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a1abca322fd7a9a7abe6cc0b144987786faa0f05
wxWidgets/src/gtk/combobox.cpp
Paul Cornett a1abca322f Reorganize idle system code. 
Installing idle handler from GTK callbacks is no longer necessary.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45537 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2007-04-19 16:58:07 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk/combobox.cpp
// Purpose:
// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_COMBOBOX
#include "wx/combobox.h"
#ifndef WX_PRECOMP
#include "wx/intl.h"
#include "wx/settings.h"
#include "wx/textctrl.h" // for wxEVT_COMMAND_TEXT_UPDATED
#include "wx/arrstr.h"
#endif
// We use GtkCombo which has been deprecated since GTK+ 2.3.0
// in favour of GtkComboBox for <GTK2.4 runtime
// We also use GtkList
#ifdef GTK_DISABLE_DEPRECATED
#undef GTK_DISABLE_DEPRECATED
#endif
#include "wx/gtk/private.h"
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
static int g_SelectionBeforePopup = wxID_NONE; // this means the popup is hidden
//-----------------------------------------------------------------------------
// "changed" - typing and list item matches get changed, select-child
// if it doesn't match an item then just get a single changed
//-----------------------------------------------------------------------------
extern "C" {
static void
gtkcombo_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
{
if (combo->m_ignoreNextUpdate)
{
combo->m_ignoreNextUpdate = false;
return;
}
if (!combo->m_hasVMT) return;
wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
event.SetString( combo->GetValue() );
event.SetEventObject( combo );
combo->GetEventHandler()->ProcessEvent( event );
}
}
extern "C" {
static void
gtkcombo_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
{
}
}
extern "C" {
static void
gtkcombo_popup_hide_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
{
// when the popup is hidden, throw a SELECTED event only if the combobox
// selection changed.
const int curSelection = combo->GetCurrentSelection();
const bool hasChanged = curSelection != g_SelectionBeforePopup;
// reset the selection flag to value meaning that it is hidden and do it
// now, before generating the events, so that GetSelection() returns the
// new value from the event handler
g_SelectionBeforePopup = wxID_NONE;
if ( hasChanged )
{
wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
event.SetInt( curSelection );
event.SetString( combo->GetStringSelection() );
event.SetEventObject( combo );
combo->GetEventHandler()->ProcessEvent( event );
// for consistency with the other ports, send TEXT event
wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
event2.SetString( combo->GetStringSelection() );
event2.SetEventObject( combo );
combo->GetEventHandler()->ProcessEvent( event2 );
}
}
}
extern "C" {
static void
gtkcombo_popup_show_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
{
// store the combobox selection value before the popup is shown
g_SelectionBeforePopup = combo->GetCurrentSelection();
}
}
//-----------------------------------------------------------------------------
// "select-child" - click/cursor get select-child, changed, select-child
//-----------------------------------------------------------------------------
extern "C" {
static void
gtkcombo_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
{
if (!combo->m_hasVMT) return;
if (g_blockEventsOnDrag) return;
int curSelection = combo->GetCurrentSelection();
if (combo->m_prevSelection == curSelection) return;
GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
combo->m_prevSelection = curSelection;
// Quickly set the value of the combo box
// as GTK+ does that only AFTER the event
// is sent.
g_signal_handlers_disconnect_by_func (GTK_COMBO (combo->GetHandle())->entry,
(gpointer) gtkcombo_text_changed_callback,
combo);
combo->SetValue( combo->GetStringSelection() );
g_signal_connect_after (GTK_COMBO (combo->GetHandle())->entry, "changed",
G_CALLBACK (gtkcombo_text_changed_callback), combo);
// throw a SELECTED event only if the combobox popup is hidden (wxID_NONE)
// because when combobox popup is shown, gtkcombo_combo_select_child_callback is
// called each times the mouse is over an item with a pressed button so a lot
// of SELECTED event could be generated if the user keep the mouse button down
// and select other items ...
if (g_SelectionBeforePopup == wxID_NONE)
{
wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
event.SetInt( curSelection );
event.SetString( combo->GetStringSelection() );
event.SetEventObject( combo );
combo->GetEventHandler()->ProcessEvent( event );
// for consistency with the other ports, don't generate text update
// events while the user is browsing the combobox neither
wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
event2.SetString( combo->GetValue() );
event2.SetEventObject( combo );
combo->GetEventHandler()->ProcessEvent( event2 );
}
}
}
#ifdef __WXGTK24__
extern "C" {
static void
gtkcombobox_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
{
if (!combo->m_hasVMT) return;
wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
event.SetString( combo->GetValue() );
event.SetEventObject( combo );
combo->GetEventHandler()->ProcessEvent( event );
}
}
extern "C" {
static void
gtkcombobox_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
{
if (!combo->m_hasVMT) return;
if (combo->GetSelection() == -1)
return;
wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
event.SetInt( combo->GetSelection() );
event.SetString( combo->GetStringSelection() );
event.SetEventObject( combo );
combo->GetEventHandler()->ProcessEvent( event );
}
}
#endif
//-----------------------------------------------------------------------------
// wxComboBox
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
BEGIN_EVENT_TABLE(wxComboBox, wxControl)
EVT_SIZE(wxComboBox::OnSize)
EVT_CHAR(wxComboBox::OnChar)
EVT_MENU(wxID_CUT, wxComboBox::OnCut)
EVT_MENU(wxID_COPY, wxComboBox::OnCopy)
EVT_MENU(wxID_PASTE, wxComboBox::OnPaste)
EVT_MENU(wxID_UNDO, wxComboBox::OnUndo)
EVT_MENU(wxID_REDO, wxComboBox::OnRedo)
EVT_MENU(wxID_CLEAR, wxComboBox::OnDelete)
EVT_MENU(wxID_SELECTALL, wxComboBox::OnSelectAll)
EVT_UPDATE_UI(wxID_CUT, wxComboBox::OnUpdateCut)
EVT_UPDATE_UI(wxID_COPY, wxComboBox::OnUpdateCopy)
EVT_UPDATE_UI(wxID_PASTE, wxComboBox::OnUpdatePaste)
EVT_UPDATE_UI(wxID_UNDO, wxComboBox::OnUpdateUndo)
EVT_UPDATE_UI(wxID_REDO, wxComboBox::OnUpdateRedo)
EVT_UPDATE_UI(wxID_CLEAR, wxComboBox::OnUpdateDelete)
EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
END_EVENT_TABLE()
bool wxComboBox::Create( wxWindow *parent, wxWindowID id,
const wxString& value,
const wxPoint& pos, const wxSize& size,
const wxArrayString& choices,
long style, const wxValidator& validator,
const wxString& name )
{
wxCArrayString chs(choices);
return Create( parent, id, value, pos, size, chs.GetCount(),
chs.GetStrings(), style, validator, name );
}
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_ignoreNextUpdate = false;
m_needParent = 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;
}
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
m_widget = gtk_combo_box_entry_new_text();
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
gtk_entry_set_editable( GTK_ENTRY( GTK_BIN(m_widget)->child ), TRUE );
for (int i = 0; i < n; i++)
{
gtk_combo_box_append_text( combobox, wxGTK_CONV( choices[i] ) );
m_clientDataList.Append( (wxObject*)NULL );
m_clientObjectList.Append( (wxObject*)NULL );
}
}
else
#endif
{
m_widget = gtk_combo_new();
GtkCombo* combo = GTK_COMBO(m_widget);
// Disable GTK's broken events ...
g_signal_handler_disconnect (combo->entry, combo->entry_change_id);
// ... and add surrogate handler.
combo->entry_change_id = g_signal_connect (combo->entry, "changed",
G_CALLBACK (gtkcombo_dummy_callback),
combo);
// 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 );
if (style & wxNO_BORDER)
g_object_set (combo->entry, "has-frame", FALSE, NULL );
GtkWidget *list = combo->list;
for (int i = 0; i < n; i++)
{
GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( choices[i] ) );
m_clientDataList.Append( (wxObject*)NULL );
m_clientObjectList.Append( (wxObject*)NULL );
gtk_container_add( GTK_CONTAINER(list), list_item );
gtk_widget_show( list_item );
}
}
m_parent->DoAddChild( this );
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
m_focusWidget = GTK_WIDGET( entry );
PostCreation(size);
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
ConnectWidget( m_widget );
else
#endif
ConnectWidget( GTK_COMBO(m_widget)->button );
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
gtk_entry_set_text( entry, wxGTK_CONV(value) );
if (style & wxCB_READONLY)
gtk_entry_set_editable( entry, FALSE );
g_signal_connect_after (entry, "changed",
G_CALLBACK (gtkcombobox_text_changed_callback), this);
g_signal_connect_after (m_widget, "changed",
G_CALLBACK (gtkcombobox_changed_callback), this);
}
else
#endif
{
GtkCombo *combo = GTK_COMBO(m_widget);
// MSW's combo box shows the value and the selection is -1
gtk_entry_set_text( entry, wxGTK_CONV(value) );
gtk_list_unselect_all( GTK_LIST(combo->list) );
if (style & wxCB_READONLY)
gtk_entry_set_editable( entry, FALSE );
// "show" and "hide" events are generated when user click on the combobox button which popups a list
// this list is the "popwin" gtk widget
g_signal_connect (GTK_COMBO(combo)->popwin, "hide",
G_CALLBACK (gtkcombo_popup_hide_callback), this);
g_signal_connect (GTK_COMBO(combo)->popwin, "show",
G_CALLBACK (gtkcombo_popup_show_callback), this);
g_signal_connect_after (combo->list, "select-child",
G_CALLBACK (gtkcombo_combo_select_child_callback),
this);
g_signal_connect_after (entry, "changed",
G_CALLBACK (gtkcombo_text_changed_callback), this);
}
SetInitialSize(size); // need this too because this is a wxControlWithItems
return true;
}
wxComboBox::~wxComboBox()
{
wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
while (node)
{
wxClientData *cd = (wxClientData*)node->GetData();
if (cd) delete cd;
node = node->GetNext();
}
m_clientObjectList.Clear();
m_clientDataList.Clear();
}
void wxComboBox::SetFocus()
{
if ( m_hasFocus )
{
// don't do anything if we already have focus
return;
}
gtk_widget_grab_focus( m_focusWidget );
}
int wxComboBox::DoAppend( const wxString &item )
{
wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
gtk_combo_box_append_text( combobox, wxGTK_CONV( item ) );
}
else
#endif
{
DisableEvents();
GtkWidget *list = GTK_COMBO(m_widget)->list;
GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
gtk_container_add( GTK_CONTAINER(list), list_item );
if (GTK_WIDGET_REALIZED(m_widget))
{
gtk_widget_realize( list_item );
gtk_widget_realize( GTK_BIN(list_item)->child );
}
// Apply current widget style to the new list_item
GtkRcStyle *style = CreateWidgetStyle();
if (style)
{
gtk_widget_modify_style( GTK_WIDGET( list_item ), style );
GtkBin *bin = GTK_BIN( list_item );
GtkWidget *label = GTK_WIDGET( bin->child );
gtk_widget_modify_style( label, style );
gtk_rc_style_unref( style );
}
gtk_widget_show( list_item );
EnableEvents();
}
const unsigned int count = GetCount();
if ( m_clientDataList.GetCount() < count )
m_clientDataList.Append( (wxObject*) NULL );
if ( m_clientObjectList.GetCount() < count )
m_clientObjectList.Append( (wxObject*) NULL );
InvalidateBestSize();
return count - 1;
}
int wxComboBox::DoInsert(const wxString &item, unsigned int pos)
{
wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
wxT("can't insert into sorted list"));
wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
wxCHECK_MSG( IsValidInsert(pos), -1, wxT("invalid index") );
unsigned int count = GetCount();
if (pos == count)
return Append(item);
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
gtk_combo_box_insert_text( combobox, pos, wxGTK_CONV( item ) );
}
else
#endif
{
DisableEvents();
GtkWidget *list = GTK_COMBO(m_widget)->list;
GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
GList *gitem_list = g_list_alloc ();
gitem_list->data = list_item;
gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
if (GTK_WIDGET_REALIZED(m_widget))
{
gtk_widget_realize( list_item );
gtk_widget_realize( GTK_BIN(list_item)->child );
ApplyWidgetStyle();
}
gtk_widget_show( list_item );
EnableEvents();
}
count = GetCount();
if ( m_clientDataList.GetCount() < count )
m_clientDataList.Insert( pos, (wxObject*) NULL );
if ( m_clientObjectList.GetCount() < count )
m_clientObjectList.Insert( pos, (wxObject*) NULL );
InvalidateBestSize();
return pos;
}
void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
wxList::compatibility_iterator node = m_clientDataList.Item( n );
if (!node) return;
node->SetData( (wxObject*) clientData );
}
void* wxComboBox::DoGetItemClientData(unsigned int n) const
{
wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
wxList::compatibility_iterator node = m_clientDataList.Item( n );
return node ? node->GetData() : NULL;
}
void wxComboBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
wxList::compatibility_iterator node = m_clientObjectList.Item( n );
if (!node) return;
// wxItemContainer already deletes data for us
node->SetData( (wxObject*) clientData );
}
wxClientData* wxComboBox::DoGetItemClientObject(unsigned int n) const
{
wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
wxList::compatibility_iterator node = m_clientObjectList.Item( n );
return node ? (wxClientData*) node->GetData() : NULL;
}
void wxComboBox::Clear()
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
DisableEvents();
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
const unsigned int count = GetCount();
for (unsigned int i = 0; i < count; i++)
gtk_combo_box_remove_text( combobox, 0 );
}
else // GTK+ < 2.4.0
#endif // __WXGTK24__
{
GtkWidget *list = GTK_COMBO(m_widget)->list;
gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
}
wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
while (node)
{
wxClientData *cd = (wxClientData*)node->GetData();
delete cd;
node = node->GetNext();
}
m_clientObjectList.Clear();
m_clientDataList.Clear();
EnableEvents();
InvalidateBestSize();
}
void wxComboBox::Delete(unsigned int n)
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
wxCHECK_RET( IsValid(n), wxT("invalid index") );
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
gtk_combo_box_remove_text( combobox, n );
}
else
#endif
{
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;
}
DisableEvents();
GList *list = g_list_append( (GList*) NULL, child->data );
gtk_list_remove_items( listbox, list );
g_list_free( list );
EnableEvents();
}
wxList::compatibility_iterator node = m_clientObjectList.Item( n );
if (node)
{
wxClientData *cd = (wxClientData*)node->GetData();
if (cd) delete cd;
m_clientObjectList.Erase( node );
}
node = m_clientDataList.Item( n );
if (node)
m_clientDataList.Erase( node );
InvalidateBestSize();
}
void wxComboBox::SetString(unsigned int n, const wxString &text)
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
wxCHECK_RET( IsValid(n), wxT("invalid index") );
GtkTreeModel *model = gtk_combo_box_get_model( combobox );
GtkTreeIter iter;
if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
{
GValue value = { 0, };
g_value_init( &value, G_TYPE_STRING );
g_value_set_string( &value, wxGTK_CONV( text ) );
gtk_list_store_set_value( GTK_LIST_STORE(model), &iter, 0, &value );
g_value_unset( &value );
}
}
else
#endif
{
GtkWidget *list = GTK_COMBO(m_widget)->list;
GList *child = g_list_nth( GTK_LIST(list)->children, n );
if (child)
{
GtkBin *bin = GTK_BIN( child->data );
GtkLabel *label = GTK_LABEL( bin->child );
gtk_label_set_text(label, wxGTK_CONV(text));
}
else
{
wxFAIL_MSG( wxT("wxComboBox: wrong index") );
}
}
InvalidateBestSize();
}
int wxComboBox::FindString( const wxString &item, bool bCase ) const
{
wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid combobox") );
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
GtkTreeModel* model = gtk_combo_box_get_model( combobox );
GtkTreeIter iter;
gtk_tree_model_get_iter_first( model, &iter );
if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
return -1;
int count = 0;
do
{
GValue value = { 0, };
gtk_tree_model_get_value( model, &iter, 0, &value );
wxString str = wxGTK_CONV_BACK( g_value_get_string( &value ) );
g_value_unset( &value );
if (item.IsSameAs( str, bCase ) )
return count;
count++;
} while (gtk_tree_model_iter_next( model, &iter ));
}
else
#endif
{
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 );
wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
if (item.IsSameAs( str , bCase ) )
return count;
count++;
child = child->next;
}
}
return wxNOT_FOUND;
}
int wxComboBox::GetSelection() const
{
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
return gtk_combo_box_get_active( combobox );
}
else
#endif
// if the popup is currently opened, use the selection as it had been
// before it dropped down
return g_SelectionBeforePopup == wxID_NONE ? GetCurrentSelection()
: g_SelectionBeforePopup;
}
int wxComboBox::GetCurrentSelection() const
{
wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
return gtk_combo_box_get_active( combobox );
}
else
#endif
{
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(unsigned int n) const
{
wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
wxString str;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
GtkTreeModel *model = gtk_combo_box_get_model( combobox );
GtkTreeIter iter;
if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
{
GValue value = { 0, };
gtk_tree_model_get_value( model, &iter, 0, &value );
wxString tmp = wxGTK_CONV_BACK( g_value_get_string( &value ) );
g_value_unset( &value );
return tmp;
}
}
else
#endif
{
GtkWidget *list = GTK_COMBO(m_widget)->list;
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 = wxGTK_CONV_BACK( gtk_label_get_text(label) );
}
else
{
wxFAIL_MSG( wxT("wxComboBox: wrong index") );
}
}
return str;
}
wxString wxComboBox::GetStringSelection() const
{
wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
int sel = gtk_combo_box_get_active( combobox );
if (sel == -1)
return wxEmptyString;
return GetString(sel);
}
else
#endif
{
GtkWidget *list = GTK_COMBO(m_widget)->list;
GList *selection = GTK_LIST(list)->selection;
if (selection)
{
GtkBin *bin = GTK_BIN( selection->data );
GtkLabel *label = GTK_LABEL( bin->child );
wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
return tmp;
}
wxFAIL_MSG( wxT("wxComboBox: no selection") );
}
return wxEmptyString;
}
unsigned int wxComboBox::GetCount() const
{
wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
GtkTreeModel* model = gtk_combo_box_get_model( combobox );
GtkTreeIter iter;
gtk_tree_model_get_iter_first( model, &iter );
if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
return 0;
unsigned int ret = 1;
while (gtk_tree_model_iter_next( model, &iter ))
ret++;
return ret;
}
else
#endif
{
GtkWidget *list = GTK_COMBO(m_widget)->list;
GList *child = GTK_LIST(list)->children;
unsigned int count = 0;
while (child)
{
count++;
child = child->next;
}
return count;
}
return 0;
}
void wxComboBox::SetSelection( int n )
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
DisableEvents();
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
gtk_combo_box_set_active( combobox, n );
}
else
#endif
{
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();
}
wxString wxComboBox::GetValue() const
{
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
#if 0
for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
{
wxChar c = tmp[i];
printf( "%d ", (int) (c) );
}
printf( "\n" );
#endif
return tmp;
}
void wxComboBox::SetValue( const wxString& value )
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
wxString tmp;
if (!value.IsNull()) tmp = value;
gtk_entry_set_text( entry, wxGTK_CONV( tmp ) );
InvalidateBestSize();
}
void wxComboBox::Copy()
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
gtk_editable_copy_clipboard(GTK_EDITABLE(entry));
}
void wxComboBox::Cut()
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
gtk_editable_cut_clipboard(GTK_EDITABLE(entry));
}
void wxComboBox::Paste()
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
gtk_editable_paste_clipboard(GTK_EDITABLE(entry));
}
void wxComboBox::Undo()
{
// TODO
}
void wxComboBox::Redo()
{
// TODO
}
void wxComboBox::SelectAll()
{
SetSelection(0, GetLastPosition());
}
bool wxComboBox::CanUndo() const
{
// TODO
return false;
}
bool wxComboBox::CanRedo() const
{
// TODO
return false;
}
bool wxComboBox::HasSelection() const
{
long from, to;
GetSelection(&from, &to);
return from != to;
}
bool wxComboBox::CanCopy() const
{
// Can copy if there's a selection
return HasSelection();
}
bool wxComboBox::CanCut() const
{
return CanCopy() && IsEditable();
}
bool wxComboBox::CanPaste() const
{
// TODO: check for text on the clipboard
return IsEditable() ;
}
bool wxComboBox::IsEditable() const
{
return !HasFlag(wxCB_READONLY);
}
void wxComboBox::SetInsertionPoint( long pos )
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
if ( pos == GetLastPosition() )
pos = -1;
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
gtk_entry_set_position( entry, (int)pos );
}
long wxComboBox::GetInsertionPoint() const
{
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
return (long) gtk_editable_get_position(GTK_EDITABLE(entry));
}
wxTextPos wxComboBox::GetLastPosition() const
{
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
int pos = 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") );
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_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;
#if wxUSE_UNICODE
wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
#else
gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.length(), &pos );
#endif
}
void wxComboBox::SetSelection( long from, long to )
{
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
}
void wxComboBox::GetSelection( long* from, long* to ) const
{
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
if (IsEditable())
{
GtkEditable *editable = GTK_EDITABLE(entry);
gint start, end;
gtk_editable_get_selection_bounds(editable, & start, & end);
*from = start;
*to = end;
}
}
void wxComboBox::SetEditable( bool editable )
{
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
gtk_entry_set_editable( GTK_ENTRY(entry), editable );
}
void wxComboBox::OnChar( wxKeyEvent &event )
{
if ( event.GetKeyCode() == WXK_RETURN )
{
// GTK automatically selects an item if its in the list
wxCommandEvent eventEnter(wxEVT_COMMAND_TEXT_ENTER, GetId());
eventEnter.SetString( GetValue() );
eventEnter.SetInt( GetSelection() );
eventEnter.SetEventObject( this );
if (!GetEventHandler()->ProcessEvent( eventEnter ))
{
// This will invoke the dialog default action, such
// as the clicking the default button.
wxWindow *top_frame = m_parent;
while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
top_frame = top_frame->GetParent();
if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
{
GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
if (window->default_widget)
gtk_widget_activate (window->default_widget);
}
}
// Catch GTK event so that GTK doesn't open the drop
// down list upon RETURN.
return;
}
event.Skip();
}
void wxComboBox::DisableEvents()
{
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
g_signal_handlers_disconnect_by_func (GTK_BIN(m_widget)->child,
(gpointer)gtkcombobox_text_changed_callback, this);
g_signal_handlers_disconnect_by_func (m_widget,
(gpointer)gtkcombobox_changed_callback, this);
}
else
#endif
{
g_signal_handlers_disconnect_by_func (GTK_COMBO(m_widget)->list,
(gpointer) gtkcombo_combo_select_child_callback, this);
g_signal_handlers_disconnect_by_func (GTK_COMBO(m_widget)->entry,
(gpointer) gtkcombo_text_changed_callback, this);
}
}
void wxComboBox::EnableEvents()
{
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
g_signal_connect_after (GTK_BIN(m_widget)->child, "changed",
G_CALLBACK (gtkcombobox_text_changed_callback), this);
g_signal_connect_after (m_widget, "changed",
G_CALLBACK (gtkcombobox_changed_callback), this);
}
else
#endif
{
g_signal_connect_after (GTK_COMBO(m_widget)->list, "select-child",
G_CALLBACK (gtkcombo_combo_select_child_callback),
this);
g_signal_connect_after (GTK_COMBO(m_widget)->entry, "changed",
G_CALLBACK (gtkcombo_text_changed_callback),
this );
}
}
void wxComboBox::OnSize( wxSizeEvent &event )
{
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
// Do nothing
}
else
#endif
{
// NB: In some situations (e.g. on non-first page of a wizard, if the
// size used is default size), GtkCombo widget is resized correctly,
// but it's look is not updated, it's rendered as if it was much wider.
// No other widgets are affected, so it looks like a bug in GTK+.
// Manually requesting resize calculation (as gtk_pizza_set_size does)
// fixes it.
if (GTK_WIDGET_VISIBLE(m_widget))
gtk_widget_queue_resize(m_widget);
}
event.Skip();
}
void wxComboBox::DoApplyWidgetStyle(GtkRcStyle *style)
{
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
// Do nothing
}
else
#endif
{
// gtk_widget_modify_style( GTK_COMBO(m_widget)->button, syle );
gtk_widget_modify_style( GTK_COMBO(m_widget)->entry, style );
gtk_widget_modify_style( GTK_COMBO(m_widget)->list, style );
GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
GList *child = list->children;
while (child)
{
gtk_widget_modify_style( GTK_WIDGET(child->data), style );
GtkBin *bin = GTK_BIN(child->data);
gtk_widget_modify_style( bin->child, style );
child = child->next;
}
}
}
GtkWidget* wxComboBox::GetConnectWidget()
{
GtkEntry *entry = NULL;
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
else
#endif
entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
return GTK_WIDGET( entry );
}
GdkWindow *wxComboBox::GTKGetWindow(wxArrayGdkWindows& windows) const
{
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
{
wxUnusedVar(windows);
return GTK_ENTRY(GTK_BIN(m_widget)->child)->text_area;
}
else
#endif // GTK+ 2.4
{
windows.push_back(GTK_ENTRY(GTK_COMBO(m_widget)->entry)->text_area);
windows.push_back(GTK_COMBO(m_widget)->button->window);
// indicate that we return multiple windows in the windows array
return NULL;
}
}
wxSize wxComboBox::DoGetBestSize() const
{
wxSize ret( wxControl::DoGetBestSize() );
// we know better our horizontal extent: it depends on the longest string
// in the combobox
if ( m_widget )
{
int width;
unsigned int count = GetCount();
for ( unsigned int n = 0; n < count; n++ )
{
GetTextExtent(GetString(n), &width, NULL, NULL, NULL );
if ( width > ret.x )
ret.x = width;
}
}
// empty combobox should have some reasonable default size too
if ( ret.x < 100 )
ret.x = 100;
CacheBestSize(ret);
return ret;
}
// static
wxVisualAttributes
wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
{
#ifdef __WXGTK24__
if (!gtk_check_version(2,4,0))
return GetDefaultAttributesFromGTKWidget(gtk_combo_box_entry_new, true);
else
#endif
return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
}
// ----------------------------------------------------------------------------
// standard event handling
// ----------------------------------------------------------------------------
void wxComboBox::OnCut(wxCommandEvent& WXUNUSED(event))
{
Cut();
}
void wxComboBox::OnCopy(wxCommandEvent& WXUNUSED(event))
{
Copy();
}
void wxComboBox::OnPaste(wxCommandEvent& WXUNUSED(event))
{
Paste();
}
void wxComboBox::OnUndo(wxCommandEvent& WXUNUSED(event))
{
Undo();
}
void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
{
Redo();
}
void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
{
long from, to;
GetSelection(& from, & to);
if (from != -1 && to != -1)
Remove(from, to);
}
void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
{
SetSelection(-1, -1);
}
void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
{
event.Enable( CanCut() );
}
void wxComboBox::OnUpdateCopy(wxUpdateUIEvent& event)
{
event.Enable( CanCopy() );
}
void wxComboBox::OnUpdatePaste(wxUpdateUIEvent& event)
{
event.Enable( CanPaste() );
}
void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event)
{
event.Enable( CanUndo() );
}
void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event)
{
event.Enable( CanRedo() );
}
void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
{
event.Enable(HasSelection() && IsEditable()) ;
}
void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
{
event.Enable(GetLastPosition() > 0);
}
#endif
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