+// wxChoice
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControlWithItems)
+
+wxChoice::wxChoice()
+{
+ m_strings = (wxSortedArrayString *)NULL;
+}
+
+bool wxChoice::Create( wxWindow *parent, wxWindowID id,
+ const wxPoint &pos, const wxSize &size,
+ const wxArrayString& choices,
+ long style, const wxValidator& validator,
+ const wxString &name )
+{
+ wxCArrayString chs(choices);
+
+ return Create( parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
+ style, validator, name );
+}
+
+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 )
+{
+ 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 ( IsSorted() )
+ {
+ // if our m_strings != NULL, Append() will check for it and insert
+ // items in the correct order
+ m_strings = new wxSortedArrayString;
+ }
+
+ // If we have items, GTK will choose the first item by default
+ m_selection_hack = n > 0 ? 0 : wxNOT_FOUND;
+
+ GtkWidget *menu = gtk_menu_new();
+
+ for (unsigned int i = 0; i < (unsigned int)n; i++)
+ {
+ GtkAddHelper(menu, i, choices[i]);
+ }
+
+ gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
+
+ m_parent->DoAddChild( this );
+
+ PostCreation(size);
+ SetInitialSize(size); // need this too because this is a wxControlWithItems
+
+ // workaround for bug in gtk_option_menu_set_history(), it causes
+ // gtk_widget_size_allocate() to be called with the current
+ // widget->allocation values, which will be zero if a proper
+ // size_allocate has not occured yet
+ m_widget->allocation.width = m_width;
+ m_widget->allocation.height = m_height;
+
+ return true;
+}
+
+wxChoice::~wxChoice()
+{
+ Clear();
+
+ delete m_strings;
+}
+
+int wxChoice::DoInsertItems(const wxArrayStringsAdapter & items,
+ unsigned int pos,
+ void **clientData, wxClientDataType type)
+{
+ wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") );
+
+ const unsigned int count = items.GetCount();
+
+ GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
+
+ for ( unsigned int i = 0; i < count; ++i, ++pos )
+ {
+ int n = GtkAddHelper(menu, pos, items[i]);
+ if ( n == wxNOT_FOUND )
+ return n;
+
+ AssignNewItemClientData(n, clientData, i, type);
+ }
+
+ // if the item to insert is at or before the selection, and the selection is valid
+ if (((int)pos <= m_selection_hack) && (m_selection_hack != wxNOT_FOUND))
+ {
+ // move the selection forward
+ m_selection_hack += count;
+ }
+
+ // We must set the selection so that it can be read back even if
+ // the user has not modified it since GTK+ will then select the
+ // first item so well return 0.
+ if ((count > 0) && (m_selection_hack==wxNOT_FOUND))
+ m_selection_hack = 0;
+
+ return pos - 1;
+}
+
+void wxChoice::DoSetItemClientData(unsigned int n, void* clientData)
+{
+ m_clientData[n] = clientData;
+}
+
+void* wxChoice::DoGetItemClientData(unsigned int n) const
+{
+ return m_clientData[n];
+}
+
+void wxChoice::DoClear()
+{
+ 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 );
+
+ m_clientData.Clear();
+
+ if ( m_strings )
+ m_strings->Clear();
+
+ // begin with no selection
+ m_selection_hack = wxNOT_FOUND;
+}
+
+void wxChoice::DoDeleteOneItem(unsigned int n)
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
+ wxCHECK_RET( IsValid(n), _T("invalid index in wxChoice::Delete") );
+
+ // if the item to delete is before the selection, and the selection is valid
+ if (((int)n < m_selection_hack) && (m_selection_hack != wxNOT_FOUND))
+ {
+ // move the selection back one
+ m_selection_hack--;
+ }
+ else if ((int)n == m_selection_hack)
+ {
+ // invalidate the selection
+ m_selection_hack = wxNOT_FOUND;
+ }
+
+ // VZ: apparently GTK+ doesn't have a built-in function to do it (not even
+ // in 2.0), hence this dumb implementation -- still better than nothing
+ const unsigned int count = GetCount();
+
+ wxArrayString items;
+ wxArrayPtrVoid itemsData;
+ items.Alloc(count - 1);
+ itemsData.Alloc(count - 1);
+ for ( unsigned i = 0; i < count; i++ )
+ {
+ if ( i != n )
+ {
+ items.Add(GetString(i));
+ itemsData.Add(m_clientData[i]);
+ }
+ }
+
+ wxChoice::DoClear();
+
+ if ( count > 1 )
+ {
+ void ** const data = &itemsData[0];
+ if ( HasClientObjectData() )
+ Append(items, wx_reinterpret_cast(wxClientData **, data));
+ else
+ Append(items, data);
+ }
+ //else: the control is now empty, nothing to append
+}
+
+int wxChoice::FindString( const wxString &string, bool bCase ) const
+{
+ wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, 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(GTK_BIN(m_widget)->child);
+
+ wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
+
+ wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
+ if (string.IsSameAs( tmp, bCase ))
+ return count;
+
+ child = child->next;
+ count++;
+ }
+
+ return wxNOT_FOUND;
+}
+
+int wxChoice::GetSelection() const
+{
+ wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid choice") );
+
+ return m_selection_hack;
+
+}
+
+void wxChoice::SetString(unsigned int n, const wxString& str)
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid choice") );
+
+ GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
+ unsigned 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(GTK_BIN(m_widget)->child);
+
+ wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
+
+ gtk_label_set_text( label, wxGTK_CONV( str ) );
+
+ InvalidateBestSize();
+
+ return;
+ }
+ child = child->next;
+ count++;
+ }
+}
+
+wxString wxChoice::GetString(unsigned int n) const
+{
+ wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid choice") );
+
+ GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
+ unsigned 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(GTK_BIN(m_widget)->child);
+
+ wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
+
+ return wxString( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
+ }
+ child = child->next;
+ count++;
+ }
+
+ wxFAIL_MSG( wxT("wxChoice: invalid index in GetString()") );
+
+ return wxEmptyString;
+}
+
+unsigned 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) ) );
+ unsigned 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 );
+
+ // set the local selection variable manually
+ if ((n >= 0) && ((unsigned int)n < GetCount()))
+ {
+ // a valid selection has been made
+ m_selection_hack = n;
+ }
+ else if ((n == wxNOT_FOUND) || (GetCount() == 0))
+ {
+ // invalidates the selection if there are no items
+ // or if it is specifically set to wxNOT_FOUND
+ m_selection_hack = wxNOT_FOUND;
+ }
+ else
+ {
+ // this selects the first item by default if the selection is out of bounds
+ m_selection_hack = 0;
+ }
+}
+
+void wxChoice::DoApplyWidgetStyle(GtkRcStyle *style)
+{
+ GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
+
+ gtk_widget_modify_style( m_widget, style );
+ gtk_widget_modify_style( GTK_WIDGET( menu_shell ), style );
+
+ GList *child = menu_shell->children;
+ while (child)
+ {
+ gtk_widget_modify_style( GTK_WIDGET( child->data ), style );
+
+ GtkBin *bin = GTK_BIN( child->data );
+ GtkWidget *label = (GtkWidget *) NULL;
+ if (bin->child)
+ label = bin->child;
+ if (!label)
+ label = GTK_BIN(m_widget)->child;
+
+ gtk_widget_modify_style( label, style );
+
+ child = child->next;
+ }
+}
+
+int wxChoice::GtkAddHelper(GtkWidget *menu, unsigned int pos, const wxString& item)
+{
+ wxCHECK_MSG(pos<=m_clientData.GetCount(), -1, wxT("invalid index"));
+
+ GtkWidget *menu_item = gtk_menu_item_new_with_label( wxGTK_CONV( item ) );
+
+ if ( m_strings )
+ {
+ // sorted control, need to insert at the correct index
+ pos = m_strings->Add(item);
+ }
+
+ // don't call wxChoice::GetCount() from here because it doesn't work
+ // if we're called from ctor (and GtkMenuShell is still NULL)
+ if (pos == m_clientData.GetCount())
+ gtk_menu_shell_append( GTK_MENU_SHELL(menu), menu_item );
+ else
+ gtk_menu_shell_insert( GTK_MENU_SHELL(menu), menu_item, pos );
+
+ m_clientData.Insert( NULL, pos );
+
+ if (GTK_WIDGET_REALIZED(m_widget))
+ {
+ gtk_widget_realize( menu_item );
+ gtk_widget_realize( GTK_BIN(menu_item)->child );
+
+ ApplyWidgetStyle();
+ }
+
+ // The best size of a wxChoice should probably
+ // be changed everytime the control has been
+ // changed, but at least after adding an item
+ // it has to change. Adapted from Matt Ownby.
+ InvalidateBestSize();
+
+ g_signal_connect_after (menu_item, "activate",
+ G_CALLBACK (gtk_choice_clicked_callback),
+ this);
+
+ gtk_widget_show( menu_item );
+
+ // return the index of the item in the control
+ return pos;
+}
+
+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 )
+ {
+ 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;
+ }
+
+ // 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;
+
+ // If this request_size is called with no entries then
+ // the returned height is wrong. Give it a reasonable
+ // default value.
+ if (ret.y <= 18)
+ ret.y = 8 + GetCharHeight();
+
+ CacheBestSize(ret);
+ return ret;
+}
+
+GdkWindow *wxChoice::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
+{
+ return GTK_BUTTON(m_widget)->event_window;
+}
+
+// static
+wxVisualAttributes
+wxChoice::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
+{
+ return GetDefaultAttributesFromGTKWidget(gtk_option_menu_new);
+}
projects / wxWidgets.git / blobdiff