include/wx/msgdlg.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msgdlg.h
   3 // Purpose:     common header and base class for wxMessageDialog
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_MSGDLG_H_BASE_
  13 #define _WX_MSGDLG_H_BASE_
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_MSGDLG
  18
  19 #include "wx/dialog.h"
  20 #include "wx/stockitem.h"
  21
  22 extern WXDLLIMPEXP_DATA_CORE(const char) wxMessageBoxCaptionStr[];
  23
  24 // ----------------------------------------------------------------------------
  25 // wxMessageDialogBase: base class defining wxMessageDialog interface
  26 // ----------------------------------------------------------------------------
  27
  28 class WXDLLIMPEXP_CORE wxMessageDialogBase : public wxDialog
  29 {
  30 public:
  31     // helper class for SetXXXLabels() methods: it makes it possible to pass
  32     // either a stock id (wxID_CLOSE) or a string ("&Close") to them
  33     class ButtonLabel
  34     {
  35     public:
  36         // ctors are not explicit, objects of this class can be implicitly
  37         // constructed from either stock ids or strings
  38         ButtonLabel(int stockId)
  39             : m_stockId(stockId)
  40         {
  41             wxASSERT_MSG( wxIsStockID(stockId), "invalid stock id" );
  42         }
  43
  44         ButtonLabel(const wxString& label)
  45             : m_label(label), m_stockId(wxID_NONE)
  46         {
  47         }
  48
  49         ButtonLabel(const char *label)
  50             : m_label(label), m_stockId(wxID_NONE)
  51         {
  52         }
  53
  54         ButtonLabel(const wchar_t *label)
  55             : m_label(label), m_stockId(wxID_NONE)
  56         {
  57         }
  58
  59         ButtonLabel(const wxCStrData& label)
  60             : m_label(label), m_stockId(wxID_NONE)
  61         {
  62         }
  63
  64         // default copy ctor and dtor are ok
  65
  66         // get the string label, whether it was originally specified directly
  67         // or as a stock id -- this is only useful for platforms without native
  68         // stock items id support
  69         wxString GetAsString() const
  70         {
  71             return m_stockId == wxID_NONE
  72                     ? m_label
  73                     : wxGetStockLabel(m_stockId, wxSTOCK_FOR_BUTTON);
  74         }
  75
  76         // return the stock id or wxID_NONE if this is not a stock label
  77         int GetStockId() const { return m_stockId; }
  78
  79     private:
  80         // the label if explicitly given or empty if this is a stock item
  81         const wxString m_label;
  82
  83         // the stock item id or wxID_NONE if m_label should be used
  84         const int m_stockId;
  85     };
  86
  87     // ctors
  88     wxMessageDialogBase() { m_dialogStyle = 0; }
  89     wxMessageDialogBase(wxWindow *parent,
  90                         const wxString& message,
  91                         const wxString& caption,
  92                         long style)
  93         : m_message(message),
  94           m_caption(caption)
  95     {
  96         m_parent = parent;
  97         SetMessageDialogStyle(style);
  98     }
  99
 100     // virtual dtor for the base class
 101     virtual ~wxMessageDialogBase() { }
 102
 103     wxString GetCaption() const { return m_caption; }
 104
 105     virtual void SetMessage(const wxString& message)
 106     {
 107         m_message = message;
 108     }
 109
 110     wxString GetMessage() const { return m_message; }
 111
 112     void SetExtendedMessage(const wxString& extendedMessage)
 113     {
 114         m_extendedMessage = extendedMessage;
 115     }
 116
 117     wxString GetExtendedMessage() const { return m_extendedMessage; }
 118
 119     // change the dialog style flag
 120     void SetMessageDialogStyle(long style)
 121     {
 122         wxASSERT_MSG( ((style & wxYES_NO) == wxYES_NO) || !(style & wxYES_NO),
 123                       "wxYES and wxNO may only be used together" );
 124
 125         wxASSERT_MSG( !(style & wxYES) || !(style & wxOK),
 126                       "wxOK and wxYES/wxNO can't be used together" );
 127
 128         wxASSERT_MSG( (style & wxYES) || (style & wxOK),
 129                       "one of wxOK and wxYES/wxNO must be used" );
 130
 131         wxASSERT_MSG( (style & wxID_OK) != wxID_OK,
 132                       "wxMessageBox: Did you mean wxOK (and not wxID_OK)?" );
 133
 134         wxASSERT_MSG( !(style & wxNO_DEFAULT) || (style & wxNO),
 135                       "wxNO_DEFAULT is invalid without wxNO" );
 136
 137         wxASSERT_MSG( !(style & wxCANCEL_DEFAULT) || (style & wxCANCEL),
 138                       "wxCANCEL_DEFAULT is invalid without wxCANCEL" );
 139
 140         wxASSERT_MSG( !(style & wxCANCEL_DEFAULT) || !(style & wxNO_DEFAULT),
 141                       "only one default button can be specified" );
 142
 143         m_dialogStyle = style;
 144     }
 145
 146     long GetMessageDialogStyle() const { return m_dialogStyle; }
 147
 148     // customization of the message box buttons
 149     virtual bool SetYesNoLabels(const ButtonLabel& yes,const ButtonLabel& no)
 150     {
 151         DoSetCustomLabel(m_yes, yes);
 152         DoSetCustomLabel(m_no, no);
 153         return true;
 154     }
 155
 156     virtual bool SetYesNoCancelLabels(const ButtonLabel& yes,
 157                                       const ButtonLabel& no,
 158                                       const ButtonLabel& cancel)
 159     {
 160         DoSetCustomLabel(m_yes, yes);
 161         DoSetCustomLabel(m_no, no);
 162         DoSetCustomLabel(m_cancel, cancel);
 163         return true;
 164     }
 165
 166     virtual bool SetOKLabel(const ButtonLabel& ok)
 167     {
 168         DoSetCustomLabel(m_ok, ok);
 169         return true;
 170     }
 171
 172     virtual bool SetOKCancelLabels(const ButtonLabel& ok,
 173                                    const ButtonLabel& cancel)
 174     {
 175         DoSetCustomLabel(m_ok, ok);
 176         DoSetCustomLabel(m_cancel, cancel);
 177         return true;
 178     }
 179
 180     virtual bool SetHelpLabel(const ButtonLabel& help)
 181     {
 182         DoSetCustomLabel(m_help, help);
 183         return true;
 184     }
 185
 186     // test if any custom labels were set
 187     bool HasCustomLabels() const
 188     {
 189         return !(m_ok.empty() && m_cancel.empty() && m_help.empty() &&
 190                  m_yes.empty() && m_no.empty());
 191     }
 192
 193     // these functions return the label to be used for the button which is
 194     // either a custom label explicitly set by the user or the default label,
 195     // i.e. they always return a valid string
 196     wxString GetYesLabel() const
 197         { return m_yes.empty() ? GetDefaultYesLabel() : m_yes; }
 198     wxString GetNoLabel() const
 199         { return m_no.empty() ? GetDefaultNoLabel() : m_no; }
 200     wxString GetOKLabel() const
 201         { return m_ok.empty() ? GetDefaultOKLabel() : m_ok; }
 202     wxString GetCancelLabel() const
 203         { return m_cancel.empty() ? GetDefaultCancelLabel() : m_cancel; }
 204     wxString GetHelpLabel() const
 205         { return m_help.empty() ? GetDefaultHelpLabel() : m_help; }
 206
 207     // based on message dialog style, returns exactly one of: wxICON_NONE,
 208     // wxICON_ERROR, wxICON_WARNING, wxICON_QUESTION, wxICON_INFORMATION
 209     long GetEffectiveIcon() const
 210     {
 211         if ( m_dialogStyle & wxICON_NONE )
 212             return wxICON_NONE;
 213         else if ( m_dialogStyle & wxICON_ERROR )
 214             return wxICON_ERROR;
 215         else if ( m_dialogStyle & wxICON_WARNING )
 216             return wxICON_WARNING;
 217         else if ( m_dialogStyle & wxICON_QUESTION )
 218             return wxICON_QUESTION;
 219         else if ( m_dialogStyle & wxICON_INFORMATION )
 220             return wxICON_INFORMATION;
 221         else if ( m_dialogStyle & wxYES )
 222             return wxICON_QUESTION;
 223         else
 224             return wxICON_INFORMATION;
 225     }
 226
 227 protected:
 228     // for the platforms not supporting separate main and extended messages
 229     // this function should be used to combine both of them in a single string
 230     wxString GetFullMessage() const
 231     {
 232         wxString msg = m_message;
 233         if ( !m_extendedMessage.empty() )
 234             msg << "\n\n" << m_extendedMessage;
 235
 236         return msg;
 237     }
 238
 239     wxString m_message,
 240              m_extendedMessage,
 241              m_caption;
 242     long m_dialogStyle;
 243
 244     // this function is called by our public SetXXXLabels() and should assign
 245     // the value to var with possibly some transformation (e.g. Cocoa version
 246     // currently uses this to remove any accelerators from the button strings
 247     // while GTK+ one handles stock items specifically here)
 248     virtual void DoSetCustomLabel(wxString& var, const ButtonLabel& label)
 249     {
 250         var = label.GetAsString();
 251     }
 252
 253     // these functions return the custom label or empty string and should be
 254     // used only in specific circumstances such as creating the buttons with
 255     // these labels (in which case it makes sense to only use a custom label if
 256     // it was really given and fall back on stock label otherwise), use the
 257     // Get{Yes,No,OK,Cancel}Label() methods above otherwise
 258     const wxString& GetCustomYesLabel() const { return m_yes; }
 259     const wxString& GetCustomNoLabel() const { return m_no; }
 260     const wxString& GetCustomOKLabel() const { return m_ok; }
 261     const wxString& GetCustomHelpLabel() const { return m_help; }
 262     const wxString& GetCustomCancelLabel() const { return m_cancel; }
 263
 264 private:
 265     // these functions may be overridden to provide different defaults for the
 266     // default button labels (this is used by wxGTK)
 267     virtual wxString GetDefaultYesLabel() const { return wxGetTranslation("Yes"); }
 268     virtual wxString GetDefaultNoLabel() const { return wxGetTranslation("No"); }
 269     virtual wxString GetDefaultOKLabel() const { return wxGetTranslation("OK"); }
 270     virtual wxString GetDefaultCancelLabel() const { return wxGetTranslation("Cancel"); }
 271     virtual wxString GetDefaultHelpLabel() const { return wxGetTranslation("Help"); }
 272
 273     // labels for the buttons, initially empty meaning that the defaults should
 274     // be used, use GetYes/No/OK/CancelLabel() to access them
 275     wxString m_yes,
 276              m_no,
 277              m_ok,
 278              m_cancel,
 279              m_help;
 280
 281     wxDECLARE_NO_COPY_CLASS(wxMessageDialogBase);
 282 };
 283
 284 #include "wx/generic/msgdlgg.h"
 285
 286 #if defined(__WX_COMPILING_MSGDLGG_CPP__) || \
 287     defined(__WXUNIVERSAL__) || defined(__WXGPE__) || \
 288     (defined(__WXGTK__) && !defined(__WXGTK20__))
 289
 290     #define wxMessageDialog wxGenericMessageDialog
 291 #elif defined(__WXCOCOA__)
 292     #include "wx/cocoa/msgdlg.h"
 293 #elif defined(__WXMSW__)
 294     #include "wx/msw/msgdlg.h"
 295 #elif defined(__WXMOTIF__)
 296     #include "wx/motif/msgdlg.h"
 297 #elif defined(__WXGTK20__)
 298     #include "wx/gtk/msgdlg.h"
 299 #elif defined(__WXMAC__)
 300     #include "wx/osx/msgdlg.h"
 301 #elif defined(__WXPM__)
 302     #include "wx/os2/msgdlg.h"
 303 #endif
 304
 305 // ----------------------------------------------------------------------------
 306 // wxMessageBox: the simplest way to use wxMessageDialog
 307 // ----------------------------------------------------------------------------
 308
 309 int WXDLLIMPEXP_CORE wxMessageBox(const wxString& message,
 310                              const wxString& caption = wxMessageBoxCaptionStr,
 311                              long style = wxOK | wxCENTRE,
 312                              wxWindow *parent = NULL,
 313                              int x = wxDefaultCoord, int y = wxDefaultCoord);
 314
 315 #endif // wxUSE_MSGDLG
 316
 317 #endif // _WX_MSGDLG_H_BASE_