workaround because regions that were built up, were sometimes being drawn on the...

[wxWidgets.git] / src / mac / carbon / combobxc.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        combobox.cpp
// Purpose:     wxComboBox class
// Author:      Stefan Csomor
// Modified by:
// Created:     1998-01-01
// RCS-ID:      $Id$
// Copyright:   (c) Stefan Csomor
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "combobox.h"
#endif

#include "wx/wxprec.h"

#include "wx/combobox.h"
#include "wx/button.h"
#include "wx/menu.h"
#include "wx/mac/uma.h"
#if TARGET_API_MAC_OSX
#ifndef __HIVIEW__
    #include <HIToolbox/HIView.h>
#endif
#endif

IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)

// composite combobox implementation by Dan "Bud" Keith bud@otsys.com

#if TARGET_API_MAC_OSX
#define USE_HICOMBOBOX 1 //use hi combobox define
#else
#define USE_HICOMBOBOX 0
#endif

static int nextPopUpMenuId = 1000 ;
MenuHandle NewUniqueMenu()
{
  MenuHandle handle = NewMenu( nextPopUpMenuId , "\pMenu" ) ;
  nextPopUpMenuId++ ;
  return handle ;
}

#if USE_HICOMBOBOX
static const EventTypeSpec eventList[] =
{
    { kEventClassTextField , kEventTextAccepted } ,
} ;

static pascal OSStatus wxMacComboBoxEventHandler( EventHandlerCallRef handler , EventRef event , void *data )
{
    OSStatus result = eventNotHandledErr ;
    wxComboBox* cb = (wxComboBox*) data ;

    wxMacCarbonEvent cEvent( event ) ;

    switch( cEvent.GetClass() )
    {
        case kEventClassTextField :
            switch( cEvent.GetKind() )
            {
                case kEventTextAccepted :
                    {
                        wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, cb->GetId() );
                        event.SetInt( cb->GetSelection() );
                        event.SetString( cb->GetStringSelection() );
                        event.SetEventObject( cb );
                        cb->GetEventHandler()->ProcessEvent( event );
                    }
                    break ;
                default :
                    break ;
            }
            break ;
        default :
            break ;
    }


    return result ;
}

DEFINE_ONE_SHOT_HANDLER_GETTER( wxMacComboBoxEventHandler )

#endif

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

// the margin between the text control and the choice
static const wxCoord MARGIN = 2;
#if TARGET_API_MAC_OSX
static const int    POPUPWIDTH = 24;
#else
static const int    POPUPWIDTH = 18;
#endif
static const int    POPUPHEIGHT = 23;

// ----------------------------------------------------------------------------
// wxComboBoxText: text control forwards events to combobox
// ----------------------------------------------------------------------------

class wxComboBoxText : public wxTextCtrl
{
public:
    wxComboBoxText( wxComboBox * cb )
        : wxTextCtrl( cb , 1 )
    {
        m_cb = cb;
    }

protected:
    void OnChar( wxKeyEvent& event )
    {
        if ( event.GetKeyCode() == WXK_RETURN )
        {
            wxString value = GetValue();

            if ( m_cb->GetCount() == 0 )
            {
                // make Enter generate "selected" event if there is only one item
                // in the combobox - without it, it's impossible to select it at
                // all!
                wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
                event.SetInt( 0 );
                event.SetString( value );
                event.SetEventObject( m_cb );
                m_cb->GetEventHandler()->ProcessEvent( event );
            }
            else
            {
                // add the item to the list if it's not there yet
                if ( m_cb->FindString(value) == wxNOT_FOUND )
                {
                    m_cb->Append(value);
                    m_cb->SetStringSelection(value);

                    // and generate the selected event for it
                    wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
                    event.SetInt( m_cb->GetCount() - 1 );
                    event.SetString( value );
                    event.SetEventObject( m_cb );
                    m_cb->GetEventHandler()->ProcessEvent( event );
                }

                // This will invoke the dialog default action, such
                // as the clicking the default button.

                wxWindow *parent = GetParent();
                while( parent && !parent->IsTopLevel() && parent->GetDefaultItem() == NULL ) {
                    parent = parent->GetParent() ;
                }
                if ( parent && parent->GetDefaultItem() )
                {
                    wxButton *def = wxDynamicCast(parent->GetDefaultItem(),
                                                          wxButton);
                    if ( def && def->IsEnabled() )
                    {
                        wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
                        event.SetEventObject(def);
                        def->Command(event);
                        return ;
                    }
                }

                return;
            }
        }

        event.Skip();
    }
private:
    wxComboBox *m_cb;

    DECLARE_EVENT_TABLE()
};

BEGIN_EVENT_TABLE(wxComboBoxText, wxTextCtrl)
    EVT_CHAR( wxComboBoxText::OnChar)
END_EVENT_TABLE()

class wxComboBoxChoice : public wxChoice
{
public:
    wxComboBoxChoice(wxComboBox *cb, int style)
        : wxChoice( cb , 1 )
    {
        m_cb = cb;
    }

protected:
    void OnChoice( wxCommandEvent& e )
    {
        wxString    s = e.GetString();

        m_cb->DelegateChoice( s );
        wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, m_cb->GetId() );
        event2.SetInt(m_cb->GetSelection());
        event2.SetEventObject(m_cb);
        event2.SetString(m_cb->GetStringSelection());
        m_cb->ProcessCommand(event2);
    }
    virtual wxSize DoGetBestSize() const
    {
        wxSize sz = wxChoice::DoGetBestSize() ;
        sz.x = POPUPWIDTH ;
        return sz ;
    }

private:
    wxComboBox *m_cb;

    DECLARE_EVENT_TABLE()
};

BEGIN_EVENT_TABLE(wxComboBoxChoice, wxChoice)
    EVT_CHOICE(wxID_ANY, wxComboBoxChoice::OnChoice)
END_EVENT_TABLE()

wxComboBox::~wxComboBox()
{
    // delete client objects
    FreeData();

    // delete the controls now, don't leave them alive even though they would
    // still be eventually deleted by our parent - but it will be too late, the
    // user code expects them to be gone now
    if (m_text != NULL) {
        delete m_text;
        m_text = NULL;
    }
    if (m_choice != NULL) {
        delete m_choice;
        m_choice = NULL;
    }
}


// ----------------------------------------------------------------------------
// geometry
// ----------------------------------------------------------------------------

wxSize wxComboBox::DoGetBestSize() const
{
#if USE_HICOMBOBOX
    return wxControl::DoGetBestSize();
#else
    wxSize size = m_choice->GetBestSize();

    if ( m_text != NULL )
    {
        wxSize  sizeText = m_text->GetBestSize();

        size.x = POPUPWIDTH + sizeText.x + MARGIN;
    }

    return size;
#endif
}

void wxComboBox::DoMoveWindow(int x, int y, int width, int height) {
#if USE_HICOMBOBOX
    wxControl::DoMoveWindow(x, y, width, height);
#else
    height = POPUPHEIGHT;

    wxControl::DoMoveWindow(x, y, width, height);

    if ( m_text == NULL )
    {
        // we might not be fully constructed yet, therefore watch out...
        if ( m_choice )
            m_choice->SetSize(0, 0 , width, wxDefaultCoord);
    }
    else
    {
        wxCoord wText = width - POPUPWIDTH - MARGIN;
        m_text->SetSize(0, 0, wText, height);
        m_choice->SetSize(0 + wText + MARGIN, 0, POPUPWIDTH, wxDefaultCoord);
    }
#endif
}



// ----------------------------------------------------------------------------
// operations forwarded to the subcontrols
// ----------------------------------------------------------------------------

bool wxComboBox::Enable(bool enable)
{
    if ( !wxControl::Enable(enable) )
        return false;

    return true;
}

bool wxComboBox::Show(bool show)
{
    if ( !wxControl::Show(show) )
        return false;

    return true;
}

void wxComboBox::SetFocus()
{
#if USE_HICOMBOBOX
    wxControl::SetFocus();
#else
    if ( m_text != NULL) {
        m_text->SetFocus();
    }
#endif
}


void wxComboBox::DelegateTextChanged( const wxString& value )
{
    SetStringSelection( value );
}


void wxComboBox::DelegateChoice( const wxString& value )
{
    SetStringSelection( value );
}


bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
           const wxString& value,
           const wxPoint& pos,
           const wxSize& size,
           const wxArrayString& choices,
           long style,
           const wxValidator& validator,
           const wxString& name)
{
    wxCArrayString chs( choices );

    return Create( parent, id, value, pos, size, chs.GetCount(),
                   chs.GetStrings(), style, validator, name );
}


bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
           const wxString& value,
           const wxPoint& pos,
           const wxSize& size,
           int n, const wxString choices[],
           long style,
           const wxValidator& validator,
           const wxString& name)
{
    m_text = NULL;
    m_choice = NULL;
#if USE_HICOMBOBOX
    m_macIsUserPane = false ;
#endif
    if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style ,
                            wxDefaultValidator, name) )
    {
        return false;
    }
#if USE_HICOMBOBOX
    Rect bounds = wxMacGetBoundsForControl( this , pos , size ) ;
    HIRect hiRect;

    hiRect.origin.x = 20; //bounds.left;
    hiRect.origin.y = 25; //bounds.top;
    hiRect.size.width = 120;// bounds.right - bounds.left;
    hiRect.size.height = 24;

    //For some reason, this code causes the combo box not to be displayed at all.
    //hiRect.origin.x = bounds.left;
    //hiRect.origin.y = bounds.top;
    //hiRect.size.width = bounds.right - bounds.left;
    //hiRect.size.height = bounds.bottom - bounds.top;
    //printf("left = %d, right = %d, top = %d, bottom = %d\n", bounds.left, bounds.right, bounds.top, bounds.bottom);
    //printf("x = %d, y = %d, width = %d, height = %d\n", hibounds.origin.x, hibounds.origin.y, hibounds.size.width, hibounds.size.height);
    m_peer = new wxMacControl(this) ;
    verify_noerr( HIComboBoxCreate( &hiRect, CFSTR(""), NULL, NULL, kHIComboBoxStandardAttributes, *m_peer ) );


    SetControl32BitMinimum( *m_peer , 0 ) ;
    SetControl32BitMaximum( *m_peer , 100) ;
    if ( n > 0 )
        SetControl32BitValue( *m_peer , 1 ) ;

    MacPostControlCreate(pos,size) ;

    for ( int i = 0 ; i < n ; i++ )
    {
        DoAppend( choices[ i ] );
    }

    HIViewSetVisible( *m_peer, true );
    SetSelection(0);
    EventHandlerRef comboEventHandler ;
    InstallControlEventHandler( *m_peer, GetwxMacComboBoxEventHandlerUPP(),
        GetEventTypeCount(eventList), eventList, this,
        (EventHandlerRef *)&comboEventHandler);
#else
    m_choice = new wxComboBoxChoice(this, style );

    m_choice = new wxComboBoxChoice(this, style );
    m_choice->SetSizeHints( wxSize( POPUPWIDTH , POPUPHEIGHT ) ) ;

    wxSize csize = size;
    if ( style & wxCB_READONLY )
    {
        m_text = NULL;
    }
    else
    {
        m_text = new wxComboBoxText(this);
        if ( size.y == wxDefaultCoord ) {
          csize.y = m_text->GetSize().y ;
        }
    }

    DoSetSize(pos.x, pos.y, csize.x, csize.y);

    for ( int i = 0 ; i < n ; i++ )
    {
        m_choice->DoAppend( choices[ i ] );
    }
    SetBestSize(csize);   // Needed because it is a wxControlWithItems
#endif

    return true;
}

wxString wxComboBox::GetValue() const
{
#if USE_HICOMBOBOX
    CFStringRef myString;
    HIComboBoxCopyTextItemAtIndex( *m_peer, (CFIndex)GetSelection(), &myString );
    return wxMacCFStringHolder( myString, m_font.GetEncoding() ).AsString();
#else
    wxString        result;

    if ( m_text == NULL )
    {
        result = m_choice->GetString( m_choice->GetSelection() );
    }
    else
    {
        result = m_text->GetValue();
    }

    return result;
#endif
}

void wxComboBox::SetValue(const wxString& value)
{
#if USE_HICOMBOBOX

#else
    int s = FindString (value);
    if (s == wxNOT_FOUND && !HasFlag(wxCB_READONLY) )
    {
        m_choice->Append(value) ;
    }
    SetStringSelection( value ) ;
#endif
}

// Clipboard operations
void wxComboBox::Copy()
{
    if ( m_text != NULL )
    {
        m_text->Copy();
    }
}

void wxComboBox::Cut()
{
    if ( m_text != NULL )
    {
        m_text->Cut();
    }
}

void wxComboBox::Paste()
{
    if ( m_text != NULL )
    {
        m_text->Paste();
    }
}

void wxComboBox::SetEditable(bool editable)
{
    if ( ( m_text == NULL ) && editable )
    {
        m_text = new wxComboBoxText( this );
    }
    else if ( ( m_text != NULL ) && !editable )
    {
        delete m_text;
        m_text = NULL;
    }

    int currentX, currentY;
    GetPosition( &currentX, &currentY );

    int currentW, currentH;
    GetSize( &currentW, &currentH );

    DoMoveWindow( currentX, currentY, currentW, currentH );
}

void wxComboBox::SetInsertionPoint(long pos)
{
    // TODO
}

void wxComboBox::SetInsertionPointEnd()
{
    // TODO
}

long wxComboBox::GetInsertionPoint() const
{
    // TODO
    return 0;
}

wxTextPos wxComboBox::GetLastPosition() const
{
    // TODO
    return 0;
}

void wxComboBox::Replace(long from, long to, const wxString& value)
{
    // TODO
}

void wxComboBox::Remove(long from, long to)
{
    // TODO
}

void wxComboBox::SetSelection(long from, long to)
{
    // TODO
}

int wxComboBox::DoAppend(const wxString& item)
{
#if USE_HICOMBOBOX
    CFIndex outIndex;
    HIComboBoxAppendTextItem( *m_peer, wxMacCFStringHolder( item, m_font.GetEncoding() ), &outIndex );
    //SetControl32BitMaximum( *m_peer, GetCount() );
    return (int) outIndex;
#else
    return m_choice->DoAppend( item ) ;
#endif
}

int wxComboBox::DoInsert(const wxString& item, int pos)
{
#if USE_HICOMBOBOX
    HIComboBoxInsertTextItemAtIndex( *m_peer, (CFIndex)pos, wxMacCFStringHolder(item, m_font.GetEncoding()) );

    //SetControl32BitMaximum( *m_peer, GetCount() );

    return pos;
#else
    return m_choice->DoInsert( item , pos ) ;
#endif
}

void wxComboBox::DoSetItemClientData(int n, void* clientData)
{
#if USE_HICOMBOBOX
    return; //TODO
#else
    return m_choice->DoSetItemClientData( n , clientData ) ;
#endif
}

void* wxComboBox::DoGetItemClientData(int n) const
{
#if USE_HICOMBOBOX
    return NULL; //TODO
#else
    return m_choice->DoGetItemClientData( n ) ;
#endif
}

void wxComboBox::DoSetItemClientObject(int n, wxClientData* clientData)
{
#if USE_HICOMBOBOX
    return; //TODO
#else
    return m_choice->DoSetItemClientObject( n , clientData ) ;
#endif
}

wxClientData* wxComboBox::DoGetItemClientObject(int n) const
{
#if USE_HICOMBOBOX
    return NULL;
#else
    return m_choice->DoGetItemClientObject( n ) ;
#endif
}

void wxComboBox::FreeData()
{
    if ( HasClientObjectData() )
    {
        size_t count = GetCount();
        for ( size_t n = 0; n < count; n++ )
        {
            SetClientObject( n, NULL );
        }
    }
}

int wxComboBox::GetCount() const {
#if USE_HICOMBOBOX
    return (int) HIComboBoxGetItemCount( *m_peer );
#else
    return m_choice->GetCount() ;
#endif
}

void wxComboBox::Delete(int n)
{
#if USE_HICOMBOBOX
    HIComboBoxRemoveItemAtIndex( *m_peer, (CFIndex)n );
#else
    // force client object deletion
    if( HasClientObjectData() )
        SetClientObject( n, NULL );
    m_choice->Delete( n );
#endif
}

void wxComboBox::Clear()
{
    FreeData();
#if USE_HICOMBOBOX
    for ( CFIndex i = GetCount() - 1 ; i >= 0 ; ++ i )
        verify_noerr( HIComboBoxRemoveItemAtIndex( *m_peer, i ) );
    m_peer->SetData<CFStringRef>(kHIComboBoxEditTextPart,kControlEditTextCFStringTag,CFSTR(""));
#else
    m_choice->Clear();
#endif
}

int wxComboBox::GetSelection() const
{
#if USE_HICOMBOBOX
    return FindString( GetStringSelection() ) ;
#else
    return m_choice->GetSelection();
#endif
}

void wxComboBox::SetSelection(int n)
{
#if USE_HICOMBOBOX
    SetControl32BitValue( *m_peer , n + 1 ) ;
#else
    m_choice->SetSelection( n );

    if ( m_text != NULL )
    {
        m_text->SetValue( GetString( n ) );
    }
#endif
}

int wxComboBox::FindString(const wxString& s) const
{
#if USE_HICOMBOBOX
    for( int i = 0 ; i < GetCount() ; i++ )
    {
        if ( GetString( i ).IsSameAs(s, false) )
            return i ;
    }
    return wxNOT_FOUND ;
#else
    return m_choice->FindString( s );
#endif
}

wxString wxComboBox::GetString(int n) const
{
#if USE_HICOMBOBOX
    CFStringRef itemText;
    HIComboBoxCopyTextItemAtIndex( *m_peer, (CFIndex)n, &itemText );
    return wxMacCFStringHolder(itemText).AsString();
#else
    return m_choice->GetString( n );
#endif
}

wxString wxComboBox::GetStringSelection() const
{
#if USE_HICOMBOBOX
    return wxMacCFStringHolder(m_peer->GetData<CFStringRef>(kHIComboBoxEditTextPart,kControlEditTextCFStringTag)).AsString() ;
#else
    int sel = GetSelection ();
    if (sel > -1)
        return wxString(this->GetString (sel));
    else
        return wxEmptyString;
#endif
}

void wxComboBox::SetString(int n, const wxString& s)
{
#if USE_HICOMBOBOX
    verify_noerr ( HIComboBoxInsertTextItemAtIndex( *m_peer, (CFIndex) n,
        wxMacCFStringHolder(s, m_font.GetEncoding()) ) );
    verify_noerr ( HIComboBoxRemoveItemAtIndex( *m_peer, (CFIndex) n + 1 ) );
#else
    m_choice->SetString( n , s ) ;
#endif
}

bool wxComboBox::IsEditable() const
{
#if USE_HICOMBOBOX
    // TODO
    return !HasFlag(wxCB_READONLY);
#else
    return m_text != NULL && !HasFlag(wxCB_READONLY);
#endif
}

void wxComboBox::Undo()
{
#if USE_HICOMBOBOX
    // TODO
#else
    if (m_text != NULL)
        m_text->Undo();
#endif
}

void wxComboBox::Redo()
{
#if USE_HICOMBOBOX
    // TODO
#else
    if (m_text != NULL)
        m_text->Redo();
#endif
}

void wxComboBox::SelectAll()
{
#if USE_HICOMBOBOX
    // TODO
#else
    if (m_text != NULL)
        m_text->SelectAll();
#endif
}

bool wxComboBox::CanCopy() const
{
#if USE_HICOMBOBOX
    // TODO
    return false;
#else
    if (m_text != NULL)
        return m_text->CanCopy();
    else
        return false;
#endif
}

bool wxComboBox::CanCut() const
{
#if USE_HICOMBOBOX
    // TODO
    return false;
#else
    if (m_text != NULL)
        return m_text->CanCut();
    else
        return false;
#endif
}

bool wxComboBox::CanPaste() const
{
#if USE_HICOMBOBOX
    // TODO
    return false;
#else
    if (m_text != NULL)
        return m_text->CanPaste();
    else
        return false;
#endif
}

bool wxComboBox::CanUndo() const
{
#if USE_HICOMBOBOX
    // TODO
    return false;
#else
    if (m_text != NULL)
        return m_text->CanUndo();
    else
        return false;
#endif
}

bool wxComboBox::CanRedo() const
{
#if USE_HICOMBOBOX
    // TODO
    return false;
#else
    if (m_text != NULL)
        return m_text->CanRedo();
    else
        return false;
#endif
}

wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTREF WXUNUSED(event) )
{
    wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
    event.SetInt(GetSelection());
    event.SetEventObject(this);
    event.SetString(GetStringSelection());
    ProcessCommand(event);
    return noErr ;
}