Document wxKill(wxSIGTERM) reliance on having an open window in wxMSW.

[wxWidgets.git] / include / wx / containr.h

diff --git a/include/wx/containr.h b/include/wx/containr.h
index 69dc4a92c62c1bcd2c0a424bc317566ef2710950..b465e33c30b5c8aec34f8e19a539211a4f79741d 100644 (file)
--- a/include/wx/containr.h
+++ b/include/wx/containr.h
@@ -62,18 +62,27 @@ public:
 
     // This can be called by the window to indicate that it never wants to have
     // the focus for itself.
-    void DisableSelfFocus() { m_acceptsFocusSelf = false; }
+    void DisableSelfFocus()
+        { m_acceptsFocusSelf = false; UpdateParentCanFocus(); }
+
+    // This can be called to undo the effect of a previous DisableSelfFocus()
+    // (otherwise calling it is not necessary as the window does accept focus
+    // by default).
+    void EnableSelfFocus()
+        { m_acceptsFocusSelf = true; UpdateParentCanFocus(); }
 
     // should be called from SetFocus(), returns false if we did nothing with
     // the focus and the default processing should take place
     bool DoSetFocus();
 
     // returns whether we should accept focus ourselves or not
-    bool AcceptsFocus() const { return m_acceptsFocusSelf; }
+    bool AcceptsFocus() const
+        { return m_acceptsFocusSelf && m_winParent->CanBeFocused(); }
 
     // Returns whether we or one of our children accepts focus.
     bool AcceptsFocusRecursively() const
-    bool AcceptsFocus() const { return m_acceptsFocus; }
+        { return AcceptsFocus() ||
+            (m_acceptsFocusChildren && HasAnyChildrenAcceptingFocus()); }
 
     // We accept focus from keyboard if we accept it at all.
     bool AcceptsFocusFromKeyboard() const { return AcceptsFocusRecursively(); }
@@ -90,6 +99,10 @@ protected:
     // return true if we have any children accepting focus
     bool HasAnyFocusableChildren() const;
 
+    // return true if we have any children that do accept focus right now
+    bool HasAnyChildrenAcceptingFocus() const;
+
+
     // the parent window we manage the children for
     wxWindow *m_winParent;
 
@@ -97,6 +110,9 @@ protected:
     wxWindow *m_winLastFocused;
 
 private:
+    // Update the window status to reflect whether it is getting focus or not.
+    void UpdateParentCanFocus();
+
     // Indicates whether the associated window can ever have focus itself.
     //
     // Usually this is the case, e.g. a wxPanel can be used either as a
@@ -205,7 +221,13 @@ public:
     {
         BaseWindowClass::AddChild(child);
 
-        m_container.UpdateCanFocusChildren();
+        if ( m_container.UpdateCanFocusChildren() )
+        {
+            // Under MSW we must have wxTAB_TRAVERSAL style for TAB navigation
+            // to work.
+            if ( !BaseWindowClass::HasFlag(wxTAB_TRAVERSAL) )
+                BaseWindowClass::ToggleWindowStyle(wxTAB_TRAVERSAL);
+        }
     }
 
     WXDLLIMPEXP_INLINE_CORE virtual void RemoveChild(wxWindowBase *child)
@@ -216,6 +238,8 @@ public:
 
         BaseWindowClass::RemoveChild(child);
 
+        // We could reset wxTAB_TRAVERSAL here but it doesn't seem to do any
+        // harm to keep it.
         m_container.UpdateCanFocusChildren();
     }