another file I added on the wxUniv branch and forgot to merge

[wxWidgets.git] / src / gtk / notebook.cpp

diff --git a/src/gtk/notebook.cpp b/src/gtk/notebook.cpp
index 78f0ebc9d6391d9cdace4301a1678c6e5fd3428c..f47bb99b30837be0fc23f206c5904d830a23d924 100644 (file)
--- a/src/gtk/notebook.cpp
+++ b/src/gtk/notebook.cpp
@@ -89,27 +89,44 @@ static void gtk_notebook_page_change_callback(GtkNotebook *WXUNUSED(widget),
                                               gint page,
                                               wxNotebook *notebook )
 {
+    static bool s_inPageChange = FALSE;
+
+    // are you trying to call SetSelection() from a notebook event handler?
+    // you shouldn't!
+    wxCHECK_RET( !s_inPageChange,
+                 _T("gtk_notebook_page_change_callback reentered") );
+
+    s_inPageChange = TRUE;
     if (g_isIdle)
         wxapp_install_idle_handler();
 
     int old = notebook->GetSelection();
 
-    wxNotebookEvent event1( wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING,
-                            notebook->GetId(), page, old );
-    event1.SetEventObject( notebook );
+    wxNotebookEvent eventChanging( wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING,
+                                   notebook->GetId(), page, old );
+    eventChanging.SetEventObject( notebook );
 
-    if ((notebook->GetEventHandler()->ProcessEvent( event1 )) &&
-        !event1.IsAllowed() )
+    if ( (notebook->GetEventHandler()->ProcessEvent(eventChanging)) &&
+         !eventChanging.IsAllowed() )
     {
         /* program doesn't allow the page change */
-        gtk_signal_emit_stop_by_name( GTK_OBJECT(notebook->m_widget), "switch_page" );
-        return;
+        gtk_signal_emit_stop_by_name( GTK_OBJECT(notebook->m_widget),
+                                      "switch_page" );
+    }
+    else // change allowed
+    {
+        // make wxNotebook::GetSelection() return the correct (i.e. consistent
+        // with wxNotebookEvent::GetSelection()) value even though the page is
+        // not really changed in GTK+
+        notebook->m_selection = page;
+
+        wxNotebookEvent eventChanged( wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED,
+                                      notebook->GetId(), page, old );
+        eventChanged.SetEventObject( notebook );
+        notebook->GetEventHandler()->ProcessEvent( eventChanged );
     }
 
-    wxNotebookEvent event2( wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED,
-                            notebook->GetId(), page, old );
-    event2.SetEventObject( notebook );
-    notebook->GetEventHandler()->ProcessEvent( event2 );
+    s_inPageChange = FALSE;
 }
 
 //-----------------------------------------------------------------------------
@@ -223,7 +240,7 @@ void wxNotebook::Init()
     m_imageList = (wxImageList *) NULL;
     m_ownsImageList = FALSE;
     m_pages.DeleteContents( TRUE );
-    m_lastSelection = -1;
+    m_selection = -1;
     m_themeEnabled = TRUE;
 }
 
@@ -305,25 +322,24 @@ int wxNotebook::GetSelection() const
 {
     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid notebook") );
 
-    GList *pages = GTK_NOTEBOOK(m_widget)->children;
-
-    if (g_list_length(pages) == 0) return -1;
-
-    GtkNotebook *notebook = GTK_NOTEBOOK(m_widget);
-
-    if (notebook->cur_page == NULL) return m_lastSelection;
+    if ( m_selection == -1 )
+    {
+        GList *pages = GTK_NOTEBOOK(m_widget)->children;
 
-    return g_list_index( pages, (gpointer)(notebook->cur_page) );
-}
+        if (g_list_length(pages) != 0)
+        {
+            GtkNotebook *notebook = GTK_NOTEBOOK(m_widget);
 
-int wxNotebook::GetPageCount() const
-{
-    return (int) g_list_length( GTK_NOTEBOOK(m_widget)->children );
-}
+            gpointer cur = notebook->cur_page;
+            if ( cur != NULL )
+            {
+                wxConstCast(this, wxNotebook)->m_selection =
+                    g_list_index( pages, cur );
+            }
+        }
+    }
 
-int wxNotebook::GetRowCount() const
-{
-    return 1;
+    return m_selection;
 }
 
 wxString wxNotebook::GetPageText( int page ) const
@@ -367,6 +383,8 @@ int wxNotebook::SetSelection( int page )
 
     int selOld = GetSelection();
 
+    // cache the selection
+    m_selection = page;
     gtk_notebook_set_page( GTK_NOTEBOOK(m_widget), page );
     
     wxGtkNotebookPage* g_page = GetNotebookPage( page );
@@ -376,25 +394,6 @@ int wxNotebook::SetSelection( int page )
     return selOld;
 }
 
-void wxNotebook::AdvanceSelection( bool forward )
-{
-    wxCHECK_RET( m_widget != NULL, wxT("invalid notebook") );
-
-    int max = GetPageCount();
-    if ( !max )
-    {
-        // nothing to do with empty notebook
-        return;
-    }
-
-    int sel = GetSelection();
-
-    if (forward)
-        SetSelection( sel == max - 1 ? 0 : sel + 1 );
-    else
-        SetSelection( sel == 0 ? max - 1 : sel - 1 );
-}
-
 void wxNotebook::SetImageList( wxImageList* imageList )
 {
     if (m_ownsImageList) delete m_imageList;
@@ -536,25 +535,31 @@ bool wxNotebook::DeleteAllPages()
 bool wxNotebook::DeletePage( int page )
 {
     wxGtkNotebookPage* nb_page = GetNotebookPage(page);
-    if (!nb_page) return FALSE;
+    wxCHECK_MSG( nb_page, FALSE, _T("invalid page in wxNotebook::DeletePage") );
 
-    /* GTK sets GtkNotebook.cur_page to NULL before sending
-       the switch page event */
-    m_lastSelection = GetSelection();
+    // GTK sets GtkNotebook.cur_page to NULL before sending the switch page
+    // event so we have to store the selection internally
+    if ( m_selection == -1 )
+    {
+        m_selection = GetSelection();
+        if ( m_selection == (int)m_pages.GetCount() - 1 )
+        {
+            // the index will become invalid after the page is deleted
+            m_selection = -1;
+        }
+    }
 
     nb_page->m_client->Destroy();
     m_pages.DeleteObject( nb_page );
 
-    m_lastSelection = -1;
-
     return TRUE;
 }
 
-bool wxNotebook::RemovePage( int page )
+wxNotebookPage *wxNotebook::DoRemovePage( int page )
 {
     wxGtkNotebookPage* nb_page = GetNotebookPage(page);
 
-    wxCHECK_MSG( nb_page, FALSE, _T("wxNotebook::RemovePage: invalid page") );
+    wxCHECK_MSG( nb_page, NULL, _T("wxNotebook::RemovePage: invalid page") );
 
     gtk_widget_ref( nb_page->m_client->m_widget );
     gtk_widget_unrealize( nb_page->m_client->m_widget );
@@ -562,9 +567,10 @@ bool wxNotebook::RemovePage( int page )
         
     gtk_notebook_remove_page( GTK_NOTEBOOK(m_widget), page );
 
+    wxNotebookPage *pageRemoved = (wxNotebookPage *)m_pages[page];
     m_pages.DeleteObject( nb_page );
 
-    return TRUE;
+    return pageRemoved;
 }
 
 bool wxNotebook::InsertPage( int position, wxNotebookPage* win, const wxString& text,
@@ -666,17 +672,6 @@ void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
         event.Skip();
 }
 
-wxNotebookPage *wxNotebook::GetPage( int page ) const
-{
-    wxCHECK_MSG( m_widget != NULL, (wxWindow*) NULL, wxT("invalid notebook") );
-
-    wxGtkNotebookPage* nb_page = GetNotebookPage(page);
-    if (!nb_page)
-        return (wxNotebookPage *) NULL;
-    else
-        return nb_page->m_client;
-}
-
 #if wxUSE_CONSTRAINTS
 
 // override these 2 functions to do nothing: everything is done in OnSize