src/gtk1/choice.cpp

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


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

#include "wx/defs.h"

#if wxUSE_CHOICE

#include "wx/choice.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;

//-----------------------------------------------------------------------------
// "activate"
//-----------------------------------------------------------------------------

static void gtk_choice_clicked_callback( GtkWidget *WXUNUSED(widget), wxChoice *choice )
{
    if (g_isIdle)
      wxapp_install_idle_handler();

    if (!choice->m_hasVMT) return;

    if (g_blockEventsOnDrag) return;

    wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() );
    int n = choice->GetSelection();

    event.SetInt( n );
    event.SetString( choice->GetStringSelection() );
    event.SetEventObject(choice);

    if ( choice->HasClientObjectData() )
        event.SetClientObject( choice->GetClientObject(n) );
    else if ( choice->HasClientUntypedData() )
        event.SetClientData( choice->GetClientData(n) );

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

//-----------------------------------------------------------------------------
// wxChoice
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxChoice,wxControl)

wxChoice::wxChoice()
{
    m_strings = (wxSortedArrayString *)NULL;
}

bool wxChoice::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_needParent = TRUE;
#if (GTK_MINOR_VERSION > 0)
    m_acceptsFocus = TRUE;
#endif

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

    m_widget = gtk_option_menu_new();

    if ( style & wxCB_SORT )
    {
        // if our m_strings != NULL, DoAppend() will check for it and insert
        // items in the correct order
        m_strings = new wxSortedArrayString;
    }

    GtkWidget *menu = gtk_menu_new();

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

    gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );

    m_parent->DoAddChild( this );

    PostCreation();

    SetFont( parent->GetFont() );

    SetBestSize(size);

    SetBackgroundColour( parent->GetBackgroundColour() );
    SetForegroundColour( parent->GetForegroundColour() );

    Show( TRUE );

    return TRUE;
}

wxChoice::~wxChoice()
{
    Clear();

    delete m_strings;
}

int wxChoice::DoAppend( const wxString &item )
{
    wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );

    GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );

    return GtkAppendHelper(menu, item);
}

void wxChoice::DoSetItemClientData( int n, void* clientData )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );

    wxNode *node = m_clientList.Nth( n );
    wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientData") );

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

void* wxChoice::DoGetItemClientData( int n ) const
{
    wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid choice control") );

    wxNode *node = m_clientList.Nth( n );
    wxCHECK_MSG( node, NULL, wxT("invalid index in wxChoice::DoGetItemClientData") );

    return node->Data();
}

void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );

    wxNode *node = m_clientList.Nth( n );
    wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientObject") );

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

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

wxClientData* wxChoice::DoGetItemClientObject( int n ) const
{
    wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid choice control") );

    wxNode *node = m_clientList.Nth( n );
    wxCHECK_MSG( node, (wxClientData *)NULL,
                 wxT("invalid index in wxChoice::DoGetItemClientObject") );

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

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

    gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) );
    GtkWidget *menu = gtk_menu_new();
    gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );

    if ( HasClientObjectData() )
    {
        // destroy the data (due to Robert's idea of using wxList<wxObject>
        // and not wxList<wxClientData> we can't just say
        // m_clientList.DeleteContents(TRUE) - this would crash!
        wxNode *node = m_clientList.First();
        while ( node )
        {
            delete (wxClientData *)node->Data();
            node = node->Next();
        }
    }
    m_clientList.Clear();

    if ( m_strings )
        m_strings->Clear();
}

void wxChoice::Delete( int WXUNUSED(n) )
{
    wxFAIL_MSG( wxT("wxChoice:Delete not implemented") );
}

int wxChoice::FindString( const wxString &string ) const
{
    wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );

    // If you read this code once and you think you understand
    // it, then you are very wrong. Robert Roebling.

    GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
    int count = 0;
    GList *child = menu_shell->children;
    while (child)
    {
        GtkBin *bin = GTK_BIN( child->data );
        GtkLabel *label = (GtkLabel *) NULL;
        if (bin->child) label = GTK_LABEL(bin->child);
        if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );

        wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );

       if (string == wxString(label->label,*wxConvCurrent))
           return count;

       child = child->next;
       count++;
    }

    return -1;
}

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

    GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
    int count = 0;
    GList *child = menu_shell->children;
    while (child)
    {
        GtkBin *bin = GTK_BIN( child->data );
        if (!bin->child) return count;
        child = child->next;
        count++;
    }

    return -1;
}

void wxChoice::SetString( int WXUNUSED(n), const wxString& WXUNUSED(string) )
{
    wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );

    wxFAIL_MSG(wxT("not implemented"));
}

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

    GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
    int count = 0;
    GList *child = menu_shell->children;
    while (child)
    {
        GtkBin *bin = GTK_BIN( child->data );
        if (count == n)
        {
            GtkLabel *label = (GtkLabel *) NULL;
            if (bin->child) label = GTK_LABEL(bin->child);
            if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );

            wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );

            return wxString(label->label,*wxConvCurrent);
        }
        child = child->next;
        count++;
    }

    wxFAIL_MSG( wxT("wxChoice: invalid index in GetString()") );

    return wxT("");
}

int wxChoice::GetCount() const
{
    wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid choice") );

    GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
    int count = 0;
    GList *child = menu_shell->children;
    while (child)
    {
        count++;
        child = child->next;
    }
    return count;
}

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

    int tmp = n;
    gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
}

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

    GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );

    gtk_widget_set_style( m_widget, m_widgetStyle );
    gtk_widget_set_style( GTK_WIDGET( menu_shell ), m_widgetStyle );

    GList *child = menu_shell->children;
    while (child)
    {
        gtk_widget_set_style( GTK_WIDGET( child->data ), m_widgetStyle );

        GtkBin *bin = GTK_BIN( child->data );
        GtkWidget *label = (GtkWidget *) NULL;
        if (bin->child) label = bin->child;
        if (!label) label = GTK_BUTTON(m_widget)->child;

        gtk_widget_set_style( label, m_widgetStyle );

        child = child->next;
    }
}

size_t wxChoice::GtkAppendHelper(GtkWidget *menu, const wxString& item)
{
    GtkWidget *menu_item = gtk_menu_item_new_with_label( item.mbc_str() );

    size_t index;
    if ( m_strings )
    {
        // sorted control, need to insert at the correct index
        index = m_strings->Add(item);

        gtk_menu_insert( GTK_MENU(menu), menu_item, index );

        if ( index )
        {
            m_clientList.Insert( m_clientList.Item(index - 1),
                                 (wxObject*) NULL );
        }
        else
        {
            m_clientList.Insert( (wxObject*) NULL );
        }
    }
    else
    {
        // normal control, just append
        gtk_menu_append( GTK_MENU(menu), menu_item );

        m_clientList.Append( (wxObject*) NULL );

        // don't call wxChoice::GetCount() from here because it doesn't work
        // if we're called from ctor (and GtkMenuShell is still NULL)
        index = m_clientList.GetCount() - 1;
    }

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

        if (m_widgetStyle) ApplyWidgetStyle();
    }

    gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
      GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );

    gtk_widget_show( menu_item );

    // return the index of the item in the control
    return index;
}

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

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

        wxCoord width;
        size_t count = GetCount();
        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;
        }

        // add extra for the choice "=" button

        // VZ: I don't know how to get the right value, it seems to be in
        //     GtkOptionMenuProps struct from gtkoptionmenu.c but we can't get
        //     to it - maybe we can use gtk_option_menu_size_request() for this
        //     somehow?
        //
        //     This default value works only for the default GTK+ theme (i.e.
        //     no theme at all) (FIXME)
        static const int widthChoiceIndicator = 35;
        ret.x += widthChoiceIndicator;
    }

    // but not less than the minimal width
    if ( ret.x < 80 )
        ret.x = 80;

    ret.y = 16 + gdk_char_height( m_widget->style->font, 'H' );
    return ret;
}

#endif // wxUSE_CHOICE
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: choice.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10
	11	#ifdef __GNUG__
	12	#pragma implementation "choice.h"
	13	#endif
	14
	15	#include "wx/defs.h"
	16
	17	#if wxUSE_CHOICE
	18
	19	#include "wx/choice.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	// "activate"
	39	//-----------------------------------------------------------------------------
	40
	41	static void gtk_choice_clicked_callback( GtkWidget WXUNUSED(widget), wxChoice choice )
	42	{
	43	if (g_isIdle)
	44	wxapp_install_idle_handler();
	45
	46	if (!choice->m_hasVMT) return;
	47
	48	if (g_blockEventsOnDrag) return;
	49
	50	wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() );
	51	int n = choice->GetSelection();
	52
	53	event.SetInt( n );
	54	event.SetString( choice->GetStringSelection() );
	55	event.SetEventObject(choice);
	56
	57	if ( choice->HasClientObjectData() )
	58	event.SetClientObject( choice->GetClientObject(n) );
	59	else if ( choice->HasClientUntypedData() )
	60	event.SetClientData( choice->GetClientData(n) );
	61
	62	choice->GetEventHandler()->ProcessEvent(event);
	63	}
	64
	65	//-----------------------------------------------------------------------------
	66	// wxChoice
	67	//-----------------------------------------------------------------------------
	68
	69	IMPLEMENT_DYNAMIC_CLASS(wxChoice,wxControl)
	70
	71	wxChoice::wxChoice()
	72	{
	73	m_strings = (wxSortedArrayString *)NULL;
	74	}
	75
	76	bool wxChoice::Create( wxWindow *parent, wxWindowID id,
	77	const wxPoint &pos, const wxSize &size,
	78	int n, const wxString choices[],
	79	long style, const wxValidator& validator, const wxString &name )
	80	{
	81	m_needParent = TRUE;
	82	#if (GTK_MINOR_VERSION > 0)
	83	m_acceptsFocus = TRUE;
	84	#endif
	85
	86	if (!PreCreation( parent, pos, size ) \|\|
	87	!CreateBase( parent, id, pos, size, style, validator, name ))
	88	{
	89	wxFAIL_MSG( wxT("wxChoice creation failed") );
	90	return FALSE;
	91	}
	92
	93	m_widget = gtk_option_menu_new();
	94
	95	if ( style & wxCB_SORT )
	96	{
	97	// if our m_strings != NULL, DoAppend() will check for it and insert
	98	// items in the correct order
	99	m_strings = new wxSortedArrayString;
	100	}
	101
	102	GtkWidget *menu = gtk_menu_new();
	103
	104	for (int i = 0; i < n; i++)
	105	{
	106	GtkAppendHelper(menu, choices[i]);
	107	}
	108
	109	gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
	110
	111	m_parent->DoAddChild( this );
	112
	113	PostCreation();
	114
	115	SetFont( parent->GetFont() );
	116
	117	SetBestSize(size);
	118
	119	SetBackgroundColour( parent->GetBackgroundColour() );
	120	SetForegroundColour( parent->GetForegroundColour() );
	121
	122	Show( TRUE );
	123
	124	return TRUE;
	125	}
	126
	127	wxChoice::~wxChoice()
	128	{
	129	Clear();
	130
	131	delete m_strings;
	132	}
	133
	134	int wxChoice::DoAppend( const wxString &item )
	135	{
	136	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );
	137
	138	GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
	139
	140	return GtkAppendHelper(menu, item);
	141	}
	142
	143	void wxChoice::DoSetItemClientData( int n, void* clientData )
	144	{
	145	wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );
	146
	147	wxNode *node = m_clientList.Nth( n );
	148	wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientData") );
	149
	150	node->SetData( (wxObject*) clientData );
	151	}
	152
	153	void* wxChoice::DoGetItemClientData( int n ) const
	154	{
	155	wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid choice control") );
	156
	157	wxNode *node = m_clientList.Nth( n );
	158	wxCHECK_MSG( node, NULL, wxT("invalid index in wxChoice::DoGetItemClientData") );
	159
	160	return node->Data();
	161	}
	162
	163	void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
	164	{
	165	wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );
	166
	167	wxNode *node = m_clientList.Nth( n );
	168	wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientObject") );
	169
	170	wxClientData cd = (wxClientData) node->Data();
	171	delete cd;
	172
	173	node->SetData( (wxObject*) clientData );
	174	}
	175
	176	wxClientData* wxChoice::DoGetItemClientObject( int n ) const
	177	{
	178	wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid choice control") );
	179
	180	wxNode *node = m_clientList.Nth( n );
	181	wxCHECK_MSG( node, (wxClientData *)NULL,
	182	wxT("invalid index in wxChoice::DoGetItemClientObject") );
	183
	184	return (wxClientData*) node->Data();
	185	}
	186
	187	void wxChoice::Clear()
	188	{
	189	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	190
	191	gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) );
	192	GtkWidget *menu = gtk_menu_new();
	193	gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
	194
	195	if ( HasClientObjectData() )
	196	{
	197	// destroy the data (due to Robert's idea of using wxList<wxObject>
	198	// and not wxList<wxClientData> we can't just say
	199	// m_clientList.DeleteContents(TRUE) - this would crash!
	200	wxNode *node = m_clientList.First();
	201	while ( node )
	202	{
	203	delete (wxClientData *)node->Data();
	204	node = node->Next();
	205	}
	206	}
	207	m_clientList.Clear();
	208
	209	if ( m_strings )
	210	m_strings->Clear();
	211	}
	212
	213	void wxChoice::Delete( int WXUNUSED(n) )
	214	{
	215	wxFAIL_MSG( wxT("wxChoice:Delete not implemented") );
	216	}
	217
	218	int wxChoice::FindString( const wxString &string ) const
	219	{
	220	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
	221
	222	// If you read this code once and you think you understand
	223	// it, then you are very wrong. Robert Roebling.
	224
	225	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	226	int count = 0;
	227	GList *child = menu_shell->children;
	228	while (child)
	229	{
	230	GtkBin *bin = GTK_BIN( child->data );
	231	GtkLabel label = (GtkLabel ) NULL;
	232	if (bin->child) label = GTK_LABEL(bin->child);
	233	if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
	234
	235	wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
	236
	237	if (string == wxString(label->label,*wxConvCurrent))
	238	return count;
	239
	240	child = child->next;
	241	count++;
	242	}
	243
	244	return -1;
	245	}
	246
	247	int wxChoice::GetSelection() const
	248	{
	249	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
	250
	251	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	252	int count = 0;
	253	GList *child = menu_shell->children;
	254	while (child)
	255	{
	256	GtkBin *bin = GTK_BIN( child->data );
	257	if (!bin->child) return count;
	258	child = child->next;
	259	count++;
	260	}
	261
	262	return -1;
	263	}
	264
	265	void wxChoice::SetString( int WXUNUSED(n), const wxString& WXUNUSED(string) )
	266	{
	267	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	268
	269	wxFAIL_MSG(wxT("not implemented"));
	270	}
	271
	272	wxString wxChoice::GetString( int n ) const
	273	{
	274	wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid choice") );
	275
	276	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	277	int count = 0;
	278	GList *child = menu_shell->children;
	279	while (child)
	280	{
	281	GtkBin *bin = GTK_BIN( child->data );
	282	if (count == n)
	283	{
	284	GtkLabel label = (GtkLabel ) NULL;
	285	if (bin->child) label = GTK_LABEL(bin->child);
	286	if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
	287
	288	wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
	289
	290	return wxString(label->label,*wxConvCurrent);
	291	}
	292	child = child->next;
	293	count++;
	294	}
	295
	296	wxFAIL_MSG( wxT("wxChoice: invalid index in GetString()") );
	297
	298	return wxT("");
	299	}
	300
	301	int wxChoice::GetCount() const
	302	{
	303	wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid choice") );
	304
	305	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	306	int count = 0;
	307	GList *child = menu_shell->children;
	308	while (child)
	309	{
	310	count++;
	311	child = child->next;
	312	}
	313	return count;
	314	}
	315
	316	void wxChoice::SetSelection( int n )
	317	{
	318	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	319
	320	int tmp = n;
	321	gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
	322	}
	323
	324	void wxChoice::ApplyWidgetStyle()
	325	{
	326	SetWidgetStyle();
	327
	328	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	329
	330	gtk_widget_set_style( m_widget, m_widgetStyle );
	331	gtk_widget_set_style( GTK_WIDGET( menu_shell ), m_widgetStyle );
	332
	333	GList *child = menu_shell->children;
	334	while (child)
	335	{
	336	gtk_widget_set_style( GTK_WIDGET( child->data ), m_widgetStyle );
	337
	338	GtkBin *bin = GTK_BIN( child->data );
	339	GtkWidget label = (GtkWidget ) NULL;
	340	if (bin->child) label = bin->child;
	341	if (!label) label = GTK_BUTTON(m_widget)->child;
	342
	343	gtk_widget_set_style( label, m_widgetStyle );
	344
	345	child = child->next;
	346	}
	347	}
	348
	349	size_t wxChoice::GtkAppendHelper(GtkWidget *menu, const wxString& item)
	350	{
	351	GtkWidget *menu_item = gtk_menu_item_new_with_label( item.mbc_str() );
	352
	353	size_t index;
	354	if ( m_strings )
	355	{
	356	// sorted control, need to insert at the correct index
	357	index = m_strings->Add(item);
	358
	359	gtk_menu_insert( GTK_MENU(menu), menu_item, index );
	360
	361	if ( index )
	362	{
	363	m_clientList.Insert( m_clientList.Item(index - 1),
	364	(wxObject*) NULL );
	365	}
	366	else
	367	{
	368	m_clientList.Insert( (wxObject*) NULL );
	369	}
	370	}
	371	else
	372	{
	373	// normal control, just append
	374	gtk_menu_append( GTK_MENU(menu), menu_item );
	375
	376	m_clientList.Append( (wxObject*) NULL );
	377
	378	// don't call wxChoice::GetCount() from here because it doesn't work
	379	// if we're called from ctor (and GtkMenuShell is still NULL)
	380	index = m_clientList.GetCount() - 1;
	381	}
	382
	383	if (GTK_WIDGET_REALIZED(m_widget))
	384	{
	385	gtk_widget_realize( menu_item );
	386	gtk_widget_realize( GTK_BIN(menu_item)->child );
	387
	388	if (m_widgetStyle) ApplyWidgetStyle();
	389	}
	390
	391	gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
	392	GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
	393
	394	gtk_widget_show( menu_item );
	395
	396	// return the index of the item in the control
	397	return index;
	398	}
	399
	400	wxSize wxChoice::DoGetBestSize() const
	401	{
	402	wxSize ret( wxControl::DoGetBestSize() );
	403
	404	// we know better our horizontal extent: it depends on the longest string
	405	// we have
	406	ret.x = 0;
	407	if ( m_widget )
	408	{
	409	GdkFont *font = m_font.GetInternalFont();
	410
	411	wxCoord width;
	412	size_t count = GetCount();
	413	for ( size_t n = 0; n < count; n++ )
	414	{
	415	width = (wxCoord)gdk_string_width(font, GetString(n).mbc_str());
	416	if ( width > ret.x )
	417	ret.x = width;
	418	}
	419
	420	// add extra for the choice "=" button
	421
	422	// VZ: I don't know how to get the right value, it seems to be in
	423	// GtkOptionMenuProps struct from gtkoptionmenu.c but we can't get
	424	// to it - maybe we can use gtk_option_menu_size_request() for this
	425	// somehow?
	426	//
	427	// This default value works only for the default GTK+ theme (i.e.
	428	// no theme at all) (FIXME)
	429	static const int widthChoiceIndicator = 35;
	430	ret.x += widthChoiceIndicator;
	431	}
	432
	433	// but not less than the minimal width
	434	if ( ret.x < 80 )
	435	ret.x = 80;
	436
	437	ret.y = 16 + gdk_char_height( m_widget->style->font, 'H' );
	438	return ret;
	439	}
	440
	441	#endif // wxUSE_CHOICE
	442