include/wx/dialog.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/dialog.h
   3 // Purpose:     wxDialogBase class
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     29.06.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DIALOG_H_BASE_
  13 #define _WX_DIALOG_H_BASE_
  14
  15 #include "wx/defs.h"
  16 #include "wx/toplevel.h"
  17
  18 class WXDLLIMPEXP_FWD_CORE wxSizer;
  19 class WXDLLIMPEXP_FWD_CORE wxStdDialogButtonSizer;
  20 class WXDLLIMPEXP_FWD_CORE wxBoxSizer;
  21 class WXDLLIMPEXP_FWD_CORE wxDialogLayoutAdapter;
  22 class WXDLLIMPEXP_FWD_CORE wxDialog;
  23 class WXDLLIMPEXP_FWD_CORE wxButton;
  24 class WXDLLIMPEXP_FWD_CORE wxScrolledWindow;
  25
  26 #define wxDIALOG_NO_PARENT      0x0001  // Don't make owned by apps top window
  27
  28 #ifdef __WXWINCE__
  29 #define wxDEFAULT_DIALOG_STYLE  (wxCAPTION | wxMAXIMIZE | wxCLOSE_BOX | wxNO_BORDER)
  30 #else
  31 #define wxDEFAULT_DIALOG_STYLE  (wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX)
  32 #endif
  33
  34 // Layout adaptation levels, for SetLayoutAdaptationLevel
  35
  36 // Don't do any layout adaptation
  37 #define wxDIALOG_ADAPTATION_NONE             0
  38
  39 // Only look for wxStdDialogButtonSizer for non-scrolling part
  40 #define wxDIALOG_ADAPTATION_STANDARD_SIZER   1
  41
  42 // Also look for any suitable sizer for non-scrolling part
  43 #define wxDIALOG_ADAPTATION_ANY_SIZER        2
  44
  45 // Also look for 'loose' standard buttons for non-scrolling part
  46 #define wxDIALOG_ADAPTATION_LOOSE_BUTTONS    3
  47
  48 // Layout adaptation mode, for SetLayoutAdaptationMode
  49 enum wxDialogLayoutAdaptationMode
  50 {
  51     wxDIALOG_ADAPTATION_MODE_DEFAULT = 0,   // use global adaptation enabled status
  52     wxDIALOG_ADAPTATION_MODE_ENABLED = 1,   // enable this dialog overriding global status
  53     wxDIALOG_ADAPTATION_MODE_DISABLED = 2   // disable this dialog overriding global status
  54 };
  55
  56 enum wxDialogModality
  57 {
  58     wxDIALOG_MODALITY_NONE = 0,
  59     wxDIALOG_MODALITY_WINDOW_MODAL = 1,
  60     wxDIALOG_MODALITY_APP_MODAL = 2
  61 };
  62
  63 extern WXDLLIMPEXP_DATA_CORE(const char) wxDialogNameStr[];
  64
  65 class WXDLLIMPEXP_CORE wxDialogBase : public wxTopLevelWindow
  66 {
  67 public:
  68     wxDialogBase() { Init(); }
  69     virtual ~wxDialogBase() { }
  70
  71     // define public wxDialog methods to be implemented by the derived classes
  72     virtual int ShowModal() = 0;
  73     virtual void EndModal(int retCode) = 0;
  74     virtual bool IsModal() const = 0;
  75     // show the dialog frame-modally (needs a parent), using app-modal
  76     // dialogs on platforms that don't support it
  77     virtual void ShowWindowModal () ;
  78     virtual void SendWindowModalDialogEvent ( wxEventType type );
  79
  80     // Modal dialogs have a return code - usually the id of the last
  81     // pressed button
  82     void SetReturnCode(int returnCode) { m_returnCode = returnCode; }
  83     int GetReturnCode() const { return m_returnCode; }
  84
  85     // Set the identifier for the affirmative button: this button will close
  86     // the dialog after validating data and calling TransferDataFromWindow()
  87     void SetAffirmativeId(int affirmativeId);
  88     int GetAffirmativeId() const { return m_affirmativeId; }
  89
  90     // Set identifier for Esc key translation: the button with this id will
  91     // close the dialog without doing anything else; special value wxID_NONE
  92     // means to not handle Esc at all while wxID_ANY means to map Esc to
  93     // wxID_CANCEL if present and GetAffirmativeId() otherwise
  94     void SetEscapeId(int escapeId);
  95     int GetEscapeId() const { return m_escapeId; }
  96
  97     // Find the parent to use for modal dialog: try to use the specified parent
  98     // but fall back to the current active window or main application window as
  99     // last resort if it is unsuitable.
 100     //
 101     // As this function is often called from the ctor, the window style may be
 102     // not set yet and hence must be passed explicitly to it so that we could
 103     // check whether it contains wxDIALOG_NO_PARENT bit.
 104     //
 105     // This function always returns a valid top level window or NULL.
 106     wxWindow *GetParentForModalDialog(wxWindow *parent, long style) const;
 107
 108     // This overload can only be used for already initialized windows, i.e. not
 109     // from the ctor. It uses the current window parent and style.
 110     wxWindow *GetParentForModalDialog() const
 111     {
 112         return GetParentForModalDialog(GetParent(), GetWindowStyle());
 113     }
 114
 115 #if wxUSE_STATTEXT // && wxUSE_TEXTCTRL
 116     // splits text up at newlines and places the
 117     // lines into a vertical wxBoxSizer
 118     wxSizer *CreateTextSizer( const wxString &message );
 119 #endif // wxUSE_STATTEXT // && wxUSE_TEXTCTRL
 120
 121     // returns a horizontal wxBoxSizer containing the given buttons
 122     //
 123     // notice that the returned sizer can be NULL if no buttons are put in the
 124     // sizer (this mostly happens under smart phones and other atypical
 125     // platforms which have hardware buttons replacing OK/Cancel and such)
 126     wxSizer *CreateButtonSizer(long flags);
 127
 128     // returns the sizer containing CreateButtonSizer() below a separating
 129     // static line for the platforms which use static lines for items
 130     // separation (i.e. not Mac)
 131     wxSizer *CreateSeparatedButtonSizer(long flags);
 132
 133 #if wxUSE_BUTTON
 134     wxStdDialogButtonSizer *CreateStdDialogButtonSizer( long flags );
 135 #endif // wxUSE_BUTTON
 136
 137     // Do layout adaptation
 138     virtual bool DoLayoutAdaptation();
 139
 140     // Can we do layout adaptation?
 141     virtual bool CanDoLayoutAdaptation();
 142
 143     // Returns a content window if there is one. This can be used by the layout adapter, for
 144     // example to make the pages of a book control into scrolling windows
 145     virtual wxWindow* GetContentWindow() const { return NULL; }
 146
 147     // Add an id to the list of main button identifiers that should be in the button sizer
 148     void AddMainButtonId(wxWindowID id) { m_mainButtonIds.Add((int) id); }
 149     wxArrayInt& GetMainButtonIds() { return m_mainButtonIds; }
 150
 151     // Is this id in the main button id array?
 152     bool IsMainButtonId(wxWindowID id) const { return (m_mainButtonIds.Index((int) id) != wxNOT_FOUND); }
 153
 154     // Level of adaptation, from none (Level 0) to full (Level 3). To disable adaptation,
 155     // set level 0, for example in your dialog constructor. You might
 156     // do this if you know that you are displaying on a large screen and you don't want the
 157     // dialog changed.
 158     void SetLayoutAdaptationLevel(int level) { m_layoutAdaptationLevel = level; }
 159     int GetLayoutAdaptationLevel() const { return m_layoutAdaptationLevel; }
 160
 161     /// Override global adaptation enabled/disabled status
 162     void SetLayoutAdaptationMode(wxDialogLayoutAdaptationMode mode) { m_layoutAdaptationMode = mode; }
 163     wxDialogLayoutAdaptationMode GetLayoutAdaptationMode() const { return m_layoutAdaptationMode; }
 164
 165     // Returns true if the adaptation has been done
 166     void SetLayoutAdaptationDone(bool adaptationDone) { m_layoutAdaptationDone = adaptationDone; }
 167     bool GetLayoutAdaptationDone() const { return m_layoutAdaptationDone; }
 168
 169     // Set layout adapter class, returning old adapter
 170     static wxDialogLayoutAdapter* SetLayoutAdapter(wxDialogLayoutAdapter* adapter);
 171     static wxDialogLayoutAdapter* GetLayoutAdapter() { return sm_layoutAdapter; }
 172
 173     // Global switch for layout adaptation
 174     static bool IsLayoutAdaptationEnabled() { return sm_layoutAdaptation; }
 175     static void EnableLayoutAdaptation(bool enable) { sm_layoutAdaptation = enable; }
 176
 177     // modality kind
 178     virtual wxDialogModality GetModality() const;
 179 protected:
 180     // emulate click of a button with the given id if it's present in the dialog
 181     //
 182     // return true if button was "clicked" or false if we don't have it
 183     bool EmulateButtonClickIfPresent(int id);
 184
 185     // this function is used by OnCharHook() to decide whether the given key
 186     // should close the dialog
 187     //
 188     // for most platforms the default implementation (which just checks for
 189     // Esc) is sufficient, but Mac port also adds Cmd-. here and other ports
 190     // could do something different if needed
 191     virtual bool IsEscapeKey(const wxKeyEvent& event);
 192
 193     // end either modal or modeless dialog, for the modal dialog rc is used as
 194     // the dialog return code
 195     void EndDialog(int rc);
 196
 197     // call Validate() and TransferDataFromWindow() and close dialog with
 198     // wxID_OK return code
 199     void AcceptAndClose();
 200
 201     // The return code from modal dialog
 202     int m_returnCode;
 203
 204     // The identifier for the affirmative button (usually wxID_OK)
 205     int m_affirmativeId;
 206
 207     // The identifier for cancel button (usually wxID_CANCEL)
 208     int m_escapeId;
 209
 210     // Flags whether layout adaptation has been done for this dialog
 211     bool                                m_layoutAdaptationDone;
 212
 213     // Extra button identifiers to be taken as 'main' button identifiers
 214     // to be placed in the non-scrolling area
 215     wxArrayInt                          m_mainButtonIds;
 216
 217     // Adaptation level
 218     int                                 m_layoutAdaptationLevel;
 219
 220     // Local override for global adaptation enabled status
 221     wxDialogLayoutAdaptationMode        m_layoutAdaptationMode;
 222
 223     // Global layout adapter
 224     static wxDialogLayoutAdapter*       sm_layoutAdapter;
 225
 226     // Global adaptation switch
 227     static bool                         sm_layoutAdaptation;
 228
 229 private:
 230     // common part of all ctors
 231     void Init();
 232
 233     // helper of GetParentForModalDialog(): returns the passed in window if it
 234     // can be used as our parent or NULL if it can't
 235     wxWindow *CheckIfCanBeUsedAsParent(wxWindow *parent) const;
 236
 237     // handle Esc key presses
 238     void OnCharHook(wxKeyEvent& event);
 239
 240     // handle closing the dialog window
 241     void OnCloseWindow(wxCloseEvent& event);
 242
 243     // handle the standard buttons
 244     void OnButton(wxCommandEvent& event);
 245
 246     // update the background colour
 247     void OnSysColourChanged(wxSysColourChangedEvent& event);
 248
 249
 250     wxDECLARE_NO_COPY_CLASS(wxDialogBase);
 251     DECLARE_EVENT_TABLE()
 252 };
 253
 254 /*!
 255  * Base class for layout adapters - code that, for example, turns a dialog into a
 256  * scrolling dialog if there isn't enough screen space. You can derive further
 257  * adapter classes to do any other kind of adaptation, such as applying a watermark, or adding
 258  * a help mechanism.
 259  */
 260
 261 class WXDLLIMPEXP_CORE wxDialogLayoutAdapter: public wxObject
 262 {
 263     DECLARE_CLASS(wxDialogLayoutAdapter)
 264 public:
 265     wxDialogLayoutAdapter() {}
 266
 267     // Override this function to indicate that adaptation should be done
 268     virtual bool CanDoLayoutAdaptation(wxDialog* dialog) = 0;
 269
 270     // Override this function to do the adaptation
 271     virtual bool DoLayoutAdaptation(wxDialog* dialog) = 0;
 272 };
 273
 274 /*!
 275  * Standard adapter. Does scrolling adaptation for paged and regular dialogs.
 276  *
 277  */
 278
 279 class WXDLLIMPEXP_CORE wxStandardDialogLayoutAdapter: public wxDialogLayoutAdapter
 280 {
 281     DECLARE_CLASS(wxStandardDialogLayoutAdapter)
 282 public:
 283     wxStandardDialogLayoutAdapter() {}
 284
 285 // Overrides
 286
 287     // Indicate that adaptation should be done
 288     virtual bool CanDoLayoutAdaptation(wxDialog* dialog);
 289
 290     // Do layout adaptation
 291     virtual bool DoLayoutAdaptation(wxDialog* dialog);
 292
 293 // Implementation
 294
 295     // Create the scrolled window
 296     virtual wxScrolledWindow* CreateScrolledWindow(wxWindow* parent);
 297
 298     // Find a standard or horizontal box sizer
 299     virtual wxSizer* FindButtonSizer(bool stdButtonSizer, wxDialog* dialog, wxSizer* sizer, int& retBorder, int accumlatedBorder = 0);
 300
 301     // Check if this sizer contains standard buttons, and so can be repositioned in the dialog
 302     virtual bool IsOrdinaryButtonSizer(wxDialog* dialog, wxBoxSizer* sizer);
 303
 304     // Check if this is a standard button
 305     virtual bool IsStandardButton(wxDialog* dialog, wxButton* button);
 306
 307     // Find 'loose' main buttons in the existing layout and add them to the standard dialog sizer
 308     virtual bool FindLooseButtons(wxDialog* dialog, wxStdDialogButtonSizer* buttonSizer, wxSizer* sizer, int& count);
 309
 310     // Reparent the controls to the scrolled window, except those in buttonSizer
 311     virtual void ReparentControls(wxWindow* parent, wxWindow* reparentTo, wxSizer* buttonSizer = NULL);
 312     static void DoReparentControls(wxWindow* parent, wxWindow* reparentTo, wxSizer* buttonSizer = NULL);
 313
 314     // A function to fit the dialog around its contents, and then adjust for screen size.
 315     // If scrolled windows are passed, scrolling is enabled in the required orientation(s).
 316     virtual bool FitWithScrolling(wxDialog* dialog, wxScrolledWindow* scrolledWindow);
 317     virtual bool FitWithScrolling(wxDialog* dialog, wxWindowList& windows);
 318     static bool DoFitWithScrolling(wxDialog* dialog, wxScrolledWindow* scrolledWindow);
 319     static bool DoFitWithScrolling(wxDialog* dialog, wxWindowList& windows);
 320
 321     // Find whether scrolling will be necessary for the dialog, returning wxVERTICAL, wxHORIZONTAL or both
 322     virtual int MustScroll(wxDialog* dialog, wxSize& windowSize, wxSize& displaySize);
 323     static int DoMustScroll(wxDialog* dialog, wxSize& windowSize, wxSize& displaySize);
 324 };
 325
 326 #if defined(__WXUNIVERSAL__) && !defined(__WXMICROWIN__)
 327     #include "wx/univ/dialog.h"
 328 #else
 329     #if defined(__WXPALMOS__)
 330         #include "wx/palmos/dialog.h"
 331     #elif defined(__WXMSW__)
 332         #include "wx/msw/dialog.h"
 333     #elif defined(__WXMOTIF__)
 334         #include "wx/motif/dialog.h"
 335     #elif defined(__WXGTK20__)
 336         #include "wx/gtk/dialog.h"
 337     #elif defined(__WXGTK__)
 338         #include "wx/gtk1/dialog.h"
 339     #elif defined(__WXMAC__)
 340         #include "wx/osx/dialog.h"
 341     #elif defined(__WXCOCOA__)
 342         #include "wx/cocoa/dialog.h"
 343     #elif defined(__WXPM__)
 344         #include "wx/os2/dialog.h"
 345     #endif
 346 #endif
 347
 348 class WXDLLIMPEXP_CORE wxWindowModalDialogEvent  : public wxCommandEvent
 349 {
 350 public:
 351     wxWindowModalDialogEvent (wxEventType commandType = wxEVT_NULL, int id = 0)
 352         : wxCommandEvent(commandType, id) { }
 353
 354     wxDialog *GetDialog() const
 355         { return wxStaticCast(GetEventObject(), wxDialog); }
 356
 357     int GetReturnCode() const
 358         { return GetDialog()->GetReturnCode(); }
 359
 360     virtual wxEvent *Clone() const { return new wxWindowModalDialogEvent (*this); }
 361
 362 private:
 363     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxWindowModalDialogEvent )
 364 };
 365
 366 wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_WINDOW_MODAL_DIALOG_CLOSED , wxWindowModalDialogEvent );
 367
 368 typedef void (wxEvtHandler::*wxWindowModalDialogEventFunction)(wxWindowModalDialogEvent &);
 369
 370 #define wxWindowModalDialogEventHandler(func) \
 371     wxEVENT_HANDLER_CAST(wxWindowModalDialogEventFunction, func)
 372
 373 #endif
 374     // _WX_DIALOG_H_BASE_