src/gtk/choice.cpp

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


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

#include "wx/defs.h"

#if wxUSE_CHOICE

#include "wx/choice.h"
#include "wx/arrstr.h"

#include "wx/gtk/private.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++)
    {
        GtkAddHelper(menu, i, choices[i]);
    }

    gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );

    m_parent->DoAddChild( this );

    PostCreation();
    InheritAttributes();

    SetBestSize(size);

    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 GtkAddHelper(menu, GetCount(), item);
}

int wxChoice::DoInsert( const wxString &item, int pos )
{
    wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );
    wxCHECK_MSG( (pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));

    if (pos == GetCount())
        return DoAppend(item);

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

    return GtkAddHelper(menu, pos, item);
}

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

    wxList::compatibility_iterator node = m_clientList.Item( 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") );

    wxList::compatibility_iterator node = m_clientList.Item( n );
    wxCHECK_MSG( node, NULL, wxT("invalid index in wxChoice::DoGetItemClientData") );

    return node->GetData();
}

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

    wxList::compatibility_iterator node = m_clientList.Item( n );
    wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientObject") );

    // wxItemContainer already deletes data for us

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

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

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

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

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!
        wxList::compatibility_iterator node = m_clientList.GetFirst();
        while ( node )
        {
            delete (wxClientData *)node->GetData();
            node = node->GetNext();
        }
    }
    m_clientList.Clear();

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

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

    // VZ: apparently GTK+ doesn't have a built-in function to do it (not even
    //     in 2.0), hence this dumb implementation -- still better than nothing
    int i,
        count = GetCount();

    wxCHECK_RET( n >= 0 && n < count, _T("invalid index in wxChoice::Delete") );

    const bool hasClientData = m_clientDataItemsType != wxClientData_None;
    const bool hasObjectData = m_clientDataItemsType == wxClientData_Object;

    wxList::compatibility_iterator node = m_clientList.GetFirst();

    wxArrayString items;
    wxArrayPtrVoid itemsData;
    items.Alloc(count);
    for ( i = 0; i < count; i++ )
    {
        if ( i != n )
        {
            items.Add(GetString(i));
            if ( hasClientData )
            {
                // also save the client data
                itemsData.Add(node->GetData());
            }
        }
        else // need to delete the client object too
        {
            if ( hasObjectData )
            {
                delete (wxClientData *)node->GetData();
            }
        }

        if ( hasClientData )
        {
            node = node->GetNext();
        }
    }

    if ( hasObjectData )
    {
        // prevent Clear() from destroying all client data
        m_clientDataItemsType = wxClientData_None;
    }

    Clear();

    for ( i = 0; i < count - 1; i++ )
    {
        Append(items[i]);

        if ( hasObjectData )
            SetClientObject(i, (wxClientData *)itemsData[i]);
        else if ( hasClientData )
            SetClientData(i, itemsData[i]);
    }
}

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( BUTTON_CHILD(m_widget) );

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

#ifdef __WXGTK20__
         wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
#else
         wxString tmp( label->label );
#endif
        if (string == tmp)
            return count;

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

    return -1;
}

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

#ifdef __WXGTK20__

    return gtk_option_menu_get_history( GTK_OPTION_MENU(m_widget) );

#else
    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;
#endif
}

void wxChoice::SetString( int n, const wxString& str )
{
    wxCHECK_RET( m_widget != NULL, 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( BUTTON_CHILD(m_widget) );

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

            gtk_label_set_text( label, wxGTK_CONV( str ) );

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

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( BUTTON_CHILD(m_widget) );

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

#ifdef __WXGTK20__
            return wxString( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
#else
            return wxString( label->label );
#endif
        }
        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 = BUTTON_CHILD(m_widget);

        gtk_widget_set_style( label, m_widgetStyle );

        child = child->next;
    }
}

int wxChoice::GtkAddHelper(GtkWidget *menu, int pos, const wxString& item)
{
    wxCHECK_MSG((pos>=0) && (pos<=(int)m_clientList.GetCount()), -1, wxT("invalid index"));

    GtkWidget *menu_item = gtk_menu_item_new_with_label( wxGTK_CONV( item ) );

    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
    {
        // don't call wxChoice::GetCount() from here because it doesn't work
        // if we're called from ctor (and GtkMenuShell is still NULL)

        // normal control, just append
        if (pos == (int)m_clientList.GetCount())
        {
        gtk_menu_append( GTK_MENU(menu), menu_item );
        m_clientList.Append( (wxObject*) NULL );
        index = m_clientList.GetCount() - 1;
        }
        else
        {
            gtk_menu_insert( GTK_MENU(menu), menu_item, pos );
            m_clientList.Insert( pos, (wxObject*) NULL );
            index = pos;
        }
    }

    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 )
    {
        int width;
        size_t count = GetCount();
        for ( size_t n = 0; n < count; n++ )
        {
            GetTextExtent( GetString(n), &width, NULL, NULL, NULL, &m_font );
            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 + GetCharHeight();

    return ret;
}

bool wxChoice::IsOwnGtkWindow( GdkWindow *window )
{
#ifdef __WXGTK20__
    return GTK_BUTTON(m_widget)->event_window;
#else
    return (window == m_widget->window);
#endif
}


#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	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	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	#include "wx/arrstr.h"
	21
	22	#include "wx/gtk/private.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	GtkAddHelper(menu, i, 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	InheritAttributes();
	115
	116	SetBestSize(size);
	117
	118	Show( TRUE );
	119
	120	return TRUE;
	121	}
	122
	123	wxChoice::~wxChoice()
	124	{
	125	Clear();
	126
	127	delete m_strings;
	128	}
	129
	130	int wxChoice::DoAppend( const wxString &item )
	131	{
	132	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );
	133
	134	GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
	135
	136	return GtkAddHelper(menu, GetCount(), item);
	137	}
	138
	139	int wxChoice::DoInsert( const wxString &item, int pos )
	140	{
	141	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );
	142	wxCHECK_MSG( (pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
	143
	144	if (pos == GetCount())
	145	return DoAppend(item);
	146
	147	GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
	148
	149	return GtkAddHelper(menu, pos, item);
	150	}
	151
	152	void wxChoice::DoSetItemClientData( int n, void* clientData )
	153	{
	154	wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );
	155
	156	wxList::compatibility_iterator node = m_clientList.Item( n );
	157	wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientData") );
	158
	159	node->SetData( (wxObject*) clientData );
	160	}
	161
	162	void* wxChoice::DoGetItemClientData( int n ) const
	163	{
	164	wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid choice control") );
	165
	166	wxList::compatibility_iterator node = m_clientList.Item( n );
	167	wxCHECK_MSG( node, NULL, wxT("invalid index in wxChoice::DoGetItemClientData") );
	168
	169	return node->GetData();
	170	}
	171
	172	void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
	173	{
	174	wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );
	175
	176	wxList::compatibility_iterator node = m_clientList.Item( n );
	177	wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientObject") );
	178
	179	// wxItemContainer already deletes data for us
	180
	181	node->SetData( (wxObject*) clientData );
	182	}
	183
	184	wxClientData* wxChoice::DoGetItemClientObject( int n ) const
	185	{
	186	wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid choice control") );
	187
	188	wxList::compatibility_iterator node = m_clientList.Item( n );
	189	wxCHECK_MSG( node, (wxClientData *)NULL,
	190	wxT("invalid index in wxChoice::DoGetItemClientObject") );
	191
	192	return (wxClientData*) node->GetData();
	193	}
	194
	195	void wxChoice::Clear()
	196	{
	197	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	198
	199	gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) );
	200	GtkWidget *menu = gtk_menu_new();
	201	gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
	202
	203	if ( HasClientObjectData() )
	204	{
	205	// destroy the data (due to Robert's idea of using wxList<wxObject>
	206	// and not wxList<wxClientData> we can't just say
	207	// m_clientList.DeleteContents(TRUE) - this would crash!
	208	wxList::compatibility_iterator node = m_clientList.GetFirst();
	209	while ( node )
	210	{
	211	delete (wxClientData *)node->GetData();
	212	node = node->GetNext();
	213	}
	214	}
	215	m_clientList.Clear();
	216
	217	if ( m_strings )
	218	m_strings->Clear();
	219	}
	220
	221	void wxChoice::Delete( int n )
	222	{
	223	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	224
	225	// VZ: apparently GTK+ doesn't have a built-in function to do it (not even
	226	// in 2.0), hence this dumb implementation -- still better than nothing
	227	int i,
	228	count = GetCount();
	229
	230	wxCHECK_RET( n >= 0 && n < count, _T("invalid index in wxChoice::Delete") );
	231
	232	const bool hasClientData = m_clientDataItemsType != wxClientData_None;
	233	const bool hasObjectData = m_clientDataItemsType == wxClientData_Object;
	234
	235	wxList::compatibility_iterator node = m_clientList.GetFirst();
	236
	237	wxArrayString items;
	238	wxArrayPtrVoid itemsData;
	239	items.Alloc(count);
	240	for ( i = 0; i < count; i++ )
	241	{
	242	if ( i != n )
	243	{
	244	items.Add(GetString(i));
	245	if ( hasClientData )
	246	{
	247	// also save the client data
	248	itemsData.Add(node->GetData());
	249	}
	250	}
	251	else // need to delete the client object too
	252	{
	253	if ( hasObjectData )
	254	{
	255	delete (wxClientData *)node->GetData();
	256	}
	257	}
	258
	259	if ( hasClientData )
	260	{
	261	node = node->GetNext();
	262	}
	263	}
	264
	265	if ( hasObjectData )
	266	{
	267	// prevent Clear() from destroying all client data
	268	m_clientDataItemsType = wxClientData_None;
	269	}
	270
	271	Clear();
	272
	273	for ( i = 0; i < count - 1; i++ )
	274	{
	275	Append(items[i]);
	276
	277	if ( hasObjectData )
	278	SetClientObject(i, (wxClientData *)itemsData[i]);
	279	else if ( hasClientData )
	280	SetClientData(i, itemsData[i]);
	281	}
	282	}
	283
	284	int wxChoice::FindString( const wxString &string ) const
	285	{
	286	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
	287
	288	// If you read this code once and you think you understand
	289	// it, then you are very wrong. Robert Roebling.
	290
	291	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	292	int count = 0;
	293	GList *child = menu_shell->children;
	294	while (child)
	295	{
	296	GtkBin *bin = GTK_BIN( child->data );
	297	GtkLabel label = (GtkLabel ) NULL;
	298	if (bin->child)
	299	label = GTK_LABEL(bin->child);
	300	if (!label)
	301	label = GTK_LABEL( BUTTON_CHILD(m_widget) );
	302
	303	wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
	304
	305	#ifdef __WXGTK20__
	306	wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
	307	#else
	308	wxString tmp( label->label );
	309	#endif
	310	if (string == tmp)
	311	return count;
	312
	313	child = child->next;
	314	count++;
	315	}
	316
	317	return -1;
	318	}
	319
	320	int wxChoice::GetSelection() const
	321	{
	322	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
	323
	324	#ifdef __WXGTK20__
	325
	326	return gtk_option_menu_get_history( GTK_OPTION_MENU(m_widget) );
	327
	328	#else
	329	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	330	int count = 0;
	331
	332	GList *child = menu_shell->children;
	333	while (child)
	334	{
	335	GtkBin *bin = GTK_BIN( child->data );
	336	if (!bin->child) return count;
	337	child = child->next;
	338	count++;
	339	}
	340
	341	return -1;
	342	#endif
	343	}
	344
	345	void wxChoice::SetString( int n, const wxString& str )
	346	{
	347	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	348
	349	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	350	int count = 0;
	351	GList *child = menu_shell->children;
	352	while (child)
	353	{
	354	GtkBin *bin = GTK_BIN( child->data );
	355	if (count == n)
	356	{
	357	GtkLabel label = (GtkLabel ) NULL;
	358	if (bin->child)
	359	label = GTK_LABEL(bin->child);
	360	if (!label)
	361	label = GTK_LABEL( BUTTON_CHILD(m_widget) );
	362
	363	wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
	364
	365	gtk_label_set_text( label, wxGTK_CONV( str ) );
	366
	367	return;
	368	}
	369	child = child->next;
	370	count++;
	371	}
	372	}
	373
	374	wxString wxChoice::GetString( int n ) const
	375	{
	376	wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid choice") );
	377
	378	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	379	int count = 0;
	380	GList *child = menu_shell->children;
	381	while (child)
	382	{
	383	GtkBin *bin = GTK_BIN( child->data );
	384	if (count == n)
	385	{
	386	GtkLabel label = (GtkLabel ) NULL;
	387	if (bin->child)
	388	label = GTK_LABEL(bin->child);
	389	if (!label)
	390	label = GTK_LABEL( BUTTON_CHILD(m_widget) );
	391
	392	wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
	393
	394	#ifdef __WXGTK20__
	395	return wxString( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
	396	#else
	397	return wxString( label->label );
	398	#endif
	399	}
	400	child = child->next;
	401	count++;
	402	}
	403
	404	wxFAIL_MSG( wxT("wxChoice: invalid index in GetString()") );
	405
	406	return wxT("");
	407	}
	408
	409	int wxChoice::GetCount() const
	410	{
	411	wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid choice") );
	412
	413	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	414	int count = 0;
	415	GList *child = menu_shell->children;
	416	while (child)
	417	{
	418	count++;
	419	child = child->next;
	420	}
	421	return count;
	422	}
	423
	424	void wxChoice::SetSelection( int n )
	425	{
	426	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	427
	428	int tmp = n;
	429	gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
	430	}
	431
	432	void wxChoice::ApplyWidgetStyle()
	433	{
	434	SetWidgetStyle();
	435
	436	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	437
	438	gtk_widget_set_style( m_widget, m_widgetStyle );
	439	gtk_widget_set_style( GTK_WIDGET( menu_shell ), m_widgetStyle );
	440
	441	GList *child = menu_shell->children;
	442	while (child)
	443	{
	444	gtk_widget_set_style( GTK_WIDGET( child->data ), m_widgetStyle );
	445
	446	GtkBin *bin = GTK_BIN( child->data );
	447	GtkWidget label = (GtkWidget ) NULL;
	448	if (bin->child)
	449	label = bin->child;
	450	if (!label)
	451	label = BUTTON_CHILD(m_widget);
	452
	453	gtk_widget_set_style( label, m_widgetStyle );
	454
	455	child = child->next;
	456	}
	457	}
	458
	459	int wxChoice::GtkAddHelper(GtkWidget *menu, int pos, const wxString& item)
	460	{
	461	wxCHECK_MSG((pos>=0) && (pos<=(int)m_clientList.GetCount()), -1, wxT("invalid index"));
	462
	463	GtkWidget *menu_item = gtk_menu_item_new_with_label( wxGTK_CONV( item ) );
	464
	465	size_t index;
	466	if ( m_strings )
	467	{
	468	// sorted control, need to insert at the correct index
	469	index = m_strings->Add(item);
	470
	471	gtk_menu_insert( GTK_MENU(menu), menu_item, index );
	472
	473	if ( index )
	474	{
	475	m_clientList.Insert( m_clientList.Item(index - 1),
	476	(wxObject*) NULL );
	477	}
	478	else
	479	{
	480	m_clientList.Insert( (wxObject*) NULL );
	481	}
	482	}
	483	else
	484	{
	485	// don't call wxChoice::GetCount() from here because it doesn't work
	486	// if we're called from ctor (and GtkMenuShell is still NULL)
	487
	488	// normal control, just append
	489	if (pos == (int)m_clientList.GetCount())
	490	{
	491	gtk_menu_append( GTK_MENU(menu), menu_item );
	492	m_clientList.Append( (wxObject*) NULL );
	493	index = m_clientList.GetCount() - 1;
	494	}
	495	else
	496	{
	497	gtk_menu_insert( GTK_MENU(menu), menu_item, pos );
	498	m_clientList.Insert( pos, (wxObject*) NULL );
	499	index = pos;
	500	}
	501	}
	502
	503	if (GTK_WIDGET_REALIZED(m_widget))
	504	{
	505	gtk_widget_realize( menu_item );
	506	gtk_widget_realize( GTK_BIN(menu_item)->child );
	507
	508	if (m_widgetStyle) ApplyWidgetStyle();
	509	}
	510
	511	gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
	512	GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
	513
	514	gtk_widget_show( menu_item );
	515
	516	// return the index of the item in the control
	517	return index;
	518	}
	519
	520	wxSize wxChoice::DoGetBestSize() const
	521	{
	522	wxSize ret( wxControl::DoGetBestSize() );
	523
	524	// we know better our horizontal extent: it depends on the longest string
	525	// we have
	526	ret.x = 0;
	527	if ( m_widget )
	528	{
	529	int width;
	530	size_t count = GetCount();
	531	for ( size_t n = 0; n < count; n++ )
	532	{
	533	GetTextExtent( GetString(n), &width, NULL, NULL, NULL, &m_font );
	534	if ( width > ret.x )
	535	ret.x = width;
	536	}
	537
	538	// add extra for the choice "=" button
	539
	540	// VZ: I don't know how to get the right value, it seems to be in
	541	// GtkOptionMenuProps struct from gtkoptionmenu.c but we can't get
	542	// to it - maybe we can use gtk_option_menu_size_request() for this
	543	// somehow?
	544	//
	545	// This default value works only for the default GTK+ theme (i.e.
	546	// no theme at all) (FIXME)
	547	static const int widthChoiceIndicator = 35;
	548	ret.x += widthChoiceIndicator;
	549	}
	550
	551	// but not less than the minimal width
	552	if ( ret.x < 80 )
	553	ret.x = 80;
	554
	555	ret.y = 16 + GetCharHeight();
	556
	557	return ret;
	558	}
	559
	560	bool wxChoice::IsOwnGtkWindow( GdkWindow *window )
	561	{
	562	#ifdef __WXGTK20__
	563	return GTK_BUTTON(m_widget)->event_window;
	564	#else
	565	return (window == m_widget->window);
	566	#endif
	567	}
	568
	569
	570	#endif // wxUSE_CHOICE
	571