wxWidgets/include/wx/msgdlg.h
2009-03-23 13:10:19 +00:00

331 lines
11 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/msgdlgg.h
// Purpose: common header and base class for wxMessageDialog
// Author: Julian Smart
// Modified by:
// Created:
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_MSGDLG_H_BASE_
#define _WX_MSGDLG_H_BASE_
#include "wx/defs.h"
#if wxUSE_MSGDLG
#include "wx/dialog.h"
#include "wx/stockitem.h"
WXDLLIMPEXP_DATA_CORE(extern const char) wxMessageBoxCaptionStr[];
// ----------------------------------------------------------------------------
// wxMessageDialogBase: base class defining wxMessageDialog interface
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxMessageDialogBase : public wxDialog
{
public:
// helper class for SetXXXLabels() methods: it makes it possible to pass
// either a stock id (wxID_CLOSE) or a string ("&Close") to them
class ButtonLabel
{
public:
// ctors are not explicit, objects of this class can be implicitly
// constructed from either stock ids or strings
ButtonLabel(int stockId)
: m_stockId(stockId)
{
wxASSERT_MSG( wxIsStockID(stockId), "invalid stock id" );
}
ButtonLabel(const wxString& label)
: m_label(label), m_stockId(wxID_NONE)
{
}
ButtonLabel(const char *label)
: m_label(label), m_stockId(wxID_NONE)
{
}
ButtonLabel(const wchar_t *label)
: m_label(label), m_stockId(wxID_NONE)
{
}
ButtonLabel(const wxCStrData& label)
: m_label(label), m_stockId(wxID_NONE)
{
}
// default copy ctor and dtor are ok
// get the string label, whether it was originally specified directly
// or as a stock id -- this is only useful for platforms without native
// stock items id support
wxString GetAsString() const
{
return m_stockId == wxID_NONE ? m_label
: wxGetStockLabel(m_stockId);
}
// return the stock id or wxID_NONE if this is not a stock label
int GetStockId() const { return m_stockId; }
private:
// the label if explicitly given or empty if this is a stock item
const wxString m_label;
// the stock item id or wxID_NONE if m_label should be used
const int m_stockId;
};
// ctors
wxMessageDialogBase() { m_dialogStyle = 0; }
wxMessageDialogBase(wxWindow *parent,
const wxString& message,
const wxString& caption,
long style)
: m_message(message),
m_caption(caption)
{
m_parent = parent;
SetMessageDialogStyle(style);
}
// virtual dtor for the base class
virtual ~wxMessageDialogBase() { }
// methods for setting up more custom message dialogs -- all functions
// return false if they're not implemented
virtual bool SetYesNoLabels(const ButtonLabel& WXUNUSED(yes),
const ButtonLabel& WXUNUSED(no))
{
return false;
}
virtual bool SetYesNoCancelLabels(const ButtonLabel& WXUNUSED(yes),
const ButtonLabel& WXUNUSED(no),
const ButtonLabel& WXUNUSED(cancel))
{
return false;
}
virtual bool SetOKLabel(const ButtonLabel& WXUNUSED(ok))
{
return false;
}
virtual bool SetOKCancelLabels(const ButtonLabel& WXUNUSED(ok),
const ButtonLabel& WXUNUSED(cancel))
{
return false;
}
virtual void SetMessage(const wxString& message)
{
m_message = message;
}
virtual void SetExtendedMessage(const wxString& extendedMessage)
{
m_extendedMessage = extendedMessage;
}
// change the dialog style flag
void SetMessageDialogStyle(long style)
{
wxASSERT_MSG( ((style & wxYES_NO) == wxYES_NO) || !(style & wxYES_NO),
"wxYES and wxNO may only be used together" );
wxASSERT_MSG( !(style & wxYES) || !(style & wxOK),
"wxOK and wxYES/wxNO can't be used together" );
wxASSERT_MSG( (style & wxYES) || (style & wxOK),
"one of wxOK and wxYES/wxNO must be used" );
wxASSERT_MSG( (style & wxID_OK) != wxID_OK,
"wxMessageBox: Did you mean wxOK (and not wxID_OK)?" );
wxASSERT_MSG( !(style & wxNO_DEFAULT) || (style & wxNO),
"wxNO_DEFAULT is invalid without wxNO" );
wxASSERT_MSG( !(style & wxCANCEL_DEFAULT) || (style & wxCANCEL),
"wxCANCEL_DEFAULT is invalid without wxCANCEL" );
wxASSERT_MSG( !(style & wxCANCEL_DEFAULT) || !(style & wxNO),
"only one default button can be specified" );
m_dialogStyle = style;
}
protected:
long GetMessageDialogStyle() const { return m_dialogStyle; }
// for the platforms not supporting separate main and extended messages
// this function should be used to combine both of them in a single string
wxString GetFullMessage() const
{
wxString msg = m_message;
if ( !m_extendedMessage.empty() )
msg << "\n\n" << m_extendedMessage;
return msg;
}
wxString m_message,
m_extendedMessage,
m_caption;
long m_dialogStyle;
wxDECLARE_NO_COPY_CLASS(wxMessageDialogBase);
};
// this is a helper class for native wxMessageDialog implementations which need
// to store the custom button labels as member variables and then use them in
// ShowModal() (there could conceivably be a port which would have some native
// functions for setting these labels immediately and we also don't need to
// store them at all if custom labels are not supported, which is why we do
// this in a separate class and not wxMessageDialogBase itself)
#if defined(__WXCOCOA__) || \
defined(__WXGTK20__) || \
defined(__WXMAC__) || \
defined(__WXMSW__)
class WXDLLIMPEXP_CORE wxMessageDialogWithCustomLabels
: public wxMessageDialogBase
{
public:
// ctors
wxMessageDialogWithCustomLabels() { }
wxMessageDialogWithCustomLabels(wxWindow *parent,
const wxString& message,
const wxString& caption,
long style)
: wxMessageDialogBase(parent, message, caption, style)
{
}
// customization of the message box buttons
virtual bool SetYesNoLabels(const ButtonLabel& yes,const ButtonLabel& no)
{
DoSetCustomLabel(m_yes, yes);
DoSetCustomLabel(m_no, no);
return true;
}
virtual bool SetYesNoCancelLabels(const ButtonLabel& yes,
const ButtonLabel& no,
const ButtonLabel& cancel)
{
DoSetCustomLabel(m_yes, yes);
DoSetCustomLabel(m_no, no);
DoSetCustomLabel(m_cancel, cancel);
return true;
}
virtual bool SetOKLabel(const ButtonLabel& ok)
{
DoSetCustomLabel(m_ok, ok);
return true;
}
virtual bool SetOKCancelLabels(const ButtonLabel& ok,
const ButtonLabel& cancel)
{
DoSetCustomLabel(m_ok, ok);
DoSetCustomLabel(m_cancel, cancel);
return true;
}
protected:
// test if any custom labels were set
bool HasCustomLabels() const
{
return !(m_ok.empty() && m_cancel.empty() &&
m_yes.empty() && m_no.empty());
}
// these functions return the label to be used for the button which is
// either a custom label explicitly set by the user or the default label,
// i.e. they always return a valid string
wxString GetYesLabel() const
{ return m_yes.empty() ? GetDefaultYesLabel() : m_yes; }
wxString GetNoLabel() const
{ return m_no.empty() ? GetDefaultNoLabel() : m_no; }
wxString GetOKLabel() const
{ return m_ok.empty() ? GetDefaultOKLabel() : m_ok; }
wxString GetCancelLabel() const
{ return m_cancel.empty() ? GetDefaultCancelLabel() : m_cancel; }
// this function is called by our public SetXXXLabels() and should assign
// the value to var with possibly some transformation (e.g. Cocoa version
// currently uses this to remove any accelerators from the button strings
// while GTK+ one handles stock items specifically here)
virtual void DoSetCustomLabel(wxString& var, const ButtonLabel& label)
{
var = label.GetAsString();
}
private:
// these functions may be overridden to provide different defaults for the
// default button labels (this is used by wxGTK)
virtual wxString GetDefaultYesLabel() const { return _("Yes"); }
virtual wxString GetDefaultNoLabel() const { return _("No"); }
virtual wxString GetDefaultOKLabel() const { return _("OK"); }
virtual wxString GetDefaultCancelLabel() const { return _("Cancel"); }
// labels for the buttons, initially empty meaning that the defaults should
// be used, use GetYes/No/OK/CancelLabel() to access them
wxString m_yes,
m_no,
m_ok,
m_cancel;
wxDECLARE_NO_COPY_CLASS(wxMessageDialogWithCustomLabels);
};
#endif // ports needing wxMessageDialogWithCustomLabels
#if defined(__WX_COMPILING_MSGDLGG_CPP__) || \
defined(__WXUNIVERSAL__) || defined(__WXGPE__) || \
(defined(__WXGTK__) && !defined(__WXGTK20__))
#include "wx/generic/msgdlgg.h"
#define wxMessageDialog wxGenericMessageDialog
#elif defined(__WXCOCOA__)
#include "wx/cocoa/msgdlg.h"
#elif defined(__WXPALMOS__)
#include "wx/palmos/msgdlg.h"
#elif defined(__WXMSW__)
#include "wx/msw/msgdlg.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/msgdlg.h"
#elif defined(__WXGTK20__)
#include "wx/gtk/msgdlg.h"
#elif defined(__WXMAC__)
#include "wx/osx/msgdlg.h"
#elif defined(__WXPM__)
#include "wx/os2/msgdlg.h"
#endif
// ----------------------------------------------------------------------------
// wxMessageBox: the simplest way to use wxMessageDialog
// ----------------------------------------------------------------------------
int WXDLLIMPEXP_CORE wxMessageBox(const wxString& message,
const wxString& caption = wxMessageBoxCaptionStr,
long style = wxOK | wxCENTRE,
wxWindow *parent = NULL,
int x = wxDefaultCoord, int y = wxDefaultCoord);
#endif // wxUSE_MSGDLG
#endif // _WX_MSGDLG_H_BASE_