Files
wxWidgets/src/gtk/combobox.cpp
Robert Roebling f11270d478 Do dialog's default action (mostly "OK") if
ENTER was hit in a combobox and the
    TEXT_ENTER event was not handled. MSW
    seems to be doing something similar.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@19412 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2003-03-02 11:07:45 +00:00

747 lines
20 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// 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 "wx/gtk/private.h"
//-----------------------------------------------------------------------------
// idle system
//-----------------------------------------------------------------------------
extern void wxapp_install_idle_handler();
extern bool g_isIdle;
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
//-----------------------------------------------------------------------------
// "select-child" - click/cursor get select-child, changed, select-child
//-----------------------------------------------------------------------------
static void
gtk_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
{
if (g_isIdle) wxapp_install_idle_handler();
if (!combo->m_hasVMT) return;
if (g_blockEventsOnDrag) return;
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" - typing and list item matches get changed, select-child
// if it doesn't match an item then just get a single 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 );
}
static void
gtk_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
{
}
//-----------------------------------------------------------------------------
// 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();
GtkCombo *combo = GTK_COMBO(m_widget);
// Disable GTK's broken events ...
gtk_signal_disconnect( GTK_OBJECT(combo->entry), combo->entry_change_id );
// ... and add surogate handler.
combo->entry_change_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "changed",
(GtkSignalFunc) gtk_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 );
GtkWidget *list = GTK_COMBO(m_widget)->list;
#ifndef __WXGTK20__
// gtk_list_set_selection_mode( GTK_LIST(list), GTK_SELECTION_MULTIPLE );
#endif
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 );
m_focusWidget = combo->entry;
PostCreation();
ConnectWidget( combo->button );
// MSW's combo box shows the value and the selection is -1
gtk_entry_set_text( GTK_ENTRY(combo->entry), wxGTK_CONV(value) );
gtk_list_unselect_all( GTK_LIST(combo->list) );
if (style & wxCB_READONLY)
gtk_entry_set_editable( GTK_ENTRY( combo->entry ), FALSE );
gtk_signal_connect( GTK_OBJECT(combo->entry), "changed",
GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
gtk_signal_connect( GTK_OBJECT(combo->list), "select-child",
GTK_SIGNAL_FUNC(gtk_combo_select_child_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 );
// This is required for tool bar support
gtk_widget_set_usize( m_widget, new_size.x, new_size.y );
}
SetBackgroundColour( wxSystemSettings::GetColour( 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::SetFocus()
{
if ( m_hasFocus )
{
// don't do anything if we already have focus
return;
}
gtk_widget_grab_focus( m_focusWidget );
}
void wxComboBox::AppendCommon( const wxString &item )
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
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 );
if (m_widgetStyle) ApplyWidgetStyle();
}
gtk_widget_show( list_item );
EnableEvents();
}
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_clientObjectList.Nth( n );
if (!node) return (wxClientData*) NULL;
return (wxClientData*) node->Data();
}
void wxComboBox::Clear()
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
DisableEvents();
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();
EnableEvents();
}
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;
}
DisableEvents();
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 );
EnableEvents();
}
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 );
#ifdef __WXGTK20__
wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
#else
wxString str( label->label );
#endif
if (item == str)
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 );
#ifdef __WXGTK20__
str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
#else
str = wxString( label->label );
#endif
}
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 );
GtkLabel *label = GTK_LABEL( bin->child );
#ifdef __WXGTK20__
wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
#else
wxString tmp( label->label );
#endif
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
{
GtkEntry *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") );
GtkWidget *entry = GTK_COMBO(m_widget)->entry;
wxString tmp = wxT("");
if (!value.IsNull()) tmp = value;
gtk_entry_set_text( GTK_ENTRY(entry), wxGTK_CONV( tmp ) );
}
void wxComboBox::Copy()
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
GtkWidget *entry = GTK_COMBO(m_widget)->entry;
gtk_editable_copy_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
}
void wxComboBox::Cut()
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
GtkWidget *entry = GTK_COMBO(m_widget)->entry;
gtk_editable_cut_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
}
void wxComboBox::Paste()
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
GtkWidget *entry = GTK_COMBO(m_widget)->entry;
gtk_editable_paste_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG);
}
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
{
return (long) GET_EDITABLE_POS( GTK_COMBO(m_widget)->entry );
}
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") );
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;
#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::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 )
{
// GTK automatically selects an item if its in the list
wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, GetId());
event.SetString( GetValue() );
event.SetInt( GetSelection() );
event.SetEventObject( this );
if (!GetEventHandler()->ProcessEvent( event ))
{
// 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()
{
gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->list),
GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->entry),
GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
}
void wxComboBox::EnableEvents()
{
gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->list), "select-child",
GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
}
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 )
{
int width;
size_t count = GetCount();
for ( size_t n = 0; n < count; n++ )
{
GetTextExtent( GetString(n), &width, NULL, NULL, NULL, &m_font );
if ( width > ret.x )
ret.x = width;
}
}
// empty combobox should have some reasonable default size too
if ( ret.x < 100 )
ret.x = 100;
return ret;
}
#endif