src/gtk1/combobox.cpp

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

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

#include "wx/combobox.h"

#if wxUSE_COMBOBOX

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

#include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED

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

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

extern void wxapp_install_idle_handler();
extern bool g_isIdle;

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

extern bool   g_blockEventsOnDrag;

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

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

    if (!combo->m_hasVMT) return;

    if (g_blockEventsOnDrag) return;

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

    combo->m_alreadySent = TRUE;

    int curSelection = combo->GetSelection();

    if (combo->m_prevSelection != curSelection)
    {
        GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
        gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
    }

    combo->m_prevSelection = curSelection;

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

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

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

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

    if (!combo->m_hasVMT) return;

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

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

IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)

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

bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
                         const wxPoint& pos, const wxSize& size,
                         int n, const wxString choices[],
                         long style, const wxValidator& validator,
                         const wxString& name )
{
    m_alreadySent = FALSE;
    m_needParent = TRUE;
    m_acceptsFocus = TRUE;
    m_prevSelection = 0;

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

    m_widget = gtk_combo_new();

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

    // and case-sensitive
    gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );


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

    gtk_list_set_selection_mode( GTK_LIST(list), GTK_SELECTION_MULTIPLE );

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

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

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

        gtk_container_add( GTK_CONTAINER(list), list_item );

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

        gtk_widget_show( list_item );
    }

    m_parent->DoAddChild( this );

    m_focusWidget = GTK_COMBO(m_widget)->entry;

    PostCreation();

    ConnectWidget( GTK_COMBO(m_widget)->button );

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

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

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

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

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

    Show( TRUE );

    return TRUE;
}

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

    m_clientDataList.Clear();
}

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

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

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

    gtk_container_add( GTK_CONTAINER(list), list_item );

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

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

        if (m_widgetStyle) ApplyWidgetStyle();
    }

    gtk_widget_show( list_item );
}

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

    AppendCommon( item );
}

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

    AppendCommon( item );
}

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

    AppendCommon( item );
}

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

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

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

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

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

    return node->Data();
}

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

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

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

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

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

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

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

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

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

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

    m_clientDataList.Clear();
}

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

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

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

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

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

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

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

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

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

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

    return wxNOT_FOUND;
}

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

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

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

    return -1;
}

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

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

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

    return str;
}

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

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

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

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

    return wxT("");
}

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

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

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

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

    DisableEvents();

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

    EnableEvents();
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    SetInsertionPoint( -1 );
}

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

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

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

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

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

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

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

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

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

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

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

    event.Skip();
}

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

        child = child->next;
    }
}

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

        child = child->next;
    }
}

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

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

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

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

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

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

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

        child = child->next;
    }
}

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

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

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

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

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

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

#endif
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: combobox.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifdef __GNUG__
	11	#pragma implementation "combobox.h"
	12	#endif
	13
	14	#include "wx/combobox.h"
	15
	16	#if wxUSE_COMBOBOX
	17
	18	#include "wx/settings.h"
	19	#include "wx/intl.h"
	20
	21	#include "wx/textctrl.h" // for wxEVT_COMMAND_TEXT_UPDATED
	22
	23	#include <gdk/gdk.h>
	24	#include <gtk/gtk.h>
	25
	26	//-----------------------------------------------------------------------------
	27	// idle system
	28	//-----------------------------------------------------------------------------
	29
	30	extern void wxapp_install_idle_handler();
	31	extern bool g_isIdle;
	32
	33	//-----------------------------------------------------------------------------
	34	// data
	35	//-----------------------------------------------------------------------------
	36
	37	extern bool g_blockEventsOnDrag;
	38
	39	//-----------------------------------------------------------------------------
	40	// "select"
	41	//-----------------------------------------------------------------------------
	42
	43	static void
	44	gtk_combo_clicked_callback( GtkWidget WXUNUSED(widget), wxComboBox combo )
	45	{
	46	if (g_isIdle) wxapp_install_idle_handler();
	47
	48	if (!combo->m_hasVMT) return;
	49
	50	if (g_blockEventsOnDrag) return;
	51
	52	if (combo->m_alreadySent)
	53	{
	54	combo->m_alreadySent = FALSE;
	55	return;
	56	}
	57
	58	combo->m_alreadySent = TRUE;
	59
	60	int curSelection = combo->GetSelection();
	61
	62	if (combo->m_prevSelection != curSelection)
	63	{
	64	GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
	65	gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
	66	}
	67
	68	combo->m_prevSelection = curSelection;
	69
	70	wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
	71	event.SetInt( curSelection );
	72	event.SetString( combo->GetStringSelection() );
	73	event.SetEventObject( combo );
	74
	75	combo->GetEventHandler()->ProcessEvent( event );
	76	}
	77
	78	//-----------------------------------------------------------------------------
	79	// "changed"
	80	//-----------------------------------------------------------------------------
	81
	82	static void
	83	gtk_text_changed_callback( GtkWidget WXUNUSED(widget), wxComboBox combo )
	84	{
	85	if (g_isIdle) wxapp_install_idle_handler();
	86
	87	if (!combo->m_hasVMT) return;
	88
	89	wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
	90	event.SetString( combo->GetValue() );
	91	event.SetEventObject( combo );
	92	combo->GetEventHandler()->ProcessEvent( event );
	93	}
	94
	95	//-----------------------------------------------------------------------------
	96	// wxComboBox
	97	//-----------------------------------------------------------------------------
	98
	99	IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
	100
	101	BEGIN_EVENT_TABLE(wxComboBox, wxControl)
	102	EVT_SIZE(wxComboBox::OnSize)
	103	EVT_CHAR(wxComboBox::OnChar)
	104	END_EVENT_TABLE()
	105
	106	bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
	107	const wxPoint& pos, const wxSize& size,
	108	int n, const wxString choices[],
	109	long style, const wxValidator& validator,
	110	const wxString& name )
	111	{
	112	m_alreadySent = FALSE;
	113	m_needParent = TRUE;
	114	m_acceptsFocus = TRUE;
	115	m_prevSelection = 0;
	116
	117	if (!PreCreation( parent, pos, size ) \|\|
	118	!CreateBase( parent, id, pos, size, style, validator, name ))
	119	{
	120	wxFAIL_MSG( wxT("wxComboBox creation failed") );
	121	return FALSE;
	122	}
	123
	124	m_widget = gtk_combo_new();
	125
	126	// make it more useable
	127	gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
	128
	129	// and case-sensitive
	130	gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
	131
	132
	133	GtkWidget *list = GTK_COMBO(m_widget)->list;
	134
	135	gtk_list_set_selection_mode( GTK_LIST(list), GTK_SELECTION_MULTIPLE );
	136
	137	for (int i = 0; i < n; i++)
	138	{
	139	/* don't send first event, which GTK sends aways when
	140	inserting the first item */
	141	m_alreadySent = TRUE;
	142
	143	GtkWidget *list_item = gtk_list_item_new_with_label( choices[i].mbc_str() );
	144
	145	m_clientDataList.Append( (wxObject*)NULL );
	146	m_clientObjectList.Append( (wxObject*)NULL );
	147
	148	gtk_container_add( GTK_CONTAINER(list), list_item );
	149
	150	gtk_signal_connect( GTK_OBJECT(list_item), "select",
	151	GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
	152
	153	gtk_widget_show( list_item );
	154	}
	155
	156	m_parent->DoAddChild( this );
	157
	158	m_focusWidget = GTK_COMBO(m_widget)->entry;
	159
	160	PostCreation();
	161
	162	ConnectWidget( GTK_COMBO(m_widget)->button );
	163
	164	if (!value.IsNull()) SetValue( value );
	165
	166	if (style & wxCB_READONLY)
	167	gtk_entry_set_editable( GTK_ENTRY( GTK_COMBO(m_widget)->entry ), FALSE );
	168
	169	gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
	170	GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
	171
	172	wxSize size_best( DoGetBestSize() );
	173	wxSize new_size( size );
	174	if (new_size.x == -1)
	175	new_size.x = size_best.x;
	176	if (new_size.y == -1)
	177	new_size.y = size_best.y;
	178	if (new_size.y > size_best.y)
	179	new_size.y = size_best.y;
	180	if ((new_size.x != size.x) \|\| (new_size.y != size.y))
	181	SetSize( new_size.x, new_size.y );
	182
	183	SetBackgroundColour( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_WINDOW ) );
	184	SetForegroundColour( parent->GetForegroundColour() );
	185
	186	Show( TRUE );
	187
	188	return TRUE;
	189	}
	190
	191	wxComboBox::~wxComboBox()
	192	{
	193	wxNode *node = m_clientObjectList.First();
	194	while (node)
	195	{
	196	wxClientData cd = (wxClientData)node->Data();
	197	if (cd) delete cd;
	198	node = node->Next();
	199	}
	200	m_clientObjectList.Clear();
	201
	202	m_clientDataList.Clear();
	203	}
	204
	205	void wxComboBox::AppendCommon( const wxString &item )
	206	{
	207	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	208
	209	GtkWidget *list = GTK_COMBO(m_widget)->list;
	210
	211	GtkWidget *list_item = gtk_list_item_new_with_label( item.mbc_str() );
	212
	213	gtk_container_add( GTK_CONTAINER(list), list_item );
	214
	215	gtk_signal_connect( GTK_OBJECT(list_item), "select",
	216	GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
	217
	218	if (GTK_WIDGET_REALIZED(m_widget))
	219	{
	220	gtk_widget_realize( list_item );
	221	gtk_widget_realize( GTK_BIN(list_item)->child );
	222
	223	if (m_widgetStyle) ApplyWidgetStyle();
	224	}
	225
	226	gtk_widget_show( list_item );
	227	}
	228
	229	void wxComboBox::Append( const wxString &item )
	230	{
	231	m_clientDataList.Append( (wxObject*) NULL );
	232	m_clientObjectList.Append( (wxObject*) NULL );
	233
	234	AppendCommon( item );
	235	}
	236
	237	void wxComboBox::Append( const wxString &item, void *clientData )
	238	{
	239	m_clientDataList.Append( (wxObject*) clientData );
	240	m_clientObjectList.Append( (wxObject*)NULL );
	241
	242	AppendCommon( item );
	243	}
	244
	245	void wxComboBox::Append( const wxString &item, wxClientData *clientData )
	246	{
	247	m_clientDataList.Append( (wxObject*) NULL );
	248	m_clientObjectList.Append( (wxObject*) clientData );
	249
	250	AppendCommon( item );
	251	}
	252
	253	void wxComboBox::SetClientData( int n, void* clientData )
	254	{
	255	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	256
	257	wxNode *node = m_clientDataList.Nth( n );
	258	if (!node) return;
	259
	260	node->SetData( (wxObject*) clientData );
	261	}
	262
	263	void* wxComboBox::GetClientData( int n )
	264	{
	265	wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
	266
	267	wxNode *node = m_clientDataList.Nth( n );
	268	if (!node) return NULL;
	269
	270	return node->Data();
	271	}
	272
	273	void wxComboBox::SetClientObject( int n, wxClientData* clientData )
	274	{
	275	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	276
	277	wxNode *node = m_clientObjectList.Nth( n );
	278	if (!node) return;
	279
	280	wxClientData cd = (wxClientData) node->Data();
	281	if (cd) delete cd;
	282
	283	node->SetData( (wxObject*) clientData );
	284	}
	285
	286	wxClientData* wxComboBox::GetClientObject( int n )
	287	{
	288	wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
	289
	290	wxNode *node = m_clientDataList.Nth( n );
	291	if (!node) return (wxClientData*) NULL;
	292
	293	return (wxClientData*) node->Data();
	294	}
	295
	296	void wxComboBox::Clear()
	297	{
	298	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	299
	300	GtkWidget *list = GTK_COMBO(m_widget)->list;
	301	gtk_list_clear_items( GTK_LIST(list), 0, Number() );
	302
	303	wxNode *node = m_clientObjectList.First();
	304	while (node)
	305	{
	306	wxClientData cd = (wxClientData)node->Data();
	307	if (cd) delete cd;
	308	node = node->Next();
	309	}
	310	m_clientObjectList.Clear();
	311
	312	m_clientDataList.Clear();
	313	}
	314
	315	void wxComboBox::Delete( int n )
	316	{
	317	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	318
	319	GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
	320
	321	GList *child = g_list_nth( listbox->children, n );
	322
	323	if (!child)
	324	{
	325	wxFAIL_MSG(wxT("wrong index"));
	326	return;
	327	}
	328
	329	GList list = g_list_append( (GList) NULL, child->data );
	330	gtk_list_remove_items( listbox, list );
	331	g_list_free( list );
	332
	333	wxNode *node = m_clientObjectList.Nth( n );
	334	if (node)
	335	{
	336	wxClientData cd = (wxClientData)node->Data();
	337	if (cd) delete cd;
	338	m_clientObjectList.DeleteNode( node );
	339	}
	340
	341	node = m_clientDataList.Nth( n );
	342	if (node)
	343	{
	344	m_clientDataList.DeleteNode( node );
	345	}
	346	}
	347
	348	int wxComboBox::FindString( const wxString &item )
	349	{
	350	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
	351
	352	GtkWidget *list = GTK_COMBO(m_widget)->list;
	353
	354	GList *child = GTK_LIST(list)->children;
	355	int count = 0;
	356	while (child)
	357	{
	358	GtkBin *bin = GTK_BIN( child->data );
	359	GtkLabel *label = GTK_LABEL( bin->child );
	360	if (item == wxString(label->label,*wxConvCurrent))
	361	return count;
	362	count++;
	363	child = child->next;
	364	}
	365
	366	return wxNOT_FOUND;
	367	}
	368
	369	int wxComboBox::GetSelection() const
	370	{
	371	wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
	372
	373	GtkWidget *list = GTK_COMBO(m_widget)->list;
	374
	375	GList *selection = GTK_LIST(list)->selection;
	376	if (selection)
	377	{
	378	GList *child = GTK_LIST(list)->children;
	379	int count = 0;
	380	while (child)
	381	{
	382	if (child->data == selection->data) return count;
	383	count++;
	384	child = child->next;
	385	}
	386	}
	387
	388	return -1;
	389	}
	390
	391	wxString wxComboBox::GetString( int n ) const
	392	{
	393	wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
	394
	395	GtkWidget *list = GTK_COMBO(m_widget)->list;
	396
	397	wxString str;
	398	GList *child = g_list_nth( GTK_LIST(list)->children, n );
	399	if (child)
	400	{
	401	GtkBin *bin = GTK_BIN( child->data );
	402	GtkLabel *label = GTK_LABEL( bin->child );
	403	str = wxString(label->label,*wxConvCurrent);
	404	}
	405	else
	406	{
	407	wxFAIL_MSG( wxT("wxComboBox: wrong index") );
	408	}
	409
	410	return str;
	411	}
	412
	413	wxString wxComboBox::GetStringSelection() const
	414	{
	415	wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
	416
	417	GtkWidget *list = GTK_COMBO(m_widget)->list;
	418
	419	GList *selection = GTK_LIST(list)->selection;
	420	if (selection)
	421	{
	422	GtkBin *bin = GTK_BIN( selection->data );
	423	wxString tmp = wxString(GTK_LABEL( bin->child )->label,*wxConvCurrent);
	424	return tmp;
	425	}
	426
	427	wxFAIL_MSG( wxT("wxComboBox: no selection") );
	428
	429	return wxT("");
	430	}
	431
	432	int wxComboBox::Number() const
	433	{
	434	wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
	435
	436	GtkWidget *list = GTK_COMBO(m_widget)->list;
	437
	438	GList *child = GTK_LIST(list)->children;
	439	int count = 0;
	440	while (child) { count++; child = child->next; }
	441	return count;
	442	}
	443
	444	void wxComboBox::SetSelection( int n )
	445	{
	446	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	447
	448	DisableEvents();
	449
	450	GtkWidget *list = GTK_COMBO(m_widget)->list;
	451	gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
	452	gtk_list_select_item( GTK_LIST(list), n );
	453	m_prevSelection = n;
	454
	455	EnableEvents();
	456	}
	457
	458	void wxComboBox::SetStringSelection( const wxString &string )
	459	{
	460	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	461
	462	int res = FindString( string );
	463	if (res == -1) return;
	464	SetSelection( res );
	465	}
	466
	467	wxString wxComboBox::GetValue() const
	468	{
	469	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	470	wxString tmp = wxString(gtk_entry_get_text( GTK_ENTRY(entry) ),*wxConvCurrent);
	471	return tmp;
	472	}
	473
	474	void wxComboBox::SetValue( const wxString& value )
	475	{
	476	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	477
	478	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	479	wxString tmp = wxT("");
	480	if (!value.IsNull()) tmp = value;
	481	gtk_entry_set_text( GTK_ENTRY(entry), tmp.mbc_str() );
	482	}
	483
	484	void wxComboBox::Copy()
	485	{
	486	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	487
	488	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	489	#if defined(__WXGTK13__) \|\| (GTK_MINOR_VERSION > 0)
	490	gtk_editable_copy_clipboard( GTK_EDITABLE(entry) );
	491	#else
	492	gtk_editable_copy_clipboard( GTK_EDITABLE(entry), 0 );
	493	#endif
	494	}
	495
	496	void wxComboBox::Cut()
	497	{
	498	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	499
	500	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	501	#if defined(__WXGTK13__) \|\| (GTK_MINOR_VERSION > 0)
	502	gtk_editable_cut_clipboard( GTK_EDITABLE(entry) );
	503	#else
	504	gtk_editable_cut_clipboard( GTK_EDITABLE(entry), 0 );
	505	#endif
	506	}
	507
	508	void wxComboBox::Paste()
	509	{
	510	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	511
	512	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	513	#if defined(__WXGTK13__) \|\| (GTK_MINOR_VERSION > 0)
	514	gtk_editable_paste_clipboard( GTK_EDITABLE(entry) );
	515	#else
	516	gtk_editable_paste_clipboard( GTK_EDITABLE(entry), 0 );
	517	#endif
	518	}
	519
	520	void wxComboBox::SetInsertionPoint( long pos )
	521	{
	522	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	523
	524	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	525	gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
	526	}
	527
	528	void wxComboBox::SetInsertionPointEnd()
	529	{
	530	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	531
	532	SetInsertionPoint( -1 );
	533	}
	534
	535	long wxComboBox::GetInsertionPoint() const
	536	{
	537	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	538	return (long) GTK_EDITABLE(entry)->current_pos;
	539	}
	540
	541	long wxComboBox::GetLastPosition() const
	542	{
	543	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	544	int pos = GTK_ENTRY(entry)->text_length;
	545	return (long) pos-1;
	546	}
	547
	548	void wxComboBox::Replace( long from, long to, const wxString& value )
	549	{
	550	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	551	// FIXME: not quite sure how to do this method right in multibyte mode
	552
	553	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	554	gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
	555	if (value.IsNull()) return;
	556	gint pos = (gint)to;
	557	gtk_editable_insert_text( GTK_EDITABLE(entry), value.mbc_str(), value.Length(), &pos );
	558	}
	559
	560	void wxComboBox::Remove(long from, long to)
	561	{
	562	wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
	563
	564	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	565	gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
	566	}
	567
	568	void wxComboBox::SetSelection( long from, long to )
	569	{
	570	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	571	gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
	572	}
	573
	574	void wxComboBox::SetEditable( bool editable )
	575	{
	576	GtkWidget *entry = GTK_COMBO(m_widget)->entry;
	577	gtk_entry_set_editable( GTK_ENTRY(entry), editable );
	578	}
	579
	580	void wxComboBox::OnChar( wxKeyEvent &event )
	581	{
	582	if ( event.KeyCode() == WXK_RETURN )
	583	{
	584	wxString value = GetValue();
	585
	586	if ( Number() == 0 )
	587	{
	588	// make Enter generate "selected" event if there is only one item
	589	// in the combobox - without it, it's impossible to select it at
	590	// all!
	591	wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
	592	event.SetInt( 0 );
	593	event.SetString( value );
	594	event.SetEventObject( this );
	595	GetEventHandler()->ProcessEvent( event );
	596	}
	597	else
	598	{
	599	// add the item to the list if it's not there yet
	600	if ( FindString(value) == wxNOT_FOUND )
	601	{
	602	Append(value);
	603	SetStringSelection(value);
	604
	605	// and generate the selected event for it
	606	wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
	607	event.SetInt( Number() - 1 );
	608	event.SetString( value );
	609	event.SetEventObject( this );
	610	GetEventHandler()->ProcessEvent( event );
	611	}
	612	//else: do nothing, this will open the listbox
	613	}
	614	}
	615
	616	event.Skip();
	617	}
	618
	619	void wxComboBox::DisableEvents()
	620	{
	621	GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
	622	GList *child = list->children;
	623	while (child)
	624	{
	625	gtk_signal_disconnect_by_func( GTK_OBJECT(child->data),
	626	GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
	627
	628	child = child->next;
	629	}
	630	}
	631
	632	void wxComboBox::EnableEvents()
	633	{
	634	GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
	635	GList *child = list->children;
	636	while (child)
	637	{
	638	gtk_signal_connect( GTK_OBJECT(child->data), "select",
	639	GTK_SIGNAL_FUNC(gtk_combo_clicked_callback), (gpointer)this );
	640
	641	child = child->next;
	642	}
	643	}
	644
	645	void wxComboBox::OnSize( wxSizeEvent &event )
	646	{
	647	event.Skip();
	648
	649	#if 0
	650	int w = 21;
	651	gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
	652
	653	gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
	654	gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
	655	#endif // 0
	656	}
	657
	658	void wxComboBox::ApplyWidgetStyle()
	659	{
	660	SetWidgetStyle();
	661
	662	// gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
	663	gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
	664	gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
	665
	666	GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
	667	GList *child = list->children;
	668	while (child)
	669	{
	670	gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
	671
	672	GtkBin *bin = GTK_BIN(child->data);
	673	gtk_widget_set_style( bin->child, m_widgetStyle );
	674
	675	child = child->next;
	676	}
	677	}
	678
	679	GtkWidget* wxComboBox::GetConnectWidget()
	680	{
	681	return GTK_COMBO(m_widget)->entry;
	682	}
	683
	684	bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
	685	{
	686	return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) \|\|
	687	(window == GTK_COMBO(m_widget)->button->window ) );
	688	}
	689
	690	wxSize wxComboBox::DoGetBestSize() const
	691	{
	692	wxSize ret( wxControl::DoGetBestSize() );
	693
	694	// we know better our horizontal extent: it depends on the longest string
	695	// in the combobox
	696	ret.x = 0;
	697	if ( m_widget )
	698	{
	699	GdkFont *font = m_font.GetInternalFont();
	700
	701	wxCoord width;
	702	size_t count = Number();
	703	for ( size_t n = 0; n < count; n++ )
	704	{
	705	width = (wxCoord)gdk_string_width(font, GetString(n).mbc_str());
	706	if ( width > ret.x )
	707	ret.x = width;
	708	}
	709	}
	710
	711	// empty combobox should have some reasonable default size too
	712	if ( ret.x < 100 )
	713	ret.x = 100;
	714	return ret;
	715	}
	716
	717	#endif