src/gtk1/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"
//-----------------------------------------------------------------------------

extern "C" {
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;

    int selection = wxNOT_FOUND;

#ifdef __WXGTK20__
    selection = gtk_option_menu_get_history( GTK_OPTION_MENU(choice->GetHandle()) );
#else
    GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(choice->GetHandle()) ) );
    int count = 0;

    GList *child = menu_shell->children;
    while (child)
    {
        GtkBin *bin = GTK_BIN( child->data );
        if (!bin->child)
        {
            selection = count;
            break;
        }
        child = child->next;
        count++;
    }
#endif
    choice->m_selection_hack = selection;

    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,
                       const wxArrayString& choices,
                       long style, const wxValidator& validator,
                       const wxString &name )
{
    wxCArrayString chs(choices);

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

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;
    }

    // begin with no selection
    m_selection_hack = wxNOT_FOUND;

    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(size);
    SetBestSize(size); // need this too because this is a wxControlWithItems

    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) );

    // if the item to insert is at or before the selection, and the selection is valid
    if ((pos <= m_selection_hack) && (m_selection_hack != wxNOT_FOUND))
    {
        // move the selection forward one
        m_selection_hack++;
    }

    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();

    // begin with no selection
    m_selection_hack = wxNOT_FOUND;
}

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") );

    // if the item to delete is before the selection, and the selection is valid
    if ((n < m_selection_hack) && (m_selection_hack != wxNOT_FOUND))
    {
        // move the selection back one
        m_selection_hack--;
    }
    else if (n == m_selection_hack)
    {
        // invalidate the selection
        m_selection_hack = wxNOT_FOUND;
    }

    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") );

    return m_selection_hack;

}

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 );

    // set the local selection variable manually
    if ((n >= 0) && (n < GetCount()))
    {
        // a valid selection has been made
        m_selection_hack = n;
    }
    else if ((n == wxNOT_FOUND) || (GetCount() == 0))
    {
        // invalidates the selection if there are no items
        // or if it is specifically set to wxNOT_FOUND
        m_selection_hack = wxNOT_FOUND;
    }
    else
    {
        // this selects the first item by default if the selection is out of bounds
        m_selection_hack = 0;
    }
}

void wxChoice::DoApplyWidgetStyle(GtkRcStyle *style)
{
    GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );

    gtk_widget_modify_style( m_widget, style );
    gtk_widget_modify_style( GTK_WIDGET( menu_shell ), style );

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

        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_modify_style( label, style );

        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 );

        ApplyWidgetStyle();
    }

    // The best size of a wxChoice should probably
    // be changed everytime the control has been
    // changed, but at least after adding an item
    // it has to change. Adapted from Matt Ownby.
    InvalidateBestSize();

    gtk_signal_connect_after( 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 );
            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;

    // If this request_size is called with no entries then
    // the returned height is wrong. Give it a reasonable
    // default value.
    if (ret.y <= 18)
        ret.y = 8 + GetCharHeight();

    CacheBestSize(ret);
    return ret;
}

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

// static
wxVisualAttributes
wxChoice::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
{
    return GetDefaultAttributesFromGTKWidget(gtk_option_menu_new);
}


#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	extern "C" {
	42	static void gtk_choice_clicked_callback( GtkWidget WXUNUSED(widget), wxChoice choice )
	43	{
	44	if (g_isIdle)
	45	wxapp_install_idle_handler();
	46
	47	if (!choice->m_hasVMT) return;
	48
	49	if (g_blockEventsOnDrag) return;
	50
	51	int selection = wxNOT_FOUND;
	52
	53	#ifdef __WXGTK20__
	54	selection = gtk_option_menu_get_history( GTK_OPTION_MENU(choice->GetHandle()) );
	55	#else
	56	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(choice->GetHandle()) ) );
	57	int count = 0;
	58
	59	GList *child = menu_shell->children;
	60	while (child)
	61	{
	62	GtkBin *bin = GTK_BIN( child->data );
	63	if (!bin->child)
	64	{
	65	selection = count;
	66	break;
	67	}
	68	child = child->next;
	69	count++;
	70	}
	71	#endif
	72	choice->m_selection_hack = selection;
	73
	74	wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() );
	75	int n = choice->GetSelection();
	76
	77	event.SetInt( n );
	78	event.SetString( choice->GetStringSelection() );
	79	event.SetEventObject(choice);
	80
	81	if ( choice->HasClientObjectData() )
	82	event.SetClientObject( choice->GetClientObject(n) );
	83	else if ( choice->HasClientUntypedData() )
	84	event.SetClientData( choice->GetClientData(n) );
	85
	86	choice->GetEventHandler()->ProcessEvent(event);
	87	}
	88	}
	89
	90	//-----------------------------------------------------------------------------
	91	// wxChoice
	92	//-----------------------------------------------------------------------------
	93
	94	IMPLEMENT_DYNAMIC_CLASS(wxChoice,wxControl)
	95
	96	wxChoice::wxChoice()
	97	{
	98	m_strings = (wxSortedArrayString *)NULL;
	99	}
	100
	101	bool wxChoice::Create( wxWindow *parent, wxWindowID id,
	102	const wxPoint &pos, const wxSize &size,
	103	const wxArrayString& choices,
	104	long style, const wxValidator& validator,
	105	const wxString &name )
	106	{
	107	wxCArrayString chs(choices);
	108
	109	return Create( parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
	110	style, validator, name );
	111	}
	112
	113	bool wxChoice::Create( wxWindow *parent, wxWindowID id,
	114	const wxPoint &pos, const wxSize &size,
	115	int n, const wxString choices[],
	116	long style, const wxValidator& validator, const wxString &name )
	117	{
	118	m_needParent = TRUE;
	119	#if (GTK_MINOR_VERSION > 0)
	120	m_acceptsFocus = TRUE;
	121	#endif
	122
	123	if (!PreCreation( parent, pos, size ) \|\|
	124	!CreateBase( parent, id, pos, size, style, validator, name ))
	125	{
	126	wxFAIL_MSG( wxT("wxChoice creation failed") );
	127	return FALSE;
	128	}
	129
	130	m_widget = gtk_option_menu_new();
	131
	132	if ( style & wxCB_SORT )
	133	{
	134	// if our m_strings != NULL, DoAppend() will check for it and insert
	135	// items in the correct order
	136	m_strings = new wxSortedArrayString;
	137	}
	138
	139	// begin with no selection
	140	m_selection_hack = wxNOT_FOUND;
	141
	142	GtkWidget *menu = gtk_menu_new();
	143
	144	for (int i = 0; i < n; i++)
	145	{
	146	GtkAddHelper(menu, i, choices[i]);
	147	}
	148
	149	gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
	150
	151	m_parent->DoAddChild( this );
	152
	153	PostCreation(size);
	154	SetBestSize(size); // need this too because this is a wxControlWithItems
	155
	156	return TRUE;
	157	}
	158
	159	wxChoice::~wxChoice()
	160	{
	161	Clear();
	162
	163	delete m_strings;
	164	}
	165
	166	int wxChoice::DoAppend( const wxString &item )
	167	{
	168	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );
	169
	170	GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
	171
	172	return GtkAddHelper(menu, GetCount(), item);
	173	}
	174
	175	int wxChoice::DoInsert( const wxString &item, int pos )
	176	{
	177	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );
	178	wxCHECK_MSG( (pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
	179
	180	if (pos == GetCount())
	181	return DoAppend(item);
	182
	183	GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
	184
	185	// if the item to insert is at or before the selection, and the selection is valid
	186	if ((pos <= m_selection_hack) && (m_selection_hack != wxNOT_FOUND))
	187	{
	188	// move the selection forward one
	189	m_selection_hack++;
	190	}
	191
	192	return GtkAddHelper(menu, pos, item);
	193	}
	194
	195	void wxChoice::DoSetItemClientData( int n, void* clientData )
	196	{
	197	wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );
	198
	199	wxList::compatibility_iterator node = m_clientList.Item( n );
	200	wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientData") );
	201
	202	node->SetData( (wxObject*) clientData );
	203	}
	204
	205	void* wxChoice::DoGetItemClientData( int n ) const
	206	{
	207	wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid choice control") );
	208
	209	wxList::compatibility_iterator node = m_clientList.Item( n );
	210	wxCHECK_MSG( node, NULL, wxT("invalid index in wxChoice::DoGetItemClientData") );
	211
	212	return node->GetData();
	213	}
	214
	215	void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
	216	{
	217	wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );
	218
	219	wxList::compatibility_iterator node = m_clientList.Item( n );
	220	wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientObject") );
	221
	222	// wxItemContainer already deletes data for us
	223
	224	node->SetData( (wxObject*) clientData );
	225	}
	226
	227	wxClientData* wxChoice::DoGetItemClientObject( int n ) const
	228	{
	229	wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid choice control") );
	230
	231	wxList::compatibility_iterator node = m_clientList.Item( n );
	232	wxCHECK_MSG( node, (wxClientData *)NULL,
	233	wxT("invalid index in wxChoice::DoGetItemClientObject") );
	234
	235	return (wxClientData*) node->GetData();
	236	}
	237
	238	void wxChoice::Clear()
	239	{
	240	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	241
	242	gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) );
	243	GtkWidget *menu = gtk_menu_new();
	244	gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
	245
	246	if ( HasClientObjectData() )
	247	{
	248	// destroy the data (due to Robert's idea of using wxList<wxObject>
	249	// and not wxList<wxClientData> we can't just say
	250	// m_clientList.DeleteContents(TRUE) - this would crash!
	251	wxList::compatibility_iterator node = m_clientList.GetFirst();
	252	while ( node )
	253	{
	254	delete (wxClientData *)node->GetData();
	255	node = node->GetNext();
	256	}
	257	}
	258	m_clientList.Clear();
	259
	260	if ( m_strings )
	261	m_strings->Clear();
	262
	263	// begin with no selection
	264	m_selection_hack = wxNOT_FOUND;
	265	}
	266
	267	void wxChoice::Delete( int n )
	268	{
	269	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	270
	271	// VZ: apparently GTK+ doesn't have a built-in function to do it (not even
	272	// in 2.0), hence this dumb implementation -- still better than nothing
	273	int i,
	274	count = GetCount();
	275
	276	wxCHECK_RET( n >= 0 && n < count, _T("invalid index in wxChoice::Delete") );
	277
	278	// if the item to delete is before the selection, and the selection is valid
	279	if ((n < m_selection_hack) && (m_selection_hack != wxNOT_FOUND))
	280	{
	281	// move the selection back one
	282	m_selection_hack--;
	283	}
	284	else if (n == m_selection_hack)
	285	{
	286	// invalidate the selection
	287	m_selection_hack = wxNOT_FOUND;
	288	}
	289
	290	const bool hasClientData = m_clientDataItemsType != wxClientData_None;
	291	const bool hasObjectData = m_clientDataItemsType == wxClientData_Object;
	292
	293	wxList::compatibility_iterator node = m_clientList.GetFirst();
	294
	295	wxArrayString items;
	296	wxArrayPtrVoid itemsData;
	297	items.Alloc(count);
	298	for ( i = 0; i < count; i++ )
	299	{
	300	if ( i != n )
	301	{
	302	items.Add(GetString(i));
	303	if ( hasClientData )
	304	{
	305	// also save the client data
	306	itemsData.Add(node->GetData());
	307	}
	308	}
	309	else // need to delete the client object too
	310	{
	311	if ( hasObjectData )
	312	{
	313	delete (wxClientData *)node->GetData();
	314	}
	315	}
	316
	317	if ( hasClientData )
	318	{
	319	node = node->GetNext();
	320	}
	321	}
	322
	323	if ( hasObjectData )
	324	{
	325	// prevent Clear() from destroying all client data
	326	m_clientDataItemsType = wxClientData_None;
	327	}
	328
	329	Clear();
	330
	331	for ( i = 0; i < count - 1; i++ )
	332	{
	333	Append(items[i]);
	334
	335	if ( hasObjectData )
	336	SetClientObject(i, (wxClientData *)itemsData[i]);
	337	else if ( hasClientData )
	338	SetClientData(i, itemsData[i]);
	339	}
	340	}
	341
	342	int wxChoice::FindString( const wxString &string ) const
	343	{
	344	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
	345
	346	// If you read this code once and you think you understand
	347	// it, then you are very wrong. Robert Roebling.
	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	GtkLabel label = (GtkLabel ) NULL;
	356	if (bin->child)
	357	label = GTK_LABEL(bin->child);
	358	if (!label)
	359	label = GTK_LABEL( BUTTON_CHILD(m_widget) );
	360
	361	wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
	362
	363	#ifdef __WXGTK20__
	364	wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
	365	#else
	366	wxString tmp( label->label );
	367	#endif
	368	if (string == tmp)
	369	return count;
	370
	371	child = child->next;
	372	count++;
	373	}
	374
	375	return -1;
	376	}
	377
	378	int wxChoice::GetSelection() const
	379	{
	380	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
	381
	382	return m_selection_hack;
	383
	384	}
	385
	386	void wxChoice::SetString( int n, const wxString& str )
	387	{
	388	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	389
	390	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	391	int count = 0;
	392	GList *child = menu_shell->children;
	393	while (child)
	394	{
	395	GtkBin *bin = GTK_BIN( child->data );
	396	if (count == n)
	397	{
	398	GtkLabel label = (GtkLabel ) NULL;
	399	if (bin->child)
	400	label = GTK_LABEL(bin->child);
	401	if (!label)
	402	label = GTK_LABEL( BUTTON_CHILD(m_widget) );
	403
	404	wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
	405
	406	gtk_label_set_text( label, wxGTK_CONV( str ) );
	407
	408	return;
	409	}
	410	child = child->next;
	411	count++;
	412	}
	413	}
	414
	415	wxString wxChoice::GetString( int n ) const
	416	{
	417	wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid choice") );
	418
	419	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	420	int count = 0;
	421	GList *child = menu_shell->children;
	422	while (child)
	423	{
	424	GtkBin *bin = GTK_BIN( child->data );
	425	if (count == n)
	426	{
	427	GtkLabel label = (GtkLabel ) NULL;
	428	if (bin->child)
	429	label = GTK_LABEL(bin->child);
	430	if (!label)
	431	label = GTK_LABEL( BUTTON_CHILD(m_widget) );
	432
	433	wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
	434
	435	#ifdef __WXGTK20__
	436	return wxString( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
	437	#else
	438	return wxString( label->label );
	439	#endif
	440	}
	441	child = child->next;
	442	count++;
	443	}
	444
	445	wxFAIL_MSG( wxT("wxChoice: invalid index in GetString()") );
	446
	447	return wxT("");
	448	}
	449
	450	int wxChoice::GetCount() const
	451	{
	452	wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid choice") );
	453
	454	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	455	int count = 0;
	456	GList *child = menu_shell->children;
	457	while (child)
	458	{
	459	count++;
	460	child = child->next;
	461	}
	462	return count;
	463	}
	464
	465	void wxChoice::SetSelection( int n )
	466	{
	467	wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
	468
	469	int tmp = n;
	470	gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
	471
	472	// set the local selection variable manually
	473	if ((n >= 0) && (n < GetCount()))
	474	{
	475	// a valid selection has been made
	476	m_selection_hack = n;
	477	}
	478	else if ((n == wxNOT_FOUND) \|\| (GetCount() == 0))
	479	{
	480	// invalidates the selection if there are no items
	481	// or if it is specifically set to wxNOT_FOUND
	482	m_selection_hack = wxNOT_FOUND;
	483	}
	484	else
	485	{
	486	// this selects the first item by default if the selection is out of bounds
	487	m_selection_hack = 0;
	488	}
	489	}
	490
	491	void wxChoice::DoApplyWidgetStyle(GtkRcStyle *style)
	492	{
	493	GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
	494
	495	gtk_widget_modify_style( m_widget, style );
	496	gtk_widget_modify_style( GTK_WIDGET( menu_shell ), style );
	497
	498	GList *child = menu_shell->children;
	499	while (child)
	500	{
	501	gtk_widget_modify_style( GTK_WIDGET( child->data ), style );
	502
	503	GtkBin *bin = GTK_BIN( child->data );
	504	GtkWidget label = (GtkWidget ) NULL;
	505	if (bin->child)
	506	label = bin->child;
	507	if (!label)
	508	label = BUTTON_CHILD(m_widget);
	509
	510	gtk_widget_modify_style( label, style );
	511
	512	child = child->next;
	513	}
	514	}
	515
	516	int wxChoice::GtkAddHelper(GtkWidget *menu, int pos, const wxString& item)
	517	{
	518	wxCHECK_MSG((pos>=0) && (pos<=(int)m_clientList.GetCount()), -1, wxT("invalid index"));
	519
	520	GtkWidget *menu_item = gtk_menu_item_new_with_label( wxGTK_CONV( item ) );
	521
	522	size_t index;
	523	if ( m_strings )
	524	{
	525	// sorted control, need to insert at the correct index
	526	index = m_strings->Add(item);
	527
	528	gtk_menu_insert( GTK_MENU(menu), menu_item, index );
	529
	530	if ( index )
	531	{
	532	m_clientList.Insert( m_clientList.Item(index - 1),
	533	(wxObject*) NULL );
	534	}
	535	else
	536	{
	537	m_clientList.Insert( (wxObject*) NULL );
	538	}
	539	}
	540	else
	541	{
	542	// don't call wxChoice::GetCount() from here because it doesn't work
	543	// if we're called from ctor (and GtkMenuShell is still NULL)
	544
	545	// normal control, just append
	546	if (pos == (int)m_clientList.GetCount())
	547	{
	548	gtk_menu_append( GTK_MENU(menu), menu_item );
	549	m_clientList.Append( (wxObject*) NULL );
	550	index = m_clientList.GetCount() - 1;
	551	}
	552	else
	553	{
	554	gtk_menu_insert( GTK_MENU(menu), menu_item, pos );
	555	m_clientList.Insert( pos, (wxObject*) NULL );
	556	index = pos;
	557	}
	558	}
	559
	560	if (GTK_WIDGET_REALIZED(m_widget))
	561	{
	562	gtk_widget_realize( menu_item );
	563	gtk_widget_realize( GTK_BIN(menu_item)->child );
	564
	565	ApplyWidgetStyle();
	566	}
	567
	568	// The best size of a wxChoice should probably
	569	// be changed everytime the control has been
	570	// changed, but at least after adding an item
	571	// it has to change. Adapted from Matt Ownby.
	572	InvalidateBestSize();
	573
	574	gtk_signal_connect_after( GTK_OBJECT( menu_item ), "activate",
	575	GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
	576
	577	gtk_widget_show( menu_item );
	578
	579	// return the index of the item in the control
	580	return index;
	581	}
	582
	583	wxSize wxChoice::DoGetBestSize() const
	584	{
	585	wxSize ret( wxControl::DoGetBestSize() );
	586
	587	// we know better our horizontal extent: it depends on the longest string
	588	// we have
	589	ret.x = 0;
	590	if ( m_widget )
	591	{
	592	int width;
	593	size_t count = GetCount();
	594	for ( size_t n = 0; n < count; n++ )
	595	{
	596	GetTextExtent( GetString(n), &width, NULL, NULL, NULL );
	597	if ( width > ret.x )
	598	ret.x = width;
	599	}
	600
	601	// add extra for the choice "=" button
	602
	603	// VZ: I don't know how to get the right value, it seems to be in
	604	// GtkOptionMenuProps struct from gtkoptionmenu.c but we can't get
	605	// to it - maybe we can use gtk_option_menu_size_request() for this
	606	// somehow?
	607	//
	608	// This default value works only for the default GTK+ theme (i.e.
	609	// no theme at all) (FIXME)
	610	static const int widthChoiceIndicator = 35;
	611	ret.x += widthChoiceIndicator;
	612	}
	613
	614	// but not less than the minimal width
	615	if ( ret.x < 80 )
	616	ret.x = 80;
	617
	618	// If this request_size is called with no entries then
	619	// the returned height is wrong. Give it a reasonable
	620	// default value.
	621	if (ret.y <= 18)
	622	ret.y = 8 + GetCharHeight();
	623
	624	CacheBestSize(ret);
	625	return ret;
	626	}
	627
	628	bool wxChoice::IsOwnGtkWindow( GdkWindow *window )
	629	{
	630	#ifdef __WXGTK20__
	631	return GTK_BUTTON(m_widget)->event_window;
	632	#else
	633	return (window == m_widget->window);
	634	#endif
	635	}
	636
	637	// static
	638	wxVisualAttributes
	639	wxChoice::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
	640	{
	641	return GetDefaultAttributesFromGTKWidget(gtk_option_menu_new);
	642	}
	643
	644
	645	#endif // wxUSE_CHOICE
	646