fix for the crash when many listctrl items change state

[wxWidgets.git] / src / mac / listbox.cpp

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

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

#include "wx/app.h"
#include "wx/listbox.h"
#include "wx/settings.h"
#include "wx/dynarray.h"
#include "wx/log.h"

#include "wx/utils.h"
#ifndef __DARWIN__
//  #include "extldef.h"
#endif

#if !USE_SHARED_LIBRARY
  IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)

BEGIN_EVENT_TABLE(wxListBox, wxControl)
    EVT_SIZE( wxListBox::OnSize ) 
END_EVENT_TABLE()
#endif

#include "wx/mac/uma.h"


typedef struct {
 unsigned short instruction;
 void (*function)();
} ldefRec, *ldefPtr, **ldefHandle;

extern "C"
{
static pascal void wxMacListDefinition( short message, Boolean isSelected, Rect *drawRect,
                                     Cell cell, short dataOffset, short dataLength,
                                     ListHandle listHandle ) ;
}

static pascal void wxMacListDefinition( short message, Boolean isSelected, Rect *drawRect,
                                     Cell cell, short dataOffset, short dataLength,
                                     ListHandle listHandle )
{
    FontInfo fontInfo;
    GrafPtr savePort;
    GrafPtr grafPtr;
    RgnHandle savedClipRegion;
    SInt32 savedPenMode;
    wxListBox*          list;
  GetPort(&savePort);
  SetPort((**listHandle).port);
  grafPtr = (**listHandle).port ;
    // typecast our refCon
    list = (wxListBox*) GetControlReference( (ControlHandle) GetListRefCon(listHandle) );
    
    //  Calculate the cell rect.
    
    switch( message ) {
        case lInitMsg:
            break;

        case lCloseMsg:
            break;

        case lDrawMsg:
        {
            const wxString text = list->m_stringArray[cell.v] ;

            //  Save the current clip region, and set the clip region to the area we are about
            //  to draw.
            
            savedClipRegion = NewRgn();
            GetClip( savedClipRegion );

            ClipRect( drawRect );
            EraseRect( drawRect );
            
        MoveTo(drawRect->left + 4 , drawRect->top + 10 );
        ::TextFont( kFontIDMonaco ) ;
        ::TextSize( 9  );
        ::TextFace( 0 ) ;
 
        DrawText(text, 0 , text.Length());
            //  If the cell is hilited, do the hilite now. Paint the cell contents with the
            //  appropriate QuickDraw transform mode.
            
            if( isSelected ) {
                savedPenMode = GetPortPenMode( grafPtr );
                SetPortPenMode( grafPtr, hilitetransfermode );
                PaintRect( drawRect );
                SetPortPenMode( grafPtr, savedPenMode );
            }
            
            //  Restore the saved clip region.
            
            SetClip( savedClipRegion );
            DisposeRgn( savedClipRegion );
            }
            break;
        case lHiliteMsg:
            
            //  Hilite or unhilite the cell. Paint the cell contents with the
            //  appropriate QuickDraw transform mode.
            
            GetPort( &grafPtr );
            savedPenMode = GetPortPenMode( grafPtr );
            SetPortPenMode( grafPtr, hilitetransfermode );
            PaintRect( drawRect );
            SetPortPenMode( grafPtr, savedPenMode );
            break;
        default :
          break ;
    }
    SetPort(savePort);  
}

extern "C" void MacDrawStringCell(Rect *cellRect, Cell lCell, ListHandle theList, long refCon) ;
const short kwxMacListWithVerticalScrollbar = 128 ;

// ============================================================================
// list box control implementation
// ============================================================================

// Listbox item
wxListBox::wxListBox()
{
  m_noItems = 0;
  m_selected = 0;
  m_macList = NULL ;
}

static ListDefUPP macListDefUPP = NULL ;

bool wxListBox::Create(wxWindow *parent, wxWindowID id,
                       const wxPoint& pos,
                       const wxSize& size,
                       int n, const wxString choices[],
                       long style,
                       const wxValidator& validator,
                       const wxString& name)
{
    m_noItems = 0 ; // this will be increased by our append command
    m_selected = 0;
    
    Rect bounds ;
    Str255 title ;
    
    MacPreControlCreate( parent , id ,  "" , pos , size ,style, validator , name , &bounds , title ) ;

    ListDefSpec listDef;
    listDef.defType = kListDefUserProcType;
    if ( macListDefUPP == NULL )
    {
      macListDefUPP = NewListDefUPP( wxMacListDefinition ); 
    }
        listDef.u.userProc = macListDefUPP ;
#if TARGET_CARBON
    Size asize;


    CreateListBoxControl( parent->GetMacRootWindow(), &bounds, false, 0, 1, false, true,
                          14, 14, false, &listDef, &m_macControl );

    GetControlData(m_macControl, kControlNoPart, kControlListBoxListHandleTag,
                   sizeof(ListHandle), (Ptr) &m_macList, &asize);

    SetControlReference(m_macControl, (long) this);
    SetControlVisibility(m_macControl, false, false);

#else
    long    result ;

    m_macControl = ::NewControl( parent->GetMacRootWindow() , &bounds , title , false ,
                  kwxMacListWithVerticalScrollbar , 0 , 0, 
                  kControlListBoxProc , (long) this ) ;
    ::GetControlData( m_macControl , kControlNoPart , kControlListBoxListHandleTag ,
               sizeof( ListHandle ) , (char*) &m_macList  , &result ) ;

    HLock( (Handle) m_macList ) ;
    ldefHandle ldef ;
    ldef = (ldefHandle) NewHandle( sizeof(ldefRec) ) ;
    if (  (**m_macList).listDefProc != NULL )
    {
      (**ldef).instruction = 0x4EF9;  /* JMP instruction */
      (**ldef).function = (void(*)()) listDef.u.userProc;
      (**m_macList).listDefProc = (Handle) ldef ;
    }
        
    Point pt = (**m_macList).cellSize ;
    pt.v = 14 ;
    LCellSize( pt , m_macList ) ;
    
    LAddColumn( 1 , 0 , m_macList ) ;
#endif
    OptionBits  options = 0;
    if ( style & wxLB_MULTIPLE )
    {
        options += lNoExtend ;
    }
    else if ( style & wxLB_EXTENDED )
    {
        options += lExtendDrag ;
    }
    else
    {
        options = lOnlyOne ;
    }
    SetListSelectionFlags(m_macList, options);
    
    MacPostControlCreate() ;
    
    for ( int i = 0 ; i < n ; i++ )
    {
        Append( choices[i] ) ;
    }
    
    LSetDrawingMode( true , m_macList ) ;

    return TRUE;
}

wxListBox::~wxListBox()
{
    Free() ;
    if ( m_macList )
    {
#if !TARGET_CARBON
      DisposeHandle( (**m_macList).listDefProc ) ;
      (**m_macList).listDefProc = NULL ;
#endif
        m_macList = NULL ;
    }
}

void wxListBox::Free()
{
#if wxUSE_OWNER_DRAWN
    if ( m_windowStyle & wxLB_OWNERDRAW )
    {
        size_t uiCount = m_aItems.Count();
        while ( uiCount-- != 0 ) {
            delete m_aItems[uiCount];
        }

        m_aItems.Clear();
    }
    else
#endif // wxUSE_OWNER_DRAWN
    if ( HasClientObjectData() )
    {
        for ( size_t n = 0; n < (size_t)m_noItems; n++ )
        {
            delete GetClientObject(n);
        }
    }
}

void  wxListBox::DoSetSize(int x, int y,
            int width, int height,
            int sizeFlags )
{
    wxControl::DoSetSize( x , y , width , height , sizeFlags ) ;
#if TARGET_CARBON
    Rect bounds ;
    GetControlBounds( m_macControl , &bounds ) ;
    ControlRef control = GetListVerticalScrollBar( m_macList ) ;
    if ( control )
    {
        Rect scrollbounds ;
        GetControlBounds( control , &scrollbounds ) ;
        if( scrollbounds.right != bounds.right + 1 )
        {
            UMAMoveControl( control , bounds.right - (scrollbounds.right - scrollbounds.left) + 1 , 
                scrollbounds.top ) ;
        }
    }
#endif
}
void wxListBox::DoSetFirstItem(int N)
{
    MacScrollTo( N ) ;
}

void wxListBox::Delete(int N)
{
    wxCHECK_RET( N >= 0 && N < m_noItems,
                 wxT("invalid index in wxListBox::Delete") );

#if wxUSE_OWNER_DRAWN
    delete m_aItems[N];
    m_aItems.RemoveAt(N);
#else // !wxUSE_OWNER_DRAWN
    if ( HasClientObjectData() )
    {
        delete GetClientObject(N);
    }
#endif // wxUSE_OWNER_DRAWN/!wxUSE_OWNER_DRAWN
    m_stringArray.Remove( N ) ;
    m_dataArray.RemoveAt( N ) ;
    m_noItems --;
    
    MacDelete( N ) ;
}

int wxListBox::DoAppend(const wxString& item)
{
    int index = m_noItems ;
    if( wxApp::s_macDefaultEncodingIsPC )
    {
        m_stringArray.Add( wxMacMakeMacStringFromPC( item ) ) ;
        m_dataArray.Add( NULL );
    }
    else {
        m_stringArray.Add( item ) ;
        m_dataArray.Add( NULL );
    }
    m_noItems ++;
    DoSetItemClientData( index , NULL ) ;
    MacAppend( item ) ;

    return index ;
}

void wxListBox::DoSetItems(const wxArrayString& choices, void** clientData)
{ 
  MacSetRedraw( false ) ;
  Clear() ;  
  int n = choices.GetCount();

  for( int i = 0 ; i < n ; ++i )
  {
    if ( clientData )
    {
#if wxUSE_OWNER_DRAWN
            wxASSERT_MSG(clientData[i] == NULL,
                         wxT("Can't use client data with owner-drawn listboxes"));
#else // !wxUSE_OWNER_DRAWN
        Append( choices[i] , clientData[i] ) ;
 #endif
    }
    else
        Append( choices[i] ) ;
  }

#if wxUSE_OWNER_DRAWN
    if ( m_windowStyle & wxLB_OWNERDRAW ) {
        // first delete old items
        size_t ui = m_aItems.Count();
        while ( ui-- != 0 ) {
            delete m_aItems[ui];
        }
        m_aItems.Empty();

        // then create new ones
        for ( ui = 0; ui < (size_t)m_noItems; ui++ ) {
            wxOwnerDrawn *pNewItem = CreateItem(ui);
            pNewItem->SetName(choices[ui]);
            m_aItems.Add(pNewItem);
        }
    }
#endif // wxUSE_OWNER_DRAWN
  MacSetRedraw( true ) ;
}

bool wxListBox::HasMultipleSelection() const
{
    return (m_windowStyle & wxLB_MULTIPLE) || (m_windowStyle & wxLB_EXTENDED);
}

int wxListBox::FindString(const wxString& st) const
{
    wxString s ;
    if( wxApp::s_macDefaultEncodingIsPC )
    {
        s = wxMacMakeMacStringFromPC( st ) ;
    }
    else
        s = st ;
        
    if ( s.Right(1) == "*" )
    {
        wxString search = s.Left( s.Length() - 1 ) ;
        int len = search.Length() ;
        Str255 s1 , s2 ;

#if TARGET_CARBON
        c2pstrcpy( (StringPtr) s2 , search.c_str() ) ;
#else
        strcpy( (char *) s2 , search.c_str() ) ;
        c2pstr( (char *) s2 ) ;
#endif

        for ( int i = 0 ; i < m_noItems ; ++ i )
        {
#if TARGET_CARBON
            c2pstrcpy( (StringPtr) s1 , m_stringArray[i].Left( len ).c_str() ) ;
#else
            strcpy( (char *) s1 , m_stringArray[i].Left( len ).c_str() ) ;
            c2pstr( (char *) s1 ) ;
#endif
            if ( EqualString( s1 , s2 , false , false ) )
                return i ;
        }
        if ( s.Left(1) == "*" && s.Length() > 1 )
        {
            s.MakeLower() ;
            for ( int i = 0 ; i < m_noItems ; ++i )
            {
                if ( GetString(i).Lower().Matches(s) )
                    return i ;
            }
        }   

    }
    else
    {
        Str255 s1 , s2 ;

#if TARGET_CARBON
        c2pstrcpy( (StringPtr) s2 , s.c_str() ) ;
#else
        strcpy( (char *) s2 , s.c_str() ) ;
        c2pstr( (char *) s2 ) ;
#endif

        for ( int i = 0 ; i < m_noItems ; ++ i )
        {
#if TARGET_CARBON
            c2pstrcpy( (StringPtr) s1 , m_stringArray[i].c_str() ) ;
#else
            strcpy( (char *) s1 , m_stringArray[i].c_str() ) ;
            c2pstr( (char *) s1 ) ;
#endif
            if ( EqualString( s1 , s2 , false , false ) )
                return i ;
        }
   }
   return -1;
}

void wxListBox::Clear()
{
  Free();
  m_noItems = 0;
  m_stringArray.Empty() ;
  m_dataArray.Empty() ;
  MacClear() ;
}

void wxListBox::SetSelection(int N, bool select)
{
    wxCHECK_RET( N >= 0 && N < m_noItems,
                 "invalid index in wxListBox::SetSelection" );
      MacSetSelection( N , select ) ;
      GetSelections( m_selectionPreImage ) ;
}

bool wxListBox::IsSelected(int N) const
{
    wxCHECK_MSG( N >= 0 && N < m_noItems, FALSE,
                 "invalid index in wxListBox::Selected" );

      return MacIsSelected( N ) ;
}

void *wxListBox::DoGetItemClientData(int N) const
{
    wxCHECK_MSG( N >= 0 && N < m_noItems, NULL,
                 wxT("invalid index in wxListBox::GetClientData"));

    return (void *)m_dataArray[N];
}

wxClientData *wxListBox::DoGetItemClientObject(int N) const
{
    return (wxClientData *) DoGetItemClientData( N ) ;
}

void wxListBox::DoSetItemClientData(int N, void *Client_data)
{
    wxCHECK_RET( N >= 0 && N < m_noItems,
                 "invalid index in wxListBox::SetClientData" );

#if wxUSE_OWNER_DRAWN
    if ( m_windowStyle & wxLB_OWNERDRAW )
    {
        // client data must be pointer to wxOwnerDrawn, otherwise we would crash
        // in OnMeasure/OnDraw.
        wxFAIL_MSG(wxT("Can't use client data with owner-drawn listboxes"));
    }
#endif // wxUSE_OWNER_DRAWN
    wxASSERT_MSG( m_dataArray.GetCount() >= N , "invalid client_data array" ) ;
    
    if ( m_dataArray.GetCount() > N )
    {
        m_dataArray[N] = (char*) Client_data ;
    }
    else
    {
        m_dataArray.Add( (char*) Client_data ) ;
    }
}

void wxListBox::DoSetItemClientObject(int n, wxClientData* clientData)
{
    DoSetItemClientData(n, clientData);
}

// Return number of selections and an array of selected integers
int wxListBox::GetSelections(wxArrayInt& aSelections) const
{
    return MacGetSelections( aSelections ) ;
}

// Get single selection, for single choice list items
int wxListBox::GetSelection() const
{
    return MacGetSelection() ;
}

// Find string for position
wxString wxListBox::GetString(int N) const
{
    if( wxApp::s_macDefaultEncodingIsPC )
    {
        return      wxMacMakePCStringFromMac( m_stringArray[N] ) ;
    }
    else
        return m_stringArray[N]  ;
}

void wxListBox::DoInsertItems(const wxArrayString& items, int pos)
{
    wxCHECK_RET( pos >= 0 && pos <= m_noItems,
                 wxT("invalid index in wxListBox::InsertItems") );

    int nItems = items.GetCount();

    for ( int i = 0 ; i < nItems ; i++ )
    {
        m_stringArray.Insert( items[i] , pos + i ) ;
        m_dataArray.Insert( NULL , pos + i ) ;
        MacInsert( pos + i , items[i] ) ;
    }

    m_noItems += nItems;
}

void wxListBox::SetString(int N, const wxString& s)
{
    wxString str ;
    if( wxApp::s_macDefaultEncodingIsPC )
    {
        str = wxMacMakeMacStringFromPC( s )  ;
    }
    else
        str = s ;
    m_stringArray[N] = str ;
    MacSet( N , s ) ;
}

wxSize wxListBox::DoGetBestSize() const
{
    return wxSize(100, 100);
}

int wxListBox::GetCount() const
{
    return m_noItems;
}

void wxListBox::SetupColours()
{
    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
    SetForegroundColour(GetParent()->GetForegroundColour());
}

void wxListBox::Refresh(bool eraseBack, const wxRect *rect)
{
    // Set up port
    WindowRef rootwindow = GetMacRootWindow() ;
    wxWindow* wxrootwindow = wxFindWinFromMacWindow( rootwindow ) ;
    wxMacDrawingHelper focus( wxrootwindow );

    UMADrawControl(m_macControl);
}

#if wxUSE_OWNER_DRAWN

class wxListBoxItem : public wxOwnerDrawn
{
public:
    wxListBoxItem(const wxString& str = "");
};

wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, FALSE)
{
    // no bitmaps/checkmarks
    SetMarginWidth(0);
}

wxOwnerDrawn *wxListBox::CreateItem(size_t n)
{
    return new wxListBoxItem();
}

#endif  //USE_OWNER_DRAWN

// ============================================================================
// list box control implementation
// ============================================================================

void MacDrawStringCell(Rect *cellRect, Cell lCell, ListHandle theList, long refCon)
{
    wxListBox*          list;
    // typecast our refCon
    list = (wxListBox*)refCon;
        
    MoveTo(cellRect->left + 4 , cellRect->top + 10 );
    const wxString text = list->m_stringArray[lCell.v] ;
    ::TextFont( kFontIDMonaco ) ;
    ::TextSize( 9  );
    ::TextFace( 0 ) ;
    DrawText(text, 0 , text.Length());
        
}

void wxListBox::MacDelete( int N )
{
    LDelRow( 1 , N , m_macList) ;
    Refresh();
}

void wxListBox::MacInsert( int n , const char * text) 
{
    Cell cell = { 0 , 0 } ;
    cell.v = n ;
    LAddRow( 1 , cell.v , m_macList ) ;
//    LSetCell(text, strlen(text), cell, m_macList);
    Refresh();
}

void wxListBox::MacAppend( const char * text) 
{
    Cell cell = { 0 , 0 } ;
    cell.v = (**m_macList).dataBounds.bottom ;
    LAddRow( 1 , cell.v , m_macList ) ;
 //   LSetCell(text, strlen(text), cell, m_macList);
    Refresh();
}

void wxListBox::MacClear() 
{
    LDelRow( (**m_macList).dataBounds.bottom , 0 , m_macList ) ;
    Refresh();
}

void wxListBox::MacSetSelection( int n , bool select )
{
    Cell cell = { 0 , 0 } ;
    if ( ! (m_windowStyle & wxLB_MULTIPLE) )
    {
    if ( LGetSelect( true , &cell , m_macList ) )
    {
        LSetSelect( false , cell , m_macList ) ;
    }
    }
    
    cell.v = n ;
    LSetSelect( select , cell , m_macList ) ;
    LAutoScroll( m_macList ) ;
    Refresh();
}

bool wxListBox::MacIsSelected( int n ) const
{
    Cell cell = { 0 , 0 } ;
    cell.v = n ;
    return LGetSelect( false , &cell , m_macList ) ;
}

void wxListBox::MacDestroy()
{
//    DisposeExtLDEFInfo( m_macList ) ;
}

int wxListBox::MacGetSelection() const
{
    Cell cell = { 0 , 0 } ;
    if ( LGetSelect( true , &cell , m_macList ) )
        return cell.v ;
    else
        return -1 ;
}

int wxListBox::MacGetSelections( wxArrayInt& aSelections ) const
{
    int no_sel = 0 ;
    
    aSelections.Empty();

    Cell cell = { 0 , 0 } ;
    cell.v = 0 ;
    
    while ( LGetSelect( true , &cell , m_macList ) )
    {
        aSelections.Add( cell.v ) ;
        no_sel++ ;
        cell.v++ ;
    }
    return no_sel ;
}

void wxListBox::MacSet( int n , const char * text )
{
    // our implementation does not store anything in the list
    // so we just have to redraw
    Cell cell = { 0 , 0 } ;
    cell.v = n ;
//  LSetCell(text, strlen(text), cell, m_macList);
    Refresh();
}

void wxListBox::MacScrollTo( int n )
{
    // TODO implement scrolling
}

void wxListBox::OnSize( const wxSizeEvent &event)
{
    Point pt;

#if TARGET_CARBON
    GetListCellSize(m_macList, &pt);
#else
    pt = (**m_macList).cellSize ;
#endif
    pt.h =  m_width - 15  ;
    LCellSize( pt , m_macList ) ;
}

void wxListBox::MacHandleControlClick( ControlHandle control , SInt16 controlpart ) 
{
    Boolean wasDoubleClick = false ;
    long    result ;

    ::GetControlData( m_macControl , kControlNoPart , kControlListBoxDoubleClickTag , sizeof( wasDoubleClick ) , (char*) &wasDoubleClick  , &result ) ;
    if ( !wasDoubleClick )
    {
        MacDoClick() ;
    }
    else
    {
        MacDoDoubleClick() ;
    }
}

void wxListBox::MacSetRedraw( bool doDraw ) 
{
    LSetDrawingMode( doDraw , m_macList ) ;
    
}

void wxListBox::MacDoClick()
{
    wxArrayInt aSelections;
    int n, count = GetSelections(aSelections);
    
    if ( count == m_selectionPreImage.GetCount() )
    {
        bool hasChanged = false ;
        for ( int i = 0 ; i < count ; ++i )
        {
            if ( aSelections[i] != m_selectionPreImage[i] )
            {
                hasChanged = true ;
                break ;
            }
        }
        if ( !hasChanged )
        {
            return ;
        }
    }
    
    m_selectionPreImage = aSelections;
    
    wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, m_windowId);
    event.SetEventObject( this );

    if ( count > 0 )
    {
        n = aSelections[0];
        if ( HasClientObjectData() )
            event.SetClientObject( GetClientObject(n) );
        else if ( HasClientUntypedData() )
            event.SetClientData( GetClientData(n) );
        event.SetString( GetString(n) );
    }
    else
    {
         n = -1;
    }
    
    event.m_commandInt = n;

    GetEventHandler()->ProcessEvent(event);
}

void wxListBox::MacDoDoubleClick()
{
    wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, m_windowId);
    event.SetEventObject( this );
    GetEventHandler()->ProcessEvent(event) ; 
}