src/gtk/combobox.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        combobox.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

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

#include "wx/combobox.h"

#if wxUSE_COMBOBOX

#include "wx/settings.h"
#include "wx/intl.h"

#include <gdk/gdk.h>
#include <gtk/gtk.h>

//-----------------------------------------------------------------------------
// idle system
//-----------------------------------------------------------------------------

extern void wxapp_install_idle_handler();
extern bool g_isIdle;

//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------

extern bool   g_blockEventsOnDrag;

//-----------------------------------------------------------------------------
// "select"
//-----------------------------------------------------------------------------

static void
gtk_combo_clicked_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
{
    if (g_isIdle) wxapp_install_idle_handler();

    if (!combo->m_hasVMT) return;

    if (g_blockEventsOnDrag) return;

    if (combo->m_alreadySent)
    {
        combo->m_alreadySent = FALSE;
        return;
    }

    combo->m_alreadySent = TRUE;

    wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
    event.SetInt( combo->GetSelection() );
    event.SetString( combo->GetStringSelection() );
    event.SetEventObject( combo );

    combo->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
//  "changed"
//-----------------------------------------------------------------------------

static void
gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
{
    if (g_isIdle) wxapp_install_idle_handler();

    if (!combo->m_hasVMT) return;

    wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
    event.SetString( combo->GetValue() );
    event.SetEventObject( combo );
    combo->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
// wxComboBox
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)

BEGIN_EVENT_TABLE(wxComboBox, wxControl)
    EVT_SIZE(wxComboBox::OnSize)
    EVT_CHAR(wxComboBox::OnChar)
END_EVENT_TABLE()

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_alreadySent = FALSE;
    m_needParent = TRUE;
    m_acceptsFocus = TRUE;

    if (!PreCreation( parent, pos, size ) ||
        !CreateBase( parent, id, pos, size, style, validator, name ))
    {
        wxFAIL_MSG( wxT("wxComboBox creation failed") );
        return FALSE;
    }

    m_widget = gtk_combo_new();

    // make it more useable
    gtk_combo_set_use_arrows_always(GTK_COMBO(m_widget), TRUE);

    GtkWidget *list = GTK_COMBO(m_widget)->list;

    for (int i = 0; i < n; i++)
    {
        /* don't send first event, which GTK sends aways when
           inserting the first item */
        m_alreadySent = TRUE;

        GtkWidget *list_item = gtk_list_item_new_with_label( choices[i].mbc_str() );

        m_clientDataList.Append( (wxObject*)NULL );
        m_clientObjectList.Append( (wxObject*)NULL );

        gtk_container_add( GTK_CONTAINER(list), list_item );

        gtk_signal_connect( GTK_OBJECT(list_item), "select",
           GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );

        gtk_widget_show( list_item );
    }

    m_parent->DoAddChild( this );

    PostCreation();

    ConnectWidget( GTK_COMBO(m_widget)->button );

    if (!value.IsNull()) SetValue( value );

    if (style & wxCB_READONLY)
        gtk_entry_set_editable( GTK_ENTRY( GTK_COMBO(m_widget)->entry ), FALSE );

    gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
      GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);

    wxSize size_best( DoGetBestSize() );
    wxSize new_size( size );
    if (new_size.x == -1)
        new_size.x = size_best.x;
    if (new_size.y == -1)
        new_size.y = size_best.y;
    if (new_size.y > size_best.y)
        new_size.y = size_best.y;
    if ((new_size.x != size.x) || (new_size.y != size.y))
        SetSize( new_size.x, new_size.y );

    SetBackgroundColour( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_WINDOW ) );
    SetForegroundColour( parent->GetForegroundColour() );

    Show( TRUE );

    return TRUE;
}

wxComboBox::~wxComboBox()
{
    wxNode *node = m_clientObjectList.First();
    while (node)
    {
        wxClientData *cd = (wxClientData*)node->Data();
        if (cd) delete cd;
        node = node->Next();
    }
    m_clientObjectList.Clear();

    m_clientDataList.Clear();
}

void wxComboBox::AppendCommon( const wxString &item )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkWidget *list = GTK_COMBO(m_widget)->list;

    GtkWidget *list_item = gtk_list_item_new_with_label( item.mbc_str() );

    gtk_container_add( GTK_CONTAINER(list), list_item );

    gtk_signal_connect( GTK_OBJECT(list_item), "select",
      GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );

    if (GTK_WIDGET_REALIZED(m_widget))
    {
        gtk_widget_realize( list_item );
        gtk_widget_realize( GTK_BIN(list_item)->child );

        if (m_widgetStyle) ApplyWidgetStyle();
    }

    gtk_widget_show( list_item );
}

void wxComboBox::Append( const wxString &item )
{
    m_clientDataList.Append( (wxObject*) NULL );
    m_clientObjectList.Append( (wxObject*) NULL );

    AppendCommon( item );
}

void wxComboBox::Append( const wxString &item, void *clientData )
{
    m_clientDataList.Append( (wxObject*) clientData );
    m_clientObjectList.Append( (wxObject*)NULL );

    AppendCommon( item );
}

void wxComboBox::Append( const wxString &item, wxClientData *clientData )
{
    m_clientDataList.Append( (wxObject*) NULL );
    m_clientObjectList.Append( (wxObject*) clientData );

    AppendCommon( item );
}

void wxComboBox::SetClientData( int n, void* clientData )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    wxNode *node = m_clientDataList.Nth( n );
    if (!node) return;

    node->SetData( (wxObject*) clientData );
}

void* wxComboBox::GetClientData( int n )
{
    wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );

    wxNode *node = m_clientDataList.Nth( n );
    if (!node) return NULL;

    return node->Data();
}

void wxComboBox::SetClientObject( int n, wxClientData* clientData )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    wxNode *node = m_clientObjectList.Nth( n );
    if (!node) return;

    wxClientData *cd = (wxClientData*) node->Data();
    if (cd) delete cd;

    node->SetData( (wxObject*) clientData );
}

wxClientData* wxComboBox::GetClientObject( int n )
{
    wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );

    wxNode *node = m_clientDataList.Nth( n );
    if (!node) return (wxClientData*) NULL;

    return (wxClientData*) node->Data();
}

void wxComboBox::Clear()
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkWidget *list = GTK_COMBO(m_widget)->list;
    gtk_list_clear_items( GTK_LIST(list), 0, Number() );

    wxNode *node = m_clientObjectList.First();
    while (node)
    {
        wxClientData *cd = (wxClientData*)node->Data();
        if (cd) delete cd;
        node = node->Next();
    }
    m_clientObjectList.Clear();

    m_clientDataList.Clear();
}

void wxComboBox::Delete( int n )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );

    GList *child = g_list_nth( listbox->children, n );

    if (!child)
    {
        wxFAIL_MSG(wxT("wrong index"));
        return;
    }

    GList *list = g_list_append( (GList*) NULL, child->data );
    gtk_list_remove_items( listbox, list );
    g_list_free( list );

    wxNode *node = m_clientObjectList.Nth( n );
    if (node)
    {
        wxClientData *cd = (wxClientData*)node->Data();
        if (cd) delete cd;
        m_clientObjectList.DeleteNode( node );
    }

    node = m_clientDataList.Nth( n );
    if (node)
    {
        m_clientDataList.DeleteNode( node );
    }
}

int wxComboBox::FindString( const wxString &item )
{
    wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );

    GtkWidget *list = GTK_COMBO(m_widget)->list;

    GList *child = GTK_LIST(list)->children;
    int count = 0;
    while (child)
    {
        GtkBin *bin = GTK_BIN( child->data );
        GtkLabel *label = GTK_LABEL( bin->child );
        if (item == wxString(label->label,*wxConvCurrent))
            return count;
        count++;
        child = child->next;
    }

    return wxNOT_FOUND;
}

int wxComboBox::GetSelection() const
{
    wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );

    GtkWidget *list = GTK_COMBO(m_widget)->list;

    GList *selection = GTK_LIST(list)->selection;
    if (selection)
    {
        GList *child = GTK_LIST(list)->children;
        int count = 0;
        while (child)
        {
            if (child->data == selection->data) return count;
            count++;
            child = child->next;
        }
    }

    return -1;
}

wxString wxComboBox::GetString( int n ) const
{
    wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );

    GtkWidget *list = GTK_COMBO(m_widget)->list;

    wxString str;
    GList *child = g_list_nth( GTK_LIST(list)->children, n );
    if (child)
    {
        GtkBin *bin = GTK_BIN( child->data );
        GtkLabel *label = GTK_LABEL( bin->child );
        str = wxString(label->label,*wxConvCurrent);
    }
    else
    {
        wxFAIL_MSG( wxT("wxComboBox: wrong index") );
    }

    return str;
}

wxString wxComboBox::GetStringSelection() const
{
    wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );

    GtkWidget *list = GTK_COMBO(m_widget)->list;

    GList *selection = GTK_LIST(list)->selection;
    if (selection)
    {
        GtkBin *bin = GTK_BIN( selection->data );
        wxString tmp = wxString(GTK_LABEL( bin->child )->label,*wxConvCurrent);
        return tmp;
    }

    wxFAIL_MSG( wxT("wxComboBox: no selection") );

    return wxT("");
}

int wxComboBox::Number() const
{
    wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );

    GtkWidget *list = GTK_COMBO(m_widget)->list;

    GList *child = GTK_LIST(list)->children;
    int count = 0;
    while (child) { count++; child = child->next; }
    return count;
}

void wxComboBox::SetSelection( int n )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    DisableEvents();

    GtkWidget *list = GTK_COMBO(m_widget)->list;
    gtk_list_select_item( GTK_LIST(list), n );

    EnableEvents();
}

void wxComboBox::SetStringSelection( const wxString &string )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    int res = FindString( string );
    if (res == -1) return;
    SetSelection( res );
}

wxString wxComboBox::GetValue() const
{
    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    wxString tmp = wxString(gtk_entry_get_text( GTK_ENTRY(entry) ),*wxConvCurrent);
    return tmp;
}

void wxComboBox::SetValue( const wxString& value )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    wxString tmp = wxT("");
    if (!value.IsNull()) tmp = value;
    gtk_entry_set_text( GTK_ENTRY(entry), tmp.mbc_str() );
}

void wxComboBox::Copy()
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
#if defined(__WXGTK13__) || (GTK_MINOR_VERSION > 0)
    gtk_editable_copy_clipboard( GTK_EDITABLE(entry) );
#else
    gtk_editable_copy_clipboard( GTK_EDITABLE(entry), 0 );
#endif
}

void wxComboBox::Cut()
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
#if defined(__WXGTK13__) || (GTK_MINOR_VERSION > 0)
    gtk_editable_cut_clipboard( GTK_EDITABLE(entry) );
#else
    gtk_editable_cut_clipboard( GTK_EDITABLE(entry), 0 );
#endif
}

void wxComboBox::Paste()
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
#if defined(__WXGTK13__) || (GTK_MINOR_VERSION > 0)
    gtk_editable_paste_clipboard( GTK_EDITABLE(entry) );
#else
    gtk_editable_paste_clipboard( GTK_EDITABLE(entry), 0 );
#endif
}

void wxComboBox::SetInsertionPoint( long pos )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
}

void wxComboBox::SetInsertionPointEnd()
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    SetInsertionPoint( -1 );
}

long wxComboBox::GetInsertionPoint() const
{
    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    return (long) GTK_EDITABLE(entry)->current_pos;
}

long wxComboBox::GetLastPosition() const
{
    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    int pos = GTK_ENTRY(entry)->text_length;
    return (long) pos-1;
}

void wxComboBox::Replace( long from, long to, const wxString& value )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
    // FIXME: not quite sure how to do this method right in multibyte mode

    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
    if (value.IsNull()) return;
    gint pos = (gint)to;
    gtk_editable_insert_text( GTK_EDITABLE(entry), value.mbc_str(), value.Length(), &pos );
}

void wxComboBox::Remove(long from, long to)
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );

    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
}

void wxComboBox::SetSelection( long from, long to )
{
    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
}

void wxComboBox::SetEditable( bool editable )
{
    GtkWidget *entry = GTK_COMBO(m_widget)->entry;
    gtk_entry_set_editable( GTK_ENTRY(entry), editable );
}

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

        if ( Number() == 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, GetId() );
            event.SetInt( 0 );
            event.SetString( value );
            event.SetEventObject( this );
            GetEventHandler()->ProcessEvent( event );
        }
        else
        {
            // add the item to the list if it's not there yet
            if ( FindString(value) == wxNOT_FOUND )
            {
                Append(value);

                // and generate the selected event for it
                wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
                event.SetInt( Number() - 1 );
                event.SetString( value );
                event.SetEventObject( this );
                GetEventHandler()->ProcessEvent( event );
            }
            //else: do nothing, this will open the listbox
        }
    }

    event.Skip();
}

void wxComboBox::DisableEvents()
{
    GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
    GList *child = list->children;
    while (child)
    {
        gtk_signal_disconnect_by_func( GTK_OBJECT(child->data),
          GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );

        child = child->next;
    }
}

void wxComboBox::EnableEvents()
{
    GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
    GList *child = list->children;
    while (child)
    {
        gtk_signal_connect( GTK_OBJECT(child->data), "select",
          GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );

        child = child->next;
    }
}

void wxComboBox::OnSize( wxSizeEvent &event )
{
    event.Skip();

#if 0
    int w = 21;
    gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );

    gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
    gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
#endif // 0
}

void wxComboBox::ApplyWidgetStyle()
{
    SetWidgetStyle();

//    gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
    gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
    gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );

    GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
    GList *child = list->children;
    while (child)
    {
        gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );

        GtkBin *bin = GTK_BIN(child->data);
        gtk_widget_set_style( bin->child, m_widgetStyle );

        child = child->next;
    }
}

GtkWidget* wxComboBox::GetConnectWidget()
{
    return GTK_COMBO(m_widget)->entry;
}

bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
{
    return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
             (window == GTK_COMBO(m_widget)->button->window ) );
}

wxSize wxComboBox::DoGetBestSize() const
{
    wxSize ret( wxControl::DoGetBestSize() );

    // we know better our horizontal extent: it depends on the longest string
    // in the combobox
    ret.x = 0;
    if ( m_widget )
    {
        GdkFont *font = m_font.GetInternalFont();

        wxCoord width;
        size_t count = Number();
        for ( size_t n = 0; n < count; n++ )
        {
            width = (wxCoord)gdk_string_width(font, GetString(n).mbc_str());
            if ( width > ret.x )
                ret.x = width;
        }
    }

    // empty combobox should have some reasonable default size too
    if ( ret.x < 100 )
        ret.x = 100;
    return ret;
}

#endif
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: combobox.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifdef __GNUG__
	11	#pragma implementation "combobox.h"
	12	#endif
	13
	14	#include "wx/combobox.h"
	15
	16	#if wxUSE_COMBOBOX
	17
	18	#include "wx/settings.h"
	19	#include "wx/intl.h"
	20
	21	#include <gdk/gdk.h>
	22	#include <gtk/gtk.h>
	23
	24	//-----------------------------------------------------------------------------
	25	// idle system
	26	//-----------------------------------------------------------------------------
	27
	28	extern void wxapp_install_idle_handler();
	29	extern bool g_isIdle;
	30
	31	//-----------------------------------------------------------------------------
	32	// data
	33	//-----------------------------------------------------------------------------
	34
	35	extern bool g_blockEventsOnDrag;
	36
	37	//-----------------------------------------------------------------------------
	38	// "select"
	39	//-----------------------------------------------------------------------------
	40
	41	static void
	42	gtk_combo_clicked_callback( GtkWidget WXUNUSED(widget), wxComboBox combo )
	43	{
	44	if (g_isIdle) wxapp_install_idle_handler();
	45
	46	if (!combo->m_hasVMT) return;
	47
	48	if (g_blockEventsOnDrag) return;
	49
	50	if (combo->m_alreadySent)
	51	{
	52	combo->m_alreadySent = FALSE;
	53	return;
	54	}
	55
	56	combo->m_alreadySent = TRUE;
	57
	58	wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
	59	event.SetInt( combo->GetSelection() );
	60	event.SetString( combo->GetStringSelection() );
	61	event.SetEventObject( combo );
	62
	63	combo->GetEventHandler()->ProcessEvent( event );
	64	}
	65
	66	//-----------------------------------------------------------------------------
	67	// "changed"
	68	//-----------------------------------------------------------------------------
	69
	70	static void
	71	gtk_text_changed_callback( GtkWidget WXUNUSED(widget), wxComboBox combo )
	72	{
	73	if (g_isIdle) wxapp_install_idle_handler();
	74
	75	if (!combo->m_hasVMT) return;
	76
	77	wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
	78	event.SetString( combo->GetValue() );
	79	event.SetEventObject( combo );
	80	combo->GetEventHandler()->ProcessEvent( event );
	81	}
	82
	83	//-----------------------------------------------------------------------------
	84	// wxComboBox
	85	//-----------------------------------------------------------------------------
	86
	87	IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
	88
	89	BEGIN_EVENT_TABLE(wxComboBox, wxControl)
	90	EVT_SIZE(wxComboBox::OnSize)
	91	EVT_CHAR(wxComboBox::OnChar)
	92	END_EVENT_TABLE()
	93
	94	bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
	95	const wxPoint& pos, const wxSize& size,
	96	int n, const wxString choices[],
	97	long style, const wxValidator& validator,
	98	const wxString& name )
	99	{
	100	m_alreadySent = FALSE;
	101	m_needParent = TRUE;
	102	m_acceptsFocus = TRUE;
	103
	104	if (!PreCreation( parent, pos, size ) \|\|
	105	!CreateBase( parent, id, pos, size, style, validator, name ))
	106	{
	107	wxFAIL_MSG( wxT("wxComboBox creation failed") );
	108	return FALSE;
	109	}
	110
	111	m_widget = gtk_combo_new();
	112
	113	// make it more useable
	114	gtk_combo_set_use_arrows_always(GTK_COMBO(m_widget), TRUE);
	115
	116	GtkWidget *list = GTK_COMBO(m_widget)->list;
	117
	118	for (int i = 0; i < n; i++)
	119	{
	120	/* don't send first event, which GTK sends aways when
	121	inserting the first item */
	122	m_alreadySent = TRUE;
	123
	124	GtkWidget *list_item = gtk_list_item_new_with_label( choices[i].mbc_str() );
	125
	126	m_clientDataList.Append( (wxObject*)NULL );
	127	m_clientObjectList.Append( (wxObject*)NULL );
	128
	129	gtk_container_add( GTK_CONTAINER(list), list_item );
	130
	131	gtk_signal_connect( GTK_OBJECT(list_item), "select",
	132	GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
	133
	134	gtk_widget_show( list_item );
	135	}
	136
	137	m_parent->DoAddChild( this );
	138
	139	PostCreation();
	140
	141	ConnectWidget( GTK_COMBO(m_widget)->button );
	142
	143	if (!value.IsNull()) SetValue( value );
	144
	145	if (style & wxCB_READONLY)
	146	gtk_entry_set_editable( GTK_ENTRY( GTK_COMBO(m_widget)->entry ), FALSE );
	147
	148	gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
	149	GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
	150
	151	wxSize size_best( DoGetBestSize() );
	152	wxSize new_size( size );
	153	if (new_size.x == -1)
	154	new_size.x = size_best.x;
	155	if (new_size.y == -1)
	156	new_size.y = size_best.y;
	157	if (new_size.y > size_best.y)
	158	new_size.y = size_best.y;
	159	if ((new_size.x != size.x) \|\| (new_size.y != size.y))
	160	SetSize( new_size.x, new_size.y );
	161
	162	SetBackgroundColour( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_WINDOW ) );
	163	SetForegroundColour( parent->GetForegroundColour() );
	164
	165	Show( TRUE );
	166
	167	return TRUE;
	168	}
	169
	170	wxComboBox::~wxComboBox()
	171	{
	172	wxNode *node = m_clientObjectList.First();
	173	while (node)
	174	{
	175	wxClientData cd = (wxClientData)node->Data();
	176	if (cd) delete cd;
	177	node = node->Next();
	178	}
	179	m_clientObjectList.Clear();
	180
	181	m_clientDataList.Clear();
	182	}
	183
	184	void wxComboBox::AppendCommon( const wxString &item )
	185	{
	186	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	187
	188	GtkWidget *list = GTK_COMBO(m_widget)->list;
	189
	190	GtkWidget *list_item = gtk_list_item_new_with_label( item.mbc_str() );
	191
	192	gtk_container_add( GTK_CONTAINER(list), list_item );
	193
	194	gtk_signal_connect( GTK_OBJECT(list_item), "select",
	195	GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
	196
	197	if (GTK_WIDGET_REALIZED(m_widget))
	198	{
	199	gtk_widget_realize( list_item );
	200	gtk_widget_realize( GTK_BIN(list_item)->child );
	201
	202	if (m_widgetStyle) ApplyWidgetStyle();
	203	}
	204
	205	gtk_widget_show( list_item );
	206	}
	207
	208	void wxComboBox::Append( const wxString &item )
	209	{
	210	m_clientDataList.Append( (wxObject*) NULL );
	211	m_clientObjectList.Append( (wxObject*) NULL );
	212
	213	AppendCommon( item );
	214	}
	215
	216	void wxComboBox::Append( const wxString &item, void *clientData )
	217	{
	218	m_clientDataList.Append( (wxObject*) clientData );
	219	m_clientObjectList.Append( (wxObject*)NULL );
	220
	221	AppendCommon( item );
	222	}
	223
	224	void wxComboBox::Append( const wxString &item, wxClientData *clientData )
	225	{
	226	m_clientDataList.Append( (wxObject*) NULL );
	227	m_clientObjectList.Append( (wxObject*) clientData );
	228
	229	AppendCommon( item );
	230	}
	231
	232	void wxComboBox::SetClientData( int n, void* clientData )
	233	{
	234	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	235
	236	wxNode *node = m_clientDataList.Nth( n );
	237	if (!node) return;
	238
	239	node->SetData( (wxObject*) clientData );
	240	}
	241
	242	void* wxComboBox::GetClientData( int n )
	243	{
	244	wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
	245
	246	wxNode *node = m_clientDataList.Nth( n );
	247	if (!node) return NULL;
	248
	249	return node->Data();
	250	}
	251
	252	void wxComboBox::SetClientObject( int n, wxClientData* clientData )
	253	{
	254	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	255
	256	wxNode *node = m_clientObjectList.Nth( n );
	257	if (!node) return;
	258
	259	wxClientData cd = (wxClientData) node->Data();
	260	if (cd) delete cd;
	261
	262	node->SetData( (wxObject*) clientData );
	263	}
	264
	265	wxClientData* wxComboBox::GetClientObject( int n )
	266	{
	267	wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
	268
	269	wxNode *node = m_clientDataList.Nth( n );
	270	if (!node) return (wxClientData*) NULL;
	271
	272	return (wxClientData*) node->Data();
	273	}
	274
	275	void wxComboBox::Clear()
	276	{
	277	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	278
	279	GtkWidget *list = GTK_COMBO(m_widget)->list;
	280	gtk_list_clear_items( GTK_LIST(list), 0, Number() );
	281
	282	wxNode *node = m_clientObjectList.First();
	283	while (node)
	284	{
	285	wxClientData cd = (wxClientData)node->Data();
	286	if (cd) delete cd;
	287	node = node->Next();
	288	}
	289	m_clientObjectList.Clear();
	290
	291	m_clientDataList.Clear();
	292	}
	293
	294	void wxComboBox::Delete( int n )
	295	{
	296	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	297
	298	GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
	299
	300	GList *child = g_list_nth( listbox->children, n );
	301
	302	if (!child)
	303	{
	304	wxFAIL_MSG(wxT("wrong index"));
	305	return;
	306	}
	307
	308	GList list = g_list_append( (GList) NULL, child->data );
	309	gtk_list_remove_items( listbox, list );
	310	g_list_free( list );
	311
	312	wxNode *node = m_clientObjectList.Nth( n );
	313	if (node)
	314	{
	315	wxClientData cd = (wxClientData)node->Data();
	316	if (cd) delete cd;
	317	m_clientObjectList.DeleteNode( node );
	318	}
	319
	320	node = m_clientDataList.Nth( n );
	321	if (node)
	322	{
	323	m_clientDataList.DeleteNode( node );
	324	}
	325	}
	326
	327	int wxComboBox::FindString( const wxString &item )
	328	{
	329	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
	330
	331	GtkWidget *list = GTK_COMBO(m_widget)->list;
	332
	333	GList *child = GTK_LIST(list)->children;
	334	int count = 0;
	335	while (child)
	336	{
	337	GtkBin *bin = GTK_BIN( child->data );
	338	GtkLabel *label = GTK_LABEL( bin->child );
	339	if (item == wxString(label->label,*wxConvCurrent))
	340	return count;
	341	count++;
	342	child = child->next;
	343	}
	344
	345	return wxNOT_FOUND;
	346	}
	347
	348	int wxComboBox::GetSelection() const
	349	{
	350	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
	351
	352	GtkWidget *list = GTK_COMBO(m_widget)->list;
	353
	354	GList *selection = GTK_LIST(list)->selection;
	355	if (selection)
	356	{
	357	GList *child = GTK_LIST(list)->children;
	358	int count = 0;
	359	while (child)
	360	{
	361	if (child->data == selection->data) return count;
	362	count++;
	363	child = child->next;
	364	}
	365	}
	366
	367	return -1;
	368	}
	369
	370	wxString wxComboBox::GetString( int n ) const
	371	{
	372	wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
	373
	374	GtkWidget *list = GTK_COMBO(m_widget)->list;
	375
	376	wxString str;
	377	GList *child = g_list_nth( GTK_LIST(list)->children, n );
	378	if (child)
	379	{
	380	GtkBin *bin = GTK_BIN( child->data );
	381	GtkLabel *label = GTK_LABEL( bin->child );
	382	str = wxString(label->label,*wxConvCurrent);
	383	}
	384	else
	385	{
	386	wxFAIL_MSG( wxT("wxComboBox: wrong index") );
	387	}
	388
	389	return str;
	390	}
	391
	392	wxString wxComboBox::GetStringSelection() const
	393	{
	394	wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
	395
	396	GtkWidget *list = GTK_COMBO(m_widget)->list;
	397
	398	GList *selection = GTK_LIST(list)->selection;
	399	if (selection)
	400	{
	401	GtkBin *bin = GTK_BIN( selection->data );
	402	wxString tmp = wxString(GTK_LABEL( bin->child )->label,*wxConvCurrent);
	403	return tmp;
	404	}
	405
	406	wxFAIL_MSG( wxT("wxComboBox: no selection") );
	407
	408	return wxT("");
	409	}
	410
	411	int wxComboBox::Number() const
	412	{
	413	wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
	414
	415	GtkWidget *list = GTK_COMBO(m_widget)->list;
	416
	417	GList *child = GTK_LIST(list)->children;
	418	int count = 0;
	419	while (child) { count++; child = child->next; }
	420	return count;
	421	}
	422
	423	void wxComboBox::SetSelection( int n )
	424	{
	425	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	426
	427	DisableEvents();
	428
	429	GtkWidget *list = GTK_COMBO(m_widget)->list;
	430	gtk_list_select_item( GTK_LIST(list), n );
	431
	432	EnableEvents();
	433	}
	434
	435	void wxComboBox::SetStringSelection( const wxString &string )
	436	{
	437	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	438
	439	int res = FindString( string );
	440	if (res == -1) return;
	441	SetSelection( res );
	442	}
	443
	444	wxString wxComboBox::GetValue() const
	445	{
	446	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	447	wxString tmp = wxString(gtk_entry_get_text( GTK_ENTRY(entry) ),*wxConvCurrent);
	448	return tmp;
	449	}
	450
	451	void wxComboBox::SetValue( const wxString& value )
	452	{
	453	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	454
	455	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	456	wxString tmp = wxT("");
	457	if (!value.IsNull()) tmp = value;
	458	gtk_entry_set_text( GTK_ENTRY(entry), tmp.mbc_str() );
	459	}
	460
	461	void wxComboBox::Copy()
	462	{
	463	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	464
	465	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	466	#if defined(__WXGTK13__) \|\| (GTK_MINOR_VERSION > 0)
	467	gtk_editable_copy_clipboard( GTK_EDITABLE(entry) );
	468	#else
	469	gtk_editable_copy_clipboard( GTK_EDITABLE(entry), 0 );
	470	#endif
	471	}
	472
	473	void wxComboBox::Cut()
	474	{
	475	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	476
	477	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	478	#if defined(__WXGTK13__) \|\| (GTK_MINOR_VERSION > 0)
	479	gtk_editable_cut_clipboard( GTK_EDITABLE(entry) );
	480	#else
	481	gtk_editable_cut_clipboard( GTK_EDITABLE(entry), 0 );
	482	#endif
	483	}
	484
	485	void wxComboBox::Paste()
	486	{
	487	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	488
	489	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	490	#if defined(__WXGTK13__) \|\| (GTK_MINOR_VERSION > 0)
	491	gtk_editable_paste_clipboard( GTK_EDITABLE(entry) );
	492	#else
	493	gtk_editable_paste_clipboard( GTK_EDITABLE(entry), 0 );
	494	#endif
	495	}
	496
	497	void wxComboBox::SetInsertionPoint( long pos )
	498	{
	499	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	500
	501	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	502	gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
	503	}
	504
	505	void wxComboBox::SetInsertionPointEnd()
	506	{
	507	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	508
	509	SetInsertionPoint( -1 );
	510	}
	511
	512	long wxComboBox::GetInsertionPoint() const
	513	{
	514	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	515	return (long) GTK_EDITABLE(entry)->current_pos;
	516	}
	517
	518	long wxComboBox::GetLastPosition() const
	519	{
	520	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	521	int pos = GTK_ENTRY(entry)->text_length;
	522	return (long) pos-1;
	523	}
	524
	525	void wxComboBox::Replace( long from, long to, const wxString& value )
	526	{
	527	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	528	// FIXME: not quite sure how to do this method right in multibyte mode
	529
	530	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	531	gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
	532	if (value.IsNull()) return;
	533	gint pos = (gint)to;
	534	gtk_editable_insert_text( GTK_EDITABLE(entry), value.mbc_str(), value.Length(), &pos );
	535	}
	536
	537	void wxComboBox::Remove(long from, long to)
	538	{
	539	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	540
	541	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	542	gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
	543	}
	544
	545	void wxComboBox::SetSelection( long from, long to )
	546	{
	547	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	548	gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
	549	}
	550
	551	void wxComboBox::SetEditable( bool editable )
	552	{
	553	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	554	gtk_entry_set_editable( GTK_ENTRY(entry), editable );
	555	}
	556
	557	void wxComboBox::OnChar( wxKeyEvent &event )
	558	{
	559	if ( event.KeyCode() == WXK_RETURN )
	560	{
	561	wxString value = GetValue();
	562
	563	if ( Number() == 0 )
	564	{
	565	// make Enter generate "selected" event if there is only one item
	566	// in the combobox - without it, it's impossible to select it at
	567	// all!
	568	wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
	569	event.SetInt( 0 );
	570	event.SetString( value );
	571	event.SetEventObject( this );
	572	GetEventHandler()->ProcessEvent( event );
	573	}
	574	else
	575	{
	576	// add the item to the list if it's not there yet
	577	if ( FindString(value) == wxNOT_FOUND )
	578	{
	579	Append(value);
	580
	581	// and generate the selected event for it
	582	wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
	583	event.SetInt( Number() - 1 );
	584	event.SetString( value );
	585	event.SetEventObject( this );
	586	GetEventHandler()->ProcessEvent( event );
	587	}
	588	//else: do nothing, this will open the listbox
	589	}
	590	}
	591
	592	event.Skip();
	593	}
	594
	595	void wxComboBox::DisableEvents()
	596	{
	597	GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
	598	GList *child = list->children;
	599	while (child)
	600	{
	601	gtk_signal_disconnect_by_func( GTK_OBJECT(child->data),
	602	GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
	603
	604	child = child->next;
	605	}
	606	}
	607
	608	void wxComboBox::EnableEvents()
	609	{
	610	GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
	611	GList *child = list->children;
	612	while (child)
	613	{
	614	gtk_signal_connect( GTK_OBJECT(child->data), "select",
	615	GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
	616
	617	child = child->next;
	618	}
	619	}
	620
	621	void wxComboBox::OnSize( wxSizeEvent &event )
	622	{
	623	event.Skip();
	624
	625	#if 0
	626	int w = 21;
	627	gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
	628
	629	gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
	630	gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
	631	#endif // 0
	632	}
	633
	634	void wxComboBox::ApplyWidgetStyle()
	635	{
	636	SetWidgetStyle();
	637
	638	// gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
	639	gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
	640	gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
	641
	642	GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
	643	GList *child = list->children;
	644	while (child)
	645	{
	646	gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
	647
	648	GtkBin *bin = GTK_BIN(child->data);
	649	gtk_widget_set_style( bin->child, m_widgetStyle );
	650
	651	child = child->next;
	652	}
	653	}
	654
	655	GtkWidget* wxComboBox::GetConnectWidget()
	656	{
	657	return GTK_COMBO(m_widget)->entry;
	658	}
	659
	660	bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
	661	{
	662	return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) \|\|
	663	(window == GTK_COMBO(m_widget)->button->window ) );
	664	}
	665
	666	wxSize wxComboBox::DoGetBestSize() const
	667	{
	668	wxSize ret( wxControl::DoGetBestSize() );
	669
	670	// we know better our horizontal extent: it depends on the longest string
	671	// in the combobox
	672	ret.x = 0;
	673	if ( m_widget )
	674	{
	675	GdkFont *font = m_font.GetInternalFont();
	676
	677	wxCoord width;
	678	size_t count = Number();
	679	for ( size_t n = 0; n < count; n++ )
	680	{
	681	width = (wxCoord)gdk_string_width(font, GetString(n).mbc_str());
	682	if ( width > ret.x )
	683	ret.x = width;
	684	}
	685	}
	686
	687	// empty combobox should have some reasonable default size too
	688	if ( ret.x < 100 )
	689	ret.x = 100;
	690	return ret;
	691	}
	692
	693	#endif