// Name: choice.cpp
// Purpose:
// Author: Robert Roebling
-// Created: 01/02/97
-// Id:
-// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence: wxWindows licence
+// Id: $Id$
+// Copyright: (c) 1998 Robert Roebling
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#pragma implementation "choice.h"
#endif
+#include "wx/defs.h"
+
+#if wxUSE_CHOICE
+
#include "wx/choice.h"
+#include "wx/gtk/private.h"
+
//-----------------------------------------------------------------------------
-// wxChoice
+// idle system
+//-----------------------------------------------------------------------------
+
+extern void wxapp_install_idle_handler();
+extern bool g_isIdle;
+
+//-----------------------------------------------------------------------------
+// data
//-----------------------------------------------------------------------------
-void gtk_choice_clicked_callback( GtkWidget *WXUNUSED(widget), gpointer data )
+extern bool g_blockEventsOnDrag;
+
+//-----------------------------------------------------------------------------
+// "activate"
+//-----------------------------------------------------------------------------
+
+static void gtk_choice_clicked_callback( GtkWidget *WXUNUSED(widget), wxChoice *choice )
{
- wxChoice *choice = (wxChoice*)data;
- wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId());
- event.SetInt( choice->GetSelection() );
- wxString tmp( choice->GetStringSelection() );
- event.SetString( WXSTRINGCAST(tmp) );
- event.SetEventObject(choice);
- choice->ProcessEvent(event);
-};
+ if (g_isIdle)
+ wxapp_install_idle_handler();
+
+ if (!choice->m_hasVMT) return;
+
+ if (g_blockEventsOnDrag) return;
+
+ wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() );
+ int n = choice->GetSelection();
+
+ event.SetInt( n );
+ event.SetString( choice->GetStringSelection() );
+ event.SetEventObject(choice);
+
+ if ( choice->HasClientObjectData() )
+ event.SetClientObject( choice->GetClientObject(n) );
+ else if ( choice->HasClientUntypedData() )
+ event.SetClientData( choice->GetClientData(n) );
+
+ choice->GetEventHandler()->ProcessEvent(event);
+}
+//-----------------------------------------------------------------------------
+// wxChoice
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxChoice,wxControl)
-wxChoice::wxChoice(void)
-{
-};
-
-wxChoice::wxChoice( wxWindow *parent, const wxWindowID id,
- const wxPoint &pos, const wxSize &size,
- const int n, const wxString choices[],
- const long style, const wxString &name )
-{
- Create( parent, id, pos, size, n, choices, style, name );
-};
-
-bool wxChoice::Create( wxWindow *parent, const wxWindowID id,
- const wxPoint &pos, const wxSize &size,
- const int n, const wxString choices[],
- const long style, const wxString &name )
-{
- m_needParent = TRUE;
-
- PreCreation( parent, id, pos, size, style, name );
-
- m_widget = gtk_option_menu_new();
-
- wxSize newSize = size;
- if (newSize.x == -1) newSize.x = 80;
- if (newSize.y == -1) newSize.y = 26;
- SetSize( newSize.x, newSize.y );
-
- GtkWidget *menu;
- menu = gtk_menu_new();
-
- for (int i = 0; i < n; i++)
- {
- GtkWidget *item;
- item = gtk_menu_item_new_with_label( choices[i] );
- gtk_signal_connect( GTK_OBJECT( item ), "activate",
- GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
- gtk_menu_append( GTK_MENU(menu), item );
- gtk_widget_show( item );
- };
- gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
-
- PostCreation();
-
- Show( TRUE );
-
- return TRUE;
-};
-
-void wxChoice::Append( const wxString &item )
-{
- GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
- GtkWidget *menu_item;
- menu_item = gtk_menu_item_new_with_label( item );
- gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
- GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
- gtk_menu_append( GTK_MENU(menu), menu_item );
- gtk_widget_show( menu_item );
-};
-
-void wxChoice::Clear(void)
-{
- gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) );
- GtkWidget *menu = gtk_menu_new();
- gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
-};
+wxChoice::wxChoice()
+{
+ m_strings = (wxSortedArrayString *)NULL;
+}
+
+bool wxChoice::Create( wxWindow *parent, wxWindowID id,
+ const wxPoint &pos, const wxSize &size,
+ int n, const wxString choices[],
+ long style, const wxValidator& validator, const wxString &name )
+{
+ m_needParent = TRUE;
+#if (GTK_MINOR_VERSION > 0)
+ m_acceptsFocus = TRUE;
+#endif
+
+ if (!PreCreation( parent, pos, size ) ||
+ !CreateBase( parent, id, pos, size, style, validator, name ))
+ {
+ wxFAIL_MSG( wxT("wxChoice creation failed") );
+ return FALSE;
+ }
+
+ m_widget = gtk_option_menu_new();
+
+ if ( style & wxCB_SORT )
+ {
+ // if our m_strings != NULL, DoAppend() will check for it and insert
+ // items in the correct order
+ m_strings = new wxSortedArrayString;
+ }
+
+ GtkWidget *menu = gtk_menu_new();
+
+ for (int i = 0; i < n; i++)
+ {
+ GtkAppendHelper(menu, choices[i]);
+ }
+
+ gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
+
+ m_parent->DoAddChild( this );
+
+ PostCreation();
+
+ SetFont( parent->GetFont() );
+
+ SetBestSize(size);
+
+ SetBackgroundColour( parent->GetBackgroundColour() );
+ SetForegroundColour( parent->GetForegroundColour() );
+
+ Show( TRUE );
+
+ return TRUE;
+}
+
+wxChoice::~wxChoice()
+{
+ Clear();
+
+ delete m_strings;
+}
+
+int wxChoice::DoAppend( const wxString &item )
+{
+ wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );
+
+ GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
+
+ return GtkAppendHelper(menu, item);
+}
+
+void wxChoice::DoSetItemClientData( int n, void* clientData )
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );
+
+ wxNode *node = m_clientList.Nth( n );
+ wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientData") );
+
+ node->SetData( (wxObject*) clientData );
+}
+
+void* wxChoice::DoGetItemClientData( int n ) const
+{
+ wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid choice control") );
+
+ wxNode *node = m_clientList.Nth( n );
+ wxCHECK_MSG( node, NULL, wxT("invalid index in wxChoice::DoGetItemClientData") );
+
+ return node->Data();
+}
+
+void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") );
+
+ wxNode *node = m_clientList.Nth( n );
+ wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientObject") );
+
+ wxClientData *cd = (wxClientData*) node->Data();
+ delete cd;
+
+ node->SetData( (wxObject*) clientData );
+}
+
+wxClientData* wxChoice::DoGetItemClientObject( int n ) const
+{
+ wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid choice control") );
+
+ wxNode *node = m_clientList.Nth( n );
+ wxCHECK_MSG( node, (wxClientData *)NULL,
+ wxT("invalid index in wxChoice::DoGetItemClientObject") );
+
+ return (wxClientData*) node->Data();
+}
+
+void wxChoice::Clear()
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
+
+ gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) );
+ GtkWidget *menu = gtk_menu_new();
+ gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
+
+ if ( HasClientObjectData() )
+ {
+ // destroy the data (due to Robert's idea of using wxList<wxObject>
+ // and not wxList<wxClientData> we can't just say
+ // m_clientList.DeleteContents(TRUE) - this would crash!
+ wxNode *node = m_clientList.First();
+ while ( node )
+ {
+ delete (wxClientData *)node->Data();
+ node = node->Next();
+ }
+ }
+ m_clientList.Clear();
+
+ if ( m_strings )
+ m_strings->Clear();
+}
+
+void wxChoice::Delete( int n )
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
+
+ // VZ: apparently GTK+ doesn't have a built-in function to do it (not even
+ // in 2.0), hence this dump implementation - still better than nothing
+ int i,
+ count = GetCount();
+
+ wxCHECK_RET( n >= 0 && n < count, _T("invalid index in wxChoice::Delete") );
+
+ wxArrayString items;
+ items.Alloc(count);
+ for ( i = 0; i < count; i++ )
+ {
+ if ( i != n )
+ items.Add(GetString(i));
+ }
+
+ Clear();
+
+ for ( i = 0; i < count - 1; i++ )
+ {
+ Append(items[i]);
+ }
+}
int wxChoice::FindString( const wxString &string ) const
{
- // If you read this code once and you think you undestand
- // it, then you are very wrong. RR
-
- GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
- int count = 0;
- GList *child = menu_shell->children;
- while (child)
- {
- GtkBin *bin = GTK_BIN( child->data );
- GtkLabel *label = GTK_LABEL(bin->child);
- if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
- if (string == label->label) return count;
- child = child->next;
- count++;
- };
- return -1;
-};
-
-int wxChoice::GetColumns(void) const
-{
- return 1;
-};
-
-int wxChoice::GetSelection(void)
-{
- GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
- int count = 0;
- GList *child = menu_shell->children;
- while (child)
- {
- GtkBin *bin = GTK_BIN( child->data );
- if (!bin->child) return count;
- child = child->next;
- count++;
- };
- return -1;
-};
-
-wxString wxChoice::GetString( const int n ) const
-{
- GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
- int count = 0;
- GList *child = menu_shell->children;
- while (child)
- {
- GtkBin *bin = GTK_BIN( child->data );
- if (count == n)
+ wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
+
+ // If you read this code once and you think you understand
+ // it, then you are very wrong. Robert Roebling.
+
+ GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
+ int count = 0;
+ GList *child = menu_shell->children;
+ while (child)
+ {
+ GtkBin *bin = GTK_BIN( child->data );
+ GtkLabel *label = (GtkLabel *) NULL;
+ if (bin->child)
+ label = GTK_LABEL(bin->child);
+ if (!label)
+ label = GTK_LABEL( BUTTON_CHILD(m_widget) );
+
+ wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
+
+ if (string == wxString(label->label,*wxConvCurrent))
+ return count;
+
+ child = child->next;
+ count++;
+ }
+
+ return -1;
+}
+
+int wxChoice::GetSelection() const
+{
+ wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
+
+ GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
+ int count = 0;
+ GList *child = menu_shell->children;
+ while (child)
+ {
+ GtkBin *bin = GTK_BIN( child->data );
+ if (!bin->child) return count;
+ child = child->next;
+ count++;
+ }
+
+ return -1;
+}
+
+void wxChoice::SetString( int WXUNUSED(n), const wxString& WXUNUSED(string) )
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
+
+ wxFAIL_MSG(wxT("not implemented"));
+}
+
+wxString wxChoice::GetString( int n ) const
+{
+ wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid choice") );
+
+ GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
+ int count = 0;
+ GList *child = menu_shell->children;
+ while (child)
+ {
+ GtkBin *bin = GTK_BIN( child->data );
+ if (count == n)
+ {
+ GtkLabel *label = (GtkLabel *) NULL;
+ if (bin->child)
+ label = GTK_LABEL(bin->child);
+ if (!label)
+ label = GTK_LABEL( BUTTON_CHILD(m_widget) );
+
+ wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
+
+ return wxString(label->label,*wxConvCurrent);
+ }
+ child = child->next;
+ count++;
+ }
+
+ wxFAIL_MSG( wxT("wxChoice: invalid index in GetString()") );
+
+ return wxT("");
+}
+
+int wxChoice::GetCount() const
+{
+ wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid choice") );
+
+ GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
+ int count = 0;
+ GList *child = menu_shell->children;
+ while (child)
+ {
+ count++;
+ child = child->next;
+ }
+ return count;
+}
+
+void wxChoice::SetSelection( int n )
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
+
+ int tmp = n;
+ gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
+}
+
+void wxChoice::ApplyWidgetStyle()
+{
+ SetWidgetStyle();
+
+ GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
+
+ gtk_widget_set_style( m_widget, m_widgetStyle );
+ gtk_widget_set_style( GTK_WIDGET( menu_shell ), m_widgetStyle );
+
+ GList *child = menu_shell->children;
+ while (child)
+ {
+ gtk_widget_set_style( GTK_WIDGET( child->data ), m_widgetStyle );
+
+ GtkBin *bin = GTK_BIN( child->data );
+ GtkWidget *label = (GtkWidget *) NULL;
+ if (bin->child)
+ label = bin->child;
+ if (!label)
+ label = BUTTON_CHILD(m_widget);
+
+ gtk_widget_set_style( label, m_widgetStyle );
+
+ child = child->next;
+ }
+}
+
+size_t wxChoice::GtkAppendHelper(GtkWidget *menu, const wxString& item)
+{
+ GtkWidget *menu_item = gtk_menu_item_new_with_label( item.mbc_str() );
+
+ size_t index;
+ if ( m_strings )
+ {
+ // sorted control, need to insert at the correct index
+ index = m_strings->Add(item);
+
+ gtk_menu_insert( GTK_MENU(menu), menu_item, index );
+
+ if ( index )
+ {
+ m_clientList.Insert( m_clientList.Item(index - 1),
+ (wxObject*) NULL );
+ }
+ else
+ {
+ m_clientList.Insert( (wxObject*) NULL );
+ }
+ }
+ else
+ {
+ // normal control, just append
+ gtk_menu_append( GTK_MENU(menu), menu_item );
+
+ m_clientList.Append( (wxObject*) NULL );
+
+ // don't call wxChoice::GetCount() from here because it doesn't work
+ // if we're called from ctor (and GtkMenuShell is still NULL)
+ index = m_clientList.GetCount() - 1;
+ }
+
+ if (GTK_WIDGET_REALIZED(m_widget))
+ {
+ gtk_widget_realize( menu_item );
+ gtk_widget_realize( GTK_BIN(menu_item)->child );
+
+ if (m_widgetStyle) ApplyWidgetStyle();
+ }
+
+ gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
+ GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
+
+ gtk_widget_show( menu_item );
+
+ // return the index of the item in the control
+ return index;
+}
+
+wxSize wxChoice::DoGetBestSize() const
+{
+ wxSize ret( wxControl::DoGetBestSize() );
+
+ // we know better our horizontal extent: it depends on the longest string
+ // we have
+ ret.x = 0;
+ if ( m_widget )
{
- GtkLabel *label = GTK_LABEL(bin->child);
- if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
- return label->label;
- };
- child = child->next;
- count++;
- };
- return "";
-};
-
-wxString wxChoice::GetStringSelection(void) const
-{
- GtkLabel *label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
- return label->label;
-};
-
-int wxChoice::Number(void) const
-{
- GtkMenu *menu = GTK_MENU( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
- int count = 0;
- GList *child = menu->children;
- while (child)
- {
- count++;
- child = child->next;
- };
- return count;
-};
-
-void wxChoice::SetColumns( const int WXUNUSED(n) )
-{
-};
-
-void wxChoice::SetSelection( const int n )
-{
- int tmp = n;
- gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
-};
-
-void wxChoice::SetStringSelection( const wxString &string )
-{
- int n = FindString( string );
- if (n != -1) SetSelection( n );
-};
+ GdkFont *font = m_font.GetInternalFont();
+
+ wxCoord width;
+ size_t count = GetCount();
+ 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;
+ }
+
+ // add extra for the choice "=" button
+
+ // VZ: I don't know how to get the right value, it seems to be in
+ // GtkOptionMenuProps struct from gtkoptionmenu.c but we can't get
+ // to it - maybe we can use gtk_option_menu_size_request() for this
+ // somehow?
+ //
+ // This default value works only for the default GTK+ theme (i.e.
+ // no theme at all) (FIXME)
+ static const int widthChoiceIndicator = 35;
+ ret.x += widthChoiceIndicator;
+ }
+
+ // but not less than the minimal width
+ if ( ret.x < 80 )
+ ret.x = 80;
+
+ ret.y = 16 + gdk_char_height(GET_STYLE_FONT( m_widget->style ), 'H');
+
+ return ret;
+}
+
+#endif // wxUSE_CHOICE
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