check for error in GetSelection(long *, long *); clean up SetSelect(long, long)

[wxWidgets.git] / src / gtk1 / choice.cpp

diff --git a/src/gtk1/choice.cpp b/src/gtk1/choice.cpp
index 05b88cc2ae702c37f9b29a45687a49d1f321f6f2..a2fa3409c87da8d7613bbe65b1a358f4a0092ec3 100644 (file)
--- a/src/gtk1/choice.cpp
+++ b/src/gtk1/choice.cpp
@@ -8,7 +8,7 @@
 /////////////////////////////////////////////////////////////////////////////
 
 
 /////////////////////////////////////////////////////////////////////////////
 
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

 #pragma implementation "choice.h"
 #endif
 
 #pragma implementation "choice.h"
 #endif
 


@@ -17,6 +17,7 @@
 #if wxUSE_CHOICE
 
 #include "wx/choice.h"
 #if wxUSE_CHOICE
 
 #include "wx/choice.h"

+#include "wx/arrstr.h"

 
 #include "wx/gtk/private.h"
 
 
 #include "wx/gtk/private.h"
 


@@ -46,6 +47,29 @@ static void gtk_choice_clicked_callback( GtkWidget *WXUNUSED(widget), wxChoice *
 
     if (g_blockEventsOnDrag) return;
 
 
     if (g_blockEventsOnDrag) return;
 

+    int selection = wxNOT_FOUND;
+
+#ifdef __WXGTK20__
+    selection = gtk_option_menu_get_history( GTK_OPTION_MENU(choice->GetHandle()) );
+#else
+    GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(choice->GetHandle()) ) );
+    int count = 0;
+
+    GList *child = menu_shell->children;
+    while (child)
+    {
+        GtkBin *bin = GTK_BIN( child->data );
+        if (!bin->child)
+        {
+            selection = count;
+            break;
+        }
+        child = child->next;
+        count++;
+    }
+#endif
+    choice->m_selection_hack = selection;
+

     wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() );
     int n = choice->GetSelection();
 
     wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() );
     int n = choice->GetSelection();
 


@@ -72,6 +96,18 @@ wxChoice::wxChoice()
     m_strings = (wxSortedArrayString *)NULL;
 }
 
     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[],
 bool wxChoice::Create( wxWindow *parent, wxWindowID id,
                        const wxPoint &pos, const wxSize &size,
                        int n, const wxString choices[],


@@ -98,6 +134,9 @@ bool wxChoice::Create( wxWindow *parent, wxWindowID id,
         m_strings = new wxSortedArrayString;
     }
 
         m_strings = new wxSortedArrayString;
     }
 

+    // begin with no selection
+    m_selection_hack = wxNOT_FOUND;
+

     GtkWidget *menu = gtk_menu_new();
 
     for (int i = 0; i < n; i++)
     GtkWidget *menu = gtk_menu_new();
 
     for (int i = 0; i < n; i++)


@@ -109,16 +148,8 @@ bool wxChoice::Create( wxWindow *parent, wxWindowID id,
 
     m_parent->DoAddChild( this );
 
 
     m_parent->DoAddChild( this );
 

-    PostCreation();
-
-    SetFont( parent->GetFont() );
-
-    SetBestSize(size);
-
-    SetBackgroundColour( parent->GetBackgroundColour() );
-    SetForegroundColour( parent->GetForegroundColour() );
-
-    Show( TRUE );
+    PostCreation(size);
+    SetBestSize(size); // need this too because this is a wxControlWithItems

 
     return TRUE;
 }
 
     return TRUE;
 }


@@ -149,6 +180,13 @@ int wxChoice::DoInsert( const wxString &item, int pos )
 
     GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
 
 
     GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
 

+    // if the item to insert is at or before the selection, and the selection is valid
+    if ((pos <= m_selection_hack) && (m_selection_hack != wxNOT_FOUND))
+    {
+        // move the selection forward one
+        m_selection_hack++;
+    }
+

     return GtkAddHelper(menu, pos, item);
 }
 
     return GtkAddHelper(menu, pos, item);
 }
 


@@ -219,6 +257,9 @@ void wxChoice::Clear()
 
     if ( m_strings )
         m_strings->Clear();
 
     if ( m_strings )
         m_strings->Clear();

+
+    // begin with no selection
+    m_selection_hack = wxNOT_FOUND;

 }
 
 void wxChoice::Delete( int n )
 }
 
 void wxChoice::Delete( int n )


@@ -226,18 +267,61 @@ 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
     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
+    //     in 2.0), hence this dumb implementation -- still better than nothing

     int i,
         count = GetCount();
 
     wxCHECK_RET( n >= 0 && n < count, _T("invalid index in wxChoice::Delete") );
 
     int i,
         count = GetCount();
 
     wxCHECK_RET( n >= 0 && n < count, _T("invalid index in wxChoice::Delete") );
 

+    // if the item to delete is before the selection, and the selection is valid
+    if ((n < m_selection_hack) && (m_selection_hack != wxNOT_FOUND))
+    {
+        // move the selection back one
+        m_selection_hack--;
+    }
+    else if (n == m_selection_hack)
+    {
+        // invalidate the selection
+        m_selection_hack = wxNOT_FOUND;
+    }
+
+    const bool hasClientData = m_clientDataItemsType != wxClientData_None;
+    const bool hasObjectData = m_clientDataItemsType == wxClientData_Object;
+
+    wxList::compatibility_iterator node = m_clientList.GetFirst();
+

     wxArrayString items;
     wxArrayString items;

+    wxArrayPtrVoid itemsData;

     items.Alloc(count);
     for ( i = 0; i < count; i++ )
     {
         if ( i != n )
     items.Alloc(count);
     for ( i = 0; i < count; i++ )
     {
         if ( i != n )

+        {

             items.Add(GetString(i));
             items.Add(GetString(i));

+            if ( hasClientData )
+            {
+                // also save the client data
+                itemsData.Add(node->GetData());
+            }
+        }
+        else // need to delete the client object too
+        {
+            if ( hasObjectData )
+            {
+                delete (wxClientData *)node->GetData();
+            }
+        }
+
+        if ( hasClientData )
+        {
+            node = node->GetNext();
+        }
+    }
+
+    if ( hasObjectData )
+    {
+        // prevent Clear() from destroying all client data
+        m_clientDataItemsType = wxClientData_None;

     }
 
     Clear();
     }
 
     Clear();


@@ -245,6 +329,11 @@ void wxChoice::Delete( int n )
     for ( i = 0; i < count - 1; i++ )
     {
         Append(items[i]);
     for ( i = 0; i < count - 1; i++ )
     {
         Append(items[i]);

+
+        if ( hasObjectData )
+            SetClientObject(i, (wxClientData *)itemsData[i]);
+        else if ( hasClientData )
+            SetClientData(i, itemsData[i]);

     }
 }
 
     }
 }
 


@@ -268,7 +357,7 @@ int wxChoice::FindString( const wxString &string ) const
             label = GTK_LABEL( BUTTON_CHILD(m_widget) );
 
         wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );
             label = GTK_LABEL( BUTTON_CHILD(m_widget) );
 
         wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") );

-        
+

 #ifdef __WXGTK20__
          wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
 #else
 #ifdef __WXGTK20__
          wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text( label) ) );
 #else


@@ -287,33 +376,38 @@ int wxChoice::FindString( const wxString &string ) const
 int wxChoice::GetSelection() const
 {
     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );
 int wxChoice::GetSelection() const
 {
     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") );

-    
-#ifdef __WXGTK20__

 
 

-    return gtk_option_menu_get_history( GTK_OPTION_MENU(m_widget) );
-    
-#else
+    return m_selection_hack;
+
+}
+
+void wxChoice::SetString( 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) ) );
     int count = 0;
     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 );
     GList *child = menu_shell->children;
     while (child)
     {
         GtkBin *bin = GTK_BIN( child->data );

-        if (!bin->child) return count;
+        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") );
+
+            gtk_label_set_text( label, wxGTK_CONV( str ) ); 
+            
+            return;
+        }

         child = child->next;
         count++;
     }
         child = child->next;
         count++;
     }

-
-    return -1;
-#endif
-}
-
-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
 }
 
 wxString wxChoice::GetString( int n ) const


@@ -372,21 +466,37 @@ void wxChoice::SetSelection( int n )
 
     int tmp = n;
     gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
 
     int tmp = n;
     gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );

+
+    // set the local selection variable manually
+    if ((n >= 0) && (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::ApplyWidgetStyle()
+void wxChoice::DoApplyWidgetStyle(GtkRcStyle *style)

 {
 {

-    SetWidgetStyle();
-

     GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 
     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 );
+    gtk_widget_modify_style( m_widget, style );
+    gtk_widget_modify_style( GTK_WIDGET( menu_shell ), style );

 
     GList *child = menu_shell->children;
     while (child)
     {
 
     GList *child = menu_shell->children;
     while (child)
     {

-        gtk_widget_set_style( GTK_WIDGET( child->data ), m_widgetStyle );
+        gtk_widget_modify_style( GTK_WIDGET( child->data ), style );

 
         GtkBin *bin = GTK_BIN( child->data );
         GtkWidget *label = (GtkWidget *) NULL;
 
         GtkBin *bin = GTK_BIN( child->data );
         GtkWidget *label = (GtkWidget *) NULL;


@@ -395,7 +505,7 @@ void wxChoice::ApplyWidgetStyle()
         if (!label)
             label = BUTTON_CHILD(m_widget);
 
         if (!label)
             label = BUTTON_CHILD(m_widget);
 

-        gtk_widget_set_style( label, m_widgetStyle );
+        gtk_widget_modify_style( label, style );

 
         child = child->next;
     }
 
         child = child->next;
     }


@@ -450,9 +560,15 @@ int wxChoice::GtkAddHelper(GtkWidget *menu, int pos, const wxString& item)
         gtk_widget_realize( menu_item );
         gtk_widget_realize( GTK_BIN(menu_item)->child );
 
         gtk_widget_realize( menu_item );
         gtk_widget_realize( GTK_BIN(menu_item)->child );
 

-        if (m_widgetStyle) ApplyWidgetStyle();
+        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();
+    

     gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
       GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
 
     gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
       GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
 


@@ -475,7 +591,7 @@ wxSize wxChoice::DoGetBestSize() const
         size_t count = GetCount();
         for ( size_t n = 0; n < count; n++ )
         {
         size_t count = GetCount();
         for ( size_t n = 0; n < count; n++ )
         {

-            GetTextExtent( GetString(n), &width, NULL, NULL, NULL, &m_font );
+            GetTextExtent( GetString(n), &width, NULL, NULL, NULL );

             if ( width > ret.x )
                 ret.x = width;
         }
             if ( width > ret.x )
                 ret.x = width;
         }


@@ -497,8 +613,13 @@ wxSize wxChoice::DoGetBestSize() const
     if ( ret.x < 80 )
         ret.x = 80;
 
     if ( ret.x < 80 )
         ret.x = 80;
 

-    ret.y = 16 + GetCharHeight();
+    // 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;
 }
 
     return ret;
 }
 


@@ -511,6 +632,13 @@ bool wxChoice::IsOwnGtkWindow( GdkWindow *window )
 #endif
 }
 
 #endif
 }
 

+// static
+wxVisualAttributes
+wxChoice::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
+{
+    return GetDefaultAttributesFromGTKWidget(gtk_option_menu_new);
+}
+

 
 #endif // wxUSE_CHOICE
 
 
 #endif // wxUSE_CHOICE