Files
wxWidgets/src/gtk1/combobox.cpp
Ron Lee 631a05be91 GTK Combobox and Listbox aren't realized until actually
visible, so a list_item created before that would
receive a default style instead of the control's style.

Instead of calling ApplyWidgetStyle() which would
iterate all items, only the newly created item will
receive the current style to speed things up.

Thanks to Andreas Pflug.  Closes 984861


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29032 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2004-09-05 10:08:19 +00:00

798 lines
22 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: combobox.cpp
// Purpose:
// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "combobox.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/combobox.h"
#if wxUSE_COMBOBOX
#include "wx/settings.h"
#include "wx/arrstr.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,
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_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(size);
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 );
SetBestSize(size); // need this too because this is a wxControlWithItems
// This is required for tool bar support
wxSize setsize = GetSize();
gtk_widget_set_usize( m_widget, setsize.x, setsize.y );
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") );
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 );
const int count = GetCount();
if ( (int)m_clientDataList.GetCount() < count )
m_clientDataList.Append( (wxObject*) NULL );
if ( (int)m_clientObjectList.GetCount() < count )
m_clientObjectList.Append( (wxObject*) NULL );
EnableEvents();
return count - 1;
}
int wxComboBox::DoInsert( const wxString &item, int pos )
{
wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
wxT("can't insert into sorted list"));
wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
int count = GetCount();
wxCHECK_MSG( (pos >= 0) && (pos <= count), -1, wxT("invalid index") );
if (pos == count)
return Append(item);
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 );
count = GetCount();
if ( (int)m_clientDataList.GetCount() < count )
m_clientDataList.Insert( pos, (wxObject*) NULL );
if ( (int)m_clientObjectList.GetCount() < count )
m_clientObjectList.Insert( pos, (wxObject*) NULL );
EnableEvents();
return pos;
}
void wxComboBox::DoSetItemClientData( 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( 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( 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( 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();
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();
if (cd) delete cd;
node = node->GetNext();
}
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 );
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 );
EnableEvents();
}
void wxComboBox::SetString(int n, const wxString &text)
{
wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
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") );
}
}
int wxComboBox::FindString( const wxString &item ) const
{
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::GetCount() 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();
}
bool wxComboBox::SetStringSelection( const wxString &string )
{
wxCHECK_MSG( m_widget != NULL, false, wxT("invalid combobox") );
int res = FindString( string );
if (res == -1) return false;
SetSelection( res );
return true;
}
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") );
if ( pos == GetLastPosition() )
pos = -1;
GtkWidget *entry = GTK_COMBO(m_widget)->entry;
gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
}
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::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.GetKeyCode() == 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::DoApplyWidgetStyle(GtkRcStyle *style)
{
// 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()
{
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 );
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))
{
return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
}
#endif