///////////////////////////////////////////////////////////////////////////////
// Name: wx/containr.h
-// Purpose: wxControlContainer class declration: a "mix-in" class which
-// implements the TAB navigation between the controls
+// Purpose: wxControlContainer and wxNavigationEnabled declarations
// Author: Vadim Zeitlin
// Modified by:
// Created: 06.08.01
// RCS-ID: $Id$
-// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
+// Copyright: (c) 2001, 2011 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_CONTAINR_H_
#define _WX_CONTAINR_H_
-class WXDLLEXPORT wxFocusEvent;
-class WXDLLEXPORT wxNavigationKeyEvent;
-class WXDLLEXPORT wxWindow;
-class WXDLLEXPORT wxWindowBase;
+#include "wx/defs.h"
+
+class WXDLLIMPEXP_FWD_CORE wxWindow;
+class WXDLLIMPEXP_FWD_CORE wxWindowBase;
/*
- Implementation note: wxControlContainer is not a real mix-in but rather
- a class meant to be agregated with (and not inherited from). Although
- logically it should be a mix-in, doing it like this has no advantage from
- the point of view of the existing code but does have some problems (we'd
- need to play tricks with event handlers which may be difficult to do
- safely). The price we pay for this simplicity is the ugly macros below.
+ This header declares wxControlContainer class however it's not a real
+ container of controls but rather just a helper used to implement TAB
+ navigation among the window children. You should rarely need to use it
+ directly, derive from the documented public wxNavigationEnabled<> class to
+ implement TAB navigation in a custom composite window.
*/
// ----------------------------------------------------------------------------
-// wxControlContainer
+// wxControlContainerBase: common part used in both native and generic cases
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxControlContainer
+class WXDLLIMPEXP_CORE wxControlContainerBase
{
public:
- // ctors and such
- wxControlContainer(wxWindow *winParent = NULL);
- void SetContainerWindow(wxWindow *winParent) { m_winParent = winParent; }
+ // default ctor, SetContainerWindow() must be called later
+ wxControlContainerBase()
+ {
+ m_winParent = NULL;
- // the methods to be called from the window event handlers
- void HandleOnNavigationKey(wxNavigationKeyEvent& event);
- void HandleOnFocus(wxFocusEvent& event);
- void HandleOnWindowDestroy(wxWindowBase *child);
+ // do accept focus initially, we'll stop doing it if/when any children
+ // are added
+ m_acceptsFocus = true;
+ m_inSetFocus = false;
+ m_winLastFocused = NULL;
+ }
+ virtual ~wxControlContainerBase() {}
+
+ void SetContainerWindow(wxWindow *winParent)
+ {
+ wxASSERT_MSG( !m_winParent, wxT("shouldn't be called twice") );
+
+ m_winParent = winParent;
+ }
// should be called from SetFocus(), returns false if we did nothing with
// the focus and the default processing should take place
bool DoSetFocus();
- // can our child get the focus?
- bool AcceptsFocus() const;
+ // should be called when we decide that we should [stop] accepting focus
+ void SetCanFocus(bool acceptsFocus);
- // called from OnChildFocus() handler, i.e. when one of our (grand)
- // children gets the focus
- void SetLastFocus(wxWindow *win);
+ // returns whether we should accept focus ourselves or not
+ bool AcceptsFocus() const { return m_acceptsFocus; }
+
+ // returns whether we or one of our children accepts focus: we always do
+ // because if we don't have any focusable children it probably means that
+ // we're not being used as a container at all (think of wxGrid or generic
+ // wxListCtrl) and so should get focus for ourselves
+ bool AcceptsFocusRecursively() const { return true; }
+
+ // this is used to determine whether we can accept focus when Tab or
+ // another navigation key is pressed -- we alsways can, for the same reason
+ // as mentioned above for AcceptsFocusRecursively()
+ bool AcceptsFocusFromKeyboard() const { return true; }
+
+ // Call this when the number of children of the window changes.
+ // If we have any children, this panel (used just as container for
+ // them) shouldn't get focus for itself.
+ void UpdateCanFocus() { SetCanFocus(!HasAnyFocusableChildren()); }
protected:
// set the focus to the child which had it the last time
- bool SetFocusToChild();
+ virtual bool SetFocusToChild();
+
+ // return true if we have any children accepting focus
+ bool HasAnyFocusableChildren() const;
// the parent window we manage the children for
wxWindow *m_winParent;
// the child which had the focus last time this panel was activated
wxWindow *m_winLastFocused;
+private:
+ // value returned by AcceptsFocus(), should be changed using SetCanFocus()
+ // only
+ bool m_acceptsFocus;
+
// 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
+
+class WXDLLIMPEXP_FWD_CORE wxFocusEvent;
+class WXDLLIMPEXP_FWD_CORE wxNavigationKeyEvent;
+
+// ----------------------------------------------------------------------------
+// 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:
- DECLARE_NO_COPY_CLASS(wxControlContainer)
+ wxDECLARE_NO_COPY_CLASS(wxControlContainer);
};
+#endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
+
// this function is for wxWidgets internal use only
extern bool wxSetFocusToChild(wxWindow *win, wxWindow **child);
// ----------------------------------------------------------------------------
-// macros which may be used by the classes wishing to implement TAB navigation
-// among their children
+// 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.
// ----------------------------------------------------------------------------
-// declare the methods to be forwarded
-#define WX_DECLARE_CONTROL_CONTAINER() \
-public: \
- void OnNavigationKey(wxNavigationKeyEvent& event); \
- void OnFocus(wxFocusEvent& event); \
- virtual void OnChildFocus(wxChildFocusEvent& event); \
- virtual void SetFocus(); \
- virtual void SetFocusIgnoringChildren(); \
- virtual void RemoveChild(wxWindowBase *child); \
- virtual bool AcceptsFocus() const; \
-\
-protected: \
+// 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
+ Connect(wxEVT_NAVIGATION_KEY,
+ wxNavigationKeyEventHandler(wxNavigationEnabled::OnNavigationKey));
+
+ Connect(wxEVT_SET_FOCUS,
+ wxFocusEventHandler(wxNavigationEnabled::OnFocus));
+
+ Connect(wxEVT_CHILD_FOCUS,
+ wxChildFocusEventHandler(wxNavigationEnabled::OnChildFocus));
+#endif // !wxHAS_NATIVE_TAB_TRAVERSAL
+ }
+
+ virtual bool AcceptsFocus() const
+ {
+ return m_container.AcceptsFocus();
+ }
+
+ virtual bool AcceptsFocusRecursively() const
+ {
+ return m_container.AcceptsFocusRecursively();
+ }
+
+ virtual bool AcceptsFocusFromKeyboard() const
+ {
+ return m_container.AcceptsFocusFromKeyboard();
+ }
+
+ virtual void AddChild(wxWindowBase *child)
+ {
+ BaseWindowClass::AddChild(child);
+
+ m_container.UpdateCanFocus();
+ }
+
+ virtual void RemoveChild(wxWindowBase *child)
+ {
+#ifndef wxHAS_NATIVE_TAB_TRAVERSAL
+ m_container.HandleOnWindowDestroy(child);
+#endif // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+ BaseWindowClass::RemoveChild(child);
+
+ m_container.UpdateCanFocus();
+ }
+
+ virtual void SetFocus()
+ {
+ if ( !m_container.DoSetFocus() )
+ BaseWindowClass::SetFocus();
+ }
+
+ void SetFocusIgnoringChildren()
+ {
+ BaseWindowClass::SetFocus();
+ }
+
+ void AcceptFocus(bool acceptFocus)
+ {
+ m_container.SetCanFocus(acceptFocus);
+ }
+
+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);
+};
+
+// ----------------------------------------------------------------------------
+// Compatibility macros from now on, do NOT use them and preferably do not even
+// look at them.
+// ----------------------------------------------------------------------------
+
+#ifdef WXWIN_COMPATIBILITY_2_8
+
+// common part of WX_DECLARE_CONTROL_CONTAINER in the native and generic cases,
+// it should be used in the wxWindow-derived class declaration
+#define WX_DECLARE_CONTROL_CONTAINER_BASE() \
+public: \
+ virtual bool AcceptsFocus() const; \
+ virtual bool AcceptsFocusRecursively() const; \
+ virtual bool AcceptsFocusFromKeyboard() const; \
+ virtual void AddChild(wxWindowBase *child); \
+ virtual void RemoveChild(wxWindowBase *child); \
+ virtual void SetFocus(); \
+ void SetFocusIgnoringChildren(); \
+ void AcceptFocus(bool acceptFocus) \
+ { \
+ m_container.SetCanFocus(acceptFocus); \
+ } \
+ \
+protected: \
wxControlContainer m_container
+// this macro must be used in the derived class ctor
+#define WX_INIT_CONTROL_CONTAINER() \
+ m_container.SetContainerWindow(this)
+
+// common part of WX_DELEGATE_TO_CONTROL_CONTAINER in the native and generic
+// cases, must be used in the wxWindow-derived class implementation
+#define WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename) \
+ void classname::AddChild(wxWindowBase *child) \
+ { \
+ basename::AddChild(child); \
+ \
+ m_container.UpdateCanFocus(); \
+ } \
+ \
+ bool classname::AcceptsFocusRecursively() const \
+ { \
+ return m_container.AcceptsFocusRecursively(); \
+ } \
+ \
+ void classname::SetFocus() \
+ { \
+ if ( !m_container.DoSetFocus() ) \
+ basename::SetFocus(); \
+ } \
+ \
+ bool classname::AcceptsFocus() const \
+ { \
+ return m_container.AcceptsFocus(); \
+ } \
+ \
+ bool classname::AcceptsFocusFromKeyboard() const \
+ { \
+ return m_container.AcceptsFocusFromKeyboard(); \
+ }
+
+
+#ifdef wxHAS_NATIVE_TAB_TRAVERSAL
+
+#define WX_EVENT_TABLE_CONTROL_CONTAINER(classname)
+
+#define WX_DECLARE_CONTROL_CONTAINER WX_DECLARE_CONTROL_CONTAINER_BASE
+
+#define WX_DELEGATE_TO_CONTROL_CONTAINER(classname, basename) \
+ WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename) \
+ \
+ void classname::RemoveChild(wxWindowBase *child) \
+ { \
+ basename::RemoveChild(child); \
+ \
+ m_container.UpdateCanFocus(); \
+ } \
+ \
+ void classname::SetFocusIgnoringChildren() \
+ { \
+ basename::SetFocus(); \
+ }
+
+#else // !wxHAS_NATIVE_TAB_TRAVERSAL
+
+// declare the methods to be forwarded
+#define WX_DECLARE_CONTROL_CONTAINER() \
+ WX_DECLARE_CONTROL_CONTAINER_BASE(); \
+ \
+public: \
+ void OnNavigationKey(wxNavigationKeyEvent& event); \
+ void OnFocus(wxFocusEvent& event); \
+ virtual void OnChildFocus(wxChildFocusEvent& event)
+
// implement the event table entries for wxControlContainer
#define WX_EVENT_TABLE_CONTROL_CONTAINER(classname) \
EVT_SET_FOCUS(classname::OnFocus) \
EVT_NAVIGATION_KEY(classname::OnNavigationKey)
// implement the methods forwarding to the wxControlContainer
-#define WX_DELEGATE_TO_CONTROL_CONTAINER(classname, basename) \
-void classname::OnNavigationKey( wxNavigationKeyEvent& event ) \
-{ \
- m_container.HandleOnNavigationKey(event); \
-} \
- \
-void classname::RemoveChild(wxWindowBase *child) \
-{ \
- m_container.HandleOnWindowDestroy(child); \
- \
- basename::RemoveChild(child); \
-} \
- \
-void classname::SetFocus() \
-{ \
- if ( !m_container.DoSetFocus() ) \
- basename::SetFocus(); \
-} \
- \
-void classname::SetFocusIgnoringChildren() \
-{ \
- basename::SetFocus(); \
-} \
- \
-void classname::OnChildFocus(wxChildFocusEvent& event) \
-{ \
- m_container.SetLastFocus(event.GetWindow()); \
-} \
- \
-void classname::OnFocus(wxFocusEvent& event) \
-{ \
- m_container.HandleOnFocus(event); \
-} \
-bool classname::AcceptsFocus() const \
-{ \
- return m_container.AcceptsFocus(); \
-}
+#define WX_DELEGATE_TO_CONTROL_CONTAINER(classname, basename) \
+ WX_DELEGATE_TO_CONTROL_CONTAINER_BASE(classname, basename) \
+ \
+ void classname::RemoveChild(wxWindowBase *child) \
+ { \
+ m_container.HandleOnWindowDestroy(child); \
+ \
+ basename::RemoveChild(child); \
+ \
+ m_container.UpdateCanFocus(); \
+ } \
+ \
+ void classname::OnNavigationKey( wxNavigationKeyEvent& event ) \
+ { \
+ m_container.HandleOnNavigationKey(event); \
+ } \
+ \
+ void classname::SetFocusIgnoringChildren() \
+ { \
+ basename::SetFocus(); \
+ } \
+ \
+ void classname::OnChildFocus(wxChildFocusEvent& event) \
+ { \
+ m_container.SetLastFocus(event.GetWindow()); \
+ event.Skip(); \
+ } \
+ \
+ void classname::OnFocus(wxFocusEvent& event) \
+ { \
+ m_container.HandleOnFocus(event); \
+ }
+
+#endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
+#endif // WXWIN_COMPATIBILITY_2_8
#endif // _WX_CONTAINR_H_
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