calling insert("") would provoke an assert - now it's just ignored

[wxWidgets.git] / src / generic / msgdlgg.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        msgdlgg.cpp
// Purpose:     wxGenericMessageDialog
// Author:      Julian Smart
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart and Markus Holzem
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "msgdlgg.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include "wx/utils.h"
#include "wx/dialog.h"
#include "wx/listbox.h"
#include "wx/button.h"
#include "wx/stattext.h"
#include "wx/layout.h"
#include "wx/intl.h"
#endif

#include <stdio.h>
#include <string.h>

#include "wx/generic/msgdlgg.h"

///////////////////////////////////////////////////////////////////
// New dialog box implementations

// Split message, using constraints to position controls
void wxSplitMessage2(const char *message, wxList *messageList, wxWindow *parent, wxRowColSizer *sizer)
{
  char *copyMessage = copystring(message);
  size_t i = 0;
  size_t len = strlen(copyMessage);
  char *currentMessage = copyMessage;

//  wxWindow *lastWindow = parent;

  while (i < len) {
    while ((i < len) && (copyMessage[i] != '\n')) i++;
    if (i < len) copyMessage[i] = 0;
    wxStaticText *mess = new wxStaticText(parent, -1, currentMessage);

/*
  	wxLayoutConstraints *c = new wxLayoutConstraints;
  	c->left.SameAs       	(parent, wxLeft, 10);
  	c->top.SameAs        	(lastWindow, wxBottom, 5);
  	c->right.AsIs      		();
  	c->height.AsIs			();

  	mess->SetConstraints(c);
*/
	sizer->AddSizerChild(mess);

    messageList->Append(mess);

    currentMessage = copyMessage + i + 1;
  }
  delete[] copyMessage;
}

#if !USE_SHARED_LIBRARY
BEGIN_EVENT_TABLE(wxGenericMessageDialog, wxDialog)
	EVT_BUTTON(wxID_YES, wxGenericMessageDialog::OnYes)
	EVT_BUTTON(wxID_NO, wxGenericMessageDialog::OnNo)
	EVT_BUTTON(wxID_CANCEL, wxGenericMessageDialog::OnCancel)
END_EVENT_TABLE()

IMPLEMENT_CLASS(wxGenericMessageDialog, wxDialog)
#endif

wxGenericMessageDialog::wxGenericMessageDialog(wxWindow *parent, const wxString& message, const wxString& caption,
        long style, const wxPoint& pos):
	wxDialog(parent, -1, caption, pos, wxDefaultSize, wxDEFAULT_DIALOG_STYLE|wxDIALOG_MODAL)
{
	m_dialogStyle = style;

	wxBeginBusyCursor();

	wxSizer *topSizer = new wxSizer(this, wxSizerShrink);
	topSizer->SetBorder(10, 10);

	wxRowColSizer *messageSizer = new wxRowColSizer(topSizer, wxSIZER_COLS, 100);
	messageSizer->SetName("messageSizer");

//    bool centre = ((style & wxCENTRE) == wxCENTRE);

	wxList messageList;
	wxSplitMessage2(message, &messageList, this, messageSizer);

	// Insert a spacer
	wxSpacingSizer *spacingSizer = new wxSpacingSizer(topSizer, wxBelow, messageSizer, 20);

	wxRowColSizer *buttonSizer = new wxRowColSizer(topSizer, wxSIZER_ROWS);
	buttonSizer->SetName("buttonSizer");

  	// Specify constraints for the button sizer
  	wxLayoutConstraints *c = new wxLayoutConstraints;
  	c->width.AsIs		();
  	c->height.AsIs		();
	c->top.Below		(spacingSizer);
	c->centreX.SameAs	(spacingSizer, wxCentreX);
  	buttonSizer->SetConstraints(c);

    wxButton *ok = NULL;
  	wxButton *cancel = NULL;
  	wxButton *yes = NULL;
  	wxButton *no = NULL;

  	if (style & wxYES_NO) {
    yes = new wxButton(this, wxID_YES, _("Yes"));
    no = new wxButton(this, wxID_NO, _("No"));

	buttonSizer->AddSizerChild(yes);
	buttonSizer->AddSizerChild(no);
  }

  if (style & wxOK) {
    ok = new wxButton(this, wxID_OK, _("OK"));
	buttonSizer->AddSizerChild(ok);
  }

  if (style & wxCANCEL) {
    cancel = new wxButton(this, wxID_CANCEL, _("Cancel"));
	buttonSizer->AddSizerChild(cancel);
  }

  if (ok)
  {
    ok->SetDefault();
    ok->SetFocus();
  }
  else if (yes)
  {
    yes->SetDefault();
    yes->SetFocus();
  }

	Layout();
    Centre(wxBOTH);

	wxEndBusyCursor();
}

void wxGenericMessageDialog::OnYes(wxCommandEvent& WXUNUSED(event))
{
	EndModal(wxID_YES);
}

void wxGenericMessageDialog::OnNo(wxCommandEvent& WXUNUSED(event))
{
	EndModal(wxID_NO);
}

void wxGenericMessageDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
{
	// Allow cancellation via ESC/Close button except if
	// only YES and NO are specified.
	if ( (m_dialogStyle & wxYES_NO) != wxYES_NO || (m_dialogStyle & wxCANCEL) )
		EndModal(wxID_CANCEL);
}


int wxMessageBox(const wxString& message, const wxString& caption, long style,
                 wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
{
	wxMessageDialog dialog(parent, message, caption, style);

	int ans = dialog.ShowModal();
	switch ( ans )
	{
		case wxID_OK:
			return wxOK;
			break;
		case wxID_YES:
			return wxYES;
			break;
		case wxID_NO:
			return wxNO;
			break;
		default:
		case wxID_CANCEL:
			return wxCANCEL;
			break;
	}

	return ans;
}