/////////////////////////////////////////////////////////////////////////////
// Name:        dialog.cpp
// Purpose:     wxDialog class
// Author:      AUTHOR
// Modified by:
// Created:     ??/??/98
// RCS-ID:      $Id$
// Copyright:   (c) AUTHOR
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

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

#include "wx/dialog.h"
#include "wx/utils.h"
#include "wx/frame.h"
#include "wx/app.h"
#include "wx/settings.h"

#include <wx/mac/uma.h>

// Lists to keep track of windows, so we can disable/enable them
// for modal dialogs
wxList wxModalDialogs;
wxList wxModelessWindows;  // Frames and modeless dialogs
extern wxList wxPendingDelete;

IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxPanel)

BEGIN_EVENT_TABLE(wxDialog, wxPanel)
	EVT_SIZE(wxDialog::OnSize)
  EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  EVT_CHAR_HOOK(wxDialog::OnCharHook)
  EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
  EVT_CLOSE(wxDialog::OnCloseWindow)
END_EVENT_TABLE()


wxDialog::wxDialog()
{
  m_isShown = FALSE;
  m_modalShowing = FALSE;
    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
}

bool wxDialog::Create(wxWindow *parent, wxWindowID id,
           const wxString& title,
           const wxPoint& pos,
           const wxSize& size,
           long style,
           const wxString& name)
{
  m_windowStyle = style;
  m_isShown = FALSE;
  m_modalShowing = FALSE;

#if wxUSE_TOOLTIPS
    m_hwndToolTip = 0;
#endif
  SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  SetName(name);
  
  if (!parent)
    wxTopLevelWindows.Append(this);

  if (parent) parent->AddChild(this);

  if ( id == -1 )
  	m_windowId = (int)NewControlId();
  else
	m_windowId = id;

	Rect theBoundsRect;

  m_x = (int)pos.x;
  m_y = (int)pos.y;
  if ( m_y < 50 )
  	m_y = 50 ;
  if ( m_x < 20 )
  	m_x = 20 ;
  	
  m_width = size.x;
	if (m_width == -1) 
		m_width = 20;
  m_height = size.y;
	if (m_height == -1) 
		m_height = 20;

	::SetRect(&theBoundsRect, m_x, m_y, m_x + m_width, m_y + m_height);
	m_macWindowData = new MacWindowData() ;

	WindowClass wclass = kMovableModalWindowClass ;
	WindowAttributes attr = kWindowNoAttributes ;
	
	if ( ( m_windowStyle & wxMINIMIZE_BOX ) || ( m_windowStyle & wxMAXIMIZE_BOX ) )
	{
		attr |= kWindowFullZoomAttribute ;
		attr |= kWindowResizableAttribute ;
	}

	UMACreateNewWindow( wclass , attr , &theBoundsRect , &m_macWindowData->m_macWindow ) ;
	wxAssociateWinWithMacWindow( m_macWindowData->m_macWindow , this ) ;
	wxString label ;
	if( wxApp::s_macDefaultEncodingIsPC )
		label = wxMacMakeMacStringFromPC( title ) ;
	else
		label = title ;
	UMASetWTitleC( m_macWindowData->m_macWindow , label ) ;
	m_macWindowData->m_macWindowBackgroundTheme = kThemeBrushDialogBackgroundActive ;
	UMACreateRootControl( m_macWindowData->m_macWindow , &m_macWindowData->m_macRootControl ) ;
	m_macWindowData->m_macFocus = NULL ;
  return TRUE;
}

void wxDialog::SetModal(bool flag)
{
	if ( flag )
		m_windowStyle |= wxDIALOG_MODAL ;
	else
		if ( m_windowStyle & wxDIALOG_MODAL )
  			m_windowStyle -= wxDIALOG_MODAL ;
  
  wxModelessWindows.DeleteObject(this);
  if (!flag)
    wxModelessWindows.Append(this);
}

wxDialog::~wxDialog()
{
	m_isBeingDeleted = TRUE ;
    wxTopLevelWindows.DeleteObject(this);

  m_modalShowing = FALSE;

  if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
    wxModelessWindows.DeleteObject(this);

    // If this is the last top-level window, exit.
    if (wxTheApp && (wxTopLevelWindows.Number() == 0))
    {
      wxTheApp->SetTopWindow(NULL);

      if (wxTheApp->GetExitOnFrameDelete())
      {
       	wxTheApp->ExitMainLoop() ;
      }
    }
}

// By default, pressing escape cancels the dialog
void wxDialog::OnCharHook(wxKeyEvent& event)
{
  if (event.m_keyCode == WXK_ESCAPE)
  {
		// Behaviour changed in 2.0: we'll send a Cancel message
		// to the dialog instead of Close.
		wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
		cancelEvent.SetEventObject( this );
		GetEventHandler()->ProcessEvent(cancelEvent);

		return;
  }
  // We didn't process this event.
  event.Skip();
}

void wxDialog::Iconize(bool WXUNUSED(iconize))
{
	// mac dialogs cannot be iconized
}

bool wxDialog::IsIconized() const
{
	// mac dialogs cannot be iconized
    return FALSE;
}

void wxDialog::DoSetClientSize(int width, int height)
{
	wxWindow::DoSetClientSize( width , height ) ;
}

void wxDialog::GetPosition(int *x, int *y) const
{
	DoGetPosition( x , y ) ;
}

bool wxDialog::IsShown() const
{
  return m_isShown;
}

bool wxDialog::IsModal() const
{
    return wxModalDialogs.Find((wxDialog *)this) != 0; // const_cast
}


extern bool s_macIsInModalLoop ;

bool wxDialog::Show(bool show)
{
  m_isShown = show;

  if (show)
    InitDialog();

  bool modal =  ((GetWindowStyleFlag() & wxDIALOG_MODAL) == wxDIALOG_MODAL) ;

#if WXGARBAGE_COLLECTION_ON /* MATTHEW: GC */
  if (!modal) 
  {
    if (show) 
    {
      if (!wxModelessWindows.Find(this))
        wxModelessWindows.Append(this);
    } 
    else
      wxModelessWindows.DeleteObject(this);
  }
  if (show) 
  {
    if (!wxTopLevelWindows.Find(this))
      	wxTopLevelWindows.Append(this);
  } 
  else
    	wxTopLevelWindows.DeleteObject(this);
#endif

	if ( modal )
	{
		s_macIsInModalLoop = true ;
	  	if (show)
	  	{
     		if (m_modalShowing)
      		{
//        		BringWindowToTop((HWND) GetHWND());
        		return TRUE;
      		}

      		m_modalShowing = TRUE;
      		// if we don't do it, some window might be deleted while we have pointers
      		// to them in our disabledWindows list and the program will crash when it
      		// will try to reenable them after the modal dialog end
     		wxTheApp->DeletePendingObjects();

    		UMAShowWindow( m_macWindowData->m_macWindow ) ;
    		UMASelectWindow( m_macWindowData->m_macWindow ) ;

      	if (!wxModalDialogs.Member(this))
        	wxModalDialogs.Append(this);

      	while (wxModalDialogs.Member(this) )
      	{
      		wxTheApp->MacDoOneEvent() ;
      	}
	  }
	  else
	  {
      	wxModalDialogs.DeleteObject(this);
    	UMAHideWindow( m_macWindowData->m_macWindow ) ;
	  }
	  s_macIsInModalLoop = false ;
	}
	else // !modal
	{
	  if (show)
	  {
    	UMAShowWindow( m_macWindowData->m_macWindow ) ;
    	UMASelectWindow( m_macWindowData->m_macWindow ) ;
	  }
	  else
	  {
    	UMAHideWindow( m_macWindowData->m_macWindow ) ;
	  }
	}
	return TRUE ;
}

void wxDialog::SetTitle(const wxString& title)
{
	wxWindow::SetTitle( title ) ;
}

wxString wxDialog::GetTitle() const
{
	return wxWindow::GetTitle() ;
}

void wxDialog::Centre(int direction)
{
  int x_offset,y_offset ;
  int display_width, display_height;
  int  width, height, x, y;
  wxWindow *parent = GetParent();
  if ((direction & wxCENTER_FRAME) && parent)
  {
      parent->GetPosition(&x_offset,&y_offset) ;
      parent->GetSize(&display_width,&display_height) ;
  }
  else
  {
    wxDisplaySize(&display_width, &display_height);
    x_offset = 0 ;
    y_offset = 0 ;
  }

  GetSize(&width, &height);
  GetPosition(&x, &y);

  if (direction & wxHORIZONTAL)
    x = (int)((display_width - width)/2);
  if (direction & wxVERTICAL)
    y = (int)((display_height - height)/2);

  SetSize(x+x_offset, y+y_offset, width, height);
}

// Replacement for Show(TRUE) for modal dialogs - returns return code
int wxDialog::ShowModal()
{
  m_windowStyle |= wxDIALOG_MODAL;
  Show(TRUE);
  return GetReturnCode();
}

void wxDialog::EndModal(int retCode)
{
  SetReturnCode(retCode);
  Show(FALSE);
}

// Standard buttons
void wxDialog::OnOK(wxCommandEvent& event)
{
  if ( Validate() && TransferDataFromWindow() )
  {
        if ( IsModal() )
            EndModal(wxID_OK);
        else
        {
            SetReturnCode(wxID_OK);
            this->Show(FALSE);
        }
  }
}

void wxDialog::OnApply(wxCommandEvent& event)
{
  if (Validate())
    TransferDataFromWindow();
  // TODO probably need to disable the Apply button until things change again
}

void wxDialog::OnCancel(wxCommandEvent& event)
{
    if ( IsModal() )
        EndModal(wxID_CANCEL);
    else
    {
        SetReturnCode(wxID_CANCEL);
        this->Show(FALSE);
    }
}

void wxDialog::OnPaint(wxPaintEvent& event)
{
  // No: if you call the default procedure, it makes
  // the following painting code not work.
//  wxWindow::OnPaint(event);
}

void wxDialog::OnCloseWindow(wxCloseEvent& event)
{
    // We'll send a Cancel message by default,
    // which may close the dialog.
    // Check for looping if the Cancel event handler calls Close().

    // Note that if a cancel button and handler aren't present in the dialog,
    // nothing will happen when you close the dialog via the window manager, or
    // via Close().
    // We wouldn't want to destroy the dialog by default, since the dialog may have been
    // created on the stack.
    // However, this does mean that calling dialog->Close() won't delete the dialog
    // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
    // sure to destroy the dialog.
    // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.

    static wxList closing;

    if ( closing.Member(this) )
        return;

    closing.Append(this);

    wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
    cancelEvent.SetEventObject( this );
    GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog

    closing.DeleteObject(this);
}

// Destroy the window (delayed, if a managed window)
bool wxDialog::Destroy()
{
  if (!wxPendingDelete.Member(this))
    wxPendingDelete.Append(this);
  return TRUE;
}

void wxDialog::OnSize(wxSizeEvent& WXUNUSED(event))
{
  // if we're using constraints - do use them
  #if wxUSE_CONSTRAINTS
    if ( GetAutoLayout() )
    {
      Layout();
    }
  #endif
}

void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& event)
{
  SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  Refresh();
}

void wxDialog::Fit()
{
  wxWindow::Fit();
}

