+ // 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
+ // container for its children or just as a normal window which can be
+ // focused. But sometimes, e.g. for wxStaticBox, we can never have focus
+ // ourselves and can only get it if we have any focusable children.
+ bool m_acceptsFocusSelf;
+
+ // Cached value remembering whether we have any children accepting focus.
+ bool m_acceptsFocusChildren;
+
+ // a guard against infinite recursion
+ bool m_inSetFocus;
+};
+
+#ifdef wxHAS_NATIVE_TAB_TRAVERSAL
+
+// ----------------------------------------------------------------------------
+// wxControlContainer for native TAB navigation
+// ----------------------------------------------------------------------------
+
+// this must be a real class as we forward-declare it elsewhere
+class WXDLLIMPEXP_CORE wxControlContainer : public wxControlContainerBase
+{
+protected:
+ // set the focus to the child which had it the last time
+ virtual bool SetFocusToChild();
+};
+
+#else // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+// ----------------------------------------------------------------------------
+// wxControlContainer for TAB navigation implemented in wx itself
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxControlContainer : public wxControlContainerBase
+{
+public:
+ // default ctor, SetContainerWindow() must be called later
+ wxControlContainer();
+
+ // the methods to be called from the window event handlers
+ void HandleOnNavigationKey(wxNavigationKeyEvent& event);
+ void HandleOnFocus(wxFocusEvent& event);
+ void HandleOnWindowDestroy(wxWindowBase *child);
+
+ // called from OnChildFocus() handler, i.e. when one of our (grand)
+ // children gets the focus
+ void SetLastFocus(wxWindow *win);
+
+protected:
+
+ wxDECLARE_NO_COPY_CLASS(wxControlContainer);
+};
+
+#endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
+
+// this function is for wxWidgets internal use only
+extern WXDLLIMPEXP_CORE bool wxSetFocusToChild(wxWindow *win, wxWindow **child);
+
+// ----------------------------------------------------------------------------
+// wxNavigationEnabled: Derive from this class to support keyboard navigation
+// among window children in a wxWindow-derived class. The details of this class
+// don't matter, you just need to derive from it to make navigation work.
+// ----------------------------------------------------------------------------
+
+// The template parameter W must be a wxWindow-derived class.
+template <class W>
+class wxNavigationEnabled : public W
+{
+public:
+ typedef W BaseWindowClass;
+
+ wxNavigationEnabled()
+ {
+ m_container.SetContainerWindow(this);
+
+#ifndef wxHAS_NATIVE_TAB_TRAVERSAL
+ BaseWindowClass::Connect(wxEVT_NAVIGATION_KEY,
+ wxNavigationKeyEventHandler(wxNavigationEnabled::OnNavigationKey));
+
+ BaseWindowClass::Connect(wxEVT_SET_FOCUS,
+ wxFocusEventHandler(wxNavigationEnabled::OnFocus));
+
+ BaseWindowClass::Connect(wxEVT_CHILD_FOCUS,
+ wxChildFocusEventHandler(wxNavigationEnabled::OnChildFocus));
+#endif // !wxHAS_NATIVE_TAB_TRAVERSAL
+ }
+
+ WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocus() const
+ {
+ return m_container.AcceptsFocus();
+ }
+
+ WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocusRecursively() const
+ {
+ return m_container.AcceptsFocusRecursively();
+ }
+
+ WXDLLIMPEXP_INLINE_CORE virtual bool AcceptsFocusFromKeyboard() const
+ {
+ return m_container.AcceptsFocusFromKeyboard();
+ }
+
+ WXDLLIMPEXP_INLINE_CORE virtual void AddChild(wxWindowBase *child)
+ {
+ BaseWindowClass::AddChild(child);
+
+ 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)
+ {
+#ifndef wxHAS_NATIVE_TAB_TRAVERSAL
+ m_container.HandleOnWindowDestroy(child);
+#endif // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+ BaseWindowClass::RemoveChild(child);
+
+ // We could reset wxTAB_TRAVERSAL here but it doesn't seem to do any
+ // harm to keep it.
+ m_container.UpdateCanFocusChildren();
+ }
+
+ WXDLLIMPEXP_INLINE_CORE virtual void SetFocus()
+ {
+ if ( !m_container.DoSetFocus() )
+ BaseWindowClass::SetFocus();
+ }
+
+ void SetFocusIgnoringChildren()
+ {
+ BaseWindowClass::SetFocus();
+ }
+
+protected:
+#ifndef wxHAS_NATIVE_TAB_TRAVERSAL
+ void OnNavigationKey(wxNavigationKeyEvent& event)
+ {
+ m_container.HandleOnNavigationKey(event);
+ }
+
+ void OnFocus(wxFocusEvent& event)
+ {
+ m_container.HandleOnFocus(event);
+ }
+
+ void OnChildFocus(wxChildFocusEvent& event)
+ {
+ m_container.SetLastFocus(event.GetWindow());
+ event.Skip();
+ }
+#endif // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+ wxControlContainer m_container;
+
+
+ wxDECLARE_NO_COPY_TEMPLATE_CLASS(wxNavigationEnabled, W);
projects / wxWidgets.git / blobdiff