;
 134         return wxWizardPage::Create(parent, bitmap);
 135     }
 136
 137     // the pointers may be also set later - but before starting the wizard
 138     void SetPrev(wxWizardPage *prev) { m_prev = prev; }
 139     void SetNext(wxWizardPage *next) { m_next = next; }
 140
 141     // a convenience function to make the pages follow each other
 142     static void Chain(wxWizardPageSimple *first, wxWizardPageSimple *second)
 143     {
 144         wxCHECK_RET( first && second,
 145                      wxT("NULL passed to wxWizardPageSimple::Chain") );
 146
 147         first->SetNext(second);
 148         second->SetPrev(first);
 149     }
 150
 151     // base class pure virtuals
 152     virtual wxWizardPage *GetPrev() const;
 153     virtual wxWizardPage *GetNext() const;
 154
 155 private:
 156     // common part of ctors:
 157     void Init()
 158     {
 159         m_prev = m_next = NULL;
 160     }
 161
 162     // pointers are private, the derived classes shouldn't mess with them -
 163     // just derive from wxWizardPage directly to implement different behaviour
 164     wxWizardPage *m_prev,
 165                  *m_next;
 166
 167     DECLARE_DYNAMIC_CLASS_NO_COPY(wxWizardPageSimple)
 168 };
 169
 170 // ----------------------------------------------------------------------------
 171 // wxWizard
 172 // ----------------------------------------------------------------------------
 173
 174 class WXDLLIMPEXP_ADV wxWizardBase : public wxDialog
 175 {
 176 public:
 177     /*
 178        The derived class (i.e. the real wxWizard) has a ctor and Create()
 179        function taking the following arguments:
 180
 181         wxWizard(wxWindow *parent,
 182                  int id = wxID_ANY,
 183                  const wxString& title = wxEmptyString,
 184                  const wxBitmap& bitmap = wxNullBitmap,
 185                  const wxPoint& pos = wxDefaultPosition,
 186                  long style = wxDEFAULT_DIALOG_STYLE);
 187     */
 188     wxWizardBase() { }
 189
 190     // executes the wizard starting from the given page, returns true if it was
 191     // successfully finished, false if user cancelled it
 192     virtual bool RunWizard(wxWizardPage *firstPage) = 0;
 193
 194     // get the current page (NULL if RunWizard() isn't running)
 195     virtual wxWizardPage *GetCurrentPage() const = 0;
 196
 197     // set the min size which should be available for the pages: a
 198     // wizard will take into account the size of the bitmap (if any)
 199     // itself and will never be less than some predefined fixed size
 200     virtual void SetPageSize(const wxSize& size) = 0;
 201
 202     // get the size available for the page
 203     virtual wxSize GetPageSize() const = 0;
 204
 205     // set the best size for the wizard, i.e. make it big enough to contain all
 206     // of the pages starting from the given one
 207     //
 208     // this function may be called several times and possible with different
 209     // pages in which case it will only increase the page size if needed (this
 210     // may be useful if not all pages are accessible from the first one by
 211     // default)
 212     virtual void FitToPage(const wxWizardPage *firstPage) = 0;
 213
 214     // Adding pages to page area sizer enlarges wizard
 215     virtual wxSizer *GetPageAreaSizer() const = 0;
 216
 217     // Set border around page area. Default is 0 if you add at least one
 218     // page to GetPageAreaSizer and 5 if you don't.
 219     virtual void SetBorder(int border) = 0;
 220
 221     // the methods below may be overridden by the derived classes to provide
 222     // custom logic for determining the pages order
 223
 224     virtual bool HasNextPage(wxWizardPage *page)
 225         { return page->GetNext() != NULL; }
 226
 227     virtual bool HasPrevPage(wxWizardPage *page)
 228         { return page->GetPrev() != NULL; }
 229
 230     /// Override these functions to stop InitDialog from calling TransferDataToWindow
 231     /// for _all_ pages when the wizard starts. Instead 'ShowPage' will call
 232     /// TransferDataToWindow for the first page only.
 233     bool TransferDataToWindow() { return true; }
 234     bool TransferDataFromWindow() { return true; }
 235     bool Validate() { return true; }
 236
 237 private:
 238     DECLARE_NO_COPY_CLASS(wxWizardBase)
 239 };
 240
 241 // include the real class declaration
 242 #include "wx/generic/wizard.h"
 243
 244 // ----------------------------------------------------------------------------
 245 // wxWizardEvent class represents an event generated by the wizard: this event
 246 // is first sent to the page itself and, if not processed there, goes up the
 247 // window hierarchy as usual
 248 // ----------------------------------------------------------------------------
 249
 250 class WXDLLIMPEXP_ADV wxWizardEvent : public wxNotifyEvent
 251 {
 252 public:
 253     wxWizardEvent(wxEventType type = wxEVT_NULL,
 254                   int id = wxID_ANY,
 255                   bool direction = true,
 256                   wxWizardPage* page = NULL);
 257
 258     // for EVT_WIZARD_PAGE_CHANGING, return true if we're going forward or
 259     // false otherwise and for EVT_WIZARD_PAGE_CHANGED return true if we came
 260     // from the previous page and false if we returned from the next one
 261     // (this function doesn't make sense for CANCEL events)
 262     bool GetDirection() const { return m_direction; }
 263
 264     wxWizardPage*   GetPage() const { return m_page; }
 265
 266 private:
 267     bool m_direction;
 268     wxWizardPage*    m_page;
 269
 270     DECLARE_DYNAMIC_CLASS(wxWizardEvent)
 271     DECLARE_NO_COPY_CLASS(wxWizardEvent)
 272 };
 273
 274 // ----------------------------------------------------------------------------
 275 // macros for handling wxWizardEvents
 276 // ----------------------------------------------------------------------------
 277
 278 BEGIN_DECLARE_EVENT_TYPES()
 279     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_WIZARD_PAGE_CHANGED, 900)
 280     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_WIZARD_PAGE_CHANGING, 901)
 281     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_WIZARD_CANCEL, 902)
 282     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_WIZARD_HELP, 903)
 283     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_WIZARD_FINISHED, 903)
 284 END_DECLARE_EVENT_TYPES()
 285
 286 typedef void (wxEvtHandler::*wxWizardEventFunction)(wxWizardEvent&);
 287
 288 #define wxWizardEventHandler(func) \
 289     (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxWizardEventFunction, &func)
 290
 291 #define wx__DECLARE_WIZARDEVT(evt, id, fn) \
 292     wx__DECLARE_EVT1(wxEVT_WIZARD_ ## evt, id, wxWizardEventHandler(fn))
 293
 294 // notifies that the page has just been changed (can't be vetoed)
 295 #define EVT_WIZARD_PAGE_CHANGED(id, fn) wx__DECLARE_WIZARDEVT(PAGE_CHANGED, id, fn)
 296
 297 // the user pressed "<Back" or "Next>" button and the page is going to be
 298 // changed - unless the event handler vetoes the event
 299 #define EVT_WIZARD_PAGE_CHANGING(id, fn) wx__DECLARE_WIZARDEVT(PAGE_CHANGING, id, fn)
 300
 301 // the user pressed "Cancel" button and the wizard is going to be dismissed -
 302 // unless the event handler vetoes the event
 303 #define EVT_WIZARD_CANCEL(id, fn) wx__DECLARE_WIZARDEVT(CANCEL, id, fn)
 304
 305 // the user pressed "Finish" button and the wizard is going to be dismissed -
 306 #define EVT_WIZARD_FINISHED(id, fn) wx__DECLARE_WIZARDEVT(FINISHED, id, fn)
 307
 308 // the user pressed "Help" button
 309 #define EVT_WIZARD_HELP(id, fn) wx__DECLARE_WIZARDEVT(HELP, id, fn)
 310
 311 #endif // wxUSE_WIZARDDLG
 312
 313 #endif // _WX_WIZARD_H_